Results 11 to 20 of about 193,514 (294)

Wake Detection Capacity of Actigraphy During Sleep [PDF]

open access: yesSleep, 2007
To evaluate the ability of actigraphy compared to polysomnography (PSG) to detect wakefulness in subjects submitted to 3 sleep conditions with different amounts of wakefulness: a nocturnal sleep episode and 2 daytime recovery sleep episodes, one with placebo and one with caffeine.
Jean, Paquet   +2 more
openaire   +2 more sources

Towards Automatic Recognition of Wakes Generated by Dark Vessels in Sentinel-1 Images

open access: yesRemote Sensing, 2021
The recognition of wakes generated by dark vessels is a tremendous and interesting challenge in the field of maritime surveillance by Synthetic Aperture Radar (SAR) images.
Maria Daniela Graziano, Alfredo Renga
doaj   +1 more source

Specific Windows Search for Multi-Ship and Multi-Scale Wake Detection in SAR Images

open access: yesRemote Sensing, 2021
Traditional ship identification systems have difficulty in identifying illegal or broken ships, but the wakes generated by ships can be used as a major feature for identification. However, multi-ship and multi-scale wake detection is also a big challenge.
Kaiyang Ding   +5 more
doaj   +1 more source

Ship Wake Detection in SAR Images via Sparse Regularization [PDF]

open access: yes, 2019
In order to analyse synthetic aperture radar (SAR) images of the sea surface, ship wake detection is essential for extracting information on the wake generating vessels.
Achim, Alin   +2 more
core   +4 more sources

Ship detection and classification based on cascaded detection of hull and wake from optical satellite remote sensing imagery

open access: yesGIScience & Remote Sensing, 2023
Satellite remote-sensing provides a cost- and time-effective tool for ship monitoring at sea. Most existing approaches focused on extraction of ship locations using either hull or wake.
Yingfei Liu   +3 more
doaj   +1 more source

A 2.4GHz 830pJ/bit duty-cycled wake-up receiver with −82dBm sensitivity for crystal-less wireless sensor nodes [PDF]

open access: yes, 2010
A 65 nm CMOS 2.4 GHz wake-up receiver operating with low-accuracy frequency references has been realized. Robustness to frequency inaccuracy is achieved by employing non-coherent energy detection, broadband-IF heterodyne architecture and impulse-radio ...
Breems, L.J.   +5 more
core   +3 more sources

WAKE

open access: yesProceedings of the 18th International Conference on Mobile Systems, Applications, and Services, 2020
Microsleep, caused by sleep deprivation, sleep apnea, and narcolepsy, costs the U.S.'s economy more than $411 billion/year because of work performance reduction, injuries, and traffic accidents. Mitigating microsleep's consequences require an unobtrusive, reliable, and socially acceptable microsleep detection solution throughout the day, every day ...
Pham, N   +10 more
openaire   +2 more sources

Wake Word Detection Based on Res2Net

open access: yes, 2022
This letter proposes a new wake word detection system based on Res2Net. As a variant of ResNet, Res2Net was first applied to objection detection. Res2Net realizes multiple feature scales by increasing possible receptive fields. This multiple scaling mechanism significantly improves the detection ability of wake words with different durations.
Yu, Qiuchen, Zhou, Ruohua
openaire   +2 more sources

A Bio-Inspired MEMS Wake Detector for AUV Tracking and Coordinated Formation

open access: yesRemote Sensing, 2023
AUV (Autonomous Underwater Vehicle) coordinated formation can expand the detection range, improve detection efficiency, and complete complex tasks, which requires each AUV to have the ability to track and locate.
Qingyu Qiao   +11 more
doaj   +1 more source

A new method for detection and source analysis of EEG spikes [PDF]

open access: yes, 2003
In the past our research group has developed a method for the detection of focal epileptic EEG (electroencephalogram) spikes that is based on the dipole source localization technique and provides a source localization for each detected spike.
Boon, Paul   +4 more
core   +2 more sources

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