Decision-making And Coordination Of Fresh Agricultural Products Supply Chain Based On Time Controllable

Fresh agricultural products are a kind of substances which are very vulnerable to corruption and deterioration.They play an important role in actual production and life and have distinct natural attributes.The whole life cycle of fresh agricultural products often needs to go through three links: output,transportation and sales,and the length of time spent in each link will directly affect the freshness of products.Generally speaking,the output of many fresh agricultural products has certain elasticity,and the output time can be controlled by investing more manpower and equipment.With the widespread application of science and technology in the logistics industry,the product transportation time can also be controlled in real time by means of changing transportation routes.At the same time,some changes have taken place quietly in the real business environment.The rapidly rising large retailers have gradually gained the dominant position in the supply chain by relying on their huge advantages of direct contact with customers.With the further refinement of social division of labor and the further integration of industry resources,specialized third-party logistics service providers began to emerge.Based on the characteristics of fresh agricultural products and the needs of realistic background,this paper takes the controllability of time as the starting point,considers the different dominant positions of suppliers and retailers,further studies the situation with TPL service providers participating,and explores the corresponding supply chain system decision-making and coordination issues.Firstly,this paper considers the freshness of fresh agricultural products and the retail price both affect the final market demand,and further considers the different dominant positions of suppliers and retailers in the real situation.In this model,fresh agricultural products suppliers make scientific decisions on the transportation time of products and retailers make timely decisions on the final retail price of products.The production and marketing supply chain system decision-making and its decentralized system coordination are studied.The results show that the equilibrium solution of the decentralized system and the optimal solution of the centralized decision-making system under two different dominant modes both exist and are unique solutions.The equilibrium transportation time under two kinds of decentralized decision-making is greater than the optimal transportation time under centralized decision-making,and there is profit loss in decentralized decision-making system.In both cases,the overall profit of the supply chain is smaller than that of the optimal supply chain under centralized decision-making.Horizontal comparison of two different dominant modes under decentralized decision-making shows that retailer-dominated mode requires less transportation time than supplier-dominated mode,and its retail price will be higher than supplier-dominated mode.And retailer-dominated supply chain will reduce supplier's profits,so as to increase their own profits.Finally,the same combination contract is introduced in two different dominant modes to achieve coordination in the decentralized supply chain system,and the parameters of Pareto improvement are given.Secondly,this paper further considers the controllability of the output time,which will be decided by the supplier in time.At the same time,TPL service providers are introduced into the supply chain to provide transportation services for products and to decide the transportation time of products.In this supply chain system,suppliers play a dominant role and have decision-making advantages.Both TPL and retailers have to make decisions based on supplier's decision-making.It is found that when the system parameters satisfy certain conditions,both the interior optimal solution under centralized decision-making and the interior equilibrium solution under decentralized decision-making have unique solutions.After comparing the optimal solution with the equilibrium solution,it is found that the production and transportation time under centralized decision-making is not necessarily less than that under decentralized decision-making.This is because enterprise decision-making needs to balance the cost caused by shorter time and the increase of demand.Trade-offs.After that,the transfer payment price clearing contract and logistics service price clearing contract are introduced under decentralized decision-making.It is found that the contract can achieve supply chain coordination,and the conditions for Pareto improvement are given.