Artificial Noses
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Comparação estatística de performance de métodos de redes neurais para sistema de olfação biológica.
One of the human senses that has several aspects get to be elucidated is the olfactory sense. Therefore, many scientists have been studying this sense in order to better understand how does the information processing happens until the brain recognize it. There were lots of theories regarding olfactory system functioning, in which its authors try to explain h
Publicado em: 2007
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2. Aplicação de análises estatística e neural para reconhecimento de sinais de odores
This work investigates the use of an electronic nose prototype for prognosis of Diabetes Mellitus. The work involves five main parts: (1) building of odors database by aroma sensors; (2) an evaluation of the odors database through multivariate statistics techniques;(3) use of Multilayer Perceptron (MLP) and Radial Basis Function (RBF) Artificial Neural Netwo
Publicado em: 2007
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3. Optimization methods for the definition of MLP neural network architectures and weights / Optimization methods for the definition of MLP neural network architectures and weights / MÃtodos de otimizaÃÃo para definiÃÃo de arquiteturas e pesos de redes neurais MLP / MÃtodos de otimizaÃÃo para definiÃÃo de arquiteturas e pesos de redes neurais MLP
This dissertation proposes modifications in the Yamazaki method for the simultaneous optimization of Multilayer Perceptron (MLP) network weights and architectures. The main objective is to propose a set of modifications with respective validations aimed at creating a more efficient optimization process. The optimization hybrid algorithm is based on the simul
Publicado em: 2005
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4. Sistema neural hÃbrido para reconhecimento de padrÃes em um nariz artificial / Hybrid neural system forpattern recognition in an artificial nose
This dissertation investigates the use of Hybrid Intelligent Systems in the pattern recognition system of an artificial nose. The work involves five main parts: (1) an evaluation of the odors database by a multivariate statistics technique; (2) a validation of the Time Delay Neural Networks in the odors recognition; (3) an evaluation of the Wavelet Transform
Publicado em: 2004
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5. Comparing arquitecture of neural networks for pattern ecognation system on artificial noses / ComparaÃÃo de arquiteturas de redes neurais para sistemas de reconhecimento de padrÃes em narizes artificiais
Um nariz artificial à um sistema modular composto de duas partes principais: um sistema sensor, formado de elementos que detectam odores e um sistema de reconhecimento de padrÃes que classifica os odores detectados. Redes neurais artificiais tÃm sido utilizadas como sistema de reconhecimento de padrÃes para narizes artificiais e vÃm apresentando resulta
Publicado em: 2004
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6. ConstruÃÃo de um nariz artificial usando redes neurais
The animals interact with environment in several ways. The smell around them has an extremely importance in the information transport, essential for survival. Such as for the animals, the smell plays an important rule for human beings. Due to this importance, the study in the human olfactory system is very helpful and started very long time ago. Although it
Publicado em: 2000
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7. Equipment review: Mechanical effects of heat-moisture exchangers in ventilated patients
Although they represent a valuable alternative to heated humidifiers, artificial noses have unfavourable mechanical effects. Most important of these is the increase in dead space, with consequent increase in the ventilation requirement. Also, artificial noses increase the inspiratory and expiratory resistance of the apparatus, and may mildly incr
BioMed Central.