The media raises our children and form an important part of their daily lives. It is impossible to imagine life without the presence of the media. They are the main source of information, content, and topics on upbringing, education, culture, politics, and entertainment. The media are socializing agent which impact on society, children and youth is significant. Accordingly, there should be a greater social intention for media education and training. The role of media education in our schools is still underused, often marginalized and sometimes misunderstood by both teachers, preschool teachers, children and young people. The number of media, internet users and profiles and social networks is growing every day, as evidenced by numerous studies, but there is not enough education for the media nor education for critical thinking. Therefore, in this paper we tried to explore the media habits of children and youth in the local community, with special reference to the time that they spent on the Internet, mostly on social networks, and whether the time spent affected their daily interactions with the environment, friends, family and, at the end of the day, their succes in school. We where interested in how much they used social network, at what age they created their profiles, and how free they felt in providing information about themselves and others through the media. According to the results, children create their profiles on social networks at a very early stage, even when they are not ready or educated for it. In addition, children are very open to the virtual world of communication with the people they do not know in real life, even to meet strangers without being aware of possible manipulation, false profiles, violence and the like. There is a clear awareness among most respondents about the need for media education, regardless of the difference in the amount of time that they spend on social networks, as well as a clearly articulated stand on the need to introduce media education as part of compulsory education in schools.

of the age group of 6–12 years, and 10 patients of the age group of 12–18 years. Conclusions: Data suggest that pediatric cases of COVID-19 in adolescents have more severe symptoms than in the other age groups; however, in general children tend to cope much more easily with the virus than adults.

Introduction: Conventional cytogenetics by the use of standard karyotyping allows the study of numerical and structural chromosomal aberrations. Haematological malignancies include a number of cancer types that originate in the blood cells of the bone marrow or of the lymphatic system. Cytogenetic methods are traditionally used for the sake of diagnosis and prognosis of these diseases. However, with the ever more frequent use of molecular methods in the diagnostic laboratories, the importance of the conventional cytogenetic analysis in the diagnosis of haematological diseases needs to be reassessed. Aim: To evaluate the role of cytogenetic methods in the diagnosis of haematological malignancies. Materials and Methods: A retrospective analysis of cytogenetic findings of 146 patients with various haematological malignancies was performed. All of the findings were made over a period of three years at the Centre for Genetics at the Medical Faculty of the University of Sarajevo in Bosnia and Herzegovina. Microsoft Excel 2019 was used for the analysis and presentation of data in the form of tables and graphs. Results: The results of the present study showed that the use of conventional cytogenetic analysis is a good diagnostic method for 50.68% (74) of patients in whom chromosomal aberrations were detected. Conclusion: Cytogenetics remains the most comprehensive method for assessing chromosomal abnormalities due to its ability to detect clinically relevant aneuploidies and additional cytogenetic abnormalities that cannot be detected by locus-specific assays.

There is a view that playing sports is positively related to pupils' academic achievement. Results of studies worldwide indicate this correlation, while few studies have been done in Bosnia and Herzegovina on this problem. The current study aims to expand on findings from previous studies by examining associations between (1) mode: active vs. recreational); (2) type: individual vs. team based and (3) a particular kind of sports and academic achievement particularly math achievement among middle school children. Population involves middle school pupils in two urban areas in Bosnia and Herzegovina and research sample consists of 1036 female and 1055 male pupils wanting to take part in study voluntarily. Kruskal-Wallis and Wilcoxon test were conduced to obtain results. Results show that middle school pupils who are actively involved in sports have better overall midterm academic success as well as better mathematics achievement compared to those who are involved in sports recreationally or not at all (p < 0.001). On the other hand, differences do not occur between pupils who are engaged in team or individual sports. Also, pupils who practice football were found to have lower school performance compared to pupils who practice some of the other sports.

The purpose of this research is to provide some insights into socio-demographic determinants of predicting the likelihood of residents propensity to travel. Using the quota sampling technique, data collection was carried out from October to December 2019, yielding a sample of 632 valid responses. To gain a better understanding of the sociodemographic determinants of propensity to travel, we, primarily, use descriptive statistical analysis, chi-square test and probit regression model. The research findings have revealed that age, education and household income characteristics may be considered as antecedents of travel propensity of residents. Having in mind the impact that Covid-19 pandemic has on sector of tourism worldwide, and based on the results of this research, policymakers' efforts should be directed to promoting local tourist destinations and to enhancing tourism literacy of residents.

The purpose of this research is to provide some insights into relationship between decisionmaking heuristics and perceived quality of life. Using the purposive sampling technique, data collection was carried out, in Bosnia and Herzegovina, from June to October 2020, yielding a sample of 319 valid responses. To gain a better understanding of the relationship between decision-making heuristics and the perceived quality of life, we, primarily, use descriptive statistical analysis, chi-square test and probit regression model. The research findings have revealed positive association between all three decision-making heuristics, i.e. representativeness, anchoring, availability, and perceived quality of life. Furthermore, the group with above-average perceived quality of life have higher representativeness, anchoring, and availability scores comparing to the group with below-average perceived quality of life. These differences are statistically significant. Furthermore, out of three decision-making heuristics components, availability, or a heuristic whereby people make judgments about the likelihood of an event based on how easily a similar example comes to mind, seems to be the strongest predictor of the perceived quality of life. Memories that are easily recalled are often insufficient for estimating likelihood of occurring similar events again in the future. In that respect, availability may produce low-quality information in the decision making process. Ultimately, this may lead to bad decisions.

The reverse engineering technologies facilitate development of new or redesign of existing products, which has been presented in this paper on an example of dental impression trays redesign. There are different types of trays available today, in order to ensure proper retention, stability and support in the impression taking procedure. Disposable lower and upper trays have been used as the initial samples for 3D scanning, which was performed by the GOM Atos Compact Scan 8M optical scanner. The CAD models were build using Geomagic and SolidWorks, while the redesign consisted of introducing new perforations in order to allow the impression material to expand through the holes and so be held securely in place. Finite element analysis has been used to investigate the effect of introducing these design changes to structural rigidity. Due to the need to consult a prosthetist about the acceptability of the redesign, the models have been printed by the 3D printer Zortrax M200 Plus.