Objective: The aims of this study were to determine energy efficiency and CO2 use pattern of grape production in Zanjan province, Iran by a non-parametric method of data envelopment analysis (DEA). Methods: Initial data were collected using a face to face questionnaire from 42 orchards in Abhar city of Zanjan province which is one of the most important centers of grape production in ...

This paper uses Data Envelopment Analysis and econometric methods to evaluate the efficiency of Turkish secondary education. It identifies scale diseconomies and relates them to the underlying structural characteristics of the system. Some ideas on improving performance are offered. The role of heterogeneity and centralization is highlighted. Heterogeneity is modeled as an undesirable measure. ...

This article reviews the estimation of Returns To Scale (RTS) in Data envelopment analysis (DEA), presented by Golany and Yu and proposes a new method to do this estimation. we show that the new method does not have the shortcoming of the previous one. Furthermore, it is able to evaluate Returns To Scale (RTS) to the right and left of the given unit in all conditions. This method is elaborated ...