Results 41 to 50 of about 329,555 (323)

Detection of weak monocycle sinusoidal signals with a low constant false alarm rate based on the support vector machine

The Journal of Engineering, 2019
The detection of weak monocycle sinusoidal signals is the abstract problem of the weak transient signal detection in many engineering applications. A low constant false alarm rate is often required on some occasions with serious false alarm consequences,
Bo Tan, Jingbo Guo, Guang Chang
doaj   +1 more source

Evaluation of the Influence of Body Mass Index and Signal-to-Noise Ratio on the PET/CT Image Quality in Iraqi Patients with Liver Cancer

East European Journal of Physics, 2023
Image quality has been estimated and predicted using the signal to noise ratio (SNR). The purpose of this study is to investigate the relationships between body mass index (BMI) and SNR measurements in PET imaging using patient studies with liver cancer.
Aya B. Hade, Samar I. Essa
doaj   +1 more source

A Novel Blind Spectrum Sensing Technique for Multi-User Ultraviolet Communications in Atmospheric Turbulence Channel

IEEE Access, 2019
One of the primary challenges in multi-user free space optical wireless systems is to periodically sense the optical frequency spectrum at the receiver to identify whether the channel is occupied by other transceiver pairs in order to avoid interference.
Sudhanshu Arya, Yeon Ho Chung
doaj   +1 more source

Broad-Band Noise Reduction using Least Mean Square (LMS)-Adaptive Line Enhancer (ALE) on Doppler Blood Flow Sound Signal

Jurnal Elkomika, 2022
ABSTRAK Haemorrhoidal artery ligation (HAL) adalah metode operasi wasir yang memiliki keunggulan rasa sakit minimal dan waktu pemulihan cepat. Prosedur HAL bergantung pada bunyi Doppler untuk menentukan letak arteri dalam liang anus.
DANIEL SANTOSO, OYAS WAHYUNGGORO, PRAPTO NUGROHO   +2 more
doaj   +1 more source

Capacity Results on Multiple-Input Single-Output Wireless Optical Channels

, 2017
This paper derives upper and lower bounds on the capacity of the multiple-input single-output free-space optical intensity channel with signal-independent additive Gaussian noise subject to both an average-intensity and a peak-intensity constraint.
Moser, Stefan M., Wang, Ligong, Wigger, Michèle   +2 more
core   +1 more source

SNR enhancement through phase dependent signal reconstruction algorithms for phase separated interferometric signals [PDF]

, 2007
We report several signal reconstruction algorithms for processing phase separated homodyne interferometric signals. Methods that take advantage of the phase of the signal are experimentally shown to achieve a signal-to-noise ratio (SNR) improvement of up
McDowell, Emily J., Sarunic, Marinko V., Yang, Changhuei, Yaqoob, Zahid   +3 more
core   +1 more source

ROLLING BEARING WEAK FAULT FEATURE EXTRACTION BASED ON MULTIPOINT OPTIMAL MINIMUM ENTROY DECONVOLUTION ADJUSTED AND ADAPTIVE STOCHASTIC RESONANCE WITH CUCKOO SEARCH

Jixie qiangdu, 2021
Adjusting the value of nonlinear system parameters will affect the output Signal-to-Noise Ratio（ SNR）,so Signalto-Noise Ratio（ SNR） was used as the output evaluation index of stochastic resonance.
QUAN ZhenYa, ZHANG XueLiang
doaj  

Methods of power line interference elimination in EMG signals [PDF]

, 2019
Electromyogram (EMG) recordings are often corrupted by the wide range of artifacts, which one of them is power line interference (PLI). The study focuses on some of the well-known signal processing approaches used to eliminate or attenuate PLI from EMG ...
Fajkus, Marcel, Ládrová, Martina, Martinek, Radek, Nedoma, Jan   +3 more
core   +1 more source

Chemical sensing by nonequilibrium cooperative receptors

, 2013
Cooperativity arising from local interactions in equilibrium receptor systems provides gain, but does not increase sensory performance, as measured by the signal-to-noise ratio (SNR) due to a fundamental tradeoff between gain and intrinsic noise. Here we
Meir, Yigal, Naqvi, Sahin, Skoge, Monica, Wingreen, Ned S.   +3 more
core   +1 more source

Association of Corticospinal Tract Asymmetry With Ambulatory Ability After Intracerebral Hemorrhage

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ambulatory ability after intracerebral hemorrhage (ICH) is important to patients. We tested whether asymmetry between ipsi‐ and contra‐lesional corticospinal tracts (CSTs) assessed by diffusion tensor imaging (DTI) is associated with post‐ICH ambulation.
Yasmin N. Aziz, Carl D. Langefeld, Mary E. Comeau, Miranda C. Marion, Tyler P. Behymer, Lee A. Gilkerson, Padmini Sekar, Weihong Yuan, Vivek Khandwala, Brady J. Williamson, Thomas Maloney, Achala Vagal, Pierce Boyne, Kari Dunning, Matthew L. Flaherty, Steven J. Kittner, Prachi Mehndiratta, Gunjan Y. Parikh, Michael L. James, David Roh, Fernando D. Testai, Farhaan S. Vahidy, James Thornton, Ranjit Bagga, Daniel Woo, Stacie L. Demel   +25 more
wiley   +1 more source