G. Chandra Sekar

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Consider a single server retrial queueing system with loss and feedback under Pre-emptive priority service in which two types of customers arrive in a Poisson process with arrival rate λ 1 for low priority customers and λ 2 for high priority customers. These customers are identified as primary calls. The service times follow an exponential distribution with(More)
Consider a single server retrial queueing system with pre-emptive priority service and single working vacation in which two types of customers arrive in a Poisson process with arrival rates λ1 for low and λ2 for high priority customers. We assume that regular service times follow an exponential distribution with parameters μ1 and μ2 correspondingly. The(More)
Consider a single server retrial queueing system in which customers arrive in a Poisson process with arrival rate λ that which follows a Poisson process. Let k be the number of phases in the service station. The service time has Erlang k-type distribution with service rate kμ for each phase. Two types of vacation policies are discussed in this research(More)
Consider a single server retrial queueing system in which customers arrive in a Poisson process with arrival rate λ and negative customers arrive at a rate ν which also follows a Poisson process. Let K be the number of phases in the service station. The service time has Erlang-K distribution with service rate Kμ for each phase. We assume that the services(More)
Consider a single server retrial queueing system with pre-emptive priority service and vacation interruptions in which customers arrive in a Poisson process with arrival rate λ 1 for low priority customers and λ 2 for high priority customers. Further it is assume that the service times follow an exponential distribution with parameters μ 1 and μ 2 for low(More)
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