Results 41 to 50 of about 1,518,407 (321)

Nonergodic Brownian oscillator: low-frequency response

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2023
Abstract An undisturbed Brownian oscillator may not reach thermal equilibrium with the thermal bath due to the formation of a localized normal mode. The latter may emerge when the spectrum of the thermal bath has a finite upper bound ω 0 and the oscillator natural frequency exceeds a critical value
openaire   +2 more sources

Low frequency longitudinal relaxation oscillation [PDF]

open access: yesPACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268), 2002
From the recent data analysis of the longitudinal feedback system and the streak camera, we have found a longitudinal relaxation beam oscillation whose frequency is a multiple of 36 Hz. When the relaxation oscillation is generated, horizontally oscillating wide beams are observed at the diagnostic beamline, and the beam lifetime is fluctuated.
null Yujong Kim   +11 more
openaire   +1 more source

Online Monitoring of Low-Frequency Oscillation Based on the Improved Analytical Modal Decomposition Method

open access: yesIEEE Access, 2020
With increasing complexity of the power system, and the gradually expanding scales, the probability of low-frequency oscillation (LFO) is increasing, and its performance is more diverse.
Yan Zhao, Jinsong Zhang, Qi Zhao
doaj   +1 more source

Research on Damping Control Index of Ultra-Low-Frequency Oscillation in Hydro-Dominant Power Systems

open access: yes, 2020
In recent years, ultra-low-frequency oscillation (ULFO) is a prominent problem in power systems of dominant hydropower. In order to suppress ULFO, the most effective strategy is the governor parameters optimization to improve the system damping within ...
Gang Chen   +6 more
semanticscholar   +1 more source

A Low Frequency Oscillator [PDF]

open access: yesNature, 1925
IT may be of interest to readers of NATURE who are working with low frequency to know of a new form of oscillator.
openaire   +1 more source

LOW-FREQUENCY SWASH OSCILLATION

open access: yesDoboku Gakkai Ronbunshu, 1993
Swash oscillation の周期は入射波のそれに比べて長くなることが知られている. こうした swash oscillation の長周期化を水理実験および有限振幅長波理論に基づく数値モデルにより検討し, 長周期波のほかに, swash zone での寄せ波と引き波の時系列に依存する追い付き・合体・吸収といった相互干渉によっても長周期の swash oscillation が形成されることを示した.
Hajime MASE, Nobuhisa KOBAYASHI
openaire   +2 more sources

Oscillation modes of dc microdischarges with parallel-plate geometry

open access: yes, 2011
Two different oscillation modes in microdischarge with parallel-plate geometry has been observed: relaxation oscillations with frequency range between 1.23 and 2.1 kHz and free-running oscillations with 7 kHz frequency.
Dragana Marić   +7 more
core   +1 more source

A quasi-periodic oscillation in the blazar J1359+4011 [PDF]

open access: yes, 2013
The OVRO 40-m telescope has been monitoring the 15 GHz radio flux density of over 1200 blazars since 2008. The 15 GHz light curve of the flat spectrum radio quasar J1359+4011 shows a strong and persistent quasi-periodic oscillation. The time-scale of the
Hovatta, T.   +8 more
core   +4 more sources

Thermodynamic investigation of an insulator irradiated by a low-energy electron beam

open access: yes, 2005
The surface of an insulating material irradiated by a beam of low energy electrons charges positively if the yield of secondary electron is greater than unity.
Garoche, P., Pesty, F.
core   +2 more sources

LOW-FREQUENCY OSCILLATIONS IN XTE J1550–564 [PDF]

open access: yesThe Astrophysical Journal, 2010
7 pages, 9 figures, accepted for publication in The Astrophysical ...
Rao, Fengyun   +4 more
openaire   +2 more sources

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