需求分布不定的供应链网络均衡  

Study on Equilibrium of Supply Chain Network with Uncertain Demand Distribution

作　　者：李增强[1] 胡劲松[1] 胡小根[1] 张桂涛[1] 

机构地区：[1]青岛大学管理科学与工程系,山东青岛266071

出　　处：《物流技术》2012年第10期133-135,共3页Logistics Technology

基　　金：国家自然科学基金资助项目(71071082)

摘　　要：研究了由多个相互竞争制造商以及多个相互竞争零售商组成且零售商面临分布不定的需求的供应链网络均衡。借助变分不等式理论,刻画了制造商、零售商以及消费者的最优行为,建立了供应链网络均衡模型并设计网络均衡的求解算法。数值分析了分布不定和限制性价格上限对网络均衡的影响。结果表明:与随机需求相比较,需求分布不定情形下的零售商利润将减少,制造商利润将增多且生产量更大;当存在限制性价格上限时,消费市场可能出现商品短缺,且制造商和零售商的总利润减少。In this paper we studied the equilibrium of a supply chain network composed of multiple mutually competing manufacturers and re tailers and the latter were faced with uncertain demand distribution.Using variational inequality theory, we depicted the optimal behaviour of the manufacturers, retailers and consumers, established the supply chain network equilibrium model and designed its solution algorithm. Then we used a numerical example to study the influence oftbe distributional uncertainty and price ceiling on the network equilibrium and found that as compared with stochastic demand, when the demand distribution was uncertain, the profit of the retailers would be diminished while that of the manufacturers would be increased and they also would produce more; when where was a price ceiling, the consumer market would experience commodity shortage and the total profit of the manufacturers and retailers would decrease.

关 键 词：供应链网络 变分不等式 NASH均衡 分布不定随机需求 

分 类 号：F274[经济管理—企业管理]