Physics – Physics and Society
Scientific paper
2006-06-09
Physics
Physics and Society
8 pages, 14 figures
Scientific paper
10.1016/j.physa.2006.11.011
Using the requisition papers of Chinese Nature Science Basic Research in management and information department, we construct the weighted network of research areas({\bf WRAN}) represented by the subject codes. In WRAN, two research areas are considered connected if they have been filled in at least one requisition paper. The edge weight is defined as the number of requisition papers which have filled in the same pairs of codes. The node strength is defined as the number of requisition papers which have filled in this code, including the papers which have filled in it only. Here we study a variety of nonlocal statistics for these networks, such as typical distances between research areas through the network, and measures of centrality such as betweenness. These statistics characteristics can illuminate the global development trend of Chinese scientific study, it is also helpful to adjust the code system to reflect the real status more accurately. Finally, we present a plausible model for the formation and structure of networks with the observed properties.
Dang Yan-Zhong
Guo Qiang
Liu Jian-Guo
Wang Zhong-Tuo
Xuan Zhao-Guo
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