In particular, by exciting the droplet flame in a critical, responsive frequency range (80 Hz ⩽ fP ⩽ 120 Hz) the droplet deformation cycle could be altered through suppression of these self-excited instabilities and intensity/frequency of bubble ejection events.
A parsimonious explanation for the critical spatial frequency range that we measured for human action recognition is that it reflects the best compromise between the optimal SF information for the task, which was measured with the ideal observer analysis, and the contrast sensitivity function inherent to the human visual system.
Depending on light intensity and the adaptation state of the observer, critical flicker frequency ranges between 3 and 63 Hz in humans (Simonson and Brozek, 1952).
The Reynolds number is sub-critical, and the frequency range considered is above the low-mode Strouhal shedding frequency of the sphere (0.5���fd/U0⩽100, where f is the frequency, d is the diameter, and U0 is the mean flow speed).
Zwicker, E. Subdivision of the audible frequency range into critical bands (Frequenzgruppen).
Four major oscillation modes and their effects on power system stability have been investigated and analyzed, and the critical elements affecting each mode, frequency range, and PSS application have been summarized using important published work.
A few new physical phenomena such as backward propagation and disappearance of slow wave when exceeding critical frequency and disappearing shear wave in high frequency range, which were not predicted by Biot theory, are demonstrated.
In order to address these difficulties, system-specified, maximum, critical amplitudes according to three critical frequencies capable of representing the excitation frequency range are established.
It is shown that the air gap flow enhances the transmission loss in the mid-high frequency range near the critical frequency but has no influence on the thin-shell characteristic frequencies.
