Research On Risk Propagation And Prevention Of Building Material Supply Chain Finance Based On Complex Network

The building materials industry plays an important role in China’s economic development.At present,the small and medium-sized building materials enterprises are playing the role of the main force in the building materials industry.In contrast,the financing situation of small and medium-sized building materials enterprises is bad.The problem of"financing difficulties and financing expensive" is the main factor restricting their development and hindering the healthy development of the industry.Supply chain finance is an effective way to solve the problem.Supply chain finance is a new financing mode,which is a financial activity based on the actual supply chain transactions.It can fully integrate the resources in the supply chain,and provide reliable capital for the financing enterprises in the supply chain,effectively solve the financing difficulties of small and medium-sized enterprises.The application of supply chain finance in the building materials industry is also developing rapidly.When building materials supply chain finance provides financing convenience for small and medium-sized enterprises,there are some risks.Especially after the application of Internet technology,its risk propagation will bring serious consequences,so how to effectively prevent risk propagation is an urgent problem to be solved.This paper takes the platform-based professional building materials supply chain finance as the research object,uses the complex network theory as the research tool.After that study the robustness and default risk transmission and prevention of the building materials supply chain financial network through construction and simulation of the model.The main contents and innovations of this paper are as follows:(1)Through the research and analysis of the characteristics of building materials supply chain,the weighted network evolution model of building materials supply chain based on growth mechanism,local selection,connection preference and exit reconnection is proposed.In addition,analyze the statistical characteristics of building material supply chain network generated by the model,and show that the constructed model can better describe the topology of the building materials supply chain.And on this basis,according to the mapping rules,the building material supply chain financial weighted network is generated.(2)Robustness analysis of building material supply chain financial weighted network obtained by different mapping parameters is been made.In order to simulate the damage that may be suffered in reality,four attack strategies(internal random,external random,internal man-made and external man-made)are proposed.Through simulation analysis,it is found that with the different types of destruction,the robustness of building materials supply chain finance network presents are different,and the difference in network structure will affect its robustness,thus giving a way to improve the financial robustness of building materials supply chain financial network.(3)Introducing the idea of SI virus transmission model into building materials supply chain finance to construct a default risk propagation model for building materials supply chain finance.Then this paper analyzes the spread speed and characteristics of default risk caused by different risk sources and quantities in the network,and the impact of the anti-interference ability to the spread of default risk.Finally,from two perspectives of platform and enterprise,formulate countermeasures to prevent the occurrence and spread of default risk in building materials supply chain financial.(4)Analyzes the robustness and risk propagation of A company’s platform-based building materials supply chain finance network,and combine the robustness and risk transmission and prevention analysis conclusion from the simulation model to give countermeasures to improve the robustness and prevent default risk effectively.