Effciency
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Legislação de compras e desempenho em instituições pública de pesquisa: um estudo de caso na Embrapa Semiárido
O objetivo desta pesquisa foi identificar a percepção dos empregados sobre a relação da legislação de compras com o desempenho da Embrapa Semiárido com base no critério de eficiência após a implantação do Pregão como uma nova modalidade licitatória. Foram realizadas pesquisas bibliográfica, documental, de campo, e para assegurar a validade das
Publicado em: 19/10/2012
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2. Active vibration control of a piezoelectric beam using PID controller: Experimental study
Vibration suppression of smart beams using the piezoelectric patch structure is presented in the present work. The smart system consists of a beam as the host structure and piezoceramic patches as the actuation and sensing elements. An experimental set-up has been developed to obtain the active vibration suppression of smart beam. The set-up consists of a sm
Lat. Am. j. solids struct.. Publicado em: 2012-12
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3. Eficiência de utilização de nutrientes em cinco espécies de Eucalyptus.
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Boletim de Pesquisa Florestal. Publicado em: 2011
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4. Desempenho produtivo de fêmeas das raças Canchim e Nelore. I. Desenvolvimento e puberdade.
Avaliar a eficiência produtiva da raça Canchim em comparação a raça Nelore; Apresenta os resultados referentes aos pesos dos animais e as idades e pesos a puberdade e de entrada em reprodução.
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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5. Control and filtering of time-varying linear systems via parameter dependent Lyapunov functions / Controle e filtragem de sistemas lineares variantes no tempo por meio de funções de Lyapunov dependentes de parametros
The main contribution of this dissertation is to propose conditions for linear filter and controller design, considering both robust and parameter dependent structures, for discrete time-varying systems. The controllers, or filters, are obtained through the solution of optimization problems, formulated in terms of bilinear matrix inequalities, using a method
Publicado em: 2009
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6. Modelos grafos para expressão gênica
The purpose of this work is to examine statistical methodologies that can be applied to problems that involve a large number of variables using as a tool graphical models that assist on the visualization of the conditional independency and dependency structure, thus a graphical model represents the relationship between random variables (dependence, independe
Publicado em: 2008
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7. Influência da utilização do ABS na segurança veicular baseada na eficiência de frenagem e na probabilidade de travamento de roda / Influence if the ABS use on vehicular safety based on braking efficiency and on the probability of wheel lockup
The ABS (Antilock Braking System) is a supplementary system to the regular service brake system, which prevents the wheel lock in any braking situation, mainly in emergency braking maneuvers, and it will guarantee stability and steerability of the vehicle and reduces, in most of the situations, the stopping distance in relation to the regular brake system. B
Publicado em: 2008
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8. SCALABLE TOPOLOGICAL DATA{STRUCTURES FOR 2 AND 3 MANIFOLDS / ESTRUTURAS DE DADOS TOPOLÓGICAS ESCALONÁVEIS PARA VARIEDADES DE DIMENSÃO 2 E 3
Research in data structure area are essential to increase the generality and computational effciency of geometric models` representation. In this work, we present two new scalable topological data structures, one for triangulated surfaces, called CHE (Compact Half { Edge ), and the another for tetrahedral meshes, called CHF (Compact Half { Face ). Such struc
Publicado em: 2006
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9. Boron doping of hydrogenated amorphous silicon prepared by rf-co-sputtering
This paper addresses the doping mechanism of amorphous semiconductors through the investigation of boron doped rf co-sputtered amorphous hydrogenated silicon. The activation energy and room temperature conductivity varied from 0.9 to 0.3 eV and from 10-12 to 10-4 Ohm-1 .cm-1, respectively, by ranging the boron concentration from 0 to 3 at.%. These ranges of
Brazilian Journal of Physics. Publicado em: 2002-06
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10. Estudo do efeito do tamanho das particulas sobre a hidrodinamica e eficiencia de separação do prato na destilação com particulas fluidizadas
Distillation is the most important separatin process and being a very high energy consuption, even quite small improvments in separation effciency would lead to cost benefits. In the present work is studied a method to improve contact between vapour and liquid in distillatinf dispersions by the addition solid particles to avoid jetting or the formation of la
Publicado em: 1995
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11. Reactivation of Newcastle Disease Virus Neutralized by Antibody.
In an effort to improve current technology for detection of Newcastle disease virus in convalescent birds, a procedure has been developed for efficient reactivation of virus that has been neutralized by antibody. The reactivation capabilities of fluorocarbon treatment, ultrasonic treatment, pH extremes, and proteolytic digestion were evaluated using the LaSo