In order to visualize the changes in the city's comprehensive risk,it is conducive to decision-makers to make rapid and accurate response measures,the method of system dynamic modeling was used to dynamically analyze the level of urban public safety risk from two aspects of comprehensive risk and comprehensive resilience.The factors that affect urban public safety risk were classified as five subsystems,and the weights were determined,and a system dynamic model of urban public safety risk was constructed by using VENSIM software.Taking a certain city as an example,the index data of 2010—2021 was collected to conduct the system simulation,and the change in the comprehensive risk and resilience of this city was dynami-cally analyzed.The results show that the comprehensive risk level of this city has decreased year by year,and the level of comprehensive resilience has increased year by year.The phenomena of high risk and low resilience have appeared in 2014 and 2020 due to the influence of system key factors.The research results have certain reference value for evaluating the urban public safety risk from a dynamic perspective.
urban public safetyrisk assessmentgrey relational analysissystem dynamics
维普
万方数据
