Numéro courant

Vol. 3 No. 2 (2026): Nigerian Journal of Operations Research (NIJOR)

This is the third volume of the journal which follows a continuous publication model; articles are added as soon as they are finalized. The submission window for this issue remains open until June.

Publié: 2026-04-05

Articles

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NIJOR
ETHICS • PREPARATION • REVIEW • OPEN ACCESS • FEES
Nigerian Journal of Operations Research (NIJOR) | ISSN: 2141-7938
Interested in submitting to NIJOR? Authors should register on the journal website before submission. If you already have an account, log in and complete the journal’s submission steps (manuscript upload, metadata, and confirmation).
Journal Profile (About, Aim & Scope)
Nigerian Journal of Operations Research (NIJOR) is the official journal of the Operations Research Institute for Decision Sciences & Analytics of Nigeria (ORIDSAN). NIJOR publishes high-quality, peer-reviewed original papers that contribute to Operations Research, Decision Sciences, Data Science, Industrial Engineering, Decision Analytics, and Intelligent Computing.

Typical areas include (but are not limited to):
  • Applied Operations Research & Applied Statistics
  • Optimization and Mathematical Programming (discrete/continuous/stochastic), reliability, sustainability
  • Artificial Intelligence, Machine Learning, Soft Computing, Swarm & Evolutionary Computation
  • Decision Support Systems; Multi-criteria Decision Making/Analysis
  • Modelling & Simulation; Data Envelopment Analysis; Game Theory
  • Supply Chain & Inventory Management; Portfolio Optimization; Business Intelligence
  • Applications in agriculture, healthcare, finance, energy, logistics, manufacturing, defense, environment, and more
Publisher: ORIDSAN (distributed through Modibbo Adama University Academic Publishing Center — MAUAPC).
1. Publication Ethics
1.1 Editorial Ethics
Editors and the editorial office will:
  • Treat all manuscripts fairly regardless of gender, race, ethnicity, religion, or citizenship.
  • Ensure decisions are based on scholarly merit, originality, and relevance to NIJOR’s scope.
  • Provide responsible, objective feedback and maintain confidentiality.
1.2 Author Ethics
Authors must ensure:
  • Submissions are original, unpublished, and not under review elsewhere.
  • All sources and data are properly cited and acknowledged.
  • Conflicts of interest are disclosed (funding, affiliations, or personal relationships).
  • Any errors discovered after submission are communicated promptly to the editorial office.
1.3 Reviewer Ethics
Reviewers are expected to:
  • Review fairly based on intellectual content and methodological rigor.
  • Declare conflicts of interest and report suspected plagiarism or ethical issues.
  • Maintain confidentiality of manuscripts and review materials.
  • Provide constructive, respectful, and technically grounded feedback.
NIJOR aligns its publication ethics with widely used best-practice standards (e.g., COPE guidance) and expects integrity from all parties.
2. Article Preparation Guidelines
Format: MS Word (or compatible), A4 size, single column, double-spaced. Recommended font: Arial Narrow (or a closely similar sans-serif). Max length: 7,500 words (unless otherwise stated for special issues).
Margins: 1.2" (3cm) Left; 0.8" (2cm) Top, Bottom, Right.

Abstract Motivation, aim, methods, results, conclusion. Max 300 words. Provide up to 8 keywords.
Introduction Context, literature review, motivation, and research gap. Number as Section 1.
Materials & Methods Provide sufficient detail for replication (data, model, algorithms, assumptions, software). Number as Section 2.
Results & Discussion Present findings clearly with interpretation. You may split into separate “Results” and “Discussion” headings.
Conclusion Summarize key contributions and limitations. Recommendations are optional and may be unnumbered.
Figures & Tables Number sequentially (Fig. 1, Table 1). Table captions above; figure captions below. Ensure legibility in print and on screen.
Referencing Style (Example)
[1] Author, A. A., Author, B. B. (Year). Title of article. Journal Title, Volume(Issue), pages.
[2] Author, C. C. (Year). Title of book. Publisher, City.
[3] Author, D. D. (Year). Title of conference paper. In Proceedings of ..., pages.
Note: Follow the referencing style required by NIJOR (as specified in your call for papers or templates). Ensure consistency throughout the manuscript.
3. Review Process Guide
NIJOR uses editorial screening and peer review. Reviewers and editors may assess manuscripts using the following criteria:

✓ Originality: New, significant, useful contribution?

✓ Literature Survey: Adequate, current, and relevant?

✓ Aim & Objectives: Clearly stated and achieved?

✓ Methods: Appropriate theory, data, and rigorous methodology?		 ✓ Results/Discussion: Correct presentation; useful tables/figures?

✓ Implication: Impact on practice, policy, society, or R&D?

✓ Communication: Clarity of technical writing and structure?

✓ Decision: Accept, Minor/Major Revision, or Reject.
4. Open Access & Publication Fees
Gold Open Access: All NIJOR articles are freely accessible without subscription. Readers may read, download, copy, distribute, print, search, or link to the full text (with proper citation).
Acceptance & Processing: Free. However, for accepted papers, authors remit a publication fee to support final publication services (formatting, online hosting, and journal maintenance).

Nigerian Authors
₦30,000
Paid after acceptance
International Authors
USD 30
Paid after acceptance
Payment instructions are provided in the acceptance letter. Any optional hard-copy charges (if available) will be communicated separately.
5. Editorial Team (Selected)
Editors-in-Chief
Dr. Umar Muhammad Modibbo — Modibbo Adama University, Yola, Nigeria
Dr. David Joseph Olusegun — Babcock University, Nigeria
Handling Editor
Mohammed Mijinyawa — Modibbo Adama University, Yola, Nigeria
Selected Associate Editors
Dr. Irfan Ali (India)
Dr. Dragan Pamucar (Serbia)
Dr. Prasenjit Chatterjee (India)
Prof. Florentin Smarandache (USA)
Prof. Anand Nayyar (Vietnam)
Prof. Biswajit Sarkar (South Korea)
Local Editorial Members (Selected)
Prof. I. J. Dike
Dr. M. Barma
Prof. E. J. Garba
Dr. Orumie Ukamaka Cynthia
Prof. Asaju La’aru Bolaji
and more…