Theory Of Approximation
Mostrando 1-12 de 194 artigos, teses e dissertações.
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1. Two-dimensional beams in rectangular coordinates using the radial point interpolation method
Abstract The three-dimensional Theory of Elasticity equations lead to a complex solution for most problems in engineering. Therefore, the solutions are typically developed for reduced systems, usually symmetrical or two-dimensional. In this context, computational resources allow the reduction of these simplifications. The most recognized methods of algebraic
REM, Int. Eng. J.. Publicado em: 2020-03
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2. A noção de Semblante em Jacques Lacan: contribuição às identidades contemporâneas
Pretendemos trabalhar a noção de semblante em sua inserção no ensino e campo lacanianos. Sob essa consigna, procuramos compor um balanceamento crítico do conceito - procurando estruturá-lo nem como puro imaginário nem enquanto termo acessório na composição das fórmulas da sexuação. Para tanto, adentramos em debates contemporâneos sobre as ident
Rev. latinoam. psicopatol. fundam.. Publicado em: 17/01/2020
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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. DELINEATION OF HOMOGENEOUS ZONES BASED ON GEOSTATISTICAL MODELS ROBUST TO OUTLIERS
RESUMO Diversas pesquisas utilizam medidas de condutividade elétrica aparente do solo (CEa) como indicador da variabilidade espacial de atributos físico-químicos existentes no campo de produção. Com base nestas medidas, zonas de manejo (ZM) são delineadas para aperfeiçoamento da gestão agrícola. Entretanto, estas amostras têm apresentado presença
Rev. Caatinga. Publicado em: 18/07/2019
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5. Organizações Outras: Diálogos Entre a Teoria da Prática e a Abordagem Decolonial de Dussel
Resumo O objetivo deste ensaio é propor um alinhamento teórico possível entre o aporte dos estudos decoloniais latino-americanos - com ênfase no trabalho de Enrique Dussel - e a abordagem teórico-metodológica da teoria da prática, partindo de um entendimento específico do debate centro/periferia para adentrar a forma de capturar as organizações em
Rev. adm. contemp.. Publicado em: 18/04/2019
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6. Estudio Ab-initio de propiedades estructurales, elásticas y electrónicas de nanohilos core/shell
ABSTRACT This Zinc oxide (ZnO) is widely used in different electronic devices due to its thermal, electronic, and piro-piezoelectric properties. Some of these properties are noticeable improvement at the nanoscale, specially when ZnO together with other material create heterostructures. Recently, core/shell nanowires have been synthesized in order to raise t
Matéria (Rio J.). Publicado em: 19/07/2018
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7. Improved Electronic Structure and Optical Performance of Bi2Te3-xSex From First-principle Calculations Within TB-mBJ Exchange Potential
Using the first-principle calculations of density functional theory within the (FP-LAPW) method, we have investigated the structural, electronic and optical properties of Bi2Te3-xSex alloys with compositions x = 0, 1, 2 and 3 of Se. The generalized gradient approximation functional of Wu and Cohen (GGA-PBE) is used to calculate ground state structural parame
Mat. Res.. Publicado em: 17/11/2017
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8. HIGH PRESSURE BEHAVIOR OF CRYSTALLINE DIHYDROXYLAMMONIUM 5,5'-BISTETRAZOLE-1,1'-DIOLATE: FIRST-PRINCIPLES STUDY
Density functional theory (DFT) periodic calculations were performed to study the geometrical and electronic structures of energetic compound dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) under the pressure ranging from 0 to 400 GPa. The optimized crystal structure by the local density approximation (LDA) with CA-PZ functional matches well with
Quím. Nova. Publicado em: 2017-10
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9. Psychological model of ART adherence behaviors in persons living with HIV/AIDS in Mexico: a structural equation analysis
ABSTRACT OBJECTIVE The objective of this study has been to test the ability of variables of a psychological model to predict antiretroviral therapy medication adherence behavior. METHODS We have conducted a cross-sectional study among 172 persons living with HIV/AIDS (PLWHA), who completed four self-administered assessments: 1) the Psychological Variable
Rev. Saúde Pública. Publicado em: 04/09/2017
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10. Analysis of Geometrically Nonlinear Vibrations of Functionally Graded Shallow Shells of a Complex Shape
Abstract Geometrically nonlinear vibrations of functionally graded shallow shells of complex planform are studied. The paper deals with a power-law distribution of the volume fraction of ceramics and metal through the thickness. The analysis is performed with the use of the R-functions theory and variational Ritz method. Moreover, the Bubnov-Galerkin and the
Lat. Am. j. solids struct.. Publicado em: 2017-09
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11. Vibration Analysis of Rotating Functionally Graded Cylindrical Shells with Orthogonal Stiffeners
Abstract In this paper, free vibration analysis of rotating functionally graded cylindrical shells with orthogonal stiffeners is presented. Based on Love's first approximation theory and smeared stiffeners technique, the governing equations of motion which take into account the effects of initial hoop tension and also the centrifugal and Coriolis forces due
Lat. Am. j. solids struct.. Publicado em: 2016-12
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12. New Design Procedure to Determine the Taper Transition for Impedance Matching Between Microstrip Line and SIW Component
Abstract Normally the physical dimensions of the taper transition that realizes the impedance matching between the impedance of the feeding line built in microstrip line technology and the impedance of the component built in Substrate Integrated Waveguide (SIW) technology are obtained by computational optimization processes due the difficulty of analytical t
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-09