Linear Operators
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. Use of Direct Aqueous Injection and Solid Phase Extraction Coupled with Hydrophilic Interaction Chromatography to Analyze Haloacetic Acids in Drinking Water Samples
In this study, two analytical methods were evaluated to determine haloacetic acids (HAAs) in drinking water samples. Direct aqueous injection (DAI) and solid phase extraction (SPE) were evaluated and determination was performed by liquid chromatography tandem mass spectrometry (LC-MS/MS) with a hydrophilic interaction chromatography (HILIC) analytical column
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Correção de medida ultrassonográfica de carcaça em coelhos usando modelo linear misto com covariáveis
RESUMO Objetivou-se avaliar a correção da medida ultrassonográfica da área do músculo Longissimus dorsi, em coelhos da raça Nova Zelândia, pela análise de covariância usando modelos mistos. Foram realizadas análises em delineamento em blocos completos ao acaso, com cinco tratamentos (operadores) e seis blocos (animais), considerando na análise: a
Arq. Bras. Med. Vet. Zootec.. Publicado em: 06/06/2019
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3. Numerical Studies of Penetration in Light Armor, Concrete and Brick-Wall Targets
ABSTRACT The accurate numerical simulation of projectile penetration process is a complex challenge. Experimental investigation of these time-dependent non-linear events is expensive and time-consuming. In this paper, 3-D numerical simulations are carried out to estimate the penetration performance of designed penetrators against the double and triple brick-
Matéria (Rio J.). Publicado em: 18/10/2018
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4. Bohnenblust-Hille inequalities: analytical and computational aspects
Abstract The Bohnenblust-Hille polynomial and multilinear inequalities were proved in 1931 and the determination of exact values of their constants is still an open and challenging problem, pursued by various authors. The present paper briefly surveys recent attempts to attack/solve this problem; it also presents new results, like connections with classical
An. Acad. Bras. Ciênc.. Publicado em: 01/02/2018
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5. Efficiency Comparison of Bus Operators in Delhi
There is an apparent inefficiency in the workings of the primary bus operators in New Delhi. The paper focuses on labor inefficiency and compares the compensation schemes offered to the conductors of the two major bus operators in Delhi- Delhi Transport Corporation (DTC) and Delhi Integrated Multi-Modal Transit System (DIMTS). Such a study which compares the
J. Transp. Lit.. Publicado em: 2015-01
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6. Comparison between 3D volumetric rendering and multiplanar slices on the reliability of linear measurements on CBCT images: an in vitro study
OBJECTIVE: The purpose of this study was to determine the accuracy and reliability of two methods of measurements of linear distances (multiplanar 2D and tridimensional reconstruction 3D) obtained from cone-beam computed tomography (CBCT) with different voxel sizes. MATERIAL AND METHODS: Ten dry human mandibles were scanned at voxel sizes of 0.2 and 0.4 mm.
J. Appl. Oral Sci.. Publicado em: 04/07/2014
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7. SOLUÇÕES FUNDAMENTAIS DE OPERADORES LINEARES DE COEFICIENTES CONSTANTES / FUNDAMENTAL SOLUTIONS OF LINEAR OPERATORS CONSTANT COEFFICIENTS
Nessa dissertação apresentamos uma demonstração do Teorema de Malgrange-Ehrenpreis, que arma que todo operador de coecientes constantes não identicamente nulo tem uma solução fundamental.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012
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8. Precisão e acurácia de medidas lineares da mandíbula em imagens 3D obtidas por meio da tomografia computadorizada de feixe cônico / Accuracy and reliability of mandibular linear measurements on 3D CBCT images with different voxel sizes
Objective: The purpose of this study was to determine the accuracy and reliability of mandibular linear measurements obtained from 3-dimensional cone-beam computed tomography (CBCT) scans of dry human mandibles using different voxel sizes. Methods: Ten dry human mandibles were scanned at voxel sizes of 0.2 and 0.4 mm. Craniometric anatomical landmarks were i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2011
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9. O Teorema de Bohnenblust-Hille
O Teorema de Bohnenblust-Hille, demonstrado em 1931 no prestigioso jornal Annals of Mathematics, garante que para toda forma n-linear U : lN 1 lN 1 ! K e para qualquer inteiro positivo N, tem-se 0@ N X i1;:::;in=1 jU(ei1 ; :::; ein)j 2n n+11A n+1 2n Cn kUk , onde Cn = n n+1 2n 2 n1 2 . Após um longo tempo esquecido, esse resu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/07/2011
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10. Cotipo e Operadores Lineares Absolutamente Somantes
In this work we investigate, in detail, recent research works related to the theory of absolutely summing operators between Banach spaces. More precisely, we investigate the connection between the concept of cotype and coincidence results in the theory of absolutely summing operators.
Publicado em: 2010
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11. Lineabilidade do conjunto dos operadores lineares limitados não absolutamente somantes
In this work we present some results involving lineability and the linear theory of absolutely summing operators. We note that the technique presented is closely related to the theory of hereditarily indecomposable Banach spaces and that the presence of an unconditional basis in one of the spaces involved is crucial to guarantee some results.
Publicado em: 2010
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12. Estabilidade e controle com criterio de custo medio a longo prazo em sistemas lineares estocasticos / Stability and control of linear stochastic systems with long-run average cost criterion
This monograph presents results on stability and control of stochastic systems represented by linear operators with respect to the state which are non-linear with respect to the control. The control seeks to optimize a long run average cost (LRAC). The control structure does not depend on the past history of the process and it can be used, in particular, to
Publicado em: 2009