Energy security has been an actively studied area in recent years. Various facets have been covered in the literature. Based on a survey of 104 studies from 2001 to June 2014, this paper reports the findings on the following: energy security definitions, changes in the themes of these...

This paper looks at carbon dioxide (CO2) emissions from the point of view of production theory and proposes a new total factor CO2 emissions performance index. This is done using directional distance function followed by stochastic frontier analysis techniques in order to estimate the index....