Navegação Ciências Exatas e da Terra por Título
Resultados 1390-1409 de 5955
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Dynamical large deviations for the boundary driven symmetric exclusion process with Robin boundary conditions
(2022) [Artigo de periódico]In this article, we consider a one-dimensional symmetric exclusion process in weak contact with reservoirs at the boundary. In the diffusive time-scaling the empirical measure evolves according to the heat equation with ... -
Dynamical model for competing opinions
(2012) [Artigo de periódico]We propose an opinion model based on agents located at the vertices of a regular lattice. Each agent has an independent opinion (among an arbitrary, but fixed, number of choices) and its own degree of conviction. The latter ... -
Dynamical realization of magnetic states in a strongly interacting Bose mixture
(2017) [Artigo de periódico]We describe the dynamical preparation of magnetic states in a strongly interacting two-component Bose gas in a harmonic trap. By mapping this system to an effective spin-chain model, we obtain the dynamical spin densities ... -
Dynamical solutions of linear matrix differential equations
(1990) [Artigo de periódico] -
Dynamical studies of cluster pairs in the magellanic clouds
(1998) [Artigo de periódico]We performed N-body simulations of star cluster encounters with Hernquist’s TREECODE in a CRAY YMP-2E computer under different initial conditions (relative positions and velocities, cluster sizes, masses and concentration ... -
Dynamic and resuspension by waves and sedimentation pattern definition in low energy environments Guaíba Lakes (Brazil).
(2013) [Artigo de periódico]Little research has been undertaken into sediment dynamics in lakes, and most of it only analyses particular aspects such as the texture of the sediments. In this study, the characteristics of the wave field in Guaíba Lake ... -
Dynamic and static calibration of ultra-low-voltage, digital-based operational transconductance amplifiers
(2020) [Artigo de periódico]The calibration of the effects of process variations and device mismatch in Ultra Low Voltage (ULV) Digital-Based Operational Transconductance Amplifiers (DB-OTAs) is addressed in this paper. For this purpose, two dynamic ... -
Dynamic constrained coalition formation among electric vehicles
(2014) [Artigo de periódico]Background: The use of electric vehicles (EVs) and vehicle-to-grid (V2G) technologies have been advocated as an efficient way to reduce the intermittency of renewable energy sources in smart grids. However, operating on ... -
Dynamic facilitation picture of a higher-order glass singularity
(2010) [Artigo de periódico]We show that facilitated spin mixtures with a tunable facilitation reproduce, on a Bethe lattice, the simplest higher-order singularity scenario predicted by the mode-coupling theory (MCT) of liquid-glass transition. ... -
Dynamic modular networks model mediated by confinement
(2019) [Artigo de periódico]We present a model for network transformation mediated by confinement, as a demonstration of a simple network dynamics that has a direct connection with real world quantities. The model has the capacity of generating complex ... -
Dynamic of Langmuir wave decay in two dimensions
(2008) [Artigo de periódico]The present paper reports on the first two-dimensional 2D self-consistent solution of weak turbulence equations describing the evolution of electron-beam-plasma interaction in which quasilinear as well as nonlinear three-wave ... -
Dynamics of antiproton plasma in a timedependent harmonic trap
(2021) [Artigo de periódico]An antiproton plasma confined in a quasi-1D device is described in terms of a self-consistent fluid formulation using a variational approach. Unlike previous treatments, the use of the time-dependent variational method ... -
Dynamics of gauge systems and Dirac's conjecture
(1985) [Artigo de periódico]For systems possessing only first-class constraints, we rigorously prove that the secondary constraints act as independent generators of gauge transformations (Dirac's conjecture). The proof essentially consists in ... -
Dynamics of spin and density fluctuations in strongly interacting few-body systems
(2019) [Artigo de periódico]The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the ... -
Dynamics of the frustrated ising lattice gas
(2000) [Artigo de periódico]The dynamical properties of a three-dimensional model glass, the frustrated Ising lattice gas (FILG), are studied by Monte Carlo simulations. We present results of compression experiments, where the chemical potential is ... -
Dynamics of thermal growth of silicon oxide films on Si
(2000) [Artigo de periódico]Thermal growth of silicon oxide films on Si in dry O₂ is modeled as a dynamical system, assuming that it is basically a reaction-diffusion phenomenon. Relevant findings of the last decade are incorporated, as structure and ... -
Dynamics, thermodynamics, and phase transitions of classical spins interacting through the magnetic field
(2018) [Artigo de periódico]We introduce and study a one dimensional model of classical planar spins interacting self-consistently through magnetic field. The spins and the magnetic field evolve in time according to the Hamiltonian dynamics which ... -
Dynamic transitions in a three dimensional associating lattice gas model
(2010) [Artigo de periódico]We investigate the thermodynamic and dynamic properties of a three dimensional associating lattice gas (ALG) model through Monte Carlo simulations. The ALG model combines a soft core potential and orientational degrees of ... -
Dynamic transitions in a two dimensional associating lattice gas model
(2009) [Artigo de periódico]Using Monte Carlo simulations we investigate some new aspects of the phase diagram and the behavior of the diffusion coefficient in an associating lattice gas (ALG) model on different regions of the phase diagram. The ALG ... -
Dynamic transmission modeling of COVID-19 to support decision-making in Brazil : a scoping review in the pre-vaccine era
(2023) [Artigo de periódico]Brazil was one of the countries most affected during the first year of the COVID-19 pandemic, in a pre-vaccine era, and mathematical and statistical models were used in decisionmaking and public policies to mitigate and ...
