Dynamic Geometry
Mostrando 1-12 de 105 artigos, teses e dissertações.
-
1. Investigação do Fenômeno das Bolhas em Soldagem Subaquática Molhada com Arame Tubular Autoprotegido
Resumo O fenômeno de formação de bolhas está fortemente ligado a variação dos sinais elétricos e estabilização do arco de solda na soldagem subaquática molhada com arame tubular (FCAW). O bom entendimento desses fenômenos pode ser usado para uma melhor otimização dos parâmetros de soldagem e consequentemente uma melhoria na qualidade final da
Soldag. insp.. Publicado em: 15/08/2019
-
2. Contribuições da Geometria Dinâmica na Introdução ao Estudo de Perspectiva para Alunos do Ensino Médio
Resumo Neste artigo, teve-se por objetivo investigar as contribuições de uma proposta interventiva de ensino de Geometria, baseada nas ideias básicas da perspectiva, para ampliar o repertório de representações planas e as habilidades de visualização de dez alunos do Ensino Médio de uma escola pública brasileira do Ceará. Com base no desenvolviment
Bolema. Publicado em: 01/08/2019
-
3. BIOMECHANICS OF BONE BLOCK GRAFT MODELS OF DIFFERENT GEOMETRY
RESUMO Objetivo: Avaliar o comportamento mecânico de enxertos ósseos em blocos com geometrias diferentes usando modelos de madeira. Métodos: Montagens com “enxertos” de perfil retangular (G1) e trapezoidal (G2), fixadas com placas de compressão dinâmica de 3,5 mm e oito orifícios, foram submetidas a ensaios não destrutivos de flexão, com a carg
Acta ortop. bras.. Publicado em: 30/05/2019
-
4. Aportes de la Geometría Dinámica al estudio de la noción de función a partir de un problema geométrico: un análisis praxeológico
Abstract The objective of this research is to describe and perform a praxeological analysis of a geometrical problem that allows initiating the study of the function concept. We make a previous analysis of the knowledge and knowhow that can be used while studying this problem. Then, the problem is presented in numerous courses for Mathematics teachers, incor
Bolema. Publicado em: 2019-04
-
5. Tipos de Problemas que Provocan la Generación de Argumentos Inductivos, Abductivos y Deductivos
Abstract This paper presents a relation between the types of conjecturing open problems in geometry, preferably solved using Dynamic Geometry Systems, and the types of arguments produced. The aim of this paper is to show how each type of problem can elicit the production of certain types of arguments (inductive, abductive, and deductive) during the problem-s
Bolema. Publicado em: 2019-04
-
6. A Model Updating Method for Plate Elements Using Particle Swarm Optimization (PSO), Modeling the Boundary Flexibility, Including Uncertainties on Material and Dimensional Properties
Abstract It is a well-known fact that, in a real engineering situation, fixtures are not ideally stiff, so numerical simulations using them are unlikely to present results that are consistent with the experimental ones. The present paper intends to describe a model updating methodology inserting translational and rotational springs in order to better represe
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
-
7. A numerical study on the aerodynamic performance of building cross-sections using corner modifications
Abstract A numerical investigation is performed in this work in order to evaluate the aerodynamic performance of building cross-section configurations by using corner modifications. The CAARC tall building model is utilized here as reference geometry, which is reshaped considering chamfered and recessed corners. The numerical scheme adopted in this work is p
Lat. Am. j. solids struct.. Publicado em: 30/07/2018
-
8. Simulación matemática para la optimización del patrón de flujo entregado por una buza para el molde de colada continua de planchón delgado
ABSTRACT Understanding the behavior of the oscillations of the jets into the mold of thin slab funnel is essential to ensure a constant supply of liquid steel, improve control of the flow patterns and consequently increase plant productivity and the final product quality. To achieve this, we conducted a study of the effect of the internal design of the nozzl
Matéria (Rio J.). Publicado em: 19/07/2018
-
9. Wave propagation in cellular locally resonant metamaterials
Abstract Locally resonant acoustic metamaterials have recently attracted a great interest due to their dynamic behaviour, characterized by a band gap at relatively low frequencies. This paper provides a numerical study, by means of finite element modal analyses, of the dynamic properties of 1D mass-in-mass and 2D cellular locally resonant metamaterials. The
Lat. Am. j. solids struct.. Publicado em: 04/06/2018
-
10. Structural insights into leishmanolysins encoded on chromosome 10 of Leishmania (Viannia) braziliensis
BACKGROUND Leishmanolysins have been described as important parasite virulence factors because of their roles in the infection of promastigotes and resistance to host’s defenses. Leishmania (Viannia) braziliensis contains several leishmanolysin genes in its genome, especially in chromosome 10. However, the functional impact of such diversity is not under
Mem. Inst. Oswaldo Cruz. Publicado em: 2017-09
-
11. Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing
Abstract Thin walled multi-cell columns are highly efficient energy absorbers under axial compressions. Multi-cell features are usually obtained by placing stiffeners or ribs to get the required geometry features in the columns. In this study, the curved stiffeners with varying numbers in different configurations are used to support the circular single and b
Lat. Am. j. solids struct.. Publicado em: 2017-08
-
12. Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing
Abstract Thin walled multi-cell columns are highly efficient energy absorbers under axial compressions. Multi-cell features are usually obtained by placing stiffeners or ribs to get the required geometry features in the columns. In this study, the curved stiffeners with varying numbers in different configurations are used to support the circular single and b
Lat. Am. j. solids struct.. Publicado em: 2017-08