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三、计算煤炭工业科技成果经济效益数学模型的建立1.采用“年均净增收节支额”和“年均科技投资收益率”两个指标作为评价煤炭工业科技成果经济效益(限于以价值形式表示经济效益的科技成果)的主要指标,计算这两个指标时均以科技成果的“净增收节支总额”指标为基础。2.科技成果的“净增收节支总额”指标的计算式为
Third, calculate the scientific and technological achievements of coal industry, the establishment of a mathematical model of economic efficiency 1. Adopt the “average annual net income and expenditure” and “average annual investment rate of return on technology” two indicators as the evaluation of economic benefits of scientific and technological achievements in the coal industry (limited to value Economic and technological achievements), the calculation of these two indicators are based on the scientific and technological achievements of the “net income and expenditure savings” target as the basis. 2. Scientific and technological achievements of the “net income and expenditure savings” indicator formula