Cyclical schedules for capacitated lot sizing with dynamic demands
Article Abstract:
Cyclical scheduling, in which the time between production periods is constant, provides more simplicity and control than noncyclical scheduling, in which production periods are characterized by irregular spacing. Flexibility in production period spacing allows noncyclical scheduling to decrease total costs under conditions of dynamic demand. The application of cyclical scheduling objectives to the capacitated lot sizing problem reveals that the variation in the coefficient of demand affects differences in costs. Other key variables include the utilization of capacity, the setup time, the time between orders, and the number of items.
Publication Name: Management Science
Subject: Business, general
ISSN: 0025-1909
Year: 1991
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Open order due date maintenance in MRP systems
Article Abstract:
The fixed due date and dynamic due date methods of maintaining open door due dates are analyzed for companies utilizing Material Requirement Planning (MRP) methodologies. The fixed due date approach maintains the dates originally assigned to orders, and the dynamic due date approach updates figures to reflect the real needs dates. Both techniques are evaluated in MRP and varying environmental contexts. Results indicate that the performance differential between the two techniques is affected by operating conditions, and that the dynamic approach performs as well, if not better, than the fixed approach in differing environments.
Publication Name: Management Science
Subject: Business, general
ISSN: 0025-1909
Year: 1989
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