This paper proposes a non-radial Malmquist CO 2 emission performance index (NMCPI) for
measuring dynamic changes in total-factor CO 2 emission performance over time. This index …

This study examines and decomposes dynamic changes in total factor carbon emissions
performance within the transportation sector in China, incorporating the impact of regional …

The current mode of economic development in China is typified by high growth, high energy
consumption, and high pollution characteristics and this has caused great stress on both …

Environmental protection, including the prevention of air pollution and health hazard
materials such as PM2. 5 and PM10, is now a very serious policy issue in China after …

This paper presents an efficiency assessment of selected OECD countries using a Slacks
Based Model with undesirable or bad outputs (SBM-Undesirable). In this research, SBM …

Taking into account the heterogeneity of production technologies across Chinese cities, we
adopted a meta-frontier function and a non-radial directional distance function to construct …

In this paper, the energy efficiency of airlines has been studied with number of employees,
capital stock and tons of aviation kerosene as the inputs and Revenue Ton Kilometers …

The current mode of production in China is extensive and inefficient and has caused great
stress on both resources and the environment. This paper focuses on analyzing the sources …

In this paper, transportation carbon efficiency is redefined, and its inputs and outputs are
obtained from a literature review. Carbon, capital and labor are selected as the inputs, and …

Analyses and optimizations of material flows and energy flows in iron and steel industry in
the world are introduced in this paper. It is found that the recovery and utilization of residual …