关键词: 竞争模型, 交货时间不确定, 库存决策, 联合契约, 协调, 供应链

Abstract: Delivery time uncertainty appears in the actual operations of different kinds of supply chains widely.The suitable contracts can improve the performances of supply chains facing delivery time uncertainty effectively.Considering a two-echelon supply chain system with one supplier and one retailer under demand uncertainty and delivery time uncertainty,two different inventory decision modes that were Retailer-Managed Inventory (RMI) and Vendor-Managed Inventory (VMI) were discussed.The impacts of delivery time uncertainty on the performance of supply chain were examined.Under the RMI model,the revenue-sharing factor and unit subsidy were introduced to coordinate the supply chain respectively based on the wholesale price contract;under the VMI model,the supply chain was coordinated with the joint contract of wholesale price and revenue-sharing factor.Furthermore,the optimal decisions of the members under the pure revenue sharing contract were obtained,and the unit subsidy was introduced into the pure revenue sharing contract to coordinate the supply chain under the VMI model.The result showed that the proposed contracts could reduce the negative impacts from delivery time uncertainty under proper conditions.

Key words: competition model, delivery time uncertainty, inventory decision, joint contract, coordination, supply chains