A BIEM optimization method for fracture dynamics inverse problem

In the present paper, based on the theory of dynamic boundary integral equation, an optimization method for crack identification is set up in the Laplace frequency space, where the direct problem is solved by the author's new type boundary integral equations and a method for choosing the high sensitive frequency region is proposed. The results show that the method proposed is successful in using the information of boundary elastic wave and overcoming the ill-posed difficulties on solution, and helpful to improve the identification precision.

Triomensional plasticity using BIEM

This paper presents the application of BIE techniques to elastoplastic three-dimensional problems. Along with the general procedures the needed integrations are described in detail and so is the flow chart of the written program.

Treatment of singularities in 2-D domains using BIEM

The singularities which arise when there is a sudden change of boundary conditions are modelled using spectral shape interpolation functions. The procedure can be used for elasticity as well as potential theory and to any degree of accuracy with respect to the smooth part of the curve.

The P-Adaptive BIEM Version in Elastostatics

This paper introduces the p-adaptive version of the boundary element method as a natural extension of the homonymous finite element approach. After a brief introduction to adaptive techniques through their finite element formulation in elastostatics, the concepts are cast into the boundary element environment. Thus, the p-adaptive version of boundary integral methods is shown to be a generalization of already well known ideas. In order to show the power of these numerical procedures, the results of two practical analysis using both methods are presented.

The p-Adaptive Biem Approach for Two-Dimensional Elasticity Analysis

This paper presents the development and application of the p-adaptive BIEM version in elastostatics. The basic concepts underlying the p-adaptive technique are summarized and discussed. Some Pascal pseudocodes which show the way how such a technique can be implemented easily in microcomputers are also provided. Both the applicability and the accuracy of the method proposed here are illustrated through a numerical example.

Time–Harmonic Behaviour of a Cracked Piezoelectric Solid by BIEM

ACM Computing Classification System (1998): J.2, G.1.9

Some advances in study of crack identification problems

In the present paper, the crack identification problems are investigated. This kind of problems belong to the scope of inverse problems and are usually ill-posed on their solutions. The paper includes two parts: (1) Based on the dynamic BIEM and the optimization method and using the measured dynamic information on outer boundary, the identification of crack in a finite domain is investigated and a method for choosing the high sensitive frequency region is proposed successfully to improve the precision. (2) Based on 3-D static BIEM and hypersingular integral equation theory, the penny crack identification in a finite body is reduced to an optimization problem. The investigation gives us some initial understanding on the 3-D inverse problems.

Interaction of linear waves with infinitely long horizontal cylinders studied by boundary element method

The two-dimensional problems concerning the interaction of linear water waves with cylinders of arbitrary shape in two-layer deep water are investigated by use of the Boundary Integral Equation method (BIEM). Simpler new expressions for the Green functions are derived, and verified by comparison of results obtained by BIEM with these by an analytical method. Examined are the radiation and scattering of linear waves by two typical configurations of cylinders in two-layer deep water. Hydrodynamic behaviors including hydrodynamic coefficients, wave forces, reflection and transmission coefficients and energies are analyzed in detail, and some interesting physical phenomena are observed.

Forat 18. 'Agujero 18'.

Vídeo emitido en el programa 'Tot l'Esport' del Canal 33. Vídeo publicado aunque no se ha encontrado el depósito legal

Sociodrama e prevenção do câncer de mama em mulheres com conflitos conjugais e familiares

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Distribuição de macrófitas aquáticas em relação a um gradiente ambiental na bacia do Rio Itanhaém, SP

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A influência do uso da terra nas características limnológicas da água em microbacias: um estudo de caso na bacia do rio Corumbataí, SP

Não disponível

Ludicidade: projeto arquitetônico e paisagístico de educação infantil

Criança gosta mesmo de brincar. Em casa, na rua, em qualquer lugar. E por que não na escola? O lugar de estudar não poderia ter mais espaços para brincar? Faltam em nossas escolas áreas mais interessantes e atraentes que o playground convencional, que incitem a aventura, o desafio, às brincadeiras em grupo. A melhor forma de se aprender na infância é através das brincadeiras, que formam o alicerce para o seu futuro lingüístico, de raciocínio, de lógica, de inserção na sociedade. Por meio das brincadeiras, as crianças evidenciam seus sentimentos, seu entendimento de mundo, suas descobertas, suas construções. Quando bem orientadas e acompanhadas, elas não são apenas passatempo e sim a forma mais consistente e genuína de aprendizagem. A aprendizagem na Educação Infantil acontece de forma experimental, ou seja, a criança necessita fazer e fazendo vai construindo os seus conceitos. No playground, a criança experimenta os brinquedos que ainda não usou, arrisca, persiste, esforça-se, sem a crítica e a vergonha que mais tarde inibe e desestimula as suas ações. Na EMEI Márcia de Almeida Bighetti, localizada no Núcleo Habitacional Mary Dota na cidade de Bauru, espaço é que não falta para um projeto lúdico. Por possuir um enorme terreno para um pequeno bloco de salas de aula e apenas alguns brinquedos no parquinho, essa foi a escola escolhida para a proposta de um espaço lúdico infantil

Influence of landscape properties on stream water quality in agricultural catchments in Southeastern Brazil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

B.I.E.M.in 3-D elasto-plastic problems

In this paper we present the application of BIEM to elastoplastic axysimetric problems. After a brief presentation of the basic integral formulation we introduce the discretizing and iterative process for its resolution. Simple problems are compared in order to test the possibilities of the method and we finish commenting on future research needs.