نتایج جستجو برای: body acceleration

تعداد نتایج: 776253  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Eric D Tytell Chia-Yu Hsu Thelma L Williams Avis H Cohen Lisa J Fauci

Animal movements result from a complex balance of many different forces. Muscles produce force to move the body; the body has inertial, elastic, and damping properties that may aid or oppose the muscle force; and the environment produces reaction forces back on the body. The actual motion is an emergent property of these interactions. To examine the roles of body stiffness, muscle activation, a...

Journal: :Gait & posture 2013
Adam Goodworth Aditi Chandan Hannah Chase Elizabeth Foster Heather Francoeur Jenna Michaud Kathryn Terry

Whenever the body is moving in a curvilinear path, inertial torques resulting from centripetal accelerations act on the body and must be counteracted to maintain stability. We tested the hypothesis that healthy subjects orient their center of mass in the position where gravitational torques offset the inertial torques due to centripetal accelerations. Ten healthy subjects stood on a platform th...

2009
Miikka Ermes Eila Ovaska András Balogh Sergio Campos Adrian Noguero András Pataricza

Biosignals are such signals that quantify the physiological processes of a living organism. Classification of biosignals aims at inferring the physiological condition of the organism based on the biosignals obtained from it. In this thesis, the classifications of two biosignals originating from the human body are studied in detail: the electroencephalogram (EEG) and acceleration signals recorde...

ژورنال: مواد پرانرژی 2017
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In this study, effects of longitudinal and rotational accelerations on the Internal Ballistic Solid Propellant Rocket are investigated. First, a quasi one-dimensional flow is considered to drive governing equations. By assuming semi- permanent flow and neglecting heat transfer through the walls, at each time increment the governing equations are integrated along the length of motor. Then, using...

2017
Dominik Schürmann Arne Brüsch Stephan Sigg Lars C. Wolf

Secure spontaneous authentication between devices worn at arbitrary locations on the same body is a challenging, yet unsolved problem. We propose BANDANA, the first-ever implicit secure device-to-device authentication scheme for devices worn on the same body. Our approach leverages instantaneous variations in acceleration patterns from the user’s gait to extract alwaysfresh secure secrets. It e...

Journal: :Journal of fish biology 2009
L Nendick A Grant M Gardner M Sackville C J Brauner A P Farrell

Swimming performance was assessed in juvenile pink salmon Oncorhynchus gorbuscha (body mass<5.0 g) using five different protocols: four constant acceleration tests each with a different acceleration profile (rates of 0.005, 0.011, 0.021 and 0.053 cm s(-2)) and a repeated ramped-critical swimming speed test. Regardless of the swim protocol, the final swimming speeds did not differ significantly ...

2015
Paul G Savage

Traditional Newtonian mechanics treats gravity as one of the forces contributing to the acceleration of a body in motion. Newtonian natural motion is defined relative to an abstract inertial space where gravity is non-existent and free body velocity motion remains constant unless modified by applied force. With this interpretation, gravitational force is an embedded characteristic whose effect ...

2012
Yukiko TEZUKA Mutsuto KAWAHARA

The purpose of this research is to obtain an estimation of behavior of an elastic body based on errorneous observations. To do this, the ensemble Kalman filter finite element method is used. In numerical study, a three dimensional elastic body is considered. The Iwatayama tunnel is employed. This construction site is located in Gifu prefecture, in Japan. The external force is applied to the tun...

2015
Varun Sharma Rajneesh Narula

This paper inspect the trouble in recognition of exercise and also discover the burned calories after exercise. Our topic and motive of research to detect a problem, how walking, jogging and running effect on the human body using personalize algorithms. Pedometer is a device which is used to count the step while walking. This device may be used as a hardware device which attached with the body ...

Journal: :Journal of magnetic resonance imaging : JMRI 2008
Christopher J Hardy Randy O Giaquinto Joseph E Piel Kenneth W Rohling Luca Marinelli Daniel J Blezek Eric W Fiveland Robert D Darrow Thomas K F Foo

PURPOSE To determine whether the promise of high-density many-coil MRI receiver arrays for enabling highly accelerated parallel imaging can be realized in practice. MATERIALS AND METHODS A 128-channel body receiver-coil array and custom MRI system were developed. The array comprises two clamshells containing 64 coils each, with the posterior array built to maximize signal-to-noise ratio (SNR)...

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