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Previous issue date: 2010-08-13 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This paper proposes a method based on the theory of electromagnetic waves reflected to evaluate the behavior of these waves and the level of attenuation caused in bone tissue. For this, it was proposed the construction of two antennas in microstrip structure with resonance frequency at 2.44 GHz The problem becomes relevant because of the diseases osteometabolic reach a large portion of the population, men and women. With this method, the signal is classified into two groups: tissue mass with bony tissues with normal or low bone mass. For this, techniques of feature extraction (Wavelet Transform) and pattern recognition (KNN and ANN) were used. The tests were performed on bovine bone and tissue with chemicals, the methodology and results are described in the work / Este trabalho prop?e um m?todo baseado na teoria das ondas
eletromagn?ticas refletidas para avaliar o comportamento dessas ondas e o
n?vel de atenua??o provocada no tecido ?sseo. Para isto, foi proposta a
confec??o de duas antenas em estrutura de microfita com freq??ncia de
resson?ncia em 2.44 GHz. O problema torna-se relevante pelo fato das
doen?as Osteometab?licas atingirem uma grande parcela da popula??o, entre
homens e mulheres. Com esse m?todo, classifica-se os sinais em dois grupos:
tecido com massa ossea normal ou tecidos com baixa massa ?ssea. Para isto,
t?cnicas de extra??o de caracter?sticas (Transformada Wavelet) e de
reconhecimento de padr?es (KNN e RNA) foram usados. Os testes foram
realizados em tecido osso bovino e com elementos qu?micos, a metodologia
aplicada e resultados obtidos s?o descritos no trabalho
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15330 |
| Date | 13 August 2010 |
| Creators | Barros, Jannayna Domingues |
| Contributors | CPF:70399727434, http://lattes.cnpq.br/6122570451445215, Farias, Robson Fernandes de, CPF:59668741404, http://lattes.cnpq.br/6868773742105583, Gomes Neto, Alfr?do, CPF:33312079420, http://lattes.cnpq.br/1403715441701958, Silva, Cl?udio Rodrigues Muniz da, CPF:46533435434, http://lattes.cnpq.br/6968371254983355, Oliveira J?nior, Jos? Josemar de, Silva, Sandro Gon?alves da |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia El?trica, UFRN, BR, Automa??o e Sistemas; Engenharia de Computa??o; Telecomunica??es |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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