Eigenvalue
Mostrando 13-24 de 112 artigos, teses e dissertações.
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13. Quasicomparison Functions and Substructure Synthesis for Framed Structures Stability Analysis
Abstract The Rayleigh-Ritz-Meirovitch substructure synthesis method (RRMSSM) is extended to buckling analysis in framed structures. The objective is a computational procedure capable of yielding very accurate critical loads through solution of very-low-order eigenvalue problems. In this regard, numerical examples demonstrate that the convergence characterist
Lat. Am. j. solids struct.. Publicado em: 2015
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14. OPTIMIZATION WITH LINEAR COMPLEMENTARITY CONSTRAINTS
A Mathematical Program with Linear Complementarity Constraints (MPLCC) is an optimization problem where a continuously differentiable function is minimized on a set defined by linear constraints and complementarity conditions on pairs of complementary variables. This problem finds many applications in several areas of science, engineering and economics and i
Pesqui. Oper.. Publicado em: 2014-12
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15. Capital social en áreas rurales: adaptación al español y validación factorial de una escala
Social capital is considered a structural determinant of social development and wellbeing. Its cognitive component assesses the degree of confidence of the population in their systems for social organization, as well as community interactions to coordinate social responses to social problems. There are few available scales for measuring this construct. This
Ciênc. saúde coletiva. Publicado em: 2014-07
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16. Free vibration analysis of orthtropic thin cylindrical shells with variable thickness by using spline functions
In this study, vibration behavior of orthotropic cylindrical shells with variable thickness is investigated. Based on linear shell theory and applying energy method and using spline functions, free vibration relations are derived for shell with variable thickness and curvature. Frequency parameter and mode shapes are found after solving the frequency Eigenva
Lat. Am. j. solids struct.. Publicado em: 2014
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17. Morphological traits and type of dairy goats registered in Brazil from 1976 to 2009
Data from 2439 goats of the Saanen, Alpine, Anglo Nubian and Toggenburg breeds recorded from 1976 to 2009 by the Association of Goats and Sheep Breeders of Minas Gerais were used in principal component analysis. After consistency of data, six morphological variables (thorax perimeter, body length, withers height, height, width and length of the rump) and 12
R. Bras. Zootec.. Publicado em: 2013-12
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18. Measures of irregularity of graphs
A graph is regular if every vertex is of the same degree. Otherwise, it is an irregular graph. Although there is a vast literature devoted to regular graphs, only a few papers approach the irregular ones. We have found four distinct graph invariants used to measure the irregularity of a graph. All of them are determined through either the average or the vari
Pesqui. Oper.. Publicado em: 08/11/2013
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19. Desenvolvimento e validação de uma escala de afetos positivos e negativos
O objetivo deste estudo foi construir e buscar evidências de validade para uma escala de afetos positivos e negativos (EA). Participaram 853 universitários do sul do Brasil (57% mulheres) com idade média de 21 anos (DP=3). Os resultados da análise de eixos principais mostraram uma solução bifatorial. O primeiro fator apresentou eigenvalue de 5,1, expli
Psico-USF. Publicado em: 2013-08
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20. Some results about the connectivity of trees
The second smallest Laplacian eigenvalue of a graph G is called algebraic connectivity, denoted a(G). The ordering of trees via this graph invariant is frequently studied in the literature. In this paper, we present a new invariant, the Internal Degree Sequence (IDS), that also supports an accurate evaluation of the connectivity of trees. We compare the IDS
Pesqui. Oper.. Publicado em: 2013-04
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21. Adaptação transcultural do Beliefs about Medicines Questionnaire para o Português
CONTEXTO E OBJETIVO O Beliefs about Medicines Questionnaire (BMQ-Específico) tem se mostrado útil na mensuração sobre as crenças dos pacientes e associando-os à não adesão ao tratamento em vários grupos de doença. O objetivo foi realizar a adaptação transcultural do BMQ-Específico em Português para a população geral de usuários de medicamen
Sao Paulo Med. J.. Publicado em: 2013-04
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22. Implementação de um algoritmo numérico para solução da equação de Christoffel generalizada em acustoelasticidade. / Implementation of a numerical algorithm for solution of the generalized Chistoffel equation in acoustoelasticity.
Extensive studies carried out in the last decades on the propagation of ultrasonic waves in solids led to the development of nondestructive techniques for the assessment of the safety and integrity of industrial structures and components. The interest in the application of ultrasound techniques for stress measurement for example comes from the measurable cha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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23. Sobre teorema de comparaÃÃo de autovalores de Cheng / On Cheng s eigenvalue comparison theorem
We present a version of Chengâs Eigenvalue Comparison Theorem, where the limitation of the sectional and Ricci curvature is changed by limiting the mean curvature of the ball away. Furthermore, the present construction of smooth metrics gk,in [0;r] x S3, non-isometric to the canonical metric of constant sectional curvature k, cank , such that the balls geod
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2012
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24. ANÁLISE DA CAUSALIDADE E COINTEGRAÇÃO ENTRE VARIÁVEIS MACROECONÔMICAS E O IBOVESPA / ANALYSIS OF CAUSALITY AND COINTEGRATION BETWEEN MACROECONOMIC VARIABLES AND IBOVESPA
The aim of this work was to assess the causality relation among the set of macroeconomic variables, represented by interest and exchange rates, inflation and Industrial Production Index as proxy of the Gross Internal Product regarding São Paulo Stock Exchange Index (IBOVESPA). The period of analysis was between January 1995 and December 2010 with 192 observ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012