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Análise espectral de Walsh-Fourier
Title
Análise espectral de Walsh-Fourier
Type
Article in International Conference Proceedings Book
Year
2002
Authors
Isabel Silva
(Author)
FEUP
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M. Eduarda da Silva
(Author)
FEP
Conference proceedings National
Pages: 367-377
IX Congresso Anual da Sociedade Portuguesa de Estatística
Ponta Delgada, 4 a 7 de Novembro de 2001
Scientific classification
FOS:
Natural sciences > Mathematics
Other information
Resumo (PT):
Em análise de séries temporais, os métodos de Fourier são utilizados
para caracterizar a variação periódica dos dados.
No caso de séries com mudanças abruptas, formas descontínuas ou
tomando valores num conjunto finito discreto, como no caso de séries
categóricas, faz mais sentido (estatístico) analisar os dados
através das funções de Walsh.
Neste trabalho, descreve-se a análise espectral de Walsh-Fourier e em
que medida a sua aplicação pode ser usada no controlo automático do bloqueio neuro-muscular.
Abstract (EN):
In time series analysis, Fourier methods are used to characterize the periodic variation in the data. When the series presents sharp discontinuities and changes of levels it is more appropriate to analyse the data using the Walsh Functions.
Here we describe Walsh-Fourier spectral analysis and we use this technique to characterize the control of the neuro-muscular blockade.
Language:
Portuguese
Type (Professor's evaluation):
Scientific
Contact:
ims@fe.up.pt
No. of pages:
11
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