Volume 2, Issue 7

 

ارسال های اخیر

  • Properties of eigenvalue function 

    Alizadeh Nazarkandi, H. (Science and Research Branch, Islamic Azad Universityدانشگاه آزاد اسلامی واحد علوم و تحقیقات, 2016-12-01)
    For the eigenvalue function on symmetric matrices, we have gathered a number of it's properties.We show that this map has the properties of continuity, strict continuity, directional ...

  • Increasing the discrimination power the decision making units based on reducing dispersion of weights in the data envelopment analysis 

    Pourhabib, A؛ Amirteimoori, A.R؛ Kordrostami, S.؛ Kazemi Matin, R. (Science and Research Branch, Islamic Azad Universityدانشگاه آزاد اسلامی واحد علوم و تحقیقات, 2016-12-01)
    Data envelopment analysis which is a nonparametric technique for evaluating relative efficiency of the decision making units with multiple inputs and outputs, has ...

  • An Iterative Scheme for Generalized Equilibrium, Variational Inequality and Fixed Point Problems Based on the Extragradient Method 

    Jahedi, S.؛ Payvand, M. A. (Science and Research Branch, Islamic Azad Universityدانشگاه آزاد اسلامی واحد علوم و تحقیقات, 2016-12-01)
    The problem ofgeneralized equilibrium problem is very general in the different subjects .Optimization problems, variational inequalities, Nash equilibrium problem

  • Efficiency and Effectiveness with interval indices in stochastic environments 

    kazem nadi, S.؛ Rostamy malkhalife, M. (Science and Research Branch, Islamic Azad Universityدانشگاه آزاد اسلامی واحد علوم و تحقیقات, 2016-12-01)
    Non-parametric DEA is a technique on the basic of mathematical programming to determine the efficiency of homological decision making ...

  • The proposed cost and profit models in presence of flexible measures 

    Matroud, F.؛ Tohidi, Gh. (Science and Research Branch, Islamic Azad Universityدانشگاه آزاد اسلامی واحد علوم و تحقیقات, 2016-12-01)
    In conventional DEA, measures are classified as either input or output. However, in some real cases there are variables whose status is not known as input or output before assessment. These variable are known as flexible ...

  • Simulating and Forecasting OPEC Oil Price Using Stochastic Differential Equations 

    Farnoosh, R.؛ Nabati, P.؛ Azizi, M. (Science and Research Branch, Islamic Azad Universityدانشگاه آزاد اسلامی واحد علوم و تحقیقات, 2016-12-01)
    The main purpose of this paper is to provide a quantitative analysis to investigate the behavior of the OPEC oil price. Obtaining the best mathematical equation to describe the price and volatility of oil has a great ...