Research On The Organizational Collaborative Network Optimization In Response To Urban Major Natural Disaster Emergencies

With the development of industrialization and urbanization,cities play an increasingly important role in human production and life.In the context of risk society,the uncertainty and complexity of natural disasters bring more and more risk challenges to the production and life of urban society.Affected by the complexity of the environment,the limitations of resources and the organization itself,the traditional emergency management model with government organizations as a single main body is difficult to meet the needs of emergency response to major urban natural disasters.Since the Third Plenary Session of the 18 th Central Committee of the Communist Party of China,the party and the state have proposed a series of policies to promote the modernization of the country’s governance system and governance capacity.Under these circumstances,the collaborative governance of government organizations,social organizations and enterprise organizations has become an inevitable choice for modern cities to deal with major natural disasters.However,due to the suddenness and complexity of disaster response,there are serious constraints on the efficiency of emergency response organizations in the collaborative process.For such problems,this paper selects a representative and influential urban natural disaster event in China—the "7·20" heavy rain in Zhengzhou,and collects evidence of emergency organization cooperation in disaster events through a multi-source mixed method.The Ucinet6 made a comprehensive analysis of the collaborative network formed in this disaster event,and propose optimization suggestions based on the analysis results.Firstly,a static analysis is carried out from the perspective of the overall network,and the interaction relationship,the degree of coordination and the degree of resource control of the emergency organization are measured by indicators such as the number of networks,network nodes,network density,and network shortcut distance.Secondly,the dynamic analysis is carried out from the perspective of time dynamics,and the disaster response process is divided into five time slices according to the key nodes of emergency response,and then indicators such as density,average path and centrality are selected to describe the structural relationship,emergency function,and role status of the organizational coordination network.evolution.The research found that: First,government organizations,social organizations and enterprise organizations,as the main body of disaster response,have formed a collaborative network form,but the degree of network tightness needs to be improved,and the collaborative relationship between government organizations,social organizations and enterprise organizations needs to be further developed.promote.Second,the organizations occupying the core position in the emergency organization network are still mainly government organizations,social organizations with official background,and enterprise organizations,and emergency resources are mainly occupied by such organizations.Third,the collaborative relationship between emergency response organizations is dynamic and changes with the complexity of the disaster situation.Fourth,the emergency response function also has dynamic characteristics and changes with the change of emergency needs.In this regard,this study puts forward network optimization suggestions from three aspects: optimizing organizational structure,enhancing organizational network stickiness,and paying attention to emergency organizational network changes,in order to provide a reference for improving the efficiency of emergency organizational collaborative network in urban major natural disasters.