Scenario-based energy efficiency and productivity in China: A non-radial directional distance function analysis

Technical inefficiency of Vietnamese pangasius farming: A data envelopment analysis

“…At the first stage, the Russell-type (input-output) directional distance function was used to compute the input-and output-specific technical inefficiency (Gaitán-Cremaschi, van Evert, Meuwissen, and Oude Lansink (2015), Mahlberg andSahoo (2011), andWang, Zhou, andZhou (2013)). The Russell-type (input-output) directional distance function accounts for the inefficiency due to the slacks in inputs and outputs.…”

A new slacks-based measure of Malmquist–Luenberger index in the presence of undesirable outputs

“…As indicated in Fukuyama and Weber (2009) and Zhou et al (2012) a conventional DDF model may overestimate the efficiency when non-zero slacks appears in the efficiency measures, hence, a new generation of non-radial DDF model has been introduced to the DEA literature (Fukuyama et al, 2011) and have been successfully applied in many applications (Fukuyama and Weber, 2010;Mahlberg and Sahoo, 2011;Sahoo et al, 2011;Wang et al, 2013;Zhou et al, 2012). DDF models have also been applied in many disciplines including energy efficiency , assessment of banks (Barros et al, 2012), agriculture (Blancard et al, 2006).…”

“…The same problems can occur when super efficiency is calculated using DDF DEA models. Here it is important to note that, non-radial DDF with undesirable output are vulnerable of this infeasibility problem, when they are employed for ML index measurement (Wang et al, 2013).…”

“…However non-radial models like those are employed by Zhou et al (2012) and Wang et al (2013) are more appropriate for efficiency measurement in the presence of comprehensive information and when the stress is on compliance with the exogenous rules instead of flexibility of efficiency measurement models.…”

Iran’s energy scenarios on a 20-year vision

“…Or Paltsev (2014) explored the long-term (up to 2050) scenarios of Russian natural gas exports to Europe and Asia using the MIT Emissions Prediction and Policy Analysis (EPPA) model. Some researches were concentrated on different aspects of energy: Wang et al (2013) considered energy efficiency and productivity to develop three production scenarios, namely energy conservation (EC), energy conservation and emission reduction (ECER), and energy conservation, emission reduction and economic growth (ECEREG) to assess China's energy efficiency and productivity growth during the period of Eleventh Five-Year Plan. Vuuren et al (2003) developed a set of energy and emission scenarios for China between 1995 and 2100, based on the global baseline scenarios published by IPCC.…”