Results 11 to 20 of about 244,669 (294)

Independently Tunable Concurrent Dual-Band VCO Using Square Open-Loop Resonator

open access: yesIEEE Access, 2018
A concurrent dual-band voltage-controlled oscillator (VCO) with independently tunable dual oscillation frequencies is proposed. A shared square open-loop dual-mode resonator and two varactor diodes are the basic units offering flexible tuning for the ...
Boqiong Li   +3 more
doaj   +1 more source

Shape oscillations in non-degenerate Bose gases - transition from the collisionless to the hydrodynamic regime [PDF]

open access: yes, 2005
We investigate collective oscillations of non-degenerate clouds of Rb-87 atoms as a function of density in an elongated magnetic trap. For the low-lying M=0 monopole-quadrupole shape oscillation we measure the oscillation frequencies and damping rates ...
Ch. Buggle   +10 more
core   +2 more sources

Inter-network interactions: impact of connections between oscillatory neuronal networks on oscillation frequency and pattern.

open access: yesPLoS ONE, 2014
Oscillations in electrical activity are a characteristic feature of many brain networks and display a wide variety of temporal patterns. A network may express a single oscillation frequency, alternate between two or more distinct frequencies, or ...
Oscar J Avella Gonzalez   +4 more
doaj   +1 more source

Magnetopause surface oscillation frequencies at different solar wind conditions [PDF]

open access: yesAnnales Geophysicae, 2009
Statistical analyses of the magnetopause (MP) motion observed by THEMIS suggested that the MP oscillates preferably at some prominent (sometimes called "magic") frequencies, which were found to stand out also in ground-based and ionospheric ...
F. Plaschke   +7 more
doaj   +1 more source

The transfer functions of rocket nozzles [PDF]

open access: yes, 1952
The transfer function is defined as the fractional oscillating mass flow rate divided by the fractional sinusoidal pressure oscillation in the rocket combustion chamber. This is calculated as a function of the frequency of oscillation.
Tsien, H. S.
core   +1 more source

The Asymptotic Frequency of Stochastic Oscillators

open access: yesSIAM Journal on Applied Dynamical Systems, 2023
21 pages, 7 figures. Update 20.09.2021: Removed incorrect numerical example, Moved a corollary to an appendix. Submitted to SIADS.
openaire   +3 more sources

LDV and PIV Measurements of the Organized Oscillations of Turbulent Flow over a Rectangular Cavity

open access: yesJournal of Fluid Science and Technology, 2010
This paper presents results of an experimental study of the organized oscillation of incompressible turbulent flow over a rectangular cavity. Experiments were carried out to clarify the oscillation frequencies and the strength of shear layer-cavity ...
Takayuki MORI, Kenji NAGANUMA
doaj   +1 more source

Vibration Measurement of Middle Ear Structure Using Doppler Optical Coherence Tomography: Preliminary Study [PDF]

open access: yesClinical and Experimental Otorhinolaryngology, 2019
Objectives Doppler optical coherence tomography (DOCT) is useful for both, the spatially resolved measurement of the tympanic membrane (TM) oscillation and high-resolution imaging.
Doekmin Jeon   +6 more
doaj   +1 more source

Topological frequency shift of quantum oscillation in CaFeAsF

open access: yesnpj Quantum Materials, 2022
Guo, Alexandradinata, et al. have recently proposed that quantum-oscillation frequencies from Dirac/Weyl fermions exhibit a negative shift proportional to T 2 because of the energy dependence of the effective mass peculiar to a linear band-dispersion. We
Taichi Terashima   +3 more
doaj   +1 more source

Oscillation-specific nodal alterations in early to middle stages Parkinson’s disease

open access: yesTranslational Neurodegeneration, 2019
Background Different oscillations of brain networks could carry different dimensions of brain integration. We aimed to investigate oscillation-specific nodal alterations in patients with Parkinson’s disease (PD) across early stage to middle stage by ...
Xiaojun Guan   +14 more
doaj   +1 more source

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