Fractional Brownian Motion
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Estimação de envelope efetivo de tráfego de redes baseada em Modelagem Multifractal para controle de admissão de usuários com qualidade de serviço
Neste artigo, apresentamos uma equação de banda efetiva para tráfego multifractal baseada em modelo cascata multiplicativa. Relacionando banda efetiva e envelope efetivo, conceito este, oriundo do cálculo de rede estatístico, determinamos limitantes de desempenho fim-a-fim para tráfego multifractal de redes. A partir desses limitantes, propomos um esqu
TEMA (São Carlos). Publicado em: 04/10/2013
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2. Processamento de sinais e reconhecimento de padrões de resposta de sensores de gases através da geometria fractal. / Signal processing and pattern recognition of gas sensors response by fractal geometry.
The aim of the present work was to propose methods for signal possessing and pattern, recognition from the signals response of gas sensors using models and techniques from the fractal geometry. The data studied and analyzed were obtained from two kinds of sensors. The first sensor was the tin oxide device, which detection principle is based on the resistivit
Publicado em: 2007
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3. Identificação de sistemas "on-line", otimização e controle avançado com o filtro de Kalman estendido / On line system identification, advanced control and optimization with the (Extended) Kalman filter
In the continuing competition between it will be more and more necessary to optimize current chemical processes in real time. To be able to optimize a plant in real time, there have to be various aspects to be fulfilled, such as measurement, reliability of the measurement and prediction of the process behaviour. In this work some of the aspects of such an ad
Publicado em: 2006
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4. Constrained diffusion or immobile fraction on cell surfaces: a new interpretation.
Protein lateral mobility in cell membranes is generally measured using fluorescence photobleaching recovery (FPR). Since the development of this technique, the data have been interpreted by assuming free Brownian diffusion of cell surface receptors in two dimensions, an interpretation that requires that a subset of the diffusing species remains immobile. The
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5. Gating of acetylcholine receptor channels: Brownian motion across a broad transition state
Acetylcholine receptor channels (AChRs) are proteins that switch between stable “closed” and “open” conformations. In patch clamp recordings, diliganded AChR gating appears to be a simple, two-state reaction. However, mutagenesis studies indicate that during gating dozens of residues across the protein move asynchronously and are organized into rigid
National Academy of Sciences.
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6. Irregularity, volatility, risk, and financial market time series
The need to assess subtle, potentially exploitable changes in serial structure is paramount in the analysis of financial data. Herein, we demonstrate the utility of approximate entropy (ApEn), a model-independent measure of sequential irregularity, toward this goal, by several distinct applications. We consider both empirical data and models, including compo
National Academy of Sciences.