As natural disasters attract extensive attention worldwide,it is significant for governments and researchers to determine how to deliver emergency supplies after natural disasters.Considering the disaster victims'...As natural disasters attract extensive attention worldwide,it is significant for governments and researchers to determine how to deliver emergency supplies after natural disasters.Considering the disaster victims' urgent needs for supplies after the disaster,based on the previous research,the path planning model from the shortest path and the optimal time was created in this paper.As in the actual road the outbreak of emergencies might cause some secondary disasters,including landslides triggered by heavy rain,paralysis of traffic together with a large crowd caused by earthquakes,the theory and method of the complex network to explore the topological structure characteristics of the whole network in the affected area were applied.Then,combining with the actual situation of the road network,the reliability analysis of the points,edges as well as topological structures were presented and a mathematical model based on reliability was proposed.Finally,two kinds of emergency logistics path planning models were compared and analyzed by some examples.The results showed that the relationship between time optimality and reliability was relevant.Emergency logistics path planning should not only consider the optimal transportation time of emergency logistics,but also pay attention to the reliability of transportation from a global perspective.展开更多
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文摘As natural disasters attract extensive attention worldwide,it is significant for governments and researchers to determine how to deliver emergency supplies after natural disasters.Considering the disaster victims' urgent needs for supplies after the disaster,based on the previous research,the path planning model from the shortest path and the optimal time was created in this paper.As in the actual road the outbreak of emergencies might cause some secondary disasters,including landslides triggered by heavy rain,paralysis of traffic together with a large crowd caused by earthquakes,the theory and method of the complex network to explore the topological structure characteristics of the whole network in the affected area were applied.Then,combining with the actual situation of the road network,the reliability analysis of the points,edges as well as topological structures were presented and a mathematical model based on reliability was proposed.Finally,two kinds of emergency logistics path planning models were compared and analyzed by some examples.The results showed that the relationship between time optimality and reliability was relevant.Emergency logistics path planning should not only consider the optimal transportation time of emergency logistics,but also pay attention to the reliability of transportation from a global perspective.
