竞争环境下基于退换货的网购供应链动态均衡研究

研究竞争环境下基于退换货的网购供应链动态均衡模型.此供应链包含多个生产商、电商、快递商及需求市场.将快递商的运输速度作为竞争的一个重要因素进行研究.通过正弦函数说明,网购供应链的市场需求也呈季节性变化.利用纳什均衡及变分不等式得到各层决策者的竞争均衡解.通过分析换货比重得出电商应减少消费者的退货率,以提高整条供应链的利润和竞争能力.并利用数值算例说明模型的正确性与合理性.

A Dynamic Online Shopping Supply Chain Equilibrium Model Based on Customer Return and Replacement in Competitive Condition

Based on the traditional supply chain,a closed-loop online shopping supply chain which considers the return and replacement of goods is investigated.A game theory model for online supply chain network competition in dynamic environment is developed in which includes multiple competing manufacturers,online retailers,freight service providers and demand markets.Using a simple cyclic function state that the demand of online supply chain is also seasonal.Because of the importance of freight service providers and the particularity of online shopping consumers,the express speed is necessary factor in the competition.By using Nash equilibrium and variational inequality,the competitive equilibrium solutions of each tier are given.It is also concluded that the efficiency of freight providers play an important role in the online supply chain competition.Through analyzing the proportion of replacement,online retailers should reduce the return of consumers,in order to increase the profit and competitive ability of the whole supply chain.Finally,a numerical example is used to illustrate the correctness and rationality of the model.