Results 111 to 120 of about 2,852 (222)

Control Strategies for Retrial Queues with a Single Retrial Attempt

Modeling, Control and Information Technologies
In this paper, we consider retrial queueing systems with an input flow rate that depends on the number of calls in an orbit and with a limited number of retrials. According to threshold and hysteresis strategies, optimization problems for the effective operation of the system are formulated and solved.
openaire   +1 more source

Stochastic decomposition for retrial queues

retrial queues, stochastic decomposition property, vacation models, factorial cumulants, rate of convergence,
J. Artalejo, J. Falin
core   +1 more source

Stability Analysis and Simulation of N-class Retrial System with Constant Retrial Rates and Poisson Inputs

, 2014
International audienceIn this paper, we study a new retrial queueing system with N classes of customers, where a class-i blocked customer joins orbit i.
K. AVRACHENKOV, Morozov, Evsey, Steyaert, BartUGent001982357876801000750391975534261238F4775F22-F0ED-11E1-A9DE-61C894A0A6B4, R. NEKRASOVA, Avrachenkov, Konstantin, B. STEYAERT, Steyaert, Bart, Nekrasova, Ruslana, E. MOROZOV   +8 more
core   +1 more source

Performance analysis of a queueing system with tandem nodes, retrial and server vacations

Results in Control and Optimization
In this proposed work, we consider a Markovian model of two-stage tandem queueing system with retrial policy and server vacation. The arriving customers are directed to the first station for service if server is idle upon arrival.
K. Anitha, V. Poongothai, P. Godhandaraman   +2 more
doaj   +1 more source

A POLLING MODEL WITH RETRIAL CUSTOMERS

Journal of the Operations Research Society of Japan, 1997
Summary: A polling model with \(n\) stations and switchover times is considered. The customers are of \(n\) different types, arrive to the system according to the Poisson distribution in batches of random size, and if they find the server unavailable, they start to make retrials until they succeed to find a position for service.
openaire   +3 more sources

Conditions for stability and instability of retrial queueing systems with general retrial times

We study the stability of single server retrial queues under general distribution for retrial times and stationary ergodic service times, for three main retrial policies studied in the literature: classical, constant and control policies.
Kernane, Tewfik
core  

Retrial queueing system with several input flows

The authors consider a single-server retrial queue with several Poisson input flows and arbitrary type-dependent service times. An arriving customer who finds the server busy will join the retrial group with a certain probability, or leave the system ...
Bocharov P.P., Atencia I., Phong N.H., Adan Ivo   +3 more
core  

Clinical Characteristics and Outcomes of Patients With Antithyroid Drug-Related Liver Injury. [PDF]

J Endocr Soc, 2023
Khan AA, Ata F, Aziz A, Elamin H, Shahzad A, Yousaf Z, Donato A.   +6 more
europepmc   +1 more source

Efficacious retrial of electroconvulsive therapy for major depressive disorder after a prolonged seizure in an older adult. [PDF]

BMJ Case Rep, 2023
Kramkowski J, Rath S.
europepmc   +1 more source

A retrial model in a nonstationary regime

Retrial Queueing Systems, Renewal Markovian Process, Semiregenerative Process,
M. Vázquez
core   +1 more source