Results 71 to 80 of about 88,175,373 (256)

Comparative signal to noise ratio as a determinant to select smartphone image sensor colour channels for analysis in the UVB

, 2018
The signal to noise ratio (SNR) is an important consideration for any scientific image sensor application, particularly the relatively low light involved with observations of the solar disc at a discrete ultraviolet-B (UVB) wavelength using an unmodified
J. Turner, Turner, J., A. Amar, Downs, N. J., Amar, A., Igoe, D. P., D. P Igoe, Parisi, A. V., A.V. Parisi, Downs, N.J., Igoe, D.P., Parisi, A.F., N.J. Downs   +12 more
core   +1 more source

Pitch-scaled estimation of simultaneous voiced and turbulence-noise components in speech

, 2001
Almost all speech contains simultaneous contributions from more than one acoustic source within the speaker's vocal tract. In this paper, we propose a method -- the pitch-scaled harmonic filter (PSHF) -- which aims to separate the voiced and turbulence ...
Shadle, Christine H., Jackson, Philip J.B.   +1 more
core   +2 more sources

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source

Hyperosmotic stress‐induced redistribution of pre‐mRNA cleavage factor I subunits is associated with shifts in alternative polyadenylation

FEBS Open Bio, EarlyView.
Hyperosmotic stress triggers the relocation of the CFIm complex from the nucleus to the cytoplasm. This shift creates a nuclear ‘stoichiometric bottleneck’, limiting CFIm availability for mRNA processing. Consequently, specific mRNAs like NUDT21 and DICER1 undergo targeted 3′UTR shortening, demonstrating how spatial protein dynamics drive rapid ...
Hitomi Soumiya, Masatake Osawa, Hidefumi Fukumitsu   +2 more
wiley   +1 more source

Robust Frame Synchronization for Low Signal-to-Noise Ratio Channels Using Energy-Corrected Differential Correlation

EURASIP Journal on Wireless Communications and Networking, 2009
Recent standards for wireless transmission require reliable synchronization for channels with low signal-to-noise ratio (SNR) as well as with a large amount of frequency offset, which necessitates a robust correlator structure for the initial frame ...
Kim Pansoo, Lee Dong-Uk, Sung Wonjin
doaj   +2 more sources

A Denoising Method for NMR Echo Data with Low Signal-to-Noise Ratio

Cejing jishu
Nuclear magnetic resonance (NMR) logging can effectively evaluate petrophysical parameters of reservoirs, providing an important basis for oil and gas resource exploration. It exhibits distinct advantages in the identification and quantitative evaluation
Teng Guoyuan, Xie Ranhong, Wang Shuai, Jin Bochuan, Deng Chong, Li Weilong, Bie Kang   +6 more
doaj   +1 more source

Gradient Weighting for Speaker Verification in Extremely Low Signal-to-Noise Ratio

ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Accepted by ICASSP ...
Ma, Yi, Lee, Kong Aik, Hautamäki, Ville, Ge, Meng, Li, Haizhou   +4 more
openaire   +5 more sources

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

Low-frequency noise impact on CMOS image sensors [PDF]

, 2009
CMOS image sensors are nowadays extensively used in imaging applications even for high-end applications. This is really possible thanks to a reduction of noise obtained, among others, by Correlated Double Sampling (CDS) readout.
Magnan, Pierre, Martin-Gonthier, Philippe   +1 more
core  

End-to-End Interrupted Sampling Repeater Jamming Countermeasure Network Under Low Signal-to-Noise Ratio

Sensors
Interrupted sampling repeater jamming (ISRJ) is characterized by its coherent processing gains and flexible modulation techniques. ISRJ generates spurious targets along the range, which presents significant challenges to the radar systems.
Gane Dai, Xiaoxuan Yang, Sha Huan, Ziyang Chen, Cong Peng, Yuanqin Xu   +5 more
doaj   +1 more source