Results 151 to 160 of about 45,007 (189)

Assessment of children’s sleep using thigh-worn Axivity AX3 accelerometers

Johansen MS, Lykke EH, Grøntved A, Kristensen PL, Schmidt-Persson J, Slater SO, Mortensen SR, Meredith-Jones K, Taylor R, Brønd JC.   +9 more
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Slow Light Enhanced Accelerometry

Frontiers in Optics + Laser Science 2022 (FIO, LS), 2022
We show how to realize a slow-light enhanced accelerometer using a Mach-Zehnder Interferometer. A proof-of-principle experiment carried out with Rb vapor is found to produce results in close agreement with the theoretical model.
Ruoxi Zhu, Zifan Zhou, Jason Bonacum, Selim Shahriar   +3 more
openaire   +1 more source

Membrane-based optomechanical accelerometry

Conference on Lasers and Electro-Optics, 2021
Optomechanical accelerometers promise quantum-limited readout, high band- width, self-calibration, and radiation-pressure stabilization. We present a simple, scalable platform that enables these benefits with sub-µg sensitivity and 10 kHz bandwidth, based on a pair of vertically integrated SiN membranes.
Aman R. Agrawal, Mitul Dey Chowdhury, Christian M. Pluchar, Dalziel Wilson   +3 more
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Assessing human movement with accelerometry

WORK: A Journal of Prevention, Assessment & Rehabilitation, 2006
The methods for measuring and evaluating human movement have advanced rapidly over the past 2 decades. The use of smaller, lighter, more powerful personal computers, digital video cameras and miniature, portable accelerometers have allowed the health professional, engineer, sports coach and scientist to very precisely record and quantify human ...
Thomas W, Pelham, Michael G, Robinson, Laurence E, Holt   +2 more
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Physical activity estimation from accelerometry

2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2019
Objective physical activity (PA) quantification is traditionally achieved using lightweight accelerometers accounting for activity frequency, intensity and duration. The accelerometer data are usually converted into activity counts and these counts can be used on their own to quantify the intensity and duration of a PA period or they can serve as ...
Garnotel, Maël, C, Simon,, Bonnet, S.
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Absolute astronomical accelerometry

Astrophysics and Space Science, 1984
AbstractA new technique is proposed, leading to two closely related instruments, the solar and stellar accelerometers. The principal fields of application are solar/stellar seismology and the search for extrasolar planets. The technique is fully specific: it cannot give the velocities themselves.
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Development of absolute accelerometry

Astrophysics and Space Science, 1994
Absolute accelerometry is a technique for detecting small radial velocity changes involving lasers. The final output is a beat frequency similar to that from a Doppler radar. A progress report is presented on the development which began three years ago.
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