以Science Direct为数据来源,以镁合金产业国际合作为案例,运用社会网络分析方法,通过将合作数据分割为若干个"静态瞬间",获得2001到2010年间各年份镁合金产业国际合作网络图。对比合作网络的网络特征参数获得演化特征,2001—2010年间,国际合作网络呈现密集、不均匀的趋势,2004年以后,国际合作网络形成了核心-边缘结构,网络节点实质性增长,国际合作网络密集化,平均路径长度缩短;对优先连接机制和地理邻近性连接机制进行回归分析,基于国际合作的二分变量特征,运用Logit回归模型进行分析。结果表明,优先连接机制和地理临近性连接机制均作用于合作网络的形成,但是,优先连接机制的作用显著大于地理临近性机制,优先连接机制是核心-边缘结构形成的驱动力。
Taking Science Direct as data source,the paper applied social network method and complex network method to analyze the international cooperation network of Mg alloy technology innovation. International cooperation network topology can be attained by dividing the cooperation data into a couple of"static moment". The structure of dynamic character and evolution mechanism is studied. The international cooperation networks in the case study showed an intensive,uneven trend.And a core-periphery structure has been formed since 2004,the scale of network substantiality has increased,the network is denser,and average distance decreases. The mechanisms behind dynamic network are verified by using Logit regression model. The results indicated that priority connection mechanism is the driving force in the formation of the core-periphery structure.