The Study Of Evolution And Emulation Of The Coordination Physical Distribution Network For Earthquake Emergency Based On CAS Theory

In recent years, the earth enters into a period during which earthquakes frequentlyhappen, such as the “7.28” Hebei, Tangshan Province earthquake (1976, Ms7.8), the “5.12”Wenchuan, Sichuan Province earthquake (2008, Ms8.0), the “4.14” Yushu, Qinghai Provinceearthquake (2010, Ms7.1), the “1.12” Haiti earthquake (2010, Ms7.0), the “2.27” Chileearthquake (2010, Ms8.8), and so on. These series of occasional events result in a huge lossof staff and economic assets, which accordingly have a severe impact on socioeconomicdevelopment, people’s life and social stability. In earthquake emergency rescue activities, alarge amount of emergency resources (including relief workers) are needed to support andconduct efficient emergency handling work, including medical aid and transfer of thewounded, sanitary and anti-epidemic, stabilizing order, and arranging for victims. Besides, theissue how each party can effectively cooperate also directly affects the efficiency and resultsof earthquake emergency rescue activities.This paper presents that the coordination physical distribution network for earthquakeemergency has some features of complicated systems, such as aggregation, nonlinearity, flow,and diversity. Then we analyze the evolution mechanism of the whole network based on theecho model and its extensive model, and establishes three agents, which are control center,logistics point and disaster point, of the colonial coordination physical distribution networkfor earthquake emergency. In this paper, the “stimulation-reaction” model of the complexadaptive system theory is used to analyze the agent evolution mechanism, and how the agentof the coordination physical distribution network for earthquake emergency generatesdifferent adaptive strategies, in terms of stimulated risk. Finally, under the instruction of thecomplex adaptive system theory, Agent modeling, in the method of the complex systemmodeling, is adopted in order to establish individual Agent model with internal structure forthe three agents-control center, logistics point and disaster point, of the colonial coordinationphysical distribution network for earthquake emergency, and establish the multi-agentmodeling structure as well as Agent interactive rules. The coordination physical distributionnetwork for earthquake medical supplies is chosen as the emulational object, and the NetLogoemulational platform is chosen as the emulational tool. The key factors of affecting the speed of the coordination physical distribution network for earthquake emergency and the degree ofagent coordination are listed in this paper, which is based on observing the operation patternsof agent coordination in the coordination physical distribution network for earthquakeemergency, in order to enhance the efficiency of the operation of physical distributionnetworks and fasten the speed of rescuing. It is hopeful that the study in this article canprovide certain reference value for the coordination physical distribution network forearthquake emergency and other fields related to it.