Direct Problem
Mostrando 25-36 de 398 artigos, teses e dissertações.
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25. LINEAR STABILITY ANALYSIS AND CFD SIMULATION OF DOUBLE-LAYER RAYLEIGH-BÉNARD CONVECTION
Abstract Natural convection in superimposed layers of fluids heated from below is commonly observed in many industrial and natural situations, such as crystal growth, co-extrusion processes and atmospheric flow. The stability analysis of this system reveals a complex dynamic behavior, including the potential multiplicity of stationary states and occurrence o
Braz. J. Chem. Eng.. Publicado em: 2016-09
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26. 2D Problem for a Long Cylinder in the Fractional Theory of Thermoelasticity
Abstract In this manuscript, we solve an asymmetric 2D problem for a long cylinder. The surface is assumed to be traction free and subjected to an asymmetric temperature distribution. A direct approach is used to solve the problem in the Laplace transformed domain. A numerical method is used to invert the Laplace transforms. Graphically results are given and
Lat. Am. j. solids struct.. Publicado em: 2016-08
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27. On the Validation of a Numerical Model for the Analysis of Soil-Structure Interaction Problems
Abstract Modeling and simulation of mechanical response of structures, relies on the use of computational models. Therefore, verification and validation procedures are the primary means of assessing accuracy, confidence and credibility in modeling. This paper is concerned with the validation of a three dimensional numerical model based on the finite element
Lat. Am. j. solids struct.. Publicado em: 2016-08
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28. Patterns of chronic benzodiazepine use in the elderly
Abstract Background In several countries, prevalence studies demonstrate that chronic use of BZD in the elderly population is very high. This scenario has reached pandemic proportions for decades and is an important public health problem. Objectives To examine the independent association between chronic benzodiazepine use in depression, anxiety and bipol
Arch. Clin. Psychiatry (São Paulo). Publicado em: 2016-08
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29. Una revisión de literatura sobre el uso de modelación y simulación computacional para la enseñanza de la física en la educación básica y media
This paper presents a literature review covering the central epistemological, psychopedagogical and didactical framework on researches about Computational Modeling and Simulation (CMS) activities in physics education (Middle and High School levels). The main search was performed in the following databases: Science Direct, Scopus, Web of Science and Google Sc
Rev. Bras. Ensino Fís.. Publicado em: 31/05/2016
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30. Sensitivity and specificity of parallel or serial serological testing for detection of canine Leishmania infection
In Brazil, human and canine visceral leishmaniasis (CVL) caused byLeishmania infantum has undergone urbanisation since 1980, constituting a public health problem, and serological tests are tools of choice for identifying infected dogs. Until recently, the Brazilian zoonoses control program recommended enzyme-linked immunosorbent assays (ELISA) and indirect i
Mem. Inst. Oswaldo Cruz. Publicado em: 19/02/2016
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31. Snakes and snakebite envenoming in Northern Tanzania: a neglected tropical health problem
Background Snakebites cause considerable human and livestock injuries as well as deaths worldwide, and particularly have a high impact in sub-Saharan Africa. Generating a basic platform of information on the characteristics of snakes and snakebites in various countries is relevant for designing and implementing public health interventions.Methods This study
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 29/09/2015
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32. Resolver ejercicios no es fácil. El papel de la metodología científica en la resolución de problemas de física
At university introductory physics courses, often problems are solved as a direct application of theory, as if they were exercises. In this paper we present evidence that students tend to solve problems in a superficial manner, without applying fundamental problem-solving strategies such as qualitative analysis or hypothesis making which prevents them from a
Rev. Bras. Ensino Fís.. Publicado em: 2015-09
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33. The Caughey absorbing layer method - implementation and validation in Ansys software
AbstractThis paper addresses the Caughey Absorbing Layer Method (CALM) performance in the one-dimensional problem and its implementation in commercial software, with possibility of direct extension to two-dimensions. The adequacy and numerical efficiency is evaluated using three different error measures and five different variations of the damping profile. O
Lat. Am. j. solids struct.. Publicado em: 2015-08
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34. Development of the endocrine pancreas and novel strategies for β-cell mass restoration and diabetes therapy
Diabetes mellitus represents a serious public health problem owing to its global prevalence in the last decade. The causes of this metabolic disease include dysfunction and/or insufficient number of β cells. Existing diabetes mellitus treatments do not reverse or control the disease. Therefore, β-cell mass restoration might be a promising treatment. Severa
Braz J Med Biol Res. Publicado em: 10/07/2015
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35. Two clusters of child molesters based on impulsiveness
Objective:High impulsiveness is a general problem that affects most criminal offenders and is associated with greater recidivism risk. A cluster analysis of impulsiveness measured by the Barratt Impulsiveness Scale - Version 11 (BIS-11) was performed on a sample of hands-on child molesters.Methods:The sample consisted of 208 child molesters enrolled in two d
Rev. Bras. Psiquiatr.. Publicado em: 01/05/2015
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36. A path-following driver/vehicle model with optimized lateral dynamic controller
Reduction in traffic congestion and overall number of accidents, especially within the last decade, can be attributed to the enormous progress in active safety. Vehicle path following control with the presence of driver commands can be regarded as one of the important issues in vehicle active safety systems development and more realistic explanation of vehic
Lat. Am. j. solids struct.. Publicado em: 2014-08