Results 31 to 40 of about 524,705 (296)
High-frequency air-coupled transducers [PDF]
The Journal of the Acoustical Society of America, 1990 High-frequency air-coupled ultrasonic transducers are used in industrial applications for detecting or ranging with high resolution. The improvement of the coupling between PZT and air is of importance for the transducer performance. Unfortunately, it is difficult to find a material with proper acoustical impedance and small attenuation at high ...
Xiaoqi Bao +2 more
openaire +1 more source
Synchronisation Properties of Trees in the Kuramoto Model [PDF]
, 2013 We consider the Kuramoto model of coupled oscillators, specifically the case of tree networks, for which we prove a simple closed-form expression for the critical coupling.
Dekker, Anthony H., Taylor, Richard
core +3 more sources
A group theoretic approach to generalized harmonic vibrations in a one dimensional lattice
International Journal of Mathematics and Mathematical Sciences, 1986 Beginning with a group theoretical simplification of the equations of motion for harmonically coupled point masses moving on a fixed circle, we obtain the natural frequencies of motion for the array.
J. N. Boyd, P. N. Raychowdhury
doaj +1 more source
Electromagnetic Signature of a Quadcopter Drone and Its Relationship With Coupling Mechanisms
IEEE Access, 2019 This paper presents an investigation of the electromagnetic signature and the coupling mechanism of quadcopter drones with incident electromagnetic (EM) wave and radar cross section (RCS) analysis.
Sangin Kim +5 more
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Numerical and Experimental Investigations of Coupling Effects in Anisotropic Elastic Rotors
International Journal of Rotating Machinery, 1999 It is known that in elastic disc-shaft systems in particular, the one-nodal-diameter mode of the discs can be highly coupled with the bending modes of the shaft.
Horst Irretier +2 more
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Entanglement tongue and quantum synchronization of disordered oscillators
, 2013 We study the synchronization of dissipatively-coupled van der Pol oscillators in the quantum limit, when each oscillator is near its quantum ground state.
Chan, Ching-Kit +2 more
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Overdamping by weakly coupled environments [PDF]
, 2005 A quantum system weakly interacting with a fast environment usually undergoes a relaxation with complex frequencies whose imaginary parts are damping rates quadratic in the coupling to the environment, in accord with Fermi's ``Golden Rule''.
A. G. Redfield +7 more
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AIP Advances, 2019 Synthetic antiferromagnetic nanodots with perpendicular magnetic anisotropy are promising candidates for improving the performance of magnetic random-access memory or spin torque nano-oscillators; however, the mechanism for the interlayer ...
X. Ya +3 more
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Collective oscillations in two-dimensional Bose-Einstein condensate
, 2004 We study the effect of lower dimensional geometry on the frequencies of the collective oscillations of a Bose-Einstein condensate confined in a trap. To study the effect of two dimensional geometry we consider a pancake-shaped condensate confined in a ...
Arup Banerjee +21 more
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Journal of Applied and Computational Mechanics, 2015 This study introduces the Differential Transform Method (DTM) to analyse the free vibration response of a rotating, closed section, composite, Timoshenko beam which features material coupling between flapwise bending and torsional vibrations due to ply ...
Saeed Talebi +2 more
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