3D printing or additive manufacturing is one of the newest technologies that has begun to be used for production of anatomical models in veterinary medicine. The main aim of this research was to evaluate the total cost required for 3D printing of different anatomical models and the cost-effectiveness of use of these technologies in practice. For purpose of this study, we evaluated a cost of 3D printed model of the human heart, inner ear, cross-section of the animal cell and spinal cord, sheep, cow and cat brain and complete dog model with internal organs. The costs were calculated separately for raw material consumption and personnel operative work. The results show that 3D printing technologies are cost-effective for the production of anatomical models, and the total cost depends mostly on working time of the personnel.

BACKGROUND Nursing is a profession frequently organized around shift work in order to guarantee the continuity of care throughout the 24 hours. However, working in shifts is coupled with the desynchronization of circadian rhythms and may result in adverse effects on nurses' health. Our previous work has demonstrated the presence of increased stress levels, reduced coping abilities and diminished life enjoyment in shift work nurses in comparison to those working only in accordance with the daily schedule. Here we aimed to appraise the effects of shift work on their overall health status. SUBJECTS AND METHODS We used a comparative cross-sectional approach on a sample of 157 hospital nursing professionals at the University Clinical Hospital Mostar. Study subjects were divided into two groups: a total of 51% study subjects were included in a specific type of shift work (i.e., 12-hour day shift / 24 hours off / 12-hour night shift / 48 hours off), while the remaining 49% adhered to the conventional 7-hour daily schedule. The instrument used was a Standard Shiftwork Index (SSI), together with a comprehensive appraisal of participants' socio-demographic characteristics. Descriptive and inferential statistical methods were applied, and statistical significance was set at p≤0.05 (two-sided). RESULTS The results have shown that nurses in shift work were significantly more burdened with gastrointestinal disturbances (p<0.001); more specifically, there was a higher frequency of appetite loss (p=0.003), heartburn (p=0.03), nausea (p<0.01) and weight gain (p=0.05) when compared to nursing professionals in the day shift. Conversely, there were no statistically significant differences in cardiovascular health between these two groups. In addition, nurses in shift work more frequently presented with headaches (p=0.001) and varicose veins of lower extremities (p=0.037) in comparison to nurses working only in accordance with the daily schedule. CONCLUSIONS Shift work can adversely influence psychophysical homeostasis, resulting not only in substandard performance of nursing staff, but also potentially hazardous effects on their overall health status. More specifically, we recognized shift work as a substantial risk factor for gastrointestinal and metabolic disorders in nurses; likewise, the increased prevalence of headaches may consequently have a detrimental effect on social and family relationships. All of this should be tackled in a holistic and organized way, together with any additional psychological/sleep issues.

In an immense market struggle, the only effective way to build a long-term competitive advantage is to provide a high level of quality. Offering quality to the market, the organization creates loyal consumers on the basis of which it achieves its profitability, growth and development. The research presented in this paper is aimed at determination of the impact of quality on improving business performance and customer satisfaction. Correlation analysis confirmed this influence on the basis of obtained statistically significant mutual relations between the analyzed variables. Quality was shown to have an impact on improving the business performance of the organization, primarily on profitability through the improvement of leadership and relationship management. The impact of quality on customer satisfaction was also confirmed, where the engagement of people and the management of mutual relations had the greatest impact on consumer confidence. The research confirmed that the training of employees in terms of quality had a statistically significant impact on improving customer satisfaction, if it is conducted in an efficient manner.

SUMMARY The prevalence of asthma in adults varies widely around the world, ranging from 0.2% to 21.0%. Population-based studies suggest that from 20% to 70% of people with asthma in the community remain undiagnosed. On the opposite side of the spectrum, 30–35% of adults and children diagnosed with asthma do not have current asthma. Overdiagnosis of current asthma can occur due to various reasons: 1. Physicians’ failure to confirm airflow limitation; 2. New signs and symptoms in patients with long-term clinical remission of previous asthma; 3. Alternative diagnoses that mimic signs and symptoms of asthma. The most common differential diagnosis of asthma in adults is vocal cord dysfunction, airflow obstruction (e.g. tumors and foreign bodies), congestive heart failure, chronic obstructive pulmonary disease (COPD), chronic sinusitis and infection of upper airways. The consequences of the overdiagnosis of asthma are: 1. Not diagnosing and treating the actual disease; 2. Prolonged use of medication for asthma treatment in patients without asthma leads to the occurrence of adverse effects and complications caused by medication; 3. Unnecessary costs of treatment or increased insurance rates .

In athletic sprint disciplines, the segments of start and start acceleration occupy an important place that significantly generates the final outcome of the race. The question is to what extent the start time of the reaction (latent time) has a contribution to achieving the results of sprint disciplines. The aim of the current research was to determine the influence and connection between the reaction time and the result performance of running in the disciplines of 100 m, 200 m, 400 m finalists of ten world championships. The results of a total of 456 finalists (231 men) and 225 (women) competitors who competed in the final races of the championships (from Edmonton, 2001 to Doha, 2019) were analyzed. The evaluation of the start reaction time and sprint results was based on reports officially published by the International Association of Athletics Federation (IAAF). Central and dispersion parameters were calculated for all variables. The relationship between reaction time and sprint results was calculated using the Pearson correlation coefficient, and simple regression analysis determined the direct influence of reaction time on the result success and calculated the relevant coefficients for the level of statistical significance p < 0.05. Based on the obtained results, a positive but low correlation was recorded between the mean values of the 100 m sprint results and the reaction time in men (r = 0.230p<0.044), which was also confirmed by regression analysis. In other correlations and values of regression coefficients, no significant numerical values of the influence of reaction time on the result success were recorded in both categories of finalists.