全部文献期刊会议图书|学者科研项目
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作者:Keping Li , Shanshan Wang
来源:[J].Safety Science(IF 1.359), 2018, Vol.109, pp.398-402
摘要:Abstract(#br)In railway systems, risk monitoring and accident causation analysis are important processes towards operational safety. This paper divides accident causal factors in a railway system into several error types, such as human and signal, and proposes a model based on a ...
作者:Dongyang Yan , Keping Li , Jingjing Ye
来源:[J].Physica A: Statistical Mechanics and its Applications(IF 1.676), 2019, Vol.531
摘要:Abstract(#br)Correlation of words in the text is of great importance in text analysis like text retrieval, keywords extraction, and text clustering. For short text, because of the limited information of text content, it is difficult to catch the correlation well among words....
作者:... Ziyou Gao , Fang Cao , Keping Li
来源:[J].Computers & Industrial Engineering(IF 1.516), 2018
摘要:Abstract(#br)Aimed to increase usage of regenerative energy and stabilize voltage variation of traction supply grid, an energy-saving model with on-board energy storage devices is proposed by jointly optimizing the running time and recommended speed profile of trains over the who...
作者:Xiaoming Xu , Keping Li , Xiaoshan Lu
来源:[J].Computers & Industrial Engineering(IF 1.516), 2017
摘要:Abstract(#br)This paper aims to assign locomotives to unscheduled trains with pre-planned departure times instead of trains with a pre-scheduled timetable on a single-track railway line. Considering both rigorous and relaxed situations, this paper formulates two mixed-integer pro...
作者:Keping Li , Hangfei Huang , Paul Schonfeld
来源:[J].Journal of Advanced Transportation(IF 0.733), 2018, Vol.2018
摘要:For the train timetabling problem (TTP) in a metro system, the operator-oriented and passenger-oriented objectives are both important but partly conflicting. This paper aims to minimize both objectives by considering frequency (in the line planning stage) and train cost (in the v...
作者:Keping Li , Zhigang Liu
来源:[J].Journal of Advanced Transportation(IF 0.733), 2019, Vol.2019
摘要:The conventional stage-based signal control approach with uniform phase structure has been dominantly applied at signalized intersections in China. However, this approach cannot efficiently handle mixed traffic flows with unbalanced volumes. Moreover, this signal control app...
作者:Keping Li , Dan Zhao ...
来源:[J].Energies(IF 1.844), 2019, Vol.12 (10)
摘要:Root cause identification is an important task in providing prompt assistance for diagnosis, security monitoring and guidance for specific routine maintenance measures in the field of railway transportation. However, most of the methods addressing rail faults are based on state d...
作者:Xiaoming Xu , Keping Li , Lixing Yang
来源:[J].Applied Mathematical Modelling(IF 1.706), 2016, Vol.40 (2), pp.1446-1466
摘要:Abstract(#br)Considering an incident on a track of a double-track subway line, this paper formulates an optimization model to find near-optimal rescheduled timetables with the least total delay time compared to the original one, in which crossover tracks connecting two parallel s...
作者:Xiaoming Xu , Keping Li , Lixing Yang
来源:[J].Transportation Research Part B(IF 2.944), 2015, Vol.78, pp.364-384
摘要:Abstract(#br)To further improve the utilization rate of railway tracks and reduce train delays, this paper focuses on developing a high-efficiency train routing and timetabling approach for double-track railway corridors in condition that trains are allowable to travel on re...
作者:Yu Mei , Keshuang Tang , Keping Li
来源:[J].Transportation Research Part C(IF 2.006), 2015, Vol.57, pp.55-67
摘要:Abstract(#br)This paper proposes three enhanced semi-supervised clustering algorithms, namely the Constrained-K-Means (CKM), the Seeded-K-Means (SKM), and the Semi-Supervised Fuzzy c-Means (SFCM), to identify probe vehicle trajectories in the mixed traffic corridor. The prop...

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