Results 21 to 30 of about 672 (207)

Analysis and optimization of vacation and polling models with retrials [PDF]

open access: yes, 2015
We study a vacation-type queueing model, and a single-server multi-queue polling model, with the special feature of retrials. Just before the server arrives at a station there is some deterministic glue period.
Resing, J.A.C.   +5 more
core   +4 more sources

Understanding customer retrials in call centers: preferences for service quality and service speed

open access: yes, 2021
Problem definition: Customers are likely to initiate retrial calls when their previous contact with a call center fails to deliver a satisfactory resolution.
Hu, Kejia, Allon, Gad, Bassamboo, Achal
core   +1 more source

Low-latency random access in wireless networks

open access: yesICT Express, 2021
For fast access to the cell, we propose an enhanced random access scheme exploiting multiple transmissions of random access preambles and random access responses.
Eunkyung Kim, Heesoo Lee
doaj   +1 more source

Waiting Time Distribution and Some Characteristics in Finite Queueing Systems with Retrials [PDF]

open access: yesThe Egyptian Statistical Journal, 2001
A retrial queueing system consists of a primary service facility of finite capacity and an orbit. Customers arrive from outside the system according to Poisson process, or from the orbit according to a rate that depends upon the number of customers in ...
Essam Amin, Elham Shoukry, Nadia Talat
doaj   +1 more source

Resource Orchestration Strategies With Retrials for Latency-Sensitive Network Slicing Over Distributed Telco Clouds

open access: yesIEEE Access, 2021
The new radio technologies (i.e. 5G and beyond) will allow a new generation of innovative services operated by vertical industries (e.g. robotic cloud, autonomous vehicles, etc.) with more stringent QoS requirements, especially in terms of end-to-end ...
M. Gharbaoui   +3 more
doaj   +1 more source

Modified Erlang Loss System for Cognitive Wireless Networks

open access: yesMathematics, 2022
This paper considers a modified Erlang loss system for cognitive wireless networks and related applications. A primary user has pre-emptive priority over secondary users, and the primary customer is lost if upon arrival all the channels are used by other
Evsey Morozov   +3 more
doaj   +1 more source

Retrial BMAP/PH/N Queueing System with a Threshold-Dependent Inter-Retrial Time Distribution

open access: yesMathematics, 2022
In this paper, we study a multi-server queueing system with retrials and an infinite orbit. The arrival of primary customers is described by a batch Markovian arrival process (BMAP), and the service times have a phase-type (PH) distribution.
Valentina I. Klimenok   +3 more
doaj   +1 more source

Controlled Arrivals on the Retrial Queueing–Inventory System with an Essential Interruption and Emergency Vacationing Server

open access: yesMathematics, 2023
In recent times, we have encountered new situations that have imposed restrictions on our ability to visit public places. These changes have affected various aspects of our lives, including limited access to supermarkets, vegetable shops, and other ...
N. Nithya   +6 more
doaj   +1 more source

CALL CENTER AS RETRIAL QUEUEING SYSTEM

open access: yesМіжнародний науково-технічний журнал "Проблеми керування та інформатики", 2007
The process of call center operation is considered. Analytical and statistical models of call center operation are developed as M / M / c / 0 retrial queuing systems with losses. The flow of retrials influences the characteristics of the quality of call
E.V. Koba, S.V. Pustovaya
doaj   +1 more source

The Reflection and Reconstruction of the Remand for Retrial in the Criminal Retrial Procedure [PDF]

open access: yesInternational Journal of Law and Society, 2021
For quite a long period of time, the research on criminal trial procedures has mainly focused on the theory and practical issues of remand for retrial in the second-instance procedure, and the retrial procedure as a criminal special relief procedure is not paid enough attention.
openaire   +1 more source

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