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借助社交媒体战略沟通(SMISC)思想,研究微博和微信应急信息的关键词网络结构特征,探究和比较网络结构特征对微博和微信应急信息传播的影响。以2015年重大突发事件“8·12天津港特重大安全爆炸事故”为研究对象,运用社会网络分析方法,利用Ucinet软件生成微博和微信应急信息关键词的拓扑图,通过统计得到邻接矩阵并测量网络密度、中心性、距离、核心—边缘和小团体。结果表明:微博网络比微信网络密度小、中心度低、节点距离差异小、核心度高、小团体结构模糊;关键词“天津爆炸事故”和“爆炸现场”在微博和微信两个网络中均处于核心地位。运用实证方法分析、测量和比较微博和微信应急信息的关键词网络结构,拓展SMISC在突发事件应急管理中的应用。
With the help of SMISC, this paper studies the key words network structure characteristics of Weibo and WeChat emergency information, and explores the impact of network structure characteristics on the dissemination of Weibo and WeChat emergency information. Taking the 2015 major accident “8 · 12 Tianjin Port Special Security Bombing” as the research object, using the social network analysis method, Ucinet software was used to generate the topological maps of the key words of Weibo and WeChat emergency information. Through statistical analysis, Adjacency matrix and measure network density, center, distance, core - edge and small groups. The results show that the Weibo network is less dense than WeChat network, the center is low, the difference of node distance is small, the core degree is high and the structure of small groups is fuzzy. Keywords “Tianjin explosion” and “explosion site” WeChat two networks are at the core. Empirical methods are used to analyze, measure and compare the key words network structure of Weibo and WeChat emergency information, and expand the application of SMISC in emergency management.