Return policies for an inventory system with positive and negative demands

Daniel P. Heyman

Naval Research Logistics Quarterly, 1978, vol. 25, issue 4, 581-596

Abstract: We consider a single item inventory system with positive and negative stock fluctuations. Items can be purchased from a central stock, n items can be returned for a cost R + rn, and a linear inventory carrying cost is charged. It is shown that for minimizing the asymptotic cost rate when returns are a significant fraction of stock usage, a two‐critical‐number policy (a,b) is optimal, where b is the trigger level for returns and b – a is the return quantity. The values for a and b are found, as well as the operating characteristics of the system. We also consider the optimal return decision to make at time zero and show that it is partially determined by a and b.

Date: 1978
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