The theoretical model for calculation of the noise reduction provided by these screens, the calculation method and the experimental data are represented in this paper.Boris I. KlimovNatalia V. SizovaSecond International Congress on Recent Developments in Air- and Structure-Borne Sound and Vibration: ...
We present a calculation of quantum noise for parametric amplification in periodically inverted nonlinear media. An analytical expression is obtained for the noise figure of the amplifier. We show that such optical parametric amplifiers run in a phase-sensitive configuration can achieve noiseless amplifica...
In droplet-based single-cell and single-nucleus RNA-seq experiments, not all reads associated with one cell barcode originate from the encapsulated cell. Such background noise is attributed to spillage from cell-free ambient RNA or barcode swapping event
Gene expression noise can reduce cellular fitness or facilitate processes such as alternative metabolism, antibiotic resistance, and differentiation. Unfortunately, efforts to study the impacts of noise have been hampered by a scaling relationship betwee
There are two main directions of noise reduction techniques: acquisition-based signal increase and post-acquisition noise reduction during or after reconstruction. During image acquisition, an improvement of the SNR can either be achieved by averaging over repeated measurements and, thus, extending the ...
(SL) was estimated using a back-calculation of 20 х log10(R(m)) applied after filtering, to correct for the range dependent decrease of the sound intensity between the source and receiver, being R the mean of the range in m of the vessel to the acoustic recorder at the CPA and at ...
The calculation is performed in the range of 0<z/D<9, which is equivalent to 3 serration wavelengths for WLE and WPLE configurations; the correlation coefficients for the SLE airfoils approaches zero at z/D≈8. In plot (a), the Rpp for porous treatments (PLE and BLE) show a monotonous...
Computation of the Flow of a Dual-Stream Jet with External Solid and Perforated Wedge Deflectors for Noise Reduction The perforated flaps mitigate the TKE increase on the top of the jet, thus reducing the potential of excess noise from that region. The thrust loss of the perforated flaps is ...
Artifacts in the Electrocardiogram (ECG) degrade the quality of the recorded signal and are not conducive to heart rate variability (HRV) analysis. The two types of noise most often found in ECG recordings are technical and physiological artifacts. Current preprocessing methods primarily attend to ec...
almost 75% of respondents clearly identified a significant reduction in the outdoor noise level worldwide, in the same period; the outdoor variation also influenced the indoor noise for at least one third of the respondents; accordingly, they felt an increase in this parameter, presumably due to...