Results 171 to 180 of about 61,493 (215)
GEMDAT: A Python Toolkit for Site-Resolved Diffusion Analysis in Solid-State Molecular Dynamics
Lavrinenko AK +8 more
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The Effect of Initial Momentum Flux on the Circular Hydraulic Jump
Journal of Fluids Engineering, Transactions of the ASME, 2015Earlier studies on the circular hydraulic jump have shown that the radial position of the hydraulic jump depends on the flow rate, gravity, and fluid viscosity. In this study, results from numerical simulations and experiments on circular hydraulic jumps are presented and through analysis, it is shown that the momentum flux is an additional controlling
Rama Govindarajan, Govindarajan Rama
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The Effect of Initial Knee Angle on Concentric-Only Squat Jump Performance
Research Quarterly for Exercise and Sport, 2017There is uncertainty as to which knee angle during a squat jump (SJ) produces maximal jump performance. Importantly, understanding this information will aid in determining appropriate ratios for assessment and monitoring of the explosive characteristics of athletes.This study compared SJ performance across different knee angles-90º, 100º, 110º, 120º ...
Lachlan J G Mitchell +2 more
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Influence of Initial Foot Dorsal Flexion on Vertical Jump and Running Performance
Journal of Strength and Conditioning Research, 2010Several studies (on an inclined platform or with special shoes) have reported improved jump performance when the ankle was in a dorsiflexion (DF) position. The present study aims to test whether shoes inducing moderate DF modify vertical jump performance and energy cost.
Raphaël Faiss, Philippe Terrier
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Neuromechanical strategies employed to increase jump height during the initiation of the squat jump
Journal of Electromyography and Kinesiology, 2004The maximal height attained in a vertical jump is heavily influenced by the execution of a large countermovement prior to the upward motion. When a jump must be executed without a countermovement, as in a squat jump, the maximal jump height is reduced. During such conditions, the human body may use other strategies in order to increase performance. The
Hasson, Christopher. +4 more
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Vibration and Jumping of Ferrofluid Marbles under an Initial Magnetic Perturbation
Langmuir, 2023Liquid marbles are being promoted as a replacement for conventional droplets in digital microfluidics. Liquid marbles can be remotely controlled by an external magnetic field if ferrofluid is utilized as their liquid cores. In this study, the vibration and jumping of a ferrofluid marble is experimentally and theoretically investigated.
Mahbod Mohammadrashidi +3 more
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Locust-inspired jumping robot with the initial jumping posture control
2016 IEEE International Conference on Real-time Computing and Robotics (RCAR), 2016To improve the jumping performance, this paper presents a locust-inspired jumping robot with initial body posture adjustment and self-righting mechanisms. A segmental gear, stretching and triggering the spring for storage and rapid release of energy, is used for the jumping mechanism.
Diansheng Chen +3 more
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On initial instantaneous jumps of singular systems
IEEE Transactions on Automatic Control, 1995Summary: This paper is concerned with instantaneous jumps in the state trajectory of a singular system. it is shown that such jumps generically exist at the initial time due to inconsistent initial states. The formula for the jumps is derived, which indicates that the jumps linearly depend on the initial state.
Wanquan Liu, Wei-Yong Yan, Kok Lay Teo
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Optimization of the Initial Deformed Shape of a Circular Elastic Jumping Robot
2020 3rd IEEE International Conference on Soft Robotics (RoboSoft), 2020A circular elastic robot, which can move and jump by deforming its outer shell was studied in this paper. Previous research has confirmed that the initial deformed shape of the robot significantly affects its jumping height. However, the deformed shape needed for the highest jump has not been confirmed.
Takahiro Matsuno, Shinichi Hirai
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Coupling of flight initiation to the jump in locusts
Journal of Comparative Physiology A, 19861. In adult locusts' wing opening for flight occurs soon after a jump is triggered. Previous studies have shown that the interval between the triggering of a jump and the initial wing movement (or the start of elevator muscle activity) is often too short for either the loss of tarsal contact with the ground or the self-generated air stream on the ...
K. G. Pearson +2 more
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