Graphical
Mostrando 1-12 de 652 artigos, teses e dissertações.
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1. Assessment of Covariance Selection Methods in High-Dimensional Gaussian Graphical Models
ABSTRACT The covariance selection in Gaussian graphical models consists in selecting, based on a sample of a multivariate normal vector, all those pairs of variables that are conditionally dependent given the remaining variables. This problem is equivalent to estimate the graph identifying the nonzero elements on the off-diagonal entries of the precision mat
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. On the classification and treatment of outliers in a spatial context: A Bayesian Updating approach
Abstract Checking and treating extreme values is commonplace in modelling workflows. The main methods to manage outliers may be categorized into graphical, Kriging- and simulation-based approaches. While graphical methods usually classify outliers from a global perspective, geostatistical methods evaluate outliers in a local context. Ordinary-Kriging based a
REM, Int. Eng. J.. Publicado em: 2021-09
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3. Antioxidant and anti-diabetic properties of Spirulina platensis produced in Turkey
Graphical Abstract : TOC-Table of content. Abstract Spirulina produced in Turkey has a high antioxidant capacity determined by the three common methods (ABTS, CUPRAC, and DPPH). The major phenolics found in Spirulina were acacetin (53.62%) and pinocembrin (41.28%). The bio-accessibility values of the phenolic compounds in Spirulina were approximately 60%
Food Sci. Technol. Publicado em: 2021-09
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4. Finite strip method computer application for buckling analysis of thin-walled structures with arbitrary cross-sections
Abstract The Direct Strength Method (DSM) is a well-known formulation presented in the Brazilian standard ABNT NBR 14762:2010, that estimates the strength capacity of cold-formed steel (CFS) members. However, this formulation requires the elastic critical buckling loads as point of departure, regarding local (L), distortional (D) and global (G) modes, which
REM, Int. Eng. J.. Publicado em: 2021-09
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5. Deduction of Electric Field Module in a Multilayer of Isotropic Materials to Detect Surface Plasmons with a Graphical User Interface
Abstract Electric field module for any isotropic multilayer thin film structure, is presented as analytical deduction. Analytic expressions for the electric field distribution are developed initially for a monolayer isotropic system based on Airy's formulae and boundary conditions, with an incident monochromatic source of light. The transfer matrix method 2�
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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6. ALTERNATIVES TO ESTIMATE THE VOLUME OF INDIVIDUAL TREES IN FOREST FORMATIONS IN THE STATE OF MINAS GERAIS, BRAZIL
ABSTRACT The objective of this study was to compare different alternatives to estimate the stem volume of individual trees in four different forest formations in the Minas Gerais state, Brazil. The data were obtained in a forest inventory procedure performed by the Minas Gerais Technological Center Foundation. The stem volumes were computed by the Smalian ex
CERNE. Publicado em: 2020-09
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7. ANÁLISE GRÁFICA DO DESEMPENHO DE MÉTODOS COMPUTACIONAIS NO ESTUDO DE PROPRIEDADES TERMOQUÍMICAS
In this manuscript we have evaluated the computational methods performance in the calculation of thermochemical properties using graphical analysis. The analysis was carried out in a set of 74 organic molecules considering the following thermochemical properties: standard enthalpy of formation, ionization energy and electron and proton affinities. The evalua
Quím. Nova. Publicado em: 2020-03
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8. ANALYTICAL EXPRESSIONS FOR THE CONCENTRATION AND CURRENT IN THE REDUCTION OF HYDROGEN PEROXIDE AT A METAL-DISPERSED CONDUCTING POLYMER FILM
A mathematical model describing the reduction of Hydrogen peroxide (H2O2) to water in a metal dispersed conducting polymer film is discussed. The model is based on a system of reaction-diffusion equations containing a non-linear term related to Michaelis-Menten kinetics of the enzymatic reaction. The approximate analytical expressions corresponding to the co
Quím. Nova. Publicado em: 2020-01
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9. Influence of the social context in smoking during pregnancy
RESUMO Objetivo: conhecer as relações sociais e familiares de gestantes e analisar sua influência na manutenção do tabagismo, durante a gestação. Método: trata-se de um estudo descritivo-exploratório com abordagem qualitativa, que teve como sujeitos 10 gestantes tabagistas. Os dados foram coletados de janeiro a março/2015, por meio de entrevistas
Rev. Bras. Enferm.. Publicado em: 13/12/2019
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10. Avaliação da alfabetização gráfica de professores da Educação Básica em formação e em exercício
RESUMO Este artigo apresenta os resultados de uma pesquisa descritiva transversal realizada em uma universidade do centro-sul do Chile, na qual participam professores do Ensino Fundamental em formação e ativos, sobre representações gráficas por causa do papel que desempenham no processo de ensino e aprendizagem desde o primeiro ano do ensino básico no
Educ. rev.. Publicado em: 05/12/2019
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11. Visual FTBL Generator: Visual Generation Tool for 13C-FLUX File
Abstract 13C metabolic flux analysis (13C-MFA) has achieved increasing significance in quantitative metabolic system analysis in recent years. In 13C metabolic flux analysis, 13C-FLUX software is a major analytical tool. The software’s input script is primarily expressed in textual form without visual presentation of the structure of the entire metabolic
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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12. ESTUDO ELETRÔNICO DA REATIVIDADE DA 8-HIDROXIQUINOLINA SUBSTITUÍDA FRENTE AO SÍTIO DE LIGAÇÃO DO PEPTÍDEO β-AMILOIDE AO ÍON ZINCO
In this work, density functional theory (DFT) was used to study the caused effect on reactivity of 8-hydroxyquinoline (8-HQ) by substituent groups (-H, -CH3, -OCH3, -Cl and -NO2) on different positions of the 8-HQ structure. DFT was also used to obtain the electronic profile of β-amyloid peptide (Aβ) bind site to Zinc. The energies and absolute hardness (�
Quím. Nova. Publicado em: 21/10/2019