نتایج جستجو برای: length of jump

تعداد نتایج: 21175740  

K Neisi M Shafai Bejestan

Formation of hydraulic jump is necessary for dissipation of the excess kinetic energy downstream of spillways and gates. Hydraulic jump stilling basins of sudden expansion are one of the energy dissipater structures which are used where the available tail water depth is less than the required sequent depths. In the present study to further reduce the hydraulic jump sequent depths ratio, a rough...

Journal: :journal of water sciences research 2013
k neisi m shafai bejestan

formation of hydraulic jump is necessary for dissipation of the excess kinetic energy downstream of spillways and gates. hydraulic jump stilling basins of sudden expansion are one of the energy dissipater structures which are used where the available tail water depth is less than the required sequent depths. in the present study to further reduce the hydraulic jump sequent depths ratio, a rough...

اسلامی, منصور, حاتمی جوشقان, زهرا,

Objective: A better understanding of the role of muscle fatigue in lower limb stiffness during performance will provide a strong foundation for the development of optimal training intervention programs. This study aimed to investigate the effect of fatigue on ankle and knee joints and leg stiffness during a 30-scontinuous vertical jump test. Methods: Fifteen female volleyball players without h...

Azadian, Elaheh, Eftekhari, Nasrin, Mohammad Zaheri, Rafe,

Objective The purpose of the present study was to investigate the center of pressure (CoP) movements during the jump-landing while defending on the net in professional volleyball players and compare it with beginner volleyball players. Methods In this research, 10 professional volleyball players and 10 beginner volleyball players voluntarily participated in this study. The CoP movements in ant...

ژورنال: علوم آب و خاک 2015
احمدی, آلاله, هنر, تورج,

One of the most important problems in the design of a stilling basin is determination of the exact location of the hydraulic jump or stabilization of the hydraulic jump. In the present study, the effects of different forms of end sills on hydraulic jump characteristics were studied. The experiments were carried out for three different forms of end sills, rectangular, square and stepped, with th...

Journal: Physical Treatments 2021

Purpose: Various kinematics and kinetics methods have been proposed for the assessment of jumping ability as a critical skill in professional volleyball players, but little is known about the accuracy and differences between these methods. Therefore, the objective of the current study was to answer the question “Is there any difference between the results of various kinetic methods in the asses...

Amir Mohamad Amini Fakhraden Hasaloei, Khald Dodman Mir Masom Sohrabi

There is a substantial evidence that plyometric training significantly increases muscular strength and vertical jump. Due to the vigorous nature of this type of training, however, there is a risk of incurring musculoskeletal injuries. Therefore, conducting plyometric exercise programs in an aquatic environment might lead to significant improvements in vertical jump with possibly a lower risk of...

2017
V. V. Palyulin Vladimir N. Mantsevich R. Klages R. Metzler A. V. Chechkin Dept. of Chemical Engineering Biotechnology University of Cambridge Physics Dept. Moscow State University Queen Mary U. of London School of Math. Sci. Inst. for Physics Astronomy U. of Potsdam Akhiezer Inst. for Theoret. Physics NSC KIPT Kharkov

We address the generic problem of random search for a point-like target on a line. Using the measures of search reliability and efficiency to quantify the random search quality, we compare Brownian search with Lévy search based on long-tailed jump length distributions. We then compare these results with a search process combined of two different long-tailed jump length distributions. Moreover, ...

Various studies have shown that the external focus of attention is better than the internal focus of attention. But, so far no study has been investigated the level of electrical activity of the rectus abdominus muscle as a trunk stabilizer muscle. Therefore, the purpose of this study was to investigate the effect of focus of attention on electromyography activity of the rectus abdominus muscle...

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