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While the issue of civil aviation safety has attracted serious public concern, notably few studies have investigated civil aviation safety efficiency. In this paper, a definition of civil aviation safety efficiency is proposed for the first time. Inputs to the proposed civil aviation safety efficiency model are labor, capital, fund and technology. The outputs are the percent of the passenger turnover...
Energy shortage is exacerbated by energy wastage and low efficiency, so energy efficiency has become a popular research topic. However, in most studies, the inputs and outputs of energy efficiency are selected through qualitative analysis and literature review, the rationality is not convincing. In this paper, the inputs and outputs of energy efficiency are calculated by EVA (Economic Value Added...
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