Results 51 to 60 of about 105,657 (309)

High Temperature Endurable Fiber Optic Accelerometer

Shock and Vibration, 2014
This paper presents a low frequency fiber optic accelerometer for application in high temperature environments of civil engineering structures. The reflection-based extrinsic fiber optic accelerometer developed in this study consists of a transmissive ...
Yeon-Gwan Lee, Jin-Hyuk Kim, Chun-Gon Kim   +2 more
doaj   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Physical Activity and Adiposity Markers at Older Ages: Accelerometer Vs Questionnaire Data

, 2015
Physical activity is critically important for successful aging, but its effect on adiposity markers at older ages is unclear as much of the evidence comes from self-reported data on physical activity.
van Hees, Vincent ,, Singh-Manoux, Archana, Bell, Joshua, A, Bell, Joshua A., Elbaz, A, Cogranne, Pol, Sabia, Séverine, van Hees, VT, van Hees, Vincent T, Kivimaki, Mika, Bell, Joshua A, Cogranne, P, Kivimaki, M, van Hees, Vincent, T, Elbaz, Alexis, Singh-Manoux, A, Bell, JA, van Hees, Vincent T., Bell, Joshua ,, Sabia, S   +19 more
core   +1 more source

Movement artefact removal from NIRS signal using multi-channel IMU data

BioMedical Engineering OnLine, 2018
Background The non-invasive nature of near-infrared spectroscopy (NIRS) makes it a widely accepted method for blood oxygenation measurement in various parts of the human body.
Masudur R. Siddiquee, J. Sebastian Marquez, Roozbeh Atri, Rodrigo Ramon, Robin Perry Mayrand, Ou Bai   +5 more
doaj   +1 more source

Comparison of Self-Reported and Accelerometer-Assessed Physical Activity in Older Women. [PDF]

PLoS ONE, 2015
Self-reported physical activity measures continue to be validated against accelerometers; however, the absence of standardized, accelerometer moderate-to-vigorous physical activity (MVPA) definitions has made comparisons across studies difficult ...
Eric J Shiroma, Nancy R Cook, JoAnn E Manson, Julie E Buring, Eric B Rimm, I-Min Lee   +5 more
doaj   +1 more source

Accuracy of Accelerometer-Based Navigation System Perseus for the Tibial Cut in Total Knee Arthroplasty: No Superiority Compared to Mechanical Instrumentation in Current Practice

Applied Sciences, 2023
Knee alignment after total knee arthroplasty (TKA) is essential for implant survival. Several studies on accelerometer-based navigation systems have given controversial results, with or without improvement in knee alignment.
Léopold Joseph, Cécile Batailler, Sébastien Lustig, Elvire Servien   +3 more
doaj   +1 more source

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +1 more source

Weaving Intelligence: Thermally Drawn Multimaterial Fibers Toward AI‐Enabled Smart Textiles

Advanced Materials, EarlyView.
Thermally drawn multimaterial fibers are rapidly advancing as intelligent structural units for next‐generation smart textiles. Integrating multimaterial architectures with neuromorphic and spiking‐neural‐network principles enables fabrics that can sense, compute, and adapt autonomously.
Vuong Dinh Trung, Jiaxiang Yi, Hieu Nguyen‐Duc, Tien Nu Hoang Lo, Weili Zhao, Chaoqun Dong, Fabien Sorin, Baris Caglar, Lei Wei, Tung Nguyen‐Dang   +9 more
wiley   +1 more source

Use of a gyroscope/accelerometer data logger to identify alternative feeding behaviours in fish [PDF]

, 2014
We examined whether we could identify the feeding behaviours of the trophic generalist fish Epinephelus ongus on different prey types (crabs and fish) using a data logger that incorporated a three-axis gyroscope and a three-axis accelerometer.
Nanami, Atsushi, Yamaguchi, Tomofumi, Arai, Nobuaki, Nakashima, Yuuki, Takebe, Takayuki, Soyano, Kiyoshi, Noda, Takuji, Mitamura, Hiromichi, Sato, Taku, Kawabata, Yuuki   +9 more
core   +1 more source

Advanced Design for Weakly Coupled Resonators by Automatic Active Optimization

Advanced Materials Technologies, EarlyView.
An Automatic Active Optimization (AAO) strategy integrates machine learning predictors and genetic algorithms in a closed‐loop workflow. By iteratively expanding its dataset with new discoveries, AAO overcomes the limits of conventional methods. This approach finds superior microstructural designs beyond the initial sample space. We demonstrate this on
Wei Yue, Yuan Gao, Fanping Sui, Jason Wang, Megan Teng, Peggy Tsao, Huicong Deng, Yande Peng, Liwei Lin   +8 more
wiley   +1 more source