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Selecting T for a periodic review inventory model with staggered deliveries

โœ Scribed by James Flynn


Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
486 KB
Volume
47
Category
Article
ISSN
0894-069X

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โœฆ Synopsis


Consider a single-item, periodic review, infinite-horizon, undiscounted, inventory model with stochastic demands, proportional holding and shortage costs, and full backlogging. Orders can arrive in every period, and the cost of receiving them is negligible (as in a JIT setting). Every T periods, one audits the current stock level and decides on deliveries for the next T periods, thus incurring a fixed audit cost and-when one schedules deliveries-a fixed order cost. The problem is to find a review period T and an ordering policy that satisfy the average cost criterion. The current article extends an earlier treatment of this problem, which assumed that the fixed order cost is automatically incurred once every T periods. We characterize an optimal ordering policy when T is fixed, prove that an optimal review period T * * exists, and develop a global search algorithm for its computation. We also study the behavior of four approximations to T * * based on the assumption that the fixed order cost is incurred during every cycle. Analytic results from a companion article (where ยต/ฯƒ is large) and extensive computational experiments with normal and gamma demand test problems suggest these approximations and associated heuristic policies perform well when ยต/ฯƒ โ‰ฅ 2.


๐Ÿ“œ SIMILAR VOLUMES


Optimal control policies for a periodic
โœ Chi Chiang; Genaro J. Gutierrez ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 132 KB ๐Ÿ‘ 1 views

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