2018年9月5日收录更新SSCI 2条、SCI 25条、 ISTP7条、EI 23条-重庆交通大学图书馆

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2018年9月5日收录更新SSCI 2条、SCI 25条、 ISTP7条、EI 23条: 作者：重庆交通大学图书馆发表于：2018-09-05 10:34:23

SSCI 2条

Title: Analyzing Coastal Wetland Degradation and its Key Restoration Technologies in the Coastal Area of Jiangsu, China

Authors: Cui, LL; Li, GS; Ouyang, NL; Mu, FY; Yan, F; Zhang, YT; Huang, XY

Author Full Names: Cui, Linlin; Li, Guosheng; Ouyang, Ninglei; Mu, Fengyun; Yan, Fu; Zhang, Youtian; Huang, Xiaoyang

Source: WETLANDS, 38 (3):525-537; 10.1007/s13157-018-0997-6 JUN 2018

Language: English

Abstract: Coastal wetland degradation severely affects ecological balance and economic and social sustainability. Ecological restoration of degraded wetlands is crucial in research on wetland degradation. A common problem with previous studies is that they use the same tactics and technologies over the whole study area, taking little account of the spatial heterogeneity of wetland degradation. This study focuses on the spatial heterogeneity of wetland degradation, and proposes the goals and technologies for wetland restoration by examining the main issues and causes of the degradation of coastal wetlands in Jiangsu, China. Habitat loss and absolute loss are the dominant forms of degradation in Jiangsu, followed by the existence of invasive species and gradual loss. Land reclamation and invasive species are the primary causes of the degradation of coastal wetlands. Appropriate technologies and engineering approaches are also proposed for the ecological restoration and reconstruction of degraded coastal wetlands against these degradation characteristics. They include the promotion of siltation in native wetlands, vegetation recovery, functional recovery of constructed wetlands, and prevention of invasive species.

ISSN: 0277-5212

eISSN: 1943-6246

IDS Number: GL7UE

Unique ID: WOS:000437409800010

Dynamic assessment and forecast of urban water ecological footprint based on exponential smoothing analysis

Authors:Su, Y; Gao, WJ; Guan, DJ; Su, WC

JOURNAL OF CLEANER PRODUCTION

Volume: 195 Pages: 354-364 Published: SEP 10 2018 Language: English Document type: Article

DOI:10.1016/j.jclepro.2018.05.184

Abstract:

Water resources are essential for production and life of human beings, as well as urban economy and social development. At present, shortage of water resource has been emerging one of the urgent problems that many cities in China are facing due to rapid urbanization. In this work, water ecological footprint method has been applied to demonstrate how the sustainable utilization of water resources can be realized. According to the basic principle and calculation model of water ecological footprint, the water ecological footprint (WEF) and water ecological carrying capacity (WEC) in a period of 2004-2015 in Beijing, Shanghai, Tianjin, and Chongqing were analyzed. Then, the water ecological footprints per capita were predicted with the quadratic exponential smoothing in 2020 and 2025, respectively. The results show that the total WEF in these cities except for Shanghai increased from 2004 to 2015. The productive WEF was the primary consumption account in the total WEF accounts of the four cities. In 2015, the productive WEF5 of Beijing, Shanghai, Tianjin, and Chongqing accounted for 54.46%, 82.61%, 75.04%, and 80.03% of total WEF amounts, respectively. At the same time, the proportion of the WEF of tertiary industry in Beijing was as high as 50.14% in the productive WEF accounts. The biggest proportion of the WEF of secondary industry was 59.14% and 53.14% in Shanghai and Chongqing, respectively. In Tianjin, the WEF of primary industry was the biggest proportion, accounting for 65.03%. In terms of the WEF per capita, we also found that the water ecological surplus per capita for Tianjin occurred only in 2012 indicating serious water ecological deficit in the other years. While the water ecological deficit per capita occurred in Shanghai before 2014 and exited in Beijing in the whole study period, which suggested that water resource utilization was not sustainable. However, the WEC per capita in Chongqing was bigger than the WEF per capita during 2004-2015, contributing to the water ecological surplus per capita in Chongqing. That is to say, the sustainable utilization of water resources in Chongqing was rational. It is evidenced that such changes of the total WEF are closely related to the productive WEE. We thus suggest that the productive structure associated with the distribution of water resources in different cities should be manipulated towards improving the WEC, reducing the WEF and fix regional water imbalance for further promoting the sustainable development of the overall socio-economy. (C) 2018 Elsevier Ltd. All rights reserved.

SCI 25条

Title: Adsorption of phenol from aqueous solutions using interlayer modified titanate nanotubes

Authors: Hu, LH; Zhang, JX; Li, N; Zhang, SD; Chen, F; Ji, B; Li, HF; Wang, ZY

Author Full Names: Hu, Lihe; Zhang, Jixiang; Li, Nian; Zhang, Shudong; Chen, Fa; Ji, Bo; Li, Haifeng; Wang, Zhenyang

Source: JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 93 (8):2208-2215; 10.1002/jctb.5562 AUG 2018

Language: English

Abstract: BACKGROUNDLayered titanate nanostructures have long been studied as efficient adsorbents for different kinds of pollutants such as heavy metals and dye cations. As to the electro-neutral and anionic organic pollutants, titanates show relatively low adsorption capacity due to a negatively charged surface and lack of organophilic affinity. This research focuses on the interlayer modification of titanate nanotubes for adsorption of this kind of organic pollutants. Phenol was chosen as a representative target. RESULTSTwo surfactants, hexadecyl trimethyl ammonium bromide (HTAB) and dodecyl dimethyl benzyl ammonium bromide (DDBAB), were chosen as organic modifier for the interlayer modification. Detailed characterization proved that surfactant molecules were intercalated into the interlayer and surface properties of titanates were successfully modified. Adsorption behavior of phenol was then systematically investigated. Results show that DDBAB modified titanates are efficient phenol adsorbents, possessing better performance than HTAB modified titanates. The high adsorption capacity is attributed to the special structure of titanates and the affinity between phenyl groups in DDBAB and phenol. Subsequently, thermally induced phase change of spent adsorbents led to complete regeneration. CONCLUSIONInterlayer modified titanate nanotubes were efficient phenol adsorbents with a maximum adsorption capacity of 226.24 mg g(-1). Complete regeneration of spent adsorbents was also achieved. (c) 2018 Society of Chemical Industry

ISSN: 0268-2575

eISSN: 1097-4660

IDS Number: GL1NO

Unique ID: WOS:000436870200017

Title: On the dynamics of one-prey-n-predator impulsive reaction-diffusion predator-prey system with ratio-dependent functional response

Authors: Liu, ZJ; Zhang, L; Bi, P; Pang, JH; Li, B; Fang, CL

Author Full Names: Liu, Zijian; Zhang, Lei; Bi, Ping; Pang, Jianhua; Li, Bing; Fang, Chengling

Source: JOURNAL OF BIOLOGICAL DYNAMICS, 12 (1):551-576; 10.1080/17513758.2018.1485974 JUL 2 2018

Language: English

Abstract: In this paper, a one-prey-n-predator impulsive reaction-diffusion periodic predator-prey system with ratio-dependent functional response is investigated. On the basis of the upper and lower solution method and comparison theory of differential equation, sufficient conditions on the ultimate boundedness and permanence of the predator-prey system are established. By constructing an appropriate auxiliary function, the conditions for the existence of a unique globally stable positive periodic solution are also obtained. Examples and numerical simulations are presented to verify the feasibility of our results. A discussion is conducted at the end.

ISSN: 1751-3758

eISSN: 1751-3766

IDS Number: GL2RK

Unique ID: WOS:000436971400001

PubMed ID: 29962293

Title: Iterative learning scheme to design intermittent fault estimators for nonlinear systems with parameter uncertainties and measurement noise

Authors: Feng, L; Xu, SQ; Chai, Y; Yang, ZM; Zhang, K

Author Full Names: Feng, Li; Xu, Shuiqing; Chai, Yi; Yang, Zhimin; Zhang, Ke

Source: INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, 32 (7):994-1009; 10.1002/acs.2880 JUL 2018

Language: English

Abstract: In this paper, an iterative learning estimator is proposed to deal with period intermittent fault estimation problem in a class of nonlinear uncertain systems. First, state observer is designed for state reconstruction, followed by the Lyapunov function is presented to guarantee the convergence of the system output. Then, the iterative learning scheme-based fault estimator is presented to track the fault signal and the optimal function is established to ensure tracking error convergence. Moreover, linear matrix inequalities and Schur complements are utilized to obtain the sufficient conditions for the existence of iterative learning estimator. Compared with the existing results, error augmented systems should not satisfy the strictly positive realness assumption. Besides, previous state estimation error is used for current fault estimation such that to improve the estimating accuracy. Finally, 2 numerical examples are given to illustrate the effectiveness and validity of the proposed methods.

ISSN: 0890-6327

eISSN: 1099-1115

IDS Number: GL4JH

Unique ID: WOS:000437116400003

Title: Effects of the second phase on the microstructure and ablation resistance o HfC coating on C/C composites

Authors: Ren, JC; Zhang, YL; Fu, YQ; Zhang, PF; Tian, S; Zhang, LL

Author Full Names: Ren, Jincui; Zhang, Yulei; Fu, Yanqin; Zhang, Pengfei; Tian, Song; Zhang, Leilei

Source: SURFACE & COATINGS TECHNOLOGY, 344 250-258; 10.1016/j.surfcoat.2018.03.023 JUN 25 2018

Language: English

Abstract: To improve the ablation resistance of HfC coating on carbon/carbon composites prepared by supersonic atmospheric plasma spraying, SiC, TaC and ZrC ceramics were added into HfC coating as the second phase. Effects of the second phase on the microstructure, interface bonding strength and ablation resistance of HfC coating were researched. The structure of HfC-SiC coating was denser and smoother than that of HfC-TaC and HfC-ZrC coatings. The dense structure, high interface bonding strength and formation of continuous Hf-Si-O glassy film resulted in the better ablation resistance of HfC-SiC coating. During ablation, the HfC-TaC coating was oxidized to a stable Hf6Ta2O17 glassy film, which could restrain the oxygen penetration. A porous HfO2-ZrO2 layer was generated on the HfC-ZrC coating after ablation, some HfO2 and ZrO2 particles may be flown away by the high-speed flame. So, the ablation resistance of HfC-ZrC coating was worse than the other two coatings.

ISSN: 0257-8972

IDS Number: GL7ON

Unique ID: WOS:000437391300029

Title: Analyzing Coastal Wetland Degradation and its Key Restoration Technologies in the Coastal Area of Jiangsu, China

Authors: Cui, LL; Li, GS; Ouyang, NL; Mu, FY; Yan, F; Zhang, YT; Huang, XY

Author Full Names: Cui, Linlin; Li, Guosheng; Ouyang, Ninglei; Mu, Fengyun; Yan, Fu; Zhang, Youtian; Huang, Xiaoyang

Source: WETLANDS, 38 (3):525-537; 10.1007/s13157-018-0997-6 JUN 2018

Language: English

ISSN: 0277-5212

eISSN: 1943-6246

IDS Number: GL7UE

Unique ID: WOS:000437409800010

Title: An experimental analysis of the aerodynamic characteristics of a high-speed train on a bridge under crosswinds

Authors: Wang, M; Li, XZ; Xiao, J; Zou, QY; Sha, HQ

Author Full Names: Wang, Ming; Li, Xiao-Zhen; Xiao, Jun; Zou, Qi-Yang; Sha, Hai-Qing

Source: JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 177 92-100; 10.1016/j.jweia.2018.03.021 JUN 2018

Language: English

Abstract: The aerodynamic characteristics of a train on a bridge under crosswinds are studied by using a wind tunnel. The tests performed measure the aerodynamic forces associated with the model train running inside a truss bridge for different incoming wind velocities, wind angles, and train speeds. For a deeper analysis of the shielding effect of the truss bridge on the train body under crosswinds, a dynamic mesh method is adopted to establish a three-dimensional computational fluid dynamics model. Then the pressure distribution on the surface of the train was analyzed. The results show that the aerodynamic coefficients of the train measured with an equivalent static train model are different to those measured with the dynamic train model. Due to the shielding effect of the truss bridge, the relationships between the aerodynamic coefficients and the yaw angle change with different incoming wind velocities and wind angles. The impact of the train speed on the aerodynamic characteristics is mainly related to changes in the train-induced wind. It leads to the relationship curves between the aerodynamic coefficients and the yaw angle obtained by adjusting the train speed are very different to those by changing the incoming wind velocity and wind angle.

ISSN: 0167-6105

eISSN: 1872-8197

IDS Number: GL1RS

Unique ID: WOS:000436885800008

Title: Heating Characteristics and Induced Healing Efficiencies of Asphalt Mixture via Induction and Microwave Heating

Authors: Liu, QT; Chen, C; Li, B; Sun, YH; Li, HC

Author Full Names: Liu, Quantao; Chen, Cheng; Li, Bin; Sun, Yihan; Li, Hechuan

Source: MATERIALS, 11 (6):10.3390/ma11060913 JUN 2018

Language: English

Abstract: This paper investigates the heating characteristics and induced healing efficiencies of asphalt mixture containing steel fiber under induction heating and microwave heating. The heating characteristics of an asphalt mixture with different heating methods were studied with an infrared camera. The healing performance of the asphalt mixture specimens in different healing conditions were investigated by observing the crack closure and testing the fracture resistance recovery after healing. The results showed that the heating speed at the surface of asphalt mixture with induction heating was much higher than that with microwave machine heating, under a similar output power and the same method of radiation. While the temperature distribution within the asphalt mixture under induction heating was quite uneven, microwave heating resulted in a more uniform temperature distribution. The effective heating depth of microwave heating is much higher than that of induction heating. Gradient healing occurred within the sample heated with induction healing, while a uniform healing effect can be achieved with microwave heating.

ISSN: 1996-1944

Article Number: 913

IDS Number: GK8TE

Unique ID: WOS:000436500300046

PubMed ID: 29843480

Title: Nonlinear Bond Model for the Dowel Action considering the Fatigue Damage Effect

Authors: Li, PF; Tan, N; Wang, CZ

Author Full Names: Li, Pengfei; Tan, Ni; Wang, Chengzhi

Source: ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 10.1155/2018/9690202 2018

Language: English

Abstract: To investigate the mechanical properties of dowel action under fatigue loads, 3 reinforced concrete specimens with different bar diameters (12 mm, 20 mm, and 25 mm) were subjected to the fatigue loading and were designed to investigate the attenuation characlcr of dowel action and the fatigue failure modes. The load transfer mcchanism of the bond was analyzed based on the 3D relative motions between reinforcing bars and subgrade concrete. Fatigue damage effects were considered in the model. A deterioration coefficient based on the deformation path was defined to represent the accumulation of fatigue damage. Verification of the model was conducted by comparing the analysis results with experimental data obtained in this study and from the literature, and satisfactory agreement was obtained.

ISSN: 1687-8434

eISSN: 1687-8442

Article Number: 9690202

IDS Number: GL4LN

Unique ID: WOS:000437123200001

Title: Evaluation of Self-Healing Performance of Asphalt Concrete for Low-Temperature Fracture Using Semicircular Bending Test

Authors: Fan, SP; Wang, H; Zhu, HZ; Sun, W

Author Full Names: Fan, Shiping; Wang, Hao; Zhu, Hongzhou; Sun, Wei

Source: JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 30 (9):10.1061/(ASCE)MT.1943-5533.0002426 SEP 2018

Language: English

Abstract: This study aims to evaluate fracture resistance and self-healing performance of asphalt concrete at low temperatures using a semicircular bending (SCB) test. Three asphalt mixtures with different types of asphalt binder were used. The applied load and crack opening tip displacement (CTOD) were measured to calculate fracture energy and the critical release rate of fracture energy (J-integral). The self-healing indexes (HIs) were defined as the ratios of fracture energy, peak load, and J-integral obtained before and after healing, respectively. The self-healing performance of asphalt mixture was investigated considering different healing temperatures, healing time, and initial crack lengths (notch depths). The results showed that the styrene-butadiene-styrene (SBS) modified asphalt mixture possessed the highest fracture resistance, as compared to the asphalt mixture modified by rubber compound and the asphalt mixture with conventional 70# asphalt binder. The self-healing ability of the asphalt mixture increased with the increase of healing temperature and healing time; while it decreased with the increase of notch length. The optimum healing temperature was determined to be 60 degrees C at the same healing time of 8h, whereas the optimum healing time was found to be complicated depending on mixture type. Each asphalt mixture exhibited different healing abilities, depending on healing temperature, healing time, and the performance indicator of healing index.

ISSN: 0899-1561

eISSN: 1943-5533

Article Number: 04018218

IDS Number: GN9RH

Unique ID: WOS:000439543900027

Title: Investigation of rheological and chemical properties asphalt binder rejuvenated with waste vegetable oil

Authors: Cao, XX; Wang, H; Cao, XJ; Sun, W; Zhu, HZ; Tang, BM

Author Full Names: Cao, Xinxin; Wang, Hao; Cao, Xuejuan; Sun, Wei; Zhu, Hongzhou; Tang, Boming

Source: CONSTRUCTION AND BUILDING MATERIALS, 180 455-463; 10.1016/j.conbuildmat.2018.06.001 AUG 20 2018

Language: English

Abstract: To improve the performance of asphalt mixture with high content of reclaimed asphalt pavement (RAP), rejuvenator is usually added. The traditional rejuvenator is non-renewable and contains large amount of carcinogenic polycyclic aromatic hydrocarbons. In this study, the effects of waste vegetable oil (W-oil) on rejuvenating aged asphalt binder were investigated in terms of rheological and chemical properties. The viscosity, complex shear modulus, and fatigue life were measured using Rotational Viscometer (RV) and Dynamic Shear Rheometer (DSR). The chemical properties were characterized by Gel Permeation Chromatography (GPC) and Fourier Transform Infrared Spectroscopy (FTIR). The experimental results indicated that the workability and fatigue resistance of aged asphalt were improved by addition of W-oil. The logarithm values of viscosity of rejuvenated asphalt at specific temperature showed linear relationship with the dosage of W-oil. The fatigue life of rejuvenated asphalt increased exponentially as the dosage of W-oil increased. There was no chemical reaction found between W-oil and aged asphalt. With the increasing content of W-oil, sulfoxide index (I-S=O) and the large molecule size (LMS) content decreased due to physical dilution. Besides, the workability and fatigue resistance of rejuvenated asphalt were found having close correlations with sulfoxide index and the LMS content. (C) 2018 Elsevier Ltd. All rights reserved.

ISSN: 0950-0618

eISSN: 1879-0526

IDS Number: GN9QH

Unique ID: WOS:000439538500044

Title: Painleve-Kuratowski stability of approximate efficient solutions for perturbed semi-infinite vector optimization problems

Authors: Peng, ZY; Li, XB; Long, XJ; Fan, XD

Author Full Names: Peng, Z. Y.; Li, X. B.; Long, X. J.; Fan, X. D.

Source: OPTIMIZATION LETTERS, 12 (6):1339-1356; SI 10.1007/s11590-017-1175-0 AUG 2018

Language: English

Abstract: This paper is concerned with the stability of semi-infinite vector optimization problems (SIVOP) under functional perturbations of both objective functions and constraint sets. First, we establish the Berge-lower semicontinuity and Painlev,-Kuratowski convergence of the constraint set mapping. Then, using the obtained results, we obtain sufficient conditions of Painlev,-Kuratowski stability for approximate efficient solution mapping and approximate weakly efficient solution mapping to the (SIVOP). Furthermore, an application to the traffic network equilibrium problems is also given.

ISSN: 1862-4472

eISSN: 1862-4480

IDS Number: GO6JX

Unique ID: WOS:000440148400013

Title: Characterizations of robust solution set of convex programs with uncertain data

Authors: Li, XB; Wang, S

Author Full Names: Li, Xiao-Bing; Wang, Song

Source: OPTIMIZATION LETTERS, 12 (6):1387-1402; SI 10.1007/s11590-017-1187-9 AUG 2018

Language: English

Abstract: In this paper, we study convex programming problems with data uncertainty in both the objective function and the constraints. Under the framework of robust optimization, we employ a robust regularity condition, which is much weaker than the ones in the open literature, to establish various properties and characterizations of the set of all robust optimal solutions of the problems. These are expressed in term of subgradients, Lagrange multipliers and epigraphs of conjugate functions. We also present illustrative examples to show the significances of our theoretical results.

ISSN: 1862-4472

eISSN: 1862-4480

IDS Number: GO6JX

Unique ID: WOS:000440148400016

Title: Effect of hydrogen addition on the combustion and emission of a diesel free-piston engine

Authors: Yuan, CH; Han, CJ; Liu, Y; He, YT; Shao, YM; Jian, XC

Author Full Names: Yuan, Chenheng; Han, Cuijie; Liu, Yang; He, Yituan; Shao, Yiming; Jian, Xiaochun

Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 43 (29):13583-13593; 10.1016/j.ijhydene.2018.05.038 JUL 19 2018

Language: English

Abstract: The free-piston engine (FPE) is a new crankless engine, which operates with variable compression ratio, flexible fuel applicability and low pollution potential. A numerical model which couples with dynamic, combustion and gas exchange was established and verified by experiment to simulate the effects of different hydrogen addition on the combustion and emission of a diesel FPE. Results indicate that a small amount of hydrogen addition has a little effect on the combustion process of the FPE. However, when the ratio of hydrogen addition (R-H2) is more than 0.1, the R-H2 gives a positive effect on the peak in cylinder gas pressure, temperature, and nitric oxide emission of the FPE, while soot emission decreases with the increase of hydrogen addition. Moreover, the larger R-H2 induces a longer ignition delay, shorter rapid combustion period, weaker post-combustion effect, greater heat release rate, and earlier peak heat release rate for the FPE. Nevertheless, the released heat in rapid combustion period is significantly enhanced by the increase of R-H2. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

ISSN: 0360-3199

eISSN: 1879-3487

IDS Number: GN8IK

Unique ID: WOS:000439402900059

Title: Evaluation of Water Resource Security Based on an MIV-BP Model in a Karst Area

Authors: Liu, LY; Guan, DJ; Yang, QW

Author Full Names: Liu, Liying; Guan, Dongjie; Yang, Qingwei

Source: WATER, 10 (6):10.3390/w10060786 JUN 2018

Language: English

Abstract: Evaluation of water resource security deserves particular attention in water resource planning and management. A typical karst area in Guizhou Province, China, was used as the research area in this paper. First, based on data from Guizhou Province for the past 10 years, the mean impact value-back propagation (MIV-BP) model was used to analyze the factors influencing water resource security in the karst area. Second, 18 indices involving five aspects, water environment subsystem, social subsystem, economic subsystem, ecological subsystem, and human subsystem, were selected to establish an evaluation index of water resource security. Finally, a BP artificial neural network model was constructed to evaluate the water resource security of Guizhou Province from 2005 to 2014. The results show that water resource security in Guizhou, which was at a moderate warning level from 2005 to 2009 and a critical safety level from 2010 to 2014, has generally improved. Groundwater supply ratio, industrial water utilization rate, water use efficiency, per capita grain production, and water yield modulus were the obstacles to water resource security. Driving factors were comprehensive utilization rate of industrial solid waste, qualifying rate of industrial wastewater, above moderate rocky desertification area ratio, water requirement per unit gross domestic product (GDP), and degree of development and utilization of groundwater. Our results provide useful suggestions on the management of water resource security in Guizhou Province and a valuable reference for water resource research.

ISSN: 2073-4441

Article Number: 786

IDS Number: GK8XL

Unique ID: WOS:000436515100117

Title: Investigation on Possibility of Waste Vegetable Oil Rejuvenating Aged Asphalt

Authors: Cao, XX; Cao, XJ; Tang, BM; Wang, YY; Li, XL

Author Full Names: Cao Xinxin; Cao Xuejuan; Tang Boming; Wang Yuanyuan; Li Xiaolong

Source: APPLIED SCIENCES-BASEL, 8 (5):10.3390/app8050765 MAY 2018

Language: English

Abstract: In order to guarantee the service performance of recycling asphalt mixture with reclaimed asphalt pavement (RAP), asphalt rejuvenator shall be added. In the last five years, vegetable oil-based rejuvenators have received more and more attention due to their green and regenerative advantages. The object of this paper is to investigate the feasibility of rejuvenating aged asphalt by a kind of waste vegetable oil (W-oil). The effect of W-oil on the performance of aged asphalt is characterized by a safety property test, aging property test, and pavement performance tests; the pavement performance tests included traditional tests and a rheological test. The results show that both the safety property and aging property of rejuvenated asphalt with W-oil meet the specification requirements. According to the results of traditional performance indexes (i.e., penetration, soften point, and ductility), the pavement performance of rejuvenated asphalt can be recovered to the level of virgin asphalt. According to the results of performance indices obtained from the rheological test, the optimum dosage of W-oil is determined to be 13.4 wt %. Compared with virgin asphalt, the rutting property of rejuvenated asphalt is equivalent to that of virgin asphalt, and the workability is slightly poorer; however, the fatigue property and low temperature property have been significantly enhanced. W-oil cannot only improve the pavement performance of aged asphalt, it can also guarantee good safety property and aging property. Therefore, W-oil is of great potential to serve as an asphalt rejuvenator for rejuvenating aged asphalt.

ISSN: 2076-3417

Article Number: 765

IDS Number: GL6UD

Unique ID: WOS:000437326800112

Title: Experimental and Numerical Study of Fatigue Damage Assessment under Combined High and Low Cycle Loading

Authors: Han, CS; Qu, XQ; Ma, YL; Shi, DX

Author Full Names: Han, Chaoshuai; Qu, Xianqiang; Ma, Yongliang; Shi, Dexin

Source: SHOCK AND VIBRATION, 10.1155/2018/9045658 2018

Language: English

Abstract: This paper studies fatigue damage under combined high and low cycle loading. The interaction of two types of loading will greatly reduce fatigue life of structures. Existing methods usually neglect the minor high cycle loading, which obviously underestimates the total fatigue damage. To solve this problem, four methods are proposed and extended for the case of combined loading. Numerical simulations based on the superposition of two sine waves are performed. Experiments are carried out using "DH36" smooth round-type specimens. Damage predictions results by four methods are compared to the experimental results. It is concluded that some methods give satisfactory fatigue damage estimations and can be regarded as a safe design tool in engineering application.

ISSN: 1070-9622

eISSN: 1875-9203

Article Number: 9045658

IDS Number: GO2SO

Unique ID: WOS:000439827200001

Study on thermal management of rectangular Li-ion battery with serpentine-channel cold plate

Authors:Deng, T; Zhang, GD; Ran, Y

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER

Volume: 125 Pages: 143-152 Published: OCT 2018 Language: English Document type: Article

DOI:10.1016/j.ijheatmasstransfer.2018.04.065

Abstract:

In order to investigate a simple and efficient liquid cooling method for the rectangular Li-ion power batteries used in electric vehicles, the cold plate with serpentine-channel configuration shaped like U-tube is established. Subsequently, the effect of cooling channel number, the layout of channels and inlet temperature of coolant on cooling performance of battery thermal management system are analyzed. The numerical simulation results demonstrate that the layout of channels in length flowing-direction with 5-channels has the most efficient cooling performance. This design can reduce the maximum temperature by 26 degrees C compared with the 2-channels along width flowing direction. And the maximum temperature of cooling system rises with the increase of inlet temperature of the coolant. However, there exists an upper limit on the number of channels and the inlet temperature with the consideration of efficiency and safety of cooling system. The above results will be helpful to design cold plate for thermal management system of Li-ion power batteries. (C) 2018 Elsevier Ltd. All rights reserved.

Dynamic assessment and forecast of urban water ecological footprint based on exponential smoothing analysis

Authors:Su, Y; Gao, WJ; Guan, DJ; Su, WC

JOURNAL OF CLEANER PRODUCTION

Volume: 195 Pages: 354-364 Published: SEP 10 2018 Language: English Document type: Article

DOI:10.1016/j.jclepro.2018.05.184

Abstract:

Oxidation resistance of SiC nanowires reinforced SiC coating prepared by a CVD process on SiC-coated C/C composites

Authors:Qiang, XF; Li, HJ; Zhang, N; Liu, YF; Tian, S

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY

Volume: 15 Issue: 5 Pages: 1100-1109 Published: SEP-OCT 2018 Language: English Document type: Article

DOI:10.1111/ijac.12893

Abstract:

Oxidation protective SiC nanowires-reinforced SiC (SiCNWs-SiC) coating was prepared on pack cementation (PC) SiC-coated carbon/carbon (C/C) composites by a simple chemical vapor deposition (CVD) process. This double-layer SiCNWs-SiC/PC SiC-coating system on C/C composites not only has the advantages of SiC buffer layer but also has the toughening effects of SiCNWs. The microstructure and phase composition of the nanowires and the coatings were examined by SEM, TEM, and XRD. The single-crystalline -SiC nanowires with twins and stacking faults were deposited uniformly and oriented randomly with diameter of 50-200nm and length ranging from several to tens micrometers. The dense SiCNWs-SiC coating with some closed pores was obtained by SiC nanocrystals stacked tightly with each other on the surface of SiCNWs. After introducing SiCNWs in the coating system, the oxidation resistance is effectively improved. The oxidation test results showed that the weight loss of the SiCNWs-SiC/PC SiC-coated samples was 4.91% and 1.61% after oxidation at 1073K for 8hours and at 1473K for 276hours, respectively. No matter oxidation at which temperature, the SiCNWs-SiC/PC SiC-coating system has better anti-oxidation property than the single-layer PC SiC coating or the double-layer CVD SiC/PC SiC coating without SiCNWs.

Electronic Properties of Armchair Nanoribbons with Stacking Faults: First-Principles Calculations

Authors:Xu, WW; Wang, JW; Laref, A; Yang, J; Wu, XZ; Wang, R

JOURNAL OF ELECTRONIC MATERIALS

Volume: 47 Issue: 9 Pages: 5498-5508 Published: SEP 2018 Language: English Document type: Article

DOI:10.1007/s11664-018-6445-9

Abstract:

The band structures and partial charge densities of armchair with and without stacking fault have been investigated using first-principles calculations. The band gaps of with periodically arranged stacking fault increase with the decreasing of stacking fault density and converge to 0.27 eV, which is smaller than perfect (1.76 eV). For nanoribbons with stacking fault, the band gap increases for ribbon width and decreases slightly for The band gaps are smaller than that of nanoribbons without stacking fault. The partial charge densities of armchair nanoribbons with stacking fault are also presented. Results indicate that the defect levels originate from the stacking fault and are located in the forbidden band near the Fermi level. Therefore, the band gaps can be decreased by stacking fault.

Reliability analysis of hydrologic containment of underground storage of liquefied petroleum gas

Authors:Gao, X; Yan, EC; Yeh, TCJ; Wang, YL; Liang, Y; Hao, YH

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY

Volume: 79 Pages: 12-26 Published: SEP 2018 Language: English Document type: Article

DOI:10.1016/j.tust.2018.04.037

Abstract:

The objectives of this paper are (1) to introduce a numerical first order method to calculate the gas containment reliability within a heterogeneous, two-dimensional, unlined rock caverns (URCs), and (2) to suggest a strategy for improving the gas containment reliability. In order to achieve these goals, we first analyzed the spatial variability of saturated hydraulic conductivity (K-s) at a field site. We then conducted deterministic simulations to demonstrate the importance of heterogeneity of K-s in the analysis of gas tightness performance of URCs. Considering the uncertainty of the heterogeneity in the real world situations, we subsequently developed a numerical first order method (NFOM) to determine the gas tightness reliability at crucial locations of URCs. Using the NFOM, the effect of spatial variability of K-s on gas tightness reliability was investigated. Results show that as variance or spatial structure anisotropy of K(s )increases, most of the gas tightness reliability at crucial locations reduces. Meanwhile, we compare the results of NFOM with those of Monte Carlo simulation, and we find the accuracy of NFOM is mainly affected by the magnitude of the variance of K-s. At last, for improving gas containment reliability at crucial locations at this study site, we suggest that vertical water-curtain holes should be installed in the pillar rather than increasing density of horizontal water-curtain boreholes.

Singularly Perturbed Fractional Schrodinger Equation Involving a General Critical Nonlinearity

Authors:Jin, H; Liu, WB; Zhang, JJ

ADVANCED NONLINEAR STUDIES

Volume: 18 Issue: 3 Pages: 487-499 Published: AUG 2018 Language: English Document type: Article

DOI:10.1515/ans-2018-2015

Abstract:

In this paper, we are concerned with the existence and concentration phenomena of solutions for the following singularly perturbed fractional Schrodinger problem: epsilon(2s)(-Delta)(s)u + V(x)u = f(u) in R-N, where N > 2s and the nonlinearity f has critical growth. By using the variational approach, we construct a localized bound-state solution concentrating around an isolated component of the positive minimum point of V as epsilon -> 0. Our result improves the study made in [X. He and W. Zou, Existence and concentration result for the fractional Schrodinger equations with critical nonlinearities, Calc. Var. Partial Differential Equations 55 (2016), no. 4, Article ID 91], in the sense that, in the present paper, the Ambrosetti-Rabinowitz condition and the monotonicity condition on f(t)/t are not required.

CORROSION DETECTION OF BRIDGE REINFORCED CONCRETE WITH INDUCTION HEATING AND INFRARED THERMOGRAPHY

Authors:Liu, L; Zheng, D; Zhou, JT; He, J; Xin, JZ; Cao, YP

INTERNATIONAL JOURNAL OF ROBOTICS & AUTOMATION

Volume: 33 Issue: 4 Pages: 379-385 Published: 2018 Language: English Document type: Article

DOI:10.2316/Journal.206.2018.4.206-5085

Abstract:

In this paper, a novel method for non-destructive detection of steel corrosion in bridge reinforced concrete is proposed with induction heating and infrared thermography. Steel rebar and reinforced concrete specimens were fabricated with different corrosion levels through an accelerated corrosion process. Corroded and non-corroded steel rebar and reinforced concrete specimen were heated by an indirect contacted inductive heater, and an infrared camera was applied to measure temperature distribution and change at the concrete surface. The experimental results show that the temperature rise in the corroded rebar is higher than that in the non-corroded rebar, and the difference is greater when the corrosion degree is greater. This study provided a new possible way for non-destructive detection of corrosion in reinforced concrete bridges.

A Human-Robot Interaction Based Coordination Control Method for Assistive Walking Devices and an Assessment of Its Stability

Authors:Zhang, X; Ge, WL; Fu, H; Chen, RX; Luo, TH; Hashimoto, M

MATHEMATICAL PROBLEMS IN ENGINEERING

Published: 2018 Language: English Document type: Article

DOI:10.1155/2018/9279627

Abstract:

A biologically inspired motion control method is introduced to ameliorate the flexibility and multijoint autonomy of assistive walking devices based on human-robot interactions (HRIs). A new IIRI-based coordination control system consisting of a hip central pattern generator (CPG) control, a knee hierarchical impedance control, and a hip-knee linkage control is also investigated. Simulations and walking experiments are carried out which demonstrate that (i) the self-oscillation and external communication characteristics of the CPG are capable of realizing ideal master/slave hip joint trajectories. In addition, symmetrical inhibition in the CPG unit is essential for maintaining the antiphase motion of the left and right hip joints. (ii) High and low hierarchical impedance control laws allow appropriate knee joint torque to be calculated to maintain posture during the support and swing phases as walking proceeds. (iii) A hip-knee joint linkage mechanism which incorporates a hip joint CPG control and knee joint impedance control allows natural and relevant hip-knee trajectories to be realized. The stability of the HRI-based coordination control method is also confirmed using Lyapunov stability theory.

Oblivious Transfer Based on NTRUEncrypt

Authors:Mi, B; Huang, DR; Wan, SH; Mi, LB; Cao, JQ

IEEE ACCESS

Volume: 6 Pages: 35283-35291 Published: 2018 Language: English Document type: Article

DOI:10.1109/ACCESS.2018.2846798

Abstract:

Oblivious transfer (OT) is the most fundamental process in cryptosystems and serves as the basic building block for implementing protocols, such as the secure multi-party computation and the fair electronic contract. However, since most implementations of the Internet of Things are time-sensitive, existing works that are based on traditional public cryptosystems are not efficient or secure under quantum machine attacks. In this paper, we argued that the fastest known 1-out-of-n oblivious transfer (OTn1) protocol, which was proposed by Chou, cannot achieve semantic security and is time-consuming due to exponent arithmetic of large parameters. Utilizing NTRUEncrypt and OT extension, we devised a one-round post-quantum secure OTn1 protocol that is also proved to be active and adaptively secure under the universal composability framework. Compared with Chou's protocol, the computational overheads of our scheme are approximately 6 and 1.7 times smaller on the sender and receiver sides, in line with the standard security level.

ISTP 7 条

Title: Painleve-Kuratowski stability of approximate efficient solutions for perturbed semi-infinite vector optimization problems

Authors: Peng, ZY; Li, XB; Long, XJ; Fan, XD

Author Full Names: Peng, Z. Y.; Li, X. B.; Long, X. J.; Fan, X. D.

Source: OPTIMIZATION LETTERS, 12 (6):1339-1356; SI 10.1007/s11590-017-1175-0 AUG 2018

Language: English

ISSN: 1862-4472

eISSN: 1862-4480

IDS Number: GO6JX

Unique ID: WOS:000440148400013

Title: Characterizations of robust solution set of convex programs with uncertain data

Authors: Li, XB; Wang, S

Author Full Names: Li, Xiao-Bing; Wang, Song

Source: OPTIMIZATION LETTERS, 12 (6):1387-1402; SI 10.1007/s11590-017-1187-9 AUG 2018

Language: English

ISSN: 1862-4472

eISSN: 1862-4480

IDS Number: GO6JX

Unique ID: WOS:000440148400016

Title: The research on effect of purple soil enzyme activities by biogas slurry recirculation at large-scale farms

Authors: Du, BH; Yu, WW; Yang, L; Zhu, JY; Wan, QL; Yuan, SC

Author Full Names: Du, Banghao; Yu, Weiwei; Yang, Lun; Zhu, Jiayue; Wan, Qiaoling; Yuan, Shaochun

Book Group Author(s): IOP

Source: 2ND INTERNATIONAL CONFERENCE ON MATERIALS SCIENCE, ENERGY TECHNOLOGY AND ENVIRONMENTAL ENGINEERING (MSETEE 2017), 81 10.1088/1755-1315/81/1/0120042017

Book Series: IOP Conference Series-Earth and Environmental Science

Language: English

Abstract: Soil enzyme plays an important role in converting soil nutrient, improving soil fertility and enhancing agricultural products quality. In this paper, the effect of purple soil enzyme activities was investigated by different biogas slurry (BS) recirculation load and period at large-scale farm in southwest China. The results indicated that the value of soil enzyme activities all increased by different BS recirculation load and period comparing to control check group. Its value was at high level by low BS recirculation load and long BS recirculation period. Soil urease and invertase activity reached highest value by T-4 (7 m(3) center dot hm(-2)) and T-8d (8 d), respectively. The value of soil catalase activity was highest by T-1 (40 m(3) center dot hm(-2)) and T-10d (10 d). In addition, soil phosphatase activity got peak value by T-4 (7 m(3) center dot hm(-2)) and T-4d (4 d). The effect of purple soil enzyme activities by BS recirculation at large-scale farms was explored to provide the theoretical basis for utilizing biogas slurry rationally.

ISSN: 1755-1307

Article Number: UNSP 012004

IDS Number: BK5PO

Unique ID: WOS:000439412700004

Title: Temporal and spatial characteristics of water resources in the Yeerqiang River Basin based on remote sensing

Authors: Ran, QY; Bai, LY; Feng, JZ; Yang, YM; Guo, MQ; Li, HL; Zhang, Q; Zhang, P; Cao, D

Author Full Names: Ran, Q. Y.; Bai, L. Y.; Feng, J. Z.; Yang, Y. M.; Guo, M. Q.; Li, H. L.; Zhang, Q.; Zhang, P.; Cao, D.

Edited by: Fu B; Jia L; Sun J; Li X; Shi P

Source: 3RD INTERNATIONAL SYMPOSIUM ON EARTH OBSERVATION FOR ARID AND SEMI-ARID ENVIRONMENTS (ISEO2016), 74 10.1088/1755-1315/74/1/012020 2017

Book Series: IOP Conference Series-Earth and Environmental Science

Language: English

Abstract: Surface water resources play an important role in the economic and social developments as well as the protection of natural ecological environment in the Yeerqiang River Basin. Based upon the six stages of land use data from 1990 to 2015, the temporal and spatial variation of surface water resources in the Yerqiang River Basin have been explored and analyzed. The results show that: (1) From 1990 to 2015, the area of natural landscape initially increased and then decreased, while the area of artificial landscape increased, which caused a slight increase in the land use degree in the study area. (2) The dynamic changes of water and glacier areas are somewhat consistent over the past 25 years, with a sharp decline between 2005-2010 and a small increase in the remaining years. The dynamic changes in areas of non-glacial water were moderate, with decrease in area of 9 km2 from 1990 to 2015. The beach area decreased, and the other water sub-classes initially increased and then decreased. (3) Over the past 25 years, the proportion of unchanged water area is 73.22%, the transfer-out proportion is 19.19%, and the transfer-in proportion is 7.59%. Generally, water types transferred to grassland and unused land. Additionally, significant transfers were observed for the conversions between glaciers and woodland, conversions between canal, lake, reservoir and beach, and conversions between beach and farmland.

ISSN: 1755-1307

Article Number: UNSP 012020

IDS Number: BK5PH

Unique ID: WOS:000439409200020

Vibration Waveform Classification and Fault Diagnosis of Railway Train Based on Fractal Dimension and Nearest Neighbor Clustering

Authors:He, YQ; Chen, XJ; Wang, YL; Long, X; Cai, J

Edited By: TallonBallesteros AJ; Li K

FUZZY SYSTEMS AND DATA MINING III (FSDM 2017)

Book Series: Frontiers in Artificial Intelligence and Applications

Volume: 299 Pages: 135-142 Published: 2017 Language: English Document type: Proceedings Paper

DOI:10.3233/978-1-61499-828-0-135

Abstract:

In this paper, we propose an approach for fault diagnosis of railway train based on a combination of fractal theory and k-mean clustering technique. First, the fractal dimensions of the waveforms were calculated to analysis the singular characteristics of the waveforms. Second, the k-mean clustering was used to cluster the singular characteristics in order to determine the running state and fault diagnosis. It can effectively monitor the running state and safety performance of the railway train, and provides technical support for the safe operation and maintenance of the railway train. The method has the advantages of strong real-time and high accuracy for fault classification, which has a certain reference value for analysis of uncertainty and irregular waveform.

Exponential Stability of Neutral T-S Fuzzy Neural Networks with Impulses

Authors:Long, SJ; Li, B

Edited By: Cong F; Leung A; Wei Q

ADVANCES IN NEURAL NETWORKS, PT II

Book Series: Lecture Notes in Computer Science

Volume: 10262 Pages: 66-74 Published: 2017 Language: English Document type: Proceedings Paper

DOI:10.1007/978-3-319-59081-3_9

Abstract:

In this paper, the stability of neutral T-S fuzzy neural networks with impulses is considered. By extending a singular impulsive differential inequality to the fuzzy version, some new criteria are established for the exponential stability of network under consideration. The results obtained improve some related works in previous literature. A numerical example is given to illustrate the effectiveness of the theoretical methods.

Stability of Complex-Valued Neural Networks with Two Additive Time-Varying Delay Components

Authors:Zhao, ZJ; Song, QK; Zhao, YC

Edited By: Cong F; Leung A; Wei Q

ADVANCES IN NEURAL NETWORKS, PT I

Book Series: Lecture Notes in Computer Science

Volume: 10261 Pages: 564-571 Published: 2017 Language: English Document type: Proceedings Paper

DOI:10.1007/978-3-319-59072-1_66

Abstract:

In this paper, a class of complex-valued neural networks including two additive time-varying delay components has been discussed. By making use of the combinational Lyapunov-Krasovskii functional and free weighting matrix method, as well as matrix inequality technique, a delay-dependent criterion of stability is derived.

EI 23条

1. An Improved Defogging Algorithm Based on Dark Color Theory Combined with Self-Adaptive Threshold Mechanism

Accession number: 20183405711908

Authors: Li, Aixing (1); Fang, Zhou (2); Mi, Bo (1)

Author affiliation: (1) College of Information Science and Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) College of Information Science and Engineering, Chaohu University, Chaohu; 23800, China

Corresponding author: Fang, Zhou(054050@chu.edu.cn)

Source title: Journal of Control Science and Engineering

Abbreviated source title: J. Control Sci. Eng.

Volume: 2018

Issue date: 2018

Publication year: 2018

Article number: 3975373

Language: English

ISSN: 16875249

E-ISSN: 16875257

Document type: Journal article (JA)

Publisher: Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States

Abstract: Defogging algorithms based on dark channel prior have color shift in light color areas because of inaccurate estimation of transmittance. To resolve this problem, a novel improved image clearness method is proposed. Based on the dark channel prior, the essential causes of color shift are analyzed, with two important factors summarized. Then, transmission map is calculated by using 33 fixed region, and the restoration module based on self-adaptive threshold mechanism for transmission map is provided. Some experiments are carried out to determine parameters in restoration module to correct the transmission map. According to the corrected transmission map, a transmission restoration algorithm is constructed based on the self-adaptive threshold mechanism to improve the performance of the fog-free image. The experiment results show that this method can resolve the color shift in light color areas effectively and guarantee the overall framework of defogging method based on dark color theory unchanged. © 2018 Aixing Li et al.

Number of references: 18

Main heading: Color

Controlled terms: Image enhancement - Restoration

Uncontrolled terms: Color shifts - Dark channel priors - Dark colors - Light color - Module-based - Restoration algorithm - Self-Adaptive

Classification code: 741.1 Light/Optics

Light/Optics

DOI: 10.1155/2018/3975373

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

2. Classification of Terrestrial Laser Scanning Data With Density-Adaptive Geometric Features

Accession number: 20183405721958

Authors: Chen, Maolin (1); Pan, Jianping (2); Xu, Jingzhong (3)

Author affiliation: (1) Civil Engineering and Architecture School, Chongqing Jiaotong University, Chongqing 400074, China, and also with the School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China (e-mail: maolinchen@whu.edu.cn).; (2) Civil Engineering and Architecture School, Chongqing Jiaotong University, Chongqing 400074, China.; (3) School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China.

Source title: IEEE Geoscience and Remote Sensing Letters

Abbreviated source title: IEEE Geosci. Remote Sens. Lett.

Issue date: August 14, 2018

Publication year: 2018

Language: English

ISSN: 1545598X

Document type: Article in Press

Publisher: Institute of Electrical and Electronics Engineers Inc.

Abstract: Point cloud classification is a crucial procedure in ground scene interpretation. In this letter, density-adaptive geometric features are proposed for the classification of terrestrial laser scanning data, with the problem brought by point density variation as one of the main concerns. For each point, point spacing is estimated, respectively, based upon the distance to scanner position and the angular resolution, and then used as neighborhood scale basis to generate the search range of optimal radius. In feature extraction, we modify some common geometric features to adapt to density variation, e.g., a polar projection grid is proposed to generate projection features instead of commonly used rectangular grid. The polar grid can make sure similar number of laser beams passing through each grid. An evaluation involving five classifiers is carried out in an outdoor scene captured by Reigl-VZ400 scanner and the results show density-adaptive features have better and more stable performances than features without considering density variation, with the highest overall accuracy of 95.95. Moreover, the proposed features perform well on the recognition of buildings from a large distance (more than 300 m in this letter). IEEE

Main heading: Classification (of information)

Controlled terms: Eigenvalues and eigenfunctions - Estimation - Extraction - Feature extraction - Geometry - Laser applications - Laser beams - Scanning - Steel beams and girders - Support vector machines - Surveying instruments - Three dimensional displays

Uncontrolled terms: Angular resolution - Density variations - Image color analysis - Overall accuracies - Point density - Scene interpretation - Stable performance - Terrestrial laser scanning

Classification code: 405.3 Surveying

Surveying

- 408.2 Structural Members and Shapes

Structural Members and Shapes

- 716.1 Information Theory and Signal Processing

Information Theory and Signal Processing

- 723 Computer Software, Data Handling and Applications

Computer Software, Data Handling and Applications

- 744.8 Laser Beam Interactions

Laser Beam Interactions

- 744.9 Laser Applications

Laser Applications

- 802.3 Chemical Operations

Chemical Operations

- 921 Mathematics

Mathematics

Numerical data indexing: Size 3.00e+02m

DOI: 10.1109/LGRS.2018.2860589

Database: Compendex

Data Provider: Engineering Village

3. Investigating the influence of external restraint on welding distortion in thin-plate welded structures by means of numerical simulation technology

Accession number: 20183405734132

Authors: Liang, Wei (1); Deng, Dean (2)

Author affiliation: (1) Chongqing Jiaotong University, No.66 Xuefu Road, Nan-an, Chongqing; 400074, China; (2) Chongqing University, No. 174, Shazhengjie, Shapingba, Chongqing; 400045, China

Corresponding author: Deng, Dean(deandeng@cqu.edu.cn)

Source title: Journal of Physics: Conference Series

Abbreviated source title: J. Phys. Conf. Ser.

Volume: 1063

Part number: 1 of 1

Issue: 1

Issue title: NUMISHEET 2018: 11th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Issue date: August 6, 2018

Publication year: 2018

Article number: 12082

Language: English

ISSN: 17426588

E-ISSN: 17426596

Document type: Conference article (CA)

Conference name: NUMISHEET 2018: 11th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Conference date: July 30, 2018 - August 3, 2018

Conference location: Tokyo, Japan

Conference code: 138624

Sponsor: Altair Engineering, Inc.; Amada Foundation; AutoForm Engineering GmbH as Platinum and Dinner; et al.; ITOCHU Techno-Solutions Corporation; JSOL Corporation

Publisher: Institute of Physics Publishing

Abstract: Welding-induced deformation not only degrades the fabrication accuracy of a welded structure but also decreases the productivity due to correction work. Accurate prediction of welding distortion will be helpful in controlling the dimension accuracy.In this study, the main objective is to clarify the influence of external restraint on welding distortion in three different thin-plate steel welded structures by means of numreical simulation technology. A two-step computational approach was employed to simulate welding distortion in each welded structure. In the first step, the theranal ealstic plastic finite element method (T-E-P FEM) was used to obtain inherent deformation for each typical joint. In the second step, an elastic FEM based on inherent strain theory was used to compute welding deformation for three thin-plate panels with different tihickness and shape. In addition, the effects of external restriant on welding deformation in a thin-plate panel with 5 mm thickness, a thin-plate panel with 10 mm thickness, and an asymmetric curved panel with 10 mm thickness were investigated. © 2018 Institute of Physics Publishing. All rights reserved.

Number of references: 4

Main heading: Welding

Controlled terms: Automobile parts and equipment - Computation theory - Deformation - Electric distortion - Metal forming - Numerical models - Plates (structural components) - Sheet metal

Uncontrolled terms: Accurate prediction - Computational approach - Fabrication accuracy - Inherent deformation - Simulation technologies - Welded structures - Welding deformations - Welding distortion

Classification code: 408.2 Structural Members and Shapes

Structural Members and Shapes

- 535.2 Metal Forming

Metal Forming

- 538.2 Welding

Welding

- 662.4 Automobile and Smaller Vehicle Components

Automobile and Smaller Vehicle Components

- 701.1 Electricity: Basic Concepts and Phenomena

Electricity: Basic Concepts and Phenomena

- 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory

Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory

- 921 Mathematics

Mathematics

Numerical data indexing: Size 1.00e-02m, Size 5.00e-03m

DOI: 10.1088/1742-6596/1063/1/012082

Funding Details: Number; Acronym; Sponsor: 51375518; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

4. Full-scale immersed tunnel fire experimental research on smoke flow patterns

Accession number: 20183405738907

Authors: Xu, P. (1, 2); Jiang, S.P. (3); Xing, R.J. (1); Tan, J.Q. (1)

Author affiliation: (1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) State Key Laboratory Cultivation Base for Bridge and Tunnel Engineering in Mountain Areas, Chongqing Jiaotong University, Chongqing; 400074, China; (3) China Merchants Chongqing Communications Technology Research & Design Institute Co., LTD, Chongqing; 400067, China

Corresponding author: Xu, P.(xu_pai@126.com)

Source title: Tunnelling and Underground Space Technology

Abbreviated source title: Tunn. Undergr. Space Technol.

Volume: 81

Issue date: November 2018

Publication year: 2018

Pages: 494-505

Language: English

ISSN: 08867798

Document type: Journal article (JA)

Publisher: Elsevier Ltd

Abstract: To research the smoke flow patterns and their effects on personnel evacuation during a tunnel fire, a full-scale model of an immersed 150 m tunnel was constructed, taking the Hong Kong–Zhuhai–Macao Bridge immersed tunnel in China as the prototype. A series of fire tests, including pool fires and vehicle fires, were developed to simulate a real fire scenario. The characteristic parameters describing the smoke flow were measured, including smoke layer height, smoke spread velocity, and CO concentration. Their development behaviors and main influence factors were explored, and finally smoke flow patterns were examined. The results showed that smoke stratification appeared, which was measured by smoke layer height. The smoke layer height distribution along the tunnel was found to obey a quartic polynomial trend (goodness of fit > 95%). From this, the safety distances were predicted to be 20 m in windy conditions and 80–90 m in still (no wind) conditions. Thus, the longitudinal velocity plays a leading role. Around the fire source or in still conditions, the buoyancy of the smoke is the critical factor driving smoke flow; the influence of other factors is no more than ±20%. However, other conditions depended on the ventilation state. CO concentration decreased sharply with increasing distance from the fire source. At a distance of 60 m, CO concentration decayed by 50%. © 2018 Elsevier Ltd

Number of references: 43

Main heading: Ventilation

Controlled terms: Fires - Flow patterns - Smoke - Tunnels

Uncontrolled terms: CO concentrations - Full-scale experiment - Smoke layer height - Smoke spreads - Tunnel fires

Classification code: 401.2 Tunnels and Tunneling

Tunnels and Tunneling

- 631.1 Fluid Flow, General

Fluid Flow, General

- 643.5 Ventilation

Ventilation

- 914.2 Fires and Fire Protection

Fires and Fire Protection

Numerical data indexing: Percentage 5.00e+01%, Percentage 9.50e+01%, Size 1.50e+02m, Size 2.00e+01m, Size 6.00e+01m

DOI: 10.1016/j.tust.2018.08.009

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

5. Study on Urban Rail Train ATO Based on Unified Optimization of Multi-swarm Hierarchical Structure

Accession number: 20183305688552

Title of translation: ATO

Authors: Xu, Kai (1, 2); Wu, Lei (1, 2); Zhao, Mei (3)

Author affiliation: (1) College of Information Science and Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Big Data Engineering Technology Research Center of Chongqing Public Transport Operation, Chongqing; 400074, China; (3) School of Electrical Engineering and Electronic Information, Xihua University, Chengdu; 610039, China

Source title: Tiedao Xuebao/Journal of the China Railway Society

Abbreviated source title: Tiedao Xuebao

Volume: 40

Issue: 6

Issue date: June 15, 2018

Publication year: 2018

Pages: 90-96

Language: Chinese

ISSN: 10018360

CODEN: TIXUF5

Document type: Journal article (JA)

Publisher: Science Press

Abstract: To meet the needs of operational mode curve design of urban rail transit train control system, the study established a multi-objective optimization model of urban rail transit train on the running time and energy consumption, under the conditions of safety, accurate stopping and various constraints. The particle swarm optimization(PSO) algorithm was combined with cuckoo search(CS) to form the multi-swarm hierarchical PSO-CS joint optimization algorithm. In the bottom layer, the method divided the whole swarm into several small populations, and each small population was optimized with the PSO algorithm, from which the elite particles from each small population were selected and sent to the top layer, where they were deeply optimized by the CS algorithm, and returned to the bottom layer of original small population. Both this method and multi-objective particle swarm optimization(MOPSO) algorithm were put into use in the train operation process optimization, respectively. The simulation results show better convergence and diversity of the Pareto front solution obtained by the proposed algorithm. Therefore, when applied to the optimization design of urban rail train operation curve, the algorithm not only provides better train control strategies, but also offers more options for designers. © 2018, Department of Journal of the China Railway Society. All right reserved.

Number of references: 18

Main heading: Particle swarm optimization (PSO)

Controlled terms: Curve fitting - Energy utilization - Light rail transit - Multiobjective optimization - Railroad traffic control - Structural design

Uncontrolled terms: Automatic train operations - Hierarchical structures - Multi objective - Urban rail transit - Urban traffic

Classification code: 408.1 Structural Design, General

Structural Design, General

- 433.1 Railroad Transportation, General

Railroad Transportation, General

- 433.4 Railway Traffic Control

Railway Traffic Control

- 525.3 Energy Utilization

Energy Utilization

- 921.5 Optimization Techniques

Optimization Techniques

- 921.6 Numerical Methods

Numerical Methods

DOI: 10.3969/j.issn.1001-8360.2018.06.012

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

6. Path Planning Algorithm of Intelligent Vehicle Based on Improved Visibility Graphs

Accession number: 20183305701495

Authors: Wei, Hanbing (1)

Author affiliation: (1) Chongqing Jiaotong University, China

Corresponding author: Wei, Hanbing(hbwei@cqjtu.edu.cn)

Source title: SAE Technical Papers

Abbreviated source title: SAE Techni. Paper.

Volume: 2018-August

Part number: 1 of 1

Issue: August

Issue title: SAE 2018 Intelligent and Connected Vehicles Symposium, ICVS 2018

Issue date: August 7, 2018

Publication year: 2018

Report number: 2018-01-1581.

Language: English

E-ISSN: 01487191

Document type: Conference article (CA)

Conference name: SAE 2018 Intelligent and Connected Vehicles Symposium, ICVS 2018

Conference date: August 14, 2018 - August 15, 2018

Conference location: Kunshan City, Jiangsu, China

Conference code: 138302

Publisher: SAE International

Abstract: Presently, the visibility graphs algorithm is mainly applied for path planning of indoor mobile robot. It only considers the constraints such as travelling time and move distance. The road lane and vehicle dynamics constraints are not deal with usually. In this paper, a local path planning algorithm based on improved visibility graphs is proposed for intelligent vehicle on structured road. First, free state space (FSS) is established based on ago-vehicle state, road lane and traffic condition for permitting ago-vehicle move safely. In FSS, the vehicle’s maneuver in preview distance can be inferred and the local target point can be designated. Next, sampling points is created in FSS. Combined with local target point, initial point and sampling points, road network can be generated consequently. Then, the approachable path in the road network are evaluated by constrains of the Euclidean distance and the vehicle dynamics constraints. In this way the unique shortest path satisfying the constraints are generated as an optimal path. Finally, the efficiency and performance of the algorithm are validated by simulation results. The comparison results with RRT algorithm show that, the planned path achieved by improved visibility graphs has shorter travel distance and lower curvature, which shows more superior advantage for the path planning of intelligent vehicle than RRT. © 2018 SAE International. All Rights Reserved.

Number of references: 18

Main heading: Intelligent vehicle highway systems

Controlled terms: Graph theory - Graphic methods - Motion planning - Roads and streets - Robot programming - Vehicles - Visibility

Uncontrolled terms: Curvature constraints - Efficiency and performance - Euclidean distance - Indoor mobile robots - Local path-planning - Path-planning algorithm - Traffic conditions - Visibility graphs

Classification code: 406.1 Highway Systems

Highway Systems

- 406.2 Roads and Streets

Roads and Streets

- 723.1 Computer Programming

Computer Programming

- 741.2 Vision

Vision

- 921.4 Combinatorial Mathematics, Includes Graph Theory, Set Theory

Combinatorial Mathematics, Includes Graph Theory, Set Theory

DOI: 10.4271/2018-01-1581

Funding Details: Number; Acronym; Sponsor: 51305472; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

7. Intelligent integrated control for maximum power point tracking of pv generation system

Accession number: 20183305699631

Title of translation:

Authors: Xu, Kai (1); Wang, Xiangping (2)

Author affiliation: (1) College of Information Science and Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) College of Mechanical Electrical and Vehicle Engineering, Chongqing Jiaotong University, Chongqing; 400074, China

Corresponding author: Xu, Kai(xkxjxwx@hotmail.com)

Source title: Taiyangneng Xuebao/Acta Energiae Solaris Sinica

Abbreviated source title: Taiyangneng Xuebao

Volume: 39

Issue: 2

Issue date: February 28, 2018

Publication year: 2018

Pages: 536-543

Language: Chinese

ISSN: 02540096

CODEN: TYNPDG

Document type: Journal article (JA)

Publisher: Science Press

Abstract: Aiming at the problems in maximum power point tracking(MPPT)of PV generation system, the traditional fuzzy control has the problems of quantification factor, scaling factor setting difficulty and poor adaptability, an intelligent integrated control method was proposed. The method uses improved genetic algorithm(IGA)to obtain the initial value of the quantification factor and scaling factor. In order to overcome the poor adaptability shortcomings of conventional fuzzy controller caused by fixing the initial value, the second-level fuzzy inference method was used to adjust these initial values online. At the same time, the neural network was used to memorize the second-level fuzzy reasoning rules to realize the rapid adjustment of the quantization factor and scaling factor of the conventional fuzzy controller. Compared with the conductance method and the conventional fuzzy control method, the maximum power value tracked by this method is the largest, the response is fast and the steady-state performance is good. The simulation experiments verify the effectiveness and superiority of this method. © 2018, Editorial Board of Acta Energiae Solaris Sinica. All right reserved.

Number of references: 16

Main heading: Fuzzy inference

Controlled terms: Controllers - Fuzzy control - Genetic algorithms - Integrated control - Maximum power point trackers - Neural networks - Photovoltaic cells

Uncontrolled terms: Conventional fuzzy controllers - Fuzzy control methods - Fuzzy inference method - Maximum Power Point Tracking - PV generation systems - Quantification factors - Self-adjustment - Steady state performance

Classification code: 704.2 Electric Equipment

Electric Equipment

- 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory

Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory

- 731 Automatic Control Principles and Applications

Automatic Control Principles and Applications

- 731.1 Control Systems

Control Systems

- 732.1 Control Equipment

Control Equipment

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

8. Three-dimensional modeling and finite element analysis of cycloid hyperbolic Arch Dam

Accession number: 20183105628321

Authors: Du, Tingna (1); Li, Bo (1)

Author affiliation: (1) Chongqing Jiaotong Uiversity, Chongqing Shi, China

Corresponding author: Du, Tingna(tingnadu@163.com)

Source title: Advances in Intelligent Systems and Computing

Abbreviated source title: Adv. Intell. Sys. Comput.

Volume: 809

Part number: 1 of 1

Issue title: ICGG 2018-Proceedings of the 18th International Conference on Geometry and Graphics - 40th Anniversary

Issue date: 2019

Publication year: 2019

Pages: 1241-1254

Language: English

ISSN: 21945357

ISBN-13: 9783319955872

Document type: Conference article (CA)

Conference name: 18th International Conference on Geometry and Graphics, ICGG 2018

Conference date: August 3, 2018 - August 7, 2018

Conference location: Milan, Italy

Conference code: 215939

Sponsor: The Journal for Geometry and Graphics (JGG)

Publisher: Springer Verlag

Abstract: Because the double curvature arch dam has the characteristics of distributing the stress for existing loads, it is more and more applied to water conservancy projects. The variable diameter involute double arch dam is an arch dam formed by the arch axis following the path of involute, a new function derivation process is proposed for the variable diameter involute double curvature arch dam, and the arch ring equation is obtained, and c++ programming is used to realize the automatic calculation of the computer, the 3D solid model of variable diameter involute double curvature arch dam is drawn. On this basis, a finite element analysis model of variable diameter involute double curvature arch dam is established, and the analysis results are obtained. For the application of this new arch dam in water conservancy projects, it provides theoretical reference for mathematics and mechanics. © 2019, Springer International Publishing AG, part of Springer Nature.

Number of references: 6

Main heading: Finite element method

Controlled terms: Arch dams - Arches - C++ (programming language) - Water management

Uncontrolled terms: 3-d modeling - Arch rings - Automatic calculations - Double curvature - Finite element analysis model - Three-dimensional model - Variable diameter - Water conservancy projects

Classification code: 408.2 Structural Members and Shapes

Structural Members and Shapes

- 441.1 Dams

Dams

- 723.1.1 Computer Programming Languages

Computer Programming Languages

- 921.6 Numerical Methods

Numerical Methods

DOI: 10.1007/978-3-319-95588-9_107

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

9. A Location-Sharing Technology for Traffic Organization at Un-Signalized Intersection

Accession number: 20183105616125

Authors: Ma, Qinglu (1, 2); Zhou, Qi (2); Feng, Min (2); Lar, Saleem Ullah (3)

Author affiliation: (1) Key Laboratory of Traffic System and Safety in Mountain Cities, Chongqing, China; (2) School of Traffic and Transportation, Chongqing Jiaotong Univ., PO Box 400000, Chongqing, China; (3) Khwaja Fareed Univ. of Engineering and Information Technology, PO Box 64200, Rahim Yar Khan, Pakistan

Source title: CICTP 2018: Intelligence, Connectivity, and Mobility - Proceedings of the 18th COTA International Conference of Transportation Professionals

Abbreviated source title: CICTP: Intell., Connect., Mobil. - Proc. COTA Int. Conf. Transp. Prof.

Part number: 1 of 1

Issue title: CICTP 2018: Intelligence, Connectivity, and Mobility - Proceedings of the 18th COTA International Conference of Transportation Professionals

Issue date: 2018

Publication year: 2018

Pages: 156-168

Language: English

ISBN-13: 9780784481523

Document type: Conference article (CA)

Conference name: 18th COTA International Conference of Transportation Professionals: Intelligence, Connectivity, and Mobility, CICTP 2018

Conference date: July 5, 2018 - July 8, 2018

Conference location: Beijing, China

Conference code: 137712

Sponsor: Didi Chuxing; Shanghai International Automobile City Group Co., Ltd.; Transportation and Development Institute (T and DI) of the American Society of Civil Engineers (ASCE); Zhengzhou Yutong Group Co., Ltd.

Publisher: American Society of Civil Engineers (ASCE)

Abstract: With the technical development of the GNSS (such as GPS, BDS, GLONASS), wireless communication, and intelligent vehicle, connected/autonomous vehicles (C/AVs) have become an effective means to solve traffic problems, especially in unsignalized intersections. C/AVs can provide a series of proper intersection “sight” distance for uncontrolled and stop/yield-controlled intersections. Under the (C/AVs) environment, information sharing and interactivity can be achieved via V2V (vehicle to vehicle communication) and V2I (vehicle to infrastructure communication). The traffic conditions of two different organization ways are simulated analysis by comparing with the actual traffic investigation data. The simulation results showed that the traffic control method proposed in this paper is 0.635 seconds less than the existing-signal-control traffic organization mode, and the traffic efficiency has been improved 27.7% under the same traffic volume. C/AVs have been the research focus in intelligent traffic, leading the development of this field, and greatly improving the traffic safety. © 2018 American Society of Civil Engineers.

Number of references: 26

Main heading: Vehicle to vehicle communications

Controlled terms: Traffic control - Traffic signals - Vehicles - Wireless telecommunication systems

Uncontrolled terms: Information sharing - Intelligent traffics - Signalized intersection - Technical development - Traffic organization - Unsignalized intersections - Vehicle-to-infrastructure communications - Wireless communications

Classification code: 432.4 Highway Traffic Control

Highway Traffic Control

- 716 Telecommunication; Radar, Radio and Television

Telecommunication; Radar, Radio and Television

Numerical data indexing: Percentage 2.77e+01%, Time 6.35e-01s

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

10. Corrosion detection of bridge reinforced concrete with induction heating and infrared thermography

Accession number: 20183105637141

Authors: Liu, Lu (1); Zheng, Dan (2); Zhou, Jianting (1); He, Jun (3); Xin, Jingzhou (1); Cao, Yupeng (4)

Author affiliation: (1) College of Civil Engineering, Chongqing Jiaotong University, Chongqing, China; (2) School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, China; (3) Guangxi Beibu Gulf Investment Group Co., Ltd, Guangxi, China; (4) Jiangxi Provincial Expressway Investment Group Co., Ltd, Jiangxi, China

Corresponding author: Xin, Jingzhou(xjingyuhong@126.com)

Source title: International Journal of Robotics and Automation

Abbreviated source title: Int J Rob Autom

Volume: 33

Issue: 4

Issue date: July 26, 2018

Publication year: 2018

Pages: 379-385

Language: English

ISSN: 08268185

CODEN: IJAUED

Document type: Journal article (JA)

Publisher: Acta Press

Abstract: In this paper, a novel method for non-destructive detection of steel corrosion in bridge reinforced concrete is proposed with induction heating and infrared thermography. Steel rebar and reinforced concrete specimens were fabricated with different corrosion levels through an accelerated corrosion process. Corroded and non-corroded steel rebar and reinforced concrete specimen were heated by an indirect contacted inductive heater, and an infrared camera was applied to measure temperature distribution and change at the concrete surface. The experimental results show that the temperature rise in the corroded rebar is higher than that in the non-corroded rebar, and the difference is greater when the corrosion degree is greater. This study provided a new possible way for non-destructive detection of corrosion in reinforced concrete bridges.

Number of references: 28

Main heading: Steel corrosion

Controlled terms: Bridges - Induction heating - Reinforced concrete - Thermography (imaging)

Uncontrolled terms: Accelerated corrosion process - Concrete surface - Corrosion degree - Corrosion detection - Corrosion levels - Infra-red cameras - Nondestructive detection - Temperature rise

Classification code: 401.1 Bridges

Bridges

- 412 Concrete

Concrete

- 539.1 Metals Corrosion

Metals Corrosion

- 642.1 Process Heating

Process Heating

- 742.1 Photography

Photography

DOI: 10.2316/Journal.206.2018.4.206-5085

Funding Details: Number; Acronym; Sponsor: 2016YFC0802202; ALCA; Advanced Low Carbon Technology Research and Development Program - Number; Acronym; Sponsor: 2017YFC0806007; ALCA; Advanced Low Carbon Technology Research and Development Program - Number; Acronym; Sponsor: 51479013; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

11. Uncertainty relations for signal concentrations associated with the linear canonical transform

Accession number: 20183105638464

Authors: Xu, Shuiqing (1, 3); Feng, Li (2, 3); Chai, Yi (3); Du, Bin (1); He, Yigang (1)

Author affiliation: (1) College of Electrical Engineering and Automation, Hefei University of Technology, Hefei; 230009, China; (2) College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing; 400074, China; (3) College of Automation, Chongqing University, Chongqing; 400044, China

Corresponding author: Feng, Li(fengli_cqu@126.com)

Source title: Digital Signal Processing: A Review Journal

Abbreviated source title: Digital Signal Process Rev J

Volume: 81

Issue date: October 2018

Publication year: 2018

Pages: 100-105

Language: English

ISSN: 10512004

CODEN: DSPREJ

Document type: Journal article (JA)

Publisher: Elsevier Inc.

Abstract: The linear canonical transform (LCT) has been shown to be a useful and powerful tool in optics and signal processing. In this paper, a new uncertainty relation in the LCT domain has been obtained at first. It shows that nonzero signal’s energy in two arbitrary LCT domains cannot be arbitrarily large simultaneously, which is the generalization of the uncertainty principle for signal concentrations in the Fourier domain. Meanwhile, the signals which are the best in achieving simultaneous concentration in two arbitrary LCT domains are also proposed. In addition, some potential applications are presented to show the effectiveness of the theorems. © 2018 Elsevier Inc.

Number of references: 36

Main heading: Mathematical transformations

Controlled terms: Signal processing

Uncontrolled terms: Fourier domains - Linear canonical transform - Truncation operators - Uncertainty principles - Uncertainty relation

Classification code: 716.1 Information Theory and Signal Processing

Information Theory and Signal Processing

- 921.3 Mathematical Transformations

Mathematical Transformations

DOI: 10.1016/j.dsp.2018.06.008

Funding Details: Number; Acronym; Sponsor: 51577046; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 51637004; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61633005; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 61673076; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

12. Experimental and modeling study on the creep characteristics of geogrid

Accession number: 20183105617874

Authors: Ying, Geng (1); Guangcai, Zhan (2); Feng, Zhu (2); Xia, Li (3)

Author affiliation: (1) Maritime Engineering Division, CCCC-FHDI ENGINEERING CO. LTD., Guangzhou, China; (2) Overseas Business Division, CCCC-FHDI ENGINEERING CO. LTD., Guangzhou, China; (3) Chongqing Jiaotong University, Chongqing, China

Source title: Proceedings of 2017 9th International Conference On Modelling, Identification and Control, ICMIC 2017

Abbreviated source title: Proc. Int. Conf. Model., Identif. Control, ICMIC

Volume: 2018-March

Part number: 1 of 1

Issue title: Proceedings of 2017 9th International Conference On Modelling, Identification and Control, ICMIC 2017

Issue date: March 21, 2018

Publication year: 2018

Pages: 948-952

Language: English

ISBN-13: 9781509065738

Document type: Conference article (CA)

Conference name: 9th International Conference on Modelling, Identification and Control, ICMIC 2017

Conference date: July 10, 2017 - July 12, 2017

Conference location: Kunming, China

Conference code: 135451

Publisher: Institute of Electrical and Electronics Engineers Inc.

Abstract: The creep of geogrid is an important factor which affects the safety and stability of reinforced structure. It is difficult to make a quantitative description of the creep effect of geogrid due to the fact that the creep of geogrid sustains a long period of time. In this paper, the creep process of geogrid is quantitatively studied by method of indoor experiment and together with theoretical derivation. In the study, an advanced digital speckle system was used to record the movement of particles in the experiment. The results show that the creep model is suitable to describe the strain distribution and the creep behavior of geogrid in time domain and space domain. © 2017 IEEE.

Number of references: 8

Main heading: Creep

Controlled terms: Geosynthetic materials - Safety factor - Speckle

Uncontrolled terms: Creep characteristics - Digital Speckle system - Geogrids - Quantitative description - Reinforced structures - Safety and stabilities - Strain distributions - Theoretical derivations

Classification code: 741.1 Light/Optics

Light/Optics

- 914.1 Accidents and Accident Prevention

Accidents and Accident Prevention

- 951 Materials Science

Materials Science

DOI: 10.1109/ICMIC.2017.8321592

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

13. Teaching Reform of Civil Engineering Materials Course Based on Project-Driven Pedagogy

Accession number: 20183105636404

Authors: Yidong, Xu (1); Wei, Chen (1); Weiguojian, You (2); Jiansheng, Shen (1)

Author affiliation: (1) Ningbo Institute of Technology, Zhejiang University, Ningbo; 315100, China; (2) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China

Corresponding author: Yidong, Xu(xyd@nit.zju.edu.cn)

Source title: IOP Conference Series: Earth and Environmental Science

Abbreviated source title: IOP Conf. Ser. Earth Environ. Sci.

Volume: 153

Part number: 1 of 1

Issue: 5

Issue title: 2018 2nd International Workshop on Renewable Energy and Development, IWRED 2018 - 4.Green Building and Construction Engineering

Issue date: June 1, 2018

Publication year: 2018

Article number: 052023

Language: English

ISSN: 17551307

E-ISSN: 17551315

Document type: Conference article (CA)

Conference name: 2018 2nd International Workshop on Renewable Energy and Development, IWRED 2018

Conference date: April 20, 2018 - April 22, 2018

Conference location: Guilin, China

Conference code: 136890

Publisher: Institute of Physics Publishing

Abstract: In view of the scattered experimental projects in practical courses of civil engineering materials, the poor practical ability of students and the disconnection between practical teaching and theoretical teaching, this paper proposes a practical teaching procedure. Firstly, the single experiment should be offered which emphasizes on improving the students’ basic experimental operating ability. Secondly, the compressive experiment is offered and the overall quality of students can be examined in the form of project team. In order to investigate the effect of teaching reform, the comparative analysis of the students of three grades (2014, 2015 and 2016) majored in civil engineering was conducted. The result shows that the students’ ability of experimental operation is obviously improved by using the project driven method-based teaching reform. Besides, the students’ ability to analyse and solve problems has also been improved. © Published under licence by IOP Publishing Ltd.

Number of references: 5

Main heading: Teaching

Controlled terms: Curricula - Students

Uncontrolled terms: Comparative analysis - Compressive experiment - Engineering materials - Experimental projects - Overall quality - Practical teachings - Project-driven - Teaching reforms

Classification code: 901.2 Education

Education

DOI: 10.1088/1755-1315/153/5/052023

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

14. Collaboration and transportation resource sharing in multiple centers vehicle routing optimization with delivery and pickup

Accession number: 20183105638420

Authors: Wang, Yong (1, 2); Zhang, Jie (1); Assogba, Kevin (3); Liu, Yong (1); Xu, Maozeng (1); Wang, Yinhai (4, 5)

Author affiliation: (1) School of Economics and Management, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Management and Economics, University of Electronic Science and Technology, Chengdu; 610054, China; (3) School of Civil and Construction Engineering, Oregon State University, Corvallis; OR; 97331, United States; (4) Department of Civil and Environmental Engineering, University of Washington, Seattle; WA; 98195-2700, United States; (5) Transportation Data Science Research Center, College of Transportation Engineering, Tongji University, Shanghai; 201804, China

Corresponding author: Wang, Yong(yongwx@cqjtu.edu.cn)

Source title: Knowledge-Based Systems

Abbreviated source title: Knowl Based Syst

Issue date: 2018

Publication year: 2018

Language: English

ISSN: 09507051

CODEN: KNSYET

Document type: Article in Press

Publisher: Elsevier B.V.

Abstract: The adoption of collaboration strategies among logistics facilities and the formation of one or multiple coalitions constitute a sustainable approach to vehicle routing network optimization. This paper introduces a collaborative multiple centers vehicle routing problem with simultaneous delivery and pickup (CMCVRPSDP) to minimize operating cost and the total number of vehicles in the network. Distribution and pickup centers are allowed to share vehicles and customers in order to increase the entire network’s efficiency and maximize profit. To provide the coalition coordinators with good routing solutions, we propose a hybrid heuristic algorithm which properly combines k-means and Non-dominated Sorting Genetic Algorithm-II (NSGA-II). Based on clustering solutions, the proposed Hybrid NSGA-II (HNSGA-II) first generates a real coded population to bind our mathematical model constraints and to obtain a large number of feasible solutions which converge to optimality. Chromosomes are divided for genetic operations with partial mapped crossover and swap mutation algorithms, before their recombination to ensure the quality of our results. Comparisons with the traditional NSGA-II and the Multi-Objective Particle Swarm Optimization (MOPSO) algorithm indicate better performances of HNSGA-II in terms of objective function values. We also apply Cost Gap Allocation method (CGA) and the strictly monotonic path selection principle to examine profit allocation schemes. Numerical analyses on part of Chongqing city’s logistics network show the superiority of HNSGA-II over MOPSO and NSGA-II on the practical case study, as well that of CGA over the Minimum Costs-Remaining Savings (MCRS), Shapley and Game Quadratic Programming (GQP) methods. In addition, the proposed profit allocation approach has supported the establishment of a grand coalition instead of two sub-coalitions. CMCVRPSDP optimization reduces long-haul transportation, improves the vehicle loading rate and facilitates sustainable development. Through the rational allocation of profits, the proposed solution methodology assures the stability and fairness among coalition members. The implementation is also important to design sustainable urban transportation networks. © 2018

Main heading: Network routing

Controlled terms: Cost benefit analysis - Distributed computer systems - Game theory - Genetic algorithms - Heuristic algorithms - Logistics - Multiobjective optimization - Numerical methods - Particle swarm optimization (PSO) - Pickups - Profitability - Quadratic programming - Urban transportation - Vehicle routing - Vehicles

Uncontrolled terms: Cooperative game theory - Hybrid heuristic algorithms - Profit allocation - Resource sharing - Vehicle Routing Problems

Classification code: 432 Highway Transportation

Highway Transportation

- 433 Railroad Transportation

Railroad Transportation

- 722.4 Digital Computers and Systems

Digital Computers and Systems

- 723.1 Computer Programming

Computer Programming

- 911 Cost and Value Engineering; Industrial Economics

Cost and Value Engineering; Industrial Economics

- 911.2 Industrial Economics

Industrial Economics

- 921.5 Optimization Techniques

Optimization Techniques

- 921.6 Numerical Methods

Numerical Methods

- 922.1 Probability Theory

Probability Theory

DOI: 10.1016/j.knosys.2018.07.024

Funding Details: Number; Sponsor: 17SKG067; Chongqing Municipal Education Commission - Number; Sponsor: 2016M600735; China Postdoctoral Science Foundation - Number; Sponsor: 2017T100692; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 71402011, 41401255, 71471024; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 71432003; NSFC; National Natural Science Foundation of China

Database: Compendex

Data Provider: Engineering Village

15. Map matching algorithm based on V2I technology

Accession number: 20183105647850

Authors: Du, Zi-Xue (1); Liu, Bin-Yan (1, 2); Xia, Qm (2)

Author affiliation: (1) Chongqing Jiaotong University, Chongqing; 400074, China; (2) China Automotive Engineering Research Institute Co., Ltd., Chongqing; 400000, China

Source title: Proceedings - 2018 International Conference on Robots and Intelligent System, ICRIS 2018

Abbreviated source title: Proc. - Int. Conf. Robot. Intell. Syst., ICRIS

Part number: 1 of 1

Issue title: Proceedings - 2018 International Conference on Robots and Intelligent System, ICRIS 2018

Issue date: July 11, 2018

Publication year: 2018

Pages: 137-140

Language: English

ISBN-13: 9781538665800

Document type: Conference article (CA)

Conference name: 2018 International Conference on Robots and Intelligent System, ICRIS 2018

Conference date: May 26, 2018 - May 27, 2018

Conference location: Changsha, China

Conference code: 137891

Sponsor: Huaian Numerical Control Association; Hunan Internet of Things Association; Shenzhen Research Institute of Central South University

Publisher: Institute of Electrical and Electronics Engineers Inc.

Abstract: A large number of traffic safety and traffic efficiency problems can be solved by technology of V2X(Vehicle to X, X can be infrastructure, vehicle, pedestrian and so on). While map matching technology is the foundation of many V2X applications. This article focuses on V2I (Vehicle to Infrastructure) technology, one of the V2X technology. And it proposes a map matching algorithm based on technology of V2I. Nearby vehicles make information interaction by OBU(on board unit). OBU also obtains local logic map data by V2I. Candidate link set is established by local logic map data. And then the matching link can be determined by calculating the candidate link weight. At last, the real vehicle test was implemented in intelligent connected vehicle closed test area in Chongqing. The feasibility of the algorithm was verified by the test. © 2018 IEEE.

Number of references: 6

Main heading: Vehicles

Controlled terms: Computer circuits - Intelligent robots - Intelligent systems - Pedestrian safety

Uncontrolled terms: Connected vehicles - Information interaction - Map-matching algorithm - On-board units - Real vehicle tests - Traffic efficiency - Traffic safety - Vehicle-to-infrastructure

Classification code: 406.2 Roads and Streets

Roads and Streets

- 721.3 Computer Circuits

Computer Circuits

- 723.4 Artificial Intelligence

Artificial Intelligence

- 731.6 Robot Applications

Robot Applications

DOI: 10.1109/ICRIS.2018.00043

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

16. Hierarchical Control for Ship Navigation under Winds: A Case in the Three Gorges Reservoir Area

Accession number: 20183105616078

Authors: Jiang, Dan (1); Wu, Bing (2)

Author affiliation: (1) Dept. of Navigation Technology, Chongqing Jiaotong Univ., PO Box 400074, Chongqing, China; (2) Intelligent Transport Systems Research Center (ITSC), Wuhan Univ. of Technology, PO Box 125, Heping, China

Corresponding author: Wu, Bing(bing.wu@whut.edu.cn)

Source title: CICTP 2018: Intelligence, Connectivity, and Mobility - Proceedings of the 18th COTA International Conference of Transportation Professionals

Abbreviated source title: CICTP: Intell., Connect., Mobil. - Proc. COTA Int. Conf. Transp. Prof.

Part number: 1 of 1

Issue title: CICTP 2018: Intelligence, Connectivity, and Mobility - Proceedings of the 18th COTA International Conference of Transportation Professionals

Issue date: 2018

Publication year: 2018

Pages: 1693-1700

Language: English

ISBN-13: 9780784481523

Document type: Conference article (CA)

Conference name: 18th COTA International Conference of Transportation Professionals: Intelligence, Connectivity, and Mobility, CICTP 2018

Conference date: July 5, 2018 - July 8, 2018

Conference location: Beijing, China

Conference code: 137712

Publisher: American Society of Civil Engineers (ASCE)

Abstract: In the Three Gorges Reservoir area of China, frequent winds have become an important factor affecting the safety of ship navigation. According to the requirements of ship stability in the “Statutory Inspection Rules for Inland River Ships of China,” the theory of ship motion is deployed to analyze the relationship between vessel stability and anti-wind grade, and the wind load for typical ships in the Three Gorges River area is calculated based on the navigating zone. The calculation formula of allowed navigation speed is put forward under wind conditions. In line with the structural characteristics and operating traits of each ship type, the hierarchical control strategy for navigation under the wind conditions is proposed on the basis of wind resistance and safe speed of various ship types, and aims improving navigation safety and shipping efficiency under wind conditions in the Three Gorges River. © 2018 American Society of Civil Engineers.

Number of references: 7

Main heading: Ships

Controlled terms: Navigation - Rivers - Safety factor

Uncontrolled terms: Calculation formula - Hierarchical control - Hierarchical control strategies - Navigation safety - Navigation speed - Structural characteristics - Three gorges reservoir area - Wind conditions

Classification code: 914.1 Accidents and Accident Prevention

Accidents and Accident Prevention

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

17. Study on Some Properties of Hydrodynamic Cavitation Damage

Accession number: 20182905577170

Authors: Liu, Zhaocun (1, 2); Wang, Xiaoqing (1, 2); Fan, Weijia (1); Yv, Kui (1)

Author affiliation: (1) Chongqing Jiaotong University, Chongqing, China; (2) Key Laboratory of Communication Civil Waterway Regulation, Chongqing, China

Source title: IOP Conference Series: Earth and Environmental Science

Abbreviated source title: IOP Conf. Ser. Earth Environ. Sci.

Volume: 168

Part number: 1 of 1

Issue: 1

Issue title: 2018 the 4th International Conference on Renewable Energy Technologies, ICRET 2018

Issue date: July 2, 2018

Publication year: 2018

Article number: 012028

Language: English

ISSN: 17551307

E-ISSN: 17551315

Document type: Conference article (CA)

Conference name: 2018 4th International Conference on Renewable Energy Technologies, ICRET 2018

Conference date: January 16, 2018 - January 18, 2018

Conference location: Kuala Lumpur, Malaysia

Conference code: 137805

Sponsor: ASEPTEC SDN. BHD Company; University of Malaya; Widyatama University

Publisher: Institute of Physics Publishing

Abstract: Some hydrodynamic cavitation damage properties were studied in this letter. From the viewpoint of cavitation damage, the flowing characters near the wall, such as three features of the turbulent structures, streak structure; vortices; and bursting phenomena, the energy distribution, and the fluctuation character were explored. The characters of cavitation and cavitation damage were investigated, the relations among the cavitation, coherent structure and viscous effect were explored, and the energy characters in cavitation damage flowing field was studied. The results show that, the cavitation damage will have close relationship with the value distribution of the Lamb vector and the helicity. The relation between the cavitation damage and the Reynolds number essentially results from the eddy effect. The conceptive formula of cavitation damage was given. The paper clearly demonstrated the affecting factors to dominate the cavitation damage to make it show stochastic characters. These results may be useful to civil engineers. © Published under licence by IOP Publishing Ltd.

Number of references: 15

Main heading: Cavitation

Controlled terms: Hydrodynamics - Renewable energy resources - Reynolds number - Stochastic systems

Uncontrolled terms: Affecting factors - Cavitation damage - Coherent structure - Energy distributions - Hydrodynamic cavitations - Turbulent structures - Value distribution - Viscous effect

Classification code: 525.1 Energy Resources and Renewable Energy Issues

Energy Resources and Renewable Energy Issues

- 631.1 Fluid Flow, General

Fluid Flow, General

- 631.1.1 Liquid Dynamics

Liquid Dynamics

- 961 Systems Science

Systems Science

DOI: 10.1088/1755-1315/168/1/012028

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

18. An experimental study of the concrete using polymer and metakaolin as additives

Accession number: 20182905552345

Authors: Menhosh, Adel Al (1); Wang, Yan (2); Wang, Yu (1)

Author affiliation: (1) School of Computing, Science and Engineering, University of Salford, Manchester; M5 4WT, United Kingdom; (2) School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China

Source title: Sustainable Construction Materials and Technologies

Abbreviated source title: Sustain. Constr. Mater. Technol.

Volume: 2016-August

Part number: 1 of 1

Issue title: 4th International Conference on Sustainable Construction Materials and Technologies, SCMT 2016

Issue date: 2016

Publication year: 2016

Language: English

ISSN: 25153048

E-ISSN: 25153056

Document type: Conference article (CA)

Conference name: 4th International Conference on Sustainable Construction Materials and Technologies, SCMT 2016

Conference date: August 7, 2016 - August 11, 2016

Conference location: Las Vegas, NV, United states

Conference code: 137590

Publisher: International Committee of the SCMT conferences

Abstract: Environmental friendly and high performance concrete is very import for the applications in sewage and water treatment industry. Using mineral additives such as fly Ash and silica fume has been proven an effective approach to improve concrete properties. This paper reports a study of the effect of using both polymer and metakaolin additives together on the mechanical and durability properties of concrete. Different proportion of the combination using two different polymers, metakaolin and recycled fiber reinforcement have been studied. The effects of water to cement ratio and the curing methods have also been compared. At last an optimized mixture and curing method has been suggested. © 2016 International Committee of the SCMT conferences. All rights reserved.

Number of references: 13

Main heading: Concrete additives

Controlled terms: Curing - Fly ash - High performance concrete - Polymers - Sewage - Silica fume - Sustainable development - Water treatment

Uncontrolled terms: Concrete properties - Curing methods - Different proportions - Effective approaches - Environmental-friendly - Mechanical and durability properties - Mineral additives - Water to cement (binder) ratios

Classification code: 412 Concrete

Concrete

- 445.1 Water Treatment Techniques

Water Treatment Techniques

- 452.1 Sewage

Sewage

- 802.2 Chemical Reactions

Chemical Reactions

- 815.1 Polymeric Materials

Polymeric Materials

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

19. Electronic Properties of Armchair MoS 2 Nanoribbons with Stacking Faults: First-Principles Calculations

Accession number: 20182705386688

Authors: Xu, Weiwei (1); Wang, Jianwei (2); Laref, Amel (3); Yang, Juan (4); Wu, Xiaozhi (1); Wang, Rui (1)

Author affiliation: (1) Institute for Structure and Function, Chongqing University, Chongqing; 401331, China; (2) Microsystem Technolgy Laboratory, Microsystem and Terahertz Research Center, CAEP, Chengdu; 610200, China; (3) Department of physics and Astronomy, College of Science, King Saud University, Riyadh; 11451, Saudi Arabia; (4) College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing; 402247, China

Corresponding author: Wu, Xiaozhi(xiaozhiwu@cqu.edu.cn)

Source title: Journal of Electronic Materials

Abbreviated source title: J Electron Mater

Volume: 47

Issue: 9

Issue date: September 1, 2018

Publication year: 2018

Pages: 5498-5508

Language: English

ISSN: 03615235

CODEN: JECMA5

Document type: Journal article (JA)

Publisher: Springer New York LLC

Abstract: The band structures and partial charge densities of armchair MoS 2 with and without stacking fault have been investigated using first-principles calculations. The band gaps of MoS 2 with periodically arranged stacking fault increase with the decreasing of stacking fault density and converge to 0.27 eV, which is smaller than perfect MoS 2 (1.76 eV). For MoS 2 nanoribbons with stacking fault, the band gap increases for ribbon width L≤ 18 and decreases slightly for L≥ 18. The band gaps are smaller than that of MoS 2 nanoribbons without stacking fault. The partial charge densities of armchair MoS 2 nanoribbons with stacking fault are also presented. Results indicate that the defect levels originate from the stacking fault and are located in the forbidden band near the Fermi level. Therefore, the band gaps can be decreased by stacking fault. © 2018, The Minerals, Metals & Materials Society.

Number of references: 74

Main heading: Stacking faults

Controlled terms: Band structure - Calculations - Electronic properties - Energy gap - Layered semiconductors - Molybdenum compounds - Nanoribbons - Sulfur compounds

Uncontrolled terms: Defect levels - First-principles calculation - Forbidden band - Molybdenum disulfide - nanoribbon - Stacking fault density

Numerical data indexing: Electron_Volt 1.76e+00eV, Electron_Volt 2.70e-01eV

DOI: 10.1007/s11664-018-6445-9

Funding Details: Number; Acronym; Sponsor: 11104361; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

20. Dynamic assessment and forecast of urban water ecological footprint based on exponential smoothing analysis

Accession number: 20182705405568

Authors: Su, Yin (1); Gao, Weijun (1); Guan, Dongjie (2, 3); Su, Weici (4, 5)

Author affiliation: (1) Faculty of Environmental Engineering, The University of Kitakyushu, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu; 808-0135, Japan; (2) College of Architecture and Urban Planning, Chongqing Jiaotong University, No.66 Xuefu Rd., Nan’an Dist., Chongqing; 400074, China; (3) Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, No.174 Shazheng Rd., Shapingba Dist., Chongqing; 400044, China; (4) College of Geographical Science and Tourism, Chongqing Normal University, No.12 Tianchen Rd., Shapingba Dist., Chongqing; 400047, China; (5) Institute of Mountain Resources, Guizhou Academy of Science, No.40 Yan’andong Rd., Yunyan Dist., Guiyang; 550001, China

Corresponding author: Guan, Dongjie(guandongjie_2000@163.com)

Source title: Journal of Cleaner Production

Abbreviated source title: J. Clean. Prod.

Volume: 195

Issue date: 10 September 2018

Publication year: 2018

Pages: 354-364

Language: English

ISSN: 09596526

CODEN: JCROE8

Document type: Journal article (JA)

Publisher: Elsevier Ltd

Abstract: Water resources are essential for production and life of human beings, as well as urban economy and social development. At present, shortage of water resource has been emerging one of the urgent problems that many cities in China are facing due to rapid urbanization. In this work, water ecological footprint method has been applied to demonstrate how the sustainable utilization of water resources can be realized. According to the basic principle and calculation model of water ecological footprint, the water ecological footprint (WEF) and water ecological carrying capacity (WEC) in a period of 2004–2015 in Beijing, Shanghai, Tianjin, and Chongqing were analyzed. Then, the water ecological footprints per capita were predicted with the quadratic exponential smoothing in 2020 and 2025, respectively. The results show that the total WEF in these cities except for Shanghai increased from 2004 to 2015. The productive WEF was the primary consumption account in the total WEF accounts of the four cities. In 2015, the productive WEFs of Beijing, Shanghai, Tianjin, and Chongqing accounted for 54.46%, 82.61%, 75.04%, and 80.03% of total WEF amounts, respectively. At the same time, the proportion of the WEF of tertiary industry in Beijing was as high as 50.14% in the productive WEF accounts. The biggest proportion of the WEF of secondary industry was 59.14% and 53.14% in Shanghai and Chongqing, respectively. In Tianjin, the WEF of primary industry was the biggest proportion, accounting for 65.03%. In terms of the WEF per capita, we also found that the water ecological surplus per capita for Tianjin occurred only in 2012 indicating serious water ecological deficit in the other years. While the water ecological deficit per capita occurred in Shanghai before 2014 and exited in Beijing in the whole study period, which suggested that water resource utilization was not sustainable. However, the WEC per capita in Chongqing was bigger than the WEF per capita during 2004–2015, contributing to the water ecological surplus per capita in Chongqing. That is to say, the sustainable utilization of water resources in Chongqing was rational. It is evidenced that such changes of the total WEF are closely related to the productive WEF. We thus suggest that the productive structure associated with the distribution of water resources in different cities should be manipulated towards improving the WEC, reducing the WEF and fix regional water imbalance for further promoting the sustainable development of the overall socio-economy. © 2018 Elsevier Ltd

Number of references: 47

Main heading: Water resources

Controlled terms: Ecology

Uncontrolled terms: Distribution of water - Ecological footprint - Exponential smoothing - Exponential smoothing analysis - Exponential smoothing model - Sustainable utilization - Water ecological carrying capacities - Water resource utilization

Classification code: 444 Water Resources

Water Resources

- 454.3 Ecology and Ecosystems

Ecology and Ecosystems

Numerical data indexing: Percentage 5.01e+01%, Percentage 5.31e+01%, Percentage 5.45e+01%, Percentage 5.91e+01%, Percentage 6.50e+01%, Percentage 7.50e+01%, Percentage 8.00e+01%, Percentage 8.26e+01%

DOI: 10.1016/j.jclepro.2018.05.184

Funding Details: Number; Acronym; Sponsor: 41201546; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 41261038; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

21. Seismic vibration control for bridges with high-piers in Sichuan-Tibet Railway

Accession number: 20182705517554

Authors: Chen, Zhaowei (1, 2); Han, Zhaoling (3); Fang, Hui (4); Wei, Kai (2)

Author affiliation: (1) School of Mechanotronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing, China; (2) MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, China; (3) State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, China; (4) Electric Power Research Institute, State Grid Chongqing Electric Power Company, Chongqing, China

Corresponding author: Chen, Zhaowei(chenzhaowei_cq@163.com)

Source title: Structural Engineering and Mechanics

Abbreviated source title: Struct Eng Mech

Volume: 66

Issue: 6

Issue date: June 25, 2018

Publication year: 2018

Pages: 749-759

Language: English

ISSN: 12254568

CODEN: SEGMEQ

Document type: Journal article (JA)

Publisher: Techno Press

Abstract: Aiming at widely used high-pier bridges in Sichuan-Tibet Railway, this paper presents an investigation to design and evaluate the seismic vibration reduction effects of several measures, including viscous damper (VD), friction pendulum bearing (FPB), and tuned mass damper (TMD). Primarily, according to the detailed introduction of the concerned bridge structure, dynamic models of high-pier bridges with different seismic vibration reduction (SVR) measures are established. Further, the designs for these SVR measures are performed, and the optimal parameters of these measures are investigated. On this basis, the vibration reduction effects of these measures are analyzed and assessed subject to actual earthquake excitations in Wenchuan Earthquake (M=8.0), and the most appropriate SVR measure for high-pier bridges in Sichuan-Tibet Railway is determined at the end of the work. Results show that the height of pier does not obviously affect the performances of the concerned SVR measures. Comprehensively considering the vibration absorption performance, installation and maintenance of all the employed measures in this paper, TMD is the best one to absorb vibrations induced by earthquakes. Copyright © 2018 Techno-Press, Ltd.

Number of references: 30

Main heading: Vibration analysis

Controlled terms: Composite bridges - Earthquakes - Piers - Railroad bridges - Railroads - Seismic design

Uncontrolled terms: Earthquake excitation - Friction pendulum bearings - High piers - Seismic effect - Sichuan - Vibration absorption - Vibration reduction effects - Vibration reductions

Classification code: 401.1 Bridges

Bridges

- 407.1 Maritime Structures

Maritime Structures

- 408 Structural Design

Structural Design

- 484 Seismology

Seismology

DOI: 10.12989/sem.2018.66.6.749

Funding Details: Number; Sponsor: 2013CB036206; Basic Research Program of Jiangsu Province - Acronym; Sponsor: EL; Engineering Laboratory - Acronym; Sponsor: SWJTU; Southwest Jiaotong University

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

22. Evaluation of self-healing performance of asphalt concrete for low-temperature fracture using semicircular bending test

Accession number: 20182705400672

Authors: Fan, Shiping (1); Wang, Hao (2); Zhu, Hongzhou (1); Sun, Wei (1)

Author affiliation: (1) School of Civil and Construction Engineering, Chongqing Jiaotong Univ., Chongqing; 400074, China; (2) Dept. of Civil and Environmental Engineering, Rutgers, State Univ. of New Jersey, Piscataway; NJ; 08854, United States

Corresponding author: Zhu, Hongzhou(zhuhongzhouchina@126.com)

Source title: Journal of Materials in Civil Engineering

Abbreviated source title: J. Mater. Civ. Eng.

Volume: 30

Issue: 9

Issue date: September 1, 2018

Publication year: 2018

Article number: 04018218

Language: English

ISSN: 08991561

Document type: Journal article (JA)

Publisher: American Society of Civil Engineers (ASCE)

Abstract: This study aims to evaluate fracture resistance and self-healing performance of asphalt concrete at low temperatures using a semicircular bending (SCB) test. Three asphalt mixtures with different types of asphalt binder were used. The applied load and crack opening tip displacement (CTOD) were measured to calculate fracture energy and the critical release rate of fracture energy (J-integral). The self-healing indexes (HIs) were defined as the ratios of fracture energy, peak load, and J-integral obtained before and after healing, respectively. The self-healing performance of asphalt mixture was investigated considering different healing temperatures, healing time, and initial crack lengths (notch depths). The results showed that the styrene-butadiene-styrene (SBS) modified asphalt mixture possessed the highest fracture resistance, as compared to the asphalt mixture modified by rubber compound and the asphalt mixture with conventional 70# asphalt binder. The self-healing ability of the asphalt mixture increased with the increase of healing temperature and healing time; while it decreased with the increase of notch length. The optimum healing temperature was determined to be 60°C at the same healing time of 8 h, whereas the optimum healing time was found to be complicated depending on mixture type. Each asphalt mixture exhibited different healing abilities, depending on healing temperature, healing time, and the performance indicator of healing index. © 2018 American Society of Civil Engineers.

Number of references: 28

Main heading: Fracture

Controlled terms: Asphalt concrete - Asphalt mixtures - Binders - Concrete testing - Concretes - Cracks - Fracture energy - Fracture toughness - Mixtures - Styrene - Temperature

Uncontrolled terms: Healing temperature - Healing time - Performance indicators - Self-healing - Self-healing abilities - Semi-circular bending - Semi-circular bending test - Styrene butadiene styrene modified asphalt

Classification code: 411.1 Asphalt

Asphalt

- 412 Concrete

Concrete

- 641.1 Thermodynamics

Thermodynamics

- 803 Chemical Agents and Basic Industrial Chemicals

Chemical Agents and Basic Industrial Chemicals

- 804.1 Organic Compounds

Organic Compounds

- 931.1 Mechanics

Mechanics

- 951 Materials Science

Materials Science

Numerical data indexing: Temperature 3.33e+02K, Time 2.88e+04s

DOI: 10.1061/(ASCE)MT.1943-5533.0002426

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

23. Economic and environmental evaluations in the two-echelon collaborative multiple centers vehicle routing optimization

Accession number: 20182705406548

Authors: Wang, Yong (1, 2); Zhang, Shuanglu (1); Assogba, Kevin (3); Fan, Jianxin (4); Xu, Maozeng (1); Wang, Yinhai (5, 6)

Author affiliation: (1) School of Economics and Management, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Management and Economics, University of Electronic Science and Technology, Chengdu; 610054, China; (3) School of Civil and Construction Engineering, Oregon State University, Corvallis; OR; 97330, United States; (4) School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (5) Department of Civil and Environmental Engineering, University of Washington, Seattle; WA; 98195-2700, United States; (6) Transportation Data Science Research Center, College of Transportation Engineering, Tongji University, Shanghai; 201804, China

Corresponding author: Wang, Yong(yongwx6@gmail.com)

Source title: Journal of Cleaner Production

Abbreviated source title: J. Clean. Prod.

Volume: 197

Issue date: 1 October 2018

Publication year: 2018

Pages: 443-461

Language: English

ISSN: 09596526

CODEN: JCROE8

Document type: Journal article (JA)

Publisher: Elsevier Ltd

Abstract: The two-echelon collaborative multiple centers vehicle routing problem (2E-CMCVRP) integrates collaboration mechanism and the vehicle routing problem. Combining k-means clustering algorithm and an improved Non-dominated Sorting Genetic Algorithm-II (Im-NSGA-II), this paper proposes a three-phase approach to simultaneously minimize the aggregate operating cost and reduce carbon dioxide emission. To ensure the initial population’s quality, the sweep algorithm is integrated as modification of the standard NSGA-II. The chromosome population consists of multiple depots and corresponding customer nodes independently assessed to find local solutions, and latterly combined to yield suboptimal routes. The nodes scan principle of the sweep algorithm is employed to enforce optimization constraints, and the non-dominated sorting of the population efficiently improves the solution search accuracy. Further, the Minimum Cost-Remaining Savings (MCRS) method is used to determine appropriate profit distribution schemes, and the selection of the optimal sequential coalition is executed on the basis of the strictly monotonic path principle. Computational comparisons on benchmark instances indicate the superiority of Im-NSGA-II over NSGA-II and MOGA, and an empirical study in Chongqing, China confirms the practicability of our solution approach. The evaluation of MCRS solution’s stability displays outperformance over other methods including the Shapley value model, CGA and GQP, and suitable coalition sequences are selected and assessed to improve the efficiency of logistics network optimization as well as the achievement of environment-friendly objectives. © 2018 Elsevier Ltd

Number of references: 42

Main heading: Clustering algorithms

Controlled terms: Benchmarking - Carbon dioxide - Genetic algorithms - Global warming - Logistics - Petroleum reservoir evaluation - Profitability - Vehicle routing - Vehicles

Uncontrolled terms: Carbon dioxide emissions - Collaboration mechanisms - Computational comparisons - Economic and environmental assessments - K-Means clustering algorithm - Non-dominated sorting genetic algorithm - ii - Profit distributions - Vehicle routing optimization

Classification code: 443.1 Atmospheric Properties

Atmospheric Properties

- 512.1.2 Petroleum Deposits : Development Operations

Petroleum Deposits : Development Operations

- 804.2 Inorganic Compounds

Inorganic Compounds

- 903.1 Information Sources and Analysis

Information Sources and Analysis

- 911.2 Industrial Economics

Industrial Economics

DOI: 10.1016/j.jclepro.2018.06.208

Funding Details: Number; Sponsor: 16SKGH067; Chongqing Municipal Education Commission - Number; Sponsor: 17SKG067; Chongqing Municipal Education Commission - Number; Sponsor: 2016M600735; China Postdoctoral Science Foundation - Number; Sponsor: 2017T100692; China Postdoctoral Science Foundation - Number; Acronym; Sponsor: 41401255; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 71402011; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 71432003; NSFC; National Natural Science Foundation of China - Number; Acronym; Sponsor: 71471024; NSFC; National Natural Science Foundation of China

Compendex references: YES

Database: Compendex

Data Provider: Engineering Village

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