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Inventory Models with Fixed Costs, Forecast Updates, and Two Delivery Modes
Suresh P. Sethi, Houmin Yan and Hanqin Zhang
Vol. 51, No. 2 (Mar. - Apr., 2003), pp. 321-328
Published by: INFORMS
Stable URL: http://www.jstor.org/stable/4132409
Page Count: 8
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This paper is concerned with a periodic review inventory system with fast and slow delivery modes, fixed ordering cost, and regular demand forecast updates. At the beginning of each period, on-hand inventory and demand information are updated. At the same time, decisions on how much to order using fast and slow delivery modes are made. Fast and slow orders are delivered at the end of the current period and at the end of the next period, respectively. A forecast-update-dependent (s, S)-type policy is shown to be optimal. Also shown are some monotonicity properties of the policy parameters with respect to the costs and information updates.
Operations Research © 2003 INFORMS