Results 11 to 20 of about 3,514 (223)
Retrial queues with constant retrial times
Queueing Systems, 2022 The paper under review studies a single server queueing system without buffer. Customers arrive in the queue according to a Poisson process with rate \(\lambda\) and immediately receive the service, if the server is available. If the server is busy, the customer joins the orbit and retries after a deterministic time \(S\).
Fiems, Dieter
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Stability of retrial queues with versatile retrial policy [PDF]
International Journal of Stochastic Analysis, 2006 We consider in this paper the stability of retrial queues with a versatile retrial policy. We obtain sufficient conditions for the stability by the strong coupling convergence to a stationary ergodic regime for various models of retrial queues including a model with two types of customers, a model with breakdowns of the server, a model with negative ...
Kernane, Tewfik, Aïssani, Amar
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On the single-server retrial queue [PDF]
Yugoslav Journal of Operations Research, 2006 In this work, we review the stochastic decomposition for the number of customers in M/G/1 retrial queues with reliable server and server subjected to breakdowns which has been the subject of investigation in the literature.
Djellab Natalia V.
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A retrial queueing model with thresholds and phase type retrial times [PDF]
, 2020 Summary: There is an extensive literature on retrial queueing models. While a majority of the literature on retrial queueing models focuses on the retrial times to be exponentially distributed (so as to keep the state space to be of a reasonable size), a few papers deal with nonexponential retrial times but with some additional restrictions such as ...
Chakravarthy, Srinivas R.
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, 2018 Tato práce se zabývá problematikou obnovy řízení. Obnova řízení je jedním z mimořádných opravných prostředků. V práci se věnuji opravným prostředkům, historii obnovy, obnově řízení dle současné právní úpravy, obnově v judikatuře a v neposlední řadě také ...
Jaroševská, Pavlína
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Retrial queues and networks with constant retrial rate
, 2010 In the talk we review the results about retrial queues and networks with constant retrial rate. Speci fically we consider a network of queues with finite waiting room capacities. Jobs travel through the network by paths given by some routing matrix. If a job fi nds a queue with no available waiting space it goes into the orbit queue corresponding to ...
Avrachenkov, Konstantin
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MathematicsThis paper analyzes a discrete-time single-server retrial queue with preemptive service, Bernoulli arrivals, and adaptive retrial times, tailored to telecommunications systems. In call centers, the model captures caller retries and priority interruptions,
Iván Atencia-Mckillop +5 more
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Dynamic Physician Rostering in Emergency Departments: Managing Reentrant Patient Flows to Meet Excess Wait Time Targets. [PDF]
Health Care SciWe develop a patient flow model that integrates return loops and formulate a risk‐aware physician rostering framework designed to strictly enforce excess wait time targets, for example, tail probability of delay (TPoD) service levels. We employ a simulation‐based iterative staffing approach (ISA) to determine the optimal number of physicians required ...
Dai X, Gao P, Xie X.
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Stability of retrial queueing system with constant retrial rate [PDF]
, 2014 We study the stability of a single-server retrial queueing system with constant retrial rate and general input and service processes. In such system the external (primary) arrivals follow a renewal input with rate $\lambda$. The system also has service times with rate $\mu$.
Avrachenkov, Konstantin +3 more
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Study of feedback retrial queueing system with working vacation, setup time, and perfect repair
Ratio Mathematica, 2021 This manuscript analyses a retrial queueing system with working vacation, interruption, feedback, and setup time with the perfect repair. In the proposed model, the server takes vacation whenever the system gets empty but it still serves the customers at
Poonam Gupta
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