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Traffic and Granular Flow ’99: Social, Traffic, and Granular by W. Weidlich (auth.), Dirk Helbing, Hans J. Herrmann, Michael

By W. Weidlich (auth.), Dirk Helbing, Hans J. Herrmann, Michael Schreckenberg, Dietrich E. Wolf (eds.)

"Are there universal phenomena and legislation within the dynamic habit of granular fabrics, site visitors, and socio-economic systems?" The solutions given on the foreign workshop "Traffic and Granular circulate '99" are awarded during this quantity. From a actual point of view, these kinds of platforms may be handled as (self)-driven many-particle structures with powerful fluctuations, exhibiting multistability, part transitions, non-linear waves, and so on. the good curiosity in those structures is because of numerous unforeseen new discoveries and their functional relevance for fixing a few basic difficulties of contemporary societies. This contains clever measures for site visitors move optimization and techniques from "econophysics" for stabilizing (stock) markets.

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Extra resources for Traffic and Granular Flow ’99: Social, Traffic, and Granular Dynamics

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First, they test the eigenvalue statistics of the cross-correlation matrix for universal properties of real symmetric random matrices such as the Wigner surmise for the eigenvalue spacing distribution and eigenvalue correlations. Remarkably, they find that eigenvalue statistics of the correlation matrix agree well with the universal predictions of random matrix theory for real symmetric random matrices, in contrast to our naive expectations for a strongly interacting system. Deviations from RMT predictions represent genuine correlations.

Recently, similar statistical properties were found for the GDP of countries [51] and for university research fundings [52]. Hence, it is not impossible to imagine that there are some very general principles of complex organizations at work here, because similar empirical laws appear to hold for data on a range of systems that at first sight might not seem to be so closely related. Buldyrev et al. models this firm structure as an approximate Cayley tree, in which each subunit of a firm reacts to its directives from above with a certain probability distribution [55].

This migratory process describes in oversimplified manner the rather unpleasant process observed in several multi-cultural metro-poles all over the world: the sequential erosion of districts by asymmetric evasion-invasion interaction of populations of different cultural, ethnic or economic background. Model 2) Group Dynamics: Special Case: Political Parties with Reciprocal Undermining Activity The model describes the rise and fall of interacting social groups in terms of the number of their members and further variables such as the internal degree of solidarity.

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