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.

Introduction : Obstructive Sleep Apnea (OSA) represents the complete or partial obstruction of the airway. Clinically OSA manifests as sleepiness during the day, heavy snoring, and waking up during the night due to lack of air. Obesity, gender and orthodontic anomalies are listed in the literature as the etiologic factor of OSA. Aim : This study aimed to find the correlation in the analyzed studies between OSA and orthodontic anomalies in non-obese adults. Material and methods : The electronic search of the database was performed (PubMed and Google Scholar) to find relevant articles that correlate orthodontic anomalies with OSA. Keywords included: obstructive sleep apnea, orthodontic anomalies, cephalometric analysis, impact, association, body mass index, obesity, adults, non-obesity. Included criteria: non-obesity, a study published from 1999-2019, a study in English, full text. Results : Two hundred papers included keywords. The number of papers that included the full set criteria was nine. These nine papers were analyzed in detail. Conclusion : Analyzed articles showed that there is a correlation between Obstructive sleep apnea (OSA) and orthodontics malocclusion in non-obese adults. by time of publication of articles, availability of research, a language in which they were published, and data relevance.

The purpose of this study was to evaluate the relationship between knee extensor and flexor muscles strength and vertical jump in professional female volleyball players. Forty-one female volleyball players participated in this study. Isokinetic PT and was measured at 60°/s, whilst CMJ performance using a force plate. The participants were later divided to WG (weaker group - PT/BW<2) and SG (stronger group - PT/BW>2). Isokinetic concentric knee extension and flexion PT was significantly correlated with CMJ performance. However, higher correlation coefficients were obtained at the non-dominant leg. No significant differences were found but mere trend favoring non-dominant leg muscles in the weaker group. Strong positive correlation exists between isokinetic knee PT and CMJ height in professional female volleyball players. When divided and compared to WG and SG the results indicate weaker players tend to modify their technique individually and towards unilaterality as so they could maximize their performance.

Leptin is a hormone secreted from adipose tissue (AT) that plays important role in metabolism of carbohydrate, proteins, and lipids. Also, leptin and its receptors are key regulators of body weight and energy metabolism. Previous studies, demonstrated that plasma leptin improved glucose and lipid metabolisms independently of the food intake reduction by decreasing in blood glucose and insulin levels as well as triacylglycerol stores in the body. Objective of this study was to evaluate the relationship between plasma leptin concentration and lipid profile in healthy and diabetic individuals. Twenty-six participants were recruited in the study, 13 newly diagnosed and non-treated Type 2 diabetes (T2D) patients and 13 healthy controls. Metabolic variables including glucose, glycated hemoglobin, lipids: total cholesterol, triacylglycerol, high density lipoprotein, low density lipoprotein and very low-density lipoprotein, and hormone concentrations leptin and insulin were measured. Plasma leptin concentration was an increased significantly (p<0.001) in diabetic patients compared to controls. Values of other biochemical characteristics were significant different between cases and controls (p<0.001). A significant association was demonstrated between leptin with BMI levels in participants (p<0.05) but not between leptin and lipid levels (p>0.05). Also, strong negative associations were observed between leptin and glucose levels among controls (p<0.009) as well a positive association leptin with HOMA-IS in diabetics (p<0.05). These results suggest that plasma leptin concentrations were affected by the increased levels of glucose, insulin and lipid profile in Bosnian study population. Therefore, leptin can be used as a biomarker of glucose and lipid control in newly diagnosed diabetic patients.

This work sets out the methodology and presents the calculation results of fuel consumption of the BelAz dump trucks at the Open Pit "Turija" of the Brown Coal Mine Banovići itd. based on monitoring data. Properly determined fuel consumption allows the preventive measures and selection of strategy to reduce it. Data collection took six months, the data were analyzed, and thus the results by month of all dump trucks were presented.

This paper sets out the methodology and presents the results of calculation the efficiency of transport system in separation of the OP "Dimnjače", based on the data of monitoring the operating time and downtime/failure. Properly determined state of operation of the transport system, allows preventive measures and selection of maintenance strategy. Data collection lasted a year, and the data were analyzed, and thus the results are given by month for the transport system as a whole.

– Homeschooling is a term typically used to describe the form of education where parents educate their own children at home with little to no contact with public school education. The purpose of this study is to gather information on the public opinion of homeschooling in Sarajevo Canton, Bosnia and Herzegovina, as well as to see how the COVID-19 pandemics affected this opinion. For this purpose, a survey was conducted and, as a result, information on the topic is gathered. The general opinion of the public leaned more towards the negative end when all the results were summarized. Homeschooling, in general, is not a term that people are familiar with and accepting of in t h e region of Sarajevo Canton, Bosnia and Herzegovina. Additionally, the COVID-19 pandemic has not had a positive influence on the opinion of the homeschooling.