基于延迟定价和回购契约的供应链协调策略研究

在需求不确定环境下，该研究分别构建基于单一批发价格契约和回购契约的供应链延迟定价策略决策模型.通过零售商和生产商利润函数的单峰性分析，证明在具有延迟定价策略的两种契约条件下，最优订货量的存在性和唯一性.通过两种情形的比较和数值分析表明：采用回购契约得到的最优订货量能使零售商和生产商均实现利润最大化，达到供应链协同.并且相比单一批发价格契约，能有效提高零售商的订货水平，从而提升供应链系统的总效益，尤其是当生产成本越小，或产品残值越大，或批发价格越高时，具有延迟定价的回购契约协调策略优势更为显著.

Strategy for supply chain coordination based on price-postponement and buy-back contract

Based on wholesale price contract and buy-back contract， respectively， price-postponement decision models are constructed for supply chain under uncertain demand. The existence and uniqueness of optimal order quantities under both contract conditions with price-postponement strategy are demonstrated by the unimodality of profit functions. Comparative and numerical analysis of two scenarios show that the optimal order quantity generated by buyback contract not only maximizes the profits of retailer and manufacturer to realize supply chain collaboration， but also effectively increases the order quantity of retailer so as to enhance the total benefit of the supply chain system compared with wholesale price contract. The advantage of the coordinated strategy of buyback contract with price-postponement is more significant， especially considering lower production cost， higher salvage value or higher wholesale price.