Results 31 to 40 of about 10,042,261 (173)

Two-types of service facilities in interconnected stochastic queueing and queueing-inventory system with marked Markovian arrival process

open access: yesAin Shams Engineering Journal
This article explores the performance of interconnected queueing systems and queueing-inventory systems (IQSQIS) in stochastic modeling. IQSQIS features two types of service facilities with dual service stations: one providing non-commodity service with ...
K. Jeganathan   +5 more
doaj   +1 more source

An innovative modelling proposal for the blood supply chain

open access: yesVox Sanguinis, Volume 121, Issue 7, Page 904-913, July 2026.
Abstract Whole‐blood donation and apheresis are the only ways to obtain blood components for human use. Tools are being developed to improve the efficiency of blood donation systems by reducing waste, increasing donations and preventing shortages.
Jorge Pagán‐Ortiz   +4 more
wiley   +1 more source

Production Systems with Parallel Heterogeneous Servers of Limited Capacity: Accurate Modeling and Performance Analysis

open access: yesApplied Sciences
Heterogeneous systems of limited capacity have general applications in manufacturing, but also in logistic or service systems due to the differences in server or workstation performance or work assignment; this is in close relationship with system ...
Roque Calvo, Ana Arteaga
doaj   +1 more source

Ratings design and barriers to entry

open access: yesTheoretical Economics, Volume 21, Issue 3, Page 775-809, July 2026.
I study the impact of consumer reviews on the incentives for firms to participate in the market. I develop a model of endogenous entry in which firms produce goods of heterogeneous, unknown quality. Consumers engage in directed search, and prices are exogenously fixed.
Nikhil Vellodi
wiley   +1 more source

QSRED, an algorithm to solve the mismatch between the microscopic and macroscopic behavior of RED gateways [PDF]

open access: yes, 2010
Network congestion is a phenomenon caused by the extreme demand of restricted network resources. Various congestion control strategies have been proposed to increase network performance.
Murray, D.   +7 more
core  

On Performance Measures of a Fuzzy Priority Queue in a Transient Regime using the L-R Method

open access: yesInPrime
In this paper, we proposed the performance measures of a Markovian queue with non-preemptive priority under transient conditions in a fuzzy environment. We study the transient performance measures of an FM/FM/1 queue with absolute priority.
Daniel Lama Okenge   +3 more
doaj   +1 more source

Rational acquisition of laboratory equipment: an accurate mathematical model to estimate the trade‐offs in shared and nonshared equipment

open access: yesActa Crystallographica Section D, Volume 82, Issue 6, Page 638-645, June 2026.
We present a quantitative framework combining cost modelling and queueing theory to estimate hourly access costs, waiting times and congestion levels for shared high‐end scientific equipment. The approach is general, illustrated with cryo‐electron microscopy examples, and implemented in an open‐access online calculator to support evidence‐based ...
C. O. S. Sorzano, J. M. Carazo
wiley   +1 more source

Departure processes from MAP/PH/1 queues [PDF]

open access: yes, 1999
A MAP/PH/1 queue is a queue having a Markov arrival process (MAP), and a single server with phase-type (PH -type) distributed service time. This thesis considers the departure process from these type of queues.
Green, David Anthony
core  

Excursion theory for Markov processes indexed by Lévy trees

open access: yesProceedings of the London Mathematical Society, Volume 132, Issue 5, May 2026.
Abstract We develop an excursion theory that describes the evolution of a Markov process indexed by a Lévy tree away from a regular and instantaneous point x$x$ of the state space. The theory builds upon a notion of local time at x$x$ that was recently introduced in the companion paper [Probab. Theory Related Fields. 189 (2024), 1–99].
Armand Riera, Alejandro Rosales‐Ortiz
wiley   +1 more source

On input-to-state stability of stochastic retarded systems with Markovian switching [PDF]

open access: yes, 2009
This note develops a Razumikhin-type theorem on pth moment input-to-state stability of hybrid stochastic retarded systems (also known as stochastic retarded systems with Markovian switching), which is an improvement of an existing result.
Huang, Lirong, Mao, Xuerong
core   +4 more sources

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