Listar por autor "Atencia-McKillop, Iván"
Mostrando ítems 1-20 de 26
-
A discrete-time queue with service time adjustments and general retrial times.
Atencia-McKillop, Iván
; Galán-García, José Luis; Padilla-Domínguez, Yolanda Carmen; Rodríguez-Cielos, Pedro (Elsevier, 2025-03-05)
This paper examines a discrete-time retrial queueing system where incoming customers can either choose a last-come, first-served (LCFS) discipline or enter an orbit. It accounts for the possibility of varying service times, ... -
A discrete-time queueing system with feedback and optional service
Atencia-McKillop, Iván; Merino-Córdoba, Salvador; Guzmán-Navarro, Francisco; Fortes-Ruiz, Inmaculada; Sánchez, Sixto (2016-07-29)
Queueing systems constitute a central tool in modeling and performance analysis. These types of systems are in our everyday life activities, and the theory of queueing systems was developed to provide models for forecasting ... -
A discrete-time queueing system with three different strategies
Atencia-McKillop, Iván; Padilla-Domínguez, Yolanda Carmen; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles[et al.] (Elsevier, 2021-09)
We consider a discrete-time Geo/G/1/inf system in which a customer that finishes its first essential service may opt to abandon the system, to receive a second optional service or to go at the head of the queue in order ... -
A discrete-time retrial queueing system with changes in the service times and retrial times.
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Galán-García, María Ángeles; Rodríguez-Cielos, Pedro; Padilla-Domínguez, Yolanda Carmen; Rodríguez-Padilla, Pablo[et al.] (2024)
This paper investigates a discrete-time retrial queueing system wherein arriving customers can choose between adopting a Last-Come-First-Served (LCFS) discipline or joining the orbit. The potential variability in service ... -
A Discrete-Time retrial queueing system with service upgrade
Fortes-Ruiz, Inmaculada; Sánchez, Sixto; Atencia-McKillop, Iván (2015-06-10)
We study the Markov chain underlying the considered queueing system obtaining the gen- erating function of the number of customers in the orbit and in the system as well as the stationary distribution of the time that a ... -
A discrete-time system with uncertainty information
Atencia-McKillop, Iván; Fortes-Ruiz, Inmaculada; Sánchez, Sixto (2017-02-14)
This paper considers a discrete-time queueing system with uncertainty information, that is, an arriving customer may opt, with a certain probability, to be served under a Last Come First Served (LCFS) discipline or, with ... -
A Geo[X]/G[X]/1 retrial queueing system with removal work and total renewal discipline
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles (Elsevier, 2018-02)
In this paper we consider a discrete-time retrial queueing system with batch arrivals of geometric type and general batch services. The arriving group of customers can decide to go directly to the server expelling out of ... -
A Non Markovian Retrial Queueing System
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles; Padilla-Domínguez, Yolanda Carmen; Rodríguez-Padilla, Pablo[et al.] (2022-06-13)
Researches on retrial queues with non-geometrical retrial times is motivated by real computers and telecommunication networks, where retrial times can hardly be geometrical distributed. The inherent difficulty with ... -
A non markovian retrial queueing system
Atencia-McKillop, Iván; Galán-García, María Ángeles; Aguilera-Venegas, Gabriel; Galán-García, José Luis (Elsevier, 2023)
This paper studies a discrete-time queueing system in which a customer who enters in the system with a server occupied may choose to go to the retrial group or to begin its service displacing to the retrial group the ... -
An arriving decision problem in a discrete-time queueing system
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles (Springer, 2019-08)
This paper discusses a discrete-time queueing system in which an arriving customer may adopt four different strategies; two of them correspond to a LCFS discipline where displacements or expulsions occur, and in the other ... -
A Discrete-time Queueing System With Imperfect Information for the Server
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Padilla-Domínguez, Yolanda Carmen; Galán-García, María Ángeles[et al.] (2020-07-24)
We consider a discrete-time Geo=G=1=1 system in which a customer that finishes its fi rst essential service may opt to abandon the system, to receive a second optional service or to place at the head of the queue in order ... -
Enhancing CAS improper integrals computations using extensions of the residue theorem
Galán-García, José Luis; Aguilera-Venegas, Gabriel; Galán-García, María Ángeles; Rodríguez-Cielos, Pedro; Rodríguez-Cielos, Ricardo; Atencia-McKillop, Iván; Padilla-Domínguez, Yolanda Carmen[et al.] (Springer, 2019)
In a previous paper, the authors developed new rules for computing improper integrals which allow computer algebra systems (CAS) to deal with a wider range of improper integrals. The theory used in order to develop such ... -
Improving CAS Capabilities: New Rules for Computing Improper Integrals
Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles; Padilla-Domínguez, Yolanda Carmen; Atencia-McKillop, Iván; Rodríguez, Ricardo[et al.] (2016-07-14)
There are diferent applications in Engineering that require to compute improper integrals of the first kind (integrals defined on an unbounded domain) such as: the work required to move an object from the surface of the ... -
A New Web-stepwise Solver for Ordinary Differential Equations
Galán-García, José Luis; Aguilera-Venegas, Gabriel; Le Goff, Morgan; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles; Padilla-Domínguez, Yolanda Carmen; Atencia-McKillop, Iván; Rodríguez-Cielos, Ricardo[et al.] (2020-07-24)
In this paper we introduce SODES (Step-wise Ordinary Differential Equations Solver) which is a new solver for Ordinary Dfferential Equations (ODE). SODES can be used not only as a solver but also as a tutorial for the ... -
Queueuing system with failures and priorities
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez, Pedro; Galán-García, María Ángeles (2016-07-07)
Queueing theory provides models, structural insights, problem solutions and algorithms to many application areas. Due to its practical applicability to production, manufacturing, home automation, communications ... -
A retrial discrete-time queueing system with actions in the server
Atencia-McKillop, Iván (2019-10-31)
This paper considers a discrete-time retrial queueing system with movements. The arriving customers can opt to go directly to the server obtaining immediately their service or to join the orbit. In the first case, if the ... -
Server information mechanism in a discrete-time queueing system
Atencia-McKillop, Iván; Galán-García, José Luis; Aguilera-Venegas, Gabriel; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles (2018-06-14)
This paper discusses a discrete-time queueing system in which an arriving customer may adopt four di erent strategies depending on the income information, two of them correspond to a LCFS discipline where displacements ... -
SMIS: A Stepwise Multiple Integration Solver Using a CAS.
Galán-García, José Luis; Rodríguez-Cielos, Pedro; Padilla-Domínguez, Yolanda Carmen; Galán-García, María Ángeles; Atencia-McKillop, Iván; Rodríguez-Padilla, Pablo; Aguilera-Venegas, Gabriel[et al.] (MDPI, 2021-11-11)
Multiple Integration is a very important topic in different applications in Engineering and other Sciences. Using numerical software to get an approximation to the solution is a normal procedure. Another approach is working ... -
SODES: Solving ordinary differential equations step by step
Galán-García, José Luis; Rodríguez-Cielos, Pedro; Galán-García, María Ángeles; Le Goff, Morgan; Padilla-Domínguez, Yolanda Carmen; Rodríguez-Padilla, Pablo; Atencia-McKillop, Iván; Aguilera-Venegas, Gabriel[et al.] (Elsevier, 2023)
In this paper, we introduce SODES (Stepwise Ordinary Differential Equations Solver) a new solver for Ordinary Differential Equations (ODE). SODES can optionally provide the solution displaying all the steps needed to obtain ... -
Sojourn Times and Steady-state Probabilities in a Retrial Queueing System
Atencia-McKillop, Iván (2020-07-24)
This paper analyses a discrete-time Geo/G/1 retrial queue with general retrial times in which the arriving customers may opt to follow a LCFS-PR discipline or to join the orbit where it is contemplated the movement of ...