Volume 12 (2020)
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)
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

Volume 13, Issue 1 , Spring 2021

  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

Volume 13, Issue 1 , Spring 2021

  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

Operation Research
3. A novel solving method for multi-objective decision making problems under fuzzy conditions

Alireza Alinezhad; abolfazl kazemi; Mojgan Khorasani

Volume 13, Issue 1 , Spring 2021

  This paper proposes a satisfying optimization method for fuzzy multiple objective optimization problem. Actually, the presented method realizes the trade-off between optimization and fuzzy importance requirement. Generally, the main aim of the presented approach is to make the more important objective ...  Read More

Data Envelopment Analysis
4. Factors affecting deviations of efficiency in distance-based Common Set of Weight -DEA models

Saeid Shahghobadi

Volume 13, Issue 1 , Spring 2021

  There are different approaches to generate a common set of weights in DEA based on the p - distance measure. Deviation of an efficiency score derived from a CSW from target efficiency score may be related to the model and the parameter p. In this study, we try to clarify points about choosing p, model, ...  Read More

Data Envelopment Analysis
5. Application of DEA to measure the efficiency of Open Source software projects

Ehsan Zanboori; fatemeh Rostami; Saeid Ghobadi

Volume 13, Issue 1 , Spring 2021

  This paper evaluates the relative performance of open source software projects by evaluating multiple project inputs and multiple project outputs by using data envelopment analysis (DEA) model. The DEA model produces an efficiency score for each project based on project inputs and outputs. One of the ...  Read More