中国双向直接投资与企业创新的耦合研究——基于省级层面数据的实证分析

借鉴物理学中的耦合度函数，提出双向直接投资与企业创新的耦合协调度模型及其指标体系，而后利用中国28个省域2004—2013年的相关数据，分别计算出各省域双向直接投资与企业创新耦合协调系统的耦合度、耦合协调度，以及双向直接投资子系统与企业创新子系统的发展水平，通过比较两个子系统的发展水平将各省域分为同步型、双向直接投资驱动型与企业创新驱动型。同时，分析中国省域双向直接投资与企业创新耦合协调系统的耦合度时序变化趋势。然后，对其耦合协调度进行聚类分析，划分为协调、磨合、阻抑三个阶段。研究发现：从国家层面看，整体耦合度不高，但呈现缓慢增长趋势；从省域层面看，存在明显地区差异且各地区耦合协调阶段不同。

the Coupling Research on Two-way Direct Investment and Enterprise's Innovation:Based on Provinces' Data of China

This paper established the coupling coordination model about two-way direct investment and enterprise's innovation which was based on the physics coupling function. According to the data of28 provinces from 2004 to 2013, this paper got both degrees of coupling and coordination. While calculating the level of regional two-way direct investment and enterprise innovation, the paper analyzed the trend of time changes. The development process could be induced into three stages:harmony, promotion and confliction, through the clustering analysis of the coupling coordination degree. Then the paper finds out the coupling coordination developmental level of these regions are low but increasing. There exist significant regional differences.