海外供应价格可变的国内外双源采购决策

在供需均随机的情况下，研究一个全球制造企业同时向一个价格低但价格受海外市场影响而随机波动的海外供应商和一个价格高但价格稳定的国内供应商采购原材料的双源采购问题。提出制造商对海外供应商采取动态采购价格策略降低国际市场价格风险（动态采购价格与制造商与海外供应商谈判的初始采购价和海外市场价有线性关系），构建制造商为领导者，两个供应商为跟随者的Stackelberg博弈模型。求解在此动态采购价格策略下，制造商最优的订货量，供应商最优的生产量。最后通过算例计算各个最优值，并对动态采购价格中的风险分担因子和初始采购价格做了灵敏度分析。研究表明:（1）动态价格中的初始采购价格小于海外市场价格均值时，制造商的最优订货量随着风险分担因子的增加而减小，反之，则增加而增加。（2）制造商的最优订货量随着动态采购价格中的初始采购价格增加而减小，减小而增加。

Domestic and Oversea Dual-sourcing Procurement with Dynamic Purchasing Price for Oversea Supplier

With the uncertain demand and supply,We study a domestic and oversea dual-sourcing procurement with dynamic purchasing price for oversea supplier. We propose a Stackelberg Game model to obtain the optimal order quantities for the manufacturer and the optimal production quantities for two suppliers. We analyze the influence of the risk-sharing factor of the manufacturer with oversea supplier and the initial oversea purchasing price on the manufacture optimal order quantities and the supplier optimal production quantities. We certified dynamic price policy can reduce the risk of offshore market price for the manufacturer,and help the manufacturer to obtain more profit. And we find that(1)When the initial purchase price in the dynamic price is less than the average of the overseas market price,the optimal order quantities of the manufacturer decrease as the risk sharing factor increases.(2)The optimal order quantity of the manufacturer decreases as the initial purchase price in the dynamic purchase price increases. Our research can benefit manufacturers and suppliers who face uncertainty of international purchasing price.