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Modeling server-unreliability in closed queuing-networks

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2 Author(s)
Ramanjaneyulu, C.S. ; Aeronaut. Dev. Agency, Bangalore, India ; Sarma, V.V.S.

A method is presented to model server unreliability in closed queuing networks. Breakdowns and repairs of servers, assumed to be time-dependent, are modeled using virtual customers and virtual servers in the system. The problem is thus converted into a closed queue with all reliable servers and preemptive resume priority centers. Several recent preemptive priority approximations and an approximation of the one proposed are used in the analysis. This method has approximately the same computational requirements as that of mean-value analysis for a network of identical dimensions and is therefore very efficient

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Reliability, IEEE Transactions on  (Volume:38 ,  Issue: 1 )