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1. Mechanism of Safety Hazard Investigation for Metro Contruction | |||
LI Meng,CHEN Zhixin | |||
Transportation Engineering 11 May 2023 | |||
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Abstract:The investigation of safety hazards is essential role in metro construction. However, due to many regulations and participants\' opinions needing to be considered, current safety hazards identified against the rules often need help with challenges such as being time-consuming, poor authority, poor traceability, or lack of real-time information. This study develops a novel blockchain-based safety hazard regulations storage system(SHRSS) and safety hazard monitoring system(SHMS) for metro construction to address these issues, expanding the use of blockchain in metro construction. The SHRSS constructs a safety hazard regulations database, standardized regulations, and stores in blocks. The SHMS builds a safety hazard information-sharing management blockchain, allowing each monitoring party to participate in risk monitoring. The paper draws discussions and summarizes the primary scientific contribution. | |||
TO cite this article:LI Meng,CHEN Zhixin. Mechanism of Safety Hazard Investigation for Metro Contruction[OL].[11 May 2023] http://en.paper.edu.cn/en_releasepaper/content/4760747 |
2. Study on the Three-dimensional Loading Optimization Problem of Freight Transshipment | |||
Bu Lei,Yin Chuanzhong | |||
Transportation Engineering 15 December 2010 | |||
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Abstract:In this paper, the three-dimensional bin packing optimization for freight transshipment in multimodal transportation is considered. The problem is to load a set of different size regular goods with given quantities in containers at the container transfer station, and the objective is to minimize the number of containers needed. The authors set up the mathematic model considering the general characteristic of container multi-modal transportation, such as the constraints of load capacity, loading mass, direction and sequence of placement, and loading stability. At the same time, the authors also introduce the parameter of freight transportation time window, which is decided by freight train formation plan and transit deadline of goods. The authors put out an immune algorithm for the problem to enforce constringency. In this algorithm, effective antibody coding is designed in view of constraints of load capacity, loading mass, direction and sequence of placement, and affinity function is designed in view of constraints of loading stability and freight transportation time window. Computer simulation shows the efficiency and validity of the model and algorithm. | |||
TO cite this article:Bu Lei,Yin Chuanzhong. Study on the Three-dimensional Loading Optimization Problem of Freight Transshipment[OL].[15 December 2010] http://en.paper.edu.cn/en_releasepaper/content/4397536 |
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