Zare-Farashbandi Firoozeh, Geraei Ehsan, Siamaki Saba
Assistant Professor, Medical Librarianship and Information Science, Health Information Technology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
PhD Student, Department of Knowledge and Information Science, Shahid Chamran University, Ahwaz, Iran.
J Res Med Sci. 2014 Jan;19(1):41-6.
Co-authorship is one of the most tangible forms of research collaboration. A co-authorship network is a social network in which the authors through participation in one or more publication through an indirect path have linked to each other. The present research using the social network analysis studied co-authorship network of 681 articles published in Journal of Research in Medical Sciences (JRMS) during 2008-2012.
The study was carried out with the scientometrics approach and using co-authorship network analysis of authors. The topology of the co-authorship network of 681 published articles in JRMS between 2008 and 2012 was analyzed using macro-level metrics indicators of network analysis such as density, clustering coefficient, components and mean distance. In addition, in order to evaluate the performance of each authors and countries in the network, the micro-level indicators such as degree centrality, closeness centrality and betweenness centrality as well as productivity index were used. The UCINET and NetDraw softwares were used to draw and analyze the co-authorship network of the papers.
The assessment of the authors productivity in this journal showed that the first ranks were belonged to only five authors, respectively. Furthermore, analysis of the co-authorship of the authors in the network demonstrated that in the betweenness centrality index, three authors of them had the good position in the network. They can be considered as the network leaders able to control the flow of information in the network compared with the other members based on the shortest paths. On the other hand, the key role of the network according to the productivity and centrality indexes was belonged to Iran, Malaysia and United States of America.
Co-authorship network of JRMS has the characteristics of a small world network. In addition, the theory of 6° separation is valid in this network was also true.
共同作者身份是研究合作最具体的形式之一。共同作者网络是一种社会网络，其中作者通过间接途径参与一篇或多篇出版物而相互联系。本研究采用社会网络分析方法，研究了2008 - 2012年发表在《医学科学研究杂志》（JRMS）上的681篇文章的共同作者网络。
本研究采用科学计量学方法并对作者进行共同作者网络分析。使用网络分析的宏观指标，如密度、聚类系数、组件和平均距离，分析了2008年至2012年JRMS上发表的681篇文章的共同作者网络拓扑结构。此外，为了评估网络中每位作者和国家的表现，还使用了微观指标，如度中心性、接近中心性和中介中心性以及生产力指数。使用UCINET和NetDraw软件绘制和分析论文的共同作者网络。
对该期刊作者生产力的评估表明，排名前几位的分别仅为五位作者。此外，对网络中作者共同作者关系的分析表明，在中介中心性指数方面，其中三位作者在网络中处于良好位置。与其他成员相比，基于最短路径，他们可被视为能够控制网络中信息流的网络领导者。另一方面，根据生产力和中心性指数，该网络的关键作用属于伊朗、马来西亚和美国。
JRMS的共同作者网络具有小世界网络的特征。此外，六度分隔理论在该网络中也成立。
