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文章将SBM模型与三阶段DEA模型相结合,考虑外部环境因素和随机冲击对效率测量的影响,实证评估了2001-2008年30个OECD国家和中国的创新效率。研究结果显示,各国环境外生变量和随机冲击,包括人均GDP、产业结构、对外开放度和政府干预对创新SBM效率有显著影响。剔除环境因素和随机因素之后,各国平均创新SBM效率由0.563上升到0.646,提高了约14.74%,但在样本期内没有明显的逐年升高或者逐年下降的趋势。从区域来看,调整后日、韩创新SBM效率最高,北美洲次之,欧洲最低。从年度波动情况来看,各国创新SBM效率的差距有不断缩小的趋势。
The article combines the SBM model with the three-stage DEA model to consider the impact of external environmental factors and random impact on efficiency measurement, and empirically evaluates the innovation efficiency of 30 OECD countries and China from 2001 to 2008. The results show that the environmental variables and random shocks in various countries, including per capita GDP, industrial structure, opening up and government intervention have a significant impact on the efficiency of innovative SBM. Excluding the environmental factors and stochastic factors, the mean innovation SBM efficiency of all countries increased from 0.563 to 0.646, an increase of 14.74%. However, there was no obvious trend of increasing year by year or decreasing year by year in the sample period. From the regional point of view, the adjusted day, South Korea’s highest efficiency SBM innovation, followed by North America, Europe, the lowest. From the perspective of annual fluctuations, the gap in innovation SBM efficiency across countries has been declining.