Retention is a phase of orthodontic treatment devised to keep the teeth in a correct position once the orthodontic treatment has been completed. There are three main characteristics that each ideal retainer is required to have: to keep the teeth in the correct position after orthodontic therapy, to be long lasting and resistant to mechanical damage, and to have no adverse long-term effects on periodontal tissue. Through a computer-based browsing through a number of databases (such as, e.g. PubMed and Google Scholar) we have found and analysed various articles used in this research. The inclusion criteria to be met were: an overall availability of a research paper, the requirement that these research papers are published in English, that these research papers were published in the period 2007-2019, the requirement that the research papers should involve clinically randomized studies and that their titles contain one of the predefined keywords. The database browsing that is based on the said keywords and carried out within the above time frame has resulted in finding 165 relevant articles. A complete set of the inclusion criteria were met by 8 published research papers, but 7 articles were analysed in the end. The selected articles have compared different types of fixed and mobile retainers, different times of wearing the retainers, the impact that the retainers had on the periodontium, and the acceptability of different retention protocols for patients. The conclusion of this research paper is that bonded retainers prove to be most effective in stabilising the position of the incisors, particularly the lower ones, but that their disadvantages include the reopening of the extraction space and the retention of plaque due to difficulties in maintaining oral hygiene. Vacuum-formed retainers appear to be more effective than Hawley retainers in retaining the position of the incisors, and patients have indicated that they are more acceptable to wear. Hawley retainers prove to be most effective in preserving a closed extraction space, but they do now show solid results with regard to other segments. Changes in the overbite, overjet, arch length, and anterior and posterior widths did not show any significant statistical differences in the different types of retainers.   Keywords: orthodontics, retention, stability, impact

The world agriculture uses about 70% of the world water resources in irrigation. The concern over the sustainability of water use as demand for agricultural, industrial, and domestic uses continues to increase. Conflicts between particular sectors result in tensions, which sometimes lead to “water wars” in different parts of the world. It is the reason why many national and international organizations are putting the water quantity and quality questions on the top of the world’s open questions/problems. The main aim of this paper is to present soil water balance of the Mediterranean region of Bosnia and Herzegovina, prepared for a long-term time series for two locations (Trebinje and Mostar) annually and during the vegetation period. The mean long-term data has been used as a base for future predicted calculation. The predicted PET was based on an increase in air temperature by 2°C and predicted decrease in precipitation by 25%. With so predicted calculated data of monthly PET and monthly precipitation the predicted soil water balance was done.

The optimal capital structure differs between companies and depends on the nature of the business, the characteristics of the business, etc. Usually when business income is higher, there is a reduction in business risk, while, on the other hand, higher profits and accumulated profits lead to an increase in investments and debt. In the research 10 companies of the power sector, representing the stock exchange index ERS 10 were examined. The following dependent variable was used: short term debt to total liabilities (STDTL). The following independent variables were used: current ratio (CR), return on capital employed (ROCE), earning before interest taxes depreciation (EBITDA), return on assets (ROA), return on equity (ROE),  the tangibility of assets (TOA), firm size (FS) and gross domestic product growth (GDP growth). The research period covered the years from 2008-2018 on a semi-annual basis. The total number of observations was 220. The main objective of the paper is to determine explanatory factors that influence the changes in short-term indebtedness and profitability of 10 companies within the power sector of Republika Srpska entity that constitute the stock exchange index ERS 10 in the period 2008-2018 on a semiannual basis (a total of 220 observations). The dependent variable is a short term debt to total liabilities (STDTL) while independent variables are as follows: current ratio (CR), return on capital employed (ROCE), earnings before interest, taxes and depreciation (EBITDA), return on assets (ROA), return on equity (ROE), the tangibility of assets (TOA), firm size (FS) and GDP growth. 

Tobacco consumption continues to be behavior engaged in by a large percentage of Bosnia & Herzegovina (BiH) citizens. According to the official statistics, nearly half of the state’s adults, that is about 1,200,600 people, consume tobacco products on a daily bases. The state excise policy is one of the main available tools for reducing smoking prevalence because cigarette prices are under the direct impact of this policy. The specific excise on cigarettes introduced in BiH in 2009 and has increased every year so it was the main driver of cigarette price growth. In order to provide research-based evidence for more effective tobacco taxation policies in BIH, in this paper we estimate the price elasticity of demand for cigarettes using the macro-level data for the period 2008 to 2017, on a semi-annual basis. The results have shown that the increase in prices of cigarettes has a statistically significant impact on cigarette consumption, at a significance level of 1%. The estimated price elasticity coefficient is in the range from -0.71 to -0.83, depends on the selected control variables used in the model. It means that the increase in real cigarette prices for 10% led to a decrease in cigarette consumption in the range from 7.1% to 8.3%.

Proper body posture should be at the very top, as this is the basic prerequisite of good health, normal growth, and development. The aim of this research was to determine significant differences between the initial and final measurements in the results of body deformities in students of classroom teaching. The study was conducted on a sample of 1105 students, aged 5 – 12 years. Diagnosis of body posture was performed according to Napoleon Wolanski's criteria. Measuring instruments/tests were used to measure the curvature of the spine, and the check of the structure of the feet was performed by the method of plantography. By analyzing the posture variables of individual body parts of the sample studied, using descriptive statistics, it was determined that there was a statistically significant representation of physical deformities, as well as statistically significant differences between the initial and final measurements in the results of physical deformities of class teaching students. The analysis of the obtained results provided data showing that in the initial measurement 231 students of class teaching have chest deformities, 792 students have spinal deformities, 267 students have leg deformities and 671 students have foot deformities. In the final measurement, 123 class teaching students have chest deformities, 488 students have spinal deformities, 133 students have leg deformities and 439 students have foot deformities. Based on the research it can be concluded that the frequency of physical deformities can be significantly reduced by planned and continuous corrective procedures, i.e. by applying appropriate content in physical and health education classes.

This paper aims to analyze the statistical parameters and to determine the differences between the water polo tournament in Sisak and the water polo tournament in Sarajevo. Situational efficiency utilizing certain variables shows us the most important parts of the game during a water polo match. Statistics is a scientific discipline that studies the methods of collecting, collating, analyzing, and interpreting data. The sample consists of 336 water polo players, from six clubs of two age categories from the league of Canton Sarajevo and six clubs of two age categories from the Sisak International Tournament, in the "junior and cadet" categories for men born in 2003 and 2004, 2005. The sample of variables consists of 9 tests to assess situational efficiency in a water polo game that defines the main characteristics of a water polo match. The following will explain the observed variables: goals scored, attempt to score, goal from action, center to score, anchor to score, penalty, attempt from penalty defended by the goalkeeper or player missed, foul on the counter-attack, sprint - counter with a goal scored. The results of the H square test show that there are statistically significant differences (p .000) in the analyzed segments of the water polo match. It can be concluded that the teams in the tournament in Sisak are better organized because in every aspect they have achieved better results in comparison to the Sarajevo tournament. The teams from Sisak were better and faster swimming because a lot of goals were scored by counter-attack, more attempts to shoot at goal (Sisak), fewer penalties, which means that in Sarajevo is rough play and greater success of winning teams in penalties.

Purpose of the study: The purpose of this paper is to analyze the potential causal link between innovation, entrepreneurship activity, and economic growth in the case of nine developed countries over the time-span ranging between 2001 and 2014. The research goal is to examine if the findings of this paper support the endogenous growth theory. Methodology: This paper has initially explored the stationary properties of the variables. Moreover, the causal links between the variables of interest have been investigated by estimating the panel VAR model (trivariate) employing the GMM framework. This paper also examines the potential causal linkage amid the variables of interest by employing the Granger causality test. Main Findings: Empirical results suggest that economic growth is found to Granger cause innovation and entrepreneurship activity. These findings emphasize the necessity to take both innovation and entrepreneurship while analyzing the determinants of economic growth since these are found to be interconnected and may play a critical role in the growth of the economy. These findings also support the endogenous growth. Applications of this study: Outcome of this paper is expected to provide significant insights for decision-makers to make a necessary effort not only to increase the start-up rates in developed countries but also to reduce the informal sector that is likely to occur as a result of start-ups in developing countries jeopardizing developed countries’ competitiveness. Novelty/Originality of this study: The first contribution of this study to the literature is the examination of cross-sectional dynamics of developed countries’ innovation, entrepreneurship, and economic growth. Secondly, these results indicate that entrepreneurial activity is a proximate cause and should be modelled as the channel through which innovation contributes to economic growth. Thirdly, the data used in this study are more comprehensive.

Deliberate unaccountability (insanity) is an institute known in legal theory as Actiones liberae in causa. Its significance lies it is an exception to the general rules for determining accountability and guilt. The exception is to regulate the guilt of persons who arbitrarily bring themselves into a state of temporary mental disorder and commit a crime in such a state. The central theme of the paper is the definition and legal regulation of actiones liberae in causa in Serbian criminal law, its demarcation from non-accounting and substantially reduced accounting as well as its application in practice.

Anterior cervical discectomy and fusion (ACDF) is one of the most common spinal procedures, frequently used for the treatment of cervical spine degenerative diseases. It was first described in 1958. Interestingly, to our knowledge, 3-level ACDF has not been previously published as a peer-reviewed video case with a detailed description of intraoperative microsurgical anatomy. In this video, we present the case of a 33-year-old male who presented with a combination of myelopathy (hyperreflexia and long tract signs in the upper and lower extremities) and bilateral radiculopathy of the upper extremities. He had been previously treated conservatively with physical therapy and pain management for 6 months without success. We performed 3-level microsurgical ACDF from C4 to C7. All 3 levels were decompressed, and bone allografts were placed to achieve intervertebral body fusion. A titanium plate was utilized from C4 to C7 for internal fixation. The patient was discharged home on the first postoperative day. His pain, numbness and tingling resolved, as well as his myelopathy. No perioperative complications were encountered. Herein we present the surgical anatomy of our operative technique including certain technical tips. Written consent was obtained directly from the patient.

Austempered ductile iron (ADI) belongs to the heat-treated class of ductile iron. The heat treatment consists of austenitization and the tempering process. The microstructure of an ADI sample is ausferrite consisting of acicular ferrite, carbon-saturated austenite and a graphite phase in the shape of nodules. The corrosion properties of ADI samples depend on the microstructure constituents and stability of the microstructure. In this paper, the influence of ausferrite microstructure decomposition on the corrosion properties of the ADI samples are presented. During the research, Tafel curve extrapolation and potentiodynamic polarization were used. It was found that the ausferrite microstructure decomposition very strongly affected the general corrosion behavior of the ADI samples.

Regardless of the context to which it is applied, sharing resources is well-recognized for its considerable benefits. Since 5G networks will be service-oriented, on-demand, and highly heterogeneous, it is utmost important to approach the design and optimization of the network from an end-to-end perspective. In addition, in order to ensure end-to-end performance, this approach has to entail both wireless and optical domains, altogether with the IoT, edge, and cloud paradigms which are an indispensable part of the 5G network architecture. Shifting from the exclusive ownership of network resources toward sharing enables all participants to cope with stringent service requirements in 5G networks, gaining significant performance improvements and cost savings at the same time. The main objective of this paper is to survey the literature on resource sharing, providing an in-depth and comprehensive perspective of sharing by recognizing the main trends, the techniques which enable sharing, and the challenges that need to be addressed. By providing a taxonomy which brings the relevant features of a comprehensive sharing model into focus, we aim to enable the creation of sharing models for more efficient future communication networks. We also summarize and discuss the relevant issues arising from network sharing, that should be properly tackled in the future.

Background: To investigate the total survival of low birth weight infants (LBWIs) in the Federation of Bosnia and Herzegovina (FB and H) and selected by subgroups of birth weight (BW) and gestational age (GA). Methods: This cross-sectional study included newborns of both genders, GA of 22–42 weeks and BW of less than 2500 g of 10 cantons territory of the FB and H. In the examined period, 22,897 children were born in the FB and H, of which 669 (2.9%) had BW less than 2500 g. Results: Surviving of LBWIs in the FB and H out of the 669 LBWIs in the first level perinatal healthcare institutions (PHI) was 29 (4.3%), the second level was 286 (42.8%), and the third level was 354 (52.9%). The total stillborn rate was 3.9%. The overall perinatal mortality rate for all levels of PHI was 8.6%. The overall rate of early neonatal mortality of LBWIs in all three levels of PHI in the FB and H was 12.7%. By the end of the first month of life (up to 28 days) and to the end of the neonatal period, 385 (57.5%) of LBWIs survived, and 284 (42.4%) died. The LBWIs by subgroups of BW up to 28 days had lower survival rates in second-level PHI than infants of the same BW subgroups (500–999 and 1000–1499) treated in third-level PHI (P = 0.0089 and P = 0.004). Conclusions: Our results show that B and H belongs to developing countries according to perinatal mortality. A unique database system is necessary to follow progress and trends.

Whole Genome Sequence of four samples from COVID-19 outbreaks was done in two laboratories in Bosnia and Herzegovina (Veterinary Faculty Sarajevo and Alea Genetic Center). All four BiH sequences cluster mainly with European ones (Italy, Austria, France, Sweden, Cyprus, England). The constructed phylogenetic tree indicates probable multiple independent introduction events. The success of future containment measures concernig new introductions will be highly challenging for country due to the significant proportion of BH population living abroad.