Results 81 to 90 of about 79,864 (297)

Deep convolutional and LSTM recurrent neural networks for multimodal wearable activity recognition [PDF]

open access: yes, 2016
Human activity recognition (HAR) tasks have traditionally been solved using engineered features obtained by heuristic processes. Current research suggests that deep convolutional neural networks are suited to automate feature extraction from raw sensor ...
Alsheikh   +11 more
core   +2 more sources

Novel on chip rotation detection based on the acousto-optic effect in surface acoustic wave gyroscopes.

open access: yesOptics Express, 2018
An Acousto-Optic Gyroscope (AOG) consisting of a photonic integrated device embedded into two inherently matched piezoelectric surface acoustic wave (SAW) resonators sharing the same acoustic cavity is presented.
M. Mahmoud   +6 more
semanticscholar   +1 more source

Neonatal Respiration Monitoring System with Synchronized Oxygen Supply and Machine Learning‐Based Breathing Classification

open access: yesAdvanced Intelligent Systems, EarlyView.
The study presents a low‐cost, noninvasive system for real‐time neonatal respiratory monitoring. A flexible, screen‐printed sensor patch captures chest movements with high sensitivity and minimal drift. Combined with machine learning, the system accurately detects breathing patterns and offers a practical solution for neonatal care in low‐resource ...
Gitansh Verma   +3 more
wiley   +1 more source

Absolute rotation detection by Coriolis force measurement using optomechanics

open access: yesNew Journal of Physics, 2016
In this article, we present an application of the optomechanical cavities for absolute rotation detection. Two optomechanical cavities, one in each arm, are placed in a Michelson interferometer.
Sankar Davuluri, Yong Li
doaj   +1 more source

FMCW radar and inertial sensing synergy for assisted living

open access: yesThe Journal of Engineering, 2019
This study presents preliminary results about the multi-sensory recognition of indoor daily activities and fall detection, to monitor the well-being of older people at risk of physical and cognitive chronic health conditions.
Haobo Li   +4 more
doaj   +1 more source

All sky pointing attitude control system [PDF]

open access: yes, 1977
In a strapped-down gyroscope space vehicle attitude control system, a method and apparatus are provided for gyro drift and input axis misalignment error compensation employing a sun and a star tracker and preselected vehicle calibration maneuvers.
Lorell, K. R., Murphy, J. P.
core   +1 more source

Gyroscopic motion of superfluid trapped atomic condensates

open access: yes, 2002
The gyroscopic motion of a trapped Bose gas containing a vortex is studied. We model the system as a classical top, as a superposition of coherent hydrodynamic states, by solution of the Bogoliubov equations, and by integration of the time-dependent ...
Abo-Shaer J R   +27 more
core   +3 more sources

MEASURING GRAVITOMAGNETIC EFFECTS BY MEANS OF RING LASERS [PDF]

open access: yes, 2013
Light is a good probe for general relativistic effects. Exploiting the asymmetry of the propagation in the vicinity of a central rotating mass it is possible to use a ring laser in order to measure the frame dragging of the reference frames by the ...
Lense J., Thirring H.
core   +1 more source

Optical Fiber‐Based Versatile Wearable Force Myography System: Application to Human–Robot Interaction

open access: yesAdvanced Intelligent Systems, EarlyView.
A compact and flexible wearable force myography sensor based on optical fiber technology detects muscle activity through pressure‐induced light loss. The sensor offers high sensitivity for detecting subtle force and finger motion changes, along with excellent signal stability under dynamic and sweating conditions.
Chongyoung Chung   +3 more
wiley   +1 more source

Experimental Identification of Smartphones Using Fingerprints of Built-In Micro-Electro Mechanical Systems (MEMS)

open access: yesSensors, 2016
The correct identification of smartphones has various applications in the field of security or the fight against counterfeiting. As the level of sophistication in counterfeit electronics increases, detection procedures must become more accurate but also ...
Gianmarco Baldini   +4 more
doaj   +1 more source

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