Research On Supply Contracts With Uncertain Yield

Due to Lean Thinking used Widely, supplied uncertainty caused more and more problems, especially in the leading retailer on the supply chain, unstable supply situation is more obvious. When supply chain is certain, supply chain risk borne by different parties. Each participant in making decisions based on their own best interest, thus making it very easy to damage the interests of the whole supply chain system. WS is the case enterprise. WS enterprises to master sales channels, with respect to farmers in a strong position. Farmers affected by various factors, the supply volume has been in an unstable state, and the supply amount is less than the demand for farmed phenomenon becoming increasingly apparent. The contractual relationship between enterprises and farmers can not effectively solve the problem. For the current problems, this paper from the perspective of supply chain contracts into account in by a supplier and a retailer of a two-stage supply chain, the establishment of a decentralized supply chain uncertainty in the supply of both Decision Model by a simple mathematical model to analyze the supply chain to reduce the effect of "double marginal effect." Based on common supply chain contract, proposed to deal with uncertain supply Three supply chain contract model: buy back contracts, profit sharing contracts and contract costs to bear, and then establishe three kinds of supply chain analysis and decision model. Explore the impact of different parameters of the contract on the supply chain performance, and provide reference for WS enterprises to effectively use. Considering the actual data WS business operations, with reference to the foregoing theoretical analysis, different contract parameters can be set and adjusted analysis of to solve the current problems. Further taking into account the different effects of different contracts, such as: impact of the contract on the supply chain and some investment yield larger role, and some of the profits to enhance the retailer has a significant effect, and some can be effective in reducing the supply chain operational risks. Therefore, combined with the needs of different development periods and the development of WS-scale enterprises, to explore what kind of contract companies should be selected at different times, to provide effective reference for the healthy development of enterprises WS.