Zobrazeno 1 - 10
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pro vyhledávání: '"Ehrhardt, George"'
Autor:
Ehrhardt, George Christofer.
Thesis (Ph. D.)--Indiana University, 2002.
Vita. Includes bibliographical references (leaves 304-314).
Vita. Includes bibliographical references (leaves 304-314).
Externí odkaz:
http://catalog.hathitrust.org/api/volumes/oclc/54763501.html
We study a general set of models of social network evolution and dynamics. The models consist of both a dynamics on the network and evolution of the network. Links are formed preferentially between 'similar' nodes, where the similarity is defined by
Externí odkaz:
http://arxiv.org/abs/physics/0604036
We review recent results on the dynamics of social networks which suggest that the interplay between the network formation process and volatility may lead to the occurrence of discontinuous phase transitions and phase coexistence in a large class of
Externí odkaz:
http://arxiv.org/abs/physics/0505019
We introduce and study a general model of social network formation and evolution based on the concept of preferential link formation between similar nodes and increased similarity between connected nodes. The model is studied numerically and analytic
Externí odkaz:
http://arxiv.org/abs/physics/0504124
Publikováno v:
Phys Rev E 71 041301 (2005)
A simple phenomenological model of a binary granular mixture is developed and investigated numerically. We attempt to model the experimental system of [1,2] where a horizontally vibrated binary monolayer was found to exhibit a transition from a mixed
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403273
Autor:
Ehrhardt, George
Publikováno v:
Asian Survey, 2009 Jul . 49(4), 625-646.
Externí odkaz:
https://www.jstor.org/stable/10.1525/as.2009.49.4.625
Publikováno v:
Phys. Rev. E 69, 016106 (2004)
We consider the persistence probability, the occupation-time distribution and the distribution of the number of zero crossings for discrete or (equivalently) discretely sampled Gaussian Stationary Processes (GSPs) of zero mean. We first consider the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306101
Publikováno v:
Phys. Rev. E 65, 041102 (2002)
We consider the problem of `discrete-time persistence', which deals with the zero-crossings of a continuous stochastic process, X(T), measured at discrete times, T = n(\Delta T). For a Gaussian Stationary Process the persistence (no crossing) probabi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0112132
Publikováno v:
Phys. Rev. Lett. 88, 070601 (2002)
We consider an arbitrary Gaussian Stationary Process X(T) with known correlator C(T), sampled at discrete times T_n = n \Delta T. The probability that (n+1) consecutive values of X have the same sign decays as P_n \sim \exp(-\theta_D T_n). We calcula
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109526
Publikováno v:
Phys. Rev. E 64, 015101(R) (2001)
We introduce the concept of `discrete-time persistence', which deals with zero-crossings of a continuous stochastic process, X(T), measured at discrete times, T = n \Delta T. For a Gaussian Markov process with relaxation rate \mu, we show that the pe
Externí odkaz:
http://arxiv.org/abs/cond-mat/0011290