Parametric Identification
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. A procedure for the parametric identification of viscoelastic dampers accounting for preload
Passive vibration isolators are usually made of viscoelastic materials. These materials have non-linear characteristics that change their dynamical properties with temperature, frequency and strain level. The vibration isolator's mathematical modeling and optimal design require the prior knowledge of the stiffness and damping of the applied viscoelastic mate
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-06
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14. Controle PID e Preditivo â Aspectos TeÃricos e de ImplementaÃÃo PrÃtica / Control PID AND Predictive - Theoretical Aspects and Practical Implemantation
Nowadays, we observe the exponential increasing of demand for performance optimization in all areas of modern life. This search for better performances is also occurring in all industry sectors, either factory or energy activities. This best performances reflects an increase is all levels and achieve enormously the process control systems. With more strict p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2011
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15. Identidade, discriminação e saúde mental em estudantes universitários / Identity, discrimination and mental health in undergraduate students
Objectives: To research, on a sample of undergraduate students from the University of Campinas, if reports of different kinds of experiences of feeling discriminated can be related to worse indicators of quality of life and to psychopathological repercussions, identifying possible social, ethnic, demographic and cultural factors which can exert modulation on
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2011
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16. ANÃLISE DE CONVERGÃNCIA DOS RETORNOS DAS AÃÃES DE EMPRESAS DO SETOR FINANCEIRO BRASILEIRO / CONVERGENCE ANALYSIS OF THE RETURNS OF SHARES OF BRAZILIAN BUSINESS FINANCE
Este estudo consiste em uma anÃlise da validade da hipÃtese de tendÃncia de crescimento comum presente na evoluÃÃo da cotaÃÃo de 31 aÃÃes das principais instituiÃÃes financeiras cotadas na BM&FBovespa durante o perÃodo de janeiro de 2000 a junho de 2007, com base no arcabouÃo semi paramÃtrico de Philips e Sul (2007). Sendo as aÃÃes uma deriva
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/02/2011
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17. A Procedure for the Parametric Identification of Viscoelastic Dampers Accounting for Preload
Passive vibration isolators are usually made of viscoelastic materials. These materials have non-linear characteristics that change their dynamical properties with temperature, frequency and strain level. The vibration isolator’s mathematical modeling and optimal design requires the prior knowledge of the stiffness and damping of the applied viscoelastic m
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-09
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18. Identification and estimation of interventions using changes in inequality measures
This paper presents semiparametric estimators of changes in inequality measures of a dependent variable distribution taking into account the possible changes on the distribu- tions of covariates. When we do not impose parametric assumptions on the conditional distribution of the dependent variable given covariates, this problem becomes equivalent to estimati
Publicado em: 16/06/2010
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19. IDENTIFICATION OF THE BEHAVIOR OF TEMPERATURE MAIN RECTIFIER OF A DIESEL-ELECTRIC LOCOMOTIVE / IDENTIFICAÇÃO DO COMPORTAMENTO DA TEMPERATURA DO RETIFICADOR PRINCIPAL DE UMA LOCOMOTIVA DIESEL-ELÉTRICA
In this dissertation, we explore the application of the Theory of System Identification to develop a mathematical model that represents the behavior of the electrical current rectifier used to power the traction motors of a locomotive diesel-electric, based on mathematical manipulation of its temperature data. It was developed an ARX model and, using the aid
Publicado em: 2010
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20. Arquitetura aberta para controle de robôs manipuladores
Este documento trata da especificação de uma arquitetura aberta para controle de robôs manipuladores. A arquitetura é implementada utilizando o framework do projeto OROCOS, ambiente que já foi utilizado com sucesso em alguns sistemas de controle de robôs. Esta arquitetura é especificada para um robô manipulador genérico de N juntas, definindo compon
Publicado em: 2010
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21. Análise de convergência de performance das bolsas de valores: a situação do ibovespa no cenário mundial / Convergence analysis of performance of stock values: the state of the Bovespa index on the world stage
This work analyses the validity of the hypothesis of common growth trend in the evolution of indices traded in the 36 of the major stock exchanges worldwide allocated in economies with different development levels, located on all continents, during the period from January 1998 to December 2007, based on semi parametric approach developed by Philips and Sul (
Publicado em: 2009
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22. Uso de álcool na gestação e sua relação com sintomas depressivos no pós-parto / Alcohol use in pregnancy and its relationship with postpartum depressive symptoms
O consumo de álcool durante a gestação tem sido associado na literatura científica a uma maior intensidade de sofrimento psiquiátrico durante a gestação e no pós-parto. Este estudo teve como objetivo principal verificar se o consumo de álcool em gestantes está relacionado a um aumento de sintomas depressivos e/ou ao diagnóstico de depressão no p�
Publicado em: 2009
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23. Aspects of psychosexuality and personality of maleto- female and female-to-male transsexuals evaluated by Szondi projetive test / Aspectos da psicossexualidade e da personalidade de pacientes autodenominados transexuais masculinos e femininos avaliados pelo teste projetivo de Szondi
Transsexualism is a disorder of sexual identity associated with strong and persistent identification with the opposite sex. There are few studies concerning the use of psychological tests as diagnostic tools for transsexualism. The objective of this study was to assess the psychosexual aspects of self-denominated transsexuals through the Szondi test. Retrosp
Publicado em: 2009
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24. Identificação de parametros de mancal através de analise de correlações / Bearing parameters identification through correlation analysis
This work presents an identification methodology of stiffness and damping parameters of rolling bearings in a rotor-bearing system. The proposed method is based on Ljapunov matrix equation and state space representation. Through the definition of correlations used in matrix equation, it is possible to generate an algorithm that relates system physical parame
Publicado em: 2008