Showing 121 - 130 of 142
Nonequilibrium phase transitions between an active and an absorbing state are found in models of populations, epidemics, autocatalysis, and chemical reactions on a surface. While absorbing-state phase transitions fall generically in the directed-percolation universality class, this does not...
Persistent link: https://www.econbiz.de/10010590751
This paper analyzes the spatial evolution character of multi-objective evolutionary algorithms using self-organized criticality theory. The spatial evolution character is modeled by the statistical property of crowding distance, which displays a scale-free feature and a power-law distribution....
Persistent link: https://www.econbiz.de/10010590812
We study the effect of size-based regulation on an economic system. A multiple-trait model of self-organized criticality is used to simulate the economic system. The major difference of this work from previous studies is that firm's fitness is not characterized by a single number but by M...
Persistent link: https://www.econbiz.de/10010590951
Evolution of species is a complex phenomenon. Some theoretical models take into account evolution of species, like the Bak–Sneppen model that obtain punctuated equilibrium from self-organized criticality and the Penna model for biological aging that consists in a bit-string model subjected to...
Persistent link: https://www.econbiz.de/10010590955
Self-organized criticality aspects of electrical treeing in solid dielectric under ac voltage are considered. The sandpile model of self-organized criticality is modified to describe partial discharge activity from electrical treeing. A comparison of avalanche statistics simulated by the...
Persistent link: https://www.econbiz.de/10010590995
Theoretical arguments and experimental evidences are presented showing that concepts and methods in science of complex systems, in particular those related to self-organized criticality, are very useful in describing and understanding a number of phenomena observed in inelastic high-energy...
Persistent link: https://www.econbiz.de/10010591028
We study the distributions of dissipative and nondissipative avalanches separately in the stochastic Zhang (SP-Z) sandpile in two dimension. We find that dissipative and nondissipative avalanches obey simple power laws and do not have the logarithmic correction, while the avalanche distributions...
Persistent link: https://www.econbiz.de/10010591716
We focus here on the scaling properties of small interspecies differences between red cone opsin transmembrane proteins, using a hydropathic elastic roughening tool previously applied to the rhodopsin rod transmembrane proteins. This tool is based on a non-Euclidean hydropathic metric...
Persistent link: https://www.econbiz.de/10010595172
A thorough outlook on the origin of life needs to delineate a chemically rigorous, self-consistent path from highly heterogeneous, random ensembles of relatively simple organic molecules, to an entity that has rudimentary life-like characteristics. Such entity should be endowed with a capacity...
Persistent link: https://www.econbiz.de/10010599499
The avalanche dynamics in the Bak–Sneppen mechanism of self-organized criticality (SOC) is discussed. Rigorous arguments reveal the emergent history dependence that dominates the intermittent activity. In numerical studies the emergent SOC state shows glassy features, such as aging and an...
Persistent link: https://www.econbiz.de/10010664861