1Exploration on the comprehensive utilization of underground space in China's smart cityWANG Mengshu, WANG Yonghong, TAN Zhongsheng, HUANG Mingli, WANG Xiuying, YU Tongzhen, ZHOU Zhenliang, ZHANG Zhi'en, CHEN Xueying1-82Analysis of surrounding rock stability and support action in tunnelsZHANG Dingli9-183Research on energy-efficient driving strategy in Beij ing Yizhuang lineTANG Tao, XUN Jing, CAO Fang, WANG Yihui, SU Shuai19-244Scientific and technological innovation of rail transportation---trends and tasksJIA Limin, QIN Yong, WANG Li25-315Some key problems and suggestions for the development of urban transportation in ChinaSHAO Chunfu32-366Application of coupled discrete element-finite difference method in railway ballast bed researchGAO Liang, XU Yang37-447Application of Harmony Search-Dij kstra hybrid algorithm in railway logistics center locationJIN Guowei, HE Shiwei, LI Haodong, HE Bisheng, YIN Weichuan45-528Multi-obj ective model and algorithm for optimizing the location of railway logistics centers based on different gradesWANG Pei, ZHANG Xiaodong, LANG Maoxiang, HAN Boling, KANG Fuquan53-599Smart collaboration NETwork system and applicationsZHANG Hongke60-6410Research on the theories and methods of wireless channels under high speed railway scenariosZHONG Zhangdui, AI Bo, GUAN Ke, HE Ruisi, XIONG Lei65-6911Anti-electromagnetic interference technology for high-speed railway signaling systemWEN Yinghong70-7412Verification technique based on train-ground correlation analysis for false unoccupancy of track circuitYANG Shiwu, MA Canghai, ZHAO Ming, TANG Qiankun75-8113A review on image semantic segmentation based on DCNNWEI Yunchao, ZHAO Yao82-9114State of health diagnosis and estimation of power lithium-ion batteries based on open circuit voltage characteristicJIANG Jiuchun, MA Zeyu, LI Xue, ZHANG Caiping, ZHANG Weige92-9815Fantastic heat transfer characteristics of magnetic fluidLI Decai, CHENG Yanhong99-10716Study on flame stability of hydrogen blended low calorific value gasesZHANG Xin, ZHENG Shizhuo, HOU Xiaosen, ZHANG Jibao108-11517Simulation analysis on layout optimition of electric multiple units roof high-voltage systemLIANG Jianying, LIU Zhiming116-12118The adj ustment to transportization stages divisionRONG Chaohe122-12919Economic sustainability and development path of high-speed railway in ChinaDING Huiping, HE Lin, LI Yuanhui, XIAO Xiang130-136 