Results 241 to 250 of about 5,211 (269)
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Airline energy efficiency measures using the Virtual Frontier Network RAM with weak disposability
Transportation Planning and Technology, 2017ABSTRACTIn this paper, airline energy efficiency is divided into three stages: the operations stage, the services stage and the sales stage. Greenhouse gas emissions are treated as an undesirable output of the services stage. This new three-stage strategic operating framework is a modification of existing models.
Ye Li, Qiang Cui
exaly +2 more sources
Energy Economics, 2012
The economic concept of weak and strong disposability has long dominated studies on DEA (Data Envelopment Analysis) environmental assessment. This study reviews the two disposability concepts from their conceptual and methodological implications.
Mika Goto
exaly +2 more sources
The economic concept of weak and strong disposability has long dominated studies on DEA (Data Envelopment Analysis) environmental assessment. This study reviews the two disposability concepts from their conceptual and methodological implications.
Mika Goto
exaly +2 more sources
Energy, 2019
Abstract In response to the rapid growth in air transport CO2 emissions, International Civil Aviation Organization proposed the “Carbon Neutral Growth from 2020” strategy (CNG2020 strategy). The total CO2 emission reduction is investigated for 28 airlines during 2021–2023 under CNG2020 strategy based on the predicted data by BP neural network.
Qiang Cui
exaly +2 more sources
Abstract In response to the rapid growth in air transport CO2 emissions, International Civil Aviation Organization proposed the “Carbon Neutral Growth from 2020” strategy (CNG2020 strategy). The total CO2 emission reduction is investigated for 28 airlines during 2021–2023 under CNG2020 strategy based on the predicted data by BP neural network.
Qiang Cui
exaly +2 more sources
Transportation Research, Part D: Transport and Environment, 2023
Young-Tae Chang
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Young-Tae Chang
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Free Disposal Hull Condition to Verify When Efficiency Coincides with Weak Efficiency
Journal of Optimization Theory and Applications, 2021The paper gives a condition to verify when efficiency coincides with weak efficiency when the free disposal hull of the set is convex and presents four classes of optimization problems where this characterization holds. The main theorem the authors give is applied to the least absolute shrinkage and selection operator (LASSO) showing that for a multi ...
Naoki Hamada, Shunsuke Ichiki
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Modeling and notation of DEA with strong and weak disposable outputs
Health Care Management Science, 2011Recent articles published in Health Care Management Science have described DEA applications under the assumption of strong and weak disposable outputs. As we confidently assume that these papers include some methodical deficiencies, we aim to illustrate a revised approach.
Ludwig, Kuntz, Sandra, Sülz
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Weak Disposability of Input and Output in a Nonparametric Production Analysis
2021In some production processes, unlike traditional data envelopment analysis (DEA), decision making units (DMUs) consume widely used inputs since increasing them is more favorable for improving the efficiency. Plastic wastes and rotten fruits are two instances of widely used inputs for recycling factories. In this paper, weak disposability of inputs will
Kordrostami, Sohrab +4 more
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SHADOW PRICE OF ENVIRONMENTAL BADS: WEAK VS. STRONG DISPOSABILITY
1999This paper addresses the issue of the shadow price of environmental bads treated as an undesirable output (normal input) with weak (strong) disposability in a two-stage estimation. Nebraska agriculture sector time series data used is spread over 1936-94. Results indicate the difference in the price due to the disposability property.
Shaik, Saleem, Helmers, Glenn A.
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Research on the Disposal for Fly Ash Weak Foundation by Spraying Powder Pile
Applied Mechanics and Materials, 2011This paper studies the technical application of the disposal for FA(fly ash) weak foundation of these abandoned fly ash pool by the construction technology of spraying powder pile, so that, not only these abandoned fly ash pool will be used effectively as soon as possible, but also the surrounding environmental pollution will be improved well.
Jian Wei Zhang +2 more
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Journal of Agricultural Economics, 1998
The nonparametric approach Data Envelopment Analysis is used in order to measure individual technical inefficiency. Different models are evaluated using a 1991 FADN data set of French pig farms. Organic nitrogen is considered as a byproduct of animal breeding. Used as plant nutrient, organic manure becomes an input in crop production which is pollutant
Piot-Lepetit, Isabelle +1 more
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The nonparametric approach Data Envelopment Analysis is used in order to measure individual technical inefficiency. Different models are evaluated using a 1991 FADN data set of French pig farms. Organic nitrogen is considered as a byproduct of animal breeding. Used as plant nutrient, organic manure becomes an input in crop production which is pollutant
Piot-Lepetit, Isabelle +1 more
openaire +2 more sources