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As soon as the stocks fall below a pre-determined level (usually called, reorder point, or reorder level), replenishment order is placed. Periodic Review The inventory levels are reviewed at a set frequency. If the st...

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BASICS OF INVENTORY MANAGEMENT: PART IV - 1

Usually the difference between s and S depends on holding costs and fixed ordering cost. The reorder level s depends on service level constraints or penalty costs. As with the (b,Q)-model we assume compound renewal de...

www.kellogg.northwestern.edu

The Effect of Lead Time Uncertainty On Safety Stocks.

We show the existence of a service level threshold greater than 50 percent below which re-order points increase with a decrease in lead time variability. Thus, for a firm operating just below this threshold, reducing ...