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81
Prediction Algorithm of Parameters of Toe Clearance in the Swing Phase
Published 2019-01-01“…The input data were the angles, angular velocities, and angular accelerations of the hip, knee, and ankle joints in the sagittal plane at the beginning of the swing phase. …”
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82
A frog-inspired robot based on liquid-vapor phase transition
Published 2025-06-01“…Experimental results demonstrate a maximum joint angle change of 148°, an angular velocity of 0.88 rad/s, and a maximum propulsion speed of 127 mm/s. …”
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83
Snake Robot Gait Design for Climbing Eccentric Variable-Diameter Obstacles on High-Voltage Power Lines
Published 2025-04-01“…The robot exhibits no abrupt changes in joint angles, smooth angular velocity profiles without sharp peaks, and impact-free joint interactions, ensuring reliable performance in complex environments.…”
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84
Advanced Optimization Methods for Nonlinear Backstepping Controllers for Quadrotor-Slung Load Systems
Published 2025-01-01“…It models the quadrotor and slung load as rigid bodies and point mass, respectively. Using Lyapunov theory and the backstepping technique, it designs the controller optimally with precise thrust and angular velocity control laws to ensure the closed-loop system remains asymptotically stable. …”
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85
Exothermic thermosolutal convection in a nanofluid-filled square cavity with a rotating Z-Fin: ISPH and AI integration
Published 2025-03-01“…The Z-shaped fin, centrally positioned, rotates at a fixed angular velocity, maintaining lower temperature and concentration levels, while the cavity's vertical walls exhibit elevated thermal and solutal conditions. …”
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86
Light scattering and microphysical properties of atmospheric bullet rosette ice crystals
Published 2025-08-01“…One of the most relevant cirrus ice crystal habits is a polycrystalline bullet rosette, where individual bullets radiate from the same nucleation point. Here, the link between the crystal morphology of atmospheric bullet rosettes and their radiative properties in the form of the asymmetry parameter (<span class="inline-formula"><i>g</i></span>) is experimentally investigated using correlated high-resolution in situ stereo images of individual rosettes and their corresponding angular scattering functions measured by the airborne Particle Habit Imaging and Polar Scattering (PHIPS) cloud probe. …”
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87
Piroxicam fails to reduce myocellular enzyme leakage and delayed onset muscle soreness induced by isokinetic eccentric exercise
Published 1996-01-01“…Exercise consisted of eight stages of five maximal contractions of the knee extensor and flexor muscle groups of both legs separated by 1 min rest phases, on a Kin Trex device at 60°/s angular velocity. The subjective presence and intensity of DOMS were evaluated using a visual analogue scale immediately after, and 24 and 48 h after each test. …”
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88
Construction of a WMR for Trajectory Tracking Control: Experimental Results
Published 2013-01-01“…The high-level control law is based on an input-output linearization scheme for the robot kinematic model, which provides the desired angular velocity profiles that the WMR has to track in order to achieve the desired position (x*,y*) and orientation (φ*). …”
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89
Modeling of kinematic characteristics of a mobile antenna of a spacecraft in a two-stage pivoting device
Published 2023-12-01“…The kinematic characteristics of the AD in the form of the current values of its rotation angles and angular velocities and accelerations (according to the corresponding control channels) are determined from the conditions for combining the LS with the axis of the directional diagram of the AD for the case of a two-stage pivoting device with mutually orthogonal axes of rotation of the AD.…”
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90
The Relative Inertiality - The Relative Mechanical Movement of Bodies in Outer Space
Published 2025-06-01“…The present work aims to demonstrate that the two fundamental theorems of mechanics, the momentum theorem and the angular momentum theorem, remain valid if we use the relative distances and velocities between these celestial bodies. …”
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91
Inter-turn Short-circuit Fault Diagnosis and Severity Estimation for Five-phase PMSM
Published 2025-06-01“…Subsequently, the postfault current, back electromotive force, electrical angular velocity, q1-axis current reference and the fault diagnosis index are selected as the input signals of CNN to estimate the short-circuit turn ratio. …”
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92
Overlooked effects of wavefront reception with or without speed limit, from aberration to time measurement
Published 2024-12-01“…A general approach to wavefront reception applicable to any type of wave allows to point out some overlooked aspects and ignored consequences of established theories. …”
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93
Efficiency Analysis and Optimization of Two-Speed-Region Operation of Permanent Magnet Synchronous Motor Taking into Account Iron Loss Based on Linear Non-Equilibrium Thermodynamic...
Published 2024-11-01“…The IPMSM is considered a linear power converter (PC) that is multiple-linearized at operating points with a given angular velocity and load torque. …”
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94
A Microscale Framework for Seismic Stability Analysis of Bridge Pier Rocking Isolation Using the Discrete Element Method
Published 2024-07-01“…The study shows the effectiveness of rocking isolation through a comparative analysis of acceleration and angular velocity under varying seismic intensities, with acceleration reduction up to 70% for piers and 60% for the deck in a high-intensity scenario, affirming the potential of rocking isolation as a viable seismic mitigation strategy. …”
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95
Study on Impact Excitation and System Dynamic Characteristics of Shield Machine Planetary Gear Train
Published 2025-03-01“…When the sun gear and planetary gear have an offline impact, the meshing line between the sun gear and planetary gear changes, causing changes in the planetary gear rotation speed and leading to an impact within the planetary gear and gear ring. The angular velocity of the sun gear fluctuated slightly due to the impact of kinetic energy transmission and frictional energy loss, causing tooth-side clearance between the sun gear and planetary gear. …”
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96
Research on step-by-step visual servo control system of anchor drilling robot
Published 2025-03-01“…Thirdly, a novel step-by-step visual servo control strategy was developed: a position-based visual control model governs the manipulator's coarse positioning near target holes, followed by an image-based visual servo model that establishes mapping relationships between feature point velocities (derived from circumscribed rectangle vertices of drilling holes) and joint velocities, enabling precise centering alignment. …”
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97
K Dwarf Radius Inflation and a 10 Gyr Spin-down Clock Unveiled through Asteroseismology of HD 219134 from the Keck Planet Finder
Published 2025-01-01“…HD 219134 is the first main-sequence star cooler than 5000 K with an asteroseismic age estimate and will serve as a critical calibration point for stellar spin-down relations. We show that existing calibrated prescriptions for angular momentum loss, incorporating weakened magnetic braking with asteroseismically constrained stellar parameters, accurately reproduce the observed rotation period. …”
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98
Development of Electrohydraulic Proportional Valve Model for Precise Steering Control in Autonomous Tractors
Published 2025-02-01“…The proposed model was validated through experiments conducted on a tractor equipped with an EHPV, evaluating hydraulic characteristics across various engine speeds and steering angular velocities. The simulation model was utilized to analyze the priority valve control flow characteristics of the automatic steering system and the hydraulic response of the EHPV under step inputs at specific engine speed points. …”
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99
An innovative methodology in analyzing certain pendulum oscillators
Published 2025-05-01“…The use of multiple phase portraits aims to explore stability and instability near equilibrium points by examining the interaction between expanded and cyclotron frequencies, modulated by the magnetic field, for varying azimuthal angular velocities.…”
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100
Physical and Muscular Performance in a Professional Soccer Player with a Posterior Cruciate Ligament Injury Following an Isokinetic Exercise Program: A Case Report
Published 2024-10-01“…The concentric mode was used to evaluate quadriceps and hamstrings performance isokinetically at angular velocities of 60 °/s, 120 °/s, and 300 °/s. …”
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