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. ...