On Saturn, it's known as Quasi-Periodic
Oscillation (QPO) and Quasi-Quadrennial Oscillation (QQO) on Jupiter.
Cong, Liu, and Yuan prove the long-time stability of KAM tori (thus quasi-periodic
solutions) of a nonlinear Schr|dinger equation subject to Dirichlet boundary conditions u(t,0) = u(t,pi) where one element in the equation is a real Fourier multiplier.
In 2014, Dheeraj Pasham (NASA Goddard) and colleagues weighed a potential IMBH using quasi-periodic
oscillations (QPOs), cyclic blips in a black hole's X-ray signal that astronomers suspect are related to the object's mass.
The above bifurcation diagrams show that breathing crack plate has complex nonlinear phenomenon: quasi-periodic
motion, bifurcation motion, and chaotic motion.
In a dynamic region [SIGMA] which contains n x n cells, the whole domain may consist of the periodic, quasi-periodic
, or chaotic state due to the analytic solution.
Relying on my recent results on quantitative stochastic homogenization, I have made a sharp numerical analysis of these methods, and introduced more efficient variants, so that the three academic examples of periodic, quasi-periodic
, and random stationary diffusion coefficients can be dealt with efficiently.
An efficient algorithm for automatic peak detection in noisy periodic and quasi-periodic
signals, Algorithms 5(4): 588-603.
CAP is a quasi-periodic
EEG activity characterized by cyclic sequences of cerebral activation (phase A; about 8-15 seconds) followed by periods of deactivation (phase B; about 15-20 seconds) [5-7].
Twenty years after the discovery of neutron stars, quasi-periodic
oscillations (QPOs) of X-rays were observed first from white dwarfs and then from neutron stars [13-14].
Beyond these bounds the laser output is subjected to various irregular oscillations, which extend from regular pulsing over quasi-periodic
pulsing to chaotic pulsing, where chaotic pulses have both chaotic peak intensities and chaotic pulse intervals.
motion of Earth's axis of rotation in space, especially at annual and semi-annual frequencies.
Rezig, "A broad omnidirectional reflection band obtained from deformed Fibonacci quasi-periodic
one dimensional photonic crystals," J.