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Structural and robustness properties of smart-city transportation networks

Chinese Physics B 2015年第9期24卷 1-4页

作者：张振刚丁卓樊京芳孟君丁益民叶方富陈晓松 School of Business Administration South China University of Technology Institute of Theoretical Physics Chinese Academy of Sciences Institute of Physics Chinese Academy of Sciences Faculty of Physics and Electronics Hubei University

The concept of smart city gives an excellent resolution to construct and develop modern cities, and also demands infrastructure construction. How to build a safe, stable, and highly efficient public transportation system becomes an important topic in the process of city construction. In this work, we study the structural and robustness properties of transportation networks and their sub-networks. We introduce a complementary network model to study the relevance and complementarity between bus network and subway network. Our numerical results show that the mutual supplement of networks can improve the network robustness. This conclusion provides a theoretical basis for the construction of public traffic networks, and it also supports reasonable operation of managing smart cities.

关键词： percolation phase transition finite size scaling theory network smart city

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Research on percolation model and criticality of seismicity

引用

Acta Seismologica Sinica(English Edition) 1999年第4期12卷 419-427,494页

作者：柯善明顾浩鼎翟文杰 Seismological Bureau of Liaoning Province Shenyang 110031 China

Making use of modern nonlinear physics theory and earthquake focus theory, combined with seismicity characteristics, the percolation model of earthquake activity is given in this paper. We take the seismogenic process of alarge earthquake as a phase transition process of percolation and apply the renormalization method to phase transition of percolation. The critical property of the system, which is like percolation probability exponential andcorrelative length exponential, etc, can be calculated under the fixed point as which in the renormalization transformation infinite correlative length in percolation phase transition is taken. The percolation phase transition process of two large earthquakes, which are Haicheng and Tangshan event occurred in 1975 and 1976 respectively, hasbeen discussed by means of seismicity data before and after two shocks.

关键词： percolation model seismicity percolation phase transition renormalization method critical cxponential

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