Setting base stock levels using product-form queueing networks

Setting base stock levels using product-form queueing networks

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Article ID: iaor1997527
Country: United States
Volume: 42
Issue: 2
Start Page Number: 259
End Page Number: 268
Publication Date: Feb 1996
Journal: Management Science
Authors: ,
Keywords: networks: flow, queues: theory
Abstract:

A manufacturing facility produces multiple products in a make-to-stock manner, and unsatisfied demand is backordered. A simple production control policy is analyzed: when the amount of work-in1process inventory plus finished goods inventory for a particular product falls below a base stock level, then release another unit of that product onto the shop floor. Assuming that the work-in-process inventory has a steady state distribution and that there are different costs incurred for carrying in-process, completed and backordered units, the authors show that the cost minimizing base stock level for each product is a critical fractile of the steady state distribution of the product’s total work-in-process inventory. By exploiting the relationship between the make-to-stock system and an open queueing network, they identify specific formulas for the base stock levels under standard product-form assumptions. For the lost sales case, a similar relation to a closed queueing network can be used to characterize the optimal control parameters.

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