Environmental efficiency analysis and estimation of CO2 abatement costs in dairy cattle farms in Umbria (Italy): A SBM-DEA model with undesirable output

2018 ◽  
Vol 197 ◽  
pp. 895-907 ◽  
Author(s):  
Lucio Cecchini ◽  
Sonia Venanzi ◽  
Antonio Pierri ◽  
Massimo Chiorri
Keyword(s):  
Dairy Cattle ◽  
Efficiency Analysis ◽  
Environmental Efficiency ◽  
Undesirable Output ◽  
Abatement Costs ◽  
Dea Model ◽  
Cattle Farms

scholarly journals Environmental Efficiency Evaluation in the Top Asian Economies: An Application of DEA

Mathematics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 889
Author(s):  
Chia-Nan Wang ◽  
Hoang-Phu Nguyen ◽  
Cheng-Wen Chang
Keyword(s):  
Sustainable Development ◽  
Data Envelopment Analysis ◽  
Environmental Efficiency ◽  
Data Envelopment ◽  
Efficiency Evaluation ◽  
Undesirable Output ◽  
Dea Model ◽  
Asian Economies ◽  
Dea Method ◽  
Bad Outputs

Sustainable development has become a global catchphrase in the recent development age. This leads to the growth of various methodologies in evaluating environmental efficiency, such as the Data Envelopment Analysis (DEA) method. The purpose of this study is to propose an extended DEA model, i.e., the undesirable output model, in measuring the relative eco-efficiency scores across nations. The study collected the data of inputs, namely bad outputs and good outputs of the top 20 Asian economies in the period of 2005–2019, and then estimated the environmental efficiency of each country and classified them. The results have shown that there are four nations having higher average environmental efficiency than others. Japan is a good example of sustainable development that simultaneously balances economic development and environmental protection. The study has also discussed possible solutions for improvement to the group of nations with low environmental efficiency. Contributing to applying a novelty extended DEA model, this work recommends a more precise model, taking the weight of outputs into account for further studies.

scholarly journals Environmental Efficiency Evaluation of Chinese Industry Systems by Using Non-Cooperative Two-Stage DEA Model

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Xiao Shi
Keyword(s):  
Production System ◽  
Production Systems ◽  
Efficiency Analysis ◽  
Environmental Efficiency ◽  
Accurate Information ◽  
Two Stage ◽  
Dea Model ◽  
Chinese Industry ◽  
Dea Models ◽  
Stage System

In evaluating the environmental efficiency analysis of Chinese industry systems, data envelopment analysis (DEA) has been a popular method. However, the production system is often treated as a black box in conventional DEA models. This study considers the internal structure of the production system to evaluate the environmental efficiency, which is characterized as a two-stage system, i.e., production subsystem and pollutant treatment subsystem. And, in reality, some subsystems in two-stage production systems are not equally important, and this kind of two-stage systems usually has the feature that one subsystem dominates the other. Thus, we consider the leader and follower relationship in the environmental efficiency analysis. A new non-cooperative two-stage DEA model considering undesirable intermediates and undesirable outputs is proposed to calculate the environmental efficiency. The proposed method is then applied to 30 regional industry systems of China in the year 2010. Thus, each DMU’s environmental efficiencies for the overall system as well as both subsystems could be analyzed by the proposed approach. More accurate information could be provided for environmental management.

scholarly journals EFFICIENCY ANALYSIS OF AIRPORTS IN TURKEY CONSIDERING ENVIRONMENTAL EFFECTS

2018 ◽  
Vol 2 (1) ◽  
pp. 65 ◽  
Author(s):  
Berna H. Ulutas
Keyword(s):  
Efficiency Analysis ◽  
Study Data ◽  
Data Envelopment ◽  
Undesirable Output ◽  
Noise Levels ◽  
Gas Emission ◽  
Emission Data ◽  
Dea Model ◽  
Definition Of ◽  
First Time

Aim: This paper aims to attract attention to the “green airport” term that is basically related with environmental legislations.Design / Research methods: A Data Envelopment Analysis (DEA) model is introduced to assess the efficiency of 22 airports in Turkey with the definition of undesirable output as emission values.Conclusions / findings: Results illustrate that only two airports are efficient based on the considered outputs and undesirable output.Originality / value of the article: Up-to-best knowledge, green gas emission data of airports in Turkey are considered in a DEA model for the first time. To minimize the undesirable output, it is considered as a desirable input in the model. Results are expected to support official authorities during decision making.Limitations of the study: Data for noise levels and the exposed area and/or number of exposed people and buildings were not available for the airports in concern.

scholarly journals Operational and Environmental Efficiencies of Japanese Electric Power Companies from 2003 to 2015: Influence of Market Reform and Fukushima Nuclear Power Accident

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Mika Goto ◽  
Toshifumi Takahashi
Keyword(s):  
Electric Power ◽  
Nuclear Power ◽  
Structural Changes ◽  
Operational Efficiency ◽  
Environmental Efficiency ◽  
Market Reform ◽  
Undesirable Output ◽  
Data Set ◽  
Dea Model ◽  
Desirable Output

This study measures operational and environmental efficiencies of nine incumbent electric power companies (EPCos) in Japan and examines an influence of market reform and Fukushima nuclear power plant accident on efficiencies using a data set from 2003 to 2015. This study applies output-oriented radial data envelopment analysis (DEA) model to the measurement of efficiencies. Three inputs and three desirable outputs are used for the measurement of operational efficiency, and one undesirable output besides inputs and desirable outputs is used to measure environmental efficiency. EPCos produce not only desirable output, for example, electricity, but also undesirable output, for example, CO2, for their operations. For the measurement of environmental efficiency, this study uses a unique DEA model that assumes occurrence of ecotechnology innovation. The results reveal that environmental efficiency of EPCos is mostly invariant over the period of this study, while operational efficiency decreases in the same period. In addition, the results present that Japanese EPCos make efforts to reduce CO2 emissions by promoting ecotechnology innovation. The Kruskal–Wallis rank sum test indicates differences in operational and environmental efficiencies among EPCos. Such performance differences might become larger as market liberalization advances, which could lead to further structural changes of the industry.

scholarly journals Survey of perceptions and attitudes of an international group of veterinarians regarding antibiotic use and resistance on dairy cattle farms

2021 ◽  
Vol 188 ◽  
pp. 105253
Author(s):  
Sebastian G. Llanos-Soto ◽  
Neil Vezeau ◽  
Michelle Wemette ◽  
Ece Bulut ◽  
Amelia Greiner Safi ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Antibiotic Use ◽  
International Group ◽  
Perceptions And Attitudes ◽  
Cattle Farms

Influence on the implementation of biosecurity measures in dairy cattle farms: Communication between veterinarians and dairy farmers

2021 ◽  
Vol 190 ◽  
pp. 105329
Author(s):  
Sebastián Moya ◽  
Kin Wing (Ray) Chan ◽  
Stephen Hinchliffe ◽  
Henry Buller ◽  
Josep Espluga ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Dairy Farmers ◽  
Cattle Farms
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