Approach for the spatio-temporal diffusion process and path model of disaster system

Ang Li, Min Li
2019 IOP Conference Series: Materials Science and Engineering  
The diffusion-oriented disaster system in spatial-temporal networks can be used to excavate the chain relationship between disaster nodes for using the similar space vectors. A methodological approach to analyze the vulnerability of interdependent infrastructures has been introduced. In this paper, the main purpose is to develop the diffusion process and path model of disaster system. Based on spatial-temporal factors, a model for identification of risk of a region is built. It describes the
more » ... ationship between distance and time in the diffusion process of disaster system. Furthermore, to demonstrate the path of disaster spreading using the improved algorithm of the ant colony. The results show that the diffusion of disaster system is a typical spatialtemporal unified diffusion process, the space distance can hinder the spread of the disaster, and the number of the affected nodes in the region is a negatively exponential relationship with the distance factor. The application of ant colony optimal algorithm to the research of disaster diffusion path has high accuracy and practicability.
doi:10.1088/1757-899x/677/4/042116 fatcat:oulakzgzljg3bayhfqgr2ix6mq