A Preventive Replacement Policy for Units Subject to Intermittent Demand

Article Abstract:

A preventive replacement policy for a unit that is active only part of the time is presented. It takes advantage of the time when the unit is not in demand. Since the time to failure depends on operation time, so does the replacement policy. Preventive and failure replacement occurs at the first no-demand instant at which its age exceeds a critical operational age. A table of critical operational ages and corresponding optimal reliability indices is included.

Reliability (Trustworthiness), Maintenance, Reliability, Optimization, Replacement Policy, Preventive Maintenance

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Dynamic Lot-Sizing When Demand Timing Is Uncertain

Article Abstract:

A solution to dynamic lot-sizing with backlogging when demand timing is uncertain is solved. The result is an extension of Zangwill's solution. A dynamic program for the solution is outlined. Solutions are presented in tables.

Inventory control, Dynamic programming, MRP, Scientific Research, Stochastic Model

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