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.

the

quasi-periodic 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.