This paper is concerned with numerical study of the two-sided lid-driven fluid flow in a staggered cavity. The ANSYS FLUENT commercial software was used for the simulation, In one of the simulated cases the lids are moving in opposite directions (antiparallel motion) and in the other they move in the same direction (parallel motion). Calculation results for various Re numbers are presented in the form of flow patterns and velocity profiles along the central lines of the cavity. The results are compared with the existing data from the literature. In general, a good agreement is found, especially in the antiparallel motion, while in the parallel motion the same flow pattern is found, but the velocity profiles are slightly different. [Projekat Ministarstva nauke Republike Srbije, br. 46010]

The sample consisted of 40 female participants extracted from a population of elementary school students from Nis, age 12 ± 6 months, who regularly participated in their physical education classes. The basic aim of the research was to determine the influence of programmed contents of regular physical education classes on the development of the motor agility and functional abilities of the participants. The research problem was the evaluation of whether under the influence of physical education in the curriculum we can achieve a statistically significant increase in the level of the motor agility and functional abilities of the participants. By using the student t-test for small dependent samples and the canonical discriminant analysis, we determined that under the influence of physical exercise, at the end of a three-month period of physical education classes, a statistically significant increase in the level of motor agility and functional abilities of the participants was determined.

The research was carried out on a sample of 55 female high school students from Nis, 15 years of age (± 6 months). The aim of the research was to determine the canonical correlations between morphological dimensions, on the one hand, and tests for the evaluation of repetitive strength on the other, among the female students. The problem of this research was the evaluation of the influence of morphological dimensions on the achieved results for repetitive strength. 10 anthropometric measurements of morphological characteristics were used, which define longitudinal dimensionality and dimensionality of the skeleton, transversal dimensionality of the skeleton and circular dimensionality and body mass. Repetitive strength was evaluated by means of three tests. The results of the canonical correlation analysis have shown that a significant canonical factor can be found between the morphological dimensions (as the predictor system) and explosive strength (as the criterion system), along with a high corre analysis.