blurred). In this research, we propose Data Envelopment Analysis (DEA) efficiency models for passenger and freight transport … concerning both air transportation and railways. Our analysis results regarding larger Europe show that efficiency differences …

of Iran based on relevant data collected from the Ministry of Housing and Urban Development and Statistical Centres of … Iran during 2008-2009. The results show that only 37 percent of the states operate technically efficient and the average … overall efficiency score obtained by all the states is 0.90. On the other hand, 63 percent of the states are found to be …

This paper provides an empirical analysis of the determinants of energy efficiency in 32 power electric generation … relative technical efficiency and productivity change of these companies. In order to verify the stability of our DEA model and … technical efficiency of companies decreased during the study period. Nearly half of the companies (14) are below this average …

performance against the 'best-in-class'. The data from 20 public conventional power plants in Iran are used to illustrate and …