The aim of this study was to identify the effect of somatotype and body composition variables on leg explosive power of college level men students. The sample consisted of 500 young college students, divided into two groups: athletes (N=250) undergoing Bachelor of Physical Education course whose mean age 23.86 ± 0.36 years; and nonathletes (N=250) college students who do not take part regular p...

Sargent plot, summarizes part of one of the pioneers experiments on nuclear beta decay. Here it is proposed to be used as a motivation, to teach undergraduate students some basic features of the weak interactions. This is done by considering only elementary aspects of special relativity and quantum theories. 1 – Introduction It has been elapsed a time interval of eighty years, since B. W. Sarge...

Hydraulic jump on adverse stilling basin is an unstable phenomenon which causes some complexities in controlling of the   jump. This paper considers the stability of free hydraulic jump on adverse stilling basins from a theoretical point of view. A minimum value of upstream Froude number is needed to produce the free hydraulic jump on adverse stilling basins which was presented by a theoretical...

this collection of essays uses the lens of rational expectations theory to examine how governments anticipate and plan for inflation, and provides insight into the pioneering research for which thomas sargent was awarded the 2011 nobel prize in economics. rational expectations theory is based on the simple premise that people will use all the information available to them in making economic dec...

in a control structures, it is often preferred to minimize the gate width while utilizing the canal width in full for a stilling basin. therefore, to reach this, a gradually diverging stilling basin may be used. in this study, the effect of broad-crested sill on the expanding hydraulic jump in a rectangular channel was investigated. a total number of 79 tests were carried out for the range of i...

Background and Aims: The accurate mechanisms of ankle instability cannot be assessed in the absence of reliable knowledge about ground reaction force (GRF) variables. The purpose of this study was to evaluate the test-retest reliability of GRF variables during forward and lateral jump-landing in volleyball players with functional ankle instability (FAI). Methods: Eighteen professional volle...

background and objectives: it has been shown that a bout of jumping exercise with weighted vests increases the subsequent countermovement jump height. however, it is not clear whether the improvement in jump height is due to the enhancement of joint power or due to other mechanisms such as neural adaptations. methods: to investigate this dichotomy, we tested the acute neuromechanical changes fo...