F. M. de Aguiar

Educação Em Saúde Como Estratégia Para O Envelhecimento Ativo De Idosos

Raimunda Leandra Bráz da Silva, Tainá de Jesus Alves Portela, Vitória Lídia Pereira Sousa, Bruno Saboya de Aragão et autres

TECNOLOGIAS INOVADORAS NA GESTÃO DO CUIDADO CARDIOVASCULAR DE PACIENTES HIPERTENSOS PÓS-REVASCULARIZAÇÃO: UMA PERSPECTIVA NO SISTEMA UNICO DE SAÚDE

Pedro Fechine Honorato, Bruno Costa Nascimento, Andreza Cipriano Coelho, Franciana Gabaglia da Silva et autres

A gestão do cuidado cardiovascular em pacientes hipertensos pós-revascularização apresenta desafios complexos que demandam abordagens inovadoras para otimizar resultados clínicos e qualidade de vida. Este estudo teve como objetivo analisar as tecnologias inovadoras aplicadas à gestão do cuidado cardiovascular desses pacientes no …

br, Mozambique (code pays fourni par la source)

Experimental Microwave Scattering in Polygonal Billiards

R. B. do Carmo, F. M. de Aguiar

Fluctuations in the one-port scattering and normalized impedance matrices in three polygonal and one chaotic time-reversal invariant microwave billiards are experimentally investigated, in several levels of coupling and absorption, at room temperature and at 77 K. The observed distributions of reflection coefficient, …

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Classical billiards and quantum fluids

T. Araújo Lima, F. M. de Aguiar

The dynamics of a particle confined in the elliptical stadium billiard with rectangular thickness $2t$, major axis $2a$, and minor axis $2b=2$ is numerically investigated in a reduced phase space with discrete time $n$. Both relative measure $r(n)$, with asymptotic value $r(n\ensuremath{\rightarrow}\ensuremath{\infty})={r}_{\ensuremath{\infty}}$ …

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Extreme events in chaotic lasers with modulated parameter

Cyrille Métayer, Arnaud Serres, Edison Rosero, Wendson A. S. Barbosa et autres

We study a theoretical model describing a laser with a modulated parameter, concentrating on the appearance of extreme events, also called optical rogue pulses. It is shown that two conditions are required for the appearance of such events in this type of …

nc, br (code pays fourni par la source)

Extreme events in Q-switched lasers

F. M. de Aguiar, J. R. Rios Leite, Cyrille Métayer, Thomas Quiniou et autres

Since optical rogue waves (RWs) were first reported by Solli et al. in 2007 [1], the study of extreme pulses in optical systems has been a very active research field [2]. In semiconductor lasers, ultra-high intensity pulses occur when the laser is …

br, nc, ar (code pays fourni par la source)

Extreme pulses in lasers with modulated losses

F. M. de Aguiar, J. R. Rios Leite, J. R. Tredicce, Cristina Masoller

We study numerically the nonlinear dynamics of a class-B laser with harmonically modulated losses. We analyze a transition where a gradual increase of size of the attractor with varying modulation amplitude may induce large radiation spikes. The calculated intensity distribution is shown …

br, nc, es (code pays fourni par la source)

Ergodicity and quantum correlations in irrational triangular billiards

T. Araújo Lima, Sergio Rodríguez-Pérez, F. M. de Aguiar

Pseudochaotic properties are systematically investigated in a one-parameter family of irrational triangular billiards (all angles irrational with $\ensuremath{\pi}$). The absolute value of the position correlation function ${C}_{x}(t)$ decays like $\ensuremath{\sim}$${t}^{\ensuremath{-}\ensuremath{\alpha}}$. Fast $(\ensuremath{\alpha}\ensuremath{\approx}1)$ and slow $(0<\ensuremath{\alpha}<1)$ decays are observed, thus indicating that the …

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Resonant freak microwaves

F. M. de Aguiar

The Helmholtz equation describing transverse magnetic modes in a closed flat microwave resonator with 60 randomly distributed discs is numerically solved. At lower frequencies, the calculated wave intensity spatially distributed obeys the universal Porter–Thomas form if localized modes are excluded. A superposition …

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Intersections of energy surfaces in quantized Sinai billiards

F. M. de Aguiar

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Spin-wave Theory for the Magnetic Damping in Microwave Nano-Oscillators

R. L. Rodrı́guez-Suárez, S. M. Rezende, A. Azevedo, F. M. de Aguiar

cl, br (code pays fourni par la source)

Spin-wave excitation by direct current in obliquely magnetized nanostructures

R. L. Rodrı́guez-Suárez, A. Azevedo, F. M. de Aguiar, S. M. Rezende

cl, br (code pays fourni par la source)