Discrete Dynamical System
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. A DISCRETE DYNAMICAL SYSTEM AND ITS APPLICATIONS
ABSTRACT The main goal of this manuscript is to introduce a discrete dynamical system defined by symmetric matrices and a real parameter. By construction, we rediscovery the Power Iteration Method from the Projected Gradient Method. Convergence of the discrete dynamical system solution is established. Finally, we consider two applications, the first one cons
Pesqui. Oper.. Publicado em: 02/12/2019
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2. HIGHLY-ACCURATE MODEL ORDER REDUCTION TECHNIQUE ON A DISCRETE DOMAIN
Abstract In this work, we present a highly-accurate technique of model order reduction applied to staged processes. The proposed method reduces the dimension of the original system based on null values of moment-weighted sums of heat and mass balance residuals on real stages. To compute these sums of weighted residuals, a discrete form of Gauss-Lobatto quadr
Braz. J. Chem. Eng.. Publicado em: 2015-09
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3. Uma abordagem de compressão de imagens através de sistemas de funções iteradas
A new image compression technique is proposed, based on the affine transformations (ATs) that define an iterated function system (IFS). Previous related research in the field has shown that an image may be approximated by iteratively subjecting a set of sub-regions to a group of ATs. In this case, the original image should be partitioned in regions, and each
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2011
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4. Técnicas de processamento não linear de sinais aplicadas à investigação de limitações práticas do procedimento de ventilação mecânica não invasiva
Individuals with respiratory system dysfunctions or who are recovering from complex surgeries may have difficulty to sustain spontaneous breathing. The mechanical ventilation is a clinical procedure that supports ventilation until the patient is recovered. Noninvasive mechanical ventilation is especially remarkable as it can be used outside the hospital, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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5. Local stabilization of discrete-time linear systems with saturating controls : an LMI-Based approach
This note deals with the problem of local stabilization of linear discrete-time systems subject to control saturation.Alinear matrix inequalitie- based framework is proposed in order to compute a saturating state feedback that stabilizes the system with respect to a given set of admissible initial states and, in addition, guarantees some dynamical performanc
Publicado em: 2011
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6. Efeitos causados pela modulação de parâmetros no mapa de hénon / Effects caused by the parameters modulation in the hénon map
The Hénon map is a paradigmatic two-dimensional discrete-time dynamical system, which was originally proposed as a model to the Poincaré section of the continuous-time Lorenz system, and has been extensively investigated in the last years. Apart from its theoretical importance, some practical applications are possible. As an example, it can be used to mode
Publicado em: 2011
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7. Sistemas dinâmicos discretos lineares
This work studies finite dynamical systems. These are deterministic dynamical systems, with discrete time and a finite number of possible states. We focus on linear finite dynamical system (LFDS). This is a rather successful case. It can be reduced to essentially two basic subcases: bijective and nilpotent. The reduction uses tools from linear algebra, mainl
Publicado em: 2010
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8. Classical and quantum correlations under decoherence / Correlações clássicas e quânticas sob decoerência
Recently, in the context of discrete variables, the existence of quantum correlations that are more general than entanglement was identified. We may conjecture that these correlations are a very important resource in quantum information science and in some areas of physics. However, this fragile resource is quickly destroyed by the decoherence process. In th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2009
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9. Comparison of different identification techniques of vertical structural dynamics of twin-wheeled telescopic landing gear.
The main purpose of this work is to model dynamically the latero-torsional response of the structure of a landing gear using identification techniques. The emphasis is placed on identifying this motion on aircraft twin-wheeled telescopic main landing gears. Between the many possible model structures, a linear polynomial ARX and ARMAX model structures and a s
Publicado em: 2009
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10. Algumas propriedades de autômatos celulares unidimensionais conservativos e reversíveis
Autômatos celulares (ACs) podem ser definidos como sistemas dinâmicos sobre redes ndimensionais de componentes localmente conectados, cuja evolução ocorre de forma discreta, síncrona e homogênea. Dentre suas diversas aplicações, têm sido utilizados como ferramenta para modelagem de sistemas complexos regidos por leis fundamentais de conservação (a
Publicado em: 2009
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11. Estabilidade dinâmica para sistemas quânticos dependentes do tempo.
We study if a time-dependent system is either dynamically stable or unstable, i.e., if the expected value of a positive and discrete observable is a bounded function of time or not. Initially we consider topological properties of the orbits of the states of the system and how these properties are related to dynamical stability. In the case of periodic time d
Publicado em: 2006
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12. Desenvolvimento de ferramentas de identificação parametrica de sistemas mecanicos no dominio do tempo
The Work presents a collection of parametric and non parametric time domain identification techniques, employed in the modal analysis of a mechanical system. The dynamical behaviour of the system is studied from a linear model of the same, built from discrete parameters. The main characteristic of the work is the employment of computational techniques of lin
Publicado em: 1993