Bifurcations
Mostrando 1-12 de 80 artigos, teses e dissertações.
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1. BIFURCATIONS ON THE ROAD: CONFLICTING INTENTIONS AND DEMONSTRATIVE REFERENCE
Abstract This is a critical notice of Mario Gómez-Torrente's novel account of demonstrative reference presented in chapter 2 of the recently published book Roads to Reference. After presenting the main tenets of his view (including the existence of a multitude of cases where demonstrative reference is indeterminate), I go on to critically examine a couple o
Manuscrito. Publicado em: 2020-12
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2. Energy harvesting through pendulum motion and DC generators
Abstract In this paper a mathematical model was found, and numerical results obtained for the pendulum behavior when coupled to a DC generator. A simple pendulum is vertically excited on its support and consequently exhibiting oscillations and rotations. The motion of the pendulum spins the axis of a DC generator and inducing a current. The dynamic model inv
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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3. A CFD STUDY OF DEPOSITION OF PHARMACEUTICAL AEROSOLS UNDER DIFFERENT RESPIRATORY CONDITIONS
Abstract Respiratory diseases have received increasing attention in recent decades. Airway bifurcations are difficult regions to study, and computational fluid dynamics (CFD) offers an alternative way of evaluating the behavior of pharmaceutical aerosols used in the treatment of respiratory disorders. In this work, particle deposition was analyzed using a th
Braz. J. Chem. Eng.. Publicado em: 2016-09
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4. Brazilian Angiostrongylus cantonensis haplotypes, ac8 and ac9, have two different biological and morphological profiles
Angiostrongylus cantonensis is the etiologic agent of eosinophilic meningoencephalitis in humans. Cases have been recorded in many parts of the world, including Brazil. The aim of this study was to compare the differences in the biology and morphology of two different Brazilian haplotypes of A. : ac8 and ac9. A significantly larger number of L1 larvae elimi
Mem. Inst. Oswaldo Cruz. Publicado em: 2014-12
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5. Molecular characterization of arabica and Conilon coffee plants genotypes by SSR and ISSR markers
The molecular characterization of ten genotypes of the Coffea arabica plants and of seven genotypes of C. canephora having interesting features for coffee breeding programs was carried to select the parents for breeding. A total of 40 SSR and 29 ISSR primers were used. The primers generated a total of 331 (307 polymorphic and 24 monomorphic) bands. Analysis
Braz. arch. biol. technol.. Publicado em: 2014-10
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6. Classification of bifid mandibular canals using cone beam computed tomography
The objective of this study was to classify the morphology of bifid mandibular canals and to evaluate their relationship with the roots of third molars, using cone beam computed tomography (CBCT) scans. The CBCT scans of 75 patients were analyzed and the bifurcations were classified according to Langlais et al. (1985). The relationship of bifurcation and thi
Braz. oral res.. Publicado em: 2013-12
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7. Irregular vibrations in multi-mass discrete-continuous systems torsionally deformed
In the paper irregular vibrations of discrete-continuous systems consisting of an arbitrary number rigid bodies connected by shafts torsionally deformed are studied. In the systems a local nonlinearity described by the polynomial of the third degree is introduced. It is assumed that the characteristic of the local nonlinearity is of a hard type. Governing eq
Lat. Am. j. solids struct.. Publicado em: 2013-01
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8. Metodologia de avaliação de margem de estabilidade devido a bifurcações em sistemas elétricos de potência / Assessment methodology due to margin stability bifurcations in electric power systems
A complexidade da avaliação de segurança em sistemas de potência vem se tornando elevada, principalmente devido ao aumento por demanda de energia elétrica. Diariamente são inseridas cargas de forma sucessiva nos sistemas elétricos, podendo este fato conduzir o sistema ao colapso, caso não haja um planejamento adequado que evite tal ocorrência. Visan
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/03/2012
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9. Sistemas planares de Filippov e bifurcações genéricas de baixa codimensão / Planar Filippov systems and generic bifurcations of low codimension
Neste trabalho, abordamos aspectos geométricos e qualitativos da teoria de Sistemas Dinâmicos Suaves por Partes, mais especificamente a classe dos Sistemas Planares de Filippov. é feito um estudo sistemático das singularidades genéricas de um Sistema Planar de Filippov, bem como a noção de estabilidade estrutural local e uma classificação através d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/03/2012
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10. Estudo numérico das bifurcações do sistema regulador de Watt / Numerical study of bifurcations in the Watt governor system
Neste trabalho estudamos a auto-organização de estruturas periódicas no espaço de parâmetros do maior expoente de Lyapunov (diagramas de Lyapunov) em um modelo do sistema regulador deWatt. Uma organização hierárquica e cascatas de bifurcação por adição de período das estruturas periódicas são observadas e estas cascatas auto-organizadas se acu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2011
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11. Nonlinear dynamics of electromagnetic pulses in cold relativistic plasmas
In the present analysis we study the self-consistent propagation of nonlinear electromagnetic pulses in a one-dimensional relativistic electron–ion plasma, from the perspective of nonlinear dynamics. We show how a series of Hamiltonian bifurcations give rise to the electric fields which are of relevance in the subject of particle acceleration. Connections
Publicado em: 2011
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12. Equações diferenciais : reversibilidade e bifurcações / Differential equations : reversibility and bifurcations
Na primeira parte desta tese, estudamos a semelhança entre sistemas dinâmicos reversíveis e Hamiltonianos, sob um ponto de vista formal. Nos restringimos a sistemas definidos ao redor de pontos de equilíbrio simples e simétricos. Mostramos que, sob algumas hipóteses, tais sistemas são formalmente orbitalmente equivalentes. Na segunda parte, estudamos
Publicado em: 2011