Abstract:

In the early stage of large-scale disaster relief， the untimely supply and uneven distribution of emergency supplies will cause certain negative psychological emotions among the victims， which， if not eliminated in time， will most likely lead to irrational behavior of the victims and affect the development and efficiency of the relief work.To address the problem， deprivation cost is introduced into post-disaster emergency management research， comprehensively considering the negative psychological emotions of disaster victims due to material scarcity and uneven distribution. The absolute deprivation cost function is constructed to quantify the sensitivity of the victims to the demand and arrival time of supplies， and to measure the negative psychological emotions caused by the lack of supplies. The relative deprivation cost function is constructed by referring to the Gini coefficient in economics to measure the difference in the negative psychological emotions suffered by the victims in different shelters， and to measure the negative psychological emotions such as imbalance and jealousy caused by the comparison of the victims. The total deprivation cost is also used to characterize the fairness of emergency supplies allocation.Based on the effective portrayal of the negative psychological emotions of the victims， an integrated optimization model for emergency evacuation， temporary shelter location and emergency material allocation is constructed with the objective of minimizing the total cost of rescue， and a stage-by-stage decoding genetic algorithm is designed to solve the model. In the verification stage， the effectiveness of the model and algorithm is verified by constructing a case study in combination with the disaster relief scenario after super typhoon hit Guangdong Province. The results of the analysis show that the timing of post-disaster rescue operations has a significant impact on the location of temporary shelters， emergency evacuation of victims， and emergency material distribution activities. Under the scenario where the rescue time is determined， improving the fairness of emergency supplies distribution can reduce the negative psychological emotions of the victims and improve the rescue efficiency. The relevant findings can provide useful references for post-disaster emergency management.

Key words: emergency evacuation, emergency material allocation, deprivation cost, integrated optimization, genetic algorithm