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Certain systems with slow driving and avalanche-like dissipation events are naturally close to a critical point when the ratio of two energy scales is large. The first energy scale is the threshold above which an avalanche is triggered, the second scale is the threshold above which a site is...
Persistent link: https://www.econbiz.de/10010587280
An analysis of master–slave hierarchy has been made in a system of nonlinear stochastic equations describing fluctuations with a 1/f spectrum at coupled nonequilibrium phase transitions. It is shown that for a system of stochastic equations there exist different probability distribution...
Persistent link: https://www.econbiz.de/10010588539
As a killing machine and a decisive factor of history, wars play an important role in social system. In this paper, we present an empirical exploration of the distribution of recurrent time of wars in ancient China and find that it obeys a stretched exponential form. The pattern we found implies...
Persistent link: https://www.econbiz.de/10010588598
We use Monte Carlo simulation to study new features of a mass-aggregation model which undergoes a dynamical phase transition. The model is characterized by an aggregate phase where the mass distribution decays as a power law, in addition to the delta function peak at infinite mass. The...
Persistent link: https://www.econbiz.de/10010588711
We propose a model for porous sandstone formation from unconsolidated sand based on a series of restructuring events where the local pressure difference due to flow in the sand is the largest. We investigate the local and global permeability distributions after steady state has been reached....
Persistent link: https://www.econbiz.de/10010588733
A society is a medium with a complex structure of one-to-one relations between people. Those could be relations between friends, wife–husband relationships, relations between business partners, and so on. At a certain level of analysis, a society can be regarded as a gigantic maze constituted...
Persistent link: https://www.econbiz.de/10010588899
We revisit the question whether the critical behavior of sandpile models with sticky grains is in the directed percolation universality class. Our earlier theoretical arguments in favor, supported by evidence from numerical simulations [P.K. Mohanty, D. Dhar, Phys. Rev. Lett. 89 (2002) 104303],...
Persistent link: https://www.econbiz.de/10010589108
In this paper we introduce two new dynamical features of rainfall phenomena into the self-organized critical rainfall model. The new dynamics lead to the constrained random and the complete toppling versions, both of which lose the abelian character of the original model. The constrained random...
Persistent link: https://www.econbiz.de/10010589202