【作者】 周月平； 陈玲； 何大韧；

【Author】 Yueping Zhou, Ling Chen, Daren He (College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China)

【机构】 扬州大学物理科学与技术学院；

【摘要】 我们实际调研了04和05年中国百强电子企业销售,建议把企业看成顶点,生产同一种产品的企业之间连边,表示它们之间的竞争关系。这样,所有生产同种产品的企业都相互连边,构成一个完全图项目。整个销售系统被一个完全图集合的网络描述。我们统计了该网络的顶点项目度分布、项目大小分布、项目度与该顶点的销售额之间的关系、以及销售额的累计分布。在统计的基础上,我们建议了一个网络演化模型,假定每个企业的实力与该企业的项目度成正比例,同时假定每个企业都可能大幅度地改变一部分竞争力,从而可能后来居上。模型的数值模拟结果与实际统计得到的销售额的分布定性一致。更多还原

【Abstract】 We have done the empirical investigation on the vendition of the top 100 Chinese electronic enterprises in 2004 and in 2005. We suggest that vertices represent enterprises and if two enterprises produce a common product, an edge is connected between them representing the competition relationship between them. Thus, all the enterprises producing a common product connect each other and form a complete act graph. The whole vendition system is described by a network composed of complete graphs. The act-degree distribution, act size distribution, the relationship between act degree and the saleroom, and the cumulative distribution of the saleroom are all studied. Based on the statistic studies, we suggested a model to illuminate the system evolution. We suppose that the competition ability of an enterprise is proportional to its act-degree, and that every enterprise may greatly improve a part of its competition ability so as to surpass the formers. The simulation result of the model shows a qualitative agreement with the empirical results about the distribution of the saleroom.更多还原