Development of a forecasting model for investment in Tehran stock exchange based on seasonal coefficient

Reza Darvishinia; Hossein Ebrahimzadeh Shermeh; Samira Barzkar

Volume 6, Issue 4 , December 2019, , Pages 333-366

  The present study aims at suggesting a model for intelligent investment, through enabling us to be Autoregressive Integrated Moving Average of ARIMA and seasonal coefficient. In this study, the researcher uses seasonal fluctuation Model. The previous trend of time series, related to the companies for ...  Read More

Evaluating the efficiency of power companies using data envelopment analysis based on SBM models: a case study in power industry of Iran

Hossein Ebrahimzadeh Shermeh; Mohammad Hosein Alavidoost; Reza Darvishinia

Volume 5, Issue 4 , December 2018, , Pages 286-295

  Data Envelopment Analysis (DEA) is one of the most powerful and useful instrument to evaluate the efficiency of DMU’s. To measure the relative efficiency of multi-sector DMU’s, it is essential to focus on the activities which relate these sectors together.  The electrical firms or companies ...  Read More