Results 311 to 320 of about 139,680 (346)

Comment on ‘‘Suppression of chaos by resonant parametric perturbations’’

Physical Review E, 1993
The inhibition of the chaotic behavior of the Duffing-Holmes oscillator by means of a small parametric perturbation of suitable frequency, as shown by Lima and Pettini [Phys. Rev. A 41, 726 (1990)], is here reconsidered. The discrepancies noted in that article between the analytical (Melnikov method) and numerical (Lyapunov exponents) results are shown
, Cuadros, , Chacón
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Reverse wave suppression in unstable ring resonator

17th Fluid Dynamics, Plasma Dynamics, and Lasers Conference, 1984
The effectiveness of a reverse wave suppressor (RWS) mirror in an unstable ring resonator has been investigated theoretically and experimentally for the case of an inhomogeneously broadened gain medium. The theory indicates that the RWS mirror is effective when (δ/Δνh)2 ≪ 1, where Δνh is the characteristic homogeneous linewidth of the gain medium and δ
H, Mirels, R A, Chodzko, J M, Bernard, R R, Giedt, J G, Coffer   +4 more
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SUPPRESSION OF JAMMING IN EXCITABLE SYSTEMS BY APERIODIC STOCHASTIC RESONANCE

International Journal of Bifurcation and Chaos, 2004
To suppress undesirable noise (jamming) associated with signals is important for many applications. Here we explore the idea of jamming suppression with realistic, aperiodic signals by stochastic resonance. In particular, we consider weak amplitude-modulated (AM), frequency-modulated (FM), and chaotic signals with strong, broad-band or narrow-band ...
Ying-Cheng Lai, Zonghua Liu, Arje Nachman, Liqiang Zhu   +3 more
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Resonance Suppression on Nanoscale Viscoelasticity Measurement

Advanced Materials Research, 2012
During the broadband viscoelasticity measurement process, when the frequency of the excitation force become high relative to the resonant frequency or the bandwidth of the instrument dynamics, the adverse instrument dynamics is motivated, which causes the cantilever resonance and generates large measurement errors in the measurement data. To solve this
Ping Xie, Lei Zhang, Qing Ze Zou
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Ferumoxytol-enhanced vascular suppression in magnetic resonance neurography

Skeletal Radiology, 2021
To evaluate ferumoxytol-enhanced vascular suppression for visualizing branch nerves of the brachial plexus in magnetic resonance (MR) neurography.Signal simulations were performed to determine ferumoxytol's effect on nerve-, fat-, and blood-to-muscle contrast and to optimize pulse sequence parameters.
Sophie C, Queler, Ek Tsoon, Tan, Christian, Geannette, Martin, Prince, Darryl B, Sneag   +4 more
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Experimental evidence of suppression of chaos by resonant parametric perturbations

Physical Review A, 1991
Experimental results are reported concerning the possibility of reducing and even suppressing chaoticity in a bistable magnetoelastic beam system by means of parametric periodic perturbations. The experimental parameters are chosen such that a strange attractor is observed. Then a parametric perturbation is added.
FRONZONI, LEONE, GIOCONDO M, PETTINI M.
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An optimal controller for the suppression of subsynchronous resonance

Electric Power Systems Research, 1983
Abstract This paper describes an investigation into the use of an optimal controller using state variable feedback to suppress subsynchronous resonance (SSR) of the 1072 MVA nuclear powered turbogenerators to be installed at the Koeberg power station.
M.A. Lahoud, R.G. Harley
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Suppression of chaos by selective resonant parametric perturbations

Physical Review E, 1995
It is shown that, depending on its amplitude, frequency, and initial phase, a time-dependent periodic parametric perturbation can suppress chaos in nonlinear oscillators. The example of the Duffing-Holmes oscillator is used to demonstrate that all the numerically and experimentally observed phenomenology is theoretically explained by using the Melnikov-
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Surface-suppressed electron resonance spectroscopies

The Journal of Chemical Physics, 1986
Surface-suppressed electron resonance spectroscopies (SSERS) refers to the phenomenon in which stable paramagnetic radicals adsorbed on clean (noble) metal surfaces have their ESR signal suppressed. This phenomenon is studied in some detail by ultra-high-vacuum ESR (UHV-ESR) and cyclotron resonance from microwave-induced secondary electron emissions ...
P. Glenn Barkley, Joseph P. Hornak, Jack H. Freed   +2 more
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Resonance suppression in a TEM cell.

The Journal of microwave power, 1984
All TEmnp resonances in a TEM cell have been suppressed by cutting the cell walls longitudinally. The TMmnp resonances and propagating TEM mode were not affected. The suppressed resonances have a residual interaction with a biological body inside the cell.
D A, Hill, J A, Walsh
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