The aim of this research is to determine the differences between the aerobic functional abilities of football players from different positions in the team, which should serve as a starting point in planning and monitoring the training process of football players. VO2max, as a basic parameter of functional abilities, was obtained by applying a laboratory progressive test on the treadmill. The sample of respondents was composed of 57 respondents (GOD = 22.47 ± 3.78SD), football players of clubs competing in the first and second leagues of Serbia from the area of Vojvodina, of which 8 goalkeepers, 16 defensive, 17 midfielders and 16 attackers. To test the functional capabilities (oxygen consumption - VOmax), we used a test of progressive continuous load on the treadmill with increasing load per minute through a "breath-by-breath" gas analyzer (Quark PFT ErgoCPET, Cosmed, Italy), which gave data on ventilation and spiroergometric parameters of the subjects by different positions in the team. Anthropometric measures of body weight- (TM) and body height- (TV) were applied to test the morphological characteristics of the subjects. SPSS 20.0 software package was used for data processing. In order to determine the statistically significant differences of the measured variables between football players by positions, a one-factor anova of different groups, the level of statistical significance (p <0.05) was used. The obtained results of maximum oxygen consumption indicated that there is a statistically significant difference in aerobic abilities between goalkeepers and players in other positions, and they are certainly a consequence of the physiological requirements placed before them and the different training process. The highest mean value of VO2 max had midfielders (53.3 ± 1.9 ml / kg / min), followed by attackers (52.9 ± 4.4 ml / kg / min), defensive players (51.8 ± 3, 3 ml / kg / min) while the lowest values were recorded in the goalkeeper (50.5 ± 1.8 ml / kg / min). There is a logical conclusion that the need for running midfielders is the greatest, and the goalkeeper the least, and that the results are the result of training processes and different requirements for individual positions in the team.

The funerary stela of Marcus Aurelius Bitus, a soldier of the Legio IV Flavia Felix, was discovered in Palmotićeva Street, Belgrade, during construction work undertaken in 1989-1990. The stela is typologically classified as being of the architectural type, and is topped by a pediment decorated with lions. To date, it remains the only known example of an intact stela with a pediment not only in Singidunum, but also along the entire Upper Moesian Limes. This paper provides evidence of the fact that this type of stelawith-pediment was not uncommon, either within Singidunum itself or throughout its wider surroundings. Additionally, the structural and iconographic features of the stela of Marcus Aurelius Bitus are studied, and the issue of artistic influences from Pannonia and Noricum, which undoubtedly influenced the stela's creation in a local workshop in what was then Singidunum, are also considered

Background: The COVID-19 pandemic has had significant different consequences for everyday life of every human being, as well as on the functioning of health, educational and scientific institutions. Objective: The aim of this article is to provide information on impact of the COVID-19 pandemic on scientific research in the biomedical sciences, and publications, as wll as impact on education in medcine and clinical training. Methods: Papers published of influence of the COVID-19 pandemic on the main aim were searched and analyzed. Results: Many basic research labs quickly tuned their priorities and continud to study different aspects of SARS-CoV-2 infection and COVID-19. Biomedical sciences have become an important area in the fight against the SARS-CoV-2 virus, due to the unique challenges posed by the pandemic, including epidemiological aspects, immune mechanisms of the disease, clinical parameters of this essentially multisystem disease, virus properties, infection mechanisms, and later work on finding vaccines and everything that is needed. There are several studies that point to the negative impact of the pandemic on biomedical education, especially in the acquisition of practical clinical skills among medical students. The negative impact, both on basic education in medicine, and also on the acquisition of practical knowledge within various clinical disciplines, especially surgery, unfortunately continues. The COVID-19 pandemic has mobilised researchers worldwide on a scale and timeframe that have never been seen before for one specific disease. The number of COVID-19 manuscripts being submitted for peer review has also greatly increased. Unfortunately, research and publications on COVID-19 has so far often not been of high quality and many unprinted preprints have been rushed to spread without sufficient oversight. The time between submission and publication of articles on COVID-19 has decreased on average by around 50%. This analysis also showed that the time to publication for research not related to COVID-19 has remained unaffected, and that the number of research articles unrelated to COVID-19 has dropped considerably, with COVID-19 predominating in receipt of funding and attention from the research community. Conclusion: Impact of the COVID-19 pandemic on education and scientific research in biomedical sciences are negative. Almost all aspects of medical education were affected by the COVID-19 pandemic. The negative impact, both on basic education in medicine, and also on the acquisition of practical knowledge within various clinical disciplines, especially surgery, unfortunately continues. There has been no disease in the history of medicine about which several professional and scientific articles have been written in a relatively short time. Research and publications on COVID-19 has often not been of high quality. Research articles from many medical field unrelated to COVID-19 were less published. A pandemic with a "paperdemic" will be even more complicated to manage if it progresses in an uncontrolled manner and is not properly scrutinized.

In recent years, the sharing economy has become a new buzzword, providing various business opportunities and challenges to conventional businesses. It is characterized by the transformation of conventional business sectors and many companies are already facing the pressure of adapting their operations to the changing conditions. Human resource management, especially when it comes to experts and knowledge workers, is among the affected business activities. In particular, due to the apparent high demand, this type of workforce has the opportunity to share services among many businesses. Therefore, human resource managers should tackle the issue of cultivating employee organizational identification to increase employee retention and achieve the desired performance. In this regard, this paper proposes a model that binds human resource management practices to employee organizational identification, innovative behaviour, knowledge sharing, and finally, employee job performance. The model is estimated using the survey method and structural equation modelling technique for data analysis. The results imply that selective recruiting, participation in decision-making, and rewarding contribute to employees' organizational identification, while training does not directly affect it. The findings, therefore, indicate that adequate human resource management practices, mainly through the simultaneous impact of the critical capabilities examined by this model, can serve as a foundation for business success in the sharing economy.

INTRODUCTION Breast cancer is the most common malignancy in women. Modern research attempts to investigate the relationship between psychoemotional parameters and the length of survival of breast cancer patients. Understanding the factors which affect a higher level of resilience can have important clinical implications and can represent a guiding principle for designing psychological interventions that would accelerate recovery and improve the quality of life of cancer patients. To explore the relationship between resilience and quality of life of women with breast cancer. METHODS The study was conducted at the Clinic of Oncology of the University Clinical Hospital Mostar, which included 60 subjects. Objective realization was achieved through using the socio-demographic questionnaire purposely made for this research, the quality of life questionnaire WHQOL-BREF and the psychological resilience questionnaire CD-RISC-25. RESULTS Subjects treated with radiotherapy achieved statistically significantly higher scores on subscales of the quality of life: mental health, social relations, and the environment. No statistically significant correlations were found between the level of resilience and results in the domains of quality of life. CONCLUSION There is not a statistically significant association between resilience levels and quality of life in patients with breast cancer.