Abstract
Emergency logistics plays an important role in the rescue process after sudden disasters. However, in the process of emergency logistics activities, risks may arise due to scheduling problems or insufficient supply of warehouse stocks, resulting in an insufficient rescue capacity. In addition, the risk of emergency logistics is random and may exist in a certain link or throughout the whole rescue process of emergency logistics. Consequently, the disaster site may be invaded by sudden disaster risk due to the lack of necessary material supplies. The entire emergency logistics system may be destroyed and cause even greater losses as well. Based on this phenomenon, this paper introduces reliability factors of materials and combines the complex network theory to build an emergency logistics network and analyze the emergency logistics risk propagation mechanism. This paper firstly builds an emergency logistics network based on complex network theory. Then, it combines the improved epidemic model to analyze the influencing factors of risk propagation in the emergency logistics network. Finally, this paper probes into the emergency logistics risk propagation mechanisms and processes in terms of network type, material reliability, rescue speed, etc. Furthermore, this paper identifies key factors for risk control and proposes countermeasures to further spread risks, thereby reducing the risk to loss of economic life.
Highlights
In recent years, various sudden disasters have occurred all over the world, such as earthquakes, debris flow, fire hazards and plagues, causing huge losses to local economies and life [1]
Since emergency logistics risk propagation is discussed in this paper, the risk infection capacity was set as ω; if the risk intensity was greater than the node anti-risk ability, the demand node was affected
In the actual situation, when demand nodes suffer from sudden risk, material reliability should be taken into consideration in order to formulate more network, and the BA network was more volatile than the emergency logistics network, which had strong stability for risk propagation
Summary
Various sudden disasters have occurred all over the world, such as earthquakes, debris flow, fire hazards and plagues, causing huge losses to local economies and life [1]. Theaffects risk spread throughout theother emergency logistics or area each affects the evolution of is most important roleAccordingly, as a collection of people, goods, and to reduce role sudden disasters, thethe other links and nodes. From the perspective above it is necessary to study the internal role oflogistics the reliability of emergency materials of in practical significance, it is feasible scientific to of build the emergency logistics network emergency logistics systems. Res. Public Health 2019, 16, 4677 further proposes the improved epidemic model for risk transmission, and Section 4 uses a computer simulation method to analyze the risk propagation mechanism, as well as influencing factors of emergency logistics, and provides some strategies to deal with the risk of sudden disaster in real life.
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