Xiao H.H.,Nanjing Southeast University |
Lu J.,Nanjing Southeast University |
Ma Q.,National Road Traffic Management Engineering Technology Research Center |
Wu Y.,Nanjing Southeast University |
Lin Y.Q.,Fuzhou Planning and Design Research Institute
Applied Mechanics and Materials | Year: 2014
Parking charges is a widely used and effective means to improve parking demand management. Based on the structural equation theory, the model about the influence factors related to the acceptability of parking charges was established. Eight factors were selected for the modeling, including problem perception, willingness, perceived effectiveness, perceived benefits, perceived freedom, perceived fairness, social norms and accountability. And a survey of two charging schemes was undertaken in Nanjing concerning influence factors of the acceptability. Model verification and path coefficient test were conducted based on the established structural equation model by AMOS. It is indicated that the most significant factors affecting the acceptability of parking charges measure are perceived effectiveness and willingness. Finally, according to the conclusions, the suggestions of improving acceptability of parking charges were presented. © (2014) Trans Tech Publications, Switzerland.
Yang Z.,Jilin University |
Yu Y.,Jilin University |
Sun W.,Fuzhou Planning and Design Research Institute
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | Year: 2013
Urban traffic situations can become highly uncertain, because of bad road conditions or traffic jams, which can lead to unpredictable emergencies. By introducing the influencing factors of road network reliability and travel time reliability, a routing model was established to help with emergency rescues, which is combined with time variability of the traffic assignment based on bi-level programming. Furthermore, the mathematical formulations representing emergency circumstances were proposed and simulated. The results demonstrate the effectiveness of our bi-level rescue routing model by comparing it with the traditional single-target routing model through simulated experiments. And the travel time delay is significantly reduced, which means an improved efficiency with the emergency rescue response.
Jiang S.-F.,Fuzhou University |
Fu D.-B.,Fuzhou Planning and Design Research Institute |
Wu S.-Y.,Fuzhou University
Mathematical Problems in Engineering | Year: 2014
To reduce the runtime and ensure enough computation accuracy, this paper proposes a structural reliability assessment method by the use of sensitivity analysis (SA) and support vector machine (SVM). The sensitivity analysis is firstly applied to assess the effect of random variables on the values of performance function, while the small-influence variables are rejected as input vectors of SVM. Then, the trained SVM is used to classify the input vectors, which are produced by sampling the residual variables based on their distributions. Finally, the reliability assessment is implemented with the aid of reliability theory. A 10-bar planar truss is used to validate the feasibility and efficiency of the proposed method, and a performance comparison is made with other existing methods. The results show that the proposed method can largely save the runtime with less reduction of the accuracy; furthermore, the accuracy using the proposed method is the highest among the methods employed. © 2014 Shao-Fei Jiang et al.