Logarithmic Functions
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Association between asthma and sleep hours in Brazilian adolescents: ERICA
Abstract Objective To investigate the association between asthma and sleep duration in participants of the Study of Cardiovascular Risks in Adolescents. Materials and methods Cross-sectional, national, school-based study, involving adolescents aged 12-17 years. In the period between 2013−14, data from 59,442 participants were analyzed. Bivariate analysis
J. Pediatr. (Rio J.). Publicado em: 2021-08
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2. ESTIMATIVAS DE PARÂMETROS GENÉTICOS E DE AMBIENTE PARA MEDIDAS REPETIDAS DE PRODUÇÃO LEITEIRA EM CAPRINOS
Resumo Objetivou-se com este estudo comparar funções matemáticas no ajuste da curva de lactação média e individual de caprinos e estimar parâmetros genéticos e ambientais para medidas repetidas de produção de leite. Foram utilizadas 183 lactações, sendo 121 de cabras Saanen e 62 de cabras Alpinas, de animais pertencentes ao Laboratório de Caprin
Ciênc. anim. bras.. Publicado em: 10/06/2019
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3. MODELADO DE PARTÍCULAS PM10 Y PM2.5 MEDIANTE REDES NEURONALES ARTIFICIALES SOBRE CLIMA TROPICAL DE SAN FRANCISCO DE CAMPECHE, MÉXICO
In this paper, a computational methodology based on Artificial Neural Networks (ANN) was developed to estimate the index of PM10 and PM2.5 concentration in air of San Francisco de Campeche city. A three layer ANN architecture was trained using an experimental database composed by days of the week, time of day, ambient temperature, atmospheric pressure, wind
Quím. Nova. Publicado em: 2017-09
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4. MODELACIÓN DEL EFECTO DE LA PODA Y RALEO SOBRE LAS DEFORMACIONES RESIDUALES LONGITUDINALES EN Eucalyptus globulus Labill.
ABSTRACT A 12-year-old Eucalyptus globulus plantation forest was studied with the aim of assessing and modeling the effect of both pruning and thinning activities on the growth strain. The stand is located in the Andean foothills of Bío Bío region in Chile. Two forest management activities were carried out after 2 and half years from planting, and were eva
Ciênc. Florest.. Publicado em: 2016-09
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5. The impact of asymptomatic vertebral fractures on quality of life in older community-dwelling women: the São Paulo Ageing & Health Study
OBJECTIVES: The aim of this study was to investigate the impact of asymptomatic vertebral fractures on the quality of life in older women as part of the Sao Paulo Ageing & Health Study. METHODS: This study was a cross-sectional study with a random sample of 180 women 65 years of age or older with or without vertebral fractures. The Quality of Life Questionna
Clinics. Publicado em: 2012-12
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6. Radiatively induced non linearity in the Walecka model
We evaluate the effective potential for the conventional linear Walecka non perturbatively up to one loop. This quantity is then renormalized with a prescription which allows finite vacuum contributions to the three as well as four 1PI Green's functions to survive. These terms, which are absent in the standard relativistic Hartree approximation, have a logar
Brazilian Journal of Physics. Publicado em: 2010-12
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7. Uma trajetória hipotética de aprendizagem sobre funções logarítmicas
This work has as objective, contribute to the reflection about an important moment in the process of curriculum implementation, in other words, the one which is developed inside of the classroom, analyzing how its plan can be done and where is the teacher related to this process. It has as a theoretician recital the Simons works about hypothetical trajectori
Publicado em: 2009
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8. Risky assets performance measures analysis: a study of potential investment, Sharpe ratio and generalized Sharpe ratio indexes. / Análise de medidas de desempenho de ativos de risco: um estudo dos índices de potencial de investimento, Sharpe e Sharpe generalizado
This master dissertation studies and compares the characteristics of Sharpe ratio and its variants, SRc and SRd, generalized Sharpe ratio (GSR) and investment potential (IP), both GSR and IP associated to any utility function. By the fact that GSR and IP are identical indexes, empiric tests were conducted between SRc and GSR. The indexes were evaluated theor
Publicado em: 2008
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9. Variance components and breeding value for test day and lactation milk yields in holstein cattle with different statistical models. / Componentes de variância e valores genéticos para as produções de leite do dia do controle e da lactação na raça holandesa com diferentes modelos estatísticos.
Covariance components and genetic parameters for milk yield from 263,390 test-day records of 32,448 first lactation Holstein cows were estimated using animal models by REML. Test-day repeatability (RM) and random regression (RR) models were compared to a 305-d lactation model (P305) to estimate breeding values. Random regression involved the five-parameter l
Publicado em: 2003
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10. Formulações não-singulares do método dos elementos de contorno aplicadas a problemas bidimensionais de potencial
In this work three non-singular formulations applied to two-dimensional potential problems are presented and implemented. In these formulations quadratic, cubic and quartic isoparametric boundary elements were used. The first formulation is based on the standard BEM with the collocation point outside the domain, associated with a sub-element technique. The s
Publicado em: 2001
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11. Efeitos de tamanho em cadeias de Heisenberg-ising com interações antiferromagneticas
Finite Heisenberg-Ising quantum chains, for spin s = 1/2 and periodic boundary conditions, are exactly solved by numerical methods diagonalizing the Hamiltonian using the Lanczos method up to size N = 28 spins. Interesting physical quantities are computed, including the ground state energy, the mass gap, the spin-wave velocity, and correlation functions. Sca
Publicado em: 1991
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12. Photon Propagation Function: A Comparison of Asymptotic Functions
An earlier paper asserts the logarithmic asymptotic identity of various asymptotic functions associated with the photon propagation function, including the spectral weight function and the Gell-Mann-Low function. This note exhibits explicit expressions for the deviations between pairs of functions. It is emphasized that the differences are quantitatively sma