Volume 11 (2019)
Volume 10 (2018)
Volume 9 (2017)
Volume 8 (2016)
Volume 7 (2015)
Volume 6 (2014)
Volume 5 (2013)
Volume 4 (2012)
Volume 3 (2011)
Volume 2 (2010)
Volume 1 (2009)


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IJO follows a stringent peer review policy. Each article is first evaluated by the editor-in-chief for the originality and scientific rigor of its research. If it passes this first test, the editor-in-chief assigns at least two peer reviewers, to determine whether it meets the rigorous scientific standards, whether it requires revisions or whether it should be rejected. Only original material that meets IJO editorial standards will be published.


1. An Ant-Colony Optimization Clustering Model for Cellular Automata Routing in Wireless Sensor Networks

Aref Safari

Volume 12, Issue 2 , Autumn 2020, Pages 139-147

  High efficient routing is an important issue for the design of wireless sensor network (WSN) protocols to meet the severe hardware and resource constraints. This paper presents an inclusive evolutionary reinforcement method. The proposed approach is a combination of Cellular Automata (CA) and Ant Colony ...  Read More

2. Control Chart Recognition Patterns using Fuzzy Rule-Based System

Alireza Alinezhad; Ali Taherinezhad

Volume 12, Issue 2 , Autumn 2020, Pages 149-160

  Control Chart Patterns (CCPs) recognition is one the most important concepts in control chart application. Relating the patterns exhibited on the control chart to assignable causes is an ambiguous and vague task especially when multiple patterns co-exist. In this study, a fuzzy rule-based system is developed ...  Read More

Numerical Analysis
3. Meshless RBF Method for Linear and Nonlinear Sobolev Equations

Mehran Nemati; Mahmoud Shafiee; Hamideh Ebrahimi

Volume 12, Issue 2 , Autumn 2020, Pages 161-174

  Radial Basis Functions are considered as important tools for scattered data interpolation. Collocation procedure is a powerful technique in meshless methods which is developed on the assumption of radial basis functions to solve partial differential equations in high dimensional domains having complex ...  Read More

Data Envelopment Analysis
4. Efficiency Evaluation of Railway Freight Stations by Using DEA Approach

Davoud Haghighi; Reza Babazadeh

Volume 12, Issue 2 , Autumn 2020, Pages 175-185

  Railway freight stations roles as points in which traffic processes can be merged and diverged are of paramount importance. Numerous activities such as train formation, alighting and interchanging, technical checks are also done at these points. Due to the great importance of using railway infrastructures ...  Read More

Data Envelopment Analysis
5. Trust optimization in the single web services using a neuro‌-fuzzy system

baharak shakeri aski; Abolfazl Toroghi Haghighat; Mehran Mohsenzadeh

Volume 12, Issue 2 , Autumn 2020, Pages 187-201

  Due to improvement of Internet, employing web services is developed. By utilizing web services, distributed applications can exchange information. Trust is a main criterion to choose the proper web service as web services selection is a main issue which is still absorbing researchers to conduct research ...  Read More

Numerical Analysis
6. A New Eight-Order Iteretive Method for Solving Nonlinear Equations with High Efficiency index

Waziri Mohammed Yusuf; Kabir Saminu

Volume 12, Issue 2 , Autumn 2020, Pages 203-211

  In this paper, we develop a new eighth-order method for simple roots of non- linear equations via weight function and interpolation methods. The method requires only three(3) function evaluation and a derivative evaluation with 81/4 ≈ 1.682 efficiency index . Numerical comparison between the proposed ...  Read More

7. Earthwork Volume Optimization Using Imperialistic Competitive Algorithm to Minimize Energy Consumption of Agricultural Land Leveling

Isham Alzoubi

Volume 12, Issue 2 , Autumn 2020, Pages 213-231

  Land leveling is one of the most important steps in soil preparation for consequent objectives. Parallel policies need to take both energy and environmental subjects into the account as well as certain financial development and eco-friendly protection. Energy is one of the most important elements in ...  Read More

Non linear Programming
8. Solution of optimal control problems using shifted chebyshev polynomial

Hajar Alimorad

Volume 12, Issue 2 , Autumn 2020

  This paper suggests a new and efficient method for solving linear quadratic optimal control problems. A shifted chebyshev matrix approach is implemented for solving this problem. In this method, the problem of optimal control changes into a problem of non-linear programming which can be solved easily. ...  Read More

9. Efficiency Evaluation in Presence of Undesirable and Negative Factors

Mahnaz Maghboulı; Mahdi Eini; farhad taher

Volume 12, Issue 2 , Autumn 2020

  Data envelopment analysis (DEA) has been proven as an excellent data-oriented efficiency analysis method for comparing decision making units (DMUs) with multiple inputs and multiple outputs. In conventional DEA models, it is assumed that the input or output variables are all non-negative and desirable. ...  Read More

Operation Research
10. Stability Theorem and Results for Quadrupled Fixed Point of Contractive Type Single Valued Operators

Samuel Adamariko Aniki; Kamilu Rauf

Volume 12, Issue 2 , Autumn 2020

  This paper present the existence and uniqueness of quadrupled fixed point theorems, whose method is quite primarily based definitely on Perov-type fixed point theorem for contraction in metric spaces equipped with vector-valued matrices. Furthermore, the study consist of Ulam-Hyers stability results ...  Read More

11. Legendre Wavelet Method for a Class of Fourth-Order Boundary Value Problems

Sarkout Abdi; Aram Azizi; Mahmoud Shafiee; Jamshid Saeidian

Volume 12, Issue 2 , Autumn 2020

  In this paper we apply an approximate method based on Galerkin approach with Legendre wavelets basis, on a class of fourth order boundary value problems. The approach reduces the main equation to a system of linear algebraic equations that could be solved numerically. The operational matrix of the method ...  Read More

Mathematical Engineering
12. Lump solutions of Biharmonic equation

Azadeh Badiepour; Zainab Ayati; Hamideh Ebrahimi

Volume 12, Issue 2 , Autumn 2020

  In this article, through symbolic computation With Maple, we get the solution of the (1 + 1)-dimensional Biharmonic-equation. These solutions, which we call lump solution, obtained using square functions, are rationally localized in all directions in the space. It should be noted that not all nonlinear ...  Read More

Data Envelopment Analysis
1. An Analysis of the COVID-19 Contagion Growth in European Countries

Hadi Shirouyehzad; Javid Jouzdani; Mazdak Khodadadi-Karimvand

Volume 12, Issue 1 , Spring 2020, , Pages 11-19

  The COVID-19 pandemic has affected many people around the globe. Europe, as one of the most seriously affected continents, has been struggling with the novel coronavirus for several months. Obviously, outbreak response management plays a critical role in the impact of the disease. Therefore, in this ...  Read More

2. Determining the Key Indicators affecting Electronic Customer Relationship Management (e-CRM) Using an integration of balanced scorecard and fuzzy screening techniques (Case Study: Companies Covered by Parsian Data-Processors Group)

abbas shahnavazi; Mehran Nemati Gonbaghi; Seyedeh Faezeh Teymouri; Bahman Ghasemi dakdare

Volume 12, Issue 1 , Spring 2020, , Pages 21-32

  Nowadays, increasing competition among companies and the huge cost of attracting new customers has led to companies seeking to retain existing customers rather than looking to attract new customers. These factors together have led to the emergence of customer relationship management. Thanks to the development ...  Read More

Data Envelopment Analysis
3. How to Target Balanced Scorecard Indicators in a DEA-BSC Integrated Model

Mohammad Fallah; Esmaeil Najafi

Volume 12, Issue 1 , Spring 2020, , Pages 1-9

  Performance measurement is always one of the most important tasks of managers, so knowledge management is measurement knowledge, and if we can measure something, we can no doubt control it, and therefore we cannot manage it. In this paper, according to the Malmquist productivity index, an index is used ...  Read More

4. Identification and Prioritization of Factors Affecting Authentic Leadership Deployment at the University of Medical Sciences by AHP

Mehrzad Abdolahzadeh Laleh Dashti; Mehrdad Goudarzvand Chegini; Hamidreza Rezaei Kelidbari

Volume 12, Issue 1 , Spring 2020, , Pages 45-53

  Authentic leadership is a pattern of leadership behavior that, by possessing positive psychological abilities, can create a special place for service organizations. The purpose of this study was to identify and prioritize the factors influencing the establishment of authentic leadership in the University ...  Read More

Data Envelopment Analysis
5. A Review of Metaheuristic Algorithms and Data Envelopment Analysis

Mohsen Vaez-ghasemi; Zohreh Moghaddas; Hamid Askari; Feloora Valizadeh

Volume 12, Issue 1 , Spring 2020, , Pages 115-137

  Today, many activities from businesses to engineering design, routing on the Internet, and even routing of foodstuff trucks require programming and optimization. Many of these problems have no determinate solution and cannot be solved easily. To solve these problems, algorithms have been developed inspired ...  Read More

1. Approximate solution of nonlinear fractional order model of HIV infection of CD4+T via Differential Quadrature Radial Basis Functions technique

Kokab Chalambari; Hamideh Ebrahimi; zainab ayati

Articles in Press, Accepted Manuscript, Available Online from 27 December 2020

  In this research, differential quadrature radial basis functions Method is performed to a fractional order model of HIV infection of CD4+T. Here, Caputo fractional derivative is used and it is approximated by forward finite difference method. Results have been compared with the results of Laplace Adomian ...  Read More

2. Numerical solution of Fredholm and Volterra integral equations using the normalized Müntz−Legendre polynomials

Fereshteh Saemi; Hamideh Ebrahimi; Mahmoud Shafiee

Articles in Press, Accepted Manuscript, Available Online from 27 December 2020

  The current research approximates the unknown function based on the normalized Müntz−Legendre polynomials (NMLPs) in conjunction with a spectral method for the solution of nonlinear Fredholm and Volterra integral equations. In this method, by using operational matrices, a system of algebraic ...  Read More

Islamic Azad University, Rasht Branch

Journal News

The Editorial board are happy to inform researchers and scientists that "Iranian Journal of optimization" start working again after a period of time.