Results 261 to 270 of about 2,782,327 (303)
Some of the next articles are maybe not open access.
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
openaire +2 more sources
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
openaire +4 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +1 more source
Sports Biomechanics, 2019
Different thresholds have been used to determine the start of the force-time analysis during countermovement jump testing. This study examined the influence of the jump starting threshold on the reliability and magnitude of loaded countermovement jump (CMJ) performance variables.
Alejandro Pérez-Castilla +2 more
openaire +2 more sources
Different thresholds have been used to determine the start of the force-time analysis during countermovement jump testing. This study examined the influence of the jump starting threshold on the reliability and magnitude of loaded countermovement jump (CMJ) performance variables.
Alejandro Pérez-Castilla +2 more
openaire +2 more sources
Fast Folding of RNA Pseudoknots Initiated by Laser Temperature-Jump
Journal of the American Chemical Society, 2011RNA pseudoknots are examples of minimal structural motifs in RNA with tertiary interactions that stabilize the structures of many ribozymes. They also play an essential role in a variety of biological functions that are modulated by their structure, stability, and dynamics.
Ranjani, Narayanan +3 more
openaire +2 more sources
Initial correlations of the multiplicative process, driven by random jumps
Journal of Physics A: Mathematical and General, 1986We consider a vector-valued stochastic process, which is multiplicatively driven by the Markov jump process. We obtain a closed expression for the average of the vector process by solving the Burshtein equation for the marginal average. It is shown that the solution for \(t>t_ 0\) requires knowledge of an initial correlation operator, due to the finite
Arnoldus, H. F., Nienhuis, G.
openaire +2 more sources
On the jumping problems of a circular thin plate with initial deflection
Applied Mathematics and Mechanics, 1987In this paper, the jumping problems of a circular thin plate with initial deflection are studied by using ‘the method of two variables’[3],[4] proposed by Jiang Fu-ru and the method of the normal perturbation (in this paper (1.1), (1.2)). We obtain Nth-order uniformly valid asymptotic expansion of the solution of this problem ((1.66), (1.67)). When the
Qin Sheng-li, Zhang Ai-shu
openaire +1 more source
The Effect of Initial Momentum Flux on the Circular Hydraulic Jump
Journal of Fluids Engineering, 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
VISHWANATH, KP +3 more
openaire +2 more sources