ABSTRACT

The proposed work considers two different scenarios of a finite period complete-lockdown situation for two warehouse perishable inventory systems. The first scenario assumed the enforcement and ease of lockdown when the owned warehouse is being vacated. The latter studied the scenario using lockdown enforcement during the inventory dispatch from the owned warehouse and relieved as the items are taken from the rented warehouse. These deterministic models consider a time-dependent linear demand rate and two parameters Weibull distributed deterioration rate. The linearly increasing demand function decreases by a finite volume as the lockdown is imposed and increases suddenly whenever the lockdown is relaxed. Both of the models have been formulated to minimise the total system cost. Further, the behaviour of the models has been examined using sensitivity analysis. Considering the realistic scenarios makes the models practicable to implement in a crisis like the COVID-19 pandemic.

摘要

拟议的工作考虑了两个仓库易腐库存系统的有限期完全锁定情况的两种不同情况。第一种方案假定在撤离拥有的仓库时执行并易于锁定。后者研究了在从拥有的仓库中进行库存分配期间使用锁定实施的方案，并从从租赁仓库中取出物品来减轻了这种情况。这些确定性模型考虑了时间相关的线性需求率和两个参数威布尔分布恶化率。线性增加的需求函数随着施加锁定而减少有限的体积，并且每当放松锁定时突然增加。两种模型均已制定，可将总系统成本降至最低。进一步，模型的行为已使用敏感性分析进行了检查。考虑到实际情况，这些模型可在诸如COVID-19大流行等危机中切实可行地实施。