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1,378 results on '"Liu, Chenglin"'

166. Optimizing Train Timetable Based on Departure Time Preference of Passengers for High-Speed Rails

Author

Huang, Zhipeng, Niu, Huimin, Gao, Ruhu, Fan, Haoyu, and Liu, Chenglin

Subjects
Travel -- Usage -- Analysis, Passenger rail services -- Usage, High speed trains -- Usage, Energy consumption -- Analysis -- Usage
Abstract

Passengers would like to choose the most suitable train based on their travel preferences, expenses, and train timetable in the high-speed railway corridor. Meanwhile, the railway department will constantly adjust the train timetable according to the distribution of passenger flows during a day to achieve the optimal operation cost and energy consumption saving plan. The question is how to meet the differential travel needs of passengers and achieve sustainable goals of service providers. Therefore, it is necessary to design a demand-oriented and environment-friendly high-speed railway timetable. This paper formulates the optimization of train timetable for a given high-speed railway corridor, which is based on the interests of both passengers and transportation department. In particular, a traveling time-space network with virtual departure arc is constructed to analyze generalized travel costs of passengers of each origin-destination (OD), and bilevel programming model is used to optimize the problem. The upper integer programming model regards the minimization of the operating cost, which is simplified to the minimum traveling time of total trains, as the goal. The lower level is a user equilibrium model which arranges each OD passenger flow to different trains. A general advanced metaheuristic algorithm embedded with the Frank-Wolfe method is designed to implement the bilevel programming model. Finally, a real-world numerical experiment is conducted to verify the effectiveness of both the model and the algorithm., Author(s): Zhipeng Huang (corresponding author) [1]; Huimin Niu [1]; Ruhu Gao [1]; Haoyu Fan [1]; Chenglin Liu [2] 1. Introduction High-speed railway (HSR) is a high-quality travel service provided by [...]

Published
2021
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167. Short Text Feature Enrichment Using Link Analysis on Topic-Keyword Graph

Author

Wang, Peng, Zhang, Heng, Xu, Bo, Liu, Chenglin, Hao, Hongwei, Junqueira Barbosa, Simone Diniz, Series editor, Chen, Phoebe, Series editor, Cuzzocrea, Alfredo, Series editor, Du, Xiaoyong, Series editor, Filipe, Joaquim, Series editor, Kara, Orhun, Series editor, Kotenko, Igor, Series editor, Sivalingam, Krishna M., Series editor, Ślęzak, Dominik, Series editor, Washio, Takashi, Series editor, Yang, Xiaokang, Series editor, Zong, Chengqing, editor, Nie, Jian-Yun, editor, Zhao, Dongyan, editor, and Feng, Yansong, editor

Published
2014
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168. Automatic Non-negative Matrix Factorization Clustering with Competitive Sparseness Constraints

Author

Liu, Chenglin, Ma, Jinwen, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Kobsa, Alfred, editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Weikum, Gerhard, editor, Goebel, Randy, editor, Tanaka, Yuzuru, editor, Wahlster, Wolfgang, editor, Siekmann, Jörg, editor, Huang, De-Shuang, editor, Jo, Kang-Hyun, editor, and Wang, Ling, editor

Published
2014
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169. Unsupervised Image Segmentation Based on Contourlet Texture Features and BYY Harmony Learning of t-Mixtures

Author

Liu, Chenglin, Ma, Jinwen, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Kobsa, Alfred, editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Weikum, Gerhard, editor, Huang, De-Shuang, editor, Bevilacqua, Vitoantonio, editor, and Premaratne, Prashan, editor

Published
2014
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170. Evaluating the value of synchrotron radiation phase-contrast CT imaging in the study of knee joint microstructure

Author

Tang Meibai, Zhi Richeng, Sun Changyi, Wang Xiaohua, and Liu Chenglin

Subjects
Environmental sciences, GE1-350
Abstract

The knee joint is one of the tissues that often appear diseased, and the pathogenesis owing to its structure. Therefore, the micro-structure of the knee joint was studied by synchrotron radiation phasecontrast CT imaging (SRPCI-CT). The contrast and the sharpness of the reconstructed slice were calculated and analysed. From these results, the layer structure of the joint tissue can be seen. The cartilage layer (including the meniscus) is about 1.44 mm, and the epiphyseal layer is about 2.25 mm, which conforms to the actual situation of rat knees. From the 3D images, the structure of the meniscus and the epiphyseal bone can be observed. The epiphyseal bone line is also particularly obvious. Simultaneously, the epiphyseal bone also has a mesh structure, which has the characteristics of both cartilage and tibia. Further research on the tibia can determine that the trabecular bone line is about 130 microns. Finally, the bone volume fraction (BVF) of the joint, the data also reflect the existence of a layer structure, and its scale distribution is consistent with the results of sharpness and contrast analysis. The SRPCI-CT can play an important role in the study micro-structure of joints.

Published
2021
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171. Synchrotron Radiation Applications in Medicine

Author

Peng, Yifeng, primary, Wang, Liangqi, additional, Liu, Chenglin, additional, Bravin, Alberto, additional, Li, Gang, additional, Chen, Shaoliang, additional, Wang, Yongting, additional, Yang, Guo-Yuan, additional, and Zhang, Xinyi, additional

Published
2018
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173. Controlling effects of pore‐throat structure and fractal characteristics on the physical properties of ultra‐low permeability sandstone reservoirs: A case study of the sixth member of the Yanchang Formation in the Xiaojiahe area, Ordos Basin

Author

Li, Guoxiong, primary, Liu, Chenglin, additional, Zhou, Ya‐nan, additional, Wu, Hanning, additional, Awan, Rizwan Sarwar, additional, Shi, Fei, additional, Wu, Yunfei, additional, Zang, Qibiao, additional, and Wu, Yuping, additional

Published
2023
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