Repository of Josip Juraj Strossmayer University of Osijek
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Structural behaviour of steel beam elements with web openings
No full textČelični gredni nosači sa otvorima u hrptu predstavljaju konstrukcijsko rješenje u situacijama kada se zbog niske visine međukatne konstrukcije provlačenje instalacija klimatizacije, ventilacije ili elektroinstalacija provodi kroz same nosive elemente, ako se
želi smanjiti masa nosivih elemenata ili zadovoljiti određene estetske i arhitektonske zahtjeve. Iz istih razloga nije rijetkost da se na postojećim, punim grednim nosačima naprave naknadni, neplanirani otvori. Umetanje otvora omogućava promjenu mehanizma
otkazivanja. Iz tog razloga u diplomskome radu istražen je utjecaj neplaniranih oslabljenja čeličnih nosača „I“ profila na njihovo ponašanje. Kao osnovni uzorak odabran je nosač punog presjeka (neoslabljeni) koji je uspoređen sa svim ostalim oslabljenim uzorcima. Istraživanje je usporedno provedeno analitički, eksperimentalno i numerički u programskom paketu Ansys, a rezultati su uspoređeni kroz odnos „sila-progib“ čime se analizirao utjecaj oslabljenja na ponašanje nosivih elemenataSteel beam elements with web openings represent a structural solution commonly used in situations where, due to limited floor-to-floor height, mechanical, ventilation, or electrical installations need to pass through the load-bearing members themselves. They are also utilized when there is a need to reduce the self-weight of structural elements or to meet specific architectural or aesthetic requirements. For the same reasons, it is not uncommon for unplanned weakenings to be subsequently opened into existing solid-web beams. Introduction of such openings can lead to alternative failure mechanisms
compared to beams with solid webs. Therefore, this thesis investigates the effect of unplanned weakening of steel “I” profile beams on their structural behavior. The base specimen selected was a solid (unweakened) beam, which was compared to all other weakened specimens. The study was conducted analytically, experimentally, and numerically using the ANSYS simulation software. The results were compared through the load-deflection diagrams in order to evaluate the impact of the openings on the overall behaviour of the structural elements
Racing against AI models in Unity
No full textKorištenje Unity programa za pravljenje igara za razne platforme, i korištenje MLagents
biblioteke koja omogućuje integraciju umjetne inteligencije i strojnog učenja u igre. Automobil
predstavlja agenta na kojemu se trenira model za utrkivanje na raznim stazama. Modeliranje više staza u
Blenderu, različitih kompleksnosti te uspoređivanje njihovih rezultata učenja.abstract: Using Unity, a game development platform for creating games on different platforms, along
with ML-agents, a package that allows the integration of Artificial intelligence and machine learning in
games. The car represents an agent on which a model is trained for racing on different tracks. Multiple
tracks with different complexities are modeled in Blender and the performance of the car agent is
analyzed and compared
Suppression of drug abuse through misdemeanor law
No full textZlouporaba droga predstavlja ozbiljan društveni problem s negativnim posljedicama za pojedince, zajednicu i pravni sustav. U borbi protiv ove pojave, prekršajno pravo Republike Hrvatske ima važnu ulogu u sankcioniranju i prevenciji prekršaja povezanih s drogama. Cilj rada je analizirati pravne okvire i mehanizme koji se koriste u suzbijanju zlouporabe droga kroz prekršajno pravo, uključujući Prekršajni zakon, Zakon o suzbijanju zlouporabe droga i druge relevantne propise.
Rad obuhvaća definiciju prekršaja, vrste prekršajnih sankcija te načela koja se primjenjuju pri njihovom izricanju. Također se analizira problematika ovisnosti i različite vrste droga, s naglaskom na posljedice njihove konzumacije. Poseban fokus stavljen je na postupanje policijskih službenika kod sumnje na prekršaj povezan s drogama te na pravne mehanizme koji se koriste u suzbijanju ovih prekršaja. Zaključak rada naglašava važnost integriranog pristupa koji uključuje pravne sankcije, preventivne mjere i programe resocijalizacije ovisnika. Prekršajno pravo, uz učinkovit pravni okvir i suradnju nadležnih institucija, može značajno doprinijeti smanjenju zlouporabe droga i zaštiti javnog reda i mira.Drug abuse represents a serious social problem with negative consequences for individuals, the community, and the legal system. In combating this phenomenon, the misdemeanor law of the Republic of Croatia plays a crucial role in sanctioning and preventing drug-related offenses. The aim of this paper is to analyze the legal frameworks and mechanisms used to combat drug abuse through misdemeanor law, including the Misdemeanor Act, the Act on the Suppression of Drug Abuse, and other relevant regulations.
The paper covers the definition of misdemeanors, types of misdemeanor sanctions, and the principles applied in their imposition. It also examines the issue of addiction and various types of drugs, with an emphasis on the consequences of their consumption. Special focus is placed on the actions of police officers in cases of suspected drug-related misdemeanors and the legal mechanisms used to combat these offenses.
The conclusion highlights the importance of an integrated approach that includes legal sanctions, preventive measures, and rehabilitation programs for addicts. Misdemeanor law, along with an effective legal framework and the cooperation of relevant institutions, can significantly contribute to reducing drug abuse and maintaining public order and safety
Correlation between body mass index and postoperative complications in patients after myocardial revascularization surgery
No full textCilj istraživanja:
Cilj ovog istraživanja bio je ispitati postoji li povezanost između ITM-a i pojavnosti poslijeoperacijskih komplikacija kod bolesnika podvrgnutih kirurškoj revaskularizaciji miokarda (CABG) u Kliničkom bolničkom centru Osijek tijekom 2024. godine. Posebni ciljevi uključivali su analizu pojavnosti komplikacija te njihovu povezanost s dobi, spolom, komorbiditetima i ovisnostima.
Nacrt studije:
Istraživanje je koncipirano kao retrospektivno kohortno istraživanje.
Materijal i metode:
U istraživanje su uključeni podaci 188 bolesnika podvrgnutih kirurškoj revaskularizaciji miokarda u KBC-u Osijek tijekom 2024. godine. Analizirani su demografski podaci, ITM, prisutnost komorbiditeta, ovisnosti i pojavnost općih i specifičnih komplikacija. Korištena je neparametrijska statistika: Mann-Whitney U test, hi-kvadrat test, Kruskal-Wallis H-test i Spearmanov koeficijent korelacije. Analiza je provedena u programu SPSS 30.0 uz razinu značajnosti α = 0,05.
Rezultati:
Opće komplikacije zabilježene su kod 28,2 % pacijenata, a specifične kod 27,8 %. Najčešće su bile fibrilacija atrija i krvarenje. Pokazala se statistički značajna povezanost ITM-a s nestabilnim sternumom i infekcijom liječenom VAC terapijom. Komorbiditeti su pokazali značajnu povezanost s pojavnosti pojedinih komplikacija, dok dob, spol i ovisnosti nisu pokazali statističku značajnost.
Zaključak:
ITM je pokazao povezanost s nekim poslijeoperacijskim komplikacijama, ali nije potvrđen kao sveobuhvatan prediktor rizičnih ishoda nakon CABG-a. Potrebna su dodatna istraživanja s većim uzorcima i širim pokazateljima za precizniju evaluaciju rizika.Objectives:
The aim of this study is to examine whether there is an association between Body Mass Index (BMI) and the incidence of postoperative complications in patients who underwent coronary artery bypass grafting (CABG) at the Clinical Hospital Centre Osijek during 2024. The specific objectives included analyzing the incidence of complications and their association with age, sex, comorbidities, and addictions.
Study Design:
Retrospective cohort study.
Material and Methods:
The study included data from 188 patients who underwent coronary artery bypass grafting at the Clinical Hospital Center Osijek during 2024. Demographic data, BMI, presence of comorbidities, addictions, and the incidence of general and specific complications were analyzed. Nonparametric statistics were used: the Chi-square test, Mann-Whitney U test, Kruskal-Wallis H test, and Spearman’s correlation coefficient. The analysis was conducted using SPSS version 30.0, with a significance level of α = 0.05.
Results:
General complications were recorded in 28.2% of patients, and specific complications in 27.8%. The most common were atrial fibrillation and bleeding. A statistically significant association was found between BMI and both sternal instability and infections treated with VAC therapy. Comorbidities showed a significant association with the occurrence of certain complications, while age, sex, and addictions did not show statistical significance.
Conclusion:
BMI was found to be associated with certain postoperative complications, but it was not confirmed as a comprehensive predictor of adverse outcomes following CABG. Further research with larger sample sizes and broader indicators is needed for a more precise risk assessment
Cooperative Games
No full textU ovom radu bavimo se kooperativnim igrama s prenosivom korisnošću. Na početku uvodimo osnovne pojmove poput raspodjele, imputacije, vrijednosti koalicije i karakteristične funkcije. Nakon toga definiramo pojam jezgre i navodimo uvjete pod kojima jezgra nije prazna, pri čemu dokazujemo Bondareva–Shapleyjev teorem. Zatim definiramo Shapleyjevu vrijednost i razmatramo njezinu vjerojatnosnu interpretaciju te metode aproksimacije putem Monte Carlo simulacija, kao i mogućnost korištenja Bayesovskog pristupa u tom kontekstu. Nadalje, fokusiramo se na nukleolus kao jednoznačno rješenje koje se temelji na leksikografskoj minimizaciji viškova koalicija. Prikazujemo postupak pronalaska nukleolusapomoćualgoritmakojikoristirješavanjelinearnihprograma. Nakraju primjenjujemo postupak na primjeru i analiziramo raspodjelu dobivenu algoritmomuodnosunauravnotežene skupove.This thesis focuses on cooperative games with transferable utility. We begin by introducing fundamental concepts such as allocation, imputations, coalition values, and the characteristic function. Next we define the concept of the core and establish the conditions under which the core is non-empty, proving the Bondareva–Shapleytheorem. WethendefinetheShapleyvalueandexamineitsprobabilistic interpretation, including methods of approximation via Monte Carlo simulations, as well as applying the Bayesian approach in that context. Furthermore, we shift ourfocustothenucleolusasauniquesolutionbasedonthelexicographicminimization of coalition excesses. We present the process of finding the nucleolus using an algorithm that relies on solving linear programming problems. Finally, we illustrate the procedure on an example and analyze the allocation produced by the algorithm in relation to the balanced set
Phosphate Removal from Wastewater by Adsorption
No full textFosfor je element prirodno prisutan u ekosustavu. No, u koliko se velike količine fosfora nagomilavaju u prirodnim recipijentima, dolazi do pojave eutrofikacije. Eutrofikacija ili cvjetanje vode je proces nagomilavanja organskih tvari u vodama, zbog čega dolazi do smanjenja količine kisika i odumiranja biljnih i životinjskih vrsta. Zagađenenje vodnih resursa može biti uzrokovano spojevima koje u njih dospijevaju putem otpadnih voda iz industrija ili domaćinstava, te ispiranjem poljorivrednih površina. Smanjenje pojave eutrofikacije vodenih tijela možemo postići primjenom bioloških, fizikalnih i kemijskih postupaka pročišćavanja otpadnih voda. Unaprjeđenjem postojećih tehnologija osiguravamo učinkovito uklanjanje fosfata iz otpadnih voda. Jedna od najuspješnijih metoda uklanjanja spojeva fosfora iz otpadnih voda je adsorpcija. U ovom radu ispitana je uspješnost adsorpcije fosfata uz pomoć prethodno modificiranih lignoceluloznih materijala. Korišteni materijali bili su otpadni materijali prehrambene industrije: ljuska suncokreta, kakaovca i bundeve. To su jeftini materijali koji su se, nakon odgovarajuće kemijske modifikacije, koristili kao kompleksni adsorbensi. Njihova učinkovitost adsorpcije fosfata iz modelnih otopina fosfata uspoređena je s učinkovitošću adsorpcije klasičnih komercijalnih adsorbenasa različite granulacije. Učinkovitost uklanjanja fosfata ispitana je u ovisnosti o pH vrijednosti otopine fosfata i početnoj koncentraciji otopine fosfata pri konstantnom vremenu, masi adsorbensa i temperaturi adsorpcije.Phosphorus is an element naturally present in the ecosystem. However, eutrophication occurs if large amounts of phosphorus accumulate in natural receptors. Eutrophication or water blooming is the accumulation of organic matter in the water, which leads to decrease in oxygen and death of plant and animal species. Pollution of water resources can be caused by compounds that get into them through wastewater from industries or households and leaching of agricultural areas. Reducing the occurrence of eutrophication of water bodies can be achieved by applying biological, physical, and chemical wastewater treatment procedures. By improving existing technologies, we ensure the efficient removal of phosphates from wastewater. One of the most successful methods of removing phosphorus compounds from wastewater is adsorption. This study examined the possibility of phosphate adsorption onto modified lignocellulosic materials. Used lignocellulosic materials were the food industry by-products: sunflower, cocoa and pumpkin husks which were chemically modified. Their phosphate adsorption efficiency from a phosphate model solution was compared with classical commercial adsorbents of different granulations. The phosphate removal efficiency was tested under various pH values of the phosphate solution and various the initial phosphate concentrations at constant time, adsorbent mass, and adsorption temperature
Web application for choosing a recipe
No full textWeb aplikacija za odabir recepta izrađena je pomoću tehnologija: HTML, CSS, PHP i
MySQL baze podataka, uz korištenje WordPress sustava. Aplikacija omogućuje korisnicima pregled,
pretraživanje, filtriranje i objavu recepata putem jednostavnog korisničkog sučelja. Ovisno o ulozi (gost,
registrirani korisnik, administrator), dostupne su različite funkcionalnosti poput unosa recepata,
pregleda osobnog profila, komentiranja i ocjenjivanja, kao i upravljanja sadržajem te analitike pregledaThe web application for choosing a recipe was created using technologies: HTML, CSS, PHP and
MySQL database, using the WordPress system. The application allows users to view, search, filter and
publish recipes through a simple user interface. Depending on the role (guest, registered user,
administrator), various functionalities are available such as entering recipes, viewing personal profile,
commenting and rating, as well as content management and review analytics
The opinion of the surgical patient about the role of the nurse technician in the operating room Dr. Josip Benčević Slavonski Brod
No full textCilj istraživanja: Ispitati mišljenje kirurških bolesnika o ulozi medicinske sestre/tehničara u
operacijskoj sali te ispitati razlike u mišljenju i zadovoljstvu ispitanika prema spolu, dobi,
obrazovanju, mjestu stanovanja i broju hospitalizacija.
Nacrt studije: Presječna studija.
Ispitanici i metode: U istraživanju je sudjelovalo 102 kirurških bolesnika koji su hospitalizirani
od veljače do svibnja 2025. godine na kirurškom odjelu Opće bolnice „Dr. Josip
Benčević“ Slavonski Brod. Korišten je strukturirani anketni upitnik s pitanjima o
sociodemografskim podacima i mišljenju o ulozi medicinske sestre/tehničara te zadovoljstvu
skrbi. Podaci su analizirani neparametrijskim statističkim metodama.
Rezultati: Ispitanici su visoko ocijenili odgovornost, savjesnost i profesionalnost medicinskih
sestara/tehničara. Žene su značajno više prepoznale komunikacijske vještine sestara/tehničara.
Stariji ispitanici više su cijenili tehničke aspekte uloge, dok su mlađi isticali opću odgovornost.
Zadovoljstvo pruženom skrbi bilo je iznimno visoko kod svih ispitanika, bez značajnih razlika
prema dobi, obrazovanju, mjestu stanovanja i broju hospitalizacija; jedina razlika zabilježena
je u većem zadovoljstvu muškaraca primljenim informacijama.
Zaključak: Kirurški bolesnici prepoznaju i cijene profesionalizam i odgovornost medicinskih
sestara/tehničara u operacijskoj sali. Zadovoljstvo skrbi izrazito je visoko, a percepcija uloge
medicinskih sestara/tehničara oblikovana je demografskim čimbenicima, što upućuje na
važnost individualiziranog pristupa i kontinuirane edukacije.Research objective:. To examine the opinions and knowledge of surgical patients regarding
the role of nurses/technicians in the operating room and to assess differences in opinions,
knowledge, and satisfaction according to gender, age, education, place of residence, and
number of hospitalizations.
Study design: A cross-sectional study.
Respondents and methods: The study included 102 surgical patients hospitalized from
February to May 2025 at the surgical department of the General Hospital "Dr. Josip Benčević"
Slavonski Brod. A structured questionnaire was used, covering sociodemographic data,
knowledge and opinions about the role of nurses/technicians, and satisfaction with care. Data
were analyzed using non-parametric statistical methods.
Results: Respondents rated the responsibility, conscientiousness, and professionalism of
nurses/technicians very highly. Women significantly more often recognized the communication
skills of nurses/technicians. Older respondents valued technical aspects of the role more, while
younger respondents emphasized general responsibility. Satisfaction with care was extremely
high among all respondents, with no significant differences by age, education, place of
residence, or number of hospitalizations; the only difference was greater satisfaction among
men with the information received.
Conclusion: Surgical patients recognize and appreciate the professionalism and responsibility
of nurses/technicians in the operating room. Satisfaction with care is extremely high, and the
perception of the nurses’/technicians’ role is shaped by demographic factors, highlighting the
importance of an individualized approach and continuous education
Situation and Perspectives of Employment of Persons with Disabilities in Croatian and Bosnia and Herzegovina Public Administration
No full textNezaposlenost među osobama s invaliditetom u radnoj dobi problem je u cijeloj Europi, pa tako i u Hrvatskoj, ali i Bosni i Hercegovini. U Hrvatskoj je udio nacionalne stope zaposlenosti osoba s invaliditetom 3,5% od sveukupnog broja zaposlenih osoba. Javni sektor glavno je radno mjesto za osobe sa invaliditetom. Zapošljavanje ove teško zapošljive skupine predstavlja ključno pitanje je li društvo postalo inkluzivno i omogućava li jednaka prava i mogućnosti svim svojim građanima. Ovaj rad analizirat će postojeće stanje i perspektive zapošljavanja osoba s invaliditetom u javnom sektoru Republike Hrvatske i Bosne i Hercegovine. Posebna pažnja posvećena je usporedbi zapošljavanja osoba s invaliditetom u Hrvatskoj, državi članici Europske unije, i Bosne i Hercegovine, koja je u procesu europske integracije. Analizirane su trenutne situacije u sektoru zapošljavanja, posebno u javnom sektoru, prikazani primjeri dobre prakse, kao i primjeri načina kako se nastoji uključiti osobe s invaliditetom u društvo.Unemployment among people with disabilities of working age is a problem throughout Europe, including Croatia, but also in Bosnia and Herzegovina. In Croatia, the share of the national employment rate of persons with disabilities is 3.5% of the total number of employed persons. The private sector is the main workplace for people with disabilities. The employment of this difficult-to-employ group is a key question as to whether society has become inclusive and provides equal rights and opportunities to all its citizens. This paper will analyze the current situation, challenges and perspectives of employment of people with disabilities in the public sector of Republic of Croatia and Bosnia and Herzegovina. Special attention is paid to comparing the employment of people with disabilities in Croatia, a member state of the European Union, and Bosnia and Herzegovina, which is in the process of european integration. The current situation in the employment sector, especially in the public sector, is analyzed, examples of good practice are presented, as well as examples of ways of trying to include people with disabilities in society
Training of Police Officers in the Republic of Croatia and the Republic of Slovenia
No full textObrazovanje policijskih službenika u Republici Hrvatskoj i Republici Sloveniji od iznimne je važnosti za osiguranje profesionalnog i odgovornog policijskog sustava. Obje zemlje razvile su obrazovne programe koji omogućuju usavršavanje policijskih službenika za suočavanje s različitim izazovima, kao što su borba protiv kriminala, terorizma i novim prijetnjama u društvu. U Hrvatskoj, obrazovni sustav temelji se na sveobuhvatnom pristupu koji uključuje teoretsko i praktično obrazovanje, s naglaskom na ljudska prava, etiku i upravljanje kriznim situacijama. Sličan obrazovni model prisutan je i u Sloveniji, koja se također fokusira na unaprjeđenje stručnih vještina, suradnju na europskoj razini i primjenu novih tehnologija. Obrazovanje policijskih službenika u obje zemlje odražava nacionalne specifičnosti, ali je i utemeljeno na zajedničkim europskim standardima, s ciljem osiguravanja profesionalnosti i osposobljenosti u radu policijskih službenika, te pripreme za kompleksne društvene izazove s kojima se suočavaju.The education of police officers in the Republic of Croatia and the Republic of Slovenia is of utmost importance for ensuring a professional and responsible policing system. Both countries have developed educational programs that enable police officers to face various challenges such as fighting crime, terrorism, and new societal threats. In Croatia, the educational system is based on a comprehensive approach that includes both theoretical and practical education, with a focus on human rights, ethics, and crisis management. A similar educational model is present in Slovenia, which also emphasizes the improvement of professional skills, cooperation at the European level, and the implementation of new technologies. Police officers' education in both countries reflects national specifics but is also based on common European standards, with the goal of ensuring professionalism and competence in the work of police officers, as well as preparing them for the complex societal challenges they face