The main goal of this paper is to introduce a nonlinear DEA model for relative efficiency of the firms working closely with comparison of the Iranian Electricity Distribution Sector.

to maintaine their benefit. This research studies the effect of firm size on its efficiency in the firms of Tehran Stock Exchange during 2007 to 2011 with the sample of 75 firms. for this purpose, the Data Envelopment Analysis technique has been used...

The aim of this study is to investigate the level of efficiency in the private banks during 2011-2013 in Iran. Listed private banks in Tehran Stock Exchange has consider as sample of the study; by employing methods including data envelopment...

of international air transport association (IATA) in Middle East and North Africa (MENA) using non-parametric data envelopment analysis method. Data collected by statistical annual reports available in official airlines and air transport authorities websites for 20...

healthcare services. In this paper, a novel Data Envelopment Analysis Matrix (DEAM) approach is proposed for assessing the performance of nurses based on relative efficiency. The proposed model consists of five input variables (including type of employment...

throughout 30 provinces of Iran in two years 2008 and 2009. The model calculates a relative inefficiency index for each province and in each year, using Data Envelopment Analysis (DEA) method. Each province in each year is defined as a decision making unit...