Software-intensive systems in the automotive domain are often built in different variants, notably in order to support different market segments and legislation regions. Model-based concepts are frequently applied to manage complexity in such variable systems. However, the considered approaches are often focused on single-product development. In order to support variable products in a model-based systems engineering environment, we describe a tool-supported approach that allows us to annotate SysML models with variability data. Such variability information is exchanged between the system modeling tool and variability management tools through the Variability Exchange Language. The contribution of the paper includes the introduction of the model-based product line engineering tool chain and its application on a practical case study at Volvo Construction Equipment. Initial results suggest an improved efficiency in developing such a variable system.

Ear training is a vital element in music education, analogous to taking dictation in written language. It provides musicians with a crucial skill used to identify pitches, melodies, chords and rhythms. Traditionally, the training is conducted by a tutor using a musical instrument, typically a piano. However, with new technologies emerging, several computer applications to facilitate this aspect of music education have been developed. Nevertheless, none of them utilised the VR technology, that proved to be successful in various scenarios, including educational systems, simulations, etc. In this work, we designed and developed a virtual reality ear training system for interval recognition and investigated its usability and user experience and the effect of spatialised audio in a 3D virtual environment on user performance. The results showed that the system has been successfully designed and provides users with a great experience when using it.

Reduced physical activity and an increase in sedentary habits, as one of the factors in the development of cardiovascular diseases, hypertension, type 2 diabetes mellitus and other diseases, are also present in the youth population. The increasing of sedentary lifestyle and the reducing of physical activity can have negative consequences for the health of both genders, including increasing the risk of cardiovascular diseases (CVD). It is believed that almost 50% of young people do not practice regular physical activity. Regular physical activity reduces the risk in adults of early death caused by coronary heart disease, high blood pressure, type 2 diabetes mellitus, colon and breast cancer and depression. Studies investigating the sedentary lifestyle of young people in the United States show that the length of watching TV is directly proportional to the frequency of obesity. Daily moderate (medium-intensity) physical activity is beneficial for all people, regardless of age. The World Health Organization, within its "Health for All" strategy for the region of Europe, has set the goal for young people to be healthier and more capable to fulfill their roles in society in the year 2020 and that the psycho-social condition of people needs to be improved and help and service should be available to them, which will be better able to include and be more accessible to people with a mental health problem.

The school is an institution that represents an important link in the social care chain for children and young people, which also involves taking various measures to prevent the occurrence of undesirable behaviors. The aim of the study is to determine the prevalence of risk factors between adolescents with externalized and internalized problems and typically developing adolescents, and to determine in which segment, in the opinion of teachers, early social-pedagogical intervention is most needed. The research sample is made up of 450 students (233 male and 217 female) of the seventh and eighth grades of primary school. The results show that the highest risk factors are present in the group of students with externalized behavioral problems, slightly less in the group with internalized problems, and the least in students without behavioral and emotional problems. When it comes to early social-pedagogical interventions, in the opinion of teachers, they should be comprehensive and implemented by a competent expert.

Objectives According to the World Cancer Research Fund, over 380,000 new cases of endometrial cancer have been reported in 2018. After the identification of disease, histologic diagnosis is the main standard for managing further treatment approaches. The following analysis is aimed to examine cost-effectiveness of two preoperative endometrial sampling methods - hysteroscopy and curettage; comparing tumor localization, grading and staging in patients with endometrial cancer. Methods The differences in the specifications of 64 patients that underwent hysteroscopy or curettage in tertiary care center in Croatia were tested. According to five different guidelines, all cases of endometrial cancer were classified into groups of low risk, intermediate, high-intermediate or high risk. Statistical test used for analysis were Kolmogorov-Smirnov test, T-test ant the Z-test. Given data of 36 women who underwent hysteroscopy and 28 women who underwent curettage were analysed. Results Occurrence rates of Grade 1 and Grade 2 of endometrial cancer were higher in patients who underwent hysteroscopy (p=0.03572, p=0.03846) (picture 1). According to the classification of risk factors, no differences in incidence were found between two groups (picture 2). Conclusions In Croatia, the cervical dilation and curettage is a less-frequently used method despite being 62% more affordable than the hysteroscopy, while on the other hand, there is statistically significant difference in preferred choice of the two methods given the histologic grade of cancer and age at the time of diagnosis.

Objectives The aim of this paper is to present a case of an IVF pregnancy of a 43-year old women being treated for recurrent endometrial cancer stage IA, grade I. Methods Our patient was initially treated five years ago when hysteroscopic ablation of endometrial polyp was performed. Pathologic examination of biopsy specimen reported a diagnosis of atypical polypoid adenomyoma. Two years later, patient was evaluated for recurrent local disease. At that time, pathologic examination revealed typical polypoid adenomyoma with presence of few glands with characteristics of well differentiated endometrioid adenocarcinoma stage IA, grade I. Results After a complete evaluation of cancer staging and a detailed explanation, patient rejected conventional surgical treatment and fertility preserving treatment was started. Progestin therapy via an intrauterine device (IUD) was administered. One year later, IUD was removed and patient underwent IVF cycle with a transfer of 3 embryos without success. At the age of 43, pregnancy was achieved in IVF cycle with administration of hCG. Conclusions Although there are existing evidence of effectiveness for using IUD progestin therapy in endometrial hyperplasia, studies for its use in treatment of endometrial cancer are lacking. We report a case of successful use of leveonorgestrel - IUD alone in fertility preserving treatment followed by achieved pregnancy.

This research examines different hypotheses that explain generic profitability within the framework of the hypothesis of efficiency, representing its main contribution to the use of direct measurement of efficiency through profitability and market competition. This measurement is achieved using pioneering techniques using a model in the scientific work Profitability, market structure and efficiency by M. Gumbau and J. Maudos (2000). Evidence obtained enables us not to reject the hypothesis about the profitability of oil producers in B&H, to determine whether the concentration positively affects profitability, and further, the results in most cases, enabled us to reject a clean hypothesis of efficiency since, although efficiency contributes positively to explaining the differences in profitability, the market share, which encompasses the effect of market power, also has a positive impact on it. So, from results obtained we do not reject the hypothesis of profitability so that we find positive relationship between profitability and the market share of Oil industry in Federation of Bosnia and Herzegovina.

Introduction: Occupational stress is inevitable, but prolonged and intense can lead to serious health problems. Neglecting this significant aspect of work and inadequate treatment of the first indicators results in the reduced working capacity of healthcare professionals. Material and methods: Assessing working conditions of 100 healthcare professionals regarding stress impact on empathy and workability was the primary goal of this study. A survey was conducted to identify differences between work in intensive care units and other clinical departments all related to empathy, workability, and stress perceiving to determine what is a better predictor of workability. Results: In the research group “intensive care units”, significantly lower empathy quotients, poorer workability, and different stressors were registered compared to research groups named “other departments”. Conclusion: The main conclusion of the study states different dynamics in the working environment of intensive care units compared to other departments that could potentially harm the personal capacity of healthcare professionals. 

This study introduces Uncertainty Balance Principle (UBP) as a new concept/method for incorporating additional soft data into probabilistic credit risk assessment models. It shows that soft banking data, used for credit risk assessment, can be expressed and decomposed using UBP and thus enabling more uncertainty to be handled with a precise mathematical methodology. The results show that this approach has relevance to credit risk assessment models in the sense that it proved its usefulness for the purpose of soft-hard data fusion, it modified Probability of Default with soft data modeled using possibilistic (fuzzy) distributions and fused with hard probabilistic data via UBP and it obtained better classification prediction results on the overall sample. This was demonstrated on a simple example of one soft variable, two experts and a small sample and thus this is an approach/method that requires further research, enhancements and rigorous statistical testing for the application to a complete scoring and/or rating system

Zadnjih desetljeća, primjena politike zaštite prirode, zasnovane na principima javnog sudjelovanja, postala je jedna od glavnih izazova za znanstvenike i donositelje odluka. Primjena politike očuvanja prirode slijedi dva osnovna pristupa: izdvajanje na osnovi prostorne podjele zaštićenih područja od proizvodnih, i pristup integracije, na temelju kojega se uključuju proizvodne i zaštitne namjene prostora. U mnogo slučajeva primjena politike očuvanja prirode uzrokovala je porast sukoba radi različitih i kompetitivnih principa korištenja zemlje, različitih interesa i pogleda. Cilj istraživanja je analizirati mišljenja stručnjaka o mogućim sukobima, prilikama i teškoćama za ljudske aktivnosti, ograničenjima u gospodarenju šumom vezano na uspostavu novih zaštićenih područja. Istraživanje je strukturirano u tri osnovna koraka: analiza stručnjaka, anketiranje i statistička obrada prikupljenih podataka. Polu-strukturirani upitnik putem emaila poslan je stručnjacima prema planiranom uzorku u svaku zemlju koja je uključena u COST CAPABAL projekt (COST Targeted Network TN1401 “CAPABAL” (41 sudionik u 10 zemalja). Podaci su statistički obrađeni, kako bi se naglasile razlike između EU28 zemalja članica i nečlanica i među institucijama (javna administracija, stručnjaci iz šumarstva i drvne industrije, fakulteta i istraživačkih institucija i okolišnih nevladinih organizacija). Na kraju prikupljanja podataka, sakupljn je 41 upitnik, koji su ispunili stručnjaci podijeljeni na zemlje članice EU (22 upitnika sa udjelom 54% u uzorku), i 19 stručnjaka iz zemalja izvan EU (46%). Promatrajući distribuciju uzorka prema zainteresiranim grupama, 41,5% ispitanika predstavlja javnu administraciju, 29,3% sveučilišta i istraživačke institute, 22% sudjeluje u lancu šuma-drvo, 7,3% su članovi nevladinih okolišnih udruga. Rezultati pokazuju da su najčešće vrste sukoba one koje su vezane za procedure uspostave novih zaštićenih zona, s posebnim naglaskom na ograničenja prava vlasništva i dodatno administriranje. Sudionici iz zemalja koje nisu EU28 članice, više su naglasile važnost ograničenja lovnih aktivnosti kao potencijalni sukob u usporedbi za sudionicima iz EU28 zemalja članica. Vezano na mogućnosti i ograničenja ljudskih aktivnosti u zaštićenim područjima, rezultati su pokazali da je razvoj ekoturizma jedna on najznačajnijih prilika za razvoj ruralnih marginalnih područja. Najveća zapreka je otežano gospodarenja šumom (pridobivanje drva) vezano za zahtjeve očuvanja prirode. Konačno, rezultati pokazuju da na ispitivanom uzorku najveća zabrinutost u gospodarenju šumom su dodatno vrijeme i novac potreban za nadzor i primjenu aktivnosti očuvanja prirode u zaštićenim područjima. Za ispitanike iz EU28 zemalja članica najveća zabrinutost vezano na aktivnosti gospodarenja šumom je primjena aktivnosti očuvanja prirode u zaštićenim područjima, dok su ispitanici izvan EU28 zemalja istaknuli primjenu pesticida kao najvažniju promjenu u gospodarenju šumom. Stavovi stručnjaka su temeljna početna pozicija koju treba uzeti u obzir kako bi se umanjili sukobi između očuvanja prirode i ljudskih aktivnosti te povećala socijalna uključenost u politiku očuvanja prirode.

Neonikotinoid grubu pestisitler, nikotine benzeyen davranislariyla sinirdokularini etkileyen insektisitlerdir. Bu insektisit grubunun ozellikle balarisi kolonileri uzerindeki olumcul etkileri bilinmektedir. Bunun yanindaki diger olumsuz ekolojik etkileri nedeniyle bazi turlerinin kullanimi cesitli ulkelerde yasaklanmistir. Neonikotinoid grubundan bir insektisit turu olan Clothianidin, su ve toprak gibi cevresel ortamlarda bulunabilen yasaklanmis insektisit turlerinden biridir. Clothianidin kalici ve yuksek hareketlilige sahip, hidrolize direncli, yeraltisuyuna ve yuzeysel sulara sizma potansiyeline sahip bir neonikotinoid grubu pestisit turu olarak bilinmektedir. Clothianidinin gorunur isik karsisindaki fotodegradasyon davranisini belirlemek ve aritma formulasyonlari gelistirmek bu kirleticilerle kirlenmis atiksularin yonetiminde onemlidir. Bu calismanin amaci, Clothinanidin’in ileri oksidasyon yontemleriyle giderim etkinligini arastirmaktir. Calisma kapsaminda Clothianidin’in UV-A, UV-C isinlari karsisindaki kararliliginin yaninda TiO 2 ve oksijen destegi ile su icerisindeki fotokatalitik bozunmasi da arastirilmistir. Clothianidinin sulu cozeltisi 0-120 dakika arasinda degisen sureler boyunca UV-A, UV-A+TiO 2 , UV-A+TiO 2 +O 2 ve UV-C uygulamalarina tabi tutulmus, surec esnasinda degisen Clothianidin konsantrasyonu HPLC analizleriyle izlenmistir. UV-A uygulamasina tabi tutulan cozeltideki Clothianidin duzeyinin sabit kaldigi, kirleticinin herhangi bir bozunmaya ugramadigi gozlenmistir. Ancak TiO 2 varliginda yapilan UV-A uygulamasi, herhangi bir giderim etkisi gostermeyen UV-A uygulamasina gore uygulama suresiyle artan bir Clothianidin giderim egilimiyle sonuclanmistir.  UV-A+TiO 2 uygulamasinin %42 oraninda bir giderimle sonuclandigi gorulmustur. UV-A+TiO 2 surecine oksijen ilave edilerek yapilan uygulamada ise oksijenin Clothianidin’in bozunmasina olumlu bir etkisinin oldugu, giderim veriminin artarak %42’den %69 duzeyine ulastigi gorulmustur. UV-C uygulamasi ile 5 dakika gibi kisa bir surede %99’a varan bir giderim verimi elde edilmistir. TiO 2 ve oksijen varliginda gerceklestirilen fotokatalik yontemin ve ozellikle UV-C uygulamasinin diger yontemlerden cok daha etkili oldugu ve aritma cozumlerinde tercih edilebilecegi sonucuna varilmistir.

Chainsaw is the main tool for work in a phase of wood felling and processing of forest harvesting in BiH. The aim of the research was to determine fuel and lubricant consumption of the chainsaws Husqvarna 365 and Dolmar PS – 7310 in the phase of felling and processing of wood assortments at the area of P.J. Forest Office „Zavidovići“, forest compartment 203. The volumetric method was applied for the measurement of fuel and lubricants consumption, with precise determination of fuel and lubricant quantity in chainsaw tanks. In total 140 trees of the sessile oak were felled (70 trees with chainsaw Husqvarna 365 and 70 trees with chainsaw Dolmar PS – 7310) during the research. The diameter at the breast height of felled trees ranged from 15 to 84 cm, while tree height ranged from 10,3 to 37,2 m. The total volume of processed assortments was 180,11 m3. The average fuel consumption per m3 processed assortments was 0,306 L/m3 for trees felled by chainsaw Husqvarna 365 which is for 0,042 L/m3 larger in comparison to chainsaw Dolmar PS – 7310 with average fuel consumption of 0,264 L/m3. The average lubricant consumption per m3 processed assortments was 0,102 L/m3 for trees felled by chainsaw Husqvarna 365 which is for 0,012 L/m3 larger in comparison to chainsaw Dolmar PS – 7310 with average lubricant consumption of 0,09 L/m3. Considering conducted research it can be assumed that there are differences in fuel and lubricant consumption between this two type of chainsaws for considered working conditions, but differences are not statistically significant.

We investigate the formation of resonances in the P33 partial wave with the emphasis on possible emergence of dynamically generated quasi-bound states as a consequence of a strong $p$-wave pion attractive interaction in this partial wave, as well as their possible interaction with the genuine quark excited states. By using the Laurent-Pietarinen expansion we follow the evolution of the $S$-matrix poles in the complex energy plane as a function of the interaction strength. Already without introducing a genuine quark resonant state, two physically interesting resonances emerge with pole masses around 1200 MeV and 1400 MeV, with the dominant $\pi N$ and $\pi\Delta$ component, respectively. The added genuine resonant state in the $(1s)^3$ quark configuration mixes with the lower dynamically generated resonance forming the physical $\Delta(1232)$ resonance, and pushes the second dynamical resonance to around 1500 MeV, which allows it to be identified with the $\Delta(1600)$ resonance. Adding a second resonant state with one quark promoted to the $2s$ orbit generates another pole whose evolution remains well separated from the lower two poles. We calculate the helicity amplitudes at the pole and suggest that their $Q^2$ dependence could be a decisive test to discriminate between different models of the $\Delta(1600)$ resonance.

By using the Kolmogorov-Arnold-Moser (KAM) theory, we investigate the stability of two elliptic equilibrium points (zero equilibrium and negative equilibrium) of the difference equation t n + 1 = α t n + β t n 2 − t n − 1 , n = 0 , 1 , 2 , … , where are t − 1 , t 0 , α ∈ R , α ≠ 0 , β > 0 . By using the symmetries we find the periodic solutions with some periods. Finally, some numerical examples are given to verify our theoretical results.