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Mathematical Problems in Engineering
Volume 2015, Article ID 164194, 7 pages
Research Article

Emergency Vehicle Scheduling Problem with Time Utility in Disasters

1College of Management, Shenzhen University, Shenzhen 518060, China
2Hefei Institute of Intelligent Machine, Chinese Academy of Sciences, Hefei 230031, China

Received 14 August 2014; Accepted 8 October 2014

Academic Editor: Yuping Wang

Copyright © 2015 Xiaobing Gan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents a flexible emergency rescue system which is chiefly composed of three parts, namely, disaster assistance center, relief vehicles, and disaster areas. A novel objective of utility maximization is used to evaluate the entire system in disasters. Considering the uncertain road conditions in the relief distribution, we implement triangular fuzzy number to calculate the vehicle velocity. As a consequence, a fuzzy mathematical model is built to maximize the utility of emergency rescue system and then converted to the crisp counterpart. Finally, the results of numerical experiments obtained by particle swarm optimization (PSO) prove the validity of this proposed mathematical model.