Results 21 to 30 of about 3,458,432 (336)

The axis of rotation of the ankle joint [PDF]

open access: yesThe Journal of Bone and Joint Surgery. British volume, 1989
The axis of the talo-crural joint was analysed by roentgen stereophotogrammetry in eight healthy volunteers. Examinations were performed at 10 degrees increments of flexion and pronation/supination of the foot as well as medial and lateral rotation of the leg.
A, Lundberg   +3 more
openaire   +2 more sources

Robust estimation of dominant axis of rotation [PDF]

open access: yesJournal of Biomechanics, 2007
A simple method is developed for robustly estimating a fixed dominant axis of rotation (AoR) of anatomical joints from surface marker data. Previous approaches which assume a model of circular marker trajectories use plane fitting to estimate the direction of the AoR.
Lillian Y, Chang, Nancy S, Pollard
openaire   +2 more sources

Effective position of the rotation axis of an ankle stretching machine and the effect of misalignment

open access: yesJournal of Biomechanical Science and Engineering, 2020
The mechanical rotation axes of joint exercisers are believed to operate better when they match the biomechanical axes of human joints. However, there are few studies regarding ankle stretching machines.
Yuma SHIRAISHI   +5 more
doaj   +1 more source

Reappearance of change in time of rotation axis with simulation in baseball-type acceleration sensor

open access: yesNihon Kikai Gakkai ronbunshu, 2021
We develop an output simulator for a baseball-type acceleration sensor in which one three-axis sensor for low acceleration and three sensors for high acceleration are installed.
Rio HIYAMA   +4 more
doaj   +1 more source

Cone-Beam Imaging with Tilted Rotation Axis: Method and Performance Evaluation.

open access: yesMedical Physics (Lancaster), 2020
PURPOSE The recently introduced robotic x-ray systems provide the flexibility to acquire cone-beam CT (CBCT) data using customized, application-specific source-detector trajectories. We exploit this capability to mitigate the effects of x-ray scatter and
Chu-Min Zhao   +7 more
semanticscholar   +1 more source

In-Hand Object Rotation via Rapid Motor Adaptation [PDF]

open access: yesConference on Robot Learning, 2022
Generalized in-hand manipulation has long been an unsolved challenge of robotics. As a small step towards this grand goal, we demonstrate how to design and learn a simple adaptive controller to achieve in-hand object rotation using only fingertips.
Haozhi Qi   +4 more
semanticscholar   +1 more source

On the Cosmic Rotation Axis [PDF]

open access: yesModern Physics Letters A, 1997
Recently, Nodland and Ralston reported to have discovered a cosmic axis. We argue that their axis is supported by an earlier independent observation on the spin axes of galaxies in the Perseus-Pisces supercluster and explainable within the framework of Godel's cosmology.
openaire   +5 more sources

Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field [PDF]

open access: yesNature Communications, 2021
In transition metal compounds, due to the interplay of charge, spin, lattice and orbital degrees of freedom, many intertwined orders exist with close energies.
Ying Xiang   +7 more
semanticscholar   +1 more source

Measurement of rotational property for a baseball in flight with acceleration sensors

open access: yesNihon Kikai Gakkai ronbunshu, 2019
We attempt to measure the rotational characteristics of a ball in flight by using a baseball-like ball with a built-in acceleration sensor unit which consists of one three-axis sensor for low G and three sensors for High G.
Hiroyuki NAGAOKA   +4 more
doaj   +1 more source

THE RESEARCH OF VARIATION OF THE PERIOD AND PRECESSION OF THE ROTATION AXIS OF EGS (AJISAI) SATELLITE BY USING PHOTOMETRIC MEASUREMENT

open access: yesOdessa Astronomical Publications, 2014
The light curves of EGS Ajisai with temporal resolution of 20 ms referred to the time scale UTC (GPS) with an error of at most 0.1 ms were obtained. The observed flashes are produced when the mirrors which cover the spinning satellite’s surface reflect ...
N. Burlak   +5 more
doaj   +1 more source

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