Last edited by Zulunos
Thursday, July 16, 2020 | History

2 edition of Instability detector for quiet standing. found in the catalog.

Instability detector for quiet standing.

Xavier Tortolero Baena

Instability detector for quiet standing.

by Xavier Tortolero Baena

  • 78 Want to read
  • 23 Currently reading

Published .
Written in English


About the Edition

Incorporating a measure of stability into a portable sensor has a number of clinically relevant applications. This study investigated the feasibility of developing a real-time assessment tool to monitor balance during quiet standing. Forward and backward perturbations were performed on 16 able-bodied subjects using a pulley system attached to the subjects" waist. A linear relationship was found between the maximum centre of pressure (COP) velocity and the maximum COP position caused by the perturbations. As the maximum COP velocity occurs considerably before the maximum COP position, this model serves as an instability predictor. A sensor that measures COP velocity can use the model to predict a maximum COP position and compare it with an instability threshold. Results show that the proposed model is a viable solution to quantitatively measure stability in real-time.

The Physical Object
Pagination83 leaves.
Number of Pages83
ID Numbers
Open LibraryOL19214555M
ISBN 100494021438

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Instability detector for quiet standing by Xavier Tortolero Baena Download PDF EPUB FB2

A quietstanding index is developed for tracking the postural sway of healthy and diabetic adults over a range of ages. Several postural sway features are combined into a single composite feature C that increases with age features are ranked based on the r 2-values of their linear regression models, and the composite feature is a weighted sum of selected sway features with optimal Cited by: A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

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The predicted growth rate of the KBI instability is on the order of O(1/10) of the ion magnetic drift frequency which depends on the azimuthal mode number, and plasma temper. Additionally, in the case of a quiet stance, interference of individual signal systems is implemented, including for instance closed eyes, or standing on unstable foam surface (Kim et al., ).

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The original object, called the progenitor, either. The proposed instability detection algorithm will be implemented in a sensor system using insole sheets in shoes with minitur- ized pressure sensors by which the COPv can be continuously measured.

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Jo ze Rakovec Kranj, May 4, Abstract Kelvin-Helmholtz instability (KHI) is an instability at the interface between two parallel streams with di erent velocities and densities, with the heavier File Size: KB.growth time of the KH instability is on the order of 14 minutes. 3. Kelvin-Helmholtz instability The KH instability in fluids arises when the fluids exhibit velocity discontinuity over an interface between fluids in relative motion.

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