For the gray attributes of the equipment program and its difficulty to carry out the quantitative assessment of the equipment program information, the gray relation projection method is simply reviewed. Combining the ...For the gray attributes of the equipment program and its difficulty to carry out the quantitative assessment of the equipment program information, the gray relation projection method is simply reviewed. Combining the super-data envelopment analysis（DEA） model and the gray system theory, a new super-DEA for measuring the weight is proposed, and a gray relation projection model is established to rank the equipment programs. Finally, this approach is used to evaluate the equipment program. The results are verified valid and can provide a new way for evaluating the equipment program.展开更多
Carbon emission accounting is an important basis for global climate governance.Based on the consumption-based accounting(CBA)method,the characteristics of carbon flow between national,regional,and product processes co...Carbon emission accounting is an important basis for global climate governance.Based on the consumption-based accounting(CBA)method,the characteristics of carbon flow between national,regional,and product processes could be more clearly reflected.Therefore,CBA is more conducive to clarifying the attribution of responsibilities between producers and consumers,with the principles of fairness and justice.By accounting for carbon emissions in typical countries from 1990 to 2019,we found that the CBA emissions are higher than the production-based accounting(PBA)emissions in major developed countries,while the results are reversed for developing countries.In the past 30 years,the CBA emissions in targeted developed countries generally have shown a downward trend,while in developing countries,they have shown an upward trend.CBA emissions in China have shown a continuous growth trend from 1990 to 2019,but the pace has slowed down significantly over the last decade.Meanwhile,the embodied carbon intensity of China’s exports continues to decline,indicating that China is providing more green and low-carbon products to the world.Taking the PV industry as an example,this study further reveals the contribution of specific product industries to the country’s carbon transfer through product carbon footprint analysis.In order to provide a scientific basis for global mitigation and climate governance,it is urgent to innovate a scientific,practical,and standardized CBA technology system.展开更多
基金supported by the National Natural Science Foundation of China(7107307971222106+2 种基金70901069)the Research Foundation of the National Excellent Doctoral Dissertation of Chinathe Research Fund for the Doctoral Program of Higher Education(20133402110028)
文摘For the gray attributes of the equipment program and its difficulty to carry out the quantitative assessment of the equipment program information, the gray relation projection method is simply reviewed. Combining the super-data envelopment analysis（DEA） model and the gray system theory, a new super-DEA for measuring the weight is proposed, and a gray relation projection model is established to rank the equipment programs. Finally, this approach is used to evaluate the equipment program. The results are verified valid and can provide a new way for evaluating the equipment program.
基金supported by Science and Technology Innovation Plan of Shanghai Science and Technology Commission(23DZ1201804)。
文摘Carbon emission accounting is an important basis for global climate governance.Based on the consumption-based accounting(CBA)method,the characteristics of carbon flow between national,regional,and product processes could be more clearly reflected.Therefore,CBA is more conducive to clarifying the attribution of responsibilities between producers and consumers,with the principles of fairness and justice.By accounting for carbon emissions in typical countries from 1990 to 2019,we found that the CBA emissions are higher than the production-based accounting(PBA)emissions in major developed countries,while the results are reversed for developing countries.In the past 30 years,the CBA emissions in targeted developed countries generally have shown a downward trend,while in developing countries,they have shown an upward trend.CBA emissions in China have shown a continuous growth trend from 1990 to 2019,but the pace has slowed down significantly over the last decade.Meanwhile,the embodied carbon intensity of China’s exports continues to decline,indicating that China is providing more green and low-carbon products to the world.Taking the PV industry as an example,this study further reveals the contribution of specific product industries to the country’s carbon transfer through product carbon footprint analysis.In order to provide a scientific basis for global mitigation and climate governance,it is urgent to innovate a scientific,practical,and standardized CBA technology system.
