文献类型：期刊文献

英文题名：Statistical properties of world investment networks

作者：Song, Dong-Ming[1,2];Jiang, Zhi-Qiang[1,2,3];Zhou, Wei-Xing[1,2,3,4,5]

机构：[1]E China Univ Sci & Technol, Sch Business, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Sci, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Res Ctr Econophys, Shanghai 200237, Peoples R China;[4]E China Univ Sci & Technol, Engn Res Ctr Proc Syst Engn, Minist Educ, Shanghai 200237, Peoples R China;[5]Chinese Acad Sci, Res Ctr Fictitious Econ & Data Sci, Beijing 100080, Peoples R China

年份：2009

卷号：388

期号：12

起止页码：2450

外文期刊名：PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS

收录：;EI(收录号：20091512028543);WOS:【SSCI(收录号:WOS:000265885900022)，SCI-EXPANDED(收录号:WOS:000265885900022)】；

基金：We are grateful to Liang Guo for helpful discussions. This work was partly Supported by the National Natural Science Foundation of China (Grant No. 70501011), the Fok Ying Tong Education Foundation (Grant No. 10 1086), the Program for New Century Excellent Talents in University (Grant No. NCET-07-0288), and the Shanghai Dawn Light program.

语种：英文

外文关键词：Econophysics; Complex networks; World investment network; Probability distribution; Allometric scaling

摘要：We have performed a detailed investigation on the world investment networks constructed from the Coordinated Portfolio Investment Survey (CPIS) data of the International Monetary Fund, ranging from 2001 to 2006. The distributions of degrees and node strengths are scale-free. The weight distributions can be well modeled by the Weibull distribution. The maximum flow Spanning trees of the world investment networks possess two universal allometric scaling relations, independent of time and the investment type. The topological scaling exponent is 1.17 +/- 0.02 and the flow scaling exponent is 1.03 +/- 0.01. (c) 2009 Elsevier B.V. All rights reserved.