Results 21 to 30 of about 1,278 (116)
Self-Organized Criticality on Quasiperiodic Graphs
, 1999 Self-organized critical models are used to describe the 1/f-spectra of rather different physical situations like snow avalanches, noise of electric currents, luminosities of stars or topologies of landscapes.
Joseph, Dieter
core +4 more sources
Bacterial evolution and the Bak-Sneppen model [PDF]
, 2001 Recently, Lenski et al \cite{Elena,Lenski,Travisano} have carried out several experiments on bacterial evolution. Their findings support the theory of punctuated equilibrium in biological evolution. They have further quantified the relative contributions
Bose, Indrani, Chaudhuri, Indranath
core +3 more sources
Self-organizing social hierarchies in a timid society
, 2005 Emergence of hierarchies is investigated by Monte Carlo simulation in a timid society where all individuals are pacifist. The self-organiztion of hierarchies is shown to occur in two steps as the population is increased, i.e.
Bonabeau +4 more
core +2 more sources
, 2004 The Bak-Tang-Wiesenfeld sandpile model provdes a simple and elegant system with which to demonstate self-organized criticality. This model has rather remarkable mathematical properties first elucidated by Dhar.
Bak +8 more
core +1 more source
Multiscale SOC in turbulent convection
, 2004 Using data obtained in a laboratory thermal convection experiment at high Rayleigh numbers, it is shown that the multiscaling properties of the observed mean wind reversals are quantitatively consistent with analogous multiscaling properties of the Bak ...
Bershadskii, A. +2 more
core +2 more sources
Wealth redistribution with finite resources
, 2001 We present a simplified model for the exploitation of finite resources by interacting agents, where each agent receives a random fraction of the available resources.
Bak +20 more
core +1 more source
Aging in coherent noise models and natural time
, 2004 Event correlation between aftershocks in the coherent noise model is studied by making use of natural time, which has recently been introduced in complex time-series analysis.
B. Gutenberg +5 more
core +1 more source
A model for the size distribution of customer groups and businesses [PDF]
, 2002 We present a generalization of the dynamical model of information transmission and herd behavior proposed by Eguiluz and Zimmermann. A characteristic size of group of agents s0 is introduced.
Amaral +16 more
core +3 more sources
, 2006 Different models to study the wealth distribution in an artificial society have considered a transactional dynamics as the driving force. Those models include a risk aversion factor, but also a finite probability of favoring the poorer agent in a ...
Aoyama +12 more
core +1 more source
Physics of Fashion Fluctuations
, 2000 We consider a market where many agents trade many different types of products with each other. We model development of collective modes in this market, and quantify these by fluctuations that scale with time with a Hurst exponent of about 0.7.
A. Hansen +15 more
core +1 more source