Cubic Spline
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Two-dimensional spatial distribution modeling of sprinkler irrigation
ABSTRACT Irrigation can provide significant agronomic and financial returns on agricultural activity. The maximization of the benefits obtained from irrigation depends, among other factors, on the water use efficiency, which is intrinsically related to application uniformity. For the sprinkler method, the irrigation uniformity assessment is based on results
Rev. Ceres. Publicado em: 2021-08
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2. Water retention curve to analyze soil structure changes due to liming
Abstract: Liming can influence crop growth by altering pore geometry, pore size distribution and water retention characteristics in acid soils. The aim of this work is to determine liming effects on the soil structure based on analysis of water retention data using a cubic spline adjustment function. For that, the authors investigated the effect of three lim
An. Acad. Bras. Ciênc.. Publicado em: 03/06/2019
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3. Spline Dynamic Matrix Controller : uma nova formulação de controladores preditivos lineares
In the field of dynamic simulation, an understanding of the dynamic behavior of chemical processes is important from both process design and process system perspectives. Several methodologies have been developed so far, such as Step Response (SR), Transfer Function (TF) and Discrete State Space representation (DSS). Such approaches, however, have some disadv
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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4. Cubic-spline interpolation to estimate effects of inbreeding on milk yield in first lactation Holstein cows
Milk yield records (305d, 2X, actual milk yield) of 123,639 registered first lactation Holstein cows were used to compare linear regression (y = β0 + β1X + e) ,quadratic regression, (y = β0 + β1X + β2X2 + e) cubic regression (y = β0 + β1X + β2X2 + β3X3 + e) and fixed factor models, with cubic-spline interpolation models, for estimating the effects o
Genetics and Molecular Biology. Publicado em: 2011
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5. Utilização da transformada de características invariante a escala (SIFT) na automatização da obtenção de pontos do Sistema de Imagens Tridimensional Híbrido (SITH) / Using the scale invariant feature transform (SIFT) in the automation of getting points of the three-dimensional hybrid imaging system (SITH)
This dissertation presents an improvement of the Three-Dimensional Hybrid Imaging System (SITH) that is used to obtain a three dimensional surface relief of a particular region from the same two consecutive air frames it. Photogrammetry is the science and technology used to obtain reliable information from images acquired by sensors. Improving the automation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2010
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6. Thin-plate spline - TPS method applied on the assessment of shrinkage (épsilonr) of Eucalyptus urophylla, E. saligna e E. urograndis / Método da Thin-plate spline - TPS aplicado ao estudo das deformações específicas de retração (épsilonr) da madeira de Eucalyptus urophylla, E. saligna e E. urograndis
The present research work had the aim to contribute for the development of testing procedures and evaluation of displacements to determine shrinkage of Eucalyptus urophylla, E. saligna and a hybrid E. urograndis in the radial and tangential directions using the Thin-plate Spline TPS method. It was carried out a theoretical and practical study in order to con
Publicado em: 2010
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7. An exact approach to Brazilian yield curve estimation via hedge strategy / Estimação da curva de juros brasileira via estratégia de hedge: uma abordagem com precificação exata
O presente trabalho compara o desempenho de dois importantes métodos de interpolação da estrutura a termo da taxa de juros com precificação exata no Brasil: o cubic spline e o flat-forward. Para o primeiro foram utilizadas as variantes por preços unitários e por taxas, enquanto que para o último foram utilizadas as variantes do DI mais próximo e do
Publicado em: 2009
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8. Biomechanical analysis of spine movements in simulated hiking on sailing / Análise cinemática da dinâmica postural do tronco do velejador durante simulação da posição de escora
O objetivo principal deste estudo foi avaliar a movimentação e posicionamento da coluna vertebral do velejador durante a postura de escora. Esta pesquisa foi caracterizada como descritiva, exploratória, multicaso e a amostra foi do tipo intencional. Essa foi composta por 3 velejadores selecionados através de contatos com clubes de vela da cidade, a Feder
Publicado em: 2007
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9. A new approach for regularized image interpolation
This paper presents a non-iterative regularized inverse solution to the image interpolation problem. This solution is based on the segmentation of the image to be interpolated into overlapping blocks and the interpolation of each block, separately. The purpose of the overlapping blocks is to avoid edge effects. A global regularization parameter is used in in
Journal of the Brazilian Computer Society. Publicado em: 2006-04
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10. Analise de desempenho do sistema de TV digital DVB-T com entrelaçador temporal em canais com ruido impulsivo
The aim of this work is to study the performance of the European Terrestrial Digital TV system DVB-T, when improved with Time Interleaver similar to Japanese Terrestrial Digital TV System. We contribute with the development of a simulator named (DVBM-T) DVB Modified -T. To test the DVBM-T, two proposals of Channel Estimators (2D jointed with Cubic-Spline and
Publicado em: 2004
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11. Sobre a utilização de beta -splines no metodo dos elementos finitos para a solução de barras, vigas e placas finas / About the use of beta -splines functions in finite element method to the solution of Bar and Beam structures and Thin Plates
The present Thesis is a step by step formulation for the use of B-splines Functions in the Finite Element Method to approximate de solution of Bars, Beams and Thin Plates structures. The smooth character of the B-Splines given by the C IND. 2 continuity of these cubic polynomials provides a robust frame to the trial functions, increasing thus convergence and
Publicado em: 1999
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12. FORECASTING DAILY LOAD DATA USING STRUCTURAL MODELS AND CUBIC SPLINE / PREVISÃO DE CARGA DIÁRIA ATRAVÉS DE MODELOS ESTRUTURAIS USANDO SPLINES
Esta tese propõe um modelo para o tratamento de observações diárias e é aplicado na área do setor elétrico, no problema de previsão de carga horária. O modelo proposto é basicamente um modelo estrutural onde a sazonalidade anual (movimentos periódicos dentro do ano) é modelada utilizando a técnica de Splines. Esta té
Publicado em: 1996