Retrial queues with server subject to breakdown and repairs
Queueing Systems: Theory and Applications - Special issue of queueing systems, theory and applications
Frontiers in queueing
On the single server retrial queue subject to breakdowns
Queueing Systems: Theory and Applications
Reliability Analysis of the Retrial Queue with Server Breakdowns and Repairs
Queueing Systems: Theory and Applications
Analysis of a retrial queue with two-phase service and server vacations
Queueing Systems: Theory and Applications
An M/G/1 queue with second optional service and server breakdowns
Computers & Mathematics with Applications
A two-stage batch arrival queueing system with a modified bernoulli schedule vacation under N-policy
Mathematical and Computer Modelling: An International Journal
Analysis of a two phase queueing system with general service times
Operations Research Letters
Operations Research Letters
Journal of Computational and Applied Mathematics
A new computational algorithm for retrial queues to cellular mobile systems with guard channels
Computers and Industrial Engineering
Help desk center operating model as a two-phase queueing system
Problems of Information Transmission
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A repairable queueing model with a two-phase service in succession, provided by a single server, is investigated. Customers arrive in a single ordinary queue and after the completion of the first phase service, either proceed to the second phase or join a retrial box from where they retry, after a random amount of time and independently of the other customers in orbit, to find a position for service in the second phase. Moreover, the server is subject to breakdowns and repairs in both phases, while a start-up time is needed in order to start serving a retrial customer. When the server, upon a service or a repair completion finds no customers waiting to be served, he departs for a single vacation of an arbitrarily distributed length. The arrival process is assumed to be Poisson and all service and repair times are arbitrarily distributed. For such a system the stability conditions and steady state analysis are investigated. Numerical results are finally obtained and used to investigate system performance.