Research on Quality Management of Urban Rail Transit Vehicle Frame Overhaul Project -- Modeling and Analysis of Railway Passenger Flow Forecast During the Spring Festival -- Seasonal and Period Division Method for Dynamic Passenger Flow of High-Speed Railway -- A Study of High-Speed Railway Train Merger and Adjustment Based on Regional Network -- Research on Platform Door Setting of Suburban Railway of Mass Transit Type -- Research on Equipment Operation and Maintenance Management Technology of Large Railway Passenger Station -- Research on Adaptability Evaluation Between Express and Local Train Operation Plan of Urban Rail Transit and Passenger Flow Demand -- Research on the Network Operation Mode of High-speed Rail Express -- Solving a Locomotive Routing Problem of Heavy Haul Railways -- A Study of Optimization of Dynamic Freight Train Diagrams Based on Market-orientation -- Research on Equipment Management System of Railway Passenger Station based on High-Precision Positioning.