Simultaneous Equations
Mostrando 1-12 de 66 artigos, teses e dissertações.
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1. Financial constraints and the interdependence of corporate financial decisions
Abstract Purpose This paper aims to examine the interdependence of financial decisions (investment, financing, dividends and cash-holding) under financial constraints. Design/methodology/approach The authors specify and estimate a system of simultaneous equations with panel data and firm fixed effects by three-stage least squares in a sample of firms from
RAUSP Manag. J.. Publicado em: 2020-09
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2. O equilíbrio e a estrutura estelar em uma abordagem simples: a Seqüência Principal
Resumo As condições simultâneas de equilíbrio Virial e equilíbrio hidrostático determinam a existência de soluções para os modelos estelares mais simples. Utilizando estes dois conceitos mostramos que é possível caracterizar a estrutura estelar sem recorrer à integração de equações diferenciais, ao menos para obter as propriedades globais. Al
Rev. Bras. Ensino Fís.. Publicado em: 13/06/2019
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3. Simultaneous Equations to Estimate Aboveground Biomass of Pinus caribaea var . hondurensis
ABSTRACT This study aimed to develop equations to predict the biomass of trunks, branches, needles and total individual biomass for Pinus caribaea var. hondurensis . A simultaneous equation system was also adjusted. Twenty (20) trees from the experimental area of the State University of Southwest Bahia (UESB), Vitória da Conquista, Bahia, Brazil, were meas
Floresta Ambient.. Publicado em: 26/07/2018
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4. Simultaneous prestack seismic inversion in a carbonate reservoir
Abstract We applied a method of Simultaneous Prestack Seismic Inversion (SPSI) in a hydrocarbon field located in the Campos Basin, Brazil. The goal was to study the application of this method to Albian carbonate rocks of the Quissamã Formation. Based on what is found in nearby fields, this Formation potentially contains hydrocarbon accumulations that can be
REM, Int. Eng. J.. Publicado em: 2018-03
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5. Spectral Method for Localization of Multiple Partial Discharges in Dielectric Insulation of Hydro-Generator Coils: Simulation and Experimental Results
Abstract A methodology based on spectral analysis for localization of multiple partial discharges in dielectric region of hydro-generator coils is proposed. This pinpointing of multiple discharges aims to provide means for performing diagnosis of insulating regions of the coil. A numerical model of the structure was developed by using the finite-difference t
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-09
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6. Do the Board of Directors Composition and the Board Interlocking Influence on Performance?
Abstract This study analyzes the influence of composition of the Board of Directors and their social relations (board interlocking) on performance of Brazilian companies. A descriptive study based on documentary research was conducted with a total of 1,163 companies' observations and 18,119 standardized observations regarding directors. Simultaneous equation
BAR, Braz. Adm. Rev.. Publicado em: 07/07/2016
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7. Novel Layerwise Shear Correction Factors for Zigzag Theories of Circular Sandwich Plates with Functionally Graded Layers
AbstractThe available shear correction factors have mainly been proposed for single-layer rectangular plates with zero shear tractions and isotropic homogenous materials. The present analytical shear factors are especially suitable for the first-order zigzag or layerwise theories of circular sandwich plates with functionally graded cores/face sheets and simu
Lat. Am. j. solids struct.. Publicado em: 2015-07
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8. Análise da convecção forçada no escoamento bidimensional laminar em dutos retangulares via GITT com variáveis primitivas. / Analysis of forced convection in two-dimensional laminar flow in rectangular ducts with via gitt primitive variables.
In the present study, forced convection flow in two-dimensional laminar simultaneous development pipeline with rectangular geometry, is analyzed analytically using the Navier-Stokes, Poisson and Energy in its primitive form. These equations are solved by the Generalized Integral Transform Technique, which is characteristic hybrid-numeric. The development wor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2012
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9. Usable work of macro-scale cavities in liquids
It is shown that the generation of cavities in a liquid can produce usable work, which is illustrated by the stretching of a string. This work is done during the expansion of the cavity, and not with its collapse. Basic equations are presented for the movement of a device moved by the so called cavity events. A theoretical solution is also proposed, which us
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-12
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10. Desempenho da firma e práticas de governança corporativa: um modelo de equações simultâneas / Firm performance and corporate governance: a simultaneous equations model
The objective of this study is to analyze the relationship between corporate governance practices and performance of 370 Brazilian companies traded in the period of 1997 to 2007. The used data base was created from extracted data of Informative Annual reports (IAN), provided by Comissão de Valores Mobiliários (CVM) and by the data base of Economática®. T
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2011
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11. Equações simultâneas no contexto clássico e bayesiano : uma abordagem à produção de soja.
Nos últimos anos tem aumentado a quantidade de pesquisadores e pesquisas científicas na plantação, produção e valor de soja no Brasil, em grão. Diante disso, a presente dissertação busca analisar os dados e ajustar modelos que expliquem, de forma satisfatória, a variabilidade observada da quantidade produzida e valor da produção de soja em grão
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2011
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12. Solution of porous media inverse drying problems using a combination of stochastic and deterministic methods
In the present work the inverse problem of simultaneous heat and mass transfer modeled by Luikov equations is studied using a hybrid combination of the Levenberg-Marquardt (LM), Simulated Annealing (SA) and Artificial Neural Network (ANN) methods. The direct and inverse problems are described, formulated and solved. After the use of an experiment design tech
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12