Results 151 to 160 of about 105,657 (309)

Multiecho Fat‐Water Spiral MR Elastography With Distributed Encoding for Simultaneously Imaging Brain and Skull Displacement

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To introduce a novel multiecho, multishot spiral MR elastography (MRE) sequence to image brain and skull displacement simultaneously using a joint fat‐water image reconstruction and distributed motion encoding. Methods Multiple echo times were implemented into a high‐resolution multishot spiral MRE sequence to capture water‐based brain
Alexa M. Diano, Alex M. Cerjanic, Olivia M. Bailey, Mary K. Kramer, Joy Mojumder, Ruth J. Okamoto, Philip V. Bayly, Dzung L. Pham, Curtis L. Johnson   +8 more
wiley   +1 more source

Research on Calibration Method of Triaxial Accelerometer in Speed Calculation of Maglev Train

机车电传动, 2019
For the error of the accelerometer leads to inaccurate calculation of the vehicle speed in the MEMS accelerometer-based maglev train speed calculation scheme, a new method of error calibration was proposed.
Chuanming SUN, Shaolong XU, Weiwei GAN, Zhengfang ZHANG, Jie JIANG   +4 more
doaj  

Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He, Guolai Yang, Quanzhao Sun, Shuli Li   +3 more
wiley   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source

Interaction Between Vortex‐Induced Vibrations and Base Vibrations in Piezoelectric Harvesters

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In the present era, powering sensors using green energy is a significant challenge. One promising solution for the power supply of small sensors relies on piezoelectric energy harvesters excited by vortex‐induced vibrations (VIVs) generated by wind.
Michele Tonan, Ilaria Palomba, Alberto Pasetto, Alberto Doria   +3 more
wiley   +1 more source

Validating hip- and wrist-ActiGraph accelerometer cut-points for physical activity intensities in people living with coronary heart disease. [PDF]

PLoS One
Freene N, Clark B, Bäck M, Niyonsenga T, Pumpa K, Rangaraj A, Wong TH, Joseph S, Khan A, Davey R, Lönn A.   +10 more
europepmc   +1 more source

A Passive Low‐Frequency, High‐Sensitivity Diamagnetic Levitation Accelerometer

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Despite the great potential of diamagnetic levitation accelerometers in detecting low‐frequency and weak motion, there is still a demand to further enhance their sensitivity for geophysical and microgravity applications. In this study, a straightforward structural modulating approach is presented to enhance the sensitivity of diamagnetic ...
Yuanping Xu, Yang Wang, Lu Yang, Jin Zhou, Zhiqiang Zhang, Yanxiao Lei   +5 more
wiley   +1 more source

Genetic influences on accelerometer-measured physical activity and sedentary time in children: sex-specific patterns from a Swedish twin study. [PDF]

Sci Rep
Helgadóttir B, Wang R, Kuja-Halkola R, Wiklund CA, Ekblom Ö, Ekblom MM.   +5 more
europepmc   +1 more source

Gesture Spotting Using Wrist Worn Microphone and 3-Axis Accelerometer [PDF]

, 2005
Tröster, G., Ward, J.A., Paul Lukowicz, Jamie A. Ward, Gerhard Tröster, Lukowicz, P.   +5 more
core   +1 more source

Inertial‐Based LQG Control: A New Look at Inverted‐Pendulum Stabilization

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Linear‐quadratic Gaussian (LQG) control is a well‐established method for optimal control through state estimation, particularly in stabilizing an inverted pendulum on a cart. In standard laboratory setups, sensor redundancy enables direct measurement of configuration variables using displacement sensors and rotary encoders. However, in outdoor
Daniel Engelsman, Itzik Klein
wiley   +1 more source