Nonequilibrium Stationary States
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. AplicaÃÃo de mÃtodos correlacionados de estrutura eletrÃnica ao estudo de estados excitados de molÃculas em fase gasosa e em soluÃÃo
Ab-initio electronic structure calculations, at correlated level, are applied to the study of excited states of molecules in gas-phase and solution. The electron correlated methods comprise the multiconfigurational SCF (MCSCF), and the multi-reference CI method with single and double excitations (MR-CISD), which is used in combination with MCSCF, then provid
Publicado em: 2005
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2. Competing spin dynamics in ising systems
We study ferromagnetic and antiferromagnetic Ising models in contact with a heat reservoir, and subject to an external source of energy. The contact with the heat bath is simulated by a single-spin flip Glauber dynamics, while the flux of energy is simulated by the two-spin exchange Kawasaki process. Pair approximation and Monte Carlo calculations are employ
Brazilian Journal of Physics. Publicado em: 2000-03
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3. Percolation transitions and wetting transitions in stochastic models
Stochastic models with irreversible elementary processes are introduced, and their macroscopic behaviors in the infinite-time and infinite-volume limits are studied extensively, in order to discuss nonequilibrium stationary states and phase transitions. The Domany-Kinzel model is a typical example of such an irreversible particle system. We first review this
Brazilian Journal of Physics. Publicado em: 2000-03
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4. APROXIMACOES DE CAMPO MEDIO PARA O MODELO DE ISING COM INTERACOES AXIALMENTE COMPETITIVAS / Irreversibility network models with stochastic dynamics
Nesta resenha analisamos sistemas que se encontram em estados estacionários de não-equilíbrio através de um formalismo mecânico-estatístico que tem como base a construção de modelos de rede que evoluem no tempo de acordo com a dinâmica estocástico irreversível. A nossa análise foi elaborada para modelos que mimetizam processos irreversíveis estu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/06/1982
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5. Activation of thin-filament-regulated muscle by calcium ion: considerations based on nearest-neighbor lattice statistics.
We discuss the activation of thin-filament-regulated muscles by calcium ion in terms of a qualitative model based on nearest-neighbor lattice statistics. For the most part, the model takes into account only the essential features of the phenomenon--that there must be an interaction between calcium adsorption to troponin and crossbridge reaction with actin fo
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6. Concentration fluctuations in a mesoscopic oscillating chemical reaction system
Under sustained pumping, kinetics of macroscopic nonlinear biochemical reaction systems far from equilibrium either can be in a stationary steady state or can execute sustained oscillations about a fixed mean. For a system of two dynamic species X and Y, the concentrations nx and ny will be constant or will repetitively trace a closed loop in the (nx, ny) ph
National Academy of Sciences.