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Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:系统工程理论与实践

Issue:10

Page Number:2675-2686

ISSN No.:1000-6788

Abstract:Due to the long distances between supply nodes and demand nodes or the cut off of the key roads to affected areas, it is difficult or impossible to quickly transport medical supplies to affected areas only by vehicles, so we focus on the intermodal transportation of medical supplies by helicopters and vehicles. To overcome the shortages of the common fuzzy c-means (FCM) for selecting emergency distribution points (EDCs) and partitioning medical aid points (MAPs), we consider the constraints of the number of MAPs in each partition to develop an improved FCM approach with number constraints (FCMwNC) for selecting EDCs and partitioning MAPs; then, we consider the helicopter flight time, the transit time at EDCs and the vehicle travel time to build an intermodal transportation optimization model of medical supplies, which could produce the intermodal transportation routes. According to numerical experiments, we observed the following findings: 1) The developed FCMwNC method could overcome the imbalance of the number of MAPs in the FCM partitioning, which thus effectively shortens the biggest waiting time among MAPs; 2) As the increase of the number of selected EDCs, the total intermodal transportation time, average waiting time and biggest waiting time have decreasing trends; 3) As the increase of the transit efficiency, the total intermodal transportation time, average waiting time and biggest waiting time would be shortened with smaller ranges. ©, 2015, Systems Engineering Society of China. All right reserved.

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