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Um modelo genérico para fluxos em estruturas auto-similares e a sua relação com espectros afins: da geometria da árvore brônquica às características dos sons pulmonares.
A generic model for flows in self-similar strutuctures and its relation with affine spectra: from the bronchial tree geometry to the spectral characteristics of the lung sounds
dc.contributor.advisor | Oliveira, Luiz Paulo Luna de | |
dc.contributor.author | Faistauer, Daniel | pt_BR |
dc.date.accessioned | 2015-03-05T13:53:44Z | |
dc.date.accessioned | 2022-09-22T19:05:07Z | |
dc.date.available | 2015-03-05T13:53:44Z | |
dc.date.available | 2022-09-22T19:05:07Z | |
dc.date.issued | 2004-02-20 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12032/56741 | |
dc.description.abstract | In this work, a theoretical scheme is considered for normal lung sound pro- duction in high frequencies. This scheme is based on multi-scaled _ux discretiza- tion into independent discrete elements, which interact with the geometric struc- ture that represents the bronchial tree in a syntonized fashion. The resulting amplitude spectrum is a_ne in a log-log scale with slope dependence on the frac- tal dimension of the bronchial tree. The results from a theoretical analysis of this scheme is compatible, qualitatively and quantitatively with the spectral characte- ristics reported in the literature. Furthermore, a computational and simulational model is realized starting from the theoretical scheme. Moreover, the computational model extends the the- oretical scheme introducing interactions among the discrete elements by potentials. These interactions yield a more precise adjustment of the spectra in low frequency as well as in the high frequency spectral region. Finally, a sound synthesis method is | en |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | pt_BR |
dc.language | pt_BR | pt_BR |
dc.publisher | Universidade do Vale do Rio do Sinos | pt_BR |
dc.rights | openAccess | pt_BR |
dc.subject | simulação computacional | pt_BR |
dc.subject | simulation | en |
dc.title | Um modelo genérico para fluxos em estruturas auto-similares e a sua relação com espectros afins: da geometria da árvore brônquica às características dos sons pulmonares. | pt_BR |
dc.title | A generic model for flows in self-similar strutuctures and its relation with affine spectra: from the bronchial tree geometry to the spectral characteristics of the lung sounds | en |
dc.type | Dissertação | pt_BR |
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dissert Faistauer.pdf | 1.331Mb | application/pdf | Ver/ |