一、SCI 25条
第 1 条，共 25 条
标题: A Stress Measurement Method for Steel Strands Based on LC Oscillation
作者: Chen, DJ (Chen, Dongjun); Zhang, BN (Zhang, Benniu); Li, XX (Li, Xingxing); Tu, C (Tu, Chong); Yuan, C (Yuan, Can); Li, WZ (Li, Wenzhao); Zhou, ZX (Zhou, Zhixiang); Liang, ZB (Liang, Zongbao)
来源出版物: ADVANCES IN MATERIALS SCIENCE AND ENGINEERING 文献号: 1584903 DOI: 10.1155/2018/1584903 出版年: 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 19
摘要: The prestress loss is one of the main factors affecting the safety of prestressed concrete structure. While the detecting signals like sound and light are diffcult to spread in steel strands, there is no effective method for prestress detection of the bonded prestressed steel strands in existing structures yet. In this paper, taking into consideration that the electromagnetic oscillation characteristic can make the signal propagate effectively on the bonded prestressed steel strands, a nondestructive prestress detection method based on the electromagnetic effect to detect oscillation frequency is proposed. In a detection circuit, the steel strands are simulated as an inductance component, in which an induced electromagnetic signal passes through the steel strands to form resonance. And then, a frequency meter is used to detect the oscillation frequency of the resonant circuit. The oscillation frequency is supposed to have relationship with the prestress loading on the steel strands. A section of steel strands with a length of 1.2 m is adopted to test the correlation of stress and oscillation frequency. Both the theoretical and experimental results show that the resonant frequency of the circuit decreases with the increase of the stress of the strand and is linear in a certain range.
入藏号: WOS:000423567900001
语种: English
文献类型: Article
KeyWords Plus: PRESTRESSING STRANDS; CONCRETE STRUCTURES; BEAMS; MODEL
地址: [Chen, Dongjun; Zhang, Benniu; Li, Xingxing; Tu, Chong; Yuan, Can; Li, Wenzhao; Zhou, Zhixiang; Liang, Zongbao] Chongqing Jiaotong Univ, Chongqing 400074, Peoples R China.
[Chen, Dongjun] CSCEC Xinjiang Construct & Engn Grp Co Ltd, Urumqi 830000, Peoples R China.
通讯作者地址: Zhang, BN (通讯作者),Chongqing Jiaotong Univ, Chongqing 400074, Peoples R China.
电子邮件地址: benniuzhang@gmail.com
出版商: HINDAWI LTD
出版商地址: ADAM HOUSE, 3RD FLR, 1 FITZROY SQ, LONDON, W1T 5HF, ENGLAND
Web of Science 类别: Materials Science, Multidisciplinary
研究方向: Materials Science
IDS 号: FU0VG
ISSN: 1687-8434
eISSN: 1687-8442
29 字符的来源出版物名称缩写: ADV MATER SCI ENG
ISO 来源出版物缩写: Adv. Mater. Sci. Eng.
来源出版物页码计数: 8
基金资助致谢:
基金资助机构 授权号
National Key Research and Development Program of China
2017YFC0806007
Ministry of Transport of China
2015319814020
Technology Innovation Project of Chongqing Social and People's Livelihood
CSTC2016SHMSZX30026
Program for Innovation Team Building at Institutions of Higher Education in Chongqing
CXTDG201602013
Urumqi Science and Technology Plan
Y161320008
Chongqing Municipal Education Commission
KJ1400321
KJ1605202
National Science Fund for Distinguished Young Scholars
51425801
National Natural Science Foundation of China
11372366
51508059
This is work is jointly supported by the National Key Research and Development Program of China (2017YFC0806007), the Science and Technology Construction Project of Ministry of Transport of China (2015319814020), the Technology Innovation Project of Chongqing Social and People's Livelihood (CSTC2016SHMSZX30026), the Program for Innovation Team Building at Institutions of Higher Education in Chongqing (CXTDG201602013), the Urumqi Science and Technology Plan (Y161320008), the Scientific and Technological Research Program of Chongqing Municipal Education Commission (KJ1400321 and KJ1605202), the National Science Fund for Distinguished Young Scholars (51425801), and the National Natural Science Foundation of China (11372366 and 51508059).
开放获取: gold
输出日期: 2018-03-05
第 2 条，共 25 条
标题: Numerical simulation on the performance of thermosyphon adopted to mitigate thaw settlement of embankment in sandy permafrost zone
作者: Chen, L (Chen, Lin); Yu, WB (Yu, Wenbing); Lu, Y (Lu, Yan); Liu, WB (Liu, Weibo)
来源出版物: APPLIED THERMAL ENGINEERING 卷: 128 页: 1624-1633 DOI: 10.1016/j.applthermaleng.2017.09.130 出版年: JAN 5 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 17
使用次数 (2013 年至今): 17
引用的参考文献数: 44
摘要: Desertification and climate warming have affected the stability of the crushed-rock interlayer embankment of the Qinghai-Tibet Railway (QTR) in the permafrost zone. The two-phase closed thermosyphon (TPCT) is adopted to mitigate the problem in sandy permafrost zone. A composite heat transfer model, including air convection in the crushed-rock interlayer, the air-TPCT-soil coupled heat transfer for TPCTs system and the heat conduction with phase change in the soil layers, is developed based on the equivalent thermal resistance for the TPCf. And an increase in average air temperature by 0.04 degrees C a(-1) was also simulated. The numerical results indicate that TPCTs play rapidly a cooling effect and approach a thermal balance state after 10 years of construction. TPCfs installed at the embankment slope effectively ease the underlying permafrost degeneration and cool down permafrost. However, the cooling scope and magnitude of TPCTs largely depends on working duration after installation. If the mean average air temperature is still lower than -3.5 degrees C after considering climate warming, TPCTs installed at the 10th year of QTR operation can mitigate the negative effect of climate warming and sand accumulation in the sandy permafrost zone of the Qinghai Tibet Corridor. (C) 2017 Elsevier Ltd. All rights reserved.
入藏号: WOS:000414884700151
语种: English
文献类型: Article
作者关键词: Qinghai-Tibet Railway; Climate warming; Aeolian sand; Permafrost degradation; Crushed-rock layer; Thermosyphon
KeyWords Plus: 2-PHASE CLOSED THERMOSIPHONS; QINGHAI-TIBETAN PLATEAU; CRUSHED-ROCK; COOLING PERFORMANCE; HIGHWAY EMBANKMENT; GROUNDWATER-FLOW; HEAT-EXCHANGER; REGIONS; TEMPERATURE; DESERTIFICATION
地址: [Chen, Lin; Yu, Wenbing; Lu, Yan; Liu, Weibo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China.
[Yu, Wenbing] Chongqing Jiaotong Univ, Coll Civil Engn, Chongqing 400074, Peoples R China.
[Chen, Lin] Univ Montreal, Dept Geography, Cold Reg Geomorphol & Geotech Lab, Montreal, PQ H2V 2E8, Canada.
通讯作者地址: Yu, WB (通讯作者),Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China.
电子邮件地址: chl_sc@163.com; 99155644@qq.com; 101915527@qq.com; 294115647@qq.com
出版商: PERGAMON-ELSEVIER SCIENCE LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Web of Science 类别: Thermodynamics; Energy & Fuels; Engineering, Mechanical; Mechanics
研究方向: Thermodynamics; Energy & Fuels; Engineering; Mechanics
IDS 号: FM3DO
ISSN: 1359-4311
29 字符的来源出版物名称缩写: APPL THERM ENG
ISO 来源出版物缩写: Appl. Therm. Eng.
来源出版物页码计数: 10
基金资助致谢:
基金资助机构 授权号
National Natural Science Fund
41571070
SKLFS
52Y652H21
Fund of the National Key Basic Research and Development Program
2012CB026102
CAS
QYZDY-SSW-DQC015
QYZDY-SSW-DQC011
HHS-TSS-STS-1502
This study was supported by the National Natural Science Fund (41571070), the Fund of SKLFS (52Y652H21), the Fund of the National Key Basic Research and Development Program (2012CB026102), the Funds of Key Research Program of Frontier Sciences of CAS (QYZDY-SSW-DQC015, QYZDY-SSW-DQC011) and fund HHS-TSS-STS-1502.
输出日期: 2018-03-05
第 3 条，共 25 条
标题: Size Effect Studies on Tensile Tests for Hot Stamping Steel
作者: Chen, XD (Chen, Xiaodu); Li, YY (Li, Yuanyuan); Han, XH (Han, Xianhong); Zhang, JB (Zhang, Junbo)
来源出版物: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 卷: 27 期: 2 页: 640-647 DOI: 10.1007/s11665-018-3135-y 出版年: FEB 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 24
摘要: Tensile tests have been widely used to determine basic mechanical properties of materials. However, the properties measured may be related to geometrical factors of the tested samples especially for high-strength steels; this makes the properties' definitions and comparisons difficult. In this study, a series of tensile tests of ultra-high-strength hot-stamped steel were performed; the geometric shapes and sizes as well as the cutting direction were modified. The results demonstrate that the hot-stamped parts were isotropic and the cutting direction had no effect; the measured strengths were practically unrelated to the specimen geometries, including both size and shape. The elongations were slightly related to sample sizes within the studied range but highly depended on the sample shape, represented by the coefficient K. Such phenomena were analyzed and discussed based on microstructural observations and fracture morphologies. Moreover, two widely used elongation conversion equations, the Oliver formula and Barba's law, were introduced to verify their applicability, and a new interpolating function was developed and compared.
入藏号: WOS:000424305800031
语种: English
文献类型: Article
作者关键词: elongation conversion; hot stamping steels; sample geometry; tensile test
KeyWords Plus: BORON STEEL
地址: [Chen, Xiaodu; Li, Yuanyuan; Han, Xianhong] Shanghai Jiao Tong Univ, Dept Plast Technol, Shanghai 200030, Peoples R China.
[Zhang, Junbo] Chongqing Jiaotong Univ, Coll Civil Engn, Chongqing 400074, Peoples R China.
通讯作者地址: Han, XH (通讯作者),Shanghai Jiao Tong Univ, Dept Plast Technol, Shanghai 200030, Peoples R China.
电子邮件地址: hanxh@sjtu.edu.cn
出版商: SPRINGER
出版商地址: 233 SPRING ST, NEW YORK, NY 10013 USA
Web of Science 类别: Materials Science, Multidisciplinary
研究方向: Materials Science
IDS 号: FV1FE
ISSN: 1059-9495
eISSN: 1544-1024
29 字符的来源出版物名称缩写: J MATER ENG PERFORM
ISO 来源出版物缩写: J. Mater. Eng. Perform.
来源出版物页码计数: 8
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
51775336
U1564203
Scientific and Technological Research Program of Chongqing Municipal Education Commission
KJ1400333
This work was supported by the National Natural Science Foundation of China under Grants 51775336, U1564203, and Scientific and Technological Research Program of Chongqing Municipal Education Commission through under Grant KJ1400333.
输出日期: 2018-03-05
第 4 条，共 25 条
标题: Mechanical behavior of multilayer GO carbon-fiber cement composites
作者: Chen, ZS (Chen, Zeng-shun); Zhou, X (Zhou, Xiao); Wang, X (Wang, Xu); Guo, P (Guo, Peng)
来源出版物: CONSTRUCTION AND BUILDING MATERIALS 卷: 159 页: 205-212 DOI: 10.1016/j.conbuildmat.2017.10.094 出版年: JAN 20 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 1
使用次数 (2013 年至今): 1
引用的参考文献数: 28
摘要: Graphene oxide (GO) has attracted much attention due to its dispersibility in water, high aspect ratio and excellent mechanical properties. In this study, the mechanical behaviors of multilayer GO carbon-fiber cement composites were experimentally investigated. The experiments of compressive strength and the flexural tensile strength of the composites were performed. For the purpose comparison and explanation, the mechanical properties of GO cement and carbon-fiber cement were also investigated. The results show that the compressive strength of the GO carbon-fiber cement composite with adding 0.06% GO and 1% carbon-fiber was increased by 23.89%, whereas the increment of the flexural tensile strength of the composite was increased by 138.44%. The results were explained with respect to the mechanical behavior of GO cement specimens with incorporating different percentages of GO, and the microstructures of the composites observed by Scanning Electron Microscopy (SEM). The present study not only advanced our understanding of mechanical behaviors of multilayer carbon-fiber cements, but the results can be utilized for civil and transportation structures to improve the performance of the structures. (C) 2017 Elsevier Ltd. All rights reserved.
入藏号: WOS:000423643200021
语种: English
文献类型: Article
作者关键词: Graphene oxide; Carbon-fiber; Mechanical behavior; SEM
KeyWords Plus: HIGH-PERFORMANCE CONCRETE; GRAPHENE OXIDE; RHEOLOGICAL PROPERTIES; COMPRESSIVE STRENGTH; PORTLAND-CEMENT; PASTE; HYDRATION; MICROSTRUCTURE; REINFORCEMENT; RESISTANCE
地址: [Chen, Zeng-shun; Zhou, Xiao; Wang, Xu; Guo, Peng] Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China.
[Chen, Zeng-shun] Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China.
[Wang, Xu] Univ Illinois, Dept Civil & Environm Engn, Urbana, IL 61801 USA.
通讯作者地址: Wang, X (通讯作者),Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China.
电子邮件地址: zchenba@ust.hk; xuwang@cqjtu.edu.cn
出版商: ELSEVIER SCI LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Web of Science 类别: Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary
研究方向: Construction & Building Technology; Engineering; Materials Science
IDS 号: FU1XQ
ISSN: 0950-0618
eISSN: 1879-0526
29 字符的来源出版物名称缩写: CONSTR BUILD MATER
ISO 来源出版物缩写: Constr. Build. Mater.
来源出版物页码计数: 8
基金资助致谢:
基金资助机构 授权号
National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials (Chongqing Jiaotong University), China
LHSYS-2016-003
The work described in this paper was supported by the National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials (Chongqing Jiaotong University), China (Fund No. LHSYS-2016-003). Also, the authors appreciate the use of the testing facility, as well as the technical assistance provided by the National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials (Chongqing Jiaotong University).
输出日期: 2018-03-05
第 5 条，共 25 条
标题: Tolerance Dominance Relation in Incomplete Ordered Decision Systems
作者: Guan, LH (Guan, Lihe); Huang, DR (Huang, Darong); Han, FQ (Han, Fengqing)
来源出版物: INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS 卷: 33 期: 1 页: 33-48 DOI: 10.1002/int.21932 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 7
使用次数 (2013 年至今): 7
引用的参考文献数: 45
摘要: To deal with inconsistencies coming from consideration of criteria, that is, attributes with preference-ordered domains (scales), such as product quality, market share, and debt ratio, the dominance-based rough set approach has been proposed. However, it is not much useful for analyzing incomplete information. In this paper, we attempt to present research focusing on incomplete ordered decision systems where all attributes are considered as criteria and some objects' criterion values are unknown. Under the assumption that all unknown values are the "do not care" semantics, the concept of tolerance dominance relation is introduced. Then, the rough approximations induced by it are obtained. And their properties are investigated. Especially, the important properties of rough approximations, such as rough inclusion, complementarity, identity, and monotonicity, are preserved well-known in the presented methodology. Moreover, an example is employed to illustrate these results. We expand the potential applications of dominance-based rough set approach. (C) 2017 Wiley Periodicals, Inc.
入藏号: WOS:000415142000003
语种: English
文献类型: Article
KeyWords Plus: ROUGH SET APPROACH; VALUED INFORMATION-SYSTEMS; PREFERENCE RELATIONS; APPROXIMATIONS; RULES; REDUCTS
地址: [Guan, Lihe; Huang, Darong; Han, Fengqing] Chongqing Jiaotong Univ, Sch Math & Stat, Chongqing 400074, Peoples R China.
通讯作者地址: Guan, LH (通讯作者),Chongqing Jiaotong Univ, Sch Math & Stat, Chongqing 400074, Peoples R China.
电子邮件地址: guanlihe@cqjtu.edu.cn
出版商: WILEY
出版商地址: 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
Web of Science 类别: Computer Science, Artificial Intelligence
研究方向: Computer Science
IDS 号: FM6EI
ISSN: 0884-8173
eISSN: 1098-111X
29 字符的来源出版物名称缩写: INT J INTELL SYST
ISO 来源出版物缩写: Int. J. Intell. Syst.
来源出版物页码计数: 16
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China (NSFC)
61573076
61304104
Natural Science Foundation Project of CQ CSTC
cstc2015shmszx30004
Scientific Research Foundation of the High Level Scholars of Chongqing Jiaotong University
This work is supported by the National Natural Science Foundation of China (NSFC) under grant numbers 61573076 and 61304104, the Natural Science Foundation Project of CQ CSTC under grant number cstc2015shmszx30004, and the Scientific Research Foundation of the High Level Scholars of Chongqing Jiaotong University (2013).
开放获取: gold
输出日期: 2018-03-05
第 6 条，共 25 条
标题: Modeling for Assessment of Long-Term Behavior of Prestressed Concrete Box-Girder Bridges
作者: Huang, HD (Huang, Haidong); Huang, SS (Huang, Shan-Shan); Pilakoutas, K (Pilakoutas, Kypros)
来源出版物: JOURNAL OF BRIDGE ENGINEERING 卷: 23 期: 3 文献号: 04018002 DOI: 10.1061/(ASCE)BE.1943-5592.0001210 出版年: MAR 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 3
使用次数 (2013 年至今): 3
引用的参考文献数: 37
摘要: Large-span prestressed concrete (PC) box-girder bridges suffer excessive vertical deflections and cracking. Recent serviceability failures in China show that the current Chinese standard modeling approach fails to accurately predict long-term deformations of large box-girder bridges. This hinders the efforts of inspectors to conduct satisfactory structural assessments and make decisions on potential repair and strengthening. This study presents a model-updating approach that aims to assess the models used in the current Chinese standard and improve the accuracy of numerical modeling of the long-term behavior of box-girder bridges, calibrated against data obtained from a bridge in service. A three-dimensional finite-element model representing the long-term behavior of box-girder sections is initially established. Parametric studies are then conducted to determine the relevant influencing parameters and to quantify the relationships between those and the behavior of box-girder bridges. Genetic algorithm optimization, based on the response-surface method (RSM), is used to determine realistic creep and shrinkage levels and prestress losses. The modeling results correspond well with the measured historic deflections and the observed cracks. This approach can lead to more accurate bridge assessments, which result in safer strengthening and more economic maintenance plans. (C) 2018 American Society of Civil Engineers.
入藏号: WOS:000422835600014
语种: English
文献类型: Article
作者关键词: Prestressed concrete (PC) girder bridge; Creep; Shrinkage; Effective prestress forces; Response-surface method (RSM); Parameter identification
KeyWords Plus: FINITE-ELEMENT MODEL; GENETIC ALGORITHM; OPTIMUM DESIGN; PREDICTION; CREEP; SHRINKAGE
地址: [Huang, Haidong] Chongqing Jiaotong Univ, Dept Bridge Engn, Chongqing 400074, Peoples R China.
[Huang, Shan-Shan; Pilakoutas, Kypros] Univ Sheffield, Dept Civil & Struct Engn, Sheffield S1 3JD, S Yorkshire, England.
通讯作者地址: Huang, HD (通讯作者),Chongqing Jiaotong Univ, Dept Bridge Engn, Chongqing 400074, Peoples R China.
电子邮件地址: huanghaidong@cqjtu.edu.cn
出版商: ASCE-AMER SOC CIVIL ENGINEERS
出版商地址: 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Web of Science 类别: Engineering, Civil
研究方向: Engineering
IDS 号: FT0RM
ISSN: 1084-0702
eISSN: 1943-5592
29 字符的来源出版物名称缩写: J BRIDGE ENG
ISO 来源出版物缩写: J. Bridge Eng.
来源出版物页码计数: 15
基金资助致谢:
基金资助机构 授权号
Research Fund for the Doctoral Program of Higher Education of China
20125522120001
The authors acknowledge the financial support of the Research Fund for the Doctoral Program of Higher Education of China (Grant 20125522120001).
输出日期: 2018-03-05
第 7 条，共 25 条
标题: MULTIPLE SOLUTIONS OF FRACTIONAL KIRCHHOFF EQUATIONS INVOLVING A CRITICAL NONLINEARITY
作者: Jin, H (Jin, Hua); Liu, WB (Liu, Wenbin); Zhang, JJ (Zhang, Jianjun)
来源出版物: DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES S 卷: 11 期: 3 特刊: SI 页: 533-545 DOI: 10.3934/dcdss.2018029 出版年: JUN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 1
使用次数 (2013 年至今): 1
引用的参考文献数: 35
摘要: In this paper, we are concerned with the following fractional Kirchhoff equation
{ (a + b integral N-R vertical bar (-Delta)s/2 u vertical bar(2)) (-Delta)(s)(u) = lambda u + mu vertical bar u vertical bar(q-2) u + vertical bar u vertical bar(s)(2)*(-2)u in Omega, R-N\Omega in u=0
where N > 2s, a,b,lambda,mu > 0, s is an element of (0,1) and Omega is a boundeden domain with continuous boundary. Here (-Delta)(s) is the fractional Laplacian operator. For 2 < q <="min" {4,2(s)(*)} we prove that if b is small or is large, the problem above admits multiple solutions by virtue of a linking theorem due to g. cerami, d. fortunato and m. struwe [7, theorem 2.5].
入藏号: WOS:000423042500011
语种: English
文献类型: Article
作者关键词: Fractional Kirchhoff equation; multiple solutions; critical nonlinearity
KeyWords Plus: CRITICAL SOBOLEV EXPONENTS; BREZIS-NIRENBERG RESULT; POSITIVE SOLUTIONS; LOW DIMENSION; LAPLACIAN; EXISTENCE; BIFURCATION; BEHAVIOR; OPERATOR; SPACES
地址: [Jin, Hua; Liu, Wenbin] China Univ Min & Technol, Coll Sci, Xuzhou 221116, Peoples R China.
[Zhang, Jianjun] Chongqing Jiaotong Univ, Coll Mathemat & Stat, Chongqing 400074, Peoples R China.
通讯作者地址: Liu, WB (通讯作者),China Univ Min & Technol, Coll Sci, Xuzhou 221116, Peoples R China.
电子邮件地址: huajin@cumt.edu.cn; liuwenbin-xz@163.com; zhangjianjun09@tsinghua.org.cn
出版商: AMER INST MATHEMATICAL SCIENCES-AIMS
出版商地址: PO BOX 2604, SPRINGFIELD, MO 65801-2604 USA
Web of Science 类别: Mathematics, Applied
研究方向: Mathematics
IDS 号: FT3JD
ISSN: 1937-1632
eISSN: 1937-1179
29 字符的来源出版物名称缩写: DISCRETE CONT DYN-S
ISO 来源出版物缩写: Discret. Contin. Dyn. Syst.-Ser. S
来源出版物页码计数: 13
基金资助致谢:
基金资助机构 授权号
NSFC
11271364
11791240172
Science Foundation of Chongqing Jiaotong University
15JDKJC-B033
The first and second author were supported by NSFC (11271364), the third author was partially supported by NSFC(11791240172) and the Science Foundation of Chongqing Jiaotong University (15JDKJC-B033).
输出日期: 2018-03-05
第 8 条，共 25 条
标题: Laboratory evaluation of electromagnetic density gauges for hot-mix asphalt mixture density measurement
作者: Leng, Z (Leng, Zhen); Zhang, ZY (Zhang, Zeyu); Zhang, Y (Zhang, Yuan); Wang, YY (Wang, Yangyang); Yu, HY (Yu, Huayang); Ling, TQ (Ling, Tianqing)
来源出版物: CONSTRUCTION AND BUILDING MATERIALS 卷: 158 页: 1055-1064 DOI: 10.1016/j.conbuildmat.2017.09.186 出版年: JAN 15 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 26
摘要: This paper presents a laboratory study aiming to evaluate the performance of electromagnetic (EM) density gauges as a non-destructive tool for hot mix asphalt (HMA) density measurement. In total, 36 HMA testing slabs with different compositions were prepared in laboratory. EM density gauge data were collected from these slabs using two common types of gauges, i.e., PQI 301 and PaveTracker 2701B, and compared with their bulk densities measured by the standard saturated surface dry (SSD) method. It was found that measurement direction, asphalt binder content, mixture air void content, and thickness of the testing slabs do not affect the accuracy of the EM density gauges. However, EM density gauge measurements are affected by the presence of moisture, gradation of asphalt mixture and gauge calibration method. It was also concluded that the accuracy of PaveTracker with mix calibration is comparable to that of the conventional standard method. (C) 2017 Elsevier Ltd. All rights reserved.
入藏号: WOS:000418212400101
语种: English
文献类型: Article
作者关键词: Asphalt mixture; Density; Electromagnetic density gauge; Evaluation
KeyWords Plus: AIR VOID CONTENT; PAVEMENT DENSITY; PREDICTION; DAMAGE
地址: [Leng, Zhen; Zhang, Zeyu; Zhang, Yuan; Wang, Yangyang; Yu, Huayang] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China.
[Ling, Tianqing] Chongqing Jiaotong Univ, Fac Architecture & Urban Planning, Chongqing, Peoples R China.
通讯作者地址: Leng, Z (通讯作者),Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China.
电子邮件地址: zhen.leng@polyu.edu.hk; zeyu.zhang@polyu.edu.hk; yuan.yz.zhang@polyu.edu.hk; 1048386064@qq.com; huayang.yu@connect.polyu.hk; lingtq@163.com
作者识别号:
作者 ResearcherID 号 ORCID 号
Zhang, Yuan O-9358-2017
LENG, Zhen 0000-0002-7797-1134
出版商: ELSEVIER SCI LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Web of Science 类别: Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary
研究方向: Construction & Building Technology; Engineering; Materials Science
IDS 号: FQ2UB
ISSN: 0950-0618
eISSN: 1879-0526
29 字符的来源出版物名称缩写: CONSTR BUILD MATER
ISO 来源出版物缩写: Constr. Build. Mater.
来源出版物页码计数: 10
基金资助致谢:
基金资助机构 授权号
Construction Industry Council (CIC) of Hong Kong
K-ZJK6
The authors sincerely acknowledge the funding support from the Construction Industry Council (CIC) of Hong Kong (Project Number: K-ZJK6). The support from the Welcome Construction Co., Ltd. by providing the electromagnetic density gauges used in this study is also highly appreciated.
输出日期: 2018-03-05
第 9 条，共 25 条
标题: Diffusion model of oxygen in c-axis oriented YBa2Cu3O7-delta films
作者: Li, L (Li, L.); Huang, DM (Huang, D. M.); Wang, N (Wang, N.); Sun, YH (Sun, Y. H.); Zhou, C (Zhou, C.)
来源出版物: PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 卷: 544 页: 1-5 DOI: 10.1016/j.physc.2017.10.016 出版年: JAN 15 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 7
使用次数 (2013 年至今): 7
引用的参考文献数: 18
摘要: The relationship between microstructure and diffusion of oxygen in YBCO films are studied in this work. The dislocation structure in magnetron sputtered c-axis oriented YBCO films deposited on (100) SrTiO3 substrates consists of vertical (// c-axis) screw dislocation forests together with layered horizontal (perpendicular to c-caxis) edge dislocation net-works. It is found that in the oxygenation process of YBCO films, oxygen diffusion is greatly enhanced by short circuit paths which we suggest to be the horizontally (perpendicular to c-axis) layered edge dislocation net-works. Base on the structure of c-axis oriented YBCO films, the oxygen diffusion process was examined by applying the cylinder diffusion model. The diffusion coefficient of oxygen and the corresponding activation energy were measured. (C) 2017 Elsevier B.V. All rights reserved.
入藏号: WOS:000418718600001
语种: English
文献类型: Article
作者关键词: Oxygenation process; Oxygen diffusion; YBa2Cu3O7 thin film; Dislocation structure; Diffusion model
KeyWords Plus: TRACER DIFFUSION; SINGLE-CRYSTAL; THIN-FILMS; GROWTH; MECHANISM
地址: [Li, L.; Huang, D. M.; Wang, N.; Sun, Y. H.; Zhou, C.] Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing 400074, Peoples R China.
[Li, L.; Huang, D. M.; Wang, N.; Sun, Y. H.; Zhou, C.] Chongqing Jiaotong Univ, Natl Joint Engn Labs Traff Civil Mat, Chongqing 400074, Peoples R China.
通讯作者地址: Li, L (通讯作者),Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing 400074, Peoples R China.
电子邮件地址: lili196910@126.com
出版商: ELSEVIER SCIENCE BV
出版商地址: PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Web of Science 类别: Physics, Applied
研究方向: Physics
IDS 号: FQ9YU
ISSN: 0921-4534
eISSN: 1873-2143
29 字符的来源出版物名称缩写: PHYSICA C
ISO 来源出版物缩写: Physica C
来源出版物页码计数: 5
基金资助致谢:
基金资助机构 授权号
basic and advanced research project of Chongqing Science and Technology Commission
cstc2017jcyjAX0157
science and technology research project of Chongqing Education Commission
KJ1400309
This work has been supported by the basic and advanced research project of Chongqing Science and Technology Commission (grant no. cstc2017jcyjAX0157), and supported by the science and technology research project of Chongqing Education Commission (grant no. KJ1400309).
输出日期: 2018-03-05
第 10 条，共 25 条
标题: Influences of heat input, welding sequence and external restraint on twisting distortion in an asymmetrical curved stiffened panel
作者: Liang, W (Liang, Wei); Deng, D (Deng, Dean)
来源出版物: ADVANCES IN ENGINEERING SOFTWARE 卷: 115 页: 439-451 DOI: 10.1016/j.advengsoft.2017.11.002 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 7
使用次数 (2013 年至今): 7
引用的参考文献数: 27
摘要: Welding distortion not only degrades the fabrication accuracy of ship hull blocks but also decreases the productivity due to correction works. The accurate prediction of welding-induced distortion will help control the dimension accuracy. In this study, a computational approach based on inherent strain theory and interface element method was employed to efficiently and precisely estimate welding-induced deformation for large welded structures generated during assembly process. In the proposed approach, the local shrinkage due to heat input were considered by inherent strain components. On the other hand, the gap as well misalignment between the two parts to be joined, and the change of stiffness during assembly process were taken into account by interface elements. Meanwhile, the geometrical nonlinearity was included in the developed computational approach. In the current study, the features of welding deformation in an asymmetrical curved stiffened panel were numerically investigated by mean of the new computational approach. In addition, the influences of heat input, welding sequence and external restraint on the twisting distortion of the curved stiffened panel were further studied.
入藏号: WOS:000416677500033
语种: English
文献类型: Article
作者关键词: Welding deformation; Twisting distortion; Curved stiffened panel; Inherent deformation; Interface element
KeyWords Plus: NUMERICAL-SIMULATION; INTERFACE ELEMENT; INHERENT STRAIN; DEFORMATION; PREDICTION
地址: [Liang, Wei] Chongqing Jiaotong Univ, Coll Mechatron & Automot Engn, 66 Xuefu Rd, Chongqing 400074, Peoples R China.
[Liang, Wei] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China.
[Deng, Dean] Chongqing Univ, Coll Mat Sci & Engn, 174 Shazhengjie, Chongqing 400045, Peoples R China.
通讯作者地址: Deng, D (通讯作者),Chongqing Univ, Coll Mat Sci & Engn, 174 Shazhengjie, Chongqing 400045, Peoples R China.
电子邮件地址: deandeng@cqu.edu.cn
出版商: ELSEVIER SCI LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Web of Science 类别: Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering; Engineering, Multidisciplinary
研究方向: Computer Science; Engineering
IDS 号: FO2ZX
ISSN: 0965-9978
eISSN: 1873-5339
29 字符的来源出版物名称缩写: ADV ENG SOFTW
ISO 来源出版物缩写: Adv. Eng. Softw.
来源出版物页码计数: 13
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
51375518
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology
AWJ-Z17-03
This research was supported by National Natural Science Foundation of China [Project No. 51375518], and State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology [Grant No. AWJ-Z17-03].
输出日期: 2018-03-05
第 11 条，共 25 条
标题: Shear Strength between Poroelastic Road Surface and Sublayer with Different Bonding Agents
作者: Liao, GY (Liao, Gongyun); Wang, H (Wang, Hao); Zhu, HZ (Zhu, Hongzhou); Sun, PX (Sun, Peixiang); Chen, HQ (Chen, Huaqing)
来源出版物: JOURNAL OF MATERIALS IN CIVIL ENGINEERING 卷: 30 期: 3 文献号: 04018017 DOI: 10.1061/(ASCE)MT.1943-5533.0002216 出版年: MAR 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 1
使用次数 (2013 年至今): 1
引用的参考文献数: 22
摘要: Insufficient bonding strength between a poroelastic road surface (PERS) and a sublayer usually induces premature delamination failure. The objective of this paper was to investigate the shear bonding strength of the PERS-sublayer interface with different bonding agents and develop polyurethane-bound grain (PUG) as an alternative bonding agent. The inclined shear test was utilized to measure shear bonding strengths of control (without bonding agents) and interface-treated samples. The effects of polyurethane content within PERS, sublayer type, temperature, and freeze-thaw conditions on PERS-sublayer shear bonding strengths were investigated for control samples. Shear bonding strengths between the PERS and sublayer with a PUG layer were compared to those with epoxy asphalt and polyurethane for interface-treated samples. It was found that shear bonding strengths between PERS and asphalt-bound sublayers substantially decreased, with the increase of temperature or after one freeze-thaw cycle. Shear bonding strengths between PERS and asphalt-bound sublayers were smaller than the ones between PERS and cement-bound sublayers, regardless of polyurethane content, temperature, or freeze-thaw condition. The PUG layer enhanced PERS-sublayer interface bonding and achieved comparative bonding strength to epoxy asphalt, which was greater than the bonding strength brought by pure polyurethane. A PUG layer with 7% polyurethane produced more than 1.5-MPa shear bonding strength at 60 degrees C for the grain size considered in this study. (C) 2018 American Society of Civil Engineers.
入藏号: WOS:000422885000051
语种: English
文献类型: Article
作者关键词: Polyurethane; Polyurethane-bound grain; Poroelastic road surface; Interface bonding strength; Inclined shear test
KeyWords Plus: ASPHALT; PAVEMENTS; LAYER
地址: [Liao, Gongyun; Sun, Peixiang; Chen, Huaqing] Southeast Univ, Sch Transportat, 2 Sipailou, Nanjing 210096, Jiangsu, Peoples R China.
[Wang, Hao] Rutgers State Univ, Dept Civil & Environm Engn, Piscataway, NJ 08854 USA.
[Zhu, Hongzhou] Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 400074, Peoples R China.
通讯作者地址: Liao, GY (通讯作者),Southeast Univ, Sch Transportat, 2 Sipailou, Nanjing 210096, Jiangsu, Peoples R China.
电子邮件地址: lg@seu.edu.cn; hwang.cee@rutgers.edu; zhuhongzhouchina@126.com; sunpx@seu.edu.cn; chenhq@seu.edu.cn
出版商: ASCE-AMER SOC CIVIL ENGINEERS
出版商地址: 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
Web of Science 类别: Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary
研究方向: Construction & Building Technology; Engineering; Materials Science
IDS 号: FT1HB
ISSN: 0899-1561
eISSN: 1943-5533
29 字符的来源出版物名称缩写: J MATER CIVIL ENG
ISO 来源出版物缩写: J. Mater. Civ. Eng.
来源出版物页码计数: 9
基金资助致谢:
基金资助机构 授权号
Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
The project was sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.
输出日期: 2018-03-05
第 12 条，共 25 条
标题: {10-12} twin nucleation induced by FIB micro-stress in magnesium single crystal
作者: Lou, C (Lou, Chao); Yu, JP (Yu, Jiangping); Liu, L (Liu, Li); Ren, Y (Ren, Yi); Zhang, XY (Zhang, Xiyan)
来源出版物: MATERIALS LETTERS 卷: 210 页: 139-142 DOI: 10.1016/j.matlet.2017.09.031 出版年: JAN 1 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 11
使用次数 (2013 年至今): 11
引用的参考文献数: 18
摘要: In this study, Mg single crystals (99.99% purity) were subjected to focused ion beam (FIB) bombardment perpendicular and parallel to the c-axis of the hexagonal close packed (HCP) lattice respectively. The research results indicate that the {10 - 12} twin nucleation induced by FIB micro-stress in magnesium single crystal is dependent on the applied ion current and the crystal orientation. The incident Ga+ ions dose increases with ion current, which would enhance the FIB loading micro-stress. And when the FIB incident direction is parallel to the close-packed (0001) plane, there would be more ion-atom interactions during FIB bombardment. Both processing mechanisms could lead to larger precipitate-matrix misfit area and further microstructure damage, which might eventually facilitate {10 - 12} twin nucleation. (C) 2017 Elsevier B.V. All rights reserved.
入藏号: WOS:000413124100037
语种: English
文献类型: Article
作者关键词: Magnesium single crystal; Focused ion beam; {10-12} twin nucleation; Micro-stress
KeyWords Plus: NANOINDENTATION BEHAVIOR; ALLOY; DEFORMATION; CU
地址: [Lou, Chao; Ren, Yi] Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China.
[Lou, Chao; Yu, Jiangping; Zhang, Xiyan] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China.
[Liu, Li] Chongqing Jiaotong Univ, Int Coll, Chongqing 400074, Peoples R China.
通讯作者地址: Lou, C (通讯作者),Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China.
Zhang, XY (通讯作者),Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China.
电子邮件地址: louchao84@163.com; kehen888@163.com
出版商: ELSEVIER SCIENCE BV
出版商地址: PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Web of Science 类别: Materials Science, Multidisciplinary; Physics, Applied
研究方向: Materials Science; Physics
IDS 号: FJ9TO
ISSN: 0167-577X
eISSN: 1873-4979
29 字符的来源出版物名称缩写: MATER LETT
ISO 来源出版物缩写: Mater. Lett.
来源出版物页码计数: 4
基金资助致谢:
基金资助机构 授权号
'National Natural Science Foundation of China' - 'China'
51601025
Chongqing Research Program of Basic Research and Frontier Technology
cstc2016jcyjA0553
cstc2016jcyjA0374
Scientific and Technological Research Program of Chongqing Municipal Education Commission
KJ1705117
This work was supported by 'National Natural Science Foundation of China' - 'China' (Nos. 51601025), Chongqing Research Program of Basic Research and Frontier Technology (Nos. cstc2016jcyjA0553 and cstc2016jcyjA0374) and Scientific and Technological Research Program of Chongqing Municipal Education Commission (Nos. KJ1705117). The authors thank Dr. Bingshu Wang (College of Materials Science and Engineering, Fuzhou University) for assistance with the SF analysis.
输出日期: 2018-03-05
第 13 条，共 25 条
标题: Experimental study on the thermal conductivity of aeolian sand from the Tibetan Plateau
作者: Lu, Y (Lu, Yan); Yu, WB (Yu, Wenbing); Hu, D (Hu, Da); Liu, WB (Liu, Weibo)
来源出版物: COLD REGIONS SCIENCE AND TECHNOLOGY 卷: 146 页: 1-8 DOI: 10.1016/j.coldregions.2017.11.006 出版年: FEB 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 1
使用次数 (2013 年至今): 1
引用的参考文献数: 24
摘要: Aeolian sand is an important factor, which can affect the permafrost environment and infrastructures on the Tibetan Plateau. The thermal conductivity of aeolian sand is an important parameter for analyzing the thermal regime of the ground in cold regions. This paper presents the test results of the thermal conductivity of aeolian sand sampled from the Tibetan Plateau in unfrozen state with temperature 20 degrees C and in frozen state. The aeolian sand samples were measured with water content ranging from 3% to 15% and dry density ranging from 1400 to 1650 kgm(-3). The results show that the thermal conductivity increased with water content and dry density. Some methods that have been developed for calculating the thermal conductivity of soils are applied to predict the thermal conductivity of aeolian sand. However, these methods all have significant deviations. From the test data, a simple model is proposed as a function of the degree of saturation and the volume fraction of each phase to calculate the thermal conductivity of aeolian sand. The calculated results obtained from the proposed model agree well with the test data. The mean deviations are 2.15% and 4.28% for the unfrozen and frozen states, respectively.
入藏号: WOS:000423963300001
语种: English
文献类型: Article
作者关键词: Aeolian sand; Thermal conductivity; Cold regions; Calculation model
KeyWords Plus: SOILS; GEOMATERIALS
地址: [Lu, Yan; Yu, Wenbing; Hu, Da; Liu, Weibo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China.
[Yu, Wenbing] Chongqing Jiaotong Univ, Coll Civil Engn, Chongqing, Peoples R China.
[Lu, Yan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
[Hu, Da] Texas Tech Univ, Dept Civil Environm & Construct Engn, Lubbock, TX 79416 USA.
通讯作者地址: Yu, WB (通讯作者),Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China.
电子邮件地址: yuwb@lzb.ac.cn
出版商: ELSEVIER SCIENCE BV
出版商地址: PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Web of Science 类别: Engineering, Environmental; Engineering, Civil; Geosciences, Multidisciplinary
研究方向: Engineering; Geology
IDS 号: FU6LE
ISSN: 0165-232X
eISSN: 1872-7441
29 字符的来源出版物名称缩写: COLD REG SCI TECHNOL
ISO 来源出版物缩写: Cold Reg. Sci. Tech.
来源出版物页码计数: 8
基金资助致谢:
基金资助机构 授权号
Funds of Key Research Program of Frontier Sciences of CAS
QYZDYSSW-DQC015
QYZDY-SSW-DQC011
Fund of the National Key Basic Research and Development Program
2012CB026102
Fund of SKLFS
SKLFSEZT21
SKLFSEZQ41
National Natural Science Fund
41571070
HHS-TSS-STS-1502
This study was supported by the National Natural Science Fund (41571070), the Fund of SKLFS (SKLFSEZT21, SKLFSEZQ41), the Fund of the National Key Basic Research and Development Program (2012CB026102), the Funds of Key Research Program of Frontier Sciences of CAS (QYZDYSSW-DQC015, QYZDY-SSW-DQC011) and fund HHS-TSS-STS-1502.
输出日期: 2018-03-05
第 14 条，共 25 条
标题: NO removal efficiency of high-yield carbon nitride irradiated under various light sources
作者: Lu, ZZ (Lu, Zhenzhen); Liu, D (Liu, Dong); Yang, ZY (Yang, Zhiyuan); Zhou, JT (Zhou, Jianting)
来源出版物: MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING 卷: 73 特刊: SI 页: 83-91 DOI: 10.1016/j.mssp.2017.05.016 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 12
使用次数 (2013 年至今): 12
引用的参考文献数: 53
摘要: Graphitic carbon nitride (g-C3N4) is a well-known photocatalyst. In this work, the NO removal efficiency of g-C3N4 irradiated under various light sources is explored. For achieving high productivity and activity photocatalyst, the pyrolysis temperature is adjusted from 450 degrees C to 600 degrees C. All prepared g-C3N4 are put into a transparent reaction box one by one to remove the NO with the initial concentration of 1000 ppb level in air flow under real indoor illumination of three light resources: metal halide lamp, LED lamp and high pressure sodium lamp. According to the photocatalytic reaction results, the NO removal ratio of g-C3N4 synthesized under 500 degrees C can reach to 29.26% under the irradiation of metal halide lamp, overwhelming that of g-C3N4 irradiated under other light sources. Several characterization methods were adopt to analyze the photocatalytic reaction mechanism and the micro structures of g-C3N4 prepared from melamine. Because of the conduction band potential difference between g-C3N4 and melem, heterojunction of melem and g-C3N4 can form the conventiontype charge transfer, which greatly reduce the combination ratio of photogenerated electrons and holes, thus enhance the photocatalytic activity of g-C3N4 under the irradiation of metal halide lamp indicating why the g-C3N4 synthesized under 500 degrees C possesses the best NO removal efficiency among these samples. In addition, compared with other lamps, metal halide lamp is proved to be the most suitable light resource to motivate g-C3N4 because of its relatively concentrated light intensity. The present work provide us new perspectives for selecting suitable light resources and proper synthesis conditions for the generation of g-C3N4 to achieve better air purification performance in tunnels and indoors.
入藏号: WOS:000415921400013
语种: English
文献类型: Article
作者关键词: G-C3N4; Band gap; Metal halide lamp; Melem; Typical diffraction peak; Photocatalysis
KeyWords Plus: VISIBLE-LIGHT; PHOTOCATALYTIC PERFORMANCE; HYDROGEN-PRODUCTION; AIR PURIFICATION; FLUE-GAS; G-C3N4; DEGRADATION; CATALYSTS; WATER; HETEROJUNCTION
地址: [Lu, Zhenzhen; Liu, Dong; Yang, Zhiyuan] ChongQing JiaoTong Univ, Green & Funct Mat Lab, Chongqing 400074, Peoples R China.
[Zhou, Jianting] ChongQing JiaoTong Univ, Coll Civil Engn, Chongqing 400074, Peoples R China.
通讯作者地址: Lu, ZZ (通讯作者),ChongQing JiaoTong Univ, Green & Funct Mat Lab, Chongqing 400074, Peoples R China.
电子邮件地址: luzz@foxmail.com
出版商: ELSEVIER SCI LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Web of Science 类别: Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
研究方向: Engineering; Materials Science; Physics
IDS 号: FN3TD
ISSN: 1369-8001
eISSN: 1873-4081
29 字符的来源出版物名称缩写: MAT SCI SEMICON PROC
ISO 来源出版物缩写: Mater. Sci. Semicond. Process
来源出版物页码计数: 9
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
51408085
51508058
National Science Fund for Distinguished Young Scholars of China
51425801
Application and Basic Science Project of Ministry of Transport of People's Republic of China
2015319814100
China Postdoctoral Science Foundation
2015M580775
ChongQing Postdoctoral Science Special Foundation
Xm2015004
Science and Technology Project of Guizhou Provincial Transportation Department
2016-123-040
2016-123-006
This research is financially supported by the National Natural Science Foundation of China (51408085, 51508058), National Science Fund for Distinguished Young Scholars of China (51425801) the Application and Basic Science Project of Ministry of Transport of People's Republic of China (2015319814100), China Postdoctoral Science Foundation (2015M580775), ChongQing Postdoctoral Science Special Foundation (Xm2015004), Science and Technology Project of Guizhou Provincial Transportation Department (2016-123-040, 2016-123-006).
输出日期: 2018-03-05
第 15 条，共 25 条
标题: On the stability of solutions for semi-infinite vector optimization problems
作者: Peng, ZY (Peng, Zai-Yun); Peng, JW (Peng, Jian-Wen); Long, XJ (Long, Xian-Jun); Yao, JC (Yao, Jen-Chih)
来源出版物: JOURNAL OF GLOBAL OPTIMIZATION 卷: 70 期: 1 特刊: SI 页: 55-69 DOI: 10.1007/s10898-017-0553-6 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 1
被引频次合计: 1
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 27
摘要: This paper is concerned with the stability of semi-infinite vector optimization problems (SVO). Under weak assumptions, we establish sufficient conditions of the Berge-lower semicontinuity and lower Painlev-Kuratowski convergence of weak efficient solutions for (SVO) under functional perturbations of both objective functions and constraint sets. Some examples are given to illustrate that our results are new and interesting.
入藏号: WOS:000419940800004
语种: English
文献类型: Article; Proceedings Paper
会议名称: International Workshop on Modern Optimization and Applications (MOA)
会议日期: JUN 27-29, 2016
会议地点: Chinese Acad Sci, Acad Math & Syst Sci, Beijing, PEOPLES R CHINA
会议主办方: Chinese Acad Sci, Acad Math & Syst Sci
作者关键词: Stability; Semi-infinite vector optimization; Weak efficient solution; Berge-lower semicontinuous; Lower Painleve-Kuratowski convergence; Functional perturbation
KeyWords Plus: CONTINUITY; EXISTENCE
地址: [Peng, Zai-Yun] Chongqing JiaoTong Univ, Coll Math & Stat, Chongqing 400074, Peoples R China.
[Peng, Jian-Wen] Chongqing Normal Univ, Dept Math, Chongqing 400047, Peoples R China.
[Long, Xian-Jun] Chongqing Technol & Business Univ, Coll Math & Stat, Chongqing 400067, Peoples R China.
[Yao, Jen-Chih] China Med Univ, Ctr Gen Educ, Taichung 40402, Taiwan.
通讯作者地址: Peng, JW (通讯作者),Chongqing Normal Univ, Dept Math, Chongqing 400047, Peoples R China.
电子邮件地址: pengzaiyun@126.com; jwpeng168@hotmail.com; xianjunlong@hotmail.com; yaojc@mail.cmu.edu.tw
出版商: SPRINGER
出版商地址: VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Web of Science 类别: Operations Research & Management Science; Mathematics, Applied
研究方向: Operations Research & Management Science; Mathematics
IDS 号: FS6XD
ISSN: 0925-5001
eISSN: 1573-2916
29 字符的来源出版物名称缩写: J GLOBAL OPTIM
ISO 来源出版物缩写: J. Glob. Optim.
来源出版物页码计数: 15
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
11301571
11471059
Basic and Advanced Research Project of Chongqing
cstc2015jcyjB00001
cstc 464 2015jcyjBX0029
China Postdoctoral Science Foundation
cstc2017jcyjAX0382
2016T90837
2015M580774
Program for University Innovation Team of Chongqing
CXTDX201601022
CXTDX201601026
Education Committee Project Foundation of Bayu Scholar
This research was supported by the National Natural Science Foundation of China (11301571,11471059), the Basic and Advanced Research Project of Chongqing (cstc2015jcyjB00001, cstc 464 2015jcyjBX0029), cstc2017jcyjAX0382 the China Postdoctoral Science Foundation funded project (2016T90837,2015M580774), the Program for University Innovation Team of Chongqing (CXTDX201601022, CXTDX201601026) and the Education Committee Project Foundation of Bayu Scholar. The authors are grateful to the editor and two anonymous referees for valuable comments and suggestions to improve the paper.
输出日期: 2018-03-05
第 16 条，共 25 条
标题: Dynamics of complex-valued neural networks with variable coefficients and proportional delays
作者: Song, QK (Song, Qiankun); Yu, QQ (Yu, Qinqin); Zhao, ZJ (Zhao, Zhenjiang); Liu, YR (Liu, Yurong); Alsaadi, FE (Alsaadi, Fuad E.)
来源出版物: NEUROCOMPUTING 卷: 275 页: 2762-2768 DOI: 10.1016/j.neucom.2017.11.041 出版年: JAN 31 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 6
使用次数 (2013 年至今): 6
引用的参考文献数: 41
摘要: In this paper, the dynamics including boundedness and stability for a general class of complex-valued neural networks with variable coefficients and proportional delays are investigated. By employing inequality techniques and mathematical analysis method, some sufficient criteria to guarantee boundedness and global exponential stability are established for the considered neural networks. As a special case that the coefficients of networks are constants, sufficient criteria are also derived to guarantee the existence, uniqueness and global exponential stability of the equilibrium point. This work generalizes and improves previously known results, and the obtained criteria can be tested and applied easily in practice. An illustrative example demonstrates the feasibility of the proposed results. (c) 2017 Elsevier B.V. All rights reserved.
入藏号: WOS:000418370200252
语种: English
文献类型: Article
作者关键词: Complex-valued neural networks; Boundedness; Stability; Equilibrium point; Variable coefficient; Proportional delays
KeyWords Plus: TIME-VARYING DELAYS; GLOBAL EXPONENTIAL STABILITY; ASYMPTOTIC STABILITY; MISSING MEASUREMENTS; DISTRIBUTED DELAYS; SYSTEMS
地址: [Song, Qiankun] Chongqing Jiaotong Univ, Dept Math, Chongqing 400074, Peoples R China.
[Yu, Qinqin] Chongqing Jiaotong Univ, Sch Econ & Management, Chongqing 400074, Peoples R China.
[Zhao, Zhenjiang] Huzhou Univ, Dept Math, Huzhou 313000, Peoples R China.
[Liu, Yurong] Yangzhou Univ, Dept Math, Yangzhou 225002, Jiangsu, Peoples R China.
[Liu, Yurong; Alsaadi, Fuad E.] King Abdulaziz Univ, Fac Engn, Commun Syst & Networks CSN Res Grp, Jeddah 21589, Saudi Arabia.
通讯作者地址: Song, QK (通讯作者),Chongqing Jiaotong Univ, Dept Math, Chongqing 400074, Peoples R China.
电子邮件地址: qiankunsong@163.com
作者识别号:
作者 ResearcherID 号 ORCID 号
Song, Qiankun 0000-0002-7228-9371
出版商: ELSEVIER SCIENCE BV
出版商地址: PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Web of Science 类别: Computer Science, Artificial Intelligence
研究方向: Computer Science
IDS 号: FQ5AI
ISSN: 0925-2312
eISSN: 1872-8286
29 字符的来源出版物名称缩写: NEUROCOMPUTING
ISO 来源出版物缩写: Neurocomputing
来源出版物页码计数: 7
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
61773004
61473332
Program of Chongqing Innovation Team Project in University
CXTDX201601022
The authors would like to thank the editor and the reviewers for their valuable suggestions and comments which have led to a much improved paper. This work is supported by the National Natural Science Foundation of China under Grants 61773004 and 61473332, and in part by the Program of Chongqing Innovation Team Project in University under Grant CXTDX201601022.
输出日期: 2018-03-05
第 17 条，共 25 条
标题: Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal
作者: Sun, JX (Sun, Jiaoxia); Ma, XQ (Ma, Xiqin); Li, X (Li, Xiang); Fan, JX (Fan, Jianxin); Chen, QK (Chen, Qingkong); Liu, XL (Liu, Xuelian); Pan, J (Pan, Jin)
来源出版物: INTERNATIONAL JOURNAL OF POLYMER SCIENCE 文献号: 8230965 DOI: 10.1155/2018/8230965 出版年: 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 30
摘要: A ternary cationic polyacrylamide (CPAM) with the hydrophobic characteristic was prepared through ultraviolet-(UV-) initiated polymerization technique for the estrone (E1) environmental estrogen separation and removal. The monomers of acrylamide (AM), acryloyloxyethyl-trimethyl ammonium chloride (DAC), and acryloyloxyethyl dimethylbenzyl ammonium chloride (AODBAC) were used to synthesize the ternary copolymer (PADA). Fourier transform infrared spectroscopy (FT-IR), H-1 nuclear magnetic resonance spectroscopy (H-1 NMR), thermogravimetry/differential scanning calorimetry (TG/DSC), and scanning electron microscopy (SEM) were employed to characterize the structure, thermal decomposition property, and morphology of the polymers, respectively. FT-IR and H-1 NMR results indicated the successful formation of the polymers. Besides, with the introduction of hydrophobic groups (phenyl group), an irregular and porous surface morphology and a favorable thermal stability of the PADA were observed by SEM and TG/DSC analyses, respectively. At the optimal condition (pH = 7, flocculant dosage = 4.0 mg/L and E1 concentration = 0.75 mg/L), an excellent E1 flocculation performance (E1 removal rate: 90.1%, floc size: 18.3 mu m, and flocculation kinetics: 22.69 x 10(-4) s(-1)) was acquired by using the efficient flocculant PADA-3 (cationic degree = 40%, and intrinsic viscosity = 6.30 dL.g(-1)). The zeta potential and floc size analyses were used to analyze the possible flocculation mechanism for the E1 removal. Results indicated that the charge neutralization, adsorption, and birding effects were dominant in the E1 removal progress.
入藏号: WOS:000424933600001
语种: English
文献类型: Article
KeyWords Plus: WASTE-WATER; DEWATERING PROPERTIES; ENDOCRINE-DISRUPTORS; ACTIVATED-SLUDGE; BLOCK STRUCTURE; PERFORMANCE; POLYMERIZATION; PURIFICATION; COAGULATION; MECHANISM
地址: [Sun, Jiaoxia; Ma, Xiqin; Fan, Jianxin; Chen, Qingkong; Liu, Xuelian; Pan, Jin] Chongqing Jiaotong Univ, Sch River & Ocean Engn, Chongqing 400074, Peoples R China.
[Sun, Jiaoxia; Ma, Xiqin; Fan, Jianxin; Chen, Qingkong; Liu, Xuelian; Pan, Jin] Minist Educ, Key Lab Hydraul & Waterway Engn, Chongqing, Peoples R China.
[Sun, Jiaoxia; Ma, Xiqin; Fan, Jianxin; Chen, Qingkong; Liu, Xuelian; Pan, Jin] Natl Engn Res Ctr Inland Waterway Regulat, Chongqing, Peoples R China.
[Li, Xiang] Chongqing Univ Sci & Technol, Sch Civil Engn & Architecture, Chongqing 401331, Peoples R China.
通讯作者地址: Sun, JX; Ma, XQ (通讯作者),Chongqing Jiaotong Univ, Sch River & Ocean Engn, Chongqing 400074, Peoples R China.
Sun, JX; Ma, XQ (通讯作者),Minist Educ, Key Lab Hydraul & Waterway Engn, Chongqing, Peoples R China.
Sun, JX; Ma, XQ (通讯作者),Natl Engn Res Ctr Inland Waterway Regulat, Chongqing, Peoples R China.
电子邮件地址: sjx2008cqjt@126.com; xiqin_ma5917@126.com
出版商: HINDAWI LTD
出版商地址: ADAM HOUSE, 3RD FLR, 1 FITZROY SQ, LONDON, W1T 5HF, ENGLAND
Web of Science 类别: Polymer Science
研究方向: Polymer Science
IDS 号: FV9UB
ISSN: 1687-9422
eISSN: 1687-9430
29 字符的来源出版物名称缩写: INT J POLYM SCI
ISO 来源出版物缩写: Int. J. Polym. Sci.
来源出版物页码计数: 11
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
51508057
41401255
51408082
51508056
The authors are grateful for the financial support provided by the National Natural Science Foundation of China (Project nos. 51508057, 41401255, 51408082, and 51508056).
开放获取: gold
输出日期: 2018-03-05
第 18 条，共 25 条
标题: EXISTENCE OF THE UNIFORM TRAJECTORY ATTRACTOR FOR A 3D INCOMPRESSIBLE NON-NEWTONIAN FLUID FLOW
作者: Wang, CZ (Wang, Chengzhi); Zhang, MS (Zhang, Mingshu); Zhao, CD (Zhao, Caidi)
来源出版物: ACTA MATHEMATICA SCIENTIA 卷: 38 期: 1 页: 187-202 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 41
摘要: This paper studies the trajectory asymptotic behavior of a non-autonomous in-compressible non-Newtonian fluid in 3D bounded domains. In appropriate topologies, the authors prove the existence of the uniform trajectory attractor for the translation semigroup acting on the united trajectory space.
入藏号: WOS:000425076300012
语种: English
文献类型: Article
作者关键词: incompressible non-Newtonian fluid; uniform trajectory attractor; topological space
KeyWords Plus: RANDOM DIFFERENTIAL-INCLUSIONS; HIGHER-ORDER DERIVATIVES; GLOBAL ATTRACTORS; PULLBACK ATTRACTORS; UNBOUNDED-DOMAINS; MULTIVALUED SEMIPROCESSES; DYNAMICAL-SYSTEMS; EQUATIONS; SEMIFLOWS; WEAK
地址: [Wang, Chengzhi] Chongqing Jiaotong Univ, Sch River & Ocean Engn, Chongqing 400074, Peoples R China.
[Zhang, Mingshu; Zhao, Caidi] Wenzhou Univ, Dept Math & Informat Sci, Wenzhou 325035, Peoples R China.
通讯作者地址: Wang, CZ (通讯作者),Chongqing Jiaotong Univ, Sch River & Ocean Engn, Chongqing 400074, Peoples R China.
电子邮件地址: wchzhig@126.com; 450420085@qq.com; zhaocaidi2013@163.com
出版商: ELSEVIER SCIENCE INC
出版商地址: 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
Web of Science 类别: Mathematics
研究方向: Mathematics
IDS 号: FW1RE
ISSN: 0252-9602
eISSN: 1572-9087
29 字符的来源出版物名称缩写: ACTA MATH SCI
ISO 来源出版物缩写: Acta Math. Sci.
来源出版物页码计数: 16
基金资助致谢:
基金资助机构 授权号
NSFC
51209242
2011BAB09B01
11271290
NSF of Zhejiang Province
LY17A010011
Supported by NSFC (51209242, 2011BAB09B01, 11271290) and by NSF of Zhejiang Province (LY17A010011).
输出日期: 2018-03-05
第 19 条，共 25 条
标题: Bridge Structure Deformation Prediction Based on GNSS Data Using Kalman-ARIMA-GARCH Model
作者: Xin, JZ (Xin, Jingzhou); Zhou, JT (Zhou, Jianting); Yang, SX (Yang, Simon X.); Li, XQ (Li, Xiaoqing); Wang, Y (Wang, Yu)
来源出版物: SENSORS 卷: 18 期: 1 文献号: 298 DOI: 10.3390/s18010298 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 40
摘要: Bridges are an essential part of the ground transportation system. Health monitoring is fundamentally important for the safety and service life of bridges. A large amount of structural information is obtained from various sensors using sensing technology, and the data processing has become a challenging issue. To improve the prediction accuracy of bridge structure deformation based on data mining and to accurately evaluate the time-varying characteristics of bridge structure performance evolution, this paper proposes a new method for bridge structure deformation prediction, which integrates the Kalman filter, autoregressive integrated moving average model (ARIMA), and generalized autoregressive conditional heteroskedasticity (GARCH). Firstly, the raw deformation data is directly pre-processed using the Kalman filter to reduce the noise. After that, the linear recursive ARIMA model is established to analyze and predict the structure deformation. Finally, the nonlinear recursive GARCH model is introduced to further improve the accuracy of the prediction. Simulation results based on measured sensor data from the Global Navigation Satellite System (GNSS) deformation monitoring system demonstrated that: (1) the Kalman filter is capable of denoising the bridge deformation monitoring data; (2) the prediction accuracy of the proposed Kalman-ARIMA-GARCH model is satisfactory, where the mean absolute error increases only from 3.402 mm to 5.847 mm with the increment of the prediction step; and (3) in comparision to the Kalman-ARIMA model, the Kalman-ARIMA-GARCH model results in superior prediction accuracy as it includes partial nonlinear characteristics (heteroscedasticity); the mean absolute error of five-step prediction using the proposed model is improved by 10.12%. This paper provides a new way for structural behavior prediction based on data processing, which can lay a foundation for the early warning of bridge health monitoring system based on sensor data using sensing technology.
入藏号: WOS:000423286300296
语种: English
文献类型: Article
作者关键词: bridge engineering; deformation prediction; structural healthmonitoring; bridge sensor data
KeyWords Plus: TIME-SERIES ANALYSIS; PATTERN-RECOGNITION; WIND-SPEED; DECOMPOSITION; ENSEMBLE; MACHINE; HYBRID; TRENDS; FILTER
地址: [Xin, Jingzhou; Zhou, Jianting; Li, Xiaoqing] Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 400074, Peoples R China.
[Yang, Simon X.] Univ Guelph, Sch Engn, Guelph, ON N1G 2W1, Canada.
[Wang, Yu] Cardiff Univ, Sch Engn, Cardiff CF24 3AA, S Glam, Wales.
通讯作者地址: Zhou, JT (通讯作者),Chongqing Jiaotong Univ, Sch Civil Engn, Chongqing 400074, Peoples R China.
Yang, SX (通讯作者),Univ Guelph, Sch Engn, Guelph, ON N1G 2W1, Canada.
电子邮件地址: xinjz@mails.cqjtu.edu.cn; jtzhou@cqjtu.edu.cn; syang@uoguelph.ca; 622160086010@mails.cqjtu.edu.cn; WangY219@cardiff.ac.uk
作者识别号:
作者 ResearcherID 号 ORCID 号
Yang, Simon X. A-4399-2008 0000-0002-6888-7993
出版商: MDPI AG
出版商地址: ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
Web of Science 类别: Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
研究方向: Chemistry; Electrochemistry; Instruments & Instrumentation
IDS 号: FT6TI
ISSN: 1424-8220
29 字符的来源出版物名称缩写: SENSORS-BASEL
ISO 来源出版物缩写: Sensors
来源出版物页码计数: 17
基金资助致谢:
基金资助机构 授权号
National Key Research and Development Program of China
2017YFC0806007
2016YFC0802202
National Science Fund for Distinguished Young Scholars
51425801
National Natural Science Foundation of China
51708067
Scientific and Technological Project of Chongqing Municipal Education Commission
KJ1600501
This work was supported by the National Key Research and Development Program of China (2017YFC0806007, 2016YFC0802202), the National Science Fund for Distinguished Young Scholars (51425801), the National Natural Science Foundation of China (51708067) and the Scientific and Technological Project of Chongqing Municipal Education Commission (KJ1600501).
开放获取: gold
输出日期: 2018-03-05
第 20 条，共 25 条
标题: Quantitative risk assessment of freeway crash casualty using high-resolution traffic data
作者: Xu, CC (Xu, Chengcheng); Wang, Y (Wang, Yong); Liu, P (Liu, Pan); Wang, W (Wang, Wei); Bao, J (Bao, Jie)
来源出版物: RELIABILITY ENGINEERING & SYSTEM SAFETY 卷: 169 页: 299-311 DOI: 10.1016/j.ress.2017.09.005 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 10
使用次数 (2013 年至今): 10
引用的参考文献数: 47
摘要: This study aimed to investigate the impacts of traffic flow conditions on crash casualty of different collision types using high-resolution traffic data. The principle components analysis was conducted to deal with a large number of correlated lane-specific traffic variables. A four-stage random-parameters sequential logistic regression model was then developed to link the probability of crash casualty of each collision type with real-time traffic flow, weather, and geometric conditions. The results showed that the risks of injuries in sideswipe crashes increase with an increase in the speed difference between adjacent lanes, volume on right lane, and standard deviation of volume on inner lanes. The congested traffic conditions and its interaction with adverse weather decrease the risks of injuries in sideswipe crashes. For rear-end crashes, the congested traffic conditions at diverge area, and large difference in speed on right lane between upstream and downstream station in adverse weather contribute to crash casualty. Moreover, high volume on inner lanes reduce the risks of injuries in rear-end crashes. The validation results showed that the prediction accuracy at each severity level by collision types is satisfactory. (C) 2017 Elsevier Ltd. All rights reserved.
入藏号: WOS:000416187200028
语种: English
文献类型: Article
作者关键词: Crash casualty; Injury severity; Collision type; Principal component analysis; Bayesian sequential logistic regression
KeyWords Plus: INJURY-SEVERITY; STATISTICAL-ANALYSIS; MOTORCYCLIST INJURY; EMPIRICAL-ANALYSIS; ACCIDENT DATA; FLOW DATA; MODEL; FREQUENCY; SAFETY; HETEROGENEITY
地址: [Xu, Chengcheng; Liu, Pan; Wang, Wei; Bao, Jie] Southeast Univ, Jiangsu Key Lab Urban ITS, Si Pai Lou 2, Nanjing 210096, Jiangsu, Peoples R China.
[Xu, Chengcheng; Liu, Pan; Wang, Wei; Bao, Jie] Southeast Univ, Jiangsu Prov Collaborat Innovat Ctr Modern Urban, Si Pai Lou 2, Nanjing 210096, Jiangsu, Peoples R China.
[Wang, Yong] Chongqing Jiaotong Univ, Sch Econ & Management, Xuefu Rd 66, Chongqing 400074, Peoples R China.
通讯作者地址: Xu, CC (通讯作者),Southeast Univ, Jiangsu Key Lab Urban ITS, Si Pai Lou 2, Nanjing 210096, Jiangsu, Peoples R China.
Xu, CC (通讯作者),Southeast Univ, Jiangsu Prov Collaborat Innovat Ctr Modern Urban, Si Pai Lou 2, Nanjing 210096, Jiangsu, Peoples R China.
Wang, Y (通讯作者),Chongqing Jiaotong Univ, Sch Econ & Management, Xuefu Rd 66, Chongqing 400074, Peoples R China.
电子邮件地址: xuchengcheng@seu.edu.cn; yongwx6@gmail.com; pan_liu@hotmail.com; wangwei@seu.edu.cn; baojie@seu.edu.cn
出版商: ELSEVIER SCI LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Web of Science 类别: Engineering, Industrial; Operations Research & Management Science
研究方向: Engineering; Operations Research & Management Science
IDS 号: FN7GR
ISSN: 0951-8320
eISSN: 1879-0836
29 字符的来源出版物名称缩写: RELIAB ENG SYST SAFE
ISO 来源出版物缩写: Reliab. Eng. Syst. Saf.
来源出版物页码计数: 13
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
51508093
71402011
51561135003
This research was sponsored by the National Natural Science Foundation of China (Grant Nos. 51508093 and 71402011), and Projects of International Cooperation and Exchange of the National Natural Science Foundation of China (No. 51561135003). The authors would like to thank the editor and the anonymous reviewers for their constructive comments and valuable suggestions to improve the quality of the article.
输出日期: 2018-03-05
第 21 条，共 25 条
标题: Transportation Service Procurement Bid Construction Problem from Less Than Truckload Perspective
作者: Yan, F (Yan, Fang); Ma, YF (Ma, Yanfang); Xu, MJ (Xu, Manjing); Ge, XL (Ge, Xianlong)
来源出版物: MATHEMATICAL PROBLEMS IN ENGINEERING 文献号: 1728512 DOI: 10.1155/2018/1728512 出版年: 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 38
摘要: This paper presents mixed integer programming for a transportation service procurement bid construction problem from a less than full truckload perspective, in which the bidders (carriers) generate their best bid (package) using a bundled price to maximize their utility and increase the chance of winning the business. The models are developed from both the carriers and shippers perspectives to establish a relationship between the quoted price and the likelihood of winning to assist the carriers in balancing the potential benefits and the possibility of winning the bid. An intelligent algorithm based on Particle Swarm Optimization is then designed to solve the proposed model and hypothetical data sets are used to test the effectiveness and efficiency of the proposed model and algorithm.
入藏号: WOS:000423570900001
语种: English
文献类型: Article
KeyWords Plus: COMBINATORIAL AUCTIONS; GENERATION PROBLEM; TIME WINDOWS; OPTIMIZATION; ENVIRONMENT; CARRIERS
地址: [Yan, Fang; Ge, Xianlong] Chongqing Jiaotong Univ, Sch Econ & Management, Chongqing 40074, Peoples R China.
[Ma, Yanfang] Hebei Univ Technol, Sch Econ & Management, Tianjin 300130, Peoples R China.
[Xu, Manjing] Zhongyuan Univ Technol, Coll Informat & Business, Zhengzhou 450007, Henan, Peoples R China.
通讯作者地址: Yan, F (通讯作者),Chongqing Jiaotong Univ, Sch Econ & Management, Chongqing 40074, Peoples R China.
电子邮件地址: yanfang@cqjtu.edu.cn
出版商: HINDAWI LTD
出版商地址: ADAM HOUSE, 3RD FLR, 1 FITZROY SQ, LONDON, W1T 5HF, ENGLAND
Web of Science 类别: Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications
研究方向: Engineering; Mathematics
IDS 号: FU0WK
ISSN: 1024-123X
eISSN: 1563-5147
29 字符的来源出版物名称缩写: MATH PROBL ENG
ISO 来源出版物缩写: Math. Probl. Eng.
来源出版物页码计数: 17
基金资助致谢:
基金资助机构 授权号
Key Program of NSFC
71401020
71640013
71502021
This research was supported by the Key Program of NSFC (Grant nos. 71401020, 71640013, and 71502021).
开放获取: gold
输出日期: 2018-03-05
第 22 条，共 25 条
标题: A Hybrid Density Functional Study on PuN
作者: Yang, R (Yang, Rong); Tang, B (Tang, Bin); Gao, T (Gao, Tao)
来源出版物: ACTA PHYSICA POLONICA A 卷: 133 期: 1 页: 32-38 DOI: 10.12693/APhysPolA.133.32 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 1
使用次数 (2013 年至今): 1
引用的参考文献数: 31
摘要: The structural, magnetic, electronic, dynamical and thermodynamic properties of PuN have been studied within the frameworks of the density-functional theory, DFT+U and hybrid DFT. The calculations have been performed using the full-potential-linearized augmented plane-wave method. The ferromagnetic and antiferromagnetic configurations are considered in this work. The lattice constants, bulk moduli, densities of states, and thermodynamic data have been computed and compared to available experimental data and other theoretical calculations published in the literature. Total energy results obtained with DFT+U and hybrid DFT indicate that the ground state of PuN is antiferromagnetic, in agreement with experiment. The chemical bonds between Pu and N have a mixture of covalent and ionic components, but the ionic character is stronger than covalent character. The phonon dispersion curves and the optical-mode frequencies are also reported. At last, the effect of spin-orbit coupling on the structural, magnetic, and electronic properties of PuN has been discussed.
入藏号: WOS:000423715300008
语种: English
文献类型: Article
作者关键词: plutonium mononitride; density-functional theory; hybrid functional
KeyWords Plus: PLUTONIUM NITRIDE; PARAMETERS
地址: [Yang, Rong] Chongqing Jiaotong Univ, Coll Mat Sci & Engn, Chongqing 400074, Peoples R China.
[Tang, Bin] Chongqing City Management Coll, Sch Business Adm, Chongqing 401331, Peoples R China.
[Gao, Tao] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China.
通讯作者地址: Tang, B (通讯作者),Chongqing City Management Coll, Sch Business Adm, Chongqing 401331, Peoples R China.
电子邮件地址: tangbinre@126.com
出版商: POLISH ACAD SCIENCES INST PHYSICS
出版商地址: AL LOTNIKOW 32-46, PL-02-668 WARSAW, POLAND
Web of Science 类别: Physics, Multidisciplinary
研究方向: Physics
IDS 号: FU2YF
ISSN: 0587-4246
eISSN: 1898-794X
29 字符的来源出版物名称缩写: ACTA PHYS POL A
ISO 来源出版物缩写: Acta Phys. Pol. A
来源出版物页码计数: 7
输出日期: 2018-03-05
第 23 条，共 25 条
标题: Dynamic process of the thermal regime of a permafrost tunnel on Tibetan Plateau
作者: Yu, WB (Yu, Wenbing); Lu, Y (Lu, Yan); Han, FL (Han, Fenglei); Liu, YZ (Liu, Yongzhi); Zhang, XF (Zhang, Xuefu)
来源出版物: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 卷: 71 页: 159-165 DOI: 10.1016/j.tust.2017.08.021 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 6
使用次数 (2013 年至今): 6
引用的参考文献数: 24
摘要: The thermal status of the rock surrounding tunnel will change during construction and operation periods in cold regions, thereby affecting the stability of tunnel. Field observations of thermal regime of a permafrost tunnel were conducted on Tibetan Plateau. The results show that during the past 12 years, the surrounding rock experienced a warming that subsequently returned to the natural thermal regime, and that was followed by a cooling process. The thermal disturbance distance of the surrounding rock was approximately 30.5 m after the construction. Compared with the air temperature outside the tunnel, heat source of the construction has a great influence on the temperature of the permafrost surrounding the tunnel. The temperature of the permafrost is sinusoidally varying, which achieves a steady state after twelve freeze-thaw cycles. The mean annual ground temperature of the permafrost, and the maximum and minimum temperature amplitudes decreased with time. The heat convection between the air in the tunnel and the surrounding rock during the operation of trains needs to be considered for the design of the permafrost tunnel that could gradually reduce the temperature of the permafrost. The permafrost tunnel could occur to freeze-thaw damage for the sections that lack laid insulation material.
入藏号: WOS:000418212600014
语种: English
文献类型: Article
作者关键词: Tunnel; Cold regions; Thermal regime; Field observation
KeyWords Plus: ANALYTICAL ELASTOPLASTIC SOLUTION; 3-DIMENSIONAL NONLINEAR-ANALYSIS; SURROUNDING ROCK; COUPLED PROBLEM; COLD REGIONS; INSULATION LAYER; HEAT-TRANSFER; TEMPERATURE; STRESS; FIELDS
地址: [Yu, Wenbing; Lu, Yan; Han, Fenglei; Liu, Yongzhi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China.
[Yu, Wenbing; Han, Fenglei; Zhang, Xuefu] Chongqing Jiaotong Univ, Coll Civil Engn, Chongqing 400074, Peoples R China.
[Lu, Yan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
通讯作者地址: Han, FL (通讯作者),Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China.
电子邮件地址: 718859612@qq.com
出版商: PERGAMON-ELSEVIER SCIENCE LTD
出版商地址: THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Web of Science 类别: Construction & Building Technology; Engineering, Civil
研究方向: Construction & Building Technology; Engineering
IDS 号: FQ2UD
ISSN: 0886-7798
29 字符的来源出版物名称缩写: TUNN UNDERGR SP TECH
ISO 来源出版物缩写: Tunn. Undergr. Space Technol.
来源出版物页码计数: 7
基金资助致谢:
基金资助机构 授权号
National Natural Science Fund
41571070
SKLFS
52Y652H21
National Key Basic Research and Development Program
2012CB026102
Key Research Program of Frontier Sciences of CAS
QYZDY-SSW-DQC015
QYZDY-SSW-DQC011
HHS-TSS-STS-1502
This study was supported by the National Natural Science Fund (41571070), the Fund of SKLFS (52Y652H21), the Fund of the National Key Basic Research and Development Program (2012CB026102), the Funds of Key Research Program of Frontier Sciences of CAS (QYZDY-SSW-DQC015, QYZDY-SSW-DQC011,) and fund HHS-TSS-STS-1502.
输出日期: 2018-03-05
第 24 条，共 25 条
标题: Influence of diversion channel section type on landslide dam draining effect
作者: Zhao, TL (Zhao, Tianlong); Chen, SS (Chen, Shengshui); Fu, CJ (Fu, Changjing); Zhong, QM (Zhong, Qiming)
来源出版物: ENVIRONMENTAL EARTH SCIENCES 卷: 77 期: 2 文献号: 54 DOI: 10.1007/s12665-017-7217-1 出版年: JAN 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 30
摘要: The present study focuses on the emergency response measures for landslide dams. This work presents a series of centrifuge model tests conducted on the draining processes of barrier dams that are based on the grain composition of the Tangjiashan landslide dam. The effects of diversion channels with trapezoid, triangular, and compound sections on the discharge, process, and size of the residual dam are discussed. The characteristics of the flow erosion during the process of discharge in the different channels are analyzed based on hydrodynamics. The results suggest that a diversion channel with a compound section has a higher initial discharge efficiency and lower peak flow, and the flow process curve corresponds to a "chunkytype." The draining from this type of a diversion channel could clearly reduce the flood pressure of the river downstream and make the entire process smoother. Thus, the excavation of a diversion channel with a compound section is an efficient and safe method for landslide dam emergency mitigation.
入藏号: WOS:000424370000017
语种: English
文献类型: Article
作者关键词: Landslide dam; Centrifugal tests; Diversion channel; Section form; Emergency measure
KeyWords Plus: TANGJIASHAN BARRIER LAKE; WENCHUAN EARTHQUAKE; FAILURE; FLOOD; BREAK; CHINA
地址: [Zhao, Tianlong; Fu, Changjing] Chongqing Jiaotong Univ, Minist Educ, Key Lab Hydraul & Waterway Engn, Chongqing 400074, Peoples R China.
[Chen, Shengshui] Minist Water Resources, Nanjing Hydraul Res Inst, Key Lab Failure Mech & Safety Control Tech Earth, Nanjing 210029, Jiangsu, Peoples R China.
[Zhong, Qiming] Nanjing Hydraul Res Inst, Dept Geotech Engn, Nanjing 210029, Jiangsu, Peoples R China.
通讯作者地址: Fu, CJ (通讯作者),Chongqing Jiaotong Univ, Minist Educ, Key Lab Hydraul & Waterway Engn, Chongqing 400074, Peoples R China.
电子邮件地址: 546684412@qq.com
出版商: SPRINGER
出版商地址: 233 SPRING ST, NEW YORK, NY 10013 USA
Web of Science 类别: Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
研究方向: Environmental Sciences & Ecology; Geology; Water Resources
IDS 号: FV2BW
ISSN: 1866-6280
eISSN: 1866-6299
29 字符的来源出版物名称缩写: ENVIRON EARTH SCI
ISO 来源出版物缩写: Environ. Earth Sci.
来源出版物页码计数: 9
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
51709025
special funding for post doctoral research projects of Chongqing
Xm2017092
National Engineering Research Center for Inland Waterway Regulation
Key Laboratory for Hydraulic and Waterway Engineering of Ministry of Education Open Foundation
SLK2015B09
National Science and Technology Support Program of China
2015BAK09B01
basic science and advanced technology research projects of Chongqing
cstc2016jcyjA0551
science and technology project of Chongqing Municipal Education Commission
KJ1600516
The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China under Grant No. 51709025, the special funding for post doctoral research projects of Chongqing under Grant No. Xm2017092, the National Engineering Research Center for Inland Waterway Regulation and Key Laboratory for Hydraulic and Waterway Engineering of Ministry of Education Open Foundation under Grant No. SLK2015B09, the National Science and Technology Support Program of China under Grant No. 2015BAK09B01, the basic science and advanced technology research projects of Chongqing under Grant No. cstc2016jcyjA0551, and the science and technology project of Chongqing Municipal Education Commission under Grant No. KJ1600516, respectively.
输出日期: 2018-03-05
第 25 条，共 25 条
标题: Simultaneous Estimation of Low- and High-Order Functional Connectivity for Identifying Mild Cognitive Impairment
作者: Zhou, YY (Zhou, Yueying); Qiao, LS (Qiao, Lishan); Li, WK (Li, Weikai); Zhang, LM (Zhang, Limei); Shen, DG (Shen, Dinggang)
来源出版物: FRONTIERS IN NEUROINFORMATICS 卷: 12 文献号: 3 DOI: 10.3389/fninf.2018.00003 出版年: FEB 6 2018
Web of Science 核心合集中的 "被引频次": 0
被引频次合计: 0
使用次数 (最近 180 天): 0
使用次数 (2013 年至今): 0
引用的参考文献数: 37
摘要: Functional connectivity (FC) network has been becoming an increasingly useful tool for understanding the cerebral working mechanism and mining sensitive biomarkers for neural/mental disease diagnosis. Currently, Pearson's Correlation (PC) is the simplest and most commonly used scheme in FC estimation. Despite its empirical effectiveness, PC only encodes the low-order (i.e., second-order) statistics by calculating the pairwise correlations between network nodes (brain regions), which fails to capture the high-order information involved in FC (e.g., the correlations among different edges in a network). To address this issue, we propose a novel FC estimation method based on Matrix Variate Normal Distribution (MVND), which can capture both low- and high-order correlations simultaneously with a clear mathematical interpretability. Specifically, we first generate a set of BOLD subseries by the sliding window scheme, and for each subseries we construct a temporal FC network by PC. Then, we employ the constructed FC networks as samples to estimate the final low- and high-order FC networks by maximizing the likelihood of MVND. To illustrate the effectiveness of the proposed method, we conduct experiments to identify subjects with Mild Cognitive Impairment (MCI) from Normal Controls (NCs). Experimental results show that the fusion of low- and high-order FCs can generally help to improve the final classification performance, even though the high-order FC may contain less discriminative information than its low-order counterpart. Importantly, the proposed method for simultaneous estimation of low- and high-order FCs can achieve better classification performance than the two baseline methods, i.e., the original PC method and a recent high-order FC estimation method.
入藏号: WOS:000424255300001
PubMed ID: 29467643
语种: English
文献类型: Article
作者关键词: functional connectivity; high-order network; matrix variate normal distribution; mild cognitive impairment; disease diagnosis
KeyWords Plus: RESTING-STATE FMRI; MCI CLASSIFICATION; NETWORK CONNECTIVITY; ALZHEIMERS-DISEASE; BRAIN; SCHIZOPHRENIA; DISORDERS
地址: [Zhou, Yueying; Qiao, Lishan; Li, Weikai; Zhang, Limei] Liaocheng Univ, Sch Math, Liaocheng, Peoples R China.
[Li, Weikai] Chongqing Jiaotong Univ, Coll Informat Sci & Engn, Chongqing, Peoples R China.
[Shen, Dinggang] Univ N Carolina, Dept Radiol, Chapel Hill, NC 27599 USA.
[Shen, Dinggang] Univ N Carolina, BRIC, Chapel Hill, NC 27599 USA.
[Shen, Dinggang] Korea Univ, Dept Brain & Cognit Engn, Seoul, South Korea.
通讯作者地址: Qiao, LS (通讯作者),Liaocheng Univ, Sch Math, Liaocheng, Peoples R China.
Shen, DG (通讯作者),Univ N Carolina, Dept Radiol, Chapel Hill, NC 27599 USA.
Shen, DG (通讯作者),Univ N Carolina, BRIC, Chapel Hill, NC 27599 USA.
Shen, DG (通讯作者),Korea Univ, Dept Brain & Cognit Engn, Seoul, South Korea.
电子邮件地址: qiaolishan@lcu.edu.cn; dgshen@med.unc.edu
出版商: FRONTIERS MEDIA SA
出版商地址: PO BOX 110, EPFL INNOVATION PARK, BUILDING I, LAUSANNE, 1015, SWITZERLAND
Web of Science 类别: Mathematical & Computational Biology; Neurosciences
研究方向: Mathematical & Computational Biology; Neurosciences & Neurology
IDS 号: FV0OE
ISSN: 1662-5196
29 字符的来源出版物名称缩写: FRONT NEUROINFORM
ISO 来源出版物缩写: Front. Neuroinformatics
来源出版物页码计数: 8
基金资助致谢:
基金资助机构 授权号
National Natural Science Foundation of China
61300154
61402215
Chongqing Graduate Student Research Innovation Project
CYS16183
NIH grants
EB022880
AG041721
AG049371
AG042599
This work is partly supported by National Natural Science Foundation of China (61300154, 61402215), Chongqing Graduate Student Research Innovation Project (CYS16183), and NIH grants (EB022880, AG041721, AG049371, and AG042599).
开放获取: gold
输出日期: 2018-03-05
二、EI 37条
1. Heat insulating, fire retardant and flexible inorganic nanocomposite paper
Accession number: 20180804825216
Authors: Chen, Fa (1, 2); Zhang, Jixiang (1); Li, Nian (2); Zhang, Cheng (2); Ji, Bo (1, 2); Hu, Lihe (1, 2); Zhao, Tingting (2); Wang, Zhenyang (2); Zhang, Shudong (2)
Author affiliation: (1) School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei; Anhui; 230031, China
Corresponding author: Zhang, Jixiang(990020607086@cqjtu.edu.cn)
Source title: Materials and Design
Abbreviated source title: Mater. Des.
Volume: 144
Issue date: April 15, 2018
Publication year: 2018
Pages: 281-289
Language: English
ISSN: 02641275
E-ISSN: 18734197
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: Organic heat insulating materials with low density and low thermal conductivity have been widely used in building and domestic appliances. However, their highly flammable and poorly flexible characteristics hamper the application under certain circumstances. In this work, novel nanocomposite paper with low thermal conductivity, flame retardancy and good mechanical property was prepared by employing ultralong hydroxyapatite (HAP) nanowires as scaffolds for silica aerogels. The conductivity of the HAP/silica aerogel nanocomposite paper at room temperature decreased from 0.056 to 0.045 W m?1K?1as the amounts of silica aerogels increased from 0 to 50 wt%, indicating the excellent heat insulating performance. Meanwhile, the prepared paper showed remarkable flame retardancy with the peak heat release rate (HRR) of only 33.1 W/g when silica aerogel content was 50 wt%. Thermal stability analysis showed that the weight losses of all the nanocomposite papers with different contents of silica aerogels were ? 2018
Number of references: 46
Main heading: Paper
Controlled terms: Aerogels - Domestic appliances - Fire protection - Fires - Hydroxyapatite - Insulating materials - Insulation - Mechanical properties - Nanocomposites - Scaffolds - Silica - Silica gel - Thermal conductivity - Thermal insulating materials - Thermal insulation - Thermodynamic stability
Uncontrolled terms: Aerogel nanocomposites - Fire retardancy - Flexible characteristics - Hydroxyapatite (HAp) - Insulating performance - Low thermal conductivity - Peak heat release rates - Silica aerogels
Classification code: 405.1 Construction Equipment
Construction Equipment
- 413 Insulating Materials
Insulating Materials
- 413.2 Heat Insulating Materials
Heat Insulating Materials
- 641.1 Thermodynamics
Thermodynamics
- 761 Nanotechnology
Nanotechnology
- 801.3 Colloid Chemistry
Colloid Chemistry
- 804 Chemical Products Generally
Chemical Products Generally
- 804.2 Inorganic Compounds
Inorganic Compounds
- 811.1 Pulp and Paper
Pulp and Paper
- 914.2 Fires and Fire Protection
Fires and Fire Protection
- 933 Solid State Physics
Solid State Physics
- 951 Materials Science
Materials Science
Numerical data indexing: Temperature 1.07e+03K
DOI: 10.1016/j.matdes.2018.02.039
Funding Details: Number; Sponsor: 1708085MB35; Natural Science Foundation of Anhui Province - Number; Sponsor: 2017M622032; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 21703255; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51202253; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61605222; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: U1432132; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
2. Study on Excitation-triggered Damage Mechanism in Perilous Rock
Accession number: 20180504684569
Authors: Chen, Hongkai (1); Wang, Shengjuan (1)
Author affiliation: (1) Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Chen, Hongkai(chkcxf@163.com)
Source title: IOP Conference Series: Materials Science and Engineering
Abbreviated source title: IOP Conf. Ser. Mater. Sci. Eng.
Volume: 275
Part number: 1 of 1
Issue: 1
Issue title: 5th Annual International Conference on Material Science and Engineering, ICMSE 2017
Issue date: January 5, 2018
Publication year: 2018
Article number: 012025
Language: English
ISSN: 17578981
E-ISSN: 1757899X
Document type: Conference article (CA)
Conference name: 5th Annual International Conference on Material Science and Engineering, ICMSE 2017
Conference date: October 20, 2017 - October 22, 2017
Conference location: Xiamen, Fujian, China
Conference code: 133423
Publisher: Institute of Physics Publishing
Abstract: Chain collapse is easy to happen for perilous rock aggregate locating on steep high slope, and one of the key scientific problems is the damage mechanism of perilous rock under excitation action at perilous rock rupture. This paper studies excitation-triggered damage mechanism in perilous rock by wave mechanics, which gives three conclusions. Firstly, when only the normal incidence attenuation spread of excitation wave is considered, while the energy loss is ignored for excitation wave to spread in perilous rock aggregate, the paper establishes one method to calculate peak velocity when excitation wave passes through boundary between any two perilous rock blocks in perilous rock aggregate. Secondly, following by Sweden and Canmet criteria, the paper provides one wave velocity criterion for excitation-triggered damage in the aggregate. Thirdly, assuming double parameters of volume strain of cracks or fissures in rock meet the Weibull distribution, one method to estimate micro-fissure in excitation-triggered damage zone in perilous rock aggregate is established. The studies solve the mechanical description problem for excitation-triggered damage in perilous rock, which is valuable in studies on profoundly rupture mechanism. ? Published under licence by IOP Publishing Ltd.
Number of references: 8
Main heading: Rocks
Controlled terms: Aggregates - Electrodynamics - Energy dissipation - Failure (mechanical) - Wave propagation - Weibull distribution
Uncontrolled terms: Damage mechanism - Excitation waves - Normal incidence - Peak velocities - Rock aggregates - Rupture mechanism - Wave mechanics - Wave velocity
Classification code: 406 Highway Engineering
Highway Engineering
- 525.4 Energy Losses (industrial and residential)
Energy Losses (industrial and residential)
- 701 Electricity and Magnetism
Electricity and Magnetism
- 922.2 Mathematical Statistics
Mathematical Statistics
DOI: 10.1088/1757-899X/275/1/012025
Funding Details: Number; Acronym; Sponsor: 51378521; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51678097; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: CXTDG201602012; CQU; Chongqing University
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
3. Numerical simulation on the performance of thermosyphon adopted to mitigate thaw settlement of embankment in sandy permafrost zone
Accession number: 20174104254996
Authors: Chen, Lin (1, 3); Yu, Wenbing (1, 2); Lu, Yan (1); Liu, Weibo (1)
Author affiliation: (1) State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-environment and Resources, CAS, Lanzhou; 730000, China; (2) College of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (3) Cold Regions Geomorphology and Geotechnical Laboratory, Department of Geography, Université de Montréal, Montréal, H2V 2B8, Canada
Corresponding author: Yu, Wenbing(99155644@qq.com)
Source title: Applied Thermal Engineering
Abbreviated source title: Appl Therm Eng
Volume: 128
Issue date: 2018
Publication year: 2018
Pages: 1624-1633
Language: English
ISSN: 13594311
CODEN: ATENFT
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: Desertification and climate warming have affected the stability of the crushed-rock interlayer embankment of the Qinghai-Tibet Railway (QTR) in the permafrost zone. The two-phase closed thermosyphon (TPCT) is adopted to mitigate the problem in sandy permafrost zone. A composite heat transfer model, including air convection in the crushed-rock interlayer, the air-TPCT-soil coupled heat transfer for TPCTs system and the heat conduction with phase change in the soil layers, is developed based on the equivalent thermal resistance for the TPCT. And an increase in average air temperature by 0.04 °C a?1was also simulated. The numerical results indicate that TPCTs play rapidly a cooling effect and approach a thermal balance state after 10 years of construction. TPCTs installed at the embankment slope effectively ease the underlying permafrost degeneration and cool down permafrost. However, the cooling scope and magnitude of TPCTs largely depends on working duration after installation. If the mean average air temperature is still lower than ?3.5 °C after considering climate warming, TPCTs installed at the 10thyear of QTR operation can mitigate the negative effect of climate warming and sand accumulation in the sandy permafrost zone of the Qinghai-Tibet Corridor. ? 2017
Number of references: 44
Main heading: Heat transfer
Controlled terms: Atmospheric temperature - Capillary flow - Embankments - Heat conduction - Heat resistance - Permafrost - Railroads - Siphons - Soils - Thermosyphons
Uncontrolled terms: Aeolian sand - Climate warming - Crushed-rock layers - Permafrost degradation - Qinghai Tibet railway - Thermosyphon
Classification code: 405 Construction Equipment and Methods; Surveying
Construction Equipment and Methods; Surveying
- 443.1 Atmospheric Properties
Atmospheric Properties
- 483 Soil Mechanics and Foundations
Soil Mechanics and Foundations
- 483.1 Soils and Soil Mechanics
Soils and Soil Mechanics
- 616.1 Heat Exchange Equipment and Components
Heat Exchange Equipment and Components
- 619.1 Pipe, Piping and Pipelines
Pipe, Piping and Pipelines
- 631.1 Fluid Flow, General
Fluid Flow, General
- 641.2 Heat Transfer
Heat Transfer
Numerical data indexing: Age 1.00e+01yr
DOI: 10.1016/j.applthermaleng.2017.09.130
Funding Details: Number; Acronym; Sponsor: 41571070; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
4. Size Effect Studies on Tensile Tests for Hot Stamping Steel
Accession number: 20180404676464
Authors: Chen, Xiaodu (1); Li, Yuanyuan (1); Han, Xianhong (1); Zhang, Junbo (2)
Author affiliation: (1) Department of Plasticity Technology, Shanghai Jiao Tong University, Shanghai; 200030, China; (2) College of Civil Engineering, Chongqing Jiao Tong University, Chongqing; 400074, China
Corresponding author: Han, Xianhong(hanxh@sjtu.edu.cn)
Source title: Journal of Materials Engineering and Performance
Abbreviated source title: J Mater Eng Perform
Issue date: January 18, 2018
Publication year: 2018
Pages: 1-8
Language: English
ISSN: 10599495
E-ISSN: 15441024
CODEN: JMEPEG
Document type: Article in Press
Publisher: Springer New York LLC
Abstract: Tensile tests have been widely used to determine basic mechanical properties of materials. However, the properties measured may be related to geometrical factors of the tested samples especially for high-strength steels; this makes the properties’ definitions and comparisons difficult. In this study, a series of tensile tests of ultra-high-strength hot-stamped steel were performed; the geometric shapes and sizes as well as the cutting direction were modified. The results demonstrate that the hot-stamped parts were isotropic and the cutting direction had no effect; the measured strengths were practically unrelated to the specimen geometries, including both size and shape. The elongations were slightly related to sample sizes within the studied range but highly depended on the sample shape, represented by the coefficient K. Such phenomena were analyzed and discussed based on microstructural observations and fracture morphologies. Moreover, two widely used elongation conversion equations, the Oliver formula and Barba’s law, were introduced to verify their applicability, and a new interpolating function was developed and compared. ? 2018 ASM International
Main heading: High strength steel
Controlled terms: Elongation - Forging machines - Geometry - Stamping - Tensile testing
Uncontrolled terms: Fracture morphology - Geometrical factors - Hot-stamping - Interpolating functions - Mechanical properties of materials - Micro-structural observations - Sample geometry - Ultra high strengths
Classification code: 535.2 Metal Forming
Metal Forming
- 535.2.1 Metal Forming Machines
Metal Forming Machines
- 545.3 Steel
Steel
- 921 Mathematics
Mathematics
DOI: 10.1007/s11665-018-3135-y
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
5. Mechanical behavior of multilayer GO carbon-fiber cement composites
Accession number: 20174504368913
Authors: Chen, Zeng-shun (1, 2); Zhou, Xiao (1); Wang, Xu (1, 3); Guo, Peng (1)
Author affiliation: (1) The National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong; (3) Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, Urbana; IL; 61801, United States
Corresponding author: Wang, Xu(xuwang@cqjtu.edu.cn)
Source title: Construction and Building Materials
Abbreviated source title: Constr Build Mater
Volume: 159
Issue date: January 20, 2018
Publication year: 2018
Pages: 205-212
Language: English
ISSN: 09500618
CODEN: CBUMEZ
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: Graphene oxide (GO) has attracted much attention due to its dispersibility in water, high aspect ratio and excellent mechanical properties. In this study, the mechanical behaviors of multilayer GO carbon-fiber cement composites were experimentally investigated. The experiments of compressive strength and the flexural tensile strength of the composites were performed. For the purpose comparison and explanation, the mechanical properties of GO cement and carbon-fiber cement were also investigated. The results show that the compressive strength of the GO carbon-fiber cement composite with adding 0.06% GO and 1% carbon-fiber was increased by 23.89%, whereas the increment of the flexural tensile strength of the composite was increased by 138.44%. The results were explained with respect to the mechanical behavior of GO cement specimens with incorporating different percentages of GO, and the microstructures of the composites observed by Scanning Electron Microscopy (SEM). The present study not only advanced our understanding of mechanical behaviors of multilayer carbon-fiber cements, but the results can be utilized for civil and transportation structures to improve the performance of the structures. ? 2017 Elsevier Ltd
Number of references: 28
Main heading: Cement manufacture
Controlled terms: Aspect ratio - Carbon fibers - Cements - Composite materials - Compressive strength - Fibers - Graphene - Mechanical properties - Multilayers - Scanning electron microscopy - Tensile strength
Uncontrolled terms: Dispersibilities - Fiber cements - Graphene oxides - High aspect ratio - Mechanical behavior - Transportation structures
Classification code: 412.1 Cement
Cement
- 804 Chemical Products Generally
Chemical Products Generally
- 951 Materials Science
Materials Science
Numerical data indexing: Percentage 1.00e+00%, Percentage 1.38e+02%, Percentage 2.39e+01%
DOI: 10.1016/j.conbuildmat.2017.10.094
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
6. Developing an evacuation evaluation model for offshore oil and gas platforms using BIM and agent-based model
Accession number: 20180704781944
Authors: Cheng, Jack C.P. (1); Tan, Yi (1); Song, Yongze (2); Mei, Zhongya (3); Gan, Vincent J.L. (1); Wang, Xiangyu (2)
Author affiliation: (1) Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong; (2) Australian Joint Research Centre for Building Information Modeling, School of Built Environment, Curtin University, Australia; (3) School of Economics and Management, Chongqing Jiaotong University, China
Corresponding author: Tan, Yi(ytanai@connect.ust.hk)
Source title: Automation in Construction
Abbreviated source title: Autom Constr
Volume: 89
Issue date: May 2018
Publication year: 2018
Pages: 214-224
Language: English
ISSN: 09265805
CODEN: AUCOES
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: Accidents on offshore oil and gas platforms (OOGPs) usually cause serious fatalities and financial losses considering the demanding environment where such platforms are located and the complicated topsides structure that the platforms have. Conducting evacuation planning on OOGPs is challenging. Computational tools are considered as a good way to plan evacuation by emergency simulation. However, the complex structure of OOGPs and various evacuation behaviors can weaken the advantages of computational simulation. Therefore, this study develops a simulation model for OOGPs to evaluate different evacuation plans to improve evacuation performance by integrating building information modeling (BIM) technology and agent-based model (ABM). The developed model consists of four parts: evacuation model input, simulation environment modeling, agent definition, and simulation and comparison. Necessary platform information is extracted from BIM and then used to model the simulation environment by integrating matrix model and network model. In addition to essential attributes, environment sensing and dynamic escape path planning functions are developed and assigned to agents in order to improve simulation performance. Total evacuation time for all agents on an offshore platform is used to evaluate the evacuation performance of each simulation. An example OOGP BIM topsides with different emergency scenarios is used to illustrate the developed evacuation evaluation model. The results show that the developed model can accurately simulate evacuation and improve evacuation performance on OOGPs. The developed model is also applicable to other industries such as the architecture, engineering, and construction industry, where there is an increasing demand for evacuation planning and simulation. ? 2018
Number of references: 61
Main heading: Architectural design
Controlled terms: Autonomous agents - Computational methods - Construction industry - Drilling platforms - Losses - Motion planning - Offshore structures - Software agents
Uncontrolled terms: Agent-based model - Architecture , engineering , and constructions - Building Information Model - BIM - Computational simulation - Evacuation evaluation - Off shore platforms - Offshore oil and gas platforms - Simulation
Classification code: 402 Buildings and Towers
Buildings and Towers
- 405 Construction Equipment and Methods; Surveying
Construction Equipment and Methods; Surveying
- 674.2 Marine Drilling Rigs and Platforms
Marine Drilling Rigs and Platforms
- 911.2 Industrial Economics
Industrial Economics
DOI: 10.1016/j.autcon.2018.02.011
Funding Details: Number; Acronym; Sponsor: DP170104613; ARC; Australian Research Council
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
7. Investigation on solubility of hydroxy dibasic acids in alkanolamine solutions
Accession number: 20180404671816
Authors: Du, M. (1)
Author affiliation: (1) School of Shipping and Naval Architecture, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Du, M.(dm-god@126.com)
Source title: IOP Conference Series: Materials Science and Engineering
Abbreviated source title: IOP Conf. Ser. Mater. Sci. Eng.
Volume: 283
Part number: 1 of 1
Issue: 1
Issue title: 6th Global Conference on Materials Science and Engineering
Issue date: January 2, 2018
Publication year: 2018
Article number: 012023
Language: English
ISSN: 17578981
E-ISSN: 1757899X
Document type: Conference article (CA)
Conference name: 6th Global Conference on Materials Science and Engineering, CMSE 2017
Conference date: October 24, 2017 - October 27, 2017
Conference location: Beijing, China
Conference code: 133344
Publisher: Institute of Physics Publishing
Abstract: Solubilities of three hydroxy dibasic (adipic, suberic, and sebacic) acids in alkanolamine solutions were measured within the 30-90 temperature range. It is found that solubility of these acids sharply grows with temperature and concentration of alkanolamine solvent. In addition, the study substantiates the adjustment of pH to optimize the CO2absorption and desorption processes. The precipitation of added acids from alkanolamine solvents by cooling is found to be quite problematic, which makes the recovery of residual acids from lean alkanolamine solvents non-feasible and requires the application of alternative methods. ? Published under licence by IOP Publishing Ltd.
Number of references: 9
Main heading: Alkanolamines
Controlled terms: Solubility - Solvents
Uncontrolled terms: CO2 absorption - Dibasic acids - Temperature range
Classification code: 801.4 Physical Chemistry
Physical Chemistry
- 803 Chemical Agents and Basic Industrial Chemicals
Chemical Agents and Basic Industrial Chemicals
- 804.1 Organic Compounds
Organic Compounds
DOI: 10.1088/1757-899X/283/1/012023
Funding Details: Acronym; Sponsor: CQU; Chongqing University
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
8. Achieving high strength and good ductility in as-extruded Mg-Gd-Y-Zn alloys by Ce micro-alloying
Accession number: 20180304650626
Authors: Gao, Zhengyuan (1); Hu, Linsheng (1); Li, Jinfeng (1); An, Zhiguo (1); Li, Jun (1); Huang, Qiuyan (2)
Author affiliation: (1) School of Mechatronics and Automotive Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Institute of Metal Research, Chinese Academy of Sciences, Shenyang; 110016, China
Corresponding author: Gao, Zhengyuan(zhengyuangao@cqjtu.edu.cn)
Source title: Materials
Abbreviated source title: Mater.
Volume: 11
Issue: 1
Issue date: January 10, 2018
Publication year: 2018
Article number: 102
Language: English
E-ISSN: 19961944
Document type: Journal article (JA)
Publisher: MDPI AG, Postfach, Basel, CH-4005, Switzerland
Abstract: In this study, the effect of Ce additions on microstructure evolution of Mg-7Gd-3.5Y-0.3Zn (wt %) alloys during the casting, homogenization, aging and extrusion processing are investigated, and novel mechanical properties are also obtained. The results show that Ce addition promotes the formation of long period stacking ordered (LPSO) phases in the as-cast Mg-Gd-Y-Zn-Ce alloys. A high content of Ce addition would reduce the maximum solubility of Gd and Y in the Mg matrix, which leads to the higher density of Mg12Ce phases in the as-homogenized alloys. The major second phases observed in the as-extruded alloys are micron-sized bulk LPSO phases, nano-sized stripe LPSO phases, and broken Mg12Ce and Mg5RE phases. Recrystallized grain size of the as-extruded 0.2Ce, 0.5Ce and 1.0Ce alloys can be refined to ~4.3 μm, ~1.0 μm and ~8.4 μm, respectively, which is caused by the synthesized effect of both micron phases and nano phases. The strength and ductility of as-extruded samples firstly increase and then decrease with increasing Ce content. As-extruded 0.5Ce alloy exhibits optimal mechanical properties, with ultimate strength of 365 MPa and ductility of ~15% simultaneously. ? 2018 by the authors.
Number of references: 25
Main heading: Magnesium alloys
Controlled terms: Alloying - Binary alloys - Cerium alloys - Ductility - Dynamic recrystallization - Gadolinium alloys - High strength alloys - Magnesium castings - Mechanical properties - Microalloying - Microstructure - Recrystallization (metallurgy) - Yttrium alloys - Zinc - Zinc alloys - Zirconium alloys
Uncontrolled terms: Extrusion processing - High strength - Mg-Gd-Y-Zn alloys - Micro-structure evolutions - Recrystallized grain sizes - Second phases - Strength and ductilities - Ultimate strength
Classification code: 531.1 Metallurgy
Metallurgy
- 534.2 Foundry Practice
Foundry Practice
- 546.3 Zinc and Alloys
Zinc and Alloys
- 547.2 Rare Earth Metals
Rare Earth Metals
- 549.2 Alkaline Earth Metals
Alkaline Earth Metals
- 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
- 951 Materials Science
Materials Science
Numerical data indexing: Pressure 3.65e+08Pa
DOI: 10.3390/ma11010102
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
9. Tolerance Dominance Relation in Incomplete Ordered Decision Systems
Accession number: 20174504371579
Authors: Guan, Lihe (1); Huang, Darong (1); Han, Fengqing (1)
Author affiliation: (1) School of Mathematics and Statistics, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Guan, Lihe(guanlihe@cqjtu.edu.cn)
Source title: International Journal of Intelligent Systems
Abbreviated source title: Int J Intell Syst
Volume: 33
Issue: 1
Issue date: January 2018
Publication year: 2018
Pages: 33-48
Language: English
ISSN: 08848173
E-ISSN: 1098111X
CODEN: IJISED
Document type: Journal article (JA)
Publisher: John Wiley and Sons Ltd, Southern Gate, Chichester, West Sussex, PO19 8SQ, United Kingdom
Abstract: To deal with inconsistencies coming from consideration of criteria, that is, attributes with preference-ordered domains (scales), such as product quality, market share, and debt ratio, the dominance-based rough set approach has been proposed. However, it is not much useful for analyzing incomplete information. In this paper, we attempt to present research focusing on incomplete ordered decision systems where all attributes are considered as criteria and some objects’ criterion values are unknown. Under the assumption that all unknown values are the “do not care” semantics, the concept of tolerance dominance relation is introduced. Then, the rough approximations induced by it are obtained. And their properties are investigated. Especially, the important properties of rough approximations, such as rough inclusion, complementarity, identity, and monotonicity, are preserved well-known in the presented methodology. Moreover, an example is employed to illustrate these results. We expand the potential applications of dominance-based rough set approach. ? 2017 Wiley Periodicals, Inc.
Number of references: 45
Main heading: Rough set theory
Controlled terms: Competition - Semantics
Uncontrolled terms: Dominance relation - Dominance-based rough set approach - Incomplete information - Incomplete ordered decision systems - Ordered domains - Rough approximations - Rough inclusions - Unknown values
DOI: 10.1002/int.21932
Funding Details: Number; Acronym; Sponsor: 61304104; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61573076; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
10. Modeling for Assessment of Long-Term Behavior of Prestressed Concrete Box-Girder Bridges
Accession number: 20180204643593
Authors: Huang, Haidong (1); Huang, Shan-Shan (2); Pilakoutas, Kypros (2)
Author affiliation: (1) Dept. of Bridge Engineering, Chongqing Jiaotong Univ., Chongqing; 400074, China; (2) Dept. of Civil and Structural Engineering, Univ. of Sheffield, Sheffield; S1 3JD, United Kingdom
Corresponding author: Huang, Haidong(huanghaidong@cqjtu.edu.cn)
Source title: Journal of Bridge Engineering
Abbreviated source title: J Bridge Eng
Volume: 23
Issue: 3
Issue date: March 1, 2018
Publication year: 2018
Article number: 04018002
Language: English
ISSN: 10840702
CODEN: JBENF2
Document type: Journal article (JA)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: Large-span prestressed concrete (PC) box-girder bridges suffer excessive vertical deflections and cracking. Recent serviceability failures in China show that the current Chinese standard modeling approach fails to accurately predict long-term deformations of large box-girder bridges. This hinders the efforts of inspectors to conduct satisfactory structural assessments and make decisions on potential repair and strengthening. This study presents a model-updating approach that aims to assess the models used in the current Chinese standard and improve the accuracy of numerical modeling of the long-term behavior of box-girder bridges, calibrated against data obtained from a bridge in service. A three-dimensional finite-element model representing the long-term behavior of box-girder sections is initially established. Parametric studies are then conducted to determine the relevant influencing parameters and to quantify the relationships between those and the behavior of box-girder bridges. Genetic algorithm optimization, based on the response-surface method (RSM), is used to determine realistic creep and shrinkage levels and prestress losses. The modeling results correspond well with the measured historic deflections and the observed cracks. This approach can lead to more accurate bridge assessments, which result in safer strengthening and more economic maintenance plans. ? 2018 American Society of Civil Engineers.
Number of references: 38
Main heading: Box girder bridges
Controlled terms: Bridges - Concrete beams and girders - Concretes - Cracks - Creep - Finite element method - Genetic algorithms - Identification (control systems) - Prestressed concrete - Shrinkage - Steel bridges - Surface properties
Uncontrolled terms: Effective prestress - Genetic-algorithm optimizations - Girder bridges - Influencing parameters - Prestressed concrete box girder - Repair and strengthening - Response surface method - Three dimensional finite element model
Classification code: 401.1 Bridges
Bridges
- 412 Concrete
Concrete
- 731.1 Control Systems
Control Systems
- 921.6 Numerical Methods
Numerical Methods
- 951 Materials Science
Materials Science
DOI: 10.1061/(ASCE)BE.1943-5592.0001210
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
11. Laboratory evaluation of electromagnetic density gauges for hot-mix asphalt mixture density measurement
Accession number: 20174104249437
Authors: Leng, Zhen (1); Zhang, Zeyu (1); Zhang, Yuan (1); Wang, Yangyang (1); Yu, Huayang (1); Ling, Tianqing (2)
Author affiliation: (1) Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; (2) Faculty of Architecture and Urban Planning, Chongqing Jiaotong University, Nan’an, Chongqing, China
Corresponding author: Leng, Zhen(zhen.leng@polyu.edu.hk)
Source title: Construction and Building Materials
Abbreviated source title: Constr Build Mater
Volume: 158
Issue date: January 15, 2018
Publication year: 2018
Pages: 1055-1064
Language: English
ISSN: 09500618
CODEN: CBUMEZ
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: This paper presents a laboratory study aiming to evaluate the performance of electromagnetic (EM) density gauges as a non-destructive tool for hot mix asphalt (HMA) density measurement. In total, 36 HMA testing slabs with different compositions were prepared in laboratory. EM density gauge data were collected from these slabs using two common types of gauges, i.e., PQI 301 and PaveTracker 2701B, and compared with their bulk densities measured by the standard saturated surface dry (SSD) method. It was found that measurement direction, asphalt binder content, mixture air void content, and thickness of the testing slabs do not affect the accuracy of the EM density gauges. However, EM density gauge measurements are affected by the presence of moisture, gradation of asphalt mixture and gauge calibration method. It was also concluded that the accuracy of PaveTracker with mix calibration is comparable to that of the conventional standard method. ? 2017 Elsevier Ltd
Number of references: 26
Main heading: Asphalt mixtures
Controlled terms: Asphalt - Calibration - Density (specific gravity) - Density measurement (specific gravity) - Gages - Mixtures - Thickness measurement
Uncontrolled terms: Calibration method - Evaluation - Gauge measurements - Hot-mix asphalt mixtures - Laboratory evaluation - Laboratory studies - Nondestructive tools - Saturated surface dries
DOI: 10.1016/j.conbuildmat.2017.09.186
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
12. Diffusion model of oxygen in c-axis oriented YBa2Cu3O7-δfilms
Accession number: 20174604389931
Authors: Li, L. (1, 2); Huang, D.M. (1, 2); Wang, N. (1, 2); Sun, Y.H. (1, 2); Zhou, C. (1, 2)
Author affiliation: (1) School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) The National Joint Engineering Laboratories of Traffic Civil Materials, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Li, L.(lili196910@126.com)
Source title: Physica C: Superconductivity and its Applications
Abbreviated source title: Phys C Supercond Appl
Volume: 544
Issue date: January 15, 2018
Publication year: 2018
Pages: 1-5
Language: English
ISSN: 09214534
CODEN: PHYCE6
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: The relationship between microstructure and diffusion of oxygen in YBCO films are studied in this work. The dislocation structure in magnetron sputtered c-axis oriented YBCO films deposited on (100)SrTiO3substrates consists of vertical (//c-axis) screw dislocation forests together with layered horizontal (⊥c-axis) edge dislocation net-works. It is found that in the oxygenation process of YBCO films, oxygen diffusion is greatly enhanced by short circuit paths which we suggest to be the horizontally (⊥c-axis) layered edge dislocation net-works. Base on the structure of c-axis oriented YBCO films, the oxygen diffusion process was examined by applying the cylinder diffusion model. The diffusion coefficient of oxygen and the corresponding activation energy were measured. ? 2017 Elsevier B.V.
Number of references: 18
Main heading: Diffusion
Controlled terms: Activation energy - Barium compounds - Copper compounds - Diffusion in gases - Edge dislocations - Microstructure - Oxygen - Oxygenation - Screw dislocations - Superconducting films - Thin films - Titanium compounds - Yttrium barium copper oxides
Uncontrolled terms: C axis oriented - Diffusion model - Diffusion of oxygens - Dislocation structures - Oxygen diffusion - Short circuit paths - SrTiO3 substrates - YBa2Cu3O7 thin film
Classification code: 708.3 Superconducting Materials
Superconducting Materials
- 804 Chemical Products Generally
Chemical Products Generally
- 804.2 Inorganic Compounds
Inorganic Compounds
- 933.1.1 Crystal Lattice
Crystal Lattice
- 951 Materials Science
Materials Science
DOI: 10.1016/j.physc.2017.10.016
Funding Details: Number; Acronym; Sponsor: cstc2017jcyjAX0157; CSTC; Chongqing Science and Technology Commission - Number; Sponsor: KJ1400309; Chongqing Municipal Education Commission
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
13. Influences of heat input, welding sequence and external restraint on twisting distortion in an asymmetrical curved stiffened panel
Accession number: 20174704440636
Authors: Liang, Wei (1, 2); Deng, Dean (3)
Author affiliation: (1) College of Mechatronics & Automotive Engineering, Chongqing Jiaotong University, No. 66 Xuefu Road, Nan-an; Chongqing; 400074, China; (2) State key laboratory of advanced welding and joining, Harbin Institute of Technology, Harbin; 150001, China; (3) College of materials science and engineering, Chongqing University, No. 174, Shazhengjie, Shapingba; Chongqing; 400045, China
Corresponding author: Deng, Dean(deandeng@cqu.edu.cn)
Source title: Advances in Engineering Software
Abbreviated source title: Adv Eng Software
Volume: 115
Issue date: January 2018
Publication year: 2018
Pages: 439-451
Language: English
ISSN: 09659978
E-ISSN: 18735339
CODEN: AESODT
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: Welding distortion not only degrades the fabrication accuracy of ship hull blocks but also decreases the productivity due to correction works. The accurate prediction of welding-induced distortion will help control the dimension accuracy. In this study, a computational approach based on inherent strain theory and interface element method was employed to efficiently and precisely estimate welding-induced deformation for large welded structures generated during assembly process. In the proposed approach, the local shrinkage due to heat input were considered by inherent strain components. On the other hand, the gap as well misalignment between the two parts to be joined, and the change of stiffness during assembly process were taken into account by interface elements. Meanwhile, the geometrical nonlinearity was included in the developed computational approach. In the current study, the features of welding deformation in an asymmetrical curved stiffened panel were numerically investigated by mean of the new computational approach. In addition, the influences of heat input, welding sequence and external restraint on the twisting distortion of the curved stiffened panel were further studied. ? 2017 Elsevier Ltd
Number of references: 27
Main heading: Welding
Controlled terms: Assembly - Computation theory - Computational methods - Deformation - Electric distortion - Hulls (ship)
Uncontrolled terms: Computational approach - Geometrical non-linearity - Inherent deformation - Interface element method - Interface elements - Stiffened panel - Welding deformations - Welding-induced distortion
DOI: 10.1016/j.advengsoft.2017.11.002
Funding Details: Number; Acronym; Sponsor: 51375518; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
14. Research on the Calculation Method of Internal Force of Combined Energy Dissipation Shed-tunnel Roof
Accession number: 20180504684568
Authors: Liao, Fiao (1); Meng, Deyu (1); Yang, Zhiyong (1); Wang, He (1); Wu, Ranjie (1)
Author affiliation: (1) Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Source title: IOP Conference Series: Materials Science and Engineering
Abbreviated source title: IOP Conf. Ser. Mater. Sci. Eng.
Volume: 275
Part number: 1 of 1
Issue: 1
Issue title: 5th Annual International Conference on Material Science and Engineering, ICMSE 2017
Issue date: January 5, 2018
Publication year: 2018
Article number: 012024
Language: English
ISSN: 17578981
E-ISSN: 1757899X
Document type: Conference article (CA)
Conference name: 5th Annual International Conference on Material Science and Engineering, ICMSE 2017
Conference date: October 20, 2017 - October 22, 2017
Conference location: Xiamen, Fujian, China
Conference code: 133423
Publisher: Institute of Physics Publishing
Abstract: The paper studied on the internal force calculation process of roof of the combined energy dissipation shed-tunnel through using the theory of thin plates, the theory of structural dynamics and coordinated deformation theory, the paper taked the top slab as one-way slab, used the heavy series theory to study the equation, and got the internal force analytical solution under the action of a rockfall impact. The research results can provide reference for shed-tunnel structure design. ? Published under licence by IOP Publishing Ltd.
Number of references: 9
Main heading: Roofs
Controlled terms: Energy dissipation - Rock bursts - Structural dynamics
Uncontrolled terms: Deformation theory - Internal forces - One-way slab - Research results - Rockfall impact - Shed tunnel structures - Thin plate
Classification code: 408 Structural Design
Structural Design
- 502.1 Mine and Quarry Operations
Mine and Quarry Operations
- 525.4 Energy Losses (industrial and residential)
Energy Losses (industrial and residential)
DOI: 10.1088/1757-899X/275/1/012024
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
15. Shear strength between poroelastic road surface and sublayer with different bonding agents
Accession number: 20180304650931
Authors: Liao, Gongyun (1); Wang, Hao (2); Zhu, Hongzhou (3); Sun, Peixiang (1); Chen, Huaqing (1)
Author affiliation: (1) School of Transportation, Southeast Univ., 2 Sipailou, Nanjing; 210096, China; (2) Dept. of Civil and Environmental Engineering, Rutgers, State Univ. of New Jersey, New Brunswick; NJ; 08854, United States; (3) School of Civil Engineering, Chongqing Jiaotong Univ., Chongqing; 400074, China
Corresponding author: Liao, Gongyun(lg@seu.edu.cn)
Source title: Journal of Materials in Civil Engineering
Abbreviated source title: J. Mater. Civ. Eng.
Volume: 30
Issue: 3
Issue date: March 1, 2018
Publication year: 2018
Article number: 04018017
Language: English
ISSN: 08991561
Document type: Journal article (JA)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: Insufficient bonding strength between a poroelastic road surface (PERS) and a sublayer usually induces premature delamination failure. The objective of this paper was to investigate the shear bonding strength of the PERS-sublayer interface with different bonding agents and develop polyurethane-bound grain (PUG) as an alternative bonding agent. The inclined shear test was utilized to measure shear bonding strengths of control (without bonding agents) and interface-treated samples. The effects of polyurethane content within PERS, sublayer type, temperature, and freeze-thaw conditions on PERS-sublayer shear bonding strengths were investigated for control samples. Shear bonding strengths between the PERS and sublayer with a PUG layer were compared to those with epoxy asphalt and polyurethane for interface-treated samples. It was found that shear bonding strengths between PERS and asphalt-bound sublayers substantially decreased, with the increase of temperature or after one freeze-thaw cycle. Shear bonding strengths between PERS and asphalt-bound sublayers were smaller than the ones between PERS and cement-bound sublayers, regardless of polyurethane content, temperature, or freeze-thaw condition. The PUG layer enhanced PERS-sublayer interface bonding and achieved comparative bonding strength to epoxy asphalt, which was greater than the bonding strength brought by pure polyurethane. A PUG layer with 7% polyurethane produced more than 1.5-MPa shear bonding strength at 60°C for the grain size considered in this study. ? 2018 American Society of Civil Engineers.
Number of references: 22
Main heading: Bonding
Controlled terms: Adhesives - Asphalt - Bond strength (chemical) - Diffusion bonding - Epoxy resins - Freezing - Polyurethanes - Roads and streets - Shear flow - Thawing - Transportation
Uncontrolled terms: Bonding strength - Control samples - Delamination failure - Freeze-thaw cycles - Interface bonding strength - Poroelastic road surfaces - Shear tests - Sublayer interfaces
Classification code: 406.2 Roads and Streets
Roads and Streets
- 411.1 Asphalt
Asphalt
- 631.1 Fluid Flow, General
Fluid Flow, General
- 801.4 Physical Chemistry
Physical Chemistry
- 815.1.1 Organic Polymers
Organic Polymers
Numerical data indexing: Percentage 7.00e+00%, Pressure 1.50e+06Pa, Temperature 3.33e+02K
DOI: 10.1061/(ASCE)MT.1943-5533.0002216
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
16. Estimation of the stress level on a cross section of a reinforced concrete beam via Acoustic emission Intensity Distribution (AID) analysis
Accession number: 20180204621118
Authors: Liu, Simeng (1); Ma, Huixiang (2)
Author affiliation: (1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China; (2) Department of Management Engineering, Rongzhi College of Chongqing Technology and Business University, China
Corresponding author: Liu, Simeng(lsm@cqjtu.edu.cn)
Source title: Construction and Building Materials
Abbreviated source title: Constr Build Mater
Volume: 164
Issue date: March 10, 2018
Publication year: 2018
Pages: 463-476
Language: English
ISSN: 09500618
CODEN: CBUMEZ
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: Measuring stress is critical in the Civil Engineering. However, established acoustic emission-based techniques can hardly evaluate the stress level which a structure is experiencing. Accordingly, an idea of ‘listening’ to Acoustic Emission (AE) to evaluate critical stress states in reinforced concrete (RC) beams is investigated here. Previous work found that the stress diagram of an RC beam cross section strongly correlates with the corresponding AE event intensity distribution pattern. Therefore, the stress level of this type of structures was estimated by utilising the remarkable correlation in this study. First of all, the stress diagrams of a cross section of an RC beam loaded to failure were analysed, revealing features which had close relations with the stress level of the section. Thanks to the correlation, these features were also extracted from the corresponding distribution patterns of the AE event intensity and then used to estimate the stress state. As a result, the AE Intensity Distribution (AID) analysis approach was developed. Data from an experiment conducted on six RC beams with a Digital Image Correlation (DIC) system and an AE device were adopted to verify the approach. Results showed that the indicators of the approach strongly correlated with the stress levels of the specimens; that the approach can characterise the stress states precisely, with an error of about five per cent in critical stages. Besides the approach, more profound significance of this work lies in that it demonstrated the great capability of an innovative strategy, namely characterising structural behaviours accurately via correlating an AE distribution pattern with the corresponding stress diagram. ? 2018 Elsevier Ltd
Number of references: 33
Main heading: Acoustic emission testing
Controlled terms: Concrete beams and girders - Concretes - Reinforced concrete - Stress-strain curves - Stresses
Uncontrolled terms: D. digital image correlation (DIC) - Distribution patterns - Emission intensity - Innovative strategies - Intensity distribution - Reinforced concrete beams - Stress strain relation - Structural behaviour
Classification code: 412 Concrete
Concrete
- 751.2 Acoustic Properties of Materials
Acoustic Properties of Materials
DOI: 10.1016/j.conbuildmat.2018.01.002
Funding Details: Number; Sponsor: 2016M592645; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 51425801; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51479013; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51508058; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
17. Heat transfer deterioration in helically coiled heat exchangers in trans-critical CO2Rankine cycles
Accession number: 20180304647151
Authors: Liu, Xinxin (1); Xu, Xiaoxiao (1); Liu, Chao (1); Bai, Wanjin (2); Dang, Chaobin (3)
Author affiliation: (1) Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, No. 174 Shazhengjie, Shapingba, Chongqing; 400044, China; (2) School of Mechanical and Automotive Engineering, Chongqing Jiaotong University, No. 66 Xuefu road, Nan’an, Chongqing; 400074, China; (3) Department of Human and Engineered Environmental Studies, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi; Chiba; 277-8563, Japan
Corresponding author: Xu, Xiaoxiao(xuxiaoxiao@cqu.edu.cn)
Source title: Energy
Abbreviated source title: Energy
Volume: 147
Issue date: March 15, 2018
Publication year: 2018
Pages: 1-14
Language: English
ISSN: 03605442
CODEN: ENEYDS
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: The heat transfer deterioration (HTD) of supercritical CO2encountered in trans-critical CO2Rankine cycle is an important issue related the safety of the whole unit. For the purpose, numerical simulations are performed to get a further insight into the mechanism of heat transfer characteristics of supercritical CO2flow in helically coiled tube (HCT) both in horizontal and vertical orientations with parameters in a range of p = 8 MPa, G = 100–800 kg/m2s and q = 15–140 kW/m2. The Shear-Stress Transport (SST) k–ω turbulence model with enhanced wall treatment method is employed to handle the coupled wall-to-fluid heat transfer. Results show that secondary flow induced by the coil curvature produces a transverse transport of the fluid over the cross section of the pipe and therefore enhances the heat transfer. Additionally, in the vertical oriented HCT, the HTD at supercritical pressure observed in a smooth straight tube (ST) is significantly alleviated. At a higher q/G, the HTD still exists irrespective of coil orientations. But, different from ST, the HTD in HCT is caused by both gravitational and centrifugal buoyancy force. Therefore, the onset of HTD in HCT cannot be predicted by the empirical correlation (q = 0.0002G) derived from analytical and experimental results for ST. Based on numerical calculation, an improved buoyancy parameter is developed to predict buoyancy effect on vertical HCT with an internal upward flow. ? 2018 Elsevier Ltd
Number of references: 57
Main heading: Heat exchangers
Controlled terms: Buoyancy - Carbon dioxide - Deterioration - Heat transfer - Rankine cycle - Shear stress - Transport properties - Turbulence models - Wall function
Uncontrolled terms: Buoyancy forces - Centrifugal Forces - Heat transfer deterioration - Helically coiled tubes - Supercritical CO2
Classification code: 616.1 Heat Exchange Equipment and Components
Heat Exchange Equipment and Components
- 641.1 Thermodynamics
Thermodynamics
- 641.2 Heat Transfer
Heat Transfer
- 804.2 Inorganic Compounds
Inorganic Compounds
- 921 Mathematics
Mathematics
- 931.2 Physical Properties of Gases, Liquids and Solids
Physical Properties of Gases, Liquids and Solids
- 951 Materials Science
Materials Science
Numerical data indexing: Pressure 8.00e+06Pa
DOI: 10.1016/j.energy.2017.12.163
Funding Details: Number; Sponsor: 2017M610590; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 51776020; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
18. { 1 0 ?1 2} twin nucleation induced by FIB micro-stress in magnesium single crystal
Accession number: 20173704151493
Authors: Lou, Chao (1, 2); Yu, Jiangping (2); Liu, Li (3); Ren, Yi (1); Zhang, Xiyan (2)
Author affiliation: (1) National & Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Materials Science and Engineering, Chongqing University, Chongqing; 400030, China; (3) International College, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Lou, Chao(louchao84@163.com)
Source title: Materials Letters
Abbreviated source title: Mater Lett
Volume: 210
Issue date: January 1, 2018
Publication year: 2018
Pages: 139-142
Language: English
ISSN: 0167577X
E-ISSN: 18734979
CODEN: MLETDJ
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: In this study, Mg single crystals (99.99% purity) were subjected to focused ion beam (FIB) bombardment perpendicular and parallel to the c-axis of the hexagonal close packed (HCP) lattice respectively. The research results indicate that the { 1 0 ?1 2} twin nucleation induced by FIB micro-stress in magnesium single crystal is dependent on the applied ion current and the crystal orientation. The incident Ga+ions dose increases with ion current, which would enhance the FIB loading micro-stress. And when the FIB incident direction is parallel to the close-packed (0 0 0 1) plane, there would be more ion-atom interactions during FIB bombardment. Both processing mechanisms could lead to larger precipitate-matrix misfit area and further microstructure damage, which might eventually facilitate { 1 0 ?1 2} twin nucleation. ? 2017 Elsevier B.V.
Number of references: 18
Main heading: Single crystals
Controlled terms: Crystal orientation - Focused ion beams - Ion beams - Ions - Magnesium - Nucleation - Stress analysis
Uncontrolled terms: Close packed - Hexagonal close packed - Ion currents - Ion-atom interactions - Magnesium single crystals - Research results - Twin nucleations
Classification code: 542.2 Magnesium and Alloys
Magnesium and Alloys
- 932.1 High Energy Physics
High Energy Physics
- 933 Solid State Physics
Solid State Physics
- 951 Materials Science
Materials Science
Numerical data indexing: Percentage 1.00e+02%
DOI: 10.1016/j.matlet.2017.09.031
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
19. Experimental study on the thermal conductivity of aeolian sand from the Tibetan Plateau
Accession number: 20174704416170
Authors: Lu, Yan (1, 3); Yu, Wenbing (1, 2); Hu, Da (1, 4); Liu, Weibo (1)
Author affiliation: (1) State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-environment and Resources, CAS, Lanzhou; 730000, China; (2) College of Civil Engineering, Chongqing Jiaotong University, Chongqing, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock; 79416, United States
Corresponding author: Yu, Wenbing(yuwb@lzb.ac.cn)
Source title: Cold Regions Science and Technology
Abbreviated source title: Cold Reg. Sci. Technol.
Volume: 146
Issue date: February 2018
Publication year: 2018
Pages: 1-8
Language: English
ISSN: 0165232X
CODEN: CRSTDL
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: Aeolian sand is an important factor, which can affect the permafrost environment and infrastructures on the Tibetan Plateau. The thermal conductivity of aeolian sand is an important parameter for analyzing the thermal regime of the ground in cold regions. This paper presents the test results of the thermal conductivity of aeolian sand sampled from the Tibetan Plateau in unfrozen state with temperature 20 °C and in frozen state. The aeolian sand samples were measured with water content ranging from 3% to 15% and dry density ranging from 1400 to 1650 kg?m? 3. The results show that the thermal conductivity increased with water content and dry density. Some methods that have been developed for calculating the thermal conductivity of soils are applied to predict the thermal conductivity of aeolian sand. However, these methods all have significant deviations. From the test data, a simple model is proposed as a function of the degree of saturation and the volume fraction of each phase to calculate the thermal conductivity of aeolian sand. The calculated results obtained from the proposed model agree well with the test data. The mean deviations are 2.15% and 4.28% for the unfrozen and frozen states, respectively. ? 2017
Number of references: 24
Main heading: Thermal conductivity
Controlled terms: Sand
Uncontrolled terms: Aeolian sand - Calculation models - Cold regions - Degree of saturations - Permafrost environment - Simple modeling - Thermal regimes - Tibetan Plateau
Classification code: 483.1 Soils and Soil Mechanics
Soils and Soil Mechanics
- 641.1 Thermodynamics
Thermodynamics
Numerical data indexing: Percentage 2.15e+00%, Percentage 3.00e+00% to 1.50e+01%, Percentage 4.28e+00%, Temperature 2.93e+02K
DOI: 10.1016/j.coldregions.2017.11.006
Funding Details: Number; Acronym; Sponsor: QYZDY-SSW-DQC011; CAS; Center for African Studies - Number; Acronym; Sponsor: QYZDYSSW-DQC015; CAS; Center for African Studies
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
20. NO removal efficiency of high-yield carbon nitride irradiated under various light sources
Accession number: 20172103686121
Authors: Lu, Zhenzhen (1); Liu, Dong (1); Yang, Zhiyuan (1); Zhou, Jianting (2)
Author affiliation: (1) Green and Functional Materials Laboratory, ChongQing JiaoTong University, Chongqing; 400074, China; (2) College of Civil Engineering, ChongQing JiaoTong University, Chongqing; 400074, China
Corresponding author: Lu, Zhenzhen(luzz@foxmail.com)
Source title: Materials Science in Semiconductor Processing
Abbreviated source title: Mater Sci Semicond Process
Volume: 73
Issue date: January 2018
Publication year: 2018
Pages: 83-91
Language: English
ISSN: 13698001
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: Graphitic carbon nitride (g-C3N4) is a well-known photocatalyst. In this work, the NO removal efficiency of g-C3N4irradiated under various light sources is explored. For achieving high productivity and activity photocatalyst, the pyrolysis temperature is adjusted from 450 °C to 600 °C. All prepared g-C3N4are put into a transparent reaction box one by one to remove the NO with the initial concentration of 1000 ppb level in air flow under real indoor illumination of three light resources: metal halide lamp, LED lamp and high pressure sodium lamp. According to the photocatalytic reaction results, the NO removal ratio of g-C3N4synthesized under 500 °C can reach to 29.26% under the irradiation of metal halide lamp, overwhelming that of g-C3N4irradiated under other light sources. Several characterization methods were adopt to analyze the photocatalytic reaction mechanism and the micro structures of g-C3N4prepared from melamine. Because of the conduction band potential difference between g-C3N4and melem, heterojunction of melem and g-C3N4can form the convention-type charge transfer, which greatly reduce the combination ratio of photogenerated electrons and holes, thus enhance the photocatalytic activity of g-C3N4under the irradiation of metal halide lamp indicating why the g-C3N4synthesized under 500 °C possesses the best NO removal efficiency among these samples. In addition, compared with other lamps, metal halide lamp is proved to be the most suitable light resource to motivate g-C3N4because of its relatively concentrated light intensity. The present work provide us new perspectives for selecting suitable light resources and proper synthesis conditions for the generation of g-C3N4to achieve better air purification performance in tunnels and indoors. ? 2017 Elsevier Ltd
Number of references: 54
Main heading: Metal halide lamps
Controlled terms: Air cleaners - Air purification - Carbon nitride - Charge transfer - Efficiency - Energy gap - Heterojunctions - Irradiation - Light emitting diodes - Light sources - Metal halides - Metals - Nitrides - Photocatalysis - Photocatalysts
Uncontrolled terms: Diffraction peaks - G-C3N4 - Graphitic carbon nitrides - High pressure sodium lamps - Melem - Photocatalytic activities - Photocatalytic reactions - Photogenerated electrons
Numerical data indexing: Percentage 2.93e+01%, Temperature 7.23e+02K to 8.73e+02K, Temperature 7.73e+02K
DOI: 10.1016/j.mssp.2017.05.016
Funding Details: Number; Sponsor: 2015M580775; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 51408085; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51508058; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
21. An optimal algorithm for cascaded reservoir operation by combining the grey forecasting model with DDDP
Accession number: 20180804821807
Authors: Peng, Yong (1); Zhang, Xiaoli (1, 2); Shi, Yajun (1); Zhang, Zixin (1); Xu, Wei (3)
Author affiliation: (1) School of Hydraulic Engineering, Dalian University of Technology, Dalian, Liaoning; 116024, China; (2) School of Water Conservancy, North China University of Water Resources and Electric, Zhengzhou; 450045, China; (3) School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Zhang, Xiaoli(zxl436@163.com)
Source title: Water Science and Technology: Water Supply
Abbreviated source title: Water Sci. Technol. Water Supply
Volume: 18
Issue: 1
Issue date: February 2018
Publication year: 2018
Pages: 142-150
Language: English
ISSN: 16069749
CODEN: WSTWBM
Document type: Journal article (JA)
Publisher: IWA Publishing, 12 Caxton Street, London, SW1H 0QS, United Kingdom
Abstract: The operation of cascaded reservoirs is a complex problem, and lots of algorithms have been developed for optimal cascaded reservoir operation. However, the existing algorithms usually have disadvantages such as the ‘curse of dimensionality’ and prematurity. This study proposes a grey discrete differential dynamic programming (GDDDP) algorithm for effectively optimizing the cascaded reservoir operation model, which is a combination of the grey forecasting model and discrete differential dynamic programming (DDDP). Additionally, a modification of the grey forecasting model is presented for better forecast accuracy. The proposed method is applied to optimize the Baishan-Fengman cascaded reservoir system in the northeast of China. The results show that GDDDP obtains more power generation than DDDP with less computing time in three cases, i.e., dry years, wet years and the whole series. Especially in the case of the whole series, the power generation of GDDDP is 2.13 MWH more than that of DDDP, while the computing time is decreased by 66,161 ms. Moreover, the power generation of GDDDP is comparable with that of dynamic programming but the computing time is much less. All these indicate GDDDP has high accuracy and efficiency, which implies that it is practicable for the operation of a cascaded reservoir system. ? IWA Publishing 2018.
Number of references: 31
Main heading: Dynamic programming
Controlled terms: Forecasting
Uncontrolled terms: Cascaded reservoirs - Complex problems - Computing time - Curse of dimensionality - Differential dynamic programming - Forecast accuracy - Grey forecasting model - Optimal algorithm
Classification code: 921.5 Optimization Techniques
Optimization Techniques
Numerical data indexing: Time 6.62e+01s
DOI: 10.2166/ws.2017.070
Funding Details: Number; Acronym; Sponsor: 51379027; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51609025; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 91547111; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
22. Dynamics of complex-valued neural networks with variable coefficients and proportional delays
Accession number: 20180404664834
Authors: Song, Qiankun (1); Yu, Qinqin (2); Zhao, Zhenjiang (3); Liu, Yurong (4, 5); Alsaadi, Fuad E. (5)
Author affiliation: (1) Department of Mathematics, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Economic and Management, Chongqing Jiaotong University, Chongqing; 400074, China; (3) Department of Mathematics, Huzhou University, Huzhou; 313000, China; (4) Department of Mathematics, Yangzhou University, Yangzhou; 225002, China; (5) Communication Systems and Networks (CSN) Research Group, Faculty of Engineering, King Abdulaziz University, Jeddah; 21589, Saudi Arabia
Corresponding author: Song, Qiankun(qiankunsong@163.com)
Source title: Neurocomputing
Abbreviated source title: Neurocomputing
Volume: 275
Issue date: 31 January 2018
Publication year: 2018
Pages: 2762-2768
Language: English
ISSN: 09252312
E-ISSN: 18728286
CODEN: NRCGEO
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: In this paper, the dynamics including boundedness and stability for a general class of complex-valued neural networks with variable coefficients and proportional delays are investigated. By employing inequality techniques and mathematical analysis method, some sufficient criteria to guarantee boundedness and global exponential stability are established for the considered neural networks. As a special case that the coefficients of networks are constants, sufficient criteria are also derived to guarantee the existence, uniqueness and global exponential stability of the equilibrium point. This work generalizes and improves previously known results, and the obtained criteria can be tested and applied easily in practice. An illustrative example demonstrates the feasibility of the proposed results. ? 2017 Elsevier B.V.
Number of references: 41
Main heading: Complex networks
Controlled terms: Convergence of numerical methods - Equilibrium constants - Stability - Stability criteria
Uncontrolled terms: Boundedness - Complex-valued neural networks - Equilibrium point - Proportional delays - Variable coefficients
Classification code: 722 Computer Systems and Equipment
Computer Systems and Equipment
- 802.2 Chemical Reactions
Chemical Reactions
- 921.6 Numerical Methods
Numerical Methods
- 961 Systems Science
Systems Science
DOI: 10.1016/j.neucom.2017.11.041
Funding Details: Number; Acronym; Sponsor: 61473332; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61773004; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
23. Mechanical properties and microstructure of magnesia–fly ash pastes
Accession number: 20180704805015
Authors: Wang, Dongxing (1, 2); Wang, Hongwei (1); Di, Shengjie (3)
Author affiliation: (1) Key Laboratory of Geotechnical and Structural Engineering Safety of Hubei Province, School of Civil Engineering, Wuhan University, Wuhan, People’s Republic of China; (2) Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing, People’s Republic of China; (3) Dacheng Kechuang Foundation Construction Co., Ltd., Wuhan, People’s Republic of China
Corresponding author: Wang, Dongxing(dongxing-wang@whu.edu.cn)
Source title: Road Materials and Pavement Design
Abbreviated source title: Road Mater. Pavement Des.
Issue date: February 15, 2018
Publication year: 2018
Pages: 1-12
Language: English
ISSN: 14680629
E-ISSN: 21647402
Document type: Article in Press
Publisher: Taylor and Francis Ltd.
Abstract: An attempt has been made to develop the alkali-activated industrial by-products to reduce the production of Portland cement in many civil engineering applications. The reactive MgO–fly ash blends were reported to have the potential as a novel material for construction. This paper investigates the strength and hydration reaction of reactive MgO–fly ash blends at room temperature up to 90 days. The variation of compressive strength is studied by taking into account the effect of the amount of MgO, curing time and water to solid ratio. The hydration products are analysed through X-ray diffraction, thermogravimetric analysis, scanning electron microscope and energy-dispersive spectrometer (EDS). The result analysis confirms the formation of cementitious materials including brucite (Mg(OH)2) and magnesium silicate hydrate (M-S-H). The amount of M-S-H and brucite is greatly affected by the factors such as MgO content and curing time, and the M-S-H gels are distributed in the form of fibrous or clustered structure. The EDS results reveal that the Mg/Si molar ratio in M-S-H phases alters significantly when the mass ratio of MgO to fly ash varies in pastes. Further study should be performed to investigate the reaction kinetics and hydration products of MgO–SiO2–H2O and MgO–Al2O3–H2O systems in reactive MgO–fly ash blends. ? 2018 Informa UK Limited, trading as Taylor & Francis Group
Main heading: Magnesium compounds
Controlled terms: Compressive strength - Curing - Fly ash - Hydrates - Hydration - Magnesia - Magnesium - Microstructure - Portland cement - Reaction kinetics - Scanning electron microscopy - Silica - Silicates - Spectrometers - Thermogravimetric analysis - X ray diffraction
Uncontrolled terms: Cementitious materials - Civil engineering applications - Energy dispersive spectrometers - Industrial by-products - Magnesium silicates - Properties and microstructures - strength - Water-to-solid ratios
Classification code: 412.1 Cement
Cement
- 542.2 Magnesium and Alloys
Magnesium and Alloys
- 741.3 Optical Devices and Systems
Optical Devices and Systems
- 801 Chemistry
Chemistry
- 802.2 Chemical Reactions
Chemical Reactions
- 804.2 Inorganic Compounds
Inorganic Compounds
- 951 Materials Science
Materials Science
Numerical data indexing: Age 2.47e-01yr
DOI: 10.1080/14680629.2018.1439400
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
24. Utilization of pulverized strontium slag as the admixture of Portland cement
Accession number: 20180404664766
Authors: Wang, Teng (1); Tang, Boming (1)
Author affiliation: (1) College of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Tang, Boming(tangbm6@163.com)
Source title: Journal of Thermal Analysis and Calorimetry
Abbreviated source title: J Therm Anal Calor
Issue date: January 16, 2018
Publication year: 2018
Pages: 1-7
Language: English
ISSN: 13886150
E-ISSN: 15882926
CODEN: JTACF7
Document type: Article in Press
Publisher: Springer Netherlands
Abstract: Due to large output of Portland cement, the utilization of pulverized strontium slag (PSS) as a cement admixture is an available way for the effective recycling of strontium slag. In this study, the performance of Portland cement with the addition of PSS was investigated. At the same time, the leaching behavior of Sr2+was monitored. Results demonstrated that when PSS served as the admixture of Portland cement, the setting time and water demand for normal consistency increased with the increase in PSS content. For the cement containing 5% PSS, the cement paste exhibited better fluidity and the cement mortar exhibited relatively higher compressive strength and flexural strength, lower porosity. When the PSS content reached 10 and 15%, the fluidity of the cement paste and the strength of the cement mortar were merely slightly affected. However, when the PSS content reached 20%, the fluidity of the cement paste and the strength decreased significantly. For the cement containing PSS, the cement mortar exhibited relatively lower drying shrinkage. Besides, the majority of strontium and barium in PSS were immobilized in the cement paste. At 42 d, the leaching rate Sr2+in the cement paste is far below the leaching rate of Sr2+of 1 × 10?3cm d?1. ? 2018 Akadémiai Kiadó, Budapest, Hungary
Main heading: Strength of materials
Controlled terms: Cements - Compressive strength - Fluidity - Leaching - Mortar - Portland cement - Recycling - Setting - Slags - Strontium
Uncontrolled terms: Admixture - Cement admixtures - Cement mortars - Drying shrinkages - Leaching behavior - Leaching rates - Setting time - Water demand
Classification code: 412.1 Cement
Cement
- 414.3 Mortar (Before 1993, use code 412)
Mortar (Before 1993, use code 412)
- 452.3 Industrial Wastes
Industrial Wastes
- 549.2 Alkaline Earth Metals
Alkaline Earth Metals
- 802.3 Chemical Operations
Chemical Operations
- 931.2 Physical Properties of Gases, Liquids and Solids
Physical Properties of Gases, Liquids and Solids
- 951 Materials Science
Materials Science
Numerical data indexing: Percentage 1.00e+01%, Percentage 1.50e+01%, Percentage 2.00e+01%, Percentage 5.00e+00%
DOI: 10.1007/s10973-017-6954-4
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
25. The characterisation of three-dimensional texture morphology of pavement for describing pavement sliding resistance
Accession number: 20180604761660
Authors: Wang, Yuanyuan (1); Yang, Zhiqiu (1); Liu, Yanyan (1); Sun, Lu (2, 3)
Author affiliation: (1) School of Materials Science and Engineering, Chongqing Jiaotong University, No. 66 Xuefu Road, Chongqing 400074, People’s Republic of China; (2) Department of Civil Engineering, Catholic University, 20064 Washington, DC, USA; (3) School of Transportation, Southeast University, No. 2 Sipailou, Nanjing 210096, People’s Republic of China
Corresponding author: Wang, Yuanyuan(wangguangyuan-1005@163.com)
Source title: Road Materials and Pavement Design
Abbreviated source title: Road Mater. Pavement Des.
Issue date: February 6, 2018
Publication year: 2018
Pages: 1-20
Language: English
ISSN: 14680629
E-ISSN: 21647402
Document type: Article in Press
Publisher: Taylor and Francis Ltd.
Abstract: A satisfactory pavement sliding resistance is the guarantee for traffic safety. However, the friction coefficient will be changed with the variation in test speed and the dry or waterish states of pavement, which limits the use of the traditional friction coefficient-based evaluation method. In order to improve the traditional friction coefficient-based evaluation method and expand the applicable scope, texture morphology-based characterisation indicators of the aspects of height, wavelength and shape were established. And the differences between 3D (three-dimensional) characterisation indicators and 2D (two-dimensional) characterisation indicators were analysed. The results show that compared with 3D characterisation indicators, 2D characterisation indicators cannot completely express the abundant information of factual texture morphology. Additionally, for reducing the multicollinearity characteristics, correlation analysis theory was used to analyse the correlation between different indicators. There is a significant correlation relationship between texture morphology-based characterisation indicators and sliding resistance, which implies that the evaluation of sliding resistance based on texture morphology is possible. Besides, the influence of texture morphology-based characterisation indicators on sliding resistance was further analysed. For different asphalt mixtures, the variations of sliding resistance can be well explained by the characteristics of texture morphology. Therefore, the pavement sliding resistance can consider using the texture morphology-based characterisation indicators to evaluate. ? 2018 Informa UK Limited, trading as Taylor & Francis Group
Main heading: Characterization
Controlled terms: Asphalt mixtures - Friction - Morphology - Pavements - Regression analysis - Tribology
Uncontrolled terms: 3-D (three-dimensional) - Correlation analysis - Friction coefficients - Multicollinearity - Photometric stereo - Sliding resistance - Test speed - Traffic safety
Classification code: 411.1 Asphalt
Asphalt
- 922.2 Mathematical Statistics
Mathematical Statistics
- 931 Classical Physics; Quantum Theory; Relativity
Classical Physics; Quantum Theory; Relativity
- 951 Materials Science
Materials Science
DOI: 10.1080/14680629.2018.1433710
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
26. Sorted or pooled? Optimal tournament design for heterogeneous contestants
Accession number: 20180804811450
Authors: Wei, Guangxing (1); Bary, Binta (1); Qin, Yanhong (2)
Author affiliation: (1) School of Economics and Management, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Management, Chongqing University of Technology, Chongqing; 400054, China
Corresponding author: Wei, Guangxing(wgx777@126.com)
Source title: Cluster Computing
Abbreviated source title: Cluster Comput.
Issue date: February 14, 2018
Publication year: 2018
Pages: 1-8
Language: English
ISSN: 13867857
E-ISSN: 15737543
Document type: Article in Press
Publisher: Springer New York LLC
Abstract: The optimal tournament for the heterogeneous contestants is described and developed in approach of game theory, which includes the sorted tournament between the strong contestants with high ability, the sorted tournament between the weak contestants with low ability, and the pooled tournament between the strong and the weak contestants. By comparing the equilibrium results of the incentive structure, the efforts level, and the expected profits in each kind of tournament, it is found that the strong contestants can get more utilities in the pooled tournament, and hence prefer to take part in the pooled tournament to compete with the weak competitors, while the weak contestants only can get the reservation utility in both the sorted and pooled tournament, and hence do not care about the abilities of competitors. The principal will choose and implement the sorted tournament because he can acquire more profits than that in the pooled tournament. ? 2018 Springer Science+Business Media, LLC, part of Springer Nature
Main heading: Game theory
Controlled terms: Profitability
Uncontrolled terms: Comparison - Expected profits - Incentive structure - Pooled tournament - Reservation utilities - Sorted tournament
Classification code: 911.2 Industrial Economics
Industrial Economics
- 922.1 Probability Theory
Probability Theory
DOI: 10.1007/s10586-018-1714-1
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
27. Bridge structure deformation prediction based on GNSS data using kalman-ARIMA-GARCH model
Accession number: 20180404680999
Authors: Xin, Jingzhou (1); Zhou, Jianting (1); Yang, Simon X. (2); Li, Xiaoqing (1); Wang, Yu (3)
Author affiliation: (1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Engineering, University of Guelph, Guelph; ON; N1G 2W1, Canada; (3) School of Engineering, Cardiff University, Cardiff; CF24 3AA, United Kingdom
Corresponding author: Zhou, Jianting(jtzhou@cqjtu.edu.cn)
Source title: Sensors (Switzerland)
Abbreviated source title: Sensors
Volume: 18
Issue: 1
Issue date: January 19, 2018
Publication year: 2018
Article number: 298
Language: English
ISSN: 14248220
Document type: Journal article (JA)
Publisher: MDPI AG, Postfach, Basel, CH-4005, Switzerland
Abstract: Bridges are an essential part of the ground transportation system. Health monitoring is fundamentally important for the safety and service life of bridges. A large amount of structural information is obtained from various sensors using sensing technology, and the data processing has become a challenging issue. To improve the prediction accuracy of bridge structure deformation based on data mining and to accurately evaluate the time-varying characteristics of bridge structure performance evolution, this paper proposes a new method for bridge structure deformation prediction, which integrates the Kalman filter, autoregressive integrated moving average model (ARIMA), and generalized autoregressive conditional heteroskedasticity (GARCH). Firstly, the raw deformation data is directly pre-processed using the Kalman filter to reduce the noise. After that, the linear recursive ARIMA model is established to analyze and predict the structure deformation. Finally, the nonlinear recursive GARCH model is introduced to further improve the accuracy of the prediction. Simulation results based on measured sensor data from the Global Navigation Satellite System (GNSS) deformation monitoring system demonstrated that: (1) the Kalman filter is capable of denoising the bridge deformation monitoring data; (2) the prediction accuracy of the proposed Kalman-ARIMA-GARCH model is satisfactory, where the mean absolute error increases only from 3.402 mm to 5.847 mm with the increment of the prediction step; and (3) in comparision to the Kalman-ARIMA model, the Kalman-ARIMA-GARCH model results in superior prediction accuracy as it includes partial nonlinear characteristics (heteroscedasticity); the mean absolute error of five-step prediction using the proposed model is improved by 10.12%. This paper provides a new way for structural behavior prediction based on data processing, which can lay a foundation for the early warning of bridge health monitoring system based on sensor data using sensing technology. ? 2018 by the authors. Licensee MDPI, Basel, Switzerland.
Number of references: 40
Main heading: Monitoring
Controlled terms: Bridges - Data handling - Data mining - Deformation - Filtration - Forecasting - Global positioning system - Kalman filters - Statistical methods - Structural health monitoring
Uncontrolled terms: Autoregressive integrated moving average models - Bridge engineering - Bridge health monitoring systems - Deformation prediction - Generalized autoregressive conditional heteroskedasticity - Global Navigation Satellite Systems - Health monitoring - Sensor data
Classification code: 401.1 Bridges
Bridges
- 422 Strength of Building Materials; Test Equipment and Methods
Strength of Building Materials; Test Equipment and Methods
- 723.2 Data Processing and Image Processing
Data Processing and Image Processing
- 802.3 Chemical Operations
Chemical Operations
- 922.2 Mathematical Statistics
Mathematical Statistics
Numerical data indexing: Percentage 1.01e+01%, Size 3.40e-03m to 5.85e-03m
DOI: 10.3390/s18010298
Funding Details: Number; Acronym; Sponsor: 51425801; NSF; National Science Foundation - Number; Acronym; Sponsor: 51708067; NSFC; National Natural Science Foundation of China - Number; Sponsor: KJ1600501; Chongqing Municipal Education Commission
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
28. Quantitative risk assessment of freeway crash casualty using high-resolution traffic data
Accession number: 20174004224745
Authors: Xu, Chengcheng (1, 2); Wang, Yong (3); Liu, Pan (1, 2); Wang, Wei (1, 2); Bao, Jie (1, 2)
Author affiliation: (1) Jiangsu Key Laboratory of Urban ITS, Southeast University, Si Pai Lou #2, Nanjing; 210096, China; (2) Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, Southeast University, Si Pai Lou #2, Nanjing; 210096, China; (3) School of Economics and Management, Chongqing Jiaotong University, Xuefu Road #66, Chongqing; 400074, China
Corresponding author: Xu, Chengcheng(xuchengcheng@seu.edu.cn)
Source title: Reliability Engineering and System Safety
Abbreviated source title: Reliab Eng Syst Saf
Volume: 169
Issue date: January 2018
Publication year: 2018
Pages: 299-311
Language: English
ISSN: 09518320
CODEN: RESSEP
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: This study aimed to investigate the impacts of traffic flow conditions on crash casualty of different collision types using high-resolution traffic data. The principle components analysis was conducted to deal with a large number of correlated lane-specific traffic variables. A four-stage random-parameters sequential logistic regression model was then developed to link the probability of crash casualty of each collision type with real-time traffic flow, weather, and geometric conditions. The results showed that the risks of injuries in sideswipe crashes increase with an increase in the speed difference between adjacent lanes, volume on right lane, and standard deviation of volume on inner lanes. The congested traffic conditions and its interaction with adverse weather decrease the risks of injuries in sideswipe crashes. For rear-end crashes, the congested traffic conditions at diverge area, and large difference in speed on right lane between upstream and downstream station in adverse weather contribute to crash casualty. Moreover, high volume on inner lanes reduce the risks of injuries in rear-end crashes. The validation results showed that the prediction accuracy at each severity level by collision types is satisfactory. ? 2017 Elsevier Ltd
Number of references: 47
Main heading: Highway accidents
Controlled terms: Principal component analysis - Regression analysis - Risk assessment - Traffic congestion
Uncontrolled terms: Collision types - Crash casualty - Geometric conditions - Injury severity - Prediction accuracy - Principle components analysis - Quantitative risk assessment - Sequential logistic regressions
Classification code: 914.1 Accidents and Accident Prevention
Accidents and Accident Prevention
- 922.2 Mathematical Statistics
Mathematical Statistics
DOI: 10.1016/j.ress.2017.09.005
Funding Details: Number; Acronym; Sponsor: 51508093; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51561135003; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 71402011; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
29. Vehicle trajectory at curved sections of two-lane mountain roads: a field study under natural driving conditions
Accession number: 20180404674187
Authors: Xu, Jin (1, 2); Luo, Xiao (3); Shao, Yi-Ming (2)
Author affiliation: (1) Chongqing Key Laboratory of Transportation Engineering, Chongqing Jiaotong University, No. 66, XueFu Ave., ChongQing; 400074, China; (2) College of Traffic and Transportation, Chongqing Jiaotong University, No. 66, XueFu Ave., ChongQing; 400074, China; (3) Hunan CSR Times Electric Vehicle Co.Ltd., Shidai Road, ZhuZhou; HuNan; 412007, China
Corresponding author: Xu, Jin(yhnl272727@163.com)
Source title: European Transport Research Review
Abbreviated source title: Eur. Transp. Res. Rev.
Volume: 10
Issue: 1
Issue date: March 1, 2018
Publication year: 2018
Article number: 12
Language: English
ISSN: 18670717
E-ISSN: 18668887
Document type: Journal article (JA)
Publisher: Springer Verlag
Abstract: Purpose: The trajectory of a vehicle is comprehensively affected by the interactions between the vehicle, the driving behavior, and the road environment. High-risk driving behaviors and accident-prone road sections can be identified based on the relationship between the trajectory and road geometry. Previous related studies mostly focused on the trajectory deviation at a few points on the road, which cannot capture the continuous variation of the trajectory in an entire curve, and seldom considered the trajectory characteristics along curves with large deflection angles. The aim of this study is to investigate the trajectories passenger cars take on two-lane mountain roads and thus to determine the track patterns and its relevant risks. Methods: Field driving experiments were performed on four two-lane mountain highways, and vehicle trajectories under natural driving conditions were acquired. The continuous change in the lateral deviation rate of the trajectory was also determined by putting the measured trajectories into the coordinate frame together with the edge line of roadway. Further, the morphological features of the vehicle trajectory and how it is affected by the highway geometry were analyzed. Results and conclusions: The following were observed: i) Typical track patterns were determined according to features of LDRT profiles, four patterns for left-hand bends and five patterns for right-hand bends, which can be used to identify crash prone position and reveal the mechanism of crash. ii) Inertia may cause the vehicle to move too close to the outer side of the curve after a cut, for which reason the driver has to correct the trajectory, although overcorrection may move the vehicle into the oncoming lane. iii) A higher speed at curve entry adopt by the driver could result in a larger encroachment into opposite lane or shoulder. iv) The smaller the radius of the horizontal curve, the more frequently the trajectory entered the oncoming lane. These findings could provide a better understanding of the track behavior of passenger cars, judge the safety implications of driver behavior, and thus identify crash prone positioning and the potential mechanisms of head-on crashes, run-off-road and guardrail collisions. ? 2018, The Author(s).
Number of references: 26
Main heading: Accidents
Controlled terms: Accident prevention - Automobiles - Behavioral research - Curves (road) - Highway engineering - Highway traffic control - Landforms - Motor transportation - Off road vehicles - Roads and streets - Safety engineering - Trajectories - Transportation - Vehicles
Uncontrolled terms: Lane departure - Oncoming lane occupation - Road safety - Track, natural driving - Vehicle trajectories
Classification code: 406.1 Highway Systems
Highway Systems
- 406.2 Roads and Streets
Roads and Streets
- 481.1 Geology
Geology
- 662.1 Automobiles
Automobiles
- 914 Safety Engineering
Safety Engineering
- 914.1 Accidents and Accident Prevention
Accidents and Accident Prevention
- 971 Social Sciences
Social Sciences
DOI: 10.1007/s12544-018-0284-x
Funding Details: Number; Acronym; Sponsor: 51278514; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51678099; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
30. On use of characteristic wavelengths of track irregularities to predict track portions with deteriorated wheel/rail forces
Accession number: 20175104547403
Authors: Xu, Lei (1, 2); Zhai, Wanming (1); Chen, Zhaowei (3)
Author affiliation: (1) Train and Track Research Institute, State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu; 610031, China; (2) Section of Railway Engineering, Faculty of Civil Engineering and Geoscience, Delft University of Technology, Delft, Netherlands; (3) School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Zhai, Wanming(wmzhai@swjtu.edu.cn)
Source title: Mechanical Systems and Signal Processing
Abbreviated source title: Mech Syst Signal Process
Volume: 104
Issue date: May 1, 2018
Publication year: 2018
Pages: 264-278
Language: English
ISSN: 08883270
E-ISSN: 10961216
CODEN: MSSPEP
Document type: Journal article (JA)
Publisher: Academic Press
Abstract: The dynamic performance of the railway vehicles and the guiding tracks is mainly governed by the wheel-rail interactions, particularly in cases of track irregularities. In this work, a united model was developed to investigate the track portions subject to violent wheel/rail forces triggered by track irregularities at middle-low frequencies. In the modeling procedures, a time-frequency unification method combining wavelet transform and Wigner-Ville distribution for characterizing time-frequency characteristics of track irregularities and a three-dimensional nonlinear model for describing vehicle-track interaction signatures were developed and coupled, based on which the method for predicting track portions subject to deteriorated wheel/rail forces was proposed. The theoretical models developed in this paper were comprehensively validated by numerical investigations. The significance of this present study mainly lies on offering a new path to establish correlation and realize mutual prediction between track irregularity and railway system dynamics. ? 2017 Elsevier Ltd
Number of references: 45
Main heading: Vehicle wheels
Controlled terms: Forecasting - Mathematical transformations - Railroad tracks - Railroad transportation - Railroads - Rails - Vehicles - Wavelet transforms - Wheels - Wigner-Ville distribution
Uncontrolled terms: Prediction methods - Time-frequency analysis methods - Track irregularity - Vehicle-track coupled dynamics - Wheel/rail interaction
Classification code: 433.1 Railroad Transportation, General
Railroad Transportation, General
- 601.2 Machine Components
Machine Components
- 681.1 Railway Plant and Structures, General
Railway Plant and Structures, General
- 921.3 Mathematical Transformations
Mathematical Transformations
- 922 Statistical Methods
Statistical Methods
DOI: 10.1016/j.ymssp.2017.10.038
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
31. Dynamical load sharing behaviors of heavy load planetary gear system with multi-floating components
Accession number: 20173204031324
Authors: Xu, Xiangyang (1, 2); Luo, Tianhong (1); Luo, Jiayuan (1); Hua, Xia (3); Langari, Reza (4)
Author affiliation: (1) School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) College of Optoelectronic Engineering, Chongqing University, Chongqing; 400030, China; (3) School of Mechanical Engineering, Purdue University, West Lafayette; IN; 47907-2088, United States; (4) Department of Mechanical Engineering, Texas AandM University, College Station; 77843, United States
Corresponding author: Xu, Xiangyang(xxiangyang@hotmail.com)
Source title: International Journal of Modeling, Simulation, and Scientific Computing
Abbreviated source title: Intl. J. Model. Simul. Sci. Comput.
Volume: 9
Issue: 1
Issue date: February 1, 2018
Publication year: 2018
Article number: 1850005
Language: English
ISSN: 17939623
E-ISSN: 17939615
Document type: Journal article (JA)
Publisher: World Scientific Publishing Co. Pte Ltd
Abstract: To investigate the dynamical load sharing behaviors of multi-floating components in the heavy load planetary gear system, a multi-floating planetary gear system that includes a floating central component and a quasi-floating planet flexible supporting pin is employed. Then a 21 degree of freedom lumped parameters dynamical model of this system is presented to study the dynamical load sharing behaviors. Some influencing factors, such as supporting stiffness, positions error of sun or carrier, and external input load are analyzed on the dynamical load sharing of the planetary gear system with multi-floating components. The results demonstrate that the load sharing condition of the system is best when both the sun gear and planet gears are multi-floating at the same time. When the planet gear position errors remain constant, reducing the flexible pin stiffness of planet gear or increasing external input load can effectively improve the load sharing. These conclusions are verified by the relevant experiments. ? 2018 World Scientific Publishing Company.
Number of references: 19
Main heading: Gears
Controlled terms: Degrees of freedom (mechanics) - Dynamical systems - Stiffness
Uncontrolled terms: Central component - Degree of freedom - Dynamical model - Load sharing - Lumped parameter - Multi-floating components - Planetary gear systems - Position errors
DOI: 10.1142/S1793962318500058
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
32. Transportation service procurement bid construction problem from less than truckload perspective
Accession number: 20180604778555
Authors: Yan, Fang (1); Ma, Yanfang (2); Xu, Manjing (3); Ge, Xianlong (1)
Author affiliation: (1) School of Economics and Management, Chongqing Jiaotong University, Chongqing; 40074, China; (2) School of Economics and Management, Hebei University of Technology, Tianjin; 300130, China; (3) College of Information and Business, Zhongyuan University of Technology, Zhengzhou; 450007, China
Corresponding author: Yan, Fang(yanfang@cqjtu.edu.cn)
Source title: Mathematical Problems in Engineering
Abbreviated source title: Math. Probl. Eng.
Volume: 2018
Issue date: January 17, 2018
Publication year: 2018
Article number: 1728512
Language: English
ISSN: 1024123X
E-ISSN: 15635147
Document type: Journal article (JA)
Publisher: Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
Abstract: This paper presents mixed integer programming for a transportation service procurement bid construction problem from a less than full truckload perspective, in which the bidders (carriers) generate their best bid (package) using a bundled price to maximize their utility and increase the chance of winning the business .The models are developed from both the carriers and shippers perspectives to establish a relationship between the quoted price and the likelihood of winning to assist the carriers in balancing the potential benefits and the possibility of winning the bid. An intelligent algorithm based on Particle Swarm Optimization is then designed to solve the proposed model and hypothetical data sets are used to test the effectiveness and efficiency of the proposed model and algorithm. Copyright ? 2018 Fang Yan et al.
Number of references: 38
Main heading: Integer programming
Controlled terms: Optimization - Particle swarm optimization (PSO) - Transportation - Trucks
Uncontrolled terms: Construction problem - Effectiveness and efficiencies - Hypothetical data sets - Intelligent Algorithms - Less-than-truckload - Mixed integer programming - Model and algorithms - Transportation services
Classification code: 663.1 Heavy Duty Motor Vehicles
Heavy Duty Motor Vehicles
- 921.5 Optimization Techniques
Optimization Techniques
DOI: 10.1155/2018/1728512
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
33. Dynamic process of the thermal regime of a permafrost tunnel on Tibetan Plateau
Accession number: 20173504082769
Authors: Yu, Wenbing (1, 2); Lu, Yan (1, 3); Han, Fenglei (1, 2); Liu, Yongzhi (1); Zhang, Xuefu (2)
Author affiliation: (1) State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-environment and Resources, CAS, Lanzhou; 730000, China; (2) College of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author: Han, Fenglei(718859612@qq.com)
Source title: Tunnelling and Underground Space Technology
Abbreviated source title: Tunn. Undergr. Space Technol.
Volume: 71
Issue date: January 2018
Publication year: 2018
Pages: 159-165
Language: English
ISSN: 08867798
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: The thermal status of the rock surrounding tunnel will change during construction and operation periods in cold regions, thereby affecting the stability of tunnel. Field observations of thermal regime of a permafrost tunnel were conducted on Tibetan Plateau. The results show that during the past 12 years, the surrounding rock experienced a warming that subsequently returned to the natural thermal regime, and that was followed by a cooling process. The thermal disturbance distance of the surrounding rock was approximately 30.5 m after the construction. Compared with the air temperature outside the tunnel, heat source of the construction has a great influence on the temperature of the permafrost surrounding the tunnel. The temperature of the permafrost is sinusoidally varying, which achieves a steady state after twelve freeze–thaw cycles. The mean annual ground temperature of the permafrost, and the maximum and minimum temperature amplitudes decreased with time. The heat convection between the air in the tunnel and the surrounding rock during the operation of trains needs to be considered for the design of the permafrost tunnel that could gradually reduce the temperature of the permafrost. The permafrost tunnel could occur to freeze–thaw damage for the sections that lack laid insulation material. ? 2017 Elsevier Ltd
Number of references: 24
Main heading: Permafrost
Controlled terms: Heat convection - Railroad tunnels - Rocks - Thawing - Tunnels
Uncontrolled terms: Cold regions - Field observations - Ground temperature - Insulation materials - Maximum and minimum temperatures - Operation period - Thermal disturbance - Thermal regimes
Classification code: 401.2 Tunnels and Tunneling
Tunnels and Tunneling
- 641.2 Heat Transfer
Heat Transfer
Numerical data indexing: Age 1.20e+01yr, Size 3.05e+01m
DOI: 10.1016/j.tust.2017.08.021
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
34. Effect of high content of manganese on microstructure, texture and mechanical properties of magnesium alloy
Accession number: 20175204587710
Authors: Yu, Zhengwen (1, 2); Tang, Aitao (2); He, Jiejun (2, 3); Gao, Zhengyuan (4); She, Jia (2); Liu, Jianguo (1); Pan, Fusheng (2)
Author affiliation: (1) Special Key Laboratory of Oral Disease Research, Higher Education Institution in Guizhou Province, Zunyi Medical University, Zunyi; 563003, China; (2) College of Materials Science and Engineering, Chongqing University, Chongqing; 400044, China; (3) College of Materials and Metallurgy, Guizhou Institute of Technology, Guiyang; 550003, China; (4) School of Mechatronics and Automotive Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Yu, Zhengwen(zwyu@zmc.edu.cn)
Source title: Materials Characterization
Abbreviated source title: Mater Charact
Volume: 136
Issue date: February 2018
Publication year: 2018
Pages: 310-317
Language: English
ISSN: 10445803
CODEN: MACHEX
Document type: Journal article (JA)
Publisher: Elsevier Inc.
Abstract: In the present investigation, microstructure, texture and mechanical properties of Mg-3Mn alloys fabricated by hot extrusion process with the extrusion temperatures of 250 °C and 300 °C were investigated. The results revealed that the samples exhibited the refined microstructure and weakened basal texture. Refined microstructure of the samples was attributed to the dynamic precipitates suppressing the recrystallization grain growth during extrusion process. Weakened basal texture of the samples was explained as a result of particle stimulated nucleation (PSN) promoted by coarsened Mn precipitates altering the texture of extruded profiles during recrystallization by orienting the c-axis of grains at an angle that favors basal slip activity. As a result, the samples exhibited the high tensile elongation and good yield strength at room temperature. ? 2017 Elsevier Inc.
Number of references: 57
Main heading: Manganese alloys
Controlled terms: Binary alloys - Crystal microstructure - Dynamic recrystallization - Extrusion - Grain growth - Magnesium - Magnesium alloys - Manganese - Mechanical properties - Microstructure - Recrystallization (metallurgy) - Tensile strength - Textures
Uncontrolled terms: Extruded profiles - Extrusion process - Extrusion temperatures - Hot extrusion process - Particle stimulated nucleation - Recrystallization grains - Refined microstructure - Tensile elongation
Classification code: 531.1 Metallurgy
Metallurgy
- 542.2 Magnesium and Alloys
Magnesium and Alloys
- 543.2 Manganese and Alloys
Manganese and Alloys
- 933.1.1 Crystal Lattice
Crystal Lattice
- 933.1.2 Crystal Growth
Crystal Growth
- 951 Materials Science
Materials Science
Numerical data indexing: Temperature 5.23e+02K, Temperature 5.73e+02K
DOI: 10.1016/j.matchar.2017.12.029
Funding Details: Number; Sponsor: 2067; Natural Science Foundation of Guizhou Province - Number; Acronym; Sponsor: 51474043; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51501045; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
35. Characteristic and mechanism of structural acoustic radiation for box girder bridge in urban rail transit
Accession number: 20180604776890
Authors: Zhang, Xiaoan (1, 2); Zhai, Wanming (1, 2); Chen, Zhaowei (3); Yang, Jianjin (2)
Author affiliation: (1) School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou; 730070, China; (2) Train and Track Research Institute, State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu; 610031, China; (3) School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Zhai, Wanming(wmzhai@swjtu.edu.cn)
Source title: Science of the Total Environment
Abbreviated source title: Sci. Total Environ.
Volume: 627
Issue date: June 15, 2018
Publication year: 2018
Pages: 1303-1314
Language: English
ISSN: 00489697
E-ISSN: 18791026
CODEN: STEVA8
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: Noise caused by urban rail transit (URT) has been a hot concerned issue for a long time, and the secondary noise caused by viaduct bridges even make the problem more serious. As well known, structural acoustic radiation (SAR) induced by vibrations of concrete bridges is usually in low frequency. By now, the existing studies mainly focused on the noise above 20 Hz, while the infrasonic wave below 20 Hz attracts few investigations. However, it is more harmful to human according to relevant medical researches. Focusing on the viaduct bridges in a URT line laid with floating-slab track (FST), the characteristic and mechanism of SAR caused by box girder bridges are investigated in this paper. Primarily, a detailed train-FST-bridge dynamic interaction model is established, which is solved through an advanced mixed explicit-implicit integration method. Then, the SAR of the concerned bridge is analyzed adopting indirect boundary element method, including the infrasonic wave below 20 Hz. And finally the mechanism of SAR is investigated based on the theories of structural vibration and acoustic. The conclusions provide theoretical foundation of vibration and noise reduction for viaduct bridges in URT systems. ? 2018
Number of references: 40
Main heading: Box girder bridges
Controlled terms: Acoustic emissions - Acoustic noise - Acoustic properties - Acoustic radiators - Acoustic wave propagation - Acoustic wave transmission - Acoustic waves - Architectural acoustics - Boundary element method - Bridge decks - Bridges - Dynamic response - Light rail transit - Noise abatement - Railroad tracks - Sailing vessels - Steel bridges - Structural analysis - Structural dynamics
Uncontrolled terms: Acoustic radiation - Explicit implicit integration - Floating slab track - Indirect boundary element method - Structural acoustic radiation - Theoretical foundations - Urban rail transit - Vibration and noise reduction
Classification code: 401.1 Bridges
Bridges
- 408 Structural Design
Structural Design
- 408.1 Structural Design, General
Structural Design, General
- 433.1 Railroad Transportation, General
Railroad Transportation, General
- 674.1 Small Marine Craft
Small Marine Craft
- 681.1 Railway Plant and Structures, General
Railway Plant and Structures, General
- 751 Acoustics, Noise. Sound
Acoustics, Noise. Sound
- 752.1 Acoustic Devices
Acoustic Devices
- 921.6 Numerical Methods
Numerical Methods
Numerical data indexing: Frequency 2.00e+01Hz
DOI: 10.1016/j.scitotenv.2018.01.297
Funding Details: Number; Acronym; Sponsor: 11790280; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51735012; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: TPL1604; SWJTU; Southwest Jiaotong University
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
36. Influence of diversion channel section type on landslide dam draining effect
Accession number: 20180404680868
Authors: Zhao, Tianlong (1); Chen, Shengshui (2); Fu, Changjing (1); Zhong, Qiming (3)
Author affiliation: (1) Key Laboratory for Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Nanjing Hydraulic Research Institute, Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-rock Dam of the Ministry of Water Resources, Nanjing; 210029, China; (3) Department of Geotechnical Engineering, Nanjing Hydraulic Research Institute, Nanjing; 210029, China
Corresponding author: Fu, Changjing(546684412@qq.com)
Source title: Environmental Earth Sciences
Abbreviated source title: Environ. Earth Sci.
Volume: 77
Issue: 2
Issue date: January 1, 2018
Publication year: 2018
Article number: 54
Language: English
ISSN: 18666280
E-ISSN: 18666299
Document type: Journal article (JA)
Publisher: Springer Verlag
Abstract: The present study focuses on the emergency response measures for landslide dams. This work presents a series of centrifuge model tests conducted on the draining processes of barrier dams that are based on the grain composition of the Tangjiashan landslide dam. The effects of diversion channels with trapezoid, triangular, and compound sections on the discharge, process, and size of the residual dam are discussed. The characteristics of the flow erosion during the process of discharge in the different channels are analyzed based on hydrodynamics. The results suggest that a diversion channel with a compound section has a higher initial discharge efficiency and lower peak flow, and the flow process curve corresponds to a “chunky-type.” The draining from this type of a diversion channel could clearly reduce the flood pressure of the river downstream and make the entire process smoother. Thus, the excavation of a diversion channel with a compound section is an efficient and safe method for landslide dam emergency mitigation. ? 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
Number of references: 30
Main heading: Dams
Controlled terms: Flow patterns - Landslides - River diversion
Uncontrolled terms: Centrifugal test - Centrifuge model test - Discharge efficiency - Emergency measures - Emergency response measures - Grain composition - Landslide dam - Tangjiashan landslides
Classification code: 441 Dams and Reservoirs; Hydro Development
Dams and Reservoirs; Hydro Development
- 441.1 Dams
Dams
- 631.1 Fluid Flow, General
Fluid Flow, General
DOI: 10.1007/s12665-017-7217-1
Funding Details: Number; Acronym; Sponsor: 51709025; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
37. A Study on Characteristics of MSAV Based on SAL-F Algorithm
Accession number: 20180704791476
Authors: Zhu, Lin (1)
Author affiliation: (1) Foreign Language College, Chongqing Jiaotong University, Chongqing, China
Corresponding author: Zhu, Lin(dkjhqirnsfbrye@hotmail.com)
Source title: Wireless Personal Communications
Abbreviated source title: Wireless Pers Commun
Issue date: February 8, 2018
Publication year: 2018
Pages: 1-10
Language: English
ISSN: 09296212
E-ISSN: 1572834X
CODEN: WPCOFW
Document type: Article in Press
Publisher: Springer New York LLC
Abstract: The traditional method of lexical interpretation is to use a few words to explain some other words. Its lexical semantic information cannot be applied to natural language processing oriented towards physical contexts, on the basis of which the paper proposes a lexical semantic representation model based on graphic feature vectors and its learning algorithm Sal-F. The algorithm applies cross-situational learning to the alignment of word-graph features, establishes visual semantic model of words (Lsm-G) on the basis of the feature selection results and constructs semantic dictionary based on graphic features. According to evaluation methods such as machine translation, the algorithm achieves a word average accuracy of 70% and the highest sentence accuracy of 16%. ? 2018 Springer Science+Business Media, LLC, part of Springer Nature
Main heading: Learning algorithms
Controlled terms: Natural language processing systems - Semantics
Uncontrolled terms: Context theory - Evaluation methods - Learning effects - Lexical semantics - Machine translations - Receptive vocabularies - Semantic dictionaries - Visual semantics
Classification code: 723.2 Data Processing and Image Processing
Data Processing and Image Processing
Numerical data indexing: Percentage 1.60e+01%, Percentage 7.00e+01%
DOI: 10.1007/s11277-017-5145-8
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
三、ISTP
*Record 1 of 5. Search terms matched: CHONGQING 400074(1); CHONGQING JIAOTONG(1)
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Title: On the stability of solutions for semi-infinite vector optimization problems
Authors: Peng, ZY; Peng, JW; Long, XJ; Yao, JC
Author Full Names: Peng, Zai-Yun; Peng, Jian-Wen; Long, Xian-Jun; Yao, Jen-Chih
Source: JOURNAL OF GLOBAL OPTIMIZATION, 70 (1):55-69; SI 10.1007/s10898-017-0553-6 JAN 2018
Language: English
Abstract: This paper is concerned with the stability of semi-infinite vector optimization problems (SVO). Under weak assumptions, we establish sufficient conditions of the Berge-lower semicontinuity and lower Painlev-Kuratowski convergence of weak efficient solutions for (SVO) under functional perturbations of both objective functions and constraint sets. Some examples are given to illustrate that our results are new and interesting.
ISSN: 0925-5001
eISSN: 1573-2916
IDS Number: FS6XD
Unique ID: WOS:000419940800004
*Record 2 of 5. Search terms matched: CHONGQING 400074(2); CHONGQING JIAOTONG(2)
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Title: CHARACTERIZATIONS OF SEMICONTINUITY OF GENERALIZED APPROXIMATE KY FAN'S POINTS
Authors: Peng, ZY; Lin, Z; Sun, XK; Wang, QL
Author Full Names: Peng, Zai-Yun; Lin, Zhi; Sun, Xiang-Kai; Wang, Qi-Lin
Source: PACIFIC JOURNAL OF OPTIMIZATION, 13 (4):607-620; OCT 2017
Language: English
Abstract: In this paper, we mainly concern with the stability for generalized approximate Ky Fan inequality problems. Firstly, we give a sufficient condition of completeness to the space P of generalized approximate Ky Fan inequality problems. Then, under new assumptions, which are different from the proper quasi convexity and even weaker than the continuity, we provide sufficient and necessary conditions of upper semicontinuity (and usco) of solution mappings for generalized approximate Ky Fan inequality problems under perturbations. Our results extend and improve some known results in the literature.
ISSN: 1348-9151
IDS Number: FR9WB
Unique ID: WOS:000419422700004
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Title: ON ROBUST APPROXIMATE OPTIMAL SOLUTIONS FOR UNCERTAIN CONVEX OPTIMIZATION AND APPLICATIONS TO MULTI-OBJECTIVE OPTIMIZATION
Authors: Sun, XK; Li, XB; Long, XJ; Peng, ZY
Author Full Names: Sun, Xiang-Kai; Li, Xiao-Bing; Long, Xian-Jun; Peng, Zai-Yun
Source: PACIFIC JOURNAL OF OPTIMIZATION, 13 (4):621-643; OCT 2017
Language: English
Abstract: In this paper, we consider robust approximate optimal solutions for a convex optimization problem in the face of data uncertainty. By employing conjugate analysis, we first introduce a robust type closed convex constraint qualification, and then we establish necessary and sufficient optimality conditions for robust approximate optimal solutions of this uncertain convex optimization problem by using robust optimization approach (worst-case approach). In addition, we also introduce types of Wolfe and Mond-Weir robust dual problems and investigate robust approximate weak and strong duality relations. Moreover, as applications, using a scalarization method, we establish optimality conditions and duality theorems for weakly robust approximate efficient solutions of an uncertain multi-objective optimization problem.
ISSN: 1348-9151
IDS Number: FR9WB
Unique ID: WOS:000419422700005
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Title: GENERIC STABILITY OF THE SOLUTION MAPPING FOR SEMI-INFINITE VECTOR OPTIMIZATION PROBLEMS IN BANACH SPACES
Authors: Long, XJ; Peng, ZY; Sun, XK; Li, XB
Author Full Names: Long, Xian-Jun; Peng, Zai-Yun; Sun, Xiang-Kai; Li, Xiao-Bing
Source: PACIFIC JOURNAL OF OPTIMIZATION, 13 (4):593-605; OCT 2017
Language: English
Abstract: In this paper, we consider the generic stability of the weakly efficient solution mapping for semi infinite vector optimization problems under perturbations of both objective and constraint functions. We show that the weakly efficient solution mapping is upper semicontinuous and, in the sense of Baire category, most of semi-infinite vector optimization problems are essential. As application of our results, we obtain the density of the set of all problems whose weakly efficient solution mappings is continuous. Our results improve the corresponding results in the literatures.
ISSN: 1348-9151
IDS Number: FR9WB
Unique ID: WOS:000419422700003
*Record 5 of 5. Search terms matched: CHONGQING JIAOTONG(2)
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Title: Experimental Study of a Structural Health Monitoring Method Based on Piezoelectric Element Array
Authors: Li, XX; Cui, HM; Zhang, BN; Yuan, C
Author Full Names: Li, Xingxing; Cui, Hongmei; Zhang, Benniu; Yuan, Can
Edited by: Xu B
Source: 2017 IEEE 3RD INFORMATION TECHNOLOGY AND MECHATRONICS ENGINEERING CONFERENCE (ITOEC), 27-31; 2017
Language: English
Abstract: Structural health monitoring plays an important role in protecting civil infrastructures. Smart film bionic monitoring method and video image monitoring method have advantages of high speed and perceptual intuition, so they have been well applied in structural health monitoring. However, the two methods are difficult in detecting structural stress condition and limited in some monitoring aspects. In this paper, a structural health monitoring method and system based on piezoelectric element array is proposed. The experiments show it can detect structural stress condition effectively and display the results by matrix images directly.
ISBN: 978-1-5090-5363-6
IDS Number: BJ3DH
Unique ID: WOS:000422907300006
