Cost optimization of a queueing inventory system with two level supply mode, retrial demands and multiple vacations using genetic algorithm

M Jain, I Kumar - International Journal of Applied and Computational …, 2023 - Springer
The paper investigates the queueing inventory miniature with single server uses multiple
vacations, two-level supply mode with different lead time. Two level supply modes mean …

A stochastic queueing-inventory system with renewal demands and positive lead time

M Keerthana, N Saranya… - European Journal of …, 2020 - inderscienceonline.com
This article analyses a stochastic inventory system with a service facility. This is an extended
work of Yadavalli et al.(2008) by including the positive lead time. The customer arrives …

A production queueing-inventory system with two-customer and a server subject to breakdown

UU Kocer, S Ozkar - Annals of Operations Research, 2023 - Springer
A queueing-inventory system where the server is subject to breakdown is examined. The
products in inventory are provided by production. Two different types of customers are …

Two-commodity queueing-inventory system with phase-type distribution of service times

S Ozkar - Annals of Operations Research, 2023 - Springer
A two-commodity queueing-inventory system with phase-type service times and exponential
lead times is considered. There are two types of customers; Type 1 and Type 2. Demands …

Queueing-inventory system for two commodities with optional demands of customers and MAP arrivals

N Anbazhagan, GP Joshi, R Suganya, S Amutha… - Mathematics, 2022 - mdpi.com
This research analyses the performance of a perishable queueing-inventory system for two
commodities with optional customers demands. We assume in the article that all customers …

When is it worth it for two hospital network pharmacies to operate as an integrated inventory system in the presence of supply chain disruptions?

LL Czerniak, MS Lavieri, MS Daskin… - IISE Transactions on …, 2024 - Taylor & Francis
Hospital pharmacies stock perishable drugs that experience supply chain disruptions. A
potential solution to alleviate the negative effects of shortages caused by these disruptions is …

Queueing-Inventory Systems with Catastrophes under Various Replenishment Policies

S Ozkar, A Melikov, J Sztrik - Mathematics, 2023 - mdpi.com
We discuss two queueing-inventory systems with catastrophes in the warehouse.
Catastrophes occur according to the Poisson process and instantly destroy all items in the …

Two-commodity queueing-inventory system with two classes of customers

S Ozkar, U Uzunoglu Kocer - Opsearch, 2021 - Springer
We analyze a two-commodity queueing-inventory system with an individual ordering policy.
The maximum storage capacity for the i th commodity is S_i S i (i= 1, 2)(i= 1, 2). The reorder …

Queueing-inventory models for a two-vendor system with positive service times

SR Chakravarthy, K Hayat - Queueing Models and Service …, 2020 - qmsm.nchu.edu.tw
Queueing-inventory systems wherein the demands are processed with random service
times have been getting a lot of attention recently. In such systems, each demand needs one …

Analysis of a production inventory system with MAP arrivals, phase-type services and vacation to production facility

Ş Özkar - Communications Faculty of Sciences University of …, 2023 - dergipark.org.tr
In this paper, we discuss a production inventory system with service times. Customers arrive
in the system according to a Markovian arrival process. The service times follow a phase …