Volume 1, Issue 1

 

ارسال های اخیر

  • An efficiency measurement model in fuzzy environments, using data envelopment analysis 

    Molavi, F؛ Aryanezhad, M.B؛ Shah Alizadeh, M (Islamic Azad University, South Tehran Branch, 2005-09-01)
    Data Envelopment Analysis (DEA) is a technique used to compare efficiency in various sectors such as hospitals, chain stores, and dealerships. It represents a set of linear programming techniques and uses deter-ministic ...

  • A fuzzy approach to solve a multi-objective linear fractional inventory model 

    Sadjadi, S.J؛ Aryanezhad, M.B؛ Sarfaraz, A (Islamic Azad University, South Tehran Branch, 2005-09-01)
    In this paper, the researchers present a multi-objective linear fractional inventory model using fuzzy pro-gramming. The proposed method in this paper is applied to a problem with two objective functions. The re-sulted ...

  • Estimating process capability indices using ridge regression 

    Raissi, S؛ Noorossana, R (Islamic Azad University, South Tehran Branch, 2005-09-01)
    Process capability indices show the ability of a process to produce products according to the pre-specified requirements. Since final quality characteristics of a product are usually interrelated to its previous amounts ...

  • Inverse feasible problem 

    Amin, GH.R (Islamic Azad University, South Tehran Branch, 2005-09-01)
    In many infeasible linear programs it is important to construct it to a feasible problem with a minimum pa-rameters changing corresponding to a given nonnegative vector. This paper defines a new inverse problem, called ...

  • Team size effect on teamwork productivity using information technology 

    Tohidi, H؛ Tarokh, M.J (Islamic Azad University, South Tehran Branch, 2005-09-01)
    Teams are defined as high performing task groups whose members are actively interdependent and share common performance objectives. This definition suggests that only those groups who perform at high levels due to their ...

  • A multi-criteria vehicle routing problem with soft time windows by simulated annealing 

    Tavakkoli-Moghaddam, R؛ Safaei, N؛ Shariat, M.A (Islamic Azad University, South Tehran Branch, 2005-09-01)
    This paper presents a multi-criteria vehicle routing problem with soft time windows (VRPSTW) to mini-mize fleet cost, routes cost, and violation of soft time windows penalty. In this case, the fleet is heterogene-ous. The ...

  • A hybrid method to find cumulative distribution function of completion time of GERT networks 

    Hashemin, S.S؛ Fatemi Ghomi, S.M.T (Islamic Azad University, South Tehran Branch, 2005-09-01)
    This paper proposes a hybrid method to find cumulative distribution function (CDF) of completion time of GERT-type networks (GTN) which have no loop and have only exclusive-or nodes. Proposed method is cre-ated by combining ...