Complex Eigenvalue
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Contribuições para a análise de sinais neuronais e biomédicos
Following the new tendency of interdisciplinarity of modern science, a new field called neuroengineering has come to light in the last decades. After 2000, scientific journals and conferences all around the world have been created on this theme. The present work comprises three different subareas related to neuroengineering and electrical engineering: neural
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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2. Disc brake noise analysis using instability of complex eigenvalue / Instabilidade de freios a disco por analise de autovalor complexo
To understand, model and mitigate disc brake noise is still one of the greatest challenges for the automotive industry. It is substantially important for manufacturers and suppliers to predict the disc brake noise in a design phase. Squeal is a brake noise in the 1-15 kHz frequency range, and can be defined as a self-excited friction problem, which can gener
Publicado em: 2008
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3. EFFICIENCY ASSESSMENT OF ADVANCED MODAL ANALYSIS AS COMPARED TO TECHNIQUES BASED ON NUMERICAL INVERSE TRANSFORMS / COMPARAÇÃO DO DESEMPENHO COMPUTACIONAL DA TÉCNICA DE SUPERPOSIÇÃO MODAL AVANÇADA COM TÉCNICAS DA TRANSFORMADA DE LAPLACE
An established technique to solve time-dependent problems is the formulation of a complete frequency-domain analysis via Laplace or Fourier transforms, with subsequent ad hoc expression of results by numerical inversion. Although usually easy to implement, such a transform inversion is computationally intensive, if accurate results are desired, and liable to
Publicado em: 2008
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4. ANÁLISE DE ESTABILIDADE DE ESCOAMENTOS VISCOSOS E VISCOELÁSTICOS / LINEAR STABILITY ANALYSIS OF VISCOUS AND VISCOELASTIC FLOWS
Steady state,two-dimensional flows may become unstable under two and three-dimensional disturbances, if the flow parameters exceed some critical values. In many practical situations, determining the parameters at which the flow becomes unstable is essential. The complete understanding of viscous and viscoelastic flows requires not only the steady state solut
Publicado em: 2007
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5. Desenvolvimento e aplicação de metodos quimiometricos de ordem superior
Two of the multi-way methods presented in this work were developed in psychometrics for psychological studies. On being applied in chemical data these methods demand on refinements to accommodate the variation present in the chemical data. Although the development of such kind of refinements there are some variation within the data which cannot be described
Publicado em: 2002
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6. Sistemas lineares sujeitos a restrições : regulação robusta e alocação regional parcial de polos
Using the theory of positively invariant polyhedral sets, the problem of robust regulation of uncertain linear continuous-time systems, considering symmetrical constraints on the state and control vectors and uncertain domain defined by intervals of A and B matrices, is studied. For computacional solution of this problem, an efficient linear programming appr
Publicado em: 1994
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7. ON THE STRUCTURED ROBUST STABILIZATION OF LINEAR SYSTEMS: A REVIEW AND FURTHER RESULTS / RESULTADOS ADICIONAIS SOBRE ESTABILIZAÇÃO ROBUSTA ESTRUTURADA
This thesis presents a review of the problem of structured robust stabilization of linear time invariant systems, that is, search of conditions for the roots of polynomials and eigenvalue of matrices to stay in a region of the complex palne when the coefficients change inside a fixed region in the parametric space. Besides revisiting already estabished resul
Publicado em: 1991
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8. Evidence of tectorial membrane radial motion in a propagating mode of a complex cochlear model
Knowledge of vibratory patterns in the cochlea is crucial to understanding the stimulation of mechanosensory cells. Experiments to determine the motion of the cochlear partition and surrounding fluid are extremely challenging. As a result, the motion data are incomplete and often contradictory. The bending mechanism of hair bundles, thought to be related to
National Academy of Sciences.
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9. Substructure synthesis method for simulating large molecular complexes
This paper reports a computational method for describing the conformational flexibility of very large biomolecular complexes using a reduced number of degrees of freedom. It is called the substructure synthesis method, and the basic concept is to treat the motions of a given structure as a collection of those of an assemblage of substructures. The choice of
The National Academy of Sciences.
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10. RNA hairpin-folding kinetics
Based on the complete ensemble of hairpin conformations, a statistical mechanical model that combines the eigenvalue solutions of the rate matrix and the free-energy landscapes has been able to predict the temperature-dependent folding rate, kinetic intermediates, and folding pathways for hairpin-forming RNA sequences. At temperatures higher than a “glass
The National Academy of Sciences.