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Logistics and Risk Pooling for Reuse Products

再利用产品的物流和风险分担

基本信息

批准号：
14580492
负责人：
MORITO Susumu
金额：
$ 2.24万
依托单位：
Waseda University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

1)Strategic safety stock in remanufacturing : Based on the algorithms by Graves and Minner, a dynamic programming algorithm has been developed for serial as well as divergent production systems. The algorithm has been evaluated by extensive computational experiments.2)Lot size determination in remanufacturing : A Wagner-Whitin type lot size determination problemis considered for which a heuristic algorithm has been developed based on Lagrangean relaxation. The deterministic model takes into considerations such factors as the return of reuse products, disposal and remanufacturing of reuse products, together with production of new products. Dynamic programming algorithm is used to optimize the subproblem, and the algorithm has been evaluated via computational experiments. A parallel machine lot scheduling problem has also been studied, and an efficient column generation algorithm was developed and tested.3)Inventory transshipment problem : An inventory transshipment problem has been studied as a way to increase flexibility of logistics systems. An optimal deployment of preventive and emergency inventory transshipment has been formulated as a stochastic programming problem, and be solved. The effectiveness of combining two types of transshipments was analyzed.4)Relationship between product design and logistics : Considering manufacturing systems with recycle and reuse, the effects of module design and delayed differentiations on the performance of logistics systems has been studied. Optimal uses of common parts for new products from the old products, together with modualization has been analyzed by an optimization model.

1)再制造中的战略安全库存：在Graves和Minner算法的基础上，提出了一种适用于串联型和异构型生产系统的动态规划算法。通过大量的计算实验对该算法进行了评估。2)再制造中的批量确定：考虑了一个Wagner-Whitin类型的批量确定问题，并给出了基于拉格朗日松弛的启发式算法。确定性模型考虑了再利用产品的回收、再利用产品的处置和再制造以及新产品的生产等因素。采用动态规划算法对子问题进行优化，并通过计算实验对算法进行了评价。3)库存转运问题：为了提高物流系统的灵活性，对库存转运问题进行了研究。预防性和紧急库存转运的最优配置问题被描述为一个随机规划问题，并得到了求解。4)产品设计与物流的关系：考虑具有回收和再利用的制造系统，研究了模块设计和延迟区分对物流系统性能的影响。通过建立优化模型，分析了新旧产品的通用件的优化利用以及模块化问题。