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Using Different Response-time Requirements to Smooth Time-varying Demand for Service by Ward Whitt is a Engineering article available to read on EtoBox.

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Many service systems have demand that varies signiÿcantly by time of day, making it costly to provide su cient capacity to be able to respond very quickly to each service request. Fortunately, however, di erent service requests often have very di erent response-time requirements. Some service requests may need immediate response, while others can tolerate substantial delays. Thus it is often possible to smooth demand by partitioning the service requests into separate priority classes according to their response-time requirements. Classes with more stringent performance requirements are given higher priority for service. Lower capacity may be required if lower-priority-class demand can be met during o -peak periods. We show how the priority classes can be deÿned and the resulting required ÿxed capacity can be determined, directly accounting for the time-dependent behavior. For this purpose, we exploit relatively simple analytical models, in particular, M t =G=∞ and deterministic o ered-load models. The analysis also provides an estimate of the capacity savings that can be obtained from partitioning time-varying demand into priority classes.

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Author

Ward Whitt

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0167-6377)

Published

1999

Language

EN

Field

Engineering (Physical Sciences)