Data envelopment analysis (DEA) Data envelopment analysis 2 Efficiency 2 Analytic hierarchy process (AHP) 1 Bank efficiency 1 Carbon 1 Carbon dioxide 1 City commercial banks 1 Decision framework 1 Decision making 1 Decision making unit 1 Decomposition 1 Developing countries 1 Directional distance function 1 Directional distance function (DDF) 1 Discrete event simulation (DES) 1 Eco-efficiency 1 Educational policies 1 Efficiency gain 1 Electricity generation 1 Emission control 1 Emission trading scheme 1 Endogenous directional distance function (DDF) 1 Ex antes 1 Financial instrument 1 Financial risk 1 Heterogeneity 1 Merging 1 Meta-technology frontier 1 Multi-echelon 1