Results 11 to 20 of about 213,899 (261)
Illusory Oscillation of the Central Rotation Axis [PDF]
i-Perception, 2019 In this study, we report a novel visual illusion for rotational motion, in which the central rotation axis of a partially invisible (apparent) square is perceived as exhibiting oscillatory rotation. To investigate the cause of this illusion, we measured the central position of a static apparent shape using an adjustment method (Experiment 1) and ...
Yutaka Nakajima +2 more
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Journal 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
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On the Cosmic Rotation Axis [PDF]
Modern 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.
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Measurement of rotational property for a baseball in flight with acceleration sensors
Nihon 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
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Odessa 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
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A Low-Cost MEMS Missile-Borne Compound Rotation Modulation Scheme
Sensors, 2021 Rotation modulation (RM) has been widely used in navigation systems to significantly improve the navigation accuracy of inertial navigation systems (INSs).
Xiaoqiao Yuan +6 more
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Nonlinear dynamics of rotor of an auto-balancing ball device, considering eccentricity and changes in horizontal axes of rotation [PDF]
E3S Web of Conferences, 2023 This study is devoted to the dynamics of an auto-balancing device (ABD) when the rotor rotates at critical angular speeds. In this article, a model of an auto-balancing device (ABD) is proposed. The rotor is not only eccentric about the symmetry axis but
Mirsaidov M. +2 more
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Joint angle measurement of manipulator and error compensation based on an IMU sensor
The Journal of Engineering, 2019 To detect the joint angle of the manipulator accurately, a measuring method based on an IMU sensor is proposed. The sensor's attitude angles and corresponding rotation matrix are obtained according to the data of three-axis gyroscope and three-axis ...
Tianlin Zhang +4 more
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Shape Reconstruction and Rotation Axis Estimation of Small Bodies Based on Structure-from-Motion [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesShape reconstruction and rotation axis estimation of small bodies essential for both engineering applications and scientific investigations. This paper presents a Structure-from-Motion-based (SFM) method for small body shape reconstruction and rotation ...
H. Xie +5 more
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Foot & Ankle Orthopaedics, 2022 Background: A previous study on 2-dimensional evaluation of the subtalar joint functioning in varus ankle osteoarthritis concluded that varus deformity was compensated for by the subtalar joint during early stages but not in the advanced stages. Although
Hiroaki Kurokawa MD, PhD +7 more
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