Results 1 to 10 of about 1,005,816 (291)
Subtalar joint kinematics defined by a rotational axis translating along the posterior talocalcaneal facet [PDF]
Scientific ReportsThe subtalar joint is essential for the normal function of the human foot during bipedal walking, with its kinematics being pivotal for understanding foot biomechanics, disorders, and evolution.
Naomichi Ogihara +8 more
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Influence of constraint mechanism on kinematics, contact mechanics, and polyethylene wear in dual-axis rotating hinge and ball-and-socket knee prostheses: a finite element study [PDF]
Frontiers in Bioengineering and BiotechnologyBackgroundSevere metaphyseal bone defects following revision total knee arthroplasty or tumor resection often require highly constrained knee prostheses. Although rotating hinge knee (RHK) designs provide reliable stability, polyethylene wear and aseptic
Jinwei Liu +5 more
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International Journal for Computational Civil and Structural Engineering, 2022 The urgent task of earthquake-resistant construction is to improve the methods of calculating the seismic effect. Currently, most calculations for seismic effects are made taking into account only the translational components of the earthquake. However,
Andrej Reshetov, Ekaterina Lokhova
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Micromachines, 2021 Angular acceleration sensors are attracting attention as sensors for monitoring rotational vibration. Many angular acceleration sensors have been developed; however, multiaxis measurement is still in a challenging stage.
Rihachiro Nakashima, Hidetoshi Takahashi
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The axis of rotation of the ankle joint [PDF]
The 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
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Novel Magnetic Suspension Platform with Three Types of Magnetic Bearings for Mass Transfer
Energies, 2022 For ultra-precision, large stroke, and high start/stop acceleration, a novel magnetic suspension platform with three types of magnetic bearings is proposed. The structure and working principle of the novel platform are introduced.
Shinan Cao +6 more
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Research Advances on the Rotational Doppler Effect of Vortex Electromagnetic Waves
Leida xuebao, 2021 Traditional radars can detect moving targets using the Doppler effect. However, traditional radars have shadow areas in detecting the angular motion of the rotating targets.
Zhongyi GUO +3 more
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Robust estimation of dominant axis of rotation [PDF]
Journal 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
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Evaluation of Synchronous Motion in Five-axis Machining Centers With a Tilting Rotary Table
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2007 This paper proposes a new method for evaluating the synchronous inaccuracy of a translational axis and a rotational axis in five-axis controlled machining centers with a tilting rotary table.
Masaomi TSUTSUMI +3 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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