regions’ environmental efficiency in greenhouse gas emissions. A sample of ninety eight regions (NUTS 2 level) from Germany … environmental efficiency levels. In addition it appears that the effect of regional economic growth on regions’ environmental … efficiency levels varies between regions and countries due to different national administrative arrangements on the …

environmental efficiency and GDP per capita levels. As an illustrative example we apply our model to USA regional data revealing an … inverted ‘U’ shape relationship between regional environmental efficiency and per capita income. The results derived from a non …

of dealing with undesirable outputs, but the problem is that it has no unit-invariant measurement of efficiency, which … problem of unit-invariance, and the efficiency keeps unchanged in radial and non-radial models after data normalization. A … unit-invariant efficiency measure for directional distance function is developed based on DEA data normalization. …

externalities in economic theory. Negative externalities are usually omitted from efficiency assessments (i.e., applications of Data …. Desirable and undesirable outputs are incorporated to obtain a clear view of the efficiency status of the national health …

This paper applies a data envelopment analysis (DEA) method to assess technical efficiency of both private and public …

units-invariant measure of efficiency, which limits its accuracy. In this paper, we develop a data normalization method for … DEA, which is a universal solution for the problem of units-invariance in DEA. The efficiency scores remain unchanged when … models. Based on normalized data, a units-invariant efficiency measure for the directional distance function model is defined. …

between regional environmental efficiency and economic growth. The proposed model using conditional directional distance … functions incorporates the effect of regional economic growth on regions’ environmental efficiency levels. The results from the …

The objective of this paper is to provide a comprehensive efficiency measures to estimate the performances of OECD and … decomposes the comprehensive efficiency measure into individual input/output components’ inefficiency scores that are useful for …