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近年来,在中国高技术产业内,企业规模结构经历着从集中化到两极化的悄然变化。为了解析企业规模结构的演化动因,本文构建动态面板Sys_GMM模型,对1995—2002年和2003—2010年的两组平衡面板数据进行分别回归和比较分析。研究证实了效率竞赛论、政府偏好论、分工深化论、市场容量论、两化融合论的理论解释力,但进入壁垒论和外资导入论未能得到实证支持。
In recent years, in China’s high-tech industries, the size structure of enterprises has undergone a quiet change from centralization to polarization. In order to analyze the evolutionary motivation of firm size structure, this paper constructs the Sys_GMM model of dynamic panel, and regulates and compares the two panel data in 1995-2002 and 2003-2010 respectively. The research confirms the efficiency contest theory, government preference theory, division of labor deepening theory, market capacity theory and theory of two-fusion theory, but the barriers to entry and FDI theory have not been empirically supported.