Normalized Algorithms
Mostrando 1-12 de 19 artigos, teses e dissertações.
-
1. An automatic gain control circuit to improve ECG acquisition
Abstract Introduction Long-term electrocardiogram (ECG) recordings are widely employed to assist the diagnosis of cardiac and sleep disorders. However, variability of ECG amplitude during the recordings hampers the detection of QRS complexes by algorithms. This work presents a simple electronic circuit to automatically normalize the ECG amplitude, improving
Res. Biomed. Eng.. Publicado em: 30/11/2017
-
2. Estimation Uncertainties in the Optical Signal-to-Noise Ratio Network Optimization
In this work, we investigate the effects of estimation uncertainties in the optimization of the optical signal-to-noise ratio (OSNR) at the wavelength division multiplexing (WDM) optical networks. The OSNR optimization increases the network throughput and energy efficiency and it enables to minimize the number of retransmissions by higher layers. The OSNR op
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-03
-
3. Growth Characteristics Modeling of Mixed Culture of Bifidobacterium bifidum and Lactobacillus acidophilus using Response Surface Methodology and Artificial Neural Network
Different culture conditions viz. additional carbon and nitrogen content, inoculum size and age, temperature and pH of the mixed culture of Bifidobacterium bifidum and Lactobacillus acidophilus were optimized using response surface methodology (RSM) and artificial neural network (ANN). Kinetic growth models were fitted for the cultivations using a Fractional
Braz. arch. biol. technol.. Publicado em: 2014-12
-
4. Growth characteristics modeling of Lactobacillus acidophilus using RSM and ANN
The culture conditions viz. additional carbon and nitrogen content, inoculum size, age, temperature and pH of Lactobacillus acidophilus were optimized using response surface methodology (RSM) and artificial neural network (ANN). Kinetic growth models were fitted to cultivations from a Box-Behnken Design (BBD) design experiments for different variables. This
Braz. arch. biol. technol.. Publicado em: 2014-02
-
5. Combinação afim de algoritmos adaptativos. / Affine combination of adaptive algorithms.
In order to improve the performance of adaptive filters, the combination of algorithms is receiving much attention in the literature. This method combines linearly the outputs of two filters operating in parallel with different step-sizes to obtain an adaptive filter with fast convergence and reduced excess mean squared error (EMSE). In this context, it was
Publicado em: 2009
-
6. Monitoração e localização de defeitos na soldagem TIG utilizando técnicas de espectrometria
There is an effort made by industries to improve product quality and production methods, and to decrease the production costs. Welding is one of these processes. There are several studies about controlling or monitoring the welding process. This work presents a on-line non-intrusive monitoring system capable of detecting TIG weld defects. In this way, inspec
Publicado em: 2008
-
7. Estimação de posição e quantificação de erro utilizando geometria epipolar entre imagens. / Position estimation and error quantification using epipolar geometry between images.
Position estimation is the direct result of scene reconstruction, one of computer visions fields. It is also an important information for the control of mechanical systems - specially the autonomous robotic systems. As an engineering application, those systemsperformance must be evaluated in terms of efficiency and effectiveness, measured by processing costs
Publicado em: 2007
-
8. Aplicación de transductores de estado-finito a los procesos de unificación de términos
An approach based on techniques of state-finite has applied to the processes of unification of terms in Spanish. The algorithms of conflation are computational procedures utilized in some Information Retrieval (RI) systems for the unification of term variants, semantically equivalent, to a normalized form. The programs that carry out habitually this process
Ciência da Informação. Publicado em: 2006-12
-
9. EqualizaÃÃo adaptativa e autodidata de canais lineares e nÃo-lineares utilizando o algoritmo do mÃdulo constante / Autodidact and adaptive equalization of the nonlinear and linear channels using the constant module algorithm
Este trabalho trata da proposiÃÃo de algoritmos para equalizaÃÃo cega de canais lineares e nÃao-lineares inspirados no Algoritmo do MÃdulo Constante (CMA). O CMA funciona de maneira bastante eficiente com constelaÃÃes nas quais todos os pontos possuem a mesma amplitude, como em modulaÃÃes do tipo Phase Shift Keying (PSK). Entretanto, quando os pont
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2005
-
10. Self-tuned vehicle parameters detection and estimation from vÃdeo sequences for traffic incident management.
This work proposes and compares three algorithms for vehicle detection, composed of two main stages, preprocess and process. The first will proceed with the selection of the region of interest (ROI) and the background learning phase. The ROI is a narrow and transversal-to-lane rectangular area wherein detection is achieved, its dimensions provides low proces
Publicado em: 2005
-
11. Estimativa dos componentes do balanço radiativo à superfície mediante satélites meteorológicos / Estimation of components the budget radiation surface by using meteorological satellites
The budget between incoming radiation surface and outgoing is called Budget Radiation Surface (BRS). Conventional methods of measure of this budget are prompt and therefore representative of small areas, while that the meteorological satellites allow to all have a regular covering of the globe. This thesis has as objective basic to analyze methods of estimat
Publicado em: 2004
-
12. Estimação estatica de estado em sistemas de energia eletrica utilizando fatoração ortogonal QR
This work is concerned with computational aspects of the problem of static state estimation and bad data processing, in electrical power systems, using the nonlinear weighted least-squares technique. Modified Newton type methods, for solution of the nonlinear least-squares problem, are briefly presented and analysed. For solution of the sequence of linear le
Publicado em: 1994