Cubic Wave Equation
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. O problema de Cauchy para a equação da onda cúbica
Neste trabalho estudamos um resultado de boa colocação global para a equação da onda cúbica δ(_t^2)u-∆_u+U^3=0 em R_R3, no qual os dados de Cauchy estão no espaço de Sobolev Hs(R3) x Hs1(R3), para 13 18
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2011
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2. Modelagem Computacional da Propagação Acústica Proveniente de Fontes Multifrequênciais Usando Guias Digitais de Ondas / Computational Modeling of Wave Propagation from Multifrequêncial Source Using Mesh Digital Waveguide
The goal of this research is the creation of virtual acoustic environments, in this context, was constructed a computational tool, aiming to the acoustic modeling of reverberation environment. In this way, it was necessary to elaborate a numerical system able to simulate the wave sound propagation and, mainly its interactions with the surfaces encountered in
Publicado em: 2009
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3. Filtros acústicos em cristais fonônicos
In this work, we have studied the acoustic phonon wave propagation within the periodic and quasiperiodic superlattices of Fibonacci type. These structures are formed by phononic crystals, whose periodicity allows the raise of regions known as stop bands, which prevent the phonon propagation throughout the structure for specific frequency values. This p
Publicado em: 2009
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4. Planar force-constant method for lattice dynamics of cubic III-nitrides
Using the density-functional theory within the Full Potential Linear Augmented Plane-Wave (FP-LAPW) method, we have calculated, in this work, the equation of state, the effective charges and the phonon dispersion along [100] and [111] directions for the cubic III-Nitrides(c-BN, c-AlN, c-GaN and c-InN), including hydrostatic strains dependence. A good agreeme
Brazilian Journal of Physics. Publicado em: 2002-06