Results 81 to 90 of about 1,050 (195)
Low-threshold subharmonic generation in composites structures with Cantor-like code
, 1992 We show experimental evidence of extremely low thresholds for subharmonic generation of ultrasonic waves in one-dimensional artificial piezoelectric plates with Cantor-like structure, as compared to the corresponding homogeneous periodic plates.
G. SHKERDIN +5 more
core +1 more source
IEEE Journal of MicrowavesThis paper presents a high-performance terahertz frequency-modulated continuous-wave (FMCW) transceiver front-end operating at 139.5–148.5 GHz, which leverages a high-power frequency doubler to address critical challenges in terahertz ...
Xuan Sheng +8 more
doaj +1 more source
A subharmonic vibratory pattern in normal vocal folds
, 1996 This study observes in detail an F-0/2 (sounding an octave below an original tone) subharmonic vibratory pattern produced in a normal larynx. Simultaneous electroglottographic and photoglottographic measurements reveal two different open phases within a ...
Svec, JG, Schutte, HK, Miller, DG
core +1 more source
Noise Reduction Using Synthetic Microjet Excitation in Supersonic Rectangular Jets
Applied SciencesThis work explores a potential methodology for rectangular jet noise reduction that employs nozzle unsteady microjet excitation. Using high-fidelity computational studies and spectral analyses, major jet noise sources impacted by the applied actuation ...
Michael Marques +3 more
doaj +1 more source
Entanglement of Cavity Light Produced by a Superposed Two-Mode Coherent and Subharmonic Light
, 2019 21 pages, 3 ...
Melaku, Menwuyelet, Hirpo, Deribe
openaire +2 more sources
, 2005 The action of the so-called green noise (the noise whose spectral density is zero at zero frequency) oil the parametric Synchronization in a ring laser and in a phase-locked loop system is analyzed.
Guz SA, MANNELLA, RICCARDO, Sviridov MV
core
Measurement of vibration modes of thin shell of loudspeaker using laser triangulation method
Results in PhysicsPSD sensors can easily receive common mode signals, including ambient light, temperature drift, electromagnetic interference, background noise of the laser output, etc.
Xianyang Zeng +3 more
doaj +1 more source
Instabilities and subharmonic resonances of subsonic heated round jets, volume 2
, 1990 When a jet is perturbed by a periodic excitation of suitable frequency, a large-scale coherent structure develops and grows in amplitude as it propagates downstream. The structure eventually rolls up into vortices at some downstream location.
Ng, Lian Lai
core
A Numerical Method on Large Roll Motion in Beam Seas Under Intact and Damaged Conditions
Journal of Marine Science and EngineeringThe second-generation intact stability criteria, including five stability failure modes, were approved by the International Maritime Organization (IMO) in 2020, and it is an urgent task to develop the numerical method for the significant roll motion ...
Jiang Lu +4 more
doaj +1 more source