Absorbing States
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Analysis of a car door subjected to side pole impact
Abstract The results of a study on the response of a side impact beam located in a car door to impact loading is presented. The side impact beam is situated in both the front and rear side doors of a vehicle between the inner and outer shells to minimise intrusion into the passenger compartment during a collision whilst absorbing as much impact energy as pos
Lat. Am. j. solids struct.. Publicado em: 30/09/2019
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2. Transições de fase para estados absorventes: um estudo em redes regulares e complexas / Phase transitions to absorbing states: a study on regular and complex networks
Transições de fase para estados absorventes, configurações das quais o sistema não pode escapar, são atualmente um tópico na fronteira da física estatística fora do equilíbrio. Concomitantemente com um crescente interesse em tais transições de fase em topologias complexas, ainda há muitos problemas em aberto sendo investigados em redes regulares
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2011
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3. Dinâmica de populações: modelo predador-presa estocástico e difusivo em um reticulado / Dynamic population: Predator-prey stochastic and difusive model on a lattice
We have studied the predator-prey stochastic model defined on a lattice with first neighbour interactions. Each site of the lattice may assume one of three states: vacant, occupied by prey and occupied by predator. We have introduced a parameter that controls the possibility of difusion among sites. The model shows an oscilating phase, a non-oscilating phase
Publicado em: 2009
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4. Generalized Manna sandpile model with height restrictions
Sandpile models with conserved number of particles (also called fixed energy sandpiles) may undergo phase transitions between active and absorbing states. We generalize the Manna sandpile model with fixed number of particles, introducing a parameter -1 < lambda < 1 related to the toppling of particles from active sites to its first neighbors. In particular,
Brazilian Journal of Physics. Publicado em: 2006-09
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5. One-dimensional lattice gas models with infinitely many absorbing states
We determined, by numerical simulations, the critical behavior one-dimensional systems with infinitely many absorbing states. These models are modified versions of the conserved lattice gas model in which two adjacent active particles instead of just one can jump to their neighboring sites. The models studied here are examples of systems with many absorbing
Brazilian Journal of Physics. Publicado em: 2006-03
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6. A general creation-annihilation model with absorbing states
A one dimensional non-equilibrium stochastic model is proposed where each site of the lattice is occupied by a particle, which may be of type A or B. The time evolution of the model occurs through three processes: autocatalytic generation of A and B particles and spontaneous conversion A -> B. The two-parameter phase diagram of the model is obtained in one-
Brazilian Journal of Physics. Publicado em: 2005-06
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7. Models with infinitely many absorbing states analitically soluble / Modelos com infinitos estados absorventes analiticamente solúveis
In this work we studied some models with particle conservation which present a phase transition between an active stationary state and infinitely many absorbing states. The active states of each model consist of equiprobable configurations, corresponding, according to Gibbs s formulation of Statistical Mechanics, to a microcanonical ensemble. Carrying out an
Publicado em: 2005
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8. Infinitely-many absorbing-state nonequilibrium phase transitions
We present a general field-theoretic strategy to analyze three connected families of continuous phase transitions which occur in nonequilibrium steady-states. We focus on transitions taking place between an active state and one absorbing state, when there exist an infinite number of such absorbing states. In such transitions the order parameter is coupled to
Brazilian Journal of Physics. Publicado em: 2003-09
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9. Some recent developments in models with absorbing states
We describe some of the recent results obtained for models with absorbing states. First, we present the nonequilibrium absorbing-state Potts model and discuss some of the factors that might affect the critical behaviour of such models. In particular we show that in two dimensions the further neighbour interactions might split the voter critical point into tw
Brazilian Journal of Physics. Publicado em: 2003-09
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10. Depinning transitions in interface growth models
Pinning-depinning transitions are roughening transitions separating a growing phase and pinned (or blocked) one, and are frequently connected to transitions into absorbing states. In this review, we discuss lattice growth models exhibiting this type of dynamic transition. Driven growth in media with impurities, the competition between deposition and desorpti
Brazilian Journal of Physics. Publicado em: 2003-09
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11. Catalysis with competitive reactions: static and dynamical critical behavior
We studied in this work a competitive reaction model between monomers on a catalyst. The catalyst is represented by hypercubic lattices in d = 1, 2 and 3 dimensions. The model is described by the following reactions: A + A -> A2 and A + B -> AB, where A and B are two monomers that arrive at the surface with probabilities yA and yB, respectively. The model is
Brazilian Journal of Physics. Publicado em: 2003-09
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12. Um modelo molecular para o magnetismo em ferro, cobalto e nÃquel
The orbital angular moment and the angular moment of spin guarantee the magnetism of the substance. When treating, specifically, of the magnetism in the iron, cobalt and nickel we are admired for the complexity that these metals of transition present in its referring electronic distributions to its levels of valence. Literature registers that many electronic
Publicado em: 2003