The yield rate paradox in closed-loop supply chains

The yield rate paradox in closed-loop supply chains
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闭环供应链中的良品率悖论

DOI:
10.1016/j.ijpe.2021.108187
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发表时间:
2021
影响因子:
12
通讯作者:
Zhou Li
Zhou Li
中科院分区:
工程技术1区
文献类型:
--
作者:
Hosoda Takamichi;Disney Stephen M.;Zhou Li

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研究了由一个再制造商和一个制造商组成的闭环库存制造供应链的动态特性,该供应链具有一阶向量自回归需求和收益过程。再制造的产品,被认为是像新的一样好,部分满足市场需求;新制造的产品填补了剩余部分。制造商和再制造商合作,以最大限度地减少1)再制造和制造过程中的能力成本,2)成品库存和积压成本,3)处理未再制造的退货的成本和4)收集成本。再制造商在分类过程中检查返回的产品。只有一个预定的部分(分流率)的回报是再制造。我们调查的分流率的影响,系统范围内的成本。在一个成本敏感的设置,当再制造的单位成本低于制造的单位成本,这似乎是合理的推测,较高的分流率导致较低的系统范围内的成本。我们表明,系统范围内的成本总是凸的分流率,这表明系统范围内的成本实际上可以增加分流率,即使单位再制造成本低于制造成本。这种产量率悖论源于产量的增加在制造活动中产生了额外的可变性。通过研究边界条件,我们发现了最小的处置惩罚所需的诱惑再制造商处理所有的回报。
We investigate the dynamics of a closed-loop make-to-stock supply chain consisting of a remanufacturer and a manufacturer with a first-order vector auto-regressive demand and return process. Remanufactured products, considered as-good-as-new, partially satisfy market demand; newly manufactured products fill the remainder. The manufacturer and the remanufacturer cooperate to minimize the sum of the 1) capacity costs at the remanufacturing and manufacturing processes, 2) finished goods inventory holding and backlog cost, 3) cost to dispose of returned items not re-manufactured and 4) collection cost. The remanufacturer inspects returned products in a triage process. Only a predetermined fraction (the triage yield rate) of the returns are re-manufactured. We investigate the impact of the triage yield on the system-wide cost. In a cost-sensitive setting, when the unit cost of remanufacturing is lower than the unit cost of manufacturing, it seems reasonable to conjecture that higher triage yields lead to lower system-wide costs. We show the system-wide cost is always convex in the triage yield rate, suggesting system-wide costs could actually increase in the triage yield rate, even when the unit remanufacturing cost is lower than the manufacturing cost. Thisyield rate paradoxoriginates from the increased yields creating additional variability in the manufacturing activities. By investigating boundary conditions we find the minimal disposal penalty required to entice the remanufacturer to process all returns.
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