Modeling of emergency logistics system based on complex network theory

The emergency logistics system is the necessary support to ensure the basic needs of the people in the event of natural disasters, major epidemics and local wars. It involves a variety of subjects and needs the wide participation of all sectors of society. In order to study the relationship between its internal elements, this paper uses the complex network theory to carry out research. Based on the analysis of the basic network model and the characteristics of emergency logistics system, three independent complex network models of material demanders, material manufacturers and raw material suppliers are established, as well as a three-layer dependent network model after the coupling relationship between the three is established. The relevant research in this paper will provide a theoretical reference for the study of the characteristics of the emergency logistics system, and lay a model foundation for the scientific study of the relationship between the elements in the system.