نتایج جستجو برای: jump conditions

تعداد نتایج: 864896  

Journal: :computational methods for differential equations 0
javad farzi sahand university of technology

this paper concerns with the modeling and construction of a fifth order method for two dimensional acoustic wave equation in heterogenous media. the method is based on a standard discretization of the problem on smooth regions and a nonstandard method for nonsmooth regions.the construction of the nonstandard method is based on the special treatment of the interface using suitable jump condition...

Azade Ghavamifar Mahmood Shafai Bejestan Maryam Khajavi

In the present study, the six legged concrete (SLC) elements are placed at the bed of a flume downstream of a chute in different layouts, densities and number of longitudinal rows of SLC elements. Each test was run for different flow conditions (Froude numbers ranged 5.3 to 8.1). During each test, the water surface profile, the roller length and the jump length measured.  Applying the experimen...

Journal: :asian journal of sports medicine 0
slavko rogan department of health, discipline of physiotherapy, bern university of applied sciences, bern, switzerland; academy for integrative physiotherapy and training education, grenzach-wyhlen, germany; department of health, discipline of physiotherapy, bern university of applied sciences, bern, switzerland. tel: +41-318483536, fax: +41-318483521 lorenz radlinger department of health, discipline of physiotherapy, bern university of applied sciences, bern, switzerland caroline imhasly department of health, discipline of physiotherapy, bern university of applied sciences, bern, switzerland andrea kneubuehler department of health, discipline of physiotherapy, bern university of applied sciences, bern, switzerland roger hilfiker school of health sciences, university of applied sciences and arts western switzerland valais, wallis, switzerland

conclusions the he jump mat can be recommended in relation to the validity of constraints. in this study, only a part of the quality criteria were examined. for the final recommendation it is advised to examine the he jump mat on the other quality criteria (test-retest reliability, sensitivity change). background in the field of vertical jump diagnostics, force plates (fp) are the reference sta...

Journal: :علوم زیستی ورزشی 0
فاطمه صیدی کارشناس ارشد فیزیولوژی ورزشی،گروه فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه تربیت دبیر شهید رجایی عباس عبدالملکی دانشجوی دکتری فیزیولوژی ورزشی، گروه فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه بوعلی سین مهرداد عنبریان دانشیار، گروه بیومکانیک ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی، دانشگاه بوعلی سینا رضا قهرمانی دانشجوی کارشناسی ارشد فیزیولوژی ورزشی، گروه فیزیولوژی ورزشی، دانشکدۀ تربیت بدنی و علوم ورزشی

the purpose of this study was to determine the intensity influence of perform one set half squat on vertical jump performance and muscle electrical activity in adolescent athletes. the subjects were 12 adolescent boys athletes. the subjects performed one set of dynamic half-squat using low and high intensities (li= low intensity with 40% 1rm, hi= high intensity with 80% 1rm), and a control (c) ...

Journal: :Journal of applied biomechanics 2007
Niell G Elvin Alex A Elvin Steven P Arnoczky

Modern electronics allow for the unobtrusive measurement of accelerations outside the laboratory using wireless sensor nodes. The ability to accurately measure joint accelerations under unrestricted conditions, and to correlate them with jump height and landing force, could provide important data to better understand joint mechanics subject to real-life conditions. This study investigates the c...

Objective: Dynamic Knee Valgus (DKV) causes many acute and chronic knee injuries during deceleration and landing in sports activities and can affect the athletes’ specific skills. This study aims to investigate the effect of 6 weeks of progressive jump-landing training on jump shooting accuracy and knee valgus angle in male basketball players with DKV. Methods: This is a quasi-experimental stu...

2013
Sukwon Kim

A study was performed to evaluate effects of elastic energy stored pre-stretch on the mechanical work output while performing vertical jump. Eight male volunteers of age between 21 29 years old participated in the present study. The present study hypothesized that the vertical jump height during countermovement jumps (CMJ) would be higher than that during squat jump (SJ). During squat jump, a v...

2010
XIAOMING HE TAO LIN YANPING LIN

Abstract. This paper is to develop immersed finite element (IFE) functions for solving second order elliptic boundary value problems with discontinuous coefficients and non-homogeneous jump conditions. These IFE functions can be formed on meshes independent of interface. Numerical examples demonstrate that these IFE functions have the usual approximation capability expected from polynomials emp...

2004
Adam Shwartz Alan Weiss

The theory of large deviations for jump Markov processes has been generally proved only when jump rates are bounded below, away from zero [4, 8, 12]. Yet various applications of interest do not satisfy this condition. We describe several classes of models where jump rates diminish to zero in a Lipschitz continuous way. Under appropriate conditions, we prove that the sample path large deviations...

Journal: :J. Comput. Physics 2006
Yongcheng Zhou Shan Zhao Michael Feig Guo-Wei Wei

This paper introduces a novel high order interface scheme, the matched interface and boundary (MIB) method, for solving elliptic equations with discontinuous coefficients and singular sources on Cartesian grids. By appropriate use of auxiliary line and/or fictitious points, physical jump conditions are enforced at the interface. Unlike other existing interface schemes, the proposed method disas...

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