Eigenvalues
Mostrando 1-12 de 116 artigos, teses e dissertações.
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1. Analytic solutions of the Schrödinger equation with non-central generalized inverse quadratic Yukawa potential
Abstract This study presents the solutions of Schrödinger equation for the Non-Central Generalized Inverse Quadratic Yukawa Potential within the framework of Nikiforov-Uvarov. The radial and angular part of the Schrödinger equation are obtained using the method of variable separation. More so, the bound states energy eigenvalues and corresponding eigenfunc
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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2. Large deflection and initial instability analysis of anisotropic plates by the generalized finite element method
Abstract This paper presents investigations laminated plates under moderately large transverse displacements and initial instability, through the Generalized Finite Element Methods - GFEM. The von Kármán plate hypothesis are used along with Kirchhoff and Reissner-Mindlin kinematic plate bending models to approximate transverse displacements and critical bu
Lat. Am. j. solids struct.. Publicado em: 28/10/2019
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3. Effect of Pressure Gradient on the Development of Görtler Vortices
ABSTRACT: Boundary layers over concave surfaces may become unstable due to centrifugal instability that manifests itself as stationary streamwise counter rotating vortices. The centrifugal instability mechanism in boundary layers has been extensively studied and there is a large number of publications addressing different aspects of this problem. The results
J. Aerosp. Technol. Manag.. Publicado em: 24/10/2019
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4. Multivariate analysis of morphometry effect on race performance in Thoroughbred horses
ABSTRACT The objective of this study was to determine the effects of morphometric measurements on race performance (m/sec) of Thoroughbred horses. Data of morphometric measurements (withers height, rump height, chest girth, chest width, front chest width, chest depth, neck length, shoulder length, length of withers to rump, rump length, body length, head wid
R. Bras. Zootec.. Publicado em: 10/06/2019
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5. Validation of the Brazilian Version of the Screening Tool for Psychosocial Distress (Stop-D) for Cardiac Patients
Abstract Background: Distress has a potentiating effect on complications of heart disease. Early identification of distress and psychosocial management could help patients to deal with the disease and improve their quality of life. However, in Brazil, there is no specific instrument for evaluation of distress in cardiac patients. Objectives: To describe th
Int. J. Cardiovasc. Sci.. Publicado em: 15/04/2019
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6. Psychometric properties of the Liebowitz Social Anxiety Scale in a large cross-cultural Spanish and Portuguese speaking sample
Objective: To examine the psychometric properties of the Liebowitz Social Anxiety Scale-Self Report (LSAS-SR) based on a large sample recruited from 16 Latin American countries, Spain, and Portugal. Methods: Two groups of participants were included: a non-clinical sample involving 31,243 community subjects and a clinical sample comprising 529 patients with
Braz. J. Psychiatry.. Publicado em: 11/10/2018
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7. MULTIVARIATE ANALYSIS OF PEANUT MECHANIZED HARVESTING
ABSTRACT The peanuts harvesting mechanization is affected by the soil physical characteristics and it may increase the losses due to the production of pods in subsurface. The objective of the experiment was to identify the clusters through multivariate exploratory approaches from similarity in six soil textures (very clayey, clayey, silty clayey loam, clayey
Eng. Agríc.. Publicado em: 2018-04
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8. Analysis of Variables Affecting Carcass Weight of White Turkeys by Regression Analysis Based on Factor Analysis Scores and Ridge Regression
ABSTRACT In this study, the influence of carcass parts weights (thigh, breast, wing, back weight, gizzard, heart, and feet) on whole carcass weight of white turkeys (Big-6) was analyzed by regression analysis based on ridge regression and factor analysis scores. For this purpose, a total of 30 turkey carcasses of 15 males and 15 females with 17 weeks of age,
Braz. J. Poult. Sci.. Publicado em: 2018-04
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9. Locating Eigenvalues of Perturbed Laplacian Matrices of Trees
RESUMO Nós apresentamos um algoritmo de tempo linear para calcular o número de autovalores de uma matriz laplaciana perturbada qualquer associada a uma árvore, num dado intervalo real. Este algoritmo pode ser aplicado a árvores com ou sem pesos. Utilizando este procedimento, obtemos uma caracterização das árvores com até cinco autovalores distintos p
TEMA (São Carlos). Publicado em: 2017-12
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10. Ageismo no contexto organizacional: a percepção de trabalhadores brasileiros
Resumo Objetivo: elaborar a escala de ageísmo no contexto organizacional (EACO), buscando evidências de validade da sua estrutura e investigando possíveis diferenças nos preconceitos contra trabalhadores mais velhos. Este artigo destaca ainda diferenças observadas entre o sexo, idade e nível de escolaridade dos participantes. Método: O trabalho foi
Rev. bras. geriatr. gerontol.. Publicado em: 2017-12
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11. Populational brain models of diffusion tensor imaging for statistical analysis: a complementary information in common space
Abstract Introduction: The search for human brain templates has been progressing in the past decades and in order to understand disease patterns a need for a standard diffusion tensor imaging (DTI) dataset was raised. For this purposes, some DTI templates were developed which assist group analysis studies. In this study, complementary information to the most
Res. Biomed. Eng.. Publicado em: 24/08/2017
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12. Perception of barriers to physical exercise in women population over 60
Abstract Aims This study evaluated the possible barriers to the permanence of physical exercise (PE) of old women. Methods The study population comprised 61 old women participants for at least one year of a supervised PE program, who underwent anamnesis, and applied the Barriers Questionnaire to Physical Activity Practice in the Elderly (QBPAFI). Explorato
Motriz: rev. educ. fis.. Publicado em: 22/06/2017