Hierarchy in social organization
AbstractWe find that area and population distributions of nations follow an inverse power-law, as is known for cities, but with a different exponent. To interpret this result, we develop a growth model based on the geometrical properties of partitioning of the plane. The substantial agreement between the model and the actual nation distributions motivates the hypothesis that the distribution of aggregates of organisms is related to land partitioning. To test this hypothesis we follow the development of bacterial colonies of Escherichia coli, which, compared to humans, are on a completely different level of complexity. We find that the distributions of E. coli colonies follow an inverse power law with exponent similar to that of nations.
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Bibliographic InfoArticle provided by Elsevier in its journal Physica A: Statistical Mechanics and its Applications.
Volume (Year): 330 (2003)
Issue (Month): 3 ()
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Web page: http://www.journals.elsevier.com/physica-a-statistical-mechpplications/
Complex systems; Bacterial colonies; Urban aggregates; Social organization; Multiplicative process;
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- S. V. Buldyrev & F. Pammolli & M. Riccaboni & K. Yamasaki & D. Fu & K. Matia & H. E. Stanley, 2006.
"A Generalized Preferential Attachment Model for Business Firms Growth Rates: II. Mathematical Treatment,"
- Buldyrev, Sergey V. & Pammolli, Fabio & Riccaboni, Massimo & Yamasaki, Kazuko & Fu, Dongfeng & Matia, Kaushik & Stanley, H. Eugene, 2006. "A Generalized Preferential Attachment Model for Business Firms Growth Rates: II. Mathematical Treatment," MPRA Paper 15980, University Library of Munich, Germany.
- Yamasaki, Kazuko & Matia, Kaushik & Buldyrev, Sergey V. & Fu, Dongfeng & Pammolli, Fabio & Riccaboni, Massimo & Stanley, H. Eugene, 2004. "Preferential attachment and growth dynamics in complex systems," MPRA Paper 15908, University Library of Munich, Germany, revised 06 Feb 2006.
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