论技术创新驱动经济发展效率决定的国家经济状态

从技术创新与进步促进投资效率的角度，建立一个经济增长与技术进步相互促进的微分方程组模型，求解后可以得到持续经济增长以及低、中、高收入陷阱的产生条件。结果表明：对于研发效率、研发投入占国民收入的比重以及研发成果驱动经济效率较高的国家，其经济更容易实现持续增长；而对于无法满足持续增长条件的国家，其国民收入存在理论的最大值，这意味着其经济发展最终将会陷入停滞并陷入对应的经济增长陷阱。

The National Economic State Determined by the Efficiency of Technological Innovation-driven Economic Growth

Based on the idea that technological progress can promote the efficiency of investment, this paper sets up a model of simultaneous differential equations where economic growth and technological progress promotes each other, which enables us to deduce the creation condition of the sustained economic growth and the low-/middle-/high-income traps. The theoretical results show that: countries with high R&D efficiency, high R&D spending to GDP ratio and high efficiency of R&D results-driven economic growth are more likely to maintain sustained growth. For those countries which fail to satisfy the sustained growth condition, there are theoretical ceilings on their national output, which means that they will one day cease to develop and fall into the corresponding growth trap according to their national output level.