It is shown that R&D activity has high concentricity in distribution.This paper deals with the measure of the concentricity.Some measuring indicators and method have been presented, which are very usefull in calcu...It is shown that R&D activity has high concentricity in distribution.This paper deals with the measure of the concentricity.Some measuring indicators and method have been presented, which are very usefull in calculating Lorenz curve, GINI index and other measuring indicators according to the logarithm mean square of distribution of S&T activity σ=D ln ξ. Finally,some examples are used to illustrate the applications and the validity of new method of the paper.It is shown that science and technology indicators reflecting system scale obey the lognormal distribution so that the results of this paper have practical values.展开更多
文摘It is shown that R&D activity has high concentricity in distribution.This paper deals with the measure of the concentricity.Some measuring indicators and method have been presented, which are very usefull in calculating Lorenz curve, GINI index and other measuring indicators according to the logarithm mean square of distribution of S&T activity σ=D ln ξ. Finally,some examples are used to illustrate the applications and the validity of new method of the paper.It is shown that science and technology indicators reflecting system scale obey the lognormal distribution so that the results of this paper have practical values.
基金美国国家科学基金项目"China’s Technology Transformation:Diffusion and Intensification of R&D Effort in China’s Firms and Research Institutes"(0519902)教育部人文社科青年基金项目"国际性无形技术外溢与中国技术进步的作用机理研究"(12YJC630075)的资助