订购点

基于分类的库存决策模型适用于在缺少单位备件缺货成本参数条件下的订购点与订购批量决策。

Classification based inventory decision on reorder point and order quantity can be properly made even when the enterprise can not measure unit backorder cost , which is usual in spare-part inventory management .

该模型能根据不同的土地出让状况，确定出最佳土地储备订购点，来降低土地储备成本，节约土地储备资金。

The model can confirm the reorder point for land reserve according to deferent land remise situation , so as to reduce the cost of land reserve and save the land reserve funds . 3 .

然后通过计划的滚动，实现需求分布的更新和计划期上各时间段订购点与订购批量的更新。

By rolling the planning horizon to the next period , the demand distribution was updated , and optimal replenishment periods and order-up-to-levels for the new planning horizon could be determined .

应用最大值原理和最优脉冲控制理论，确定了最优订购时间点，使经营周期[0，T]内的利润最大化；

With the aid of maximum principle and optimal impulsive control theory , the maximal profit is obtained by establishing the optimal ordering point during operating duration [ 0 , T ] .