关于多级供应链的回购契约研究

以生产商、代理商、批发市场销售商和零售商为研究对象，研究了回购契约下短生命周期产品供应链的协调问题。首先在集中式决策下研究了供应链的最优订货量需要满足的条件，其次在分散决策下研究了各级供应链的最优订货量需要满足的条件，最后指出系统协调时应该满足的条件。得出零售商的需求分布函数是批发市场销售商对它的批发价格的减函数的结论。

Study of the buy-back contract on the multi-level coordination of the supply chain

In this paper, manufacturers, distributors, wholesale distributors and a retailer are considered as the research object, and the coordination problem of shorter life cycle product supply chain in the buy- back contract was studied. First, the conditions under the centralized decision-making that the optimal order quantity of supply chain should be met were studied. Second, the researches of the conditions under the decentralized decision-making that the optimal order quantity of supply chain should be met was conducted. Then, it points out that condition should be met when the system is coordinated. Last, the result was got that the needs function of retailer is reducing function of the wholesale＇s price.