Inventory Models For Deteriorating Items Under Partial Up-stream Advanced Payment And Partial Down-stream Delayed Payment

With the continuous development of modern society,how to ensure the security of supply chain finance is getting more and more important.Sufficient liquidity can not only keep the normal operation of the enterprise,but also enhance the competitiveness of the whole supply chain.On the one hand,the operation mode of the supply chain financial is increasingly flexible.Small and medium-sized enterprises facing financial constraints can raise funds to third-party financing institutions in various ways.On the other hand,the internal financing model in the supply chain is getting more and more widely used.This thesis based on the cash constraints of supply management,suppose retailers encounter cash constraints during lead time.The financing constraint of supply chain finance is used to solve the problem of capital constraint.In this paper,an inventory model with down-stream partial delayed payment and up-stream partial prepayment is presented.First of all,this paper considers a three-level supply chain with suppliers,retailers and consumers.We suppose that demand depends on delayed payment trade credit period and establish a single-cycle order model in which shortage is not allowed.Next,comparing the profit of the situation without delay payment,discussing when retailers can afford financial pressure to offer delayed payment to downstream customers.Then,through the analysis of the model and sensitivity analysis,the proposed model provides a series of conclusions that can provide the basis for the retailer's order decision.Finally,the paper takes into account the financial risk of third-party financing institutions in supply chain finance,and incorporates the bank's profit function into the model.The model considers the bank's risk-free interest rate in a perfectly competitive market and solves the problem of bank lending to retail The best rate for business.Finally,according to the optimal bank rate,we get the optimal ordering decision of the retailers.At this time,the optimal efficiency of the whole supply chain system is obtained and the normal operation of the enterprise in the supply chain is maintained.