Recursive Equation
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Busca por estruturas causais no contexto de modelos mistos em genética quantitativa
Structural Equation Models (SEM) can be used to study recursive and simultaneous relationships in multivariate analyses. Nonetheless, the number of different recursive causal structures that can be used for fitting a SEM to multivariate data can be huge, even when only a few traits are considered. In recent applications of SEM in mixed model quantitative gen
Publicado em: 2010
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2. Recursive robust regulator for discrete-time state-space systems / Regulador robusto recursivo para sistemas lineares de tempo discreto no espaço de estado
This dissertation deals with robust recursive regulators for discrete-time systems subject to parametric uncertainties. A new quadratic functional based on the combination of penalty functions and game theory is proposed to solve this class of problems. An important issue of this approach is that the recursiveness can be performed without the need of adjusti
Publicado em: 2009
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3. Filtros de Kalman robustos para sistemas dinâmicos singulares em tempo discreto / Robust Kalman filters for discrete-time singular systems
This thesis considers the optimal robust estimates problem for discrete-time singular dymanic systems. New recursive algorithms are developed for the Kalman filtered and predicted estimated recursions with the corresponding Riccati equations. The singular robust Kalman type filter and the corresponding recursive Riccati equation arer obtained in their most g
Publicado em: 2009
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4. A teoria da ruína aplicada em um modelo de empresa financeira com risco de crédito
In this work we study a new risk model for a rm which is sensitive to its credit quality, proposed by Yang(2003): Are obtained recursive equations for nite time ruin probability and distribution of ruin time and Volterra type integral equation systems for ultimate ruin probability, severity of ruin and distribution of surplus before and after ruin
Publicado em: 2008
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5. MODELAGEM E SIMULAÇÃO DA DINÂMICA DE BÓIAS DE SUPERFÍCIE ANCORADAS / MODELING AND SIMULATION OF THE DYNAMIC OF SURFACE MOORED BUOYS
In this work a method for two-dimensional dynamic analysis of a cylindrical buoy under surfaced waves and moored to the seafloor by a flexible riser is presented. The finite element model used to describe the dynamics of the maritime line was developed by Lustosa (2002). This is a two node beam element based on the Euler-Bernoulli theory, with the element ki
Publicado em: 2008
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6. ESTIMAÇÃO DE HARMÔNICOS/INTER-HARMÔNICOS: UMA ABORDAGEM MULTITAXA
This dissertation discusses parameter estimation of harmonics/inter-harmonics of electrical signals under time-varying conditions. Two new suitable approaches for processing this kind of signals are proposed. The first one is based on phase error of DFT (Discrete Fourier Transform) result, occurring due to the frequency deviation of input signal. This method
Publicado em: 2008
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7. Subtractive renormalization of one-pion-exchange and contact interactions
A recursive subtractive renormalization of the scattering equation is applied to the nucleon-nucleon ¹S0 channel with one-pion-exchange plus derivative contact interactions. This method can be easily extended to any derivative order of the singular interaction. Although we limit this work to the singlet partial wave, the method can be used as well in higher
Brazilian Journal of Physics. Publicado em: 2005-09
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8. TS-TARX: TREE STRUCTURED - THRESHOLD AUTOREGRESSION WITH EXTERNAL VARIABLES / TS-TARX: UM MODELO DE REGRESSÃO COM LIMIARES BASEADO EM ÁRVORE DE DECISÃO
This research work proposes a new piecewise linear model to extract knowledge rules from databases. The model is an heuristic based on analysis of regression trees, introduced by Friedman (1979) and discussed in detail by Breiman (1984). The motivation of this research is to come up with a new approach combining both statistical modeling techniques and an ef
Publicado em: 2001
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9. DISTRIBUTED SYSTEMS IDENTIFICATION IN STOCHASTIC ENVIRONMENT / IDENTIFICAÇÃO DE SISTEMAS DISTRIBUÍDOS EM AMBIENTE ESTOCÁSTICO
This work presents a method for parametric identification of distributed systems modeled by partial differential equation operating in a stochastic environment. The present problem has already been treated by Kubrusly and Curtain in [7] where the system through a limited number of noisy sensors located in the spatial domain. Here it is presented a generaliza
Publicado em: 1978
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10. Solutions for transients in arbitrarily branching cables: I. Voltage recording with a somatic shunt.
An analytical solution is derived for voltage transients in an arbitrarily branching passive cable neurone model with a soma and somatic shunt. The response to injected currents can be represented as an infinite series of exponentially decaying components with different time constants and amplitudes. The time constants of a given model, obtained from the roo