Aiming at the five issues mentioned , the third chapter discuss four inventory control model under supply chain condition , they are vendor managed inventory ( vmi ) , jointly managed inventory ( jmi ) , multi - level inventory control and collaborative planning forecasting and replenishment ( cpfr ) 第三章针对第二章中提出的供应链环境下库存问题分析，按照供应链管理的集成度，分别阐述了供应商管理库存( vmi ) 、联合库存管理、多级库存优化以及合作规划、预测与补充( cpfr )的管理思想、作业流程及实施措施等，并对这些模型的优缺点进行了相应分析。
The performance and causation of uncertainty in supply chain management were summarized , and then the ideas and methods of inventory management were reviewed . some of the former research work on the cost of inventory in supply chain were summarized , in succession , the impact on inventory problem from coordination of partners in supply chain was discussed 总结了供应链管理中的不确定性的表现及原因，回顾了库存管理的思想和方法，综述了前人在供应链库存成本方面的研究成果，讨论了供应链协调对库存问题的影响。
After analyzing the traditional inventory management methods and the existing questions in the supply chain management , this thesis gives out a new inventory management method , i . e , vendor - management inventory ( vmi ) , and analyzes vmi ' s originating reasons , economic income , application procedures and etc . at the end , the author gives some suggestions to our national companies for the purpose of promoting the inventory management level and competitive ability 本文通过对传统的库存管理方法和供应链环境下库存问题的分析，引出一种新的适应供应链环境的库存管理方法? ?供应商管理用户库存( vmi ) ，并对vmi产生的动因、经济效益、实施步骤和应用等进行了比较全面的分析，提出了几点建议，希望能为国内企业提高库存管理水平，增强企业竞争力起到一点微薄的促进作用。
Uncertain factors in product recycling system of reverse supply chain have been analyzed . on the basis of existing researches of recycling technologies , product recycling strategies , product recycling model and product recycling classified methods of reverse supply chain have been discussed . based on the existing sale logistics network , logistics network model of reverse supply chain , considering 在逆向物流库存技术研究现状的基础上，探讨了逆向供应链环境下的库存问题，提出了逆向供应链库存控制策略和控制模型；在供应链安全库存模型的基础上，考虑逆向供应链中外部和内部逆向物流的影响，建立了闭环供应链的安全库存模型，讨论了模型的解并给出了数值算例。
Numerical experiments show that the shipment policy this model presents can yield a lower cost solution as compare to t he existing ones . meanwhile , we further generalize the above - mentioned models as follows : first , we discuss the problem for single - vendor multi - buyer integrated system . second , we consider the case that shortages are allowed to occur and are backordered completely for single - vendor single - buyer integrated system 同时，我们将上述模型作如下进一步推广：首先，讨论了单供货商多销售商联合库存问题；其次，考虑了单供货商单销售商联合库存系统中允许缺货情况；接着，我们考虑了时变需求下单供货商单销售商联合库存问题；最后，我们研究了带有原材料订购的单供货商单销售商联合库存问题。
