Results 61 to 70 of about 14,722 (279)

What Lies Beneath One’s Feet? Terrain Classification Using Inertial Data of Human Walk

open access: yesApplied Sciences, 2019
The objective of this study was to investigate if the inertial data collected from normal human walk can be used to reveal the underlying terrain types.
Muhammad Zeeshan Ul Hasnain Hashmi   +3 more
doaj   +1 more source

Microresonator Brillouin Gyroscope [PDF]

open access: yesNonlinear Optics, 2015
Using counter-propagating Brillouin lasers in a high-Q chip-based resonator, rotation measurement with a sensitivity of 15 degree/hour/ Hz is demonstrated. This is close to navigation grade performance and surpasses prior micro-optical systems by 40X.
Li, Jiang   +2 more
openaire   +2 more sources

Frequency Modulated Gyroscopes [PDF]

open access: yes, 2013
MEMS gyroscopes for consumer devices, such as smartphones and tablets, suffer from high power consumption and drift which precludes their use in inertial navigation applications.
Kline, Mitchell
core  

Daily‐Life, Sensor‐Derived Tremor Measures Are Sensitive to Progression in Early Parkinson's Disease

open access: yesAnnals of Neurology, EarlyView.
Objective Sensitive outcome measures are critical for evaluating the efficacy of novel treatments for Parkinson's disease (PD). In this study, we assess the sensitivity to change of sensor‐derived daily‐life tremor measures over 2 years in unmedicated and medicated persons with early PD.
Nienke A. Timmermans   +10 more
wiley   +1 more source

PD_Manager: an mHealth platform for Parkinson's disease patient management

open access: yesHealthcare Technology Letters, 2017
PD_Manager is a mobile health platform designed to cover most of the aspects regarding the management of Parkinson's disease (PD) in a holistic approach.
Kostas M. Tsiouris   +11 more
doaj   +1 more source

Recent Advances in Stimulated Brillouin Scattering in Integrated Photonics

open access: yesAdvanced Physics Research, EarlyView.
This review systematically surveys recent advances in stimulated Brillouin scattering (SBS) within integrated photonics. It begins by elucidating the fundamental mechanisms of stimulated coupling between photons and acoustic phonons in nanoscale waveguides, enhanced by the photoelastic and moving boundary effects.
Songyue Liu   +8 more
wiley   +1 more source

Toward Convenient and Accurate IMU-Based Gait Analysis

open access: yesSensors
While inertial measurement unit (IMU)-based systems have shown their potential in quantifying medically significant gait parameters, it remains to be determined whether they can provide accurate and reliable parameters both across various walking ...
Mohamed Boutaayamou   +7 more
doaj   +1 more source

A Simple Attitude Unscented Kalman Filter: Theory and Evaluation in a Magnetometer-Only Spacecraft Scenario

open access: yesIEEE Access, 2016
A quaternion-based attitude unscented Kalman filter is formulated with quaternion errors parameterized by small angle approximations and is applied to a filter with a state vector consisting of the attitude quaternion and the gyro bias vector. The filter
Murty S. Challa   +2 more
doaj   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li   +12 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

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