SSCI 1条
Record 1 of 1
A system dynamics model for simulating urban sustainability performance: A China case study
Authors: Tan, YT; Jiao, LD; Shuai, CY; Shen, LY
JOURNAL OF CLEANER PRODUCTION
Volume: 199 Pages: 1107-1115 Published: OCT 20 2018 Language: English Document type: Article
DOI: 10.1016/j.jclepro.2018.07.154
Abstract:
China has been experiencing a rapid urbanization process. Various relevant policies and strategies have been implemented for sustainable urbanization. For a better understanding of sustainable urbanization, many research efforts have been made on urban sustainability assessment. The traditional indicator index is normally used to evaluate the urban sustainability performance. However, the urban development is a complex system, and the existing methods cannot reflect the systemic interactions among variables. Therefore, this paper aims to develop a system dynamics model for simulating urban sustainability performance. The system dynamics model comprises four sub-systems, namely, the economic sector, social sector, environment sector and resource sector. Then, the system dynamics model is used to simulate the sustainability performance of the city, Beijing, with three scenarios. The results indicate that the system dynamics modelling is a useful tool for simulating urban sustainability performance and can help policy makers formulate relevant strategies for a better sustainable development of cities. (C) 2018 Elsevier Ltd. All rights reserved.
SCI 6条
Record 1 of 6
External Factors Affecting Determination of Mineral Powder Contact Angle with Capillary Rise Method
Authors: Kong, LY; Li, T; Cao, HP; Zhang, YZ
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
Volume: 30 Issue: 11 Published: NOV 2018 Language: English Document type: Article
DOI: 10.1061/(ASCE)MT.1943-5533.0002478
Abstract:
The difficulty of standardizing the test conditions for the contact angle (CA) of a mineral powder (MP) leads to results with poor repeatability. To solve this issue, external factors that influence the CA test of a MP were investigated, and methods for controlling these factors are proposed. According to the test results, the compactness of the powder column impacts the discreteness of the MP CA remarkably in such a way that more stable compactness results in a more discrete CA. Furthermore, the number of layers and height of filter papers wrapped around the bottom of the glass tube and the selection of liquids with known surface-energy parameters impact the CA measurement of the MP directly, particularly for MPs with larger grains. More layers of wrapped filter paper are needed when MPs with larger grains are tested. The top of the filter papers wrapped around the bottom of the glass tube must be higher than the liquid level. Polar liquids with zero dispersive component of the surface-energy parameter should be selected to test MPs with larger grains.
Record 2 of 6
A system dynamics model for simulating urban sustainability performance: A China case study
Authors: Tan, YT; Jiao, LD; Shuai, CY; Shen, LY
JOURNAL OF CLEANER PRODUCTION
Volume: 199 Pages: 1107-1115 Published: OCT 20 2018 Language: English Document type: Article
DOI: 10.1016/j.jclepro.2018.07.154
Abstract:
China has been experiencing a rapid urbanization process. Various relevant policies and strategies have been implemented for sustainable urbanization. For a better understanding of sustainable urbanization, many research efforts have been made on urban sustainability assessment. The traditional indicator index is normally used to evaluate the urban sustainability performance. However, the urban development is a complex system, and the existing methods cannot reflect the systemic interactions among variables. Therefore, this paper aims to develop a system dynamics model for simulating urban sustainability performance. The system dynamics model comprises four sub-systems, namely, the economic sector, social sector, environment sector and resource sector. Then, the system dynamics model is used to simulate the sustainability performance of the city, Beijing, with three scenarios. The results indicate that the system dynamics modelling is a useful tool for simulating urban sustainability performance and can help policy makers formulate relevant strategies for a better sustainable development of cities. (C) 2018 Elsevier Ltd. All rights reserved.
Record 3 of 6
Modeling drivers' speed choice on roads with complex shapes based on the curvature of the preview trajectory
Authors: Xu, J; Zhao, J; Shao, YM
SIMULATION-TRANSACTIONS OF THE SOCIETY FOR MODELING AND SIMULATION INTERNATIONAL
Volume: 94 Issue: 10 Pages: 911-930 Published: OCT 2018 Language: English Document type: Article
DOI: 10.1177/0037549717751633
Abstract:
The target speed needs to be determined based on the geometry of the road ahead and current operational state in order to realize automated driving along complex mountain roads. However, existing speed prediction and V-85 models are unable to do so. This paper proposes a speed decision algorithm that is based on the curvature of the preview trajectory. Firstly, the trajectory point in each preview cross-section within the driver's sight window is determined; the curvature of the preview trajectory is calculated and used as input data. Secondly, an objective function is selected to set the speed control pattern: minimum travel time; maximum comfort; minimum deviation from the reference speed; or multiple weighted objectives. Thirdly, the speed value for the preview cross-section is solved by optimizing the selected objective function. As the sight window rolls ahead, the target speed can be determined along the traveling distance. Because the trajectory generated within the boundary of the pavement is used by the driver, parameters such as the change in curve radius, deflection angle, lane width, and spiral length can change the driving boundary, which can change the trajectory characteristics and thus affect the target speed. Therefore, the proposed algorithm is able to determine the speed for roads with complex shapes. The field validation and simulation cases demonstrated that the target speed profile of different driving patterns can be obtained for different combinations of trajectory and speed patterns. Thus, the model can simulate diverse real-world driving behaviors and explain the diversity in driving speeds of different drivers.
Record 4 of 6
An advanced vehicle-slab track interaction model considering rail random irregularities
Authors: Xu, L; Chen, ZW; Zhai, WM
JOURNAL OF VIBRATION AND CONTROL
Volume: 24 Issue: 19 Pages: 4592-4603 Published: OCT 2018 Language: English Document type: Article
DOI: 10.1177/1077546317731005
Abstract:
This paper investigates a more advanced vertical vehicle-slab track interaction model (VTIM) by considering the discontinuity of track slabs, besides, it can be degenerated to the traditional two-dimensional model conveniently. Moreover, a cyclic calculation method (CCM) is further developed to solve infinite length calculations. On this basis, the proposed dynamic model and CCM are validated by comparing with the more comprehensive three-dimensional train-track model and fixed-point excitation method. Then, from aspects of probability statistics and frequency analysis, an illustrative example is particularly conducted to comprehensively characterize the dynamic responses of vehicle-slab track systems, in which the representative and realistic rail irregularity sets simulated by the track irregularity probabilistic model are used as the loading inputs. Results show that, with a low consumption of computational time and computer memory, the dynamic results derived from VTIM and CCM have a high accuracy, which indicates that the proposed dynamic model and calculation method can be efficiently and accurately used to analyze train-slab track interactions.
Record 5 of 6
Phytoremediation of Mn-contaminated paddy soil by two hyperaccumulators (Phytolacca americana and Polygonum hydropiper) aided with citric acid
Authors: Yang, QW; Ke, HM; Liu, SJ; Zeng, Q
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume: 25 Issue: 26 Pages: 25933-25941 Published: SEP 2018 Language: English Document type: Article
DOI: 10.1007/s11356-018-2647-1
Abstract:
The purpose of this study was to investigate the phytoremediation potential of two hyperaccumulator plants, Phytolacca americana L. and Polygonum hydropiper L., on manganese-contaminated paddy soils. The biomass growth, Mn concentrations in plant tissues, and potential Mn removal efficiency from soils of these two plants were studied with citric acid, and the mechanisms of citric acid on these two plants were analyzed by examining the root activity, the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in leaves, as well as the concentrations of O-2(-) and H2O2 in leaves. The results showed that the biomass of these two plants were both promoted under low level of citric acid (3mmolkg(-1)). The concentration of Mn in the plants and the amount of Mn removed from the soil by the plants through harvesting were enhanced at low and intermediate (10mmolkg(-1)) citric acid application levels. The results also showed that root activity was enhanced at the low citric acid level and significantly inhibited under the intermediate and high levels (15mmolkg(-1)), which indicates the facilitative function of the low level of citric acid and the inhibitive function of the high level of citric acid application on plant biomass growth. Under the low and intermediate levels of citric acid application, O-2(-) in the plant leaves increased sharply, and the SOD, POD, and CAT activities also increased sharply, which made the level of H2O2 very similar to that of the control, ensuring the health of the plants. At the high level of citric acid application, however, the O-2(-) continued to rise sharply, while the activity of the three antioxidant enzymes declined sharply, causing the concentration of hydrogen peroxide to be much higher than that in the control, thus endangering the plants. The present study shows the potential of P. hydropiper for use in the phytoremediation of soil contaminated with a relatively low level of manganese.
Record 6 of 6
Behavior of Concrete-Filled Steel Tube Columns Subjected to Axial Compression
Authors: Li, PF; Zhang, T; Wang, CZ
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
Published: 2018 Language: English Document type: Article
DOI: 10.1155/2018/4059675
Abstract:
The behavior of concrete-filled steel tube (CFST) columns subjected to axial compression was experimentally investigated in this paper. Two kinds of columns, including CFST columns with foundation and columns without foundation, were tested. Columns of pure concrete and concrete with reinforcing bars as well as two steel tube thicknesses were considered. The experimental results showed that the CFST column with reinforcing bars has a higher bearing capacity, more effective plastic behavior, and greater toughness, and the elastoplastic boundary point occurs when the load is approximately 0.4-0.5 times of the ultimate bearing capacity. The hange of rock-socketed depth and the presence of steel tube will affect the ultimate bearing capacity of rock-socketed pile. The bearing capacities of the rock-socketed CFST columns are lower than those of rock-socketed columns without a steel tube under a vertical load; besides, the greater the rock-socketed depth, the greater the bearing capacity of the rock-socketed piles. In addition, a numerical comparison between the ultimate load and the theoretical value calculated from the relevant specifications shows that the ultimate load is generally considerably greater than the theoretical calculation results.
EI 17条
1. CH4 Fluxes During the Algal Bloom in the Pengxi River (CH4)
Qin, Yu (Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing; 400074, China); Zhang, Yu-Yang; Li, Zhe; Ma, Jian-Rong Source: Huanjing Kexue/Environmental Science, v 39, n 4, p 1578-1588, April 15, 2018 Language: Chinese
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
2. Fatigue assessment method of marine structures subjected to two Gaussian random loads
Ma, Yongliang (College of Shipping and Navy Architecture, Chongqing Jiaotong University, Chongqing, China); Han, Chaoshuai; Qu, Xianqiang Source: Ocean Engineering, v 165, p 107-122, 1 October 2018
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
3. An Optimal Operation Model for Hydropower Stations Considering Inflow Forecasts with Different Lead-Times
Zhang, Xiaoli (School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, China); Peng, Yong; Xu, Wei; Wang, Bende Source: Water Resources Management, 2018 Article in Press
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
4. Stability Switches and Hopf Bifurcation of a Neuron System with both Leakage and Distributed Delays
Yao, Yi (School of Mathematics, Nanjing Normal University, Nanjing; 210023, China); Xiao, Min; Cao, Jinde; Huang, Chengdai; Song, Qiankun Source: Neural Processing Letters, 2018 Article in Press
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
5. The effect of gender, occupation and experience on behavior while driving on a freeway deceleration lane based on field operational test data
Lyu, Nengchao (Intelligent Transportation Systems Research Center, Wuhan University of Technology, Wuhan; 430063, China); Cao, Yue; Wu, Chaozhong; Xu, Jin; Xie, Lian Source: Accident Analysis and Prevention, v 121, p 82-93, December 2018
Database: Compendex
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Data Provider: Engineering Village
6. Optimization of energy supply system under information variations based on gas stations queuing analyses
Xu, Guangcan (School of Economics and Management, Chongqing Jiaotong University, Chongqing, China); Xu, Maozeng; Wang, Yong; Liu, Yong; Assogba, Kevin Source: Systems Science and Control Engineering, v 6, n 2, p 10-23, July 20, 2018
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
7. Investigating the Mechanism of Out-of-Plane Deformation in Q345 Steel Single-pass Bead-on Welded Joint with External Restraint (Q345 )
Liu, Jianqiao (College of Materials Science and Engineering, Chongqing University, Chongqing; 400044, China); Li, Ziliang; Ren, Sendong; Liang, Wei; Deng, Dean Source: Jixie Gongcheng Xuebao/Journal of Mechanical Engineering, v 54, n 14, p 90-97, July 20, 2018 Language: Chinese
Database: Compendex
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Data Provider: Engineering Village
8. A Time-Efficient and Easy-to-Implement RFID Technology for Multiple Tags ()
Su, Jian (School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing; Jiangsu; 210044, China); Yang, Xiao-Jiao; Han, Yu Source: Tien Tzu Hsueh Pao/Acta Electronica Sinica, v 46, n 4, p 903-910, April 1, 2018 Language: Chinese
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
9. Relationship between particle micro and macro mechanical parameters of parallel-bond model ()
Abi, Erdi (School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing; 400045, China); Zheng, Ying-Ren; Feng, Xia-Ting; Cong, Yu Source: Yantu Lixue/Rock and Soil Mechanics, v 39, n 4, p 1289-1301, April 10, 2018 Language: Chinese
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
10. Behavior of Concrete-Filled Steel Tube Columns Subjected to Axial Compression
Li, Pengfei (Chongqing Jiaotong University, Chongqing; 400074, China); Zhang, Tao; Wang, Chengzhi Source: Advances in Materials Science and Engineering, v 2018, 2018
Database: Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider: Engineering Village
11. ZnO/ZnAl2O4 nanocomposite with 3D sphere-like hierarchical structure for photocatalytic reduction of aqueous Cr(VI)
Yuan, Xiaoya (College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing; 400074, China); Cheng, Xin; Jing, Qiuye; Niu, Jiawei; Peng, Dong; Feng, Zijuan; Wu, Xue Source: Materials, v 11, n 9, September 5, 2018
Database: Compendex
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Data Provider: Engineering Village
12. Multiple internal resonances and coupling process of cable-stayed bridge ()
Sun, Ceshi (College of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China); Zhao, Yaobing; Kang, Houjun; Zhao, Yueyu Source: Zhendong yu Chongji/Journal of Vibration and Shock, v 37, n 10, p 87-93, May 28, 2018 Language: Chinese
Database: Compendex
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Data Provider: Engineering Village
13. Mesoporous multi yolk-shell @mSiO2 nanoreactor for BPA degradation. (yolk-shellCo3O4@mSiO2A)
Ji, Fang-Ying (Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Chongqing University, Chongqing; 400045, China); Wang, Pan-Qiao; Chen, Qing-Kong Source: Zhongguo Huanjing Kexue/China Environmental Science, v 38, n 6, p 2124-2134, June 20, 2018 Language: Chinese
Database: Compendex
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Data Provider: Engineering Village
14. Application of elastic cable theory in design of reinforced earth structure ()
Wang, Zong-Jian (School of Civil Engineering, Chongqing University, Chongqing; 400044, China); Ma, Shu-Wen; Tang, Xiao-Shuang; Wu, Jin-Ming; Zhi, Xian-Ping; Lu, Liang Source: Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, v 40, n 1, p 122-129, January 1, 2018 Language: Chinese
Database: Compendex
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Data Provider: Engineering Village
15. Nonlinear Bond Model for the Dowel Action considering the Fatigue Damage Effect
Li, Pengfei (Department of Harbor, Waterway and Coastal Engineering, Chongqing Jiaotong University, Chongqing; 400074, China); Tan, Ni; Wang, Chengzhi Source: Advances in Materials Science and Engineering, v 2018, June 20, 2018
Database: Compendex
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Data Provider: Engineering Village
16. Dominant discontinuities based on stereographic projection and K-means clustering algorithm (K-)
Wang, Jun-Jie (Key Laboratory for Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing; 400074, China); Feng, Deng; Chai, He-Jun; Liu, Yun-Fei Source: Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, v 40, n 1, p 74-81, January 1, 2018 Language: Chinese
Database: Compendex
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Data Provider: Engineering Village
17. Study on Dynamic Pressure Characteristics of Vertical Pipe Bottom Under Transverse Vibration of Liquid Level Connected Pipes ()
Zhu, Shi-Feng (Chongqing Jiaotong University, Chongqing; 400074, China); Zhou, Zhi-Xiang; Wang, Zheng-Xing; Wu, Hai-Jun Source: Bridge Construction, v 48, n 3, p 55-60, June 28, 2018 Language: Chinese
Database: Compendex
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Data Provider: Engineering Village
