Analysis Of Time Series Simulation Methods
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Análise de sistemas complexos de drenagem urbana. / Urban drainage complex systems analysis.
This thesis aims to analyze urban drainage complex systems in order to define a technique for the design of detention ponds structures. In this study, Urban Drainage Complex Systems are those composed of several detention ponds, distributed in a network of channels formed by various reaches. This type of system is typical in megacities. The design of the res
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2012
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2. Sistemas complexos, séries temporais e previsibilidade / Complex systems, time series and predictability
Para qualquer sistema observado, físico ou qualquer outro, geralmente se deseja fazer predições para sua evolução futura. Algumas vezes, muito pouco é conhecido sobre o sistema. Se uma série temporal é a única fonte de informação no sistema, predições de valores futuros da série requer uma modelagem da lei da dinâmica do sistema, talvez não l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/02/2011
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3. O uso de quase U-estatísticas para séries temporais uni e multivaridas / The use of quasi U-statistics for univariate and multivariate time series
Classifcation and clustering of time series are problems widely explored in the current literature. Many techniques are presented to solve these problems. However, the necessary restrictions in general, make the procedures specific and applicable only to a certain class of time series. Moreover, many of these approaches are empirical. We present methods for
Publicado em: 2011
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4. Modelos de séries temporais com coeficientes variando no tempo
In this work they are presented extensions of Auto Regressive and Auto Regressive Conditional Heteroscedasticity models with coefficients varying in time. These coefficients have been used as models for non stationary real time series, specially for financial series. The objective of this work is to present the models and the techniques involved in estimatin
Publicado em: 2009
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5. Sistema automÃtico para anÃlise de variabilidade da freqÃencia cardÃaca / Automatic system for analysis of heart rate variability
This dissertation describes a system for analysis of heart rate variability through metrics on time and frequency domain and by non-linear methodology, which is initiated by the process of segmentation of the QRS complex of the electrocardiogram signal. The motivation for this work is the analysis of the influence from the algorithms of beat segmentation and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/10/2008
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6. Validation of heat fluxes over the tropical atlantic: CPTEC coupled ocean-atmosphere model and observations / Validação dos fluxos de calor sobre o atlântico tropical: modelo acoplado oceano-atmosfera do CPTEC e observações
The goal of this work is to infer the importance of surface heat fluxes, estimated by several methods, in the determination of the Sea Surface Temperature (SST) fields in the tropical Atlantic using a set of general circulation ocean model Modular Ocean Model 3 (MOM 3) simulations and a Centro de Previsão de Tempo e Estudos Climáticos (CPTEC) coupled ocean
Publicado em: 2005
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7. cellular networks; Mobile networks / Controle de admissÃo de chamas e reserva de recursos em redes mÃveis celulares
Handoff in wireless/mobile networks is the mechanism that transfers an ongoing call from the current cell as the mobile station moves through the coverage area of the system. User applications may experience performance degradation due to handoffs from user mobility. If the target cell does not have sufficient available bandwidth, the call will be dropped. F
Publicado em: 2004
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8. Uso da tecnologia GPS na monitoração de deformação: sistemas, etapas e experimentos. / Use of GPS technology in the deformation monitoring: systems, stages and experiments.
To understand strain and monitoring methods is essential in the prevention of accidents and in the maintenance of works of civil engineering. GPS has been increasingly becoming a powerful technology in the control of strains of structures. The aim of this research is to determine parameters for analysis of the behavior of a structure, by using simulation mod
Publicado em: 2001
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9. Propagação de danos no modelo de ising em redes de bravais e em fractais
In this work we have studied, by Monte Carlo computer simulation, several properties that characterize the damage spreading in the Ising model, defined in Bravais lattices (the square and the triangular lattices) and in the Sierpinski Gasket. First, we investigated the antiferromagnetic model in the triangular lattice with uniform magnetic field, by Glauber
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/1999