研发的双重效应和技术创新: 基于自动机模型的演化分析

新增长理论和实证研究表明,企业内部研发具有双重性它不仅直接促进了技术进步,同时也增强了对扩散技术的吸收和学习.基于研发的双重效应,建立一个技术创新扩散的随机元胞自动机模型,应用于技术创新扩散的复杂性研究.仿真实验结果表明,内部研发和网络外部性对技术创新率的作用表现为"S"型曲线的特征.企业内部研发的提高可以加速技术创新,缩短经济起飞的时间,并且增强了均衡状态下经济系统创新的稳定性.

Dual Role of R & D and Technology Innovation: Evolutionary Analysis Based on Cellular Automata Model

New growth theory and empirical study have shown that in-house R & D has the dual role.It not only generates new information,but also enhances the firm's ability to assimilate and exploit the technology spillovers.Based on two faces of R & D,we put forward a cellular automata model to investigate the complexity of the innovation diffusion of economic system in the long run.The simulation results show that the roles of in-house R & D and network extemality on the average rate of innovators in the economic system own the characteristics of the 'S' curve. Increasing the level of in-house research may shorten the take-off phase of the economy and improve the stability of the long run level of innovation rate.