Results 41 to 50 of about 143,049 (302)

Measurement of Gravitomagnetic and Acceleration Fields Around Rotating Superconductors [PDF]

, 2006
It is well known that a rotating superconductor produces a magnetic field proportional to its angular velocity. The authors conjectured earlier, that in addition to this so-called London moment, also a large gravitomagnetic field should appear to explain
Marhold, K., Plesescu, F., Seifert, B., Tajmar, M.   +3 more
core   +2 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Texoskeletons: Developing the Fundamental Technologies for Creating Intelligent Soft Robotic Clothing With Integrated 1D Sensors and Actuators

Advanced Functional Materials, EarlyView.
ABSTRACT Traditional wearable exoskeletons rely on rigid structures, which limit comfort, flexibility, and everyday usability. This work introduces the fundamental technologies to create the first soft, lightweight, intelligent textile‐based exoskeletons (Texoskeletons) built using 1D sensors and actuators.
Amy Lukomiak, Rameesh Bulathsinghala, Jack Varga, Shuxin Meng, Kalana Marasinghe, Imaad Refai, Biyon Fernando, Amitkumar Patel, Chamika M. Halloluwa‐Arachchige, Carlos Oliveira, Arash M. Shahidi, Zahra Rahemtulla, Alexander Turner, Ziyun Ding, Bernard X. W. Liew, Andy Kerr, Ezio Preatoni, Theo Hughes‐Riley, Ishara Dharmasena, Pasindu Lugoda   +19 more
wiley   +1 more source

Simple Calibration of Three-Axis Accelerometers with Freely Rotating Vertical Bench

Sensors
This article presents a dynamic calibration procedure for triaxial accelerometers characterized by a very simple and low-cost setup, where the calibration bench consists of a vertically, freely rotating wheel. To keep the setup as simple as possible, the
Federico Pedersini
doaj   +1 more source

Measuring physical activity using accelerometry in 13-15-year-old adolescents : the importance of including non-wear activities [PDF]

, 2011
Objective: The present study aimed to examine the impact of non-wear activities registered in diaries when using accelerometers to assess physical activity (PA) in young adolescents. Design: Data arise from a large-scale cross-sectional study on PA.
Cardon, Greet, De Bourdeaudhuij, Ilse, De Meester, Femke, Deforche, Benedicte, Ottevaere, Charlene   +4 more
core   +2 more sources

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

Accelerometers in Monitoring Systems for Rail Vehicle Applications: A Literature Review

Applied System Innovation
This document comprehensively analyses the literature on accelerometers used in monitoring systems designed for rail vehicle applications. It reviews the current research on this topic and highlights key findings, methodologies, and trends in the field ...
Emil Tudor, Ionuț Vasile, Daniel Lipcinski, Constantin Dumitru, Nicolae Tănase, Florian Drăghici, Gabriel Popa   +6 more
doaj   +1 more source

Home detection of freezing of gait using Support Vector Machines through a single waist-worn triaxial accelerometer [PDF]

, 2017
Among Parkinson’s disease (PD) symptoms, freezing of gait (FoG) is one of the most debilitating. To assess FoG, current clinical practice mostly employs repeated evaluations over weeks and months based on questionnaires, which may not accurately map the ...
Cabestany Moncusí, Joan, Català Mallofré, Andreu, Moreno Aróstegui, Juan Manuel, Pérez López, Carlos, Rodríguez Martín, Daniel Manuel, Samà Monsonís, Albert   +5 more
core   +2 more sources

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

Hyperactivity and motoric activity in ADHD: Characterization, assessment, and intervention

Frontiers in Psychiatry, 2014
The aim of the present literature review is threefold. (1) We will review theories, models, and studies on symptomatic hyperactivity and motoric activity in ADHD.
Caterina eGawrilow, Caterina eGawrilow, Jan eKuehnhausen, Johanna eSchmid, Gertraud eStadler   +4 more
doaj   +1 more source