Boundary Value Problems
Mostrando 1-12 de 51 artigos, teses e dissertações.
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1. Characterization of partnerships and collaborations in US cities' urban resilience plans
Abstract Purpose The United Nations Sustainable Development Goal (UN SDG) number 13 calls for urgent action to combat climate change impacts. Urban resilience planning documents often articulate partnerships and collaborations (P&Cs) as critical strategies. This study aims to identify the actors, the topics, processes, and visions of collaboration. Design/
RAUSP Management Journal. Publicado em: 2022
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2. Analytical solution for the stationary model of pollutant propagation in an aquatic medium
Resumo Este trabalho apresenta uma nova abordagem analítica para a solução de problemas de dispersão de poluentes ao longo de corpos hídricos com contornos irregulares. Nesta abordagem, a equação advectivo-difusiva é expressa em termos de coordenadas curvilíneas ortogonais que são definidas pelo potencial de velocidade e pela função de corrente c
Rev. Ambient. Água. Publicado em: 25/03/2019
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3. Efficient numerical method for solution of boundary value problems with additional conditions
Abstract An efficient numerical method for solution of boundary value problems with additional condition is presented. The approach is based on the shooting method but the procedure of seeking “the proper shot” allows one to satisfy “additional” boundary conditions. General considerations are illustrated by a real example. The computational example c
Braz. J. Chem. Eng.. Publicado em: 2017-07
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4. Pressure-Based and Potential-Based Differential Quadrature Procedures for Free Vibration of Circular Plates in Contact with Fluid
Abstract The differential quadrature method (DQM) has been so far applied to a wide variety of fluid and/or structural problems. The results of many researchers reveal that the DQM is computationally efficient and is applicable to a large class of boundary value problems. However, there is little information about its applications to fluid-structure interact
Lat. Am. j. solids struct.. Publicado em: 2016-04
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5. Numerical analysis of highly deformable elastoplastic beams
AbstractThe objective of the present study is to develop a numerical formulation to predict the behavior of highly deformable elastoplastic thin beams. Following the Euler-Bernoulli bending, the axial and shear effects are neglected, and the nonlinear second-order differential equation regarding the angle of rotation is defined based on the specific moment-c
Lat. Am. j. solids struct.. Publicado em: 2015-08
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6. Molecular dynamic study of the jet noise about the micro-scale tube
This paper studies the two-dimensional micro-scale molecular simulations of the jet flow using Lagrange discrete systems and adopting Andresen flexible constraint mechanism. At the effects of different excitation conditions and boundary conditions, the low Mach number flow field and sound field are obtained, and characteristic results are given. At the jet f
Matéria (Rio J.). Publicado em: 2014-12
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7. K-Teoria e aplicações para cálculos pseudodiferenciais globais e seus problemas de fronteira / K-Theory and applications for global pseudodifferential calculus and its boundary problems.
Nesta tese vamos apresentar dois resultados a respeito de K-teoria de álgebras C^{*} de classes de operadores pseudodiferenciais que são globalmente definidos em \\mathbb^. O primeiro resultado é a prova da regularidade da função \\eta para operadores clássicos com símbolos de Shubin. Vamos mostrar que a álgebra de operadores pseudodiferenciais em \\
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/08/2012
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8. Existência e multiplicidade de soluções de problemas de contorno elípticos de quarta ordem via métodos topológicos / Existence and multiplicity of solutions to elliptic boundary value problems by topological methods
Neste trabalho, utilizamos métodos topológicos para estudar existência e multiplicidade de soluções de Problemas de Contorno Elípticos Não Lineares de 4a ordem. Mais precisamente, utilizamos resultados sobre componentes conexas de pontos fixos e tambem bifurcação global, para provar existência e multiplicidade de soluções fracas de Equações Dif
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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9. Existência e multiplicidade de soluções de problemas de contorno elípticos de quarta ordem via métodos topológicos / Existence and multiplicity of solutions to elliptic boundary value problems by topological methods
Neste trabalho, utilizamos métodos topológicos para estudar existência e multiplicidade de soluções de Problemas de Contorno Elípticos Não Lineares de 4a ordem. Mais precisamente, utilizamos resultados sobre componentes conexas de pontos fixos e tambem bifurcação global, para provar existência e multiplicidade de soluções fracas de Equações Dif
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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10. Transient wave propagation phenomena at visco-elastic half-spaces under distributed surface loadings
This article analyzes the transient wave propagation phenomena that take place at 2D viscoelastic half-spaces subjected to spatially distributed surface loadings and to distinct temporal excitations. It starts with a fairly detailed review of the existing strategies to describe transient analysis for elastic and viscoelastic continua by means of the Boundary
Lat. Am. j. solids struct.. Publicado em: 2012-08
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11. Numerical solution of the variational PDEs arising in optimal control theory
An iterative method based on Picard's approach to ODEs' initial-value problems is proposed to solve first-order quasilinear PDEs with matrix-valued unknowns, in particular, the recently discovered variational PDEs for the missing boundary values in Hamilton equations of optimal control. As illustrations the iterative numerical solutions are checked against t
Computational & Applied Mathematics. Publicado em: 2012
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12. Solução analítica da aproximação Sn da equação de transporte para problemas de valor inicial e de contorno pela transformada dupla de Laplace / Analytical solution of approach SN of the equation of transport for problems of initial value and contour for the laplace double transformed
In this work a general analytical solution is reported, expressed in integral form for the time-dependent, one-dimensional SN transport equation in cartesian geometry valid for bounded and unbounded domain (0
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011