Results 41 to 50 of about 90,796,744 (298)

Matched subspace detection with hypothesis dependent noise power [PDF]

open access: yes, 2008
We consider the problem of detecting a subspace signal in white Gaussian noise when the noise power may be different under the null hypothesis—where it is assumed to be known—and the alternative hypothesis.
Cédric Richard   +8 more
core   +2 more sources

Intrapatient tumour heterogeneity and clonal evolution in an autopsy study of metastatic salivary gland cancer

open access: yesMolecular Oncology, EarlyView.
Tumour heterogeneity and clonal evolution of metastatic salivary gland cancer were evaluated in two patients with adenoid carcinoma and one patient with myoepithelial carcinoma. Radiology‐guided autopsy enabled multi‐region sampling (total samples n = 149), followed by whole‐genome sequencing and phylogenetic reconstruction (17 tumour samples, 4–7 per ...
Gerben Lassche   +10 more
wiley   +1 more source

Novel Method to Improve the Signal to Noise Ratio in the Far-field Results Obtained from Planar Near Field Measurements. [PDF]

open access: yes, 2010
A method to reduce the noise power in far-field pattern without modifying the desired signal is proposed. Therefore, an important signal-to-noise ratio improvement may be achieved.
Cano Facila, Francisco Jose   +3 more
core  

Peak-to-average power ratio of a Zipper signal [PDF]

open access: yes, 2001
We investigate the peak-to-average power ratio (PAR) and its effects on the performance of Zipper-VDSL systems. The spectrum and the out of band power when passing through a nonlinear device is also investigated.
Jayalath, Dhammika, Tellambura, Chintha
core   +1 more source

Infrared–Visible Image Fusion via Cross-Modal Guided Dual-Branch Networks

open access: yesApplied Sciences
In the field of low-altitude aerial drone data fusion, the fusion of infrared and visible light images remains challenging due to issues such as large modal differences, insufficient cross-modal alignment, and limited global context modeling. Traditional
Tingyu Zhu, Jinyong Chen, Gang Wang
doaj   +1 more source

Apply wavelet packet soft threshold noise reduction method to aviation gamma energy spectrum

open access: yesHe jishu, 2022
BackgroundWith the continuous development of nuclear technology, radioactive material exploration requires higher and higher detection accuracy of aerial gamma energy spectrometer, meanwhile, the wavelet packet soft threshold noise reduction method has ...
ZHANG Song   +7 more
doaj   +1 more source

A New Method to Estimate Peak Signal to Noise Ratio for Least Significant Bit Modification Audio Steganography

open access: yesPertanika Journal of Science and Technology, 2022
Audio steganography is implemented based on three main features: capacity, robustness, and imperceptibility, but simultaneously implementing them is still a challenge. Embedding data at the Least Significant Bit (LSB) of the audio sample is one of the most implemented audio steganography methods because the method will give high capacity and ...
Muhammad Harith Noor Azam   +2 more
openaire   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

open access: yesMolecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi   +6 more
wiley   +1 more source

Robust Algorithm for Aerial Video Stabilization of UAV Based onCamera Motion Trajectory [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban
Aiming at the problem of high altitude turbulence environment to the time-delay stable image acquisitionof UAV, an anti-shaking algorithm for aerial video was proposed for hovering shooting and moving shooting.
YU Songsen   +3 more
doaj   +1 more source

A Secure Medical Image Transmission System Based On 2D Logistic Map and Diffie-Hellman Key Exchange Mechanisms

open access: yesUHD Journal of Science and Technology, 2022
With the tremendous growth of searchable visual media, the content-based medical image retrieval and computer-aided diagnosis systems have become popular in recent years to improve knowledge and provide facilities for radiologists.
Shakhawan H. Wady, Raghad Z. Yousif
doaj   +1 more source

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