Contributors:M. Panagopoulou, C. Psychalinos, F.A. Khanday, N.A. Shah
Sinh-Domain lossy integrator with independent electronic adjustment of the cutoff frequency and gain.
... Output waveforms for the six-phase Sinh-Domain oscillator.
... Demonstration of the electronic tunability of the oscillator in Fig. 6.
... Sinusoidal oscillators... Multiphase oscillators
Contributors:Moinuddin Malik, Ajit Mujumdar, Rajesh Dave
Effect of number of particles on critical frequency of oscillating sectorial containers
... Oscillating sectorial containers... Snapshots of unary particulate beds at the end of 20 oscillation cycles for various oscillationfrequencies.
... Variation of initial and long time mixing rate constants with oscillationfrequency.
... Snapshots of binary particulate beds at the end of 20 oscillation cycles for various oscillationfrequencies.
... Snapshots at the end of 20 oscillation cycles of two types of particulate beds having different number of particles; snapshot (b) is at critical frequency, and snapshots (a) and (c) are at frequencies below and above the critical frequency.
Contributors:L. Elliot Hong, Lauren V. Moran, Xiaoming Du, Patricio O’Donnell, Ann Summerfelt
Decomposition of time-scale (frequency) activities from a randomly selected single trial in response to a duration deviant stimulus in a schizophrenia patient, using 8-level bio5.5 discrete wavelet. Note that this graph is a technical illustration only: single trial data vary greatly from trial to trial. Time 0 indicates the onset of the duration deviant stimulus. Activities from 25 to 275ms were extracted for calculation of power (PSD). The y-axis is scaled differently in different detail scales in this illustration. There were no discernable evoked oscillatory signals that could be easily observed from the original single trial recording (top). With the discrete wavelet transform, it appeared that very small but discernable energy changes might have appeared at detail level D3 (85–150Hz), D6 (12–20Hz), D7 (5–12Hz), and D8 (1–5Hz), as marked by the red ovals. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
A plot of the schematic description about the locked zone for different oscillating amplitude (A) and frequency (F) with Re=100.
... The mean and RMS values of the Nusselt number (Nu(ave), Nu(RMS)) for different oscillatingfrequencies and different Reynolds number (Re) with A=0.25, where Nu0 is the mean Nusselt number of the flow around a heated stationary cylinder corresponding to the same Re as the oscillation conditions.
... The mean and RMS value of the Nusselt number (Nu (ave), Nu (RMS)) for different oscillatingfrequencies and amplitudes with Re=100.
... Time series of the mean Nusselt number (Nu) around the transversely oscillating cylinder with Re=200, A=0.4, Fc=0.2.
... Stream-wise oscillating cylinder... Power spectrum analysis of the drag (left) and lift (right) coefficients for different oscillatingfrequencies with Re=100, A=0.1.
Contributors:W. Geiger, H. Sandmaier, W. Lang
Oscillator... Measured temperature dependence of the oscillator's amplitude with constant driving frequency and amplitude at the beginning of the plateau.
... Simulated frequency response of the mechanically controlled oscillator. Unstable regions are printed with a thin line.
... Measured frequency response of the mechanically controlled oscillator.
... Schematic drawing of a rotary oscillator mechanically controlled by stoppers.
... Measured temperature dependence of the oscillator's phase with constant driving frequency and amplitude at the beginning of the plateau.
Contributors:Jiwoo Hong, Young Kwon Kim, Kwan Hyoung Kang, Joonwon Kim, Sang Joon Lee
Variations of resonance frequency according to drop viscosity. Dash denotes absence of resonance frequency.
... Temporal evolution of the base radius (colored symbol) of oscillating drops with different viscosities for different frequencies of (a) 32Hz and (b) 98Hz at η=0.25; (c) 28 and (d) 94Hz at η=0.39. The dashed lines denote subharmonic oscillation.
... Maximum amplitudes of oscillating drops with different viscosities along with AC frequency at different η; (a) and (b): η=0.25, (c) and (d) η=0.39.
... Oscillation patterns of 5μL drops with different viscosities at η=0.25 for different frequencies of (a) 32Hz and (b) 98Hz. The patterns are obtained by superposing more than 20 images. The solid lines in the right column depict instantaneous drop deformation for theoretical P2 and P4 mode shape oscillation; short dashed lines represent initial quiescent shapes; arrows denote nodal points.
... Resonance frequency... Frequency response at harmonic and subharmonic frequencies.
... Drop oscillation
Contributors:Panos A. Psimoulis, Stathis C. Stiros
Natural frequency... Top: The Evripos (central Greece) cable bridge. An arrow indicates the position where the RTS reflector was fixed (midspan). Bottom: Spectrum of the recorded height changes at the midspan using RTS. The peak at around 0.56 Hz corresponds to the 4th modal frequency of bridge (0.552 Hz, FEM-derived value). Frequenciesfrequency of the bridge 0.362 Hz . Interestingly, noise in the RTS recordings and the assumption of equidistant data have probably concealed some of the dominant frequencies, but still one of them is clearly shown (modified after Lekidis et al. ).
... (a) Cartoon to explain the measurement of the pendulum oscillation. Left, vertical section; right plan view, showing three points from which measurements were made. (b) Graph of a part of an oscillation recorded from site 1. (c) Graph of the oscillation from site 3 in perspective form. The oscillation trajectory is also projected in the x–y plane. (d) An example of poorly recorded oscillation in the case of a target with a high linear (> 15 cm/s) or angular (approximately 10–15∘/s) velocity.
... Oscillation... Time series of x, y and z axes of a representative oscillation experiment (left) and the corresponding spectrograms (right). The time series of the x axis describe accurately the oscillation amplitude (2 cm) and the corresponding spectrogram defines the oscillationfrequency (1 Hz). Measurement noise in the y and z axes is ±2 mm and ±0.5 mm, respectively, and can be classified as white noise.
... RTS timeseries describing the wagon displacement during selected experiments. Horizontal lines indicate the real oscillation amplitude, preset in the device and confirmed by independent optical observations. The input (real) oscillationfrequency is indicated in each diagram. Note the accurate determination of the oscillation amplitude. The arrows indicate parts of the time series where the maximum amplitude of the oscillation could not be recorded due to the limited recording frequency relatively to the oscillationfrequency. Approximate maximum velocities for a:6, b:16, c:20, d:24, e:29, f: 12.5 cm/s.
... Comparison of the oscillationfrequency of the pendulum predicted from the basic formula (standard error computed from the law of propagation of errors ) and spectral analysis of RTS data for two cord lengths
Contributors:K Darowicki, A Zieliński, A Krakowiak
Mean quadratic width B of the main frequency band of electrochemical oscillations (Fig. 6)
... Electrochemical oscillations... Exemplary records of current oscillations accompanying the anodic dissolution of copper in the 0.3 M NaCl+0.5 M H2SO4 solution. Anodic polarization 380 mV vs. Hg/Hg2Cl2 reference electrode. Sampling frequency 30 Hz. Fig. 5B presents a fragment of the record showing the structure of a single oscillation peak.
... Mean quadratic width B of the main frequency band of electrochemical oscillations (Fig. 8)
... Mean quadratic width B of the main frequency band of electrochemical oscillations (Fig. 9)
Pressure fluctuations in the 8-in. burner for the stable combustion case ((A), Φ=0.7) and for the oscillating case ((B), Φ=1.0) under the fixed air flow rate condition Qa=800m3/h.
... Pressure fluctuations spectra of the 12-in. burner for the stable combustion case ((A), part (a) of Fig. 11A), and for the oscillating case ((B), part (a) of Fig. 11B), and for the early stage of the high frequencyoscillation ((C), part (b) of Fig. 11B).
... Pressure fluctuations spectra of the 8-in. burner for the stable combustion case ((A), part (a) of Fig. 8A), and for the oscillating case ((B), part (a) of Fig. 8B), and for the early stage of the high frequencyoscillation ((C), part (b) of Fig. 8B).
... Natural frequencies of tangential/radial mode oscillations of the 12-in. burner (A) and the experimental peak frequencies (B) (peak frequencies (c)–(h) in Fig 12B).
... Natural frequencies of tangential/radial mode oscillations of the 8-in. burner (A) and the experimental peak frequencies (B) (peak frequencies (c)–(h) in Fig 10B).
Low-frequencyoscillation... Frequency responses of the filters.
... Oscillation dynamics and stability evaluation.
... Oscillation dynamics and stability evaluation of the Central China low-frequencyoscillation event.