耐烦期有限的库存系统的最优存贮模型

通过假定定常需求、常数变质率以及短缺量完全拖后,而得到了耐烦期有限的库存系统的最优存贮模型·用BASIC语言编程,进行计算机仿真,计算选择该类库存系统的最优决策方案,目的在于找到最优定货周期以使单位时间平均总费用最小·最后给出了数字例子·模拟结果表明,变质率、拖后短缺费以及单位物品销售机会的损失成本的增大均使定货周期缩短、平均总费用增大,而单位时间需求量及单位物品单位时间库存保管费的增大也会产生同样的结果

Optimal Inventory Model for Single Deteriorating Item under the Effect of Time-Limited Free Back-orders

The optimal inventory model for single deteriorating item under the effect of time limited free back orders was obtained by assuming constant demand,constant rate of deteriorating and shortages backlog. Computerized simulation techniques in BASIC were adopted to find the optimal length of an inventory cycle such that the total average cost per unit time is minimized. A numerical example was given. The simulation indicates that when deteriration rate,back ordering cost or per unit cost of lost sales increase respectively,the length of an inventory cycle become shorter and the average cost per unit time rises. So do the change of demand per unit time and the average cost of carrying inventory per unit time.