International Journal of Mathematics in Operational Research

2009 - 2025

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Volume 31, issue 1, 2025

Strong perturbation bounds for the stationary distribution of the main multi-server retrial queue model pp. 1-40

Nabil Ait Yala, Badredine Issaadi and Karim Abbas

A queueing model with balking, server vacation and working breakdown pp. 41-59

Kamlesh Kumar and Madhu Jain

Integrated management and optimisation of vaccination and treatment processes in a batching system with observation and limited space pp. 60-94

G. Ayyappan and S. Sankeetha

A study on transient solution of fractional M / M /2 queue with homogeneous and heterogeneous servers pp. 95-109

N. Sujatha and G.V.S.R. Deekshitulu

Solving the vehicle routing problem with search algorithms: a comparative analysis pp. 110-141

Oladimeji Samuel Sowole

Volume 30, issue 4, 2025

New Weibull-Pareto Poisson distribution: properties, actuarial measures and applications pp. 415-434

Fastel Chipepa, Mavis Pararai and Wilbert Nkomo

Joining strategy for double orbit retrial queue with imperfect service and vacation under N-policy pp. 435-469

Palak Mehta and Madhu Jain

Optimised variable step-size algorithm for the solution of dynamical systems pp. 470-500

Joshua Sunday, Richard Olatokunbo Akinola, Joshua Amawa Kwanamu and Dominic Raymond

A new heavy-tailed generalised exponentiated half logistic-G distribution with actuarial measures and applications pp. 501-538

Thatayaone Moakofi, Agolame Puoetsile and Broderick Oluyede

Volume 30, issue 3, 2025

On the numerical solution and mathematical modelling of the global warming data from the years 1970 to 1994 and from 1995 to 2019 pp. 267-294

Zuhair A. Al-Hemyari and Jamal N. Al Abbasi

Pricing a guaranteed minimum maturity benefit in uncertain markets pp. 295-307

Justin Chirima, Frank Ranganai Matenda and Mabutho Sibanda

Introduction of an arc rank order statistic for analysis of optimal solutions in travelling salesman problems pp. 308-328

Jerry L. Shaw, Donovan Fuqua, Hansuk Sohn and Manuel Ivan Rodriguez Borbon

Uncertain multi-objective student project assignment problem by fuzzy programming technique pp. 329-349

Sunil B. Bhoi and Jayesh M. Dhodiya

Cost optimisation of MMAP / PH (1), PH (2)/1 pre-emptive priority retrial queueing model with standby server, orbital search, server breakdowns, phase type repairs and impatient customers pp. 350-391

G. Ayyappan, K. Thilagavathy and Rakesh Kumar

Optimal mean-variance portfolio selection with uncertain time horizon in a regime-switching market when asset returns are market path-dependent pp. 392-414

Reza Keykhaei

Volume 30, issue 2, 2025

Fractional Black-Scholes equation described by the conformable fractional derivative with three different methods pp. 135-151

C. Vijayan, R. Manimaran and N. Racshitha

A queueing system with heterogeneous arrivals, two kinds of vacations and impatient customers pp. 152-166

R.S. Yohapriyadharsini, V. Suvitha and Rakesh Kumar

Graph theory for data cryptography security pp. 167-184

Sangeetha Nandigam and Perumali Sundarayya

Copula approach to predict reliability factors of a wide range communication system pp. 185-205

Abdulkareem Lado Ismail, Abdulhadi Aminu and Ibrahim Yusuf

A two-server tandem queueing model with Markovian arrival process, phase type service, working vacation, feedback, re-service, unreliable server, interrupted closedown and customers intolerance pp. 206-250

G. Ayyappan and G. Archana Alias Gurulakshmi

Reduction of bounded variables in integer linear programming problems pp. 251-265

Abdelkrim Rezzag, Mohand Ouamer Bibi and Abdelhek Laouar

Volume 30, issue 1, 2025

Analysis of batch arrival bulk service priority queue with multiple vacation, close down, setup, differentiate breakdown, and repair pp. 1-21

G. Ayyappan and S. Nithya

Optimal greening efforts, pricing and inventory strategies for non-instantaneous deteriorating perishable products under price, freshness and green efforts dependent demand with price discount pp. 22-45

Dharmesh K. Katariya and Kunal T. Shukla

Supplier-retailer-customer trade credit policy for perishables pp. 46-62

P. Jayashri and S. Umamaheswari

Fuzzy weak autocatalytic set for decision making and its application to the project manager selection pp. 63-80

Siti Salwana Mamat, Siti Rahmah Awang and Tahir Ahmad

Analysis of MAP/PH/1 retrial queueing system with two-stage vacations with imperfect service, N-policy service, delayed feedback, unreliable server and discouragement customer pp. 81-110

G. Ayyappan and N. Arulmozhi

The synthesis of the AHP as a well-posed mathematical problem and matrix norms appropriate for sensitivity analysis via condition number pp. 111-134

Gustavo Benitez Alvarez, Rafael Guimarães de Almeida, Cecília Toledo Hernández and Patrícia Alves Pereira de Sousa

Volume 29, issue 4, 2024

Analysis of MAP / PH / 1 queueing system with discarding customers having imperfect service, single vacation, feedback and impatient customers pp. 411-440

G. Ayyappan and G. Archana Alias Gurulakshmi

The Topp-Leone-Marshall-Olkin-G power series class of distributions: properties and applications pp. 441-462

Peter Tinashe Chinofunga, Broderick Oluyede and Fastel Chipepa

Behavioural analysis of a fly ash bricks manufacturing system pp. 463-481

Ritu Rathi

Pricing and return strategies in a dual-channel closed loop supply chain considering complementary products and sales effort pp. 482-510

Subir Guin, Amit Sarkar and Brojeswar Pal

Solving an exploitation-based Marxian fuzzy EOQ model pp. 511-541

Biswajit Roy, Kousik Bhattacharya and Sujit Kumar De

Volume 29, issue 3, 2024

An EOQ model for deteriorating item with backorder and time dependent exponential demand pp. 291-308

Prokash Mondal, Sriparna Chowdhury, Pritha Das, Sanat Kumar Majumder and Kajal De

Achieving optimal resources utilisation in industrial environments: combining polling methods and an exhaustive service discipline with an unreliable service pp. 309-344

G. Ayyappan and S. Sankeetha

On independent domination topological indices of graphs pp. 345-353

Anjaneyulu Mekala, U. Vijaya Chandra Kumar and R. Murali

A sustainable inventory system under the impact of partial trade credit pp. 354-376

Sonia Dua, Sandeep Kumar Mogha and Himani Dem

Recent trends of economic production quantity models (2000-2022) - a literature review pp. 377-409

R. Suvetha, K. Rangarajan and P. Rajadurai

Volume 29, issue 2, 2024

Do asymmetric effect and volatility persistence exist in the Nigerian stock market? pp. 145-162

Udemezue Ndubisi Nnakee, Chi Aloysius Ngong, Chinyere C. Onyejiaku and Josaphat U.J. Onwumere

Finite population and finite capacity single server batch service queues with compulsory working vacation pp. 163-190

R. Kalyanaraman and G. Janani

New conditions of dominance and optimality for single-machine scheduling problems with nested execution intervals pp. 191-213

Samia Ourari and Farouk Yalaoui

Tetracontatetragonal fuzzy number with application of fuzzy transportation problem pp. 214-233

Sudha Rana, Deepak Kumar and Anita Kumari

The Harris-G power series class of distributions with applications pp. 234-257

Wellington Fredrick Charumbira, Broderick Oluyede, Fastel Chipepa and Lesego Gabaitiri

An intelligent chatbot using deep learning with bidirectional GRU and CNN model pp. 258-270

Vaibhav Ghildiyal

Fuzzy multi-objective solid transportation problem: genetic algorithm-based solution approach pp. 271-290

Shubha Agnihotri and Jayesh M. Dhodiya

Volume 29, issue 1, 2024

Solving an EPQ model with Lagrange interpolating polynomial function via game theory approach pp. 1-24

Anup Khan, Sujit Kumar De and Prasun Kumar Nayak

An inventory model and supply chain coordination for ameliorating items allowing for shortages under non-instantaneous replenishment pp. 25-50

Yunfeng Zhang and Ying Qin

Development of a block method for solving multiple order ODEs pp. 51-65

Emmanuel Oluseye Adeyefa, Adewale Adeyemi James, Adeyemi Sunday Olagunju and Folake Lois Joseph

Review the concepts of queues and inventory models pp. 66-93

P. Indumathi and K.`. Karthikeyan

Solving triangular fully fuzzy linear fractional programming problem via parametric approach pp. 94-108

Rebaz Bahram Mustafa and Nejamddin Abdulla Sulaiman

Workforce skill-enhancement policies in manpower systems: modelling, analysis, and structural control pp. 109-143

Kannan Nilakantan