On R&D Competition and the Limitation of the Industrial Organaizational Framework

1.基于传统产业组织框架对日本产业进行的实证分析：对日本制造业集中度与盈利能力之间的关系进行了实证分析(1980-1988)。我的结论是，在1980-1988年期间，集中度和盈利能力之间的统计上显著的正向关系无法得到证实。这一结果表明，使用集中度因素来有效地解释盈利能力，在20世纪80年代有所下降。我对熊彼特关于日本工业的假说(1990,531家公司)进行了实证分析。我的结论如下：(1)对所有行业进行回归分析的结果是弹性α_1大于1的估计。(2)分行业(15个行业)，估计各行业的α_1具有统计学意义，13个行业的α_1大于1。这一结果似乎支持熊彼特的假设。为了获得更多关于这些主题的信息和更大的确定性，对其他相关研发指标(例如专利数量、研究人员数量等)进行进一步的实证分析是必不可少的。

1. This is an empirical analysis of Japanese industries based on the framework of the traditional Industrial Organization : I have done an empirical analysis of the relationship between concentration and profitability within Japanese manufacturing industries (1980-1988). I have concluded that a statistically significant and positive relationship between concentration and profitability can not be confirmed for the 1980-1988 period. This result shows that the use of the factor of concentration effectively to explain profitability, declines in the 1980s.2. I have done an empirical analysis of the Schumpeterian hypothesis about Japanese industries (1990,531 firms). My conclusion are as follows : (1) The result of a regression analysis of all industries is the estimate that elasticity alpha_1 is greater than unity. (2) Industry by industry (fifteen industries), the result is the estimate that every alpha_1 was statistically significant and in the case of thirteen industries, alpha_1 was greater than unity. This result appears to support the Schumpeterian hypothesis.3. To obtain more information and greater certainty regarding these subjects, further empirical analysis of other relevant R&D indicators (e.g.numbers of patents, number of researchers, et.al.), is essential.