Results 211 to 220 of about 3,294 (252)
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APPROXIMATION OF PH/PH/c RETRIAL QUEUE WITH PH-RETRIAL TIME
Asia-Pacific Journal of Operational Research, 2014We consider the PH/PH/c retrial queues with PH-retrial time. Approximation formulae for the distribution of the number of customers in service facility, sojourn time distribution and the mean number of customers in orbit are presented. We provide an approximation for GI/G/c retrial queue with general retrial time by approximating the general ...
YANG WOO SHIN, DUG HEE MOON
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NUMBER OF RETRIALS IN A FINITE SOURCE RETRIAL QUEUE WITH UNRELIABLE SERVER
Asia-Pacific Journal of Operational Research, 2014The object of this paper is to continue investigation of a single server retrial queue with finite number of sources in which the server is subjected to breakdowns and repairs. The server life time as well as the intervals between repetitions are exponentially distributed, while the repair and the service times are generally distributed.
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Probability in the Engineering and Informational Sciences, 2022
AbstractA retrial queue with classical retrial policy, where each blocked customer in the orbit retries for service, and general retrial times is modeled by a piecewise deterministic Markov process (PDMP). From the extended generator of the PDMP of the retrial queue, we derive the associated martingales. These results are used to derive the conditional
S. Meziani, T. Kernane
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AbstractA retrial queue with classical retrial policy, where each blocked customer in the orbit retries for service, and general retrial times is modeled by a piecewise deterministic Markov process (PDMP). From the extended generator of the PDMP of the retrial queue, we derive the associated martingales. These results are used to derive the conditional
S. Meziani, T. Kernane
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A Model of Rational Retrials in Queues
SSRN Electronic Journal, 2014Customers often wait in queues before being served. Because waiting is undesirable, customers may come back later (i.e., retry) when the queue is too long. However, retrial attempts can be costly as a result of transportation fees and service delays. This paper introduces a framework for rational retrial decisions in stationary queues.
Shiliang Cui +2 more
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Reducing Delay in Retrial Queues by Simultaneously Differentiating Service and Retrial Rates
Operations Research, 2020Customer retrials commonly occur in many service systems, such as healthcare, call centers, mobile networks, computer systems, and inventory systems. However, because of their complex nature, retrial queues are often more difficult to analyze than queues without retrials.
Jinting Wang +2 more
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Queueing Systems, 1990
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Approximation of M/M/c retrial queue with PH-retrial times
European Journal of Operational Research, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yang Woo Shin, Dug Hee Moon
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ESTIMATORS OF THE RETRIAL RATE IN M/G/1 RETRIAL QUEUES
Asia-Pacific Journal of Operational Research, 2006In this article we analyze the M/G/1 retrial queue from a statistical viewpoint. Assuming that retrials are exponentially distributed we focus on the estimation of the retrial parameter for constant and non-constant retrial policies, including the non-ergodic case. We consider different estimators and compare their asymptotic variances.
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A single-server retrial queue with general retrial times and Bernoulli schedule
Applied Mathematics and Computation, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Iván Atencia, Pilar Moreno
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A large deviation analysis of retrial models with constant and classic retrial rates
Performance Evaluation, 2019Abstract In this paper, a large deviation analysis of the retrial systems is developed. We consider both classical and constant retrial rate models. We focus on the (overflow) probability that the orbit size in the single-server system reaches a high level N within a regeneration period. Under natural assumptions, it is shown that, as N →
Evsey Morozov, Ksenia Zhukova
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