Results 51 to 60 of about 700,760 (282)

High-frequency art image resolution reconstruction based on HFRA-SRGAN algorithm: A study on image quality metrics and super-resolution GANs

open access: yesSystems and Soft Computing
This study focuses on the problem of insufficient clarity and pixels in current art images, and constructs an art image resolution reconstruction model based on high-frequency reconstruction and amplification with super-resolution generative adversarial ...
Zhenglan Wu
doaj   +1 more source

Comparative Analysis of Filters for Cancellation of Power-line-interference of ECG Signal [PDF]

open access: yesInternational Journal Bioautomation, 2019
Filtering noises/artifacts from the electrocardiogram (ECG) can sustain the efficient clinical decision making. Comparative analysis of several filtering techniques is proposed: two adaptive noise cancellation techniques, Least Mean Square (LMS ...
Akash Kumar Bhoi   +2 more
doaj   +1 more source

Performance analysis of peak signal-to-noise ratio and multipath source routing using different denoising method

open access: yesBulletin of Electrical Engineering and Informatics, 2022
The problem of denoising iris pictures for iris identification systems will be discussed, as well as a novel solution based on wavelet and median filters. Different salt and pepper extraction algorithms, as well as Gaussian and speckle noises, were used.
Kannadhasan Suriyan   +5 more
openaire   +3 more sources

Detection of ultra-high resonance contrast in vapor cell atomic clocks

open access: yes, 2012
We propose and demonstrate a novel detection scheme of clock signals and obtain an ultra-high resonance contrast above 90%. The precision of the signal's detection and the signal-to-noise ratio (SNR) of atomic clock signal is improved remarkably.
Allan   +18 more
core   +1 more source

Differential regulation of ZFAS1 splice variants by endoplasmic reticulum stress in hepatocyte cell lines

open access: yesFEBS Open Bio, EarlyView.
ZFAS1 is a lncRNA promoting cell proliferation and migration, exhibiting high expression in various cancers. It is conserved, widely expressed, and produces multiple splice variants with unclear roles. We identified several splice variants in hepatocyte models, and found that inhibiting or suppressing regulators of the unfolded protein response (PERK ...
Sébastien Soubeyrand   +2 more
wiley   +1 more source

The Correspondence between Convergence Peaks from Weak Lensing and Massive Dark Matter Haloes

open access: yes, 2018
The convergence peaks, constructed from galaxy shape measurement in weak lensing, is a powerful probe of cosmology as the peaks can be connected with the underlined dark matter haloes.
Fan, Zuhui   +6 more
core   +1 more source

Adaptive Tone Reservation for better BER Performance in a Frequency Selective Fading Channel [PDF]

open access: yes, 2016
International audienceMulticarrier modulation systems suffer from large peak-to-average power ratio (PAPR). Tone reservation is a popular technique for PAPR reduction.
Bader, Faouzi   +4 more
core   +4 more sources

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

Efficient method for DCT-domain image arbitrary downsampling

open access: yesTongxin xuebao, 2007
A novel approach to resize Images with m/n resizing ratio in the DCT domain,was proposed which expoits the relationship of DCT coefficients between m 2input blocks and n 2output blocks.Experimental results confirm that the scheme performs about 0.5dB ...
DU Yao-gang1, CAI An-ni2
doaj   +2 more sources

Laser Diode based THz-TDS System with 133 dB peak Signal-to-Noise Ratio

open access: yes, 2023
Abstract Terahertz time-domain spectroscopy (THz-TDS) has emerged as a powerful and versatile tool in various scientific fields. These include – among others – imaging, material characterization, and layer thickness measurements. While THz-TDS has achieved significant success in research environments, the high cost and bulky nature of most ...
Vladyslav Cherniak   +3 more
openaire   +1 more source

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