Presented in this thesis are the results from an integrated experimental and modeling study on damage cascade formation in ion bombarded solids. The molecular dynamics (MD) simulations were performed by using LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator). In one subtask, we studied damage cascade interactions caused by two 2 keV Si atoms simultaneously bombarding a crystalline Si substrate. We found that the enhanced displacement creation appears primarily in the thermal spike stage with all atoms at energies less than the displacement threshold. The study lead to the conclusion that the cascade interactions increased local melting by increasing energy deposition density, thus promoting defect creation. In another subtask, we studied radiation damage in Si0.8Ge2 layer caused by Agn clusters with number of atoms in a cluster, n, taking values from 1 to 4. It showed that strained SiGe, a material known to have poor radiation tolerance, still follows the overlap model, rather than the direct amorphization model. In the third subtask, MD simulation has shown that crowdion defects formed in bcc Fe are propagating along <111> directions. Crowdion defect starts to form when damage cascade reaches the maximum volume and contributes a second peak in defect buildups with increasing times. Upon defect recombination, crowdion defects shrink and form <111> oriented dumbbell defects at the crowdion end. In subsequent structural relaxation, <111> dumbbell defects rotate and finally align themselves with <110> directions. The surviving dumbbell defects represent a significant contribution to the final defect distribution after thermal spike formation. The overall research reveals atomic scale details of damage buildups at early stages of defect developments. Although the target systems cover both semiconductor materials and metal, these results show that MD simulation is a powerful tool to show the details at a spatial and time scale beyond experiments. These details are very important to develop understanding the precursor formation in defect clustering in such a case.

Title: Participation of the players on the team game performance in ZBL matches Objectives: My work deals with the proportion of female players on the team's performance in the game of basketball teams in the women's top basketball competition - ZBL. My main aim is to explore these trends from the season 1998/1999 to 2012/2013. The file of observed extraleague players was divided into three categories (Czech players under 20 years, foreigners, Czech players over 20 years). At the same time I determined the monitored characteristics (number of players, numbers of minutes played, numbers of points scored, coefficients of validity) that are signifiant for the research. This work follows my Bachelor thesis ( 2012). Methods: The study is based on the secondary analysis of statistical data of different teams that participated in the seasons from 1998/1999 to 2012/2013 in the Women's Basketball League (ZBL). For further processing I used basic statistical and comparative methods, whereby the situation in the Czech women's basketball is being mapped out. The data from the Women's Basketball League can be found on the website of Czech Basketball Federation, where they are available. Results: The given results have confirmed all three set hypotheses - an increase in players from abroad and their significant...