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Joint inspection and inventory control for deteriorating items with time-dependent demand and deteriorating rate
Annals of Operations Research ( IF 4.8 ) Pub Date : 2021-02-23 , DOI: 10.1007/s10479-021-03943-2
Yue Xie , Allen H. Tai , Wai-Ki Ching , Yong-Hong Kuo , Na Song

In this paper, we consider inventory control problems for deteriorating items with maximum serviceable lifetime under mixed sales situation, both of the demand and the deterioration rate are depending on time. A model is presented to formulate the process of mixed sales that deteriorated items are sold to consumers together with serviceable items, where penalty cost for the sales of deteriorated products is included. From the literature search, this study is one of the first researches on the joint inspection and inventory control policies under the mixed sales situation with time-dependent demand and deterioration rate. An additional ordering contract is designed to improve the inventory holder’s profit. The optimal ordering time and ordering quantities are characterized for the additional ordering contract. We show that it would be more beneficial for the inventory holder to employ an additional order. Furthermore, two different inspection policies are considered in this study: (i) one inspection during the cycle; (ii) continuous monitoring in the cycle. The numerical results show that the net profit would increase if one inspection or continuous monitoring is conducted. These results provide useful insights to guide decision-making in inventory control problems of deteriorating products.



中文翻译:

联合检查和库存控制,对具有时变需求和恶化率的变质物品

在本文中,我们考虑了在混合销售情况下具有最大使用寿命的劣化物品的库存控制问题,需求和劣化率都取决于时间。提出了一个模型来制定混合销售的流程,将劣质商品与可服务商品一起出售给消费者,其中包括了劣质商品销售的罚款成本。从文献检索来看,本研究是在时变需求和恶化率混合的情况下,联合检查和库存控制策略的最早研究之一。额外的订购合同旨在提高库存持有人的利润。最佳订货时间和订货数量是附加订货合同的特征。我们表明,库存持有人使用额外的订单会更有利。此外,本研究考虑了两种不同的检查政策:(i)在周期中进行一次检查;(ii)在周期中进行连续监测。数值结果表明,如果进行一次检查或连续监控,则净利润将增加。这些结果提供了有用的见解,可指导决策制定不断恶化的产品的库存控制问题。

更新日期:2021-04-09
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