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Wyświetlanie 1-4 z 4
Tytuł:
Discussion on the transient behavior of single server Markovian multiple variant vacation queues
Autorzy:
Vadivukarasi, Manickam
Kalidass, Kaliappan
Powiązania:
https://bibliotekanauki.pl/articles/2099427.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Markovian queue
multiple variant vacations
transient solution
waiting-time distribution
Opis:
We consider an M/M/1 queue where beneficiary visits occur singly. Once the beneficiary level in the system becomes zero, the server takes a vacation at once. If the server finds no beneficiaries in the system, then the server can take another vacation after the return from the vacation. This process continues until the server has exhaustively taken all the J vacations. The closed form transient solution of the considered model and some important time-dependent performance measures are obtained. Further, the steady state system size distribution is obtained from the time-dependent solution. A stochastic decomposition structure of waiting time distribution and expression for the additional waiting time due to the presence of server vacations are studied. Numerical assessments are presented.
Źródło:
Operations Research and Decisions; 2021, 31, 1; 123--146
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diffusion limits for the queue length of jobs in multi-server open queueing networks
Autorzy:
Greičius, E.
Minkevičius, S.
Powiązania:
https://bibliotekanauki.pl/articles/406328.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
performance evaluation
multiserver open queueing network
limit theorem
queue length
Opis:
A mathematical model of a multiserver open queueing network in heavy traffic is developed. This model is that of a multiserver computer system network in heavy traffic. A limit theorem for the length of the queue has been presented.
Źródło:
Operations Research and Decisions; 2017, 27, 4; 71-84
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrating queue theory and multi-criteria decision-making tools for selecting roll-over car washing machine
Autorzy:
Ozcalici, Mehmet
Powiązania:
https://bibliotekanauki.pl/articles/27315338.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
queue theory
multi-criteria decision-making
TOPSIS
EDAS
CoCoSo
TODIM
Opis:
The study aims to develop a decision-making framework by integrating queuing theory and multi-criteria decision-making (MCDM) tools, namely TOPSIS, EDAS, CoCoSo, and TODIM to select a roll-over car washing machine for an oil station. The queue, technical and financial characteristics of the alternatives are added to the decision-making process. The decision matrix includes five criteria and five alternatives. One million weight sets are created randomly, and MCDM techniques are applied to interpret the results statistically. Results indicate that Alternative 3 is statistically superior to the others. The proposed procedure can help decision makers to make decisions when expert knowledge isn’t available, and it can be applied for other purposes by making small changes.
Źródło:
Operations Research and Decisions; 2023, 33, 2; 99--119
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative analysis of (s, Q) and (s, S) ordering policies in a queuing-inventory system with stock-dependent arrival and queue-dependent service process
Autorzy:
Sugapriya, Chandrasekaran
Nithya, Murugesan
Jeganathan, Kathirvel
Selvakumar, Subramanian
Harikrishnan, Thanushkodi
Powiązania:
https://bibliotekanauki.pl/articles/27315339.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
stock-dependent arrival
queue-dependent service
infinite waiting hall
ordering principles
Opis:
This article deals with a Markovian queuing-inventory system (MQIS) under the stochastic modeling technique. The arrival stream of this system is dependent on the present stock level at an instant. Meanwhile, the system focuses on reducing the waiting time of a unit by assuming a queue-dependent service policy (QDSP). The system consists of an infinite waiting hall to receive an arriving unit. The MQIS assumes that no unit of arrival is allowed when the stock level of the system is empty. The discussion of this MQIS runs over the two types of ordering principles named 1) (s, Q) 2) (s, S). According to both ordering principles, the assumed arrival and service patterns have been considered separately and classified as Model-I (M-I) and Model-II (M-II) respectively. The steady state of the system for both M-I and M-II is analysed and resolved under the Neuts matrix-geometric technique. The system performance measures of the system are also computed. The expected cost function of both M-I and M-II are constructed as well. Further, the necessary numerical illustrations are provided and distinguished for M-I and M-II to explore the proposed model. This paper finds the optimum ordering policy to execute the stock-dependent arrival and queue-dependent service strategies.
Źródło:
Operations Research and Decisions; 2023, 33, 2; 121--153
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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