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The prevention from risk of virus type is one of the main contents of the risk management in supply chain. This paper has studied the immune effect of three immunization strategies on risk of virus type in different supply chains. When the supply chain is a homogeneous network, the adopting of the random immunization strategy to prevent risk of virus type is more effective; while when the supply chain...
Some nodes which have innate immunity have not been considered by the dynamic equation of traditional SIS type. This paper improved the dynamic equation of risk spreading in the SIS type, and studied epidemic critical threshold of crisis when the risks of corrected SIS type spread in the uniformity network and non-uniform network. Based on the analytical results, a conclusion could be drawn that if...
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