Some insights regarding the optimal reorder period in periodic review inventory systems
Some insights regarding the optimal reorder period in periodic review inventory systems
复制标题
关于定期审查库存系统中最佳再订购期的一些见解
DOI：
10.1016/j.ijpe.2007.03.014
复制
发表时间：
2008
影响因子：
12
通讯作者：
D. Robb
中科院分区：
文献类型：
--
作者：
E. Silver;D. Robb
定期审查清单制度不仅普遍存在，而且有大量的文献涉及各个方面，从其理论基础到其绩效。然而，对最佳审查期的选择及其在供求变化等基本清单参数方面的表现似乎了解甚少。在本文中，我们对待正常和伽玛分布，这可能是两个最常用的分布的需求在关键（保护）的时间间隔在定期审查系统。我们表明，总成本函数不一定表现良好的审查期间的函数，特别是，它可以是非凸的，这使得确定的最佳值的审查间隔。此外，我们演示和解释如何最好的审查期间的变化，各种参数的值被修改。其中一些变化最初在本质上是违反直觉的。管理导向的解释也应该有助于组织寻求改善库存系统的性能。
The periodic review inventory system is not only pervasive, but also has an extensive literature dealing with various aspects, from its theoretical underpinnings through to its performance. However, the selection of the best review period and its behaviour with respect to basic inventory parameters such as demand and supply variability appears to be poorly understood. In this paper we treat the normal and gamma distributions which are probably the two most commonly used distributions of demand over the key (protection) time interval in a periodic review system. We show that the total cost function is not necessarily well behaved as a function of the review period; in particular, it can be non-convex, which complicates the determination of the best value of the review interval. Also we demonstrate and explain how the best review period changes as the values of various parameters are modified. Some of these changes are initially counterintuitive in nature. Managerially oriented interpretations should also be helpful to organisations seeking improvement in inventory system performance.