Croatian Digital Thesis Repository
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Designing race car for hill climb competition
No full textU okviru ovog diplomskog rada prikazan je proces koncipiranja i konstruiranja šasije i ovjesa trkaćeg vozila koje se bazira na cestovnom vozilu u svrhu natjecanja na brdskim utrkama pod okriljem FIA-e u kategoriji II grupa E. U uvodnom dijelu rada napravljen je pregled postojećih kategorija te pravilnika koji obuhvaćaju navedeno natjecanje te prikaz koncepta samog trkaćeg vozila. U nastavku je prikazan proces konstruiranja šasije vozila te zaštitnog kaveza propisanog prema navedenim pravilnicima kao i kontrolni proračun navedenih dijelova za specifične slučajeve opterećenja. Na temelju konstrukcije šasije vozila određen je smještaj vozača te smještaj odabranih pogonskih i popratnih komponenata vozila. Finalno je prema prethodno opisanoj konstrukciji izrađen koncept ovjesa vozila te smještaj njegovih dijelova i načina prihvata za šasiju.In this master's thesis process of creating a concept and designing of chassis and suspension for racing vehicle based on road vehicle for competition in hillclimb racing under the auspices of the FIA in category II group E is presented. In the introductory part of the thesis, an overview of the existing categories and regulations covering the competition was made, as well as presentation of the vehicle concept. Next part of the thesis shows process of designing the vehicle chassis and safety cage according to the mentioned rules, as well as structural calculation of mentioned parts for specific load scenarios. Based on design of the vehicle chassis, location of the driver and selected drivetrain and supporting vehicle components were determined. Finally, according to the previously described construction, concept of the vehicle suspension and location of its components and fixtures to the chassis was designed
Determination of 3D printed conic blood vessel replica
No full text3D ispisom moguće je napraviti umjetnu repliku neopterećene arterije koja se u fiziološkom rasponu tlakova ponaša slično stvarnoj žili. Korišteni polimerni materijali opisani su Neo-Hooke materijalnim modelom. Cilj ovog rada je određivanje geometrije 3D ispisane konusne replike krvne žile te priprema modela aneurizme aorte za proizvodnju 3D ispisom. Modeli su dobiveni numeričkom metodom temeljenom na mehanici kontinuuma. Iz poznatih podataka dimenzija pravih ljudskih krvnih žila pri dijastoličkom i sistoličkom tlaku iterativnim postupkom izračunava se neopterećena geometrija replike krvne žile prigodna za 3D ispis. U radu je izveden numerički postupak, primijenjen je na konusnu žilu i aneurizmu te su modeli verificirani metodom konačnih elemenata.Artificial unloaded artery replicas, 3D-printed using Neo-Hookean material models, simulate the mechanical behavior of real vessels under physiological pressure ranges. This research focuses on defining the geometry of 3D-printed conic blood vessel replicas and preparing aortic aneurysm models for 3D manufacturing. Employing continuum mechanics, an iterative numerical approach determines the unloaded vessel geometry based on diastolic and systolic human vessel dimensions. Finite element analysis was employed to validate the resulting conic blood vessel and aneurysm models
Pedagogical Measusers in the System of Prevention of Student's Behaviour Problems
No full textCilj ovog diplomskog rada je analizirati načine na koje pedagoške mjere pridonose prevenciji problema u ponašanju učenika. Problemi u ponašanju obuhvaćaju široki spektar postupaka kojima pojedinac postupa neprihvatljivo čineći štetu sebi i drugima. Učinkovita prevencija problema u ponašanju ključna je strategija za sprječavanje njihovog razvoja. Ona se temelji na sustavu rizičnih i zaštitnih čimbenika koji uključuje suradnju različitih aktera. U ovome je radu fokus na selektivnoj prevenciji koja se može povezati sa sustavom pedagoških mjera, odnosno njihovim shvaćanjem kao sredstvom kažnjavanja učenika za određeno neprihvatljivo ponašanje. U radu je prikazano istraživanje provedeno s 12 studenata završne godine pedagogije kod kojih se ispitivalo mišljenje o potencijalima sustava pedagoških mjera. Podatci su prikupljeni putem Google obrasca, a odgovori su obrađeni kvalitativnom metodom analize sadržaja te su potkrijepljeni statističkim podatcima o pedagoškim mjerama sa Školskog e- Rudnika. Rezultati ukazuju na povećanu učestalost izricanja pedagoških mjera sa svrhom kažnjavanja te na nedovoljnu upoznatost studenata s tom problematikom. Također dokazano je kako studenti ne smatraju da pedagoške mjere mogu utjecati na promjenu ponašanja učenika te uviđaju potrebu za unaprjeđenjem sustava pedagoških mjera.The aim of this thesis is to analyze the ways in which pedagogical measures contribute to the prevention of problems in student behavior. Behavioral problems include a wide range of actions that an individual behaves in an unacceptable way, causing harm to himself and others. Effective prevention of behavioral problems is a key strategy to prevent their development. It is based on a system of risk and protective factors that includes the cooperation of various actors. In this paper, the focus is on selective prevention, which can be connected with the system of pedagogical measures, that is, understanding them as a means of punishing students for certain unacceptable behavior. The paper presents the research conducted with 12 students in their final year of pedagogy, whose opinions on the potential of the system of pedagogical measures were examined. The data was collected through a Google form, and the answers were processed using the qualitative method of content analysis and supported by statistical data on pedagogical measures from the School e-Miner. The results indicate an increased frequency of imposing pedagogic measures with the purpose of punishment and insufficient familiarity of students with this issue. It has also been proven that students do not think that pedagogical measures can influence the change of student behavior and they see the need to improve the system of pedagogical measures
INSURANCE COMPANY ASA CENTRAL D. D.
No full textU sadržaju ovog rada definira se pojam i značenje osiguranja kao poslovne djelatnosti kojom se bave osiguravajuća društva, ali također se pojašnjava osiguranje kao ljudska potreba bez koje suvremeni čovjek ne može osjećati sigurnost. Osiguranje kao ljudska potreba javlja se već u davnim vremenima kroz povijest tisućama godina unazad kada su prve civilizacije nastojale zaštititi svoju imovinu i posjede te se može reći da su se prvi oblici osiguranja pojavili u vremenu prije Krista u starim civilizacijama koje su počele razvijati svijest o rizicima gubitka ili uništenja imovine koju su posjedovali i njome raspolagali. Nadalje se nastoji objasniti i približiti definicija osiguranja, značenje, povijesni razvoj te njegove funkcije i podjela. Temeljne funkcije osiguranja, sudionici na tržištu, podjela istog i drogo, objašnjeni su u nastavku ovog rada. Također će se spomenuti i način funkcioniranja osiguranja u Republici Hrvatskoj s pripadajućim zakonskim okvirima, a budući „Osiguravajuće društvo ASA Central d.d.“, koje je tema ovog rada, posluje u Bosni i Hercegovini, isto tako će se pažnja usmjeriti i na funkcioniranje djelatnosti osiguranja i njegov zakonski okvir u toj zemlji. U fokusu ovog rada je pripajanje dvaju osiguravajućih društava koja su poslovala u potpunosti odvojeno kao pojedinci i ostvarivali solidne rezultate na tržištu osiguranja. Naposljetku je dogovoreno pripajanje tako što Central Osiguranje d.d. postaje dio ASA Grupacije tako što biva pripojeno ASA Osiguranju d.d. te osiguravajuće društvo počinje poslovati pod imenom ASA Central d.d. što u konačnici dovodi do toga da Društvo postaje lider među osiguravajućim društvima na tržištu osiguranja u Bosni i Hercegovini.In this paper's content it attempts to define the concept and meaning of insurance as a business activity carried out by insurance companies, but it also attempts to explain insurance as a human need without which modern man cannot feel secure. Insurance as a human need has been present since ancient times throughout history, thousands of years ago, when the first civilizations sought to protect their property and possessions, and it can be said that the first forms of insurance appeared in the time before Christ in ancient civilizations that began to develop awareness of the risks of loss or destruction of property they owned and had at their disposal. Furthermore, it attempts to explain and bring closer the definition of insurance, its meaning, historical development, and its functions and division. The basic functions of insurance, market participants, its division and sub-division, are explained in the rest of this paper. It will also mention the way insurance functions in the Republic of Croatia with the associated legal framework, and since the "Insurance Company ASA Central d.d.", which is the subject of this paper, operates in Bosnia and Herzegovina, attention will also be focused on the functioning of the insurance industry and its legal framework in that country. Regarding the topic of this paper, the highest attention is focused on the merger of two insurance companies that operated completely separately as individuals and achieved solid results on the insurance market. In the end, the merger was agreed upon by Central Insurance d.d. becomes part of the ASA Group by being merged with ASA Insurance d.d. and the insurance company starts operating under the name ASA Central d.d. which ultimately leads to the Company becoming a leader among insurance companies on the insurance market in Bosnia and Herzegovina
Bleeding from esophageal and stomach varices
No full textProbavni sustav se anatomski može podijeliti na gornji i donji dio, odvaja ih Treitzov ligament. Gornji dio probavnog sustava uključuje usnu šupljinu, ždrijelo, jednjak, želudac i duodenum. Najčešća su krvarenja iz gornjih dijelova probavnog sustava i to čak 80% u odnosu na donji dio probavnog sustava. Krvarenje iz varikoziteta jednjaka i želuca najčešće za uzrok ima portalnu hipertenziju. Portalna hipertenzija posljedica je povišenja tlaka u portalnom venskom sustavu. Pristup bolesnicima s krvarenjem iz varikoziteta jednjaka i želuca individualan je, razlikuje se ovisno o stanju bolesnika i kliničkoj slici. Za početak, najvažnije je osigurati hemodinamsku stabilnost bolesnika. Endoskopske metode kojima se pristupa prilikom zaustavljanja krvarenja su skleroterapija, podvezivanje varikoziteta, transjugularni intrahepatični portosistemski shunt te farmakološka terapije i kasnije sekundarna profilaksa. Sekundarna profilaksa se koristi s ciljem smanjenja recidiva krvarenja. Uloga medicinske sestre važna je u procesu zdravstvene njege bolesnika s krvarenjem iz varikoziteta jednjaka i želuca jer planiranim intervencijama i ciljevima pomaže oporavku i olakšanju pacijentu.The digestive system can be anatomically divided into an upper and a lower part, separated by the ligament of Treitz. The upper part of the digestive system includes the oral cavity, pharynx, esophagus, stomach and duodenum. Bleeding from the upper parts of the digestive system is the most common, as much as 80% compared to the lower part of the digestive system. Bleeding from esophageal and gastric varices is most often caused by portal hypertension. Portal hypertension is the result of increased pressure in the portal venous system. The approach to patients with bleeding from esophageal and gastric varices is individual, it differs depending on the patient's condition and clinical picture. In the beginning it is important to ensure the hemodynamic stability of the patient. Endoscopic methods used to stop bleeding are sclerotherapy, ligation of varices, transjugular intrahepatic portosystemic shunt, and pharmacological therapy and later secondary prophylaxis. Secondary prophylaxis is used with the aim to reduce the recurrence. The nurse plays an important role in the process of health care for patients with bleeding from esophageal and gastric varices, as their planned interventions and objectives contribute to the patient's recovery and relief
Laboratory for machine tools layout proposal
No full textU ovom završnom radu analiziran je razmještaj strojeva u Laboratoriju za alatne strojeve u sklopu projekta opremanja Centra za napredne proizvodne postupke. U uvodnom dijelu dan je pregled aktivnosti Katedre za alatne strojeve u sklopu koje djeluje Laboratorij za alatne strojeve te su prikazane različite metode obrade odvajanjem čestica. Analizirani su planirani kapaciteti Centra pri čemu su definirani funkcionalni zahtjevi, prednosti i nedostaci pojedinih strojeva te je provjerena dostupnost kapaciteta na tržištu. Nadalje, opisane su karakteristike prostora te su na temelju istih izrađene različite varijante rasporeda prema principima fleksibilnosti, toka materijala i grupiranja po tipu stroja. Naposljetku je provedena analiza metodom vrednovanja u ovisnosti o određenim kriterijima prema kojoj je odabrana najpovoljnija varijanta od predloženih.In this thesis, the machine tools layout of the Laboratory for Machine Tools was analyzed as part of the project for equipping the Center for Advanced Manufacturing Processes. The introduction provides an overview of the activities of the Chair of Machine tools, within which the Laboratory for Machine tools operates. The planned capacities of the Center were analyzed, with respect to functional requirements, advantages and disadvantages of individual machines, and the availability of capacities on the market. Furthermore, the layout characteristics were described, and based on these, different layout variants were suggested according to the principles of flexibility, material flow, and machine grouping by type. Finally, the proposed layouts were analyzed based on specific criteria, resulting in the selection of the most suitable option
Strength calculation of a vertical cement silo
No full textGlavni cilj ovoga rada je provesti numerički proračun vertikalnog silosa za cement koji je svojom konstrukcijom i dimenzijama praktički identičan realnom silosu.
U prvom poglavlju općenito se opisuju silosi i procesi koji se odvijaju u njima te se deklarira problem koji je potrebno riješiti. Prikazan je način na koji su se odredile dimenzije silosa s obzirom na način protoka materijala pri ispuštanju iz silosa.
Zatim se objašnjava primjena metode konačnih elemenata te se opisuju konkretni elementi koji su se koristili pri analizi.
Prikazani su verifikacijski primjeri koji su poslužili kao jednostavniji primjeri za rješavanje problematike silosa kako bi se utvrdila ispravnost elemenata potrebnih za analizu samoga silosa.
U četvrtom poglavlju proveden je analitički proračun pojednostavljenog silosa te su rezultati uspoređeni s rezultatima koji su se dobili numeričkim putem. Na kraju se provodi analiza silosa s konstrukcijom koja je bliska realnoj te se daju rezultati analize i uspoređuju s rezultatima koji su se dobili kod pojednostavljenog silosa.The main goal of this thesis is to carry out a numerical calculation of the vertical cement storage
silo, which is, by its dimensions and construction, practically identical to a real silo.
In the first chapter, silos and processes that take place in silos are explained as well as the
problem that needs to be solved. The method by which the silo dimensions were determined,
with respect to the manner of material flow during silo discharge, is shown.
In addition, the finite element method as well as the elements that were used in analysis of this
thesis are explained.
Verification examples that were used as simple examples for silo problematics solving are
shown in order to determine correctness of the elements required for silo analysis.
In the fourth chapter, an analytical calculation of the simplified silo was performed and the
results were compared with the results obtained by numerical method. Finally, an analysis of
the silo with construction similar to the real silo is performed and the results of the analysis, as
well as the results comparison with the simplified silo, are shown
e-Services of the Ministry of the Interior of the Republic of Croatia
No full textOvaj rad proučava e-usluge Ministarstva unutarnjih poslova Republike Hrvatske (MUP RH) koje su dostupne građanima i pravnim osobama za obavljanje raznih administrativnih postupaka putem interneta. E-usluge omogućuju korisnicima da brzo i jednostavno podnesu zahtjeve za osobne dokumente, prijave ili promijene prebivalište, provjere status dokumenata, te pristupe informacijama vezanim za osobnu sigurnost i upravne poslove. U radu se analizira uloga ovih usluga u poboljšanju dostupnosti i učinkovitosti javne uprave, s posebnim naglaskom na tehničke izazove, sigurnosne aspekte i pravnu regulativu. Naglašava se važnost digitalne transformacije javne uprave, koja ne samo da pojednostavljuje svakodnevne postupke, već doprinosi i smanjenju administrativnog opterećenja građana i poslovnih subjekata. Rad također istražuje utjecaj e-usluga na transparentnost i modernizaciju upravnih procesa u Hrvatskoj, kao i na prilagodbu MUP-a suvremenim potrebama građana.This paper examines the e-services provided by the Ministry of the Interior of the Republic of Croatia (MUP RH) that allow citizens and legal entities to complete various administrative processes online. E-services enable users to quickly and easily apply for personal documents, register or change their residence, check the status of their applications, and access information on personal security and administrative matters. The paper analyzes the role of these services in improving the accessibility and efficiency of public administration, with a special focus on technical challenges, security issues, and legal regulations. Emphasis is placed on the importance of digital transformation in public administration, which not only simplifies everyday procedures but also reduces the administrative burden on citizens and businesses. The paper further explores the impact of e-services on transparency and modernization of administrative processes in Croatia and on adapting the Ministry to the modern needs of its citizens
Electric stairclimbing cart
No full textTema ovog završnog rada je koncipirati i konstruirati električna kolica za penjanje po
stepenicama. Glavni cilj uređaja je olakšati transport teškog i nezgrapnog tereta ne samo po
ravnom terenu već i stepenicama. Kolica moraju biti konstruirana po pravilima ergonomije
kako bi bila se korisnicima olakšala manipulacija tereta i kolica tijekom postupka svladavanja
stepenica te kako bi se osigurala sigurnost korisnika tijekom tog opasnog posla. Uređaj mora
biti pogonjen električnim motorom te sadržavati bateriju kako bi ostao autonoman. Rad
započinje provedbom analize tržišta, definiranjem funkcijske strukture te morfološke matrice
na temelju koje se razrađuju koncepti. Odabran je optimalan koncept s kojim se išlo u daljnju
razradu, proračun kritičnih dijelova te izradu 3D CAD modela. Naposljetku je još napravljena
i tehnička dokumentacija uređaja.The topic of this final thesis is to design and construct an electric stairclimbing cart. The main
goal of the device is to facilitate the transport of heavy and bulky loads, not only on flat surfaces
but also on stairs. The cart must be designed according to ergonomic principles to ease the
handling of both the load and the cart during stair navigation while ensuring user safety during
this demanding task. The device must be powered by an electric motor and equipped with a
battery to maintain autonomy.
The project begins with a market analysis, followed by defining the functional structure and
developing a morphological matrix, which serves as the basis for concept development. The
optimal concept was selected for further refinement, including calculations of critical
components and the creation of a 3D CAD model. Finally, the technical documentation for the
device was also prepared
Simulation of a production line automation for assembling metal parts
No full textU ovom završnom radu izrađuje se simulacija pogona, izrade i sklapanja, metalnih dijelova koristeći simulacijski program Factory I/O. Rad se fokusira na konfiguriranje i povezivanje dijelova pogona u jednu autonomnu cjelinu, koja se sastoji od obrade materijala, sortiranja, sklapanja i otpremanja metalnih dijelova, upravljanu virtualnim programibilnim logičkim kontrolerom. Cilj rada je napisati programski kod ljestvičastim dijagramom pomoću Siemens TIA portala i simulirati njegov rad na programu Factory I/O u stvarnom vremenu. Rad detaljno opisuje inženjerske odluke donesene prilikom izrade simulacije i programskog koda. Rad završava prikazom implementacije metode Karnaughovih karti u programski kod, koja služi za optimizaciju programskog koda.This final thesis develops a simulation of a facility for the manufacturing and assembly of metal parts using the Factory I/O simulation program. The work focuses on configuring and connecting the main components into a single autonomous unit, which includes material processing, sorting, assembly, and dispatching of metal parts, controlled by a virtual programmable logic controller. The goal of the thesis is to write ladder diagram programming code using Siemens TIA Portal and simulate its operation on the Factory I/O program in real-time. The thesis thoroughly describes the engineering decisions made during the development of the simulation and programming code. The work concludes with the implementation of Karnaugh map methods in the programming code, which are used for optimizing the code