- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | WU Jiani, MENG Zejia. Joint Dispatch of Cross-Regional Emergency Supplies Considering Differential Disaster Severity[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20250136
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To enhance the response efficiency of cross-regional emergency rescue under major natural disasters, considering differential disaster severity in affected areas, the optimization of cross-regional emergency supplies dispatching with combined transport was conducted. Firstly, a differentiated disaster classification strategy and a comprehensive evaluation system were proposed. The CRITIC-TOPSIS method was employed to determine the risk level of each region. Then, a bi-level programming model was developed, in which the upper level minimizes the total emergency response time and the lower level maximizes fairness. The upper level incorporated the Beetle Antennae Search to improve the Particle Swarm Optimization algorithm for finding solutions, thereby determining the shortest time and the volume of supplies transported from supply points to distribution centers. This provides basic data and time constraints for the lower level. The lower level uses the NSGA-III to solve the supplies allocation problem, where its results influence the distribution of supplies to affected areas in the upper-level model. This interdependence may lead to adjustments in the upper-level transportation scheme, further optimizing the overall objective. Finanly, taking 5•12 Wenchuan Earthquake as a case study for the simulation, the results indicate that, in terms of the total emergency response time, the scheme considering disaster severity classification is 2.53% shorter than that without considering disaster severity classification. Regarding fairness, the scheme under disaster severity classification shows a positive correlation between the satisfaction rate of emergency supplies demands and the disaster severity level at different disaster-affected points, thereby better reflecting the differentiated strategies based on disaster severity levels and the fairness of emergency supplies dispatch.
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