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本文构建了公共支出激励自主创新的理论模型并进行了实证分析。理论模型表明,公共支出是激励自主创新的有效途径,存在一个激励自主创新的公共支出最优规模。实证分析表明,我国政府支出显著地激励了自主创新行为,但是,我国自主创新行为主要是由自身冲动所致,政府公共支出激励贡献度始终不超过20%;政府支出激励效应越来越大,但是起伏不定;激励我国自主创新的政府支出最优规模是:政府R&D经费支出占GDP的0.621%,现实规模不足最优规模的一半,但是,现实规模向最优规模趋近。我们的政策建议是:大力增加财政投入,提高财政资金使用效率,以有效地激励国家自主创新。
This paper constructs the theoretical model of public expenditure to stimulate independent innovation and conducts an empirical analysis. The theoretical model shows that public expenditure is an effective way to stimulate independent innovation, and there exists an optimal scale of public expenditure to encourage independent innovation. Empirical analysis shows that our government expenditure significantly stimulated the independent innovation behavior, however, our independent innovation behavior is mainly caused by its own impulses, the contribution of the government public expenditure incentive always does not exceed 20%; the government expenditure incentive effect is more and more big, But fluctuated; the optimal scale of government expenditure to encourage independent innovation in our country is that the government expenditure on R & D accounts for 0.621% of GDP and the actual scale is less than half of the optimal scale. However, the actual scale approaches the optimal scale. Our policy recommendations are: To greatly increase financial input, improve the efficiency of the use of financial resources, in order to effectively encourage national innovation.