一、SCI 7条
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Title: On use of characteristic wavelengths of track irregularities to predict track portions with deteriorated wheel/rail forces
Authors: Xu, L; Zhai, WM; Chen, ZW
Author Full Names: Xu, Lei; Zhai, Wanming; Chen, Zhaowei
Source: MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 104 264-278; 10.1016/j.ymssp.2017.10.038 MAY 1 2018
Language: English
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. (C) 2017 Elsevier Ltd. All rights reserved.
ISSN: 0888-3270
IDS Number: FU2BI
Unique ID: WOS:000423652800016
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Title: Utilization of pulverized strontium slag as the admixture of Portland cement
Authors: Wang, T; Tang, BM
Author Full Names: Wang, Teng; Tang, Boming
Source: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 132 (1):285-291; 10.1007/s10973-017-6954-4 APR 2018
Language: English
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 x 10(-3) cm d(-1).
ISSN: 1388-6150
eISSN: 1588-2926
IDS Number: FY4LL
Unique ID: WOS:000426795200028
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Title: Estimation of the stress level on a cross section of a reinforced concrete beam via Acoustic emission Intensity Distribution (AID) analysis
Authors: Liu, SM; Ma, HX
Author Full Names: Liu Simeng; Ma Huixiang
Source: CONSTRUCTION AND BUILDING MATERIALS, 164 463-476; 10.1016/j.conbuildmat.2018.01.002 MAR 10 2018
Language: English
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. (C) 2018 Elsevier Ltd. All rights reserved.
ISSN: 0950-0618
eISSN: 1879-0526
IDS Number: FY9WV
Unique ID: WOS:000427218500042
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Title: Study of stiffness and bearing capacity degradation of reinforced concrete beams under constant-amplitude fatigue
Authors: Liu, FP; Zhou, JT; Yan, L
Author Full Names: Liu, Fangping; Zhou, Jianting; Yan, Lei
Source: PLOS ONE, 13 (3):10.1371/journal.pone.0192797 MAR 9 2018
Language: English
Abstract: For a reinforced concrete beam subjected to fatigue loads, the structural stiffness and bearing capacity will gradually undergo irreversible degeneration, leading to damage. Moreover, there is an inherent relationship between the stiffness and bearing capacity degradation and fatigue damage. In this study, a series of fatigue tests are performed to examine the degradation law of the stiffness and bearing capacity. The results pertaining to the stiffness show that the stiffness degradation of a reinforced concrete beam exhibits a very clear monotonic decreasing "S" curve, i.e., the stiffness of the beam decreases significantly at the start of the fatigue loading, it undergoes a linear decline phase in the middle for a long loading period, and before the failure, the bearing capacity decreases drastically again. The relationship between the residual stiffness and residual bearing capacity is determined based on the assumption that the residual stiffness and residual bearing capacity depend on the same damage state, and then, the bearing capacity degradation model of the reinforced concrete beam is established based on the fatigue stiffness. Through the established model and under the premise of the known residual stiffness degradation law, the degradation law of the bearing capacity is determined by using at least one residual bearing capacity test data, for which the parameters of the stiffness degradation function are considered as material constants. The results of the bearing capacity show that the bearing capacity degradation of the reinforced concrete beam also exhibits a very clear monotonic decreasing "S" curve, which is consistent with the stiffness degradation process and in good agreement with the experiment. In this study, the stiffness and bearing capacity degradation expressions are used to quantitatively describe their occurrence in reinforced concrete beams. In particular, the expression of the bearing capacity degradation can mitigate numerous destructive tests and save cost. The stiffness and bearing capacity degradation expressions for a reinforced concrete beam can be used to predict the deformation and bearing capacity of a structure during the service process and determine the structural fatigue damage and degree of degradation.
ISSN: 1932-6203
Article Number: e0192797
IDS Number: FY7GW
Unique ID: WOS:000427030800013
PubMed ID: 29522572
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Title: Research on the virtual reality of vibration characteristics in vehicle cabin based on neural networks
Authors: Peng, JS; Xu, L; Shao, YM
Author Full Names: Peng, Jinshuan; Xu, Lei; Shao, Yiming
Source: NEURAL COMPUTING & APPLICATIONS, 29 (5):1225-1232; SI 10.1007/s00521-016-2829-z MAR 2018
Language: English
Abstract: A finite element model of commercial vehicles was firstly built in the paper to study the virtual reality of vibration characteristics, and the top 6-order modal was then computed and compared with the experimental results to verify the reliability of the computational model. Then, a neural network model of the cabin was built. Through road tests, the excitation signal at the cabin suspension point and the response signal of interior vibration noise were measured under the idle condition and constant speed condition. The measured excitation signal was applied to the prediction model for frequency response analysis, in order to compute the interior noise within the range 20-200 Hz. The obtained simulation result of the vibration noise was compared with the experimental result and analyzed. As indicated from the analysis, the influence of excitation spectrum and the model can be reflected by the simulation response spectrum, which is consistent with the experimental result. The higher precision can be also obtained when the model is applied to predict the interior noise.
ISSN: 0941-0643
eISSN: 1433-3058
IDS Number: FY5GA
Unique ID: WOS:000426853600004
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Title: Study on Relation Between Noise and Matrix Dimension of Data-driven Stochastic Subspace Identification Method
Authors: Xin, JF; Zhang, YB; Sheng, JL
Author Full Names: Xin, Jun-feng; Zhang, Yong-bo; Sheng, Jin-lu
Source: JOURNAL OF THE CHINESE SOCIETY OF MECHANICAL ENGINEERS, 39 (1):113-120; FEB 2018
Language: English
Abstract: As a linear system identification method, the data-driven stochastic subspace method can effectively obtain modal parameters from the structural signal under ambient excitation. The noise reduction ability of the method is related with its Hankel matrix dimension. The relation between the noise and Hankel matrix of data-driven subspace identification method was introduced theoretically. And a verification procedure was proposed to justify that the noise can be eliminated properly by the data-driven subspace identification method with selected Hankel matrix. The procedure includes SVD, stability diagram and finite element result (FE). The results of numerical study and jacket platform vibration test demonstrate that the data-driven stochastic subspace identification method with non-square Hankel matrix is of better capability of denoising and can estimate modal parameters with higher accuracy. Effective modal identification method can obtain the relevant parameters of the structure, which can accurately get the basic health status of large structures. Many scholars at home and abroad (Ewins et al., 1984; Juang et al.;1985; Overschee et al., 1993) proposed modal parameter identification method based on time-domain response, such as time series, random decrement method, the natural excitation technique, data-driven stochastic subspace method. Among them, the data-driven stochastic subspace method is by far one of the more advanced modal parameter identification methods under environmental incentives. It can extract modal parameters of large structures such as offshore platforms more accurately. However, to determine the Hankel matrix dimension is the key to the effective application of this method based on Peeters(1999), and different Hankel matrix dimensions will result in different noise-canceling capabilities of data-driven stochastic subspace method (Maia et al., 1997; Peter et al.,1996; Li et al.,2011). How to determine the dimensions of Hankel matrices? Current research on this issue is still rarely reported. In response to these problems, we studied the theoretical relationship between Hankel matrix dimension and the data-driven stochastic subspace noise-canceling method, then we proposed Hankel matrix dimensions selection method of data-driven stochastic subspace identification method. And we discussed the relationship between data-driven stochastic subspace noise-canceling capabilities and different Hankel matrix build ways.
ISSN: 0257-9731
IDS Number: FY5RB
Unique ID: WOS:000426890800012
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Title: Non-Isothermal Crystallization Behavior of beta-Nucleated Isotactic Polypropylene/Multi-Walled Carbon Nanotube Composites with Different Melt Structures
Authors: Chen, SH; Liu, YS; He, CC; Yin, XZ; Wang, LX; Wang, H; Xu, CA; Kang, J; Zhang, Y
Author Full Names: Chen, Shaohua; Liu, Yuansen; He, Chenchen; Yin, Xianze; Wang, Luoxin; Wang, Hua; Xu, Changan; Kang, Jian; Zhang, Yi
Source: POLYMER SCIENCE SERIES A, 60 (1):81-89; 10.1134/S0965545X18010029 JAN 2018
Language: English
Abstract: In this study, the melt structure status of isotactic polypropylene/multi-walled carbon nanotubes composites (iPP/MWCNTs) nucleated with beta-NA was tuned by changing the fusion temperature T (f) . The non-isothermal crystallization behavior and subsequent melting behavior of the sample were studied in detail. The results showed that under different cooling rates (2, 5, 10, 20 and 40 deg/min), the crystallization temperature increased gradually with the decrease of T (f) , meanwhile, when T (f) was in the temperature range of 166-174A degrees C where ordered structures survived in the melt (named Region II), the crystallization activation energy was significantly lower compared with the case T (f) > 174A degrees C or T (f) < 166a degrees c. on the subsequent melting curves, the occurrence of the melt structure can be observed at all the cooling rates studied; the location of the region ii was constant, which did not show dependency on the cooling rates; low cooling rate and relative low t (f) within 166-174a degrees c encouraged the formation of more beta-phase triggered by melt structure.
ISSN: 0965-545X
eISSN: 1555-6107
IDS Number: FY6MH
Unique ID: WOS:000426961100006
二、EI 20条
1. Driver reaction time in an internet of vehicles environment
Accession number: 20181204935431
Authors: Cai, Xiaoyu (1, 2); Cai, Ming (3); Zhang, Youjie (4); Wu, Qishun (5)
Author affiliation: (1) School of Traffic and Transportation, Chongqing Jiaotong Univ., No. 66, Xuefu Rd., Chongqing; 400074, China; (2) Chongqing Key Lab of Traffic System and Safety in Mountain Cities, Chongqing Jiaotong Univ., No. 66, Xuefu Rd., Chongqing; 400074, China; (3) School of Traffic and Transportation, Chongqing Jiaotong Univ., No. 66, Xuefu Rd., Chongqing; 400074, China; (4) School of Traffic and Transportation, Chongqing Jiaotong Univ., No. 66, Xuefu Rd., Chongqing; 400074, China; (5) School of Traffic and Transportation, Chongqing Jiaotong Univ., No. 66, Xuefu Rd., Chongqing; 400074, China
Corresponding author: Cai, Xiaoyu(caixiaoyu@cqjtu.edu.cn)
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 812-822
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: To explore the characteristics of driver reaction time in an Internet of vehicles (IOV) environment, a vehicle-to-vehicle platform was established to perform real-world driving tests. The characteristics of the following driver’s reaction time in an IOV were analyzed based on a Gaussian mixture model (GMM). By comparing fitted distribution models of the reaction times with the actual testing data in both traditional and networked vehicle environments, it was found that the GMM was superior to the normal distribution model and lognormal model in the IOV environment. The simple reaction time was reduced by 7.94%, the complex reaction time was reduced by 25.79%, and single lane basic traffic capacity was improved by 15.39% in the IOV environment. Furthermore, the population standard deviation of the driver’s reaction time was reduced by 32.99% and grew more concentrated. The effects of speed on reaction time were not significant in the IOV environment. ? ASCE.
Number of references: 6
Main heading: Vehicles
Controlled terms: Gaussian distribution - Human reaction time - Normal distribution
Uncontrolled terms: Distribution models - Driver reaction time - Gaussian Mixture Model - Intelligent transportation - Internet-of-vehicles - Normal distribution model - Traffic capacity - Vehicle to vehicles
Classification code: 461.4 Ergonomics and Human Factors Engineering
Ergonomics and Human Factors Engineering
- 922.1 Probability Theory
Probability Theory
Numerical data indexing: Percentage 1.54e+01%, Percentage 2.58e+01%, Percentage 3.30e+01%, Percentage 7.94e+00%
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
2. Multiple-group Structural Equation Model of Passenger Satisfaction in Urban Rail Transit
Accession number: 20181204915733
Authors: Chen, Jian (1, 2); Tang, Wei (3, 4); Cai, Xiao-Yu (2); Duan, Li-Wei (2)
Author affiliation: (1) Chongqing Key Lab of Traffic & Transportation, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Traffic and Transportation, Chongqing Jiaotong University, Chongqing; 400074, China; (3) Shenzhen Urban Transport Planning Center Co., Ltd., Shenzhen; Guangdong; 518021, China; (4) Shenzhen Key Lab of Transport Information and Transport Engineering, Shenzhen; Guangdong; 518021, China
Corresponding author: Cai, Xiao-Yu(caixiaoyu@cqjtu.edu.cn)
Source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology
Abbreviated source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi J. Transp. Syst. Eng. Inf. Technol.
Volume: 18
Issue: 1
Issue date: February 1, 2018
Publication year: 2018
Pages: 173-178 and 244
Language: Chinese
ISSN: 10096744
Document type: Journal article (JA)
Publisher: Science Press
Abstract: In order to solve the problem that the influence law of variables could not be described quantitatively because of the lack of interaction among variables in the existing passenger satisfaction model of urban rail transit, the paper uses the structural equation model to construct the passenger satisfaction multiple-group model of urban rail transit, and the path coefficients among the latent variables are quantified and analyzed. Finally, the clustering research is carried out according to the characteristics of the samples. The results show that service quality, corporate image and passenger trust had positive and direct effects on passenger satisfaction, loyalty had indirect effect on satisfaction, and the effect of service quality (0.98), corporate image (0.59), passenger trust (0.52), loyalty (0.03) on satisfaction is decreasing successively. There are obvious differences in the influence mechanism of passenger satisfaction under different gender and different occupations. Copyright ? 2018 by Science Press.
Number of references: 11
Main heading: Light rail transit
Controlled terms: Equivalence classes - Highway engineering - Quality of service
Uncontrolled terms: Latent variable - Satisfaction - Structural equation modeling - Traffic Engineering - Urban rail transit
Classification code: 433.1 Railroad Transportation, General
Railroad Transportation, General
DOI: 10.16097/j.cnki.1009-6744.2018.01.026
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
3. Research on formation mechanism and recognition technology of traffic congestion: Brief review and new development
Accession number: 20181204935154
Authors: Chen, Kequan (1); Liu, Wei (2); Zhang, Liang (3); Zhang, Chiyu (4)
Author affiliation: (1) Traffic Engineering Laboratory, School of Transport, Chongqing Jiaotong Univ., P.O. Box, 400074, China; (2) Traffic Engineering Laboratory, School of Transport, Chongqing Jiaotong Univ., P.O. Box, 400074, China; (3) Traffic Engineering Laboratory, School of Transport, Chongqing Jiaotong Univ., P.O. Box, 400074, China; (4) Traffic Engineering Laboratory, School of Transport, Chongqing Jiaotong Univ., P.O. Box, 400074, China
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 4861-4869
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: An accurate analysis of the traffic congestion formation mechanism is the basis of identifying congestion, formulating a plan to alleviate congestion, and improving traffic network management. In this paper, we review a host of research from the aspects of formation and recognition and analyze a multitude of studies using traffic flow theory, complex network theory, kinetic theory, and traffic engineering theory to explore the formation and regular evolution of congestion. Our research results show that with the rapid development of advanced traveler information systems (ATIS), the formation of traffic congestion lacks exploring for traffic flow dynamic change in the traffic information. Importantly, recognition and prediction need to consider not only the operational characteristics of congestion but also integrate traffic volume composition and the role of the road network. In conclusion, we propose the trend of the development and the direction of our efforts. ? ASCE
Number of references: 29
Main heading: Traffic congestion
Controlled terms: Advanced traveler information systems - Complex networks - Motor transportation - Traffic control
Uncontrolled terms: Congestion formulate - Congestion recognition - Operational characteristics - Traffic Engineering - Traffic flow - Traffic flow dynamics - Traffic flow theory - Traffic network managements
Classification code: 406.1 Highway Systems
Highway Systems
- 722 Computer Systems and Equipment
Computer Systems and Equipment
Funding Details: Number; Sponsor: 201610618053; FPInnovations - Number; Sponsor: cstc2015shms-ztzx30015; Technology Innovation and Development - Number; Acronym; Sponsor: KJ1705136; CSTC; Chongqing Science and Technology Commission
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
4. Coupled heat transfer between air-cooling and cylinder head engine
Accession number: 20181204924986
Authors: Cheng, Du Bao (1, 3); Li, Zhang (1); Zhi, Tang Gang (2); Tao, Deng (2)
Author affiliation: (1) School of Automotive Engineering, Chongqing University, Chongqing; 400044, China; (2) College of Mechatronics and Automotive Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (3) China Automotive Engineering Research Institute Co., Ltd, Chongqing; 401122, China
Source title: EEA - Electrotehnica, Electronica, Automatica
Abbreviated source title: EEA Electrotec. Electron. Autom.
Volume: 66
Issue: 1
Issue date: January 1, 2018
Publication year: 2018
Pages: 147-155
Language: English
ISSN: 15825175
E-ISSN: 2392828X
Document type: Journal article (JA)
Publisher: ICPE Electra Publishing House
Abstract: In order to effectively solve the problem of coupled heat transfer between air cooling and cylinder head when simulating heat transfer of the air-cooled engine, to explore head thermal load of the engine cylinder, the fluid-solid coupling three-dimensional numerical technology was proposed to simulate the process of coupled heat transfer between cylinder head and cold wind. The zero-dimensional combustion model was used for simulating the engine working process in order to obtain the thermal boundary conditions of three-dimensional simulation. The Doppler infrared thermal imaging temperature measuring technology was put forward to measure the thermal distribution of the engine cylinder head. Ultimately, in view of the problem that local temperature of the original cylinder head is on the high side, the cylinder head fin structure was optimized to enhance heat dissipation of the cylinder head and reduce thermal load of the engine. The results show that the simulation result is consistent with the measurement result, with the maximum error of less than 7 %. The fluid-solid coupled three-dimensional numerical simulation technology can reasonably simulate the fluid-solid coupled heat transfer between the cylinder head and the air. Doppler infrared thermal imaging temperature measuring technology can obtain continuous and intuitive data. The original machine cylinder head has the maximum temperature of 400 K and large thermal load. The optimum fin spacing is 4.5-6.5 mm, and the optimum fin thickness is 2.5-4. 5 mm. The optimization scheme enhances heat dissipation through enlarging the fin heat transfer area, and the maximum temperature has dropped 8 K. ? 2018, ICPE Electra Publishing House. All Rights Reserved.
Number of references: 21
Main heading: Cylinder heads
Controlled terms: Air - Computer simulation - Engine cylinders - Engines - Fins (heat exchange) - Heat transfer - Infrared imaging - Internal combustion engines - Numerical models - Temperature measurement - Thermal load
Uncontrolled terms: Coupled heat transfer - Fluid-solid coupling - Infrared thermal imaging - Temperature measuring - Thermal boundary conditions - Thermal distributions - Three dimensional simulations - Three-dimensional numerical simulations
Classification code: 612.1 Internal Combustion Engines, General
Internal Combustion Engines, General
- 612.1.1 Internal Combustion Engine Components
Internal Combustion Engine Components
- 616.1 Heat Exchange Equipment and Components
Heat Exchange Equipment and Components
- 641.2 Heat Transfer
Heat Transfer
- 723.5 Computer Applications
Computer Applications
- 746 Imaging Techniques
Imaging Techniques
- 804 Chemical Products Generally
Chemical Products Generally
- 921 Mathematics
Mathematics
- 944.6 Temperature Measurements
Temperature Measurements
Numerical data indexing: Percentage 7.00e+00%, Size 4.50e-03m to 6.50e-03m, Size 5.00e-03m, Temperature 4.00e+02K, Temperature 8.00e+00K
Funding Details: Number; Acronym; Sponsor: 51175530; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
5. Traffic state detection methods for mountainous cities
Accession number: 20181204936238
Authors: Han, Zhi (1, 2); Wang, Zhenke (3); Zhu, Yong (4)
Author affiliation: (1) Chongqing Jiaotong Univ., Chongqing; 400074, China; (2) China Merchants Chongqing Communications Technology Research, Design Institute Co., Ltd, Chongqing; 400067, China; (3) Chongqing Jiaotong Univ., Chongqing; 400074, China; (4) China Merchants Chongqing Communications Research, Design Institute Co., Ltd., Chongqing; 400067, China
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 850-859
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: The current research related to traffic state detection in mountainous cities faces many challenges. Due to detection requirements, special road network features, and climate characteristics, traffic detection in mountainous areas requires special considerations. A traffic state detection system using unmanned aerial vehicles (UAV) for traffic management optimization has been developed and the parameters have been explored in this research. Based on a derived image information system, a traffic condition detection model for urban road construction, two kinds of highway system architectures, and a suburban integrated traffic information platform a UAV platform is developed. Finally, an approach for solving information challenges is addressed. ? ASCE.
Number of references: 18
Main heading: Aircraft detection
Controlled terms: Antennas - Roads and streets - Street traffic control - Traffic control - Unmanned aerial vehicles (UAV)
Uncontrolled terms: Climate characteristics - Integrated traffic information platform - Mountainous cities - System architectures - Traffic conditions - Traffic detection - Traffic management - Traffic state detection
Classification code: 406.2 Roads and Streets
Roads and Streets
- 652.1 Aircraft, General
Aircraft, General
- 716.2 Radar Systems and Equipment
Radar Systems and Equipment
Funding Details: Number; Acronym; Sponsor: 2014EG124042; BOF; Bijzonder Onderzoeksfonds - Number; Acronym; Sponsor: cstc2015 shms-ztzx30014; CSTC; Chongqing Science and Technology Commission - Number; Acronym; Sponsor: cstc2016shms-ztzx30001; CSTC; Chongqing Science and Technology Commission
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
6. Cascading Failure Simulation of Road Network Based on Prospect Theory
Accession number: 20181204915729
Authors: Liu, Wei (1); Chen, Ke-Quan (1); Liu, Yu-Yin (2); Tian, Zong-Zhong (3)
Author affiliation: (1) School of Transport, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Chongqing Traffic Management Bureau, Chongqing; 400054, China; (3) University of Nevada, Reno; NV; 89557, United States
Corresponding author: Liu, Wei(neway@cqjtu.edu.cn)
Source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology
Abbreviated source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi J. Transp. Syst. Eng. Inf. Technol.
Volume: 18
Issue: 1
Issue date: February 1, 2018
Publication year: 2018
Pages: 145-151
Language: Chinese
ISSN: 10096744
Document type: Journal article (JA)
Publisher: Science Press
Abstract: In order to avoid the large- scale crash of urban traffic network, which caused by traffic accident, cascading failure model which including the behavior of route change and the duration of incident is established. The initial load is identified by the evolution of traffic demand. The duration of failure and lazy loading method are introduced. When facing traffic accident, the subjective factor is considered. Then, based on prospect theory, we determine the dynamic way for redistribution of load. Finally, the solution process of this model by using MSA algorithm is given. The simulation results show that with the increase of failure time, the probability of path change have remarkable difference. Under different failure time and initial demand, the results can be used to quantitative analysis the evolution of cascading failure which caused by section. When direction of road has been considered, once the two direction of road have been failed, the speed of cascading failure will obviously paced up. In conclusion, this paper shed new light on the management of traffic accident. Copyright ? 2018 by Science Press.
Number of references: 16
Main heading: Accidents
Controlled terms: Dynamic loads - Roads and streets - Traffic control
Uncontrolled terms: Cascading failure models - Cascading failures - Loading methods - Prospect theory - Solution process - Traffic demands - Traffic Engineering - Urban traffic networks
Classification code: 406.2 Roads and Streets
Roads and Streets
- 408.1 Structural Design, General
Structural Design, General
- 914.1 Accidents and Accident Prevention
Accidents and Accident Prevention
DOI: 10.16097/j.cnki.1009-6744.2018.01.022
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
7. Driving Behavior Model and Simulation of the Signalized Roundabout Based on Vehicle Trajectory
Accession number: 20181204915721
Authors: Ma, Xin-Lu (1); Guan, Xiao-Dong (1)
Author affiliation: (1) Transportation College, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Ma, Xin-Lu(maxinlu2002@163.com)
Source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology
Abbreviated source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi J. Transp. Syst. Eng. Inf. Technol.
Volume: 18
Issue: 1
Issue date: February 1, 2018
Publication year: 2018
Pages: 96-101
Language: Chinese
ISSN: 10096744
Document type: Journal article (JA)
Publisher: Science Press
Abstract: By analyzing the vehicle trajectory data of the single-approach-entering operation in signalized roundabout, which is obtained by the image recognition, it is found that vehicles’ lane-changing behavior mainly concentrated in the entry and exit area. Based on the analysis of the spatial distribution characteristics and reasons, the driving psychological parameter is introduced and the cellular automaton models for the different areas of the roundabout are established. Numerical simulation results indicate that, due to entrance lane’s construction not channelized, retardation that induced by lane-changing and traffic conflicts is the main factor of traffic congestion in signalized roundabout, and lane-changing motivation and occasion depends on turning ratio and channelization, which has little relevance to the length of entrance’s green time, and given long time may cause traffic flowdensity within roundabout increasing, then the retardation caused by lane-changing, which may block the operation of signalized roundabout, is more difficult to dissipate. Copyright ? 2018 by Science Press.
Number of references: 10
Main heading: Traffic congestion
Controlled terms: Computer simulation - Image recognition - Numerical models - Vehicles
Uncontrolled terms: CA model - Cellular automaton models - Distribution characteristics - Intelligent transportation - Lane-changing behaviors - Retardation - Signalized roundabouts - Vehicle trajectories
Classification code: 723.5 Computer Applications
Computer Applications
- 921 Mathematics
Mathematics
DOI: 10.16097/j.cnki.1009-6744.2018.01.014
Funding Details: Number; Acronym; Sponsor: 61403052; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
8. Model and simulation of bi-directional pedestrian flow self-organization based on cellular automata
Accession number: 20181204935108
Authors: Song, Yongchao (1); Liu, Xueli (1); Yang, Jie (2); Xie, Xiaonian (1)
Author affiliation: (1) Dept. of Traffic and Transportation, Chongqing Jiaotong Univ., P.O. Box 400074, Chongqing, China; (2) Dept. of Transportation and Logistics, Southwest Jiaotong Univ., P.O. Box 610031, Sichuan, China
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 4077-4083
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: In order to consider pedestrian characteristics more comprehensively in the simulation model of bi-directional pedestrian flow, and study the effect of companion behavior on bi-directional pedestrian flow, this paper established a dynamic parameter model considering the behavior of companions by using cellular automata. The model used design parameters of direction, empty, forward, and category to reflect people’s walking characteristics in bi-directional pedestrian flow. Through simulation experiments, this study obtained the final form of self-organization phenomenon with different proportions of companions and the time step of self-organization formed in different groups. The results show that the formation of self-organization behavior requires more time in the presence of more pedestrians, and the number of pedestrian passages eventually formed changed irregularly. ? 2018 American Society of Civil Engineers (ASCE). All rights reserved.
Number of references: 8
Main heading: Cellular automata
Controlled terms: Civil engineering - Transportation
Uncontrolled terms: Design parameters - Different proportions - Dynamic parameters - Group behavior - Model and simulation - Pedestrian flow - Self organizations - Self-organization phenomenon
Classification code: 409 Civil Engineering, General
Civil Engineering, General
- 723 Computer Software, Data Handling and Applications
Computer Software, Data Handling and Applications
- 921 Mathematics
Mathematics
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
9. The decision making of bus entering lane-changing behavior analyzed by back-propagation neural network model
Accession number: 20181204935469
Authors: Xiang, Hongyan (1); Liu, Yueqi (1); Bai, Yunpeng (1)
Author affiliation: (1) Dept. of Traffic and Transportation, Chongqing Jiaotong Univ., P.O. Box 400074, Chongqing, China
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 3496-3505
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: When bus enter a bus stop, it has a mandatory lane-changing behavior which may cause capacity decrease in the upstream road. Firstly, based on the traffic survey, the lane changing location has been analyzed, and the bus entering lane-changing point distribution has been provided. This paper also figures out three main factors that impact buses entering lane changing: the traffic volume, the number of buses, and the bus location. Then, the three factors are used as the input variable to model the back-propagation neural network (BPNN) of which the output is the entering lane-changing point in upstream road. Lastly, the weight product method is used to analyze the sensitivity of those three factors. The result shows that traffic volume and bus location are positively correlated with the lane-changing point. However, there is a negative relationship between the bus number and the point. Furthermore, bus location has the largest sensitivity coefficient with the value being 0.22, and when 20% perturbation is added to the three factors, the sensitivity of bus number grows higher than the other two factors. ? 2018 American Society of Civil Engineers (ASCE). All rights reserved.
Number of references: 20
Main heading: Buses
Controlled terms: Backpropagation - Bus terminals - Bus transportation - Decision making - Location - Neural networks - Roads and streets - Sensitivity analysis - Torsional stress - Traffic surveys
Uncontrolled terms: Back-propagation neural networks - BP neural networks - Bus stop - Input variables - Lane change - Lane-changing behaviors - Public transportation - Sensitivity coefficient
Classification code: 406.2 Roads and Streets
Roads and Streets
- 432.2 Passenger Highway Transportation
Passenger Highway Transportation
- 432.4 Highway Traffic Control
Highway Traffic Control
- 663.1 Heavy Duty Motor Vehicles
Heavy Duty Motor Vehicles
- 723.4 Artificial Intelligence
Artificial Intelligence
- 912.2 Management
Management
- 921 Mathematics
Mathematics
Numerical data indexing: Percentage 2.00e+01%
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
10. Modeling of Driver Behavior on Trajectory-Speed Decision Making in Minor Traffic Roadways With Complex Features
Accession number: 20181204918656
Authors: Xu, Jin (1); Shu, Hai-Bo (2); Shao, Yi-Ming (3)
Author affiliation: (1) College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China (e-mail:sym@cqjtu.edu.cn).; (2) School of Mechanotronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China.; (3) College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China.
Source title: IEEE Transactions on Intelligent Transportation Systems
Abbreviated source title: IEEE Trans. Intell. Transp. Syst.
Issue date: March 14, 2018
Publication year: 2018
Language: English
ISSN: 15249050
Document type: Article in Press
Publisher: Institute of Electrical and Electronics Engineers Inc.
Abstract: The selection of trajectory and speed is a crucial factor in automobile driving behavior. However, almost all the research objects of existing Driver models are developed for driving on city streets and general highways but are not applicable to driving simulations on minor traffic roads with complex shapes, in particular. Therefore, according to the practical automobile driving processes and characteristics in the real world, this paper proposed a trajectory calculation strategy, which we named as ``selecting trajectory point on a preview cross section.’’ According to this strategy, objective functions was established to describe the different selection patterns of ``trajectory and speed’’ of drivers. Constraint expressions were then designed on the basis of the roadway geometry and pavement condition, passenger car performance and ride comfort. A rolling-horizon algorithm for simultaneous solving, i.e., ``target trajectory-target speed,’’ was proposed. Eventually, validations of the proposed model were conducted using a race circuit and a complex mountain road as a simulation example, and the results indicated that the anticipated computational results could be obtained using the proposed decision-making model and algorithm. The result also showed a fairly good agreement with the trajectory and speed of a car on a practical circuit and mountain road. CCBY
Main heading: Trajectories
Controlled terms: Behavioral research - Decision making - Roads and streets - Speed
Uncontrolled terms: Automobile driving behavior - Decision making models - Driver modeling - Driving simulation - Rolling-horizon algorithms - Target speed - Target trajectory - Trajectory calculations
DOI: 10.1109/TITS.2018.2800086
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
11. Modeling drivers’ speed choice on roads with complex shapes based on the curvature of the preview trajectory
Accession number: 20181204916000
Authors: Xu, Jin (1); Zhao, Jun (2); Shao, Yiming (1)
Author affiliation: (1) College of Traffic and Transportation, Chongqing Jiaotong University, China; (2) School of Traffic and Logistics, Southwest JiaoTong University, China
Corresponding author: Shao, Yiming(yhnl_996699@163.com)
Source title: Simulation
Abbreviated source title: Simulation
Issue date: January 1, 2018
Publication year: 2018
Language: English
ISSN: 00375497
E-ISSN: 17413133
CODEN: SIMUA2
Document type: Article in Press
Publisher: SAGE Publications Ltd
Abstract: The target speed needs to be determined based on the geometry of the road ahead and current operational state in order to realize automated driving along complex mountain roads. However, existing speed prediction and V85models are unable to do so. This paper proposes a speed decision algorithm that is based on the curvature of the preview trajectory. Firstly, the trajectory point in each preview cross-section within the driver’s sight window is determined; the curvature of the preview trajectory is calculated and used as input data. Secondly, an objective function is selected to set the speed control pattern: minimum travel time; maximum comfort; minimum deviation from the reference speed; or multiple weighted objectives. Thirdly, the speed value for the preview cross-section is solved by optimizing the selected objective function. As the sight window rolls ahead, the target speed can be determined along the traveling distance. Because the trajectory generated within the boundary of the pavement is used by the driver, parameters such as the change in curve radius, deflection angle, lane width, and spiral length can change the driving boundary, which can change the trajectory characteristics and thus affect the target speed. Therefore, the proposed algorithm is able to determine the speed for roads with complex shapes. The field validation and simulation cases demonstrated that the target speed profile of different driving patterns can be obtained for different combinations of trajectory and speed patterns. Thus, the model can simulate diverse real-world driving behaviors and explain the diversity in driving speeds of different drivers. ? 2018, The Author(s) 2018.
Main heading: Speed
Controlled terms: Behavioral research - Highway traffic control - Roads and streets - Speed control - Traffic control - Trajectories - Travel time
Uncontrolled terms: decisions - Desired speed - Driver modeling - Driving behavior - intelligent driving - Road systems - Target speed
Classification code: 406.1 Highway Systems
Highway Systems
- 406.2 Roads and Streets
Roads and Streets
- 431 Air Transportation
Air Transportation
- 432 Highway Transportation
Highway Transportation
- 432.4 Highway Traffic Control
Highway Traffic Control
- 433 Railroad Transportation
Railroad Transportation
- 434 Waterway Transportation
Waterway Transportation
- 731.3 Specific Variables Control
Specific Variables Control
- 971 Social Sciences
Social Sciences
DOI: 10.1177/0037549717751633
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
12. Effect of horizontal geometric features of road on trajectory and speed of vehicle under driving pattern of curve cutting: A simulation study
Accession number: 20181204935784
Authors: Xu, Jin (1, 2); Lin, Wei (2); Shao, Yi-Ming (2)
Author affiliation: (1) College of Traffic and Transportation, Chongqing Jiaotong Univ., Chongqing, China; (2) Chongqing Key Laboratory of Transportation Engineering, Chongqing Jiaotong Univ., Chongqing, China
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 4267-4283
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: Curve cutting is the most frequent driving pattern observed on rural roads, which can bring two benefits for drivers, i.e., cutting effectiveness: first, to get trajectory flattened and then thus shortened; second, to enable drivers to maintain a higher speed due to the flattened radius. Consequently, drivers’ psychological need for higher traveling speed can be satisfied. However, curve cutting always occurs on the curves having a high level of cutting effectiveness, not on all curves. So, a problem appears, that is, what geometric features do these curves with a high cutting effectiveness have? In this paper, using the “roadway-driver-vehicle” virtual driving system to simulate the driving process when the pattern curve cutting was adopted by the driver, the relationship between cutting effectiveness and geometry features of a horizontal curve such as deflection angle, curve radii, roadway width, spiral length, and horizontal curve length were analyzed. The key geometry features that can significantly affect cutting effectiveness were identified and their critical value was also obtained. Per these findings, designers of highways or race circuits can judge the level of cutting effectiveness of a curve when its geometric parameters were given, and thus can predict the probability of a curve cutting’s appearance. Meanwhile, with a given requirement of cutting effectiveness, the geometric parameters can be determined. ? 2018 American Society of Civil Engineers (ASCE). All rights reserved.
Number of references: 16
Main heading: Curves (road)
Controlled terms: Behavioral research - Geometry - Speed - Trajectories
Uncontrolled terms: Driving behavior - Driving pattern - Horizontal curves - Spiral - Virtual driving
Classification code: 406.2 Roads and Streets
Roads and Streets
- 921 Mathematics
Mathematics
- 971 Social Sciences
Social Sciences
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
13. Vehicle trajectory typologies at curved sections of complex two-lane mountain roads
Accession number: 20181204935153
Authors: Xu, Jin (1); Luo, Xiao (2); Shao, Yiming (1)
Author affiliation: (1) College of Traffic and Transportation, Chongqing Jiaotong Univ., No. 66, XueFu Ave., Chongqing; 400074, China; (2) Hunan CSR Times Electric Vehicle Co. Ltd, Shidai Rd., Zhuzhou, Hunan; 412007, China
Source title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Abbreviated source title: CICTP: Transp. Reform Chang. - Equity, Inclusiveness, Shar., Innov. - Proc. COTA Int. Conf. Transp. Prof.
Volume: 2018-January
Part number: 1 of 1
Issue title: CICTP 2017: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation - Proceedings of the 17th COTA International Conference of Transportation Professionals
Issue date: 2018
Publication year: 2018
Pages: 4230-4238
Language: English
ISBN-13: 9780784480915
Document type: Conference article (CA)
Conference name: 17th COTA International Conference of Transportation Professionals: Transportation Reform and Change - Equity, Inclusiveness, Sharing, and Innovation, CICTP 2017
Conference date: July 7, 2017 - July 9, 2017
Conference location: Shanghai, China
Conference code: 133632
Sponsor: Institute of Transportation Engineers (ITE); Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Transportation Research Board (TRB)
Publisher: American Society of Civil Engineers (ASCE)
Abstract: High-risk driving behaviors and accident-prone road sections can be identified based on the relationship between the trajectory and highway geometry. In the present study, field driving experiments were performed on seven two-lane mountain highways, and vehicle trajectories under natural driving conditions were acquired. Further, the morphological features of the vehicle trajectory and how it is affected by the highway geometry were analyzed. The following were observed: 1) A vehicle approached the inner side, and then the outer side of a curve, and finally returned to its original lane. 2) For curves with medium and small deflection angles, the apex (curve cutting point) of the actual trajectory was ahead of that of the ideal path, and the actual trajectory moved closer to the outer side of the curve when the driver completed the cut. 3) Inertia may cause the vehicle to move too close to the outer side of the curve after a cut, for which reason the driver must correct the trajectory, although overcorrection may move the vehicle into the oncoming lane. 4) The smaller the radius of the horizontal curve, the more frequently the trajectory entered the oncoming lane. And 5), with increasing curve length, the driver may cut the curve a second time. ? 2018 American Society of Civil Engineers (ASCE). All rights reserved.
Number of references: 18
Main heading: Curves (road)
Controlled terms: Highway engineering - Motor transportation - Roads and streets - Trajectories - Vehicles
Uncontrolled terms: Driving behavior - Natural driving - Oncoming lane occupation - Road safety - Vehicle trajectories
Classification code: 406.2 Roads and Streets
Roads and Streets
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
14. Modeling of Operating Mode Distributions and Emission Estimation at Intersection
Accession number: 20181204915731
Authors: Xu, Yao-Fang (1); Yu, Lei (2, 3); Song, Guo-Hua (3)
Author affiliation: (1) Chongqing Jiaotong University, Chongqing; 400074, China; (2) Texas Southern University, Houston; TX; 77004, United States; (3) Beijing Jiaotong University, Beijing; 100044, China
Corresponding author: Xu, Yao-Fang(335339053@qq.com)
Source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology
Abbreviated source title: Jiaotong Yunshu Xitong Gongcheng Yu Xinxi J. Transp. Syst. Eng. Inf. Technol.
Volume: 18
Issue: 1
Issue date: February 1, 2018
Publication year: 2018
Pages: 158-165 and 185
Language: Chinese
ISSN: 10096744
Document type: Journal article (JA)
Publisher: Science Press
Abstract: Since traditional traffic parameters, such as flow and velocity can be easily obtained from road traffic networks, and also the Vehicle Specific Power (VSP)-based approach to calculate vehicle emissions is widely used in the state-of-practice emission models, the modeling results could be used directly in the calculation in emission models, which takes into account the different operation modes of the intersection, thus enabling the dynamic evaluation of emission benefits of traffic networks. Based on the character analysis of the operating mode distribution at intersections, the characteristic parameters of intersection operating modes are identified. Then, the intersection operating mode distribution model is established based on the Partical Swarm Optimization K-Means cluster algorithm. Compared with the real-world data, the errors of the emissions of HC, CO, NOxis 6.08%, 0.80%, 4.18% based on the proposed model, and 38.67%, 28.87%, 12.22% based on MOVES respectively. Copyright ? 2018 by Science Press.
Number of references: 6
Main heading: Engineering
Controlled terms: Civil engineering - Industrial engineering - Transportation
Uncontrolled terms: Average speed - Emission estimation - Operating mode distributions - Operating modes - Partical swarm optimizations - Road traffic network - Urban traffic - Vehicle specific power
Classification code: 409 Civil Engineering, General
Civil Engineering, General
- 912.1 Industrial Engineering
Industrial Engineering
Numerical data indexing: Percentage 1.22e+01%, Percentage 2.89e+01%, Percentage 3.87e+01%, Percentage 4.18e+00%, Percentage 6.08e+00%, Percentage 8.00e-01%
DOI: 10.16097/j.cnki.1009-6744.2018.01.024
Funding Details: Number; Acronym; Sponsor: 51578052; NSFC; National Natural Science Foundation of China
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
15. Synchronization of fractional-order memristor-based complex-valued neural networks with uncertain parameters and time delays
Accession number: 20181204934140
Authors: Yang, Xujun (1); Li, Chuandong (1); Huang, Tingwen (2); Song, Qiankun (3); Huang, Junjian (4)
Author affiliation: (1) Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing; 400715, China; (2) Texas A&M University at Qatar, Doha; 23874, Qatar; (3) College of Mathematics and Statistics, Chongqing Jiaotong University, Chongqing; 400074, China; (4) Department of Computer Science, Chongqing University of Education, Chongqing; 400067, China
Corresponding author: Li, Chuandong(cdli@swu.edu.cn)
Source title: Chaos, Solitons and Fractals
Abbreviated source title: Chaos Solitons Fractals
Volume: 110
Issue date: May 2018
Publication year: 2018
Pages: 105-123
Language: English
ISSN: 09600779
CODEN: CSFOEH
Document type: Journal article (JA)
Publisher: Elsevier Ltd
Abstract: This paper talks about the global asymptotical synchronization problem of delayed fractional-order memristor-based complex-valued neural networks with uncertain parameters. Under the framework of Filippov solution and differential inclusion theory, several sufficient criteria ensuring the global asymptotical synchronization for the addressed drive-response models are derived, by means of Lyapunov direct method and comparison theorem. In addition, two numerical examples are designed to verify the correctness and effectiveness of the theoretical results. ? 2018 Elsevier Ltd
Number of references: 62
Main heading: Uncertainty analysis
Controlled terms: Chaotic systems - Complex networks - Memristors - Synchronization - Time delay
Uncontrolled terms: Comparison theorem - Complex-valued neural networks - Differential inclusions - Fractional order - Lyapunov direct method - Memristor - Synchronization problem - Uncertain parameters
Classification code: 713 Electronic Circuits
Electronic Circuits
- 714.2 Semiconductor Devices and Integrated Circuits
Semiconductor Devices and Integrated Circuits
- 722 Computer Systems and Equipment
Computer Systems and Equipment
- 922.1 Probability Theory
Probability Theory
- 961 Systems Science
Systems Science
DOI: 10.1016/j.chaos.2018.03.016
Funding Details: Number; Acronym; Sponsor: 11501065; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61273021; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61374078; NSFC; National Natural Science Foundation of China - Number; Sponsor: 9-166-1-031; Qatar Foundation
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
16. Global μ-stability of quaternion-valued neural networks with mixed time-varying delays
Accession number: 20181204930427
Authors: You, Xingxing (1); Song, Qiankun (2); Liang, Jing (2); Liu, Yurong (3, 4); Alsaadi, Fuad E. (4)
Author affiliation: (1) School of Economic and Management, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Department of Mathematics, Chongqing Jiaotong University, Chongqing; 400074, China; (3) Department of Mathematics, Yangzhou University, Yangzhou; 225002, China; (4) 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: 290
Issue date: 17 May 2018
Publication year: 2018
Pages: 12-25
Language: English
ISSN: 09252312
E-ISSN: 18728286
CODEN: NRCGEO
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: In this paper, the problem of global μ-stability for quaternion-valued neural networks with time-varying delays and unbounded distributed delays is investigated. To avoid the non-commutativity of quaternion multiplication, the quaternion-valued neural networks is decomposed into two complex-valued systems. By employing the homomorphic mapping principle, a sufficient condition for the existence and uniqueness of equilibrium point of the considered quaternion-valued neural networks is proposed in the form of linear matrix inequality (LMI) in complex-valued domain. Further, the appropriate Lyapunov–Krasovkii functional is constructed in the Hermitian quadratic form, and sufficient condition to ensure the global μ-stability of the equilibrium point is obtained by using inequality technique. Finally, two numerical examples with simulations are provided to verify the effectiveness of the obtained results. ? 2018 Elsevier B.V.
Number of references: 50
Main heading: Time varying networks
Controlled terms: Complex networks - Linear matrix inequalities - Matrix algebra - Number theory - Stability - Time delay - Time varying control systems
Uncontrolled terms: Equilibrium point - Existence and uniqueness - Homomorphic mappings - Inequality techniques - Mixed time-varying delays - Quadratic form - Time varying- delays - Unbounded distributed delays
Classification code: 703.1 Electric Networks
Electric Networks
- 713 Electronic Circuits
Electronic Circuits
- 722 Computer Systems and Equipment
Computer Systems and Equipment
- 731.1 Control Systems
Control Systems
- 921.1 Algebra
Algebra
DOI: 10.1016/j.neucom.2018.02.030
Funding Details: 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
17. Friction characteristics of piston rings in a free-piston engine generator
Accession number: 20181204925179
Authors: Yuan, Chenheng (1); Xu, Jing (1); Feng, Huihua (2); He, Yituan (1)
Author affiliation: (1) College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing, China; (2) School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
Corresponding author: Yuan, Chenheng(yuanchenheng@163.com)
Source title: International Journal of Engine Research
Abbreviated source title: Int. J. Engine Res.
Volume: 18
Issue: 9
Issue date: January 1, 2017
Publication year: 2017
Pages: 871-885
Language: English
ISSN: 14680874
E-ISSN: 20413149
Document type: Journal article (JA)
Publisher: SAGE Publications Ltd
Abstract: Free-piston engine generator is a new alternative to traditional reciprocating engine, which moves without mechanical restriction of crankshaft system. This article investigated numerically the friction characteristics of piston rings in a freepiston diesel engine generator by adopting coupled models of dynamic and friction. The development of the dynamic model and friction model was described, and an iterative calculation method was presented, giving insight into the coupled parameters of these two models. The detailed effects of the dynamic on friction and lubrication were investigated compared with a corresponding traditional crank engine. The friction characteristics of the free-piston engine generator were found to differ clearly from those of the traditional engine due to its special piston motion. Compared with the traditional engine, the minimum lubricant film thickness of piston rings in the free-piston engine generator is thicker and lasts shorter at the dead center regions, but it is generally thinner at other positions. The average friction force, friction power, and friction work of the piston rings in the free-piston engine generator are less than the traditional engine due to the better lubrication in endpoints region. Meanwhile, the friction power of the free-piston engine generator increases with the increase in fuel mass or decrease in load. The friction efficiency varies in correlation with the generator load; the optimum friction efficiency can be obtained by either increasing or decreasing from a certain generator load. ? IMechE 2016.
Number of references: 34
Main heading: Engine pistons
Controlled terms: Crankshafts - Diesel engines - Efficiency - Electric generators - Engines - Free piston engines - Friction - Iterative methods - Lubrication - Piston rings - Pistons - Tribology
Uncontrolled terms: Crankshaft systems - Diesel engine generators - Friction characteristics - Friction modeling - Iterative calculation - Lubricant film thickness - Piston motion - Reciprocating engines
Classification code: 601.2 Machine Components
Machine Components
- 607.2 Lubrication
Lubrication
- 612 Engines
Engines
- 705.2 Electric Generators
Electric Generators
- 913.1 Production Engineering
Production Engineering
- 921.6 Numerical Methods
Numerical Methods
- 931 Classical Physics; Quantum Theory; Relativity
Classical Physics; Quantum Theory; Relativity
DOI: 10.1177/1468087416683076
Funding Details: Number; Acronym; Sponsor: 15JDKJC-A011; CQU; Chongqing University - Number; Acronym; Sponsor: 51305472; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: cstc2016jcyjA0221; CSTC; Chongqing Science and Technology Commission
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
18. Highway geometric design for mountainous regions considering the vehicle-road coupling factors
Accession number: 20181204933584
Authors: Yue, Lei (1); Du, Yuchuan (2); Yao, Hongyun (3)
Author affiliation: (1) Key Laboratory of Road and Traffic Engineering, Ministry of Education at Tongji Univ., Shanghai; 201804, China; (2) Key Laboratory of Road and Traffic Engineering, Ministry of Education at Tongji Univ., Shanghai; 201804, China; (3) College of Traffic and Transportation, Chongqing Jiaotong Univ., Chongqing; 400074, China
Source title: Transportation Research Congress 2016: Innovations in Transportation Research Infrastructure - Proceedings of the Transportation Research Congress 2016
Abbreviated source title: Transp. Res. Congr.: Innov. Transp. Res. Infrastruct. - Proc. Transp. Res. Congr.
Volume: 2018-January
Part number: 1 of 1
Issue title: Transportation Research Congress 2016: Innovations in Transportation Research Infrastructure - Proceedings of the Transportation Research Congress 2016
Issue date: 2018
Publication year: 2018
Pages: 420-429
Language: English
ISBN-13: 9780784481240
Document type: Conference article (CA)
Conference name: Transportation Research Congress 2016: Innovations in Transportation Research Infrastructure
Conference date: June 6, 2016 - June 8, 2016
Conference location: Beijing, China
Conference code: 134232
Sponsor: Chang’An University; China Research Institute of Highway; et al.; Harbin Institute of Technology; Southeast University; Tongji University
Publisher: American Society of Civil Engineers (ASCE)
Abstract: High grades and sharp curves are the major features for highway geometry in mountainous regions. Excessive lateral stress, which is associated with rollover, may occur at sharp curves. Therefore, understanding the relationship between speed and curve radius is necessary to recommend suitable ranges of curve radius in terms of speed limit. In this paper, the safety model was developed based on vehicle-road coupling principles. The model, which considers two critical scenarios, including sideslip and rollover, was validated by software simulation. The recommended values for curves in mountainous region were provided based on both simulation and theoretical results. The results may also provide reference for the mountainous highway geometry design. ? ASCE.
Number of references: 15
Main heading: Highway planning
Controlled terms: Computer software - Couplings - Curves (road) - Geometry - Highway engineering - Roads and streets - Vehicles
Uncontrolled terms: Coupling factor - Geometry designs - Highway geometric design - Mountainous highway - Mountainous regions - Recommended values - Safety modeling - Software simulation
Classification code: 406.2 Roads and Streets
Roads and Streets
- 432.1 Highway Transportation, General
Highway Transportation, General
- 723 Computer Software, Data Handling and Applications
Computer Software, Data Handling and Applications
- 921 Mathematics
Mathematics
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
19. A physical model experiment for investigating into temperature redistribution in surrounding rock of permafrost tunnel
Accession number: 20181204922318
Authors: Zhang, Xuefu (1); Zhou, Zihan (1); Li, Junqi (1); Zhou, Yuanfu (1); Han, Fenglei (1)
Author affiliation: (1) State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering, College of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author: Zhou, Yuanfu(zhouyf-666@163.com)
Source title: Cold Regions Science and Technology
Abbreviated source title: Cold Reg. Sci. Technol.
Volume: 151
Issue date: July 2018
Publication year: 2018
Pages: 47-52
Language: English
ISSN: 0165232X
CODEN: CRSTDL
Document type: Journal article (JA)
Publisher: Elsevier B.V.
Abstract: The temperature distribution is one of the most important issues which should be considered in permafrost tunnel design. In order to investigate the influence of temperature disturbance caused by construction and boundary temperature on temperature distribution of surrounding rock in permafrost tunnel, a physical model experiment had been completed. A heater was working for half an hour to simulate the heat which was from construction. Both the inner face of tunnel and model top were exposed to air of test box. The results showed that the boundary conditions were successfully set up. The non-uniform force would act on support structure of tunnel because there were not uniform temperature distributions near the tunnel. The temperature distributions near the tunnel also would be affected by the temperature of ground surface if there is an enough small buried depth. In addition, the heat should be prevented to store in surrounding rock. Speeding up construction and installing reasonable insulation layer may be the effective methods. The results would contribute to understand frost damages mechanism and provide help for permafrost tunnel researches and design. ? 2018 Elsevier B.V.
Number of references: 13
Main heading: Tunnels
Controlled terms: Permafrost - Temperature distribution
Uncontrolled terms: Boundary temperature - Ground surfaces - Insulation layers - Physical model experiments - Support structures - Surrounding rock - Temperature disturbance - Thermal disturbance
Classification code: 401.2 Tunnels and Tunneling
Tunnels and Tunneling
- 641.1 Thermodynamics
Thermodynamics
DOI: 10.1016/j.coldregions.2018.03.007
Funding Details: Number; Acronym; Sponsor: 51708070; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: cstc2017jcyjAX0056; CSTC; Chongqing Science and Technology Commission - Number; Acronym; Sponsor: cstc2017jcyjAX0156; CSTC; Chongqing Science and Technology Commission - Number; Acronym; Sponsor: cstc2017shmsA30021; CSTC; Chongqing Science and Technology Commission - Number; Sponsor: KJ1705144; Chongqing Municipal Education Commission - Number; Sponsor: KJZH17120; Chongqing Municipal Education Commission
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
20. A pH and magnetic dual-response hydrogel for synergistic chemo-magnetic hyperthermia tumor therapy
Accession number: 20181204924976
Authors: Zhou, Xiaohan (1); Wang, Longchen (2); Xu, Yanjun (2); Du, Wenxian (3); Cai, Xiaojun (2); Wang, Fengjuan (1); Ling, Yi (2); Chen, Hangrong (3); Wang, Zhigang (1); Hu, Bing (2); Zheng, Yuanyi (1, 2)
Author affiliation: (1) Chongqing Key Laboratory of Ultrasound Molecular Imaging, State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing, Ministry of Science and Technology, Second Affiliated Hospital, Chongqing Medical University, Chongqing; 400010, China; (2) Shanghai Jiao Tong University, Affiliated Sixth People’s Hospital, Shanghai; 200233, China; (3) State Key Laboratory of High Performance Ceramic and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
Corresponding author: Hu, Bing
Source title: RSC Advances
Abbreviated source title: RSC Adv.
Volume: 8
Issue: 18
Issue date: 2018
Publication year: 2018
Pages: 9812-9821
Language: English
E-ISSN: 20462069
CODEN: RSCACL
Document type: Journal article (JA)
Publisher: Royal Society of Chemistry
Abstract: To overcome the toxicity of chemotherapy, increasing attention has been paid to local drug delivery systems (DDSs). pH-Sensitive hydrogels have emerged as promising DDS materials in the biomedical field due to their remarkable characteristics. However, the pH environment in tumor varies from person to person, which makes the applicability of systems based on pH challenging. In this study, we developed a contractible hydroxypropyl methyl cellulose (HPMC)/Fe3O4hydrogel with dual-response pH and magnetic properties aiming to overcome the limitations of pH-sensitive hydrogel drug delivery systems and further increase their efficiency in tumor therapy. The HPMC/Fe3O4hydrogel could act as a drug delivery system that combines pH-sensitive triggering and magnetic dual-response drug release for synergistic chemo-magnetic hyperthermia therapy. The drug delivery profile of the HPMC/Fe3O4/doxorubicin hydrochloride (DOX) hydrogel was determined in vitro and revealed a remarkable pH-sensitive performance. After synergistic chemo-magnetic hyperthermia treatment, mice with 4T1 breast cancer xenografts recovered without any recurrence or metastasis, demonstrating the synergistic effect of chemotherapy and magnetic hyperthermia therapy. Meanwhile, reduced toxicity and superior anticancer effects were achieved due to the combined effect of the pH and magnetic hyperthermia response properties. This study demonstrated the high efficacy and low toxicity of the improved design of HPMC/Fe3O4for drug delivery, which may provide a promising approach for the application of chemo-magnetic hyperthermia cancer therapy. ? 2018 The Royal Society of Chemistry.
Number of references: 52
Main heading: Drug delivery
Controlled terms: Chemotherapy - Controlled drug delivery - Diseases - Drug therapy - Hydrogels - Hyperthermia therapy - Magnetic after effect - Magnetism - pH sensors - Targeted drug delivery - Toxicity - Tumors
Uncontrolled terms: Breast cancer xenografts - Drug delivery system - Hydroxypropyl methyl cellulose - Local drug delivery - Magnetic hyperthermia - pH-sensitive hydrogel - Response properties - Synergistic effect
Classification code: 461 Bioengineering and Biology
Bioengineering and Biology
- 701.2 Magnetism: Basic Concepts and Phenomena
Magnetism: Basic Concepts and Phenomena
- 801.1 Chemistry, General
Chemistry, General
- 804 Chemical Products Generally
Chemical Products Generally
DOI: 10.1039/c8ra00215k
Compendex references: YES
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
三、ISTP 12条
*Record 1 of 12. Search terms matched: CHONGQING 400074(2); CHONGQING JIAOTONG(2)
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Title: The Experimental Study on Inland Electric Propulsion Cruise Maneuverability
Authors: Zhao, T; Zhang, R; Zhang, SY; Zhao, K
Author Full Names: Zhao, Teng; Zhang, Rong; Zhang, Shi-yi; Zhao, Ke
Book Group Author(s): Destech Publicat Inc
Source: 2ND INTERNATIONAL CONFERENCE ON APPLIED MECHANICS, ELECTRONICS AND MECHATRONICS ENGINEERING (AMEME), 92-96; 2017
Book Series: DEStech Transactions on Engineering and Technology Research
Language: English
Abstract: Through the Century myth of the electric propulsion ship trial experiment was carried out, respectively for the type of ship's turning performance, braking performance, and steady performance are analyzed in aspects of research, through comparing with other ways with traditional propulsion ship, according to the results above all aspects of performance is superior to the traditional ship propulsion mode. Excellent maneuverability and airworthiness, the ship for the research and development of green ships in inland water provides the research direction and development train of thought. At the same time, the type of ship's sea trial test for inland river ships new revision of the specification provides a reliable and objective data, the new specification and standard come on stage has played a great role in promoting.
ISSN: 2475-885X
ISBN: 978-1-60595-497-4
IDS Number: BJ6XO
Unique ID: WOS:000426975600017
*Record 2 of 12. Search terms matched: CHONGQING JIAOTONG(2)
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Title: Study on Complex Wind Field Characteristics of Mountainous City Bridge Site
Authors: Chen, Y; Wang, CQ; He, ZY; Tang, XH
Author Full Names: Chen, Yi; Wang, Cheng-qi; He, Ze-yu; Tang, Xiao-hui
Book Group Author(s): Destech Publicat Inc
Source: 2ND INTERNATIONAL CONFERENCE ON APPLIED MECHANICS, ELECTRONICS AND MECHATRONICS ENGINEERING (AMEME), 413-417; 2017
Book Series: DEStech Transactions on Engineering and Technology Research
Language: English
Abstract: This paper takes chaotianmen yangtze grand bridge as the engineering background, With the help of computational fluid dynamics commercial software fluent, the complex wind field in the bridge site area of mountain city is simulated and analyzed, By comparing the results of wind tunnel test data and theoretical calculation, the characteristics of near surface fluid movement in complex terrain and bridge site are revealed. The relationship between fluctuating wind speed and power spectrum of bridge site simulated by superposition of harmonic method and AR linear filtering method. Research shows that the numerical simulation of the average wind speed in complex mountainous cities has a high precision, Compared with the application of superposition of harmonic method, AR linear filtering method is more suitable for engineering application.
ISSN: 2475-885X
ISBN: 978-1-60595-497-4
IDS Number: BJ6XO
Unique ID: WOS:000426975600074
*Record 3 of 12. Search terms matched: CHONGQING 400074(1); CHONGQING JIAOTONG(1)
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Title: Triaxial Test on Clay with Vertical Reinforcement
Authors: Nie, Y; Li, YJ; Hu, FH; Wang, T; Zhao, XF; Zhao, NY
Author Full Names: Nie, Ying; Li, Yanjun; Hu, Fenghan; Wang, Tao; Zhao, Xiaofeng; Zhao, Ningyu
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 494-500; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: A unconsolidated-undrained triaxial test of vertically reinforced clay was carried out. Fiberglass geogrid was used as reinforced material in the form of centrally symmetrical arrangement. The stress-strain relationship, strength characteristics and failure modes of reinforced clay were studied. The effects of different reinforced diameters, different height of vertical bars and different confining pressures on the strength of reinforced clay were discussed. The results showed that the vertical reinforcement has played a role in the performance of the reinforcement from the beginning and greatly improved the shear strength of the soil. The installation of the vertical reinforcement has a significant effect on the reinforcement effect, and there is an optimal form of reinforcement.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400094
*Record 4 of 12. Search terms matched: CHONGQING 400074(1); CHONGQING JIAOTONG(1)
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Title: Research On The Buttress-Warehouse Retaining Wall Based On Centrifugal Model Test
Authors: Nie, Y; Ling, XP; Hu, FH; Zhang, QS; Zhao, XF; Liang, B
Author Full Names: Nie, Ying; Ling, Xuepeng; Hu, Fenghan; Zhang, Qingsong; Zhao, Xiaofeng; Liang, Bo
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 501-506; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: The buttress-warehouse retaining wall is the combination of buttress retaining wall and warehouse retaining wall. In this paper, with different widths of buttress, the wall's soil pressure and deformation characteristics have been discussed in geotechnical centrifuge model experiment. The results show that 1. the vertical plate's soil pressure is less than the Coulomb active soil pressure; 2. the vertical deformation of the filling (settlement) is greater than the horizontal;3. the wall is inclined outward rotation around the buttress plane.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400095
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Title: Analysis on Stability of Three-dimensional High Cutting Slope based on Finite Element Strength Reduction Method
Authors: Wu, LM; Wang, ZJ; Gao, R; Wang, SC; Hu, JP
Author Full Names: Wu, Liming; Wang, Zijian; Gao, Rong; Wang, Sichang; Hu, Jinpeng
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 1374-1378; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: Stability of high cutting slope concerns safety pass of road at the bottom of slope and has relationship with security and stability of buildings on the top of slope. On the basis of ANSYS finite element strength reduction method, this paper does elastoplastic nonlinear and large deformation geometric nonlinear analysis on slope. In terms of three-dimensional deformation of space, this paper utilizes Drucker -Prager elastoplastic model in finite element analysis and uses full N-R in large deformation analysis. Analyses on three-dimensional homogeneous high cutting slope show that three-dimensional slope model established through finite element strength reduction method could visually simulate the process of slope becoming unstable with increasing of reduction coefficient, in which better safety coefficient of slope could also be acquired. The utilization of strength reduction method in analyzing slope stability not only overcomes assumed slide of limit equilibrium method but also intuitively acquires sliding tendency and practical plastic sliding area of slope, which provides effective way for stability analysis on high cutting slope after excavation.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400249
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Title: Early Warning Evaluation of Ecological Security in the Three Gorges reservoir area, China
Authors: Zeng, YX; Guan, DJ; Zhang, MJ; Zhou, J
Author Full Names: Zeng YiXiao; Guan DongJie; Zhang MengJie; Zhou Jian
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 1849-1852; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: According to the characteristics of Three Gorges reservoir ecosystem in Chongqing of China, the index for potential capacity of ecological environment is amended for early warning evaluating the ecological security in 22 counties of the Three Gorges reservoir. Capacity of ecological environment was ranked into five levels, e.g., urgent warning, heavy warning, middle warning, light warning, and no warning. The results demonstrated that the development situation of ecological security in the Three Gorges reservoir was not balanced; meanwhile, there remained the serious ecological deterioration in some regions, indicating that the polarization phenomenon was greatly serious our results suggest that some applicable strategies should be proposed for optimized development.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400334
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Title: Dynamic Simulation of Urban Sustainable Development Based on SD Model
Authors: Guan, DJ; Chen, T; Zhou, LL; Zhou, J
Author Full Names: Guan DongJie; Chen Ting; Zhou LiLei; Zhou Jian
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 1853-1857; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: The coordinated development of Economy-Resources-Environment (ERE) is a key component of sustainable development. Based on the connotation and framework of sustainable development of urban ERE, this paper employs the theory and methodology of System Dynamics (SD) to elucidate the economic growth constrained from urban resource depletion and environmental degradation. Herein, resource, environment, and technology subsystems are combined with economy subsystem into a Cobb-Douglas production. Meanwhile, five scenarios, named current, resources, environment, technology and economy, are designed to compare the simulation results, so that the effects of different scenarios on the urban ERE can be emphasized. The results demonstrate that the current development of Chongqing is unsustainable, and the optimization of any one subsystem cannot realize the sustainable development. It turns out that the transformation of the economic development mode is the only way to sustainable development in Chongqing, and feasible transformation ways of the economic development mode have been put forward.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400335
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Title: Research on the Bond-anchorage Behavior of HRB500 Bundled Bars
Authors: Liu, QW; Tang, B; Bhattarai, S; Gao, CH
Author Full Names: Liu Qing-wen; Tang Bin; Bhattarai, Subesh; Gao Cheng-hui
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 1498-1501; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: The pullout experiments of 9 HRB500 bond-anchorage specimens are carried out. The influence of the quantity of bundled bars, anchorage length on the bond-anchorage behavior of HRB500 bundled bars is comparatively analysed. The load slip curve of bundled bar is obtained, and the bond-anchoring mechanism between steel bar and concrete is analysed. Studies show that there are two failure patterns of HRB500 bundled bar which are pull-out failure and splitting failure. Average bond-anchoring strength decrease with increasing of number of steel bars and anchorage length.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400272
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Title: Influences of Strength Parameters' Polymorphic Distribution on Instability Probability of Slope Based on M-C Method
Authors: Liu, Y; Zhao, NY; Chen, K
Author Full Names: Liu, Yi; Zhao, Ningyu; Chen, Kai
Edited by: Jiang ZY
Source: PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017), 120 487-493; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: The conventional landslide calculation is obtaining a specific stability safety factor by using limit equilibrium method or strength reduction method based on the given strength parameters of soil. Although the M-C(Monte-Carlo) method provides a path to predict instability probability of landslide, in the traditional application of M-C to calculate the probability of landslide failure, the value c, phi of soils are considered to obey normal distribution. In fact, the value c, phi obeys various distribution under different kinds of cases. This paper discussed the calculation of landslide failure probability of soil parameters under different distribution types. The results show that the instability probability calculated under the form of normal distribution which the value of c, phi obeyed is lower than that under the logarithm normal distribution. The proposed method can improved the calculation accuracy of instability probability of landslide and had certain reference value for the calculation of the landslide instability probability.
ISSN: 2352-5401
ISBN: 978-94-6252-453-8
IDS Number: BJ6LN
Unique ID: WOS:000426813400093
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Title: Effects of the Flow Field and Wavemaking Resistance on the Lateral Distributions of the Trimaran
Authors: Zhao, T; Zhang, R; Zhang, SY; Zhao, K
Author Full Names: Zhao, Teng; Zhang, Rong; Zhang, Shi-yi; Zhao, Ke
Book Group Author(s): Destech Publicat Inc
Source: 2017 2ND INTERNATIONAL CONFERENCE ON COMPUTATIONAL MODELING, SIMULATION AND APPLIED MATHEMATICS (CMSAM), 258-262; 2017
Book Series: DEStech Transactions on Computer Science and Engineering
Language: English
Abstract: We studied the trimaran model by using Fluent to simulate the viscous flow field on different lateral distributions. Through studying the impact of the change of lateral distributions surface dynamic force, the results show that the change on distributions has a major effect on wavemaking at the midship and the stern. In comparative analysis of the resistance in different distributions, it is pointed out that a rational layout of the transverse space in a certain range has a positive effect on the resistance performance of the trimaran. The Layout of the lateral parts in front has a relative positive effect on the resistance performance in low speed while that in back is beneficial for the improving the resistance performance in high speed, and further giving out the best layout of the trimaran in different speed.
ISSN: 2475-8841
ISBN: 978-1-60595-499-8
IDS Number: BJ6TF
Unique ID: WOS:000426947400042
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Title: Study on Buckling Failure Criterion for Compression-shear Sliding Unstable Rock
Authors: Zhang, JH; Chen, HK; Wang, H; Wu, RJ
Author Full Names: Zhang, Jinhao; Chen, Hongkai; Wang, He; Wu, Renjie
Edited by: Rojas AL; Maouche AR; Fellah M
Source: PROCEEDINGS OF THE 4TH ANNUAL INTERNATIONAL CONFERENCE ON MATERIAL ENGINEERING AND APPLICATION (ICMEA 2017), 146 297-302; 2017
Book Series: AER-Advances in Engineering Research
Language: English
Abstract: The essence of failure for compression-shear sliding unstable rock belongs to the fracture of dominant fissure. The fracture mechanics model of compression shear type dangerous rock is established by combining rock failure criterion with fracture strength factor; By equivalent stress method, the equivalent stress field of the non-parallel section of the main control surface is obtained; The failure criterion of compression shear type dangerous rock is derived by using the classical D-P failure theory.
ISSN: 2352-5401
ISBN: 978-94-6252-448-4
IDS Number: BJ6IA
Unique ID: WOS:000426703000068
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Title: Study on Vibration of Heavy-Precision Robot Cantilever Based on Time-varying Glowworm Swarm Optimization Algorithm
Authors: Luo, TH; Liang, S; Miao, CB
Author Full Names: Luo, T. H.; Liang, S.; Miao, C. B.
Book Group Author(s): IOP
Source: 3RD INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING AND AUTOMATION SCIENCE (ICMEAS 2017), 280 10.1088/1757-899X/280/1/012003 2017
Book Series: IOP Conference Series-Materials Science and Engineering
Language: English
Abstract: A method of terminal vibration analysis based on Time-varying Glowworm Swarm Optimization algorithm is proposed in order to solve the problem that terminal vibration of the large flexible robot cantilever under heavy load precision. The robot cantilever of the ballastless track is used as the research target and the natural parameters of the flexible cantilever such as the natural frequency, the load impact and the axial deformation is considered. Taking into account the change of the minimum distance between the glowworm individuals, the terminal vibration response and adaptability could meet. According to the Boltzmann selection mechanism, the dynamic parameters in the motion simulation process are determined, while the influence of the natural frequency and the load impact as well as the axial deformation on the terminal vibration is studied. The method is effective and stable, which is of great theoretical basis for the study of vibration control of flexible cantilever terminal.
ISSN: 1757-8981
Article Number: UNSP 012003
IDS Number: BJ6JS
Unique ID: WOS:000426773700003
