Linear Transformations
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. Modeling residual biomass from mechanized wood harvesting with data measured by forest harvester
Abstract: The lack of accurate models for estimating residual biomass in wood harvesting operations results in underutilization of this co-product by forestry companies. Due to the lack of this information, forestry operations planning, such as chipping and transport logistics, are influenced, with a consequent increase in costs. Thereby, the aim of this stu
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
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2. A Teoria da Atividade na Produção de Material Didático Digital Interativo de Matemática
Resumo Neste artigo discutimos o modo como a linguagem matemática formal, as tecnologias digitais, a internet, os ambientes virtuais de aprendizagem e a interação entre participantes de cursos a distância podem influenciar e transformar a produção de conhecimento em cursos a distância. Consideramos a pesquisa que deu origem a este artigo como um estud
Bolema. Publicado em: 02/12/2019
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3. ENTRE MODULACIONES DE AFECTO Y AUTORIDAD EN EPISODIOS DE LA HISTORIA DE LA EDUCACIÓN CHILENA (C.1820-C.1950).
Resumo: Este artigo, que se enquadra no âmbito da história das emoções na educação, tem como objetivo apresentar diferentes articulações entre os conceitos de afeto e autoridade em diferentes períodos da história da educação chilena. Através da análise sobre o discurso dos teóricos, autoridades, professores e alunos, é possível perceber o tr
Hist. Educ.. Publicado em: 25/11/2019
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4. Propagation of bichromatic-bidirectional waves
RESUMO Este trabalho tem por objetivo investigar as transformações sobre o nível médio da água e o tensor de tensão de radiação durante a propagação de ondas Bicromáticas e Bidirecionais (Bi-Bi) em um talude 1:22 e profundidades variando de 55 cm a 26 cm, simulando uma bacia de ondas em laboratório. Um modelo matemático escrito em Python foi ut
RBRH. Publicado em: 14/02/2019
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5. SELECTING WORKING TEAMS FOR INFORMATION TECHNOLOGY OUTSOURCING PROJECTS THROUGH A COMBINATION OF METHODOLOGIES
ABSTRACT This paper deals with a problem that Information Technology outsourcing suppliers generally face when selecting a working team technically capable for specific roles in software development projects. A combination of methodologies, interactively integrated, is proposed. They are Soft System Methodology to structure the problem, Repertory Grid for in
Pesqui. Oper.. Publicado em: 2017-01
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6. On the geometric modulation of skin lesion growth: a mathematical model for melanoma
Abstract Introduction Early detection of suspicious skin lesions is critical to prevent skin malignancies, particularly the melanoma, which is the most dangerous form of human skin cancer. In the last decade, image processing techniques have been an increasingly important tool for early detection and mathematical models play a relevant role in mapping the p
Res. Biomed. Eng.. Publicado em: 18/03/2016
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7. Magnetohydrodynamic axisymmetric flow of a third-grade fluid between two porous disks
This paper investigates magnetohydrodynamic axisymmetric flow of a third-grade fluid between two porous disks. The governing partial differential equations are transformed into ordinary differential equations by similarity transformations. The resulting non-linear problem is solved by a homotopy analysis method (HAM). The effects of dimensionless parameters
Braz. J. Chem. Eng.. Publicado em: 2013-09
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8. Transformações em modelos de séries temporais / Transformations in time series models
Cordeiro and Andrade (2009) incorporate the idea of transforming the response variable to the GARMA model, generalized autoregressive moving average, introduced by Benjamin et al. (2003), thus developing the TGARMA model, transformed generalized autoregressive moving average. The goal of this thesis is to develop the TGARMA model introduced by Cordeiro and A
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/05/2012
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9. Constructing Common-Factor Portfolios
In this paper we construct common-factor portfolios using a novel linear transformation of standard factor models extracted from large data sets of asset returns. The simple transformation proposed here keeps the basic properties of the usual factor transformations, although some new interesting properties are further attached to them. Some theoretical advan
Escola de Pós-Graduação em Economia da FGV. Publicado em: 19/04/2012
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10. Soluções particulares para as equações de Navier-Stokes tridimensionais transientes
Este Trabalho apresenta novas soluções exatas para as equações de Navier – Stokes transientes tridimensionais para escoamentos viscosos incompressíveis. Estas soluções são obtidas por meio de Split e Transformações Auto-Bäcklund. O procedimento de Split desacopla as equações de Navier – Stokes em dois sistemas de equações diferenciais parc
Publicado em: 2011
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11. An improved strategy for evaluating the extent of chronic arterial baroreceptor denervation in conscious rats
There is no index or criterion of aortic barodenervation, nor can we differentiate among rats that have suffered chronic sham, aortic or sino-aortic denervation. The objective of this study was to develop a procedure to generate at least one quantitative, reproducible and validated index that precisely evaluates the extent of chronic arterial barodenervation
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-11
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12. Electro-thermomechanical properties of superelasticity in single crystals shape memory alloys
In this work, superelastic behavior of single crystals shape memory alloys has been investigated by the electric resistivity (ER) measure technique coupled simultaneously during traction tests. Samples in austenitic phase were submitted to stress induced martensite (SIM) under several conditions such as: different temperatures, different deformation rate, th
Materials Research. Publicado em: 2010-06