Material requirements planning (MRP) and purchase discounts
通过仿真实验比较了MRP系统中三种采购批量确定方法（最小单位成本、McLaren订单时刻法和传统方法）在存在数量折扣时的表现，并首次考虑了需求不确定性这一因素。
Abstract This paper reports the results of a simulation experiment that compares alternative procedures for determining purchase quantities in MRP systems when quantity discounts are available. The procedures are least unit cost (LUC), McLaren's order moment (MOM) and a “traditional” procedure that ignores the time‐phased information available from an MRP system. One of the factors in the experiment was requirement uncertainty, a factor heretofore not incorporated in MRP lot‐sizing research. The results of the experiment confirm MOM (and to a lesser extent LUC) as an effective lot‐sizing procedure. In addition, the work shows that the differences between the procedures tend to vanish as the amount of uncertainty in the requirements increases.