The total cross section for the near threshold η production in proton-proton collisions has been investigated with the assumption that the production mechanism is due to the emission of a meson x(π, η, σ) from one of the nucleons followed by a xN → ηN transition on the second one. The xN → ηN amplitudes are generated from the unitary multi-channel multi-resonance model which has recently been c...

Materials and Methods: Twenty-five patients (50 ears) with acne vulgaris who were treated with isotretinoin 5mg/kg were included in this study. Two patients gave up using isotretinoin after two months. Pure tone audiometry, TEOAE and DPOAE were evaluated before the use of isotretinoin and after 4 months of treatment. DPOAE was recorded as a DPgram. Results: Pre-treatment and post-treatment pure...

In this paper, we propose a speech enhancement approach. The approach is based on deriving weighted log-spectral amplitude estimator that exploits the generalized Gamma distributed speech priors under speech presence probability. The log-spectral amplitude estimator is weighted by psychoacoustically motivated speech distortion measure to take advantage of the perceptual interpretation. The expe...

Signals in a two-channel quadrature mirror filter bank are decomposed into low and high frequency components. Similarly, analytic signals can be extracted from the original signal with only positive or negative frequency contents. Multirate systems based on this idea are called quadrature mirror Hilbert transformers. Just like the case of quadrature mirror filter banks, the FIR and IIR designs ...

In this paper, distortion in the output envelope of AM modulated a class E RF power amplifier with a nonlinear capacitance with the grading coefficient 5 . 0 = m is analyzed. The calculation of output amplitude incorporates the influence of power loss versus dc supply voltage. Derivation of half cycle output voltage waveform is done with incorporating output amplitude as a function of dc supply...

We identify three Kepler transiting planets, Kepler-7b, Kepler-12b, and Kepler-41b, whose orbital phase-folded light curves are dominated by planetary atmospheric processes including thermal emission and reflected light, while the impact of non-atmospheric (i.e. gravitational) processes, including beaming (Doppler boosting) and tidal ellipsoidal distortion, is negligible. Therefore, those syste...

In this paper an algorithmic approach to the wow defect characteristic evaluation is presented. The approach is based on a sinusoidal analysis comprising both amplitude and phase spectra processing. The frequency trajectories depicting the distortion are built on a basis of amplitude, frequency and phase dependencies and are further used for wow characteristic evaluation. Additionally the exper...

We theoretically study and experimentally report the propagation of nonlinear hysteretic torsional pulses in a vertical granular chain made of cm-scale, self-hanged magnetic beads. As predicted by contact mechanics, the torsional coupling between two beads is found to be nonlinear hysteretic. This results in a nonlinear pulse distortion essentially different from the distortion predicted by cla...

The multirate digital signal processing (DSP) is required in digital system where more than one sampling rate is required. In this paper, we propose the two channel (2dimensional) perfect reconstruction multirate filter bank, which is based on the linear canonical transform. The main motivation is the fact that Linear Canonical Transform (LCT) provides a general mathematical tool with very broa...