中文摘要：

基于微观企业间关系的层面，研究都市圈要素整合过程中如何判定核心企业及其在网络链接过程中所起到的作用。认为核心企业是处于都市圈要素流动网络关键位置的节点核，并运用节点的强度、强度分布以及相互关系、加权的聚类系数等参数体系来对节点核进行判别，这种判别方法考虑了节点的绝对权重和相关权重。最后，以徐州都市圈内典型产业的发展为例，总结了区域内节点核产生的4种途径，分析了节点核促进产业衍生、控制价值链、产生知识溢出、提高产业竞争力的中介作用。

英文摘要：

This paper focuses on the criterions to determine the core nodes and its role in the factors linkage process in the city coordinating region based on the connection among enterprises. In this paper, the core enterprises are taken as the core nodes, and a parameter system is given containing the node strength, strength distributions , correlations,weighted shortest paths, weighted clustering coefficient and motifs, taking into account the nodes power in utterly as well as in relatively. After four kinds of methods to produce nodes core in Xuzhou summed up, this paper analyses the linkage mechanism from the industry derivative, value chain control, knowledge overflow, industry competition and the agency role in inter-regional factors flow linkage.