Results 71 to 80 of about 8,546 (220)

A multicenter, video‐EEG‐based validation of a multimodal wearable device for focal seizure detection in adults: The SeizeIT2 study

Epilepsia Open, EarlyView.
Abstract Objective Currently available wearable devices for detecting focal seizures primarily target major motor seizures or involve semi‐invasive subscalp implants. There is a pressing need for accurate, non‐invasive methods to detect diverse focal seizures for long‐term, out‐of‐hospital monitoring.
Lauren Swinnen, Miguel Bhagubai, Christos Chatzichristos, Yvonne Weber, Stefan Wolking, Ummehan Ermis, Elisabeth Schriewer, Andreas Schulze‐Bonhage, Matthias Dümpelmann, Nicolas Zabler, Nino Epitashvilli, Benno Mahler, Arjune Sen, Mkael Symmonds, Mark P. Richardson, Andrea Biondi, Francisco Sales, Abuhaiba Sulaiman I, Maarten De Vos, Wim Van Paesschen   +19 more
wiley   +1 more source

Combined Estimation of Structural Displacement, Rotation and Strain Modes on a Scaled Glider

Applied Sciences
Incorporating sensors such as microelectromechanical system (MEMS)-based inertial measurement units (IMUs) and strain gauges into aircraft structures has the potential to complement ground vibration testing results and improve the tracking of structural ...
Andres Jürisson, Bart J. G. Eussen, Coen de Visser, Roeland De Breuker   +3 more
doaj   +1 more source

Initialization algorithm for spatial orientation quaternion in Rodrigues-Hamilton parameters

Advanced Engineering Research, 2018
Introduction. The correction time reduction for the spatial orientation evaluation of a solid under the orientation system initiation is considered.
M. A. Isaev, A. M. Isaev, N. V. Kudinov, R. S. Mironenko   +3 more
doaj   +1 more source

A Large‐Area, Stretchable Accelerometer Array for Spatial Assessment of Chest Compressions in Cardiopulmonary Resuscitation

FlexTech, EarlyView.
A large‐area stretchable accelerometer array enables multi‐point monitoring of chest compression depth and thoracic contour reconstruction during CPR, offering high spatiotemporal resolution for dynamic deformation tracking and providing a new pathway toward intelligent, feedback‐based resuscitation systems. ABSTRACT High‐quality chest compressions are
Tianrun Xu, Jin Ji, Chongyuan Huang, Yiming Chen, Peng Zhao, Jizhou Song   +5 more
wiley   +1 more source

Mobile robot indoor dual Kalman filter localisation based on inertial measurement and stereo vision

CAAI Transactions on Intelligence Technology, 2019
This study presents a novel navigation method designed to support a real-time, efficient, accurate indoor localisation for mobile robot system. It is applicable for inertial measurement units (IMU) consisting of gyroscopes, accelerometers, and magnetic ...
Lei Cheng, Biao Song, Yating Dai, Huaiyu Wu, Yang Chen   +4 more
doaj   +1 more source

Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems

Laser &Photonics Reviews, EarlyView.
This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev, Eliran Talker, Yefim Barash, Noa Mazurski, Uriel Levy   +4 more
wiley   +1 more source

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

Lubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

Temperature drift suppression for micro‐electro‐mechanical system gyroscope based on vibrational‐displacement control with harmonic amplitude ratio

Micro & Nano Letters
Micro‐electro‐mechanical system gyroscope detection output is susceptible to drift due to ambient temperature variations. Furthermore, the drive‐mode vibration amplitude is affected by the signal pickup circuit and structural parameters, which ...
Feng Bu, Rui Feng, Shuwen Guo, Ming Zhou, Yiwang Wang, Feng Wang   +5 more
doaj   +1 more source

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama, Marina Murillo‐Arcila, Julio Puerta‐Fernández   +2 more
wiley   +1 more source

Sliding Mode Control in Aerospace Applications: A Survey

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley   +1 more source