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    Recipe Realm: a mobile application for personalized storage of recipes.

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    S obzirom na sve brži tempo života, mobilne aplikacije pomažu ljudima u snalaženju u užurbanosti života, a u njih se ubrajaju i aplikacije za pohranu recepata koje čine proces kuhanja bezbolnijim za one koji ga ne vole i ugodnijim za one koji već u njemu uživaju. Na tržištu postoje razne aplikacije koje omogućuju pohranu i dijeljenje recepata, a neke koriste umjetnu inteligenciju za otkrivanje novih recepata ili nude kreiranje popisa za kupovinu. Ipak, mnoge od njih ne omogućuju unos važnih detalja poput nutritivnih vrijednosti i vremena pripreme. Aplikacija ovog rada razvijena je u razvojnom okruženju Android Studio uz programski jezik Kotlin, deklarativni okvir Jetpack Compose za dizajn korisničkog sučelja, koristi MVVM strukturu te Firebase za pohranu podataka. Uključuje funkcionalnosti kao što su detaljan unos recepata, pregled i pretraga, kategorizacija i nasumično generiranje plana prehrane. Testiranjem na grupi od deset ispitanika pokazano je da su glavni ciljevi aplikacije zadovoljeni uz mogućnost naknadnih poboljšanja.Given the increasingly fast pace of life, mobile applications help people navigate the hustle and bustle of everyday life. Among these are recipe storage apps, which make the cooking process less burdensome for those who don’t enjoy it and more enjoyable for those who do. There are various apps on the market that allow users to store and share recipes, with some even using artificial intelligence to discover new recipes or offer the creation of shopping lists. However, many of these apps lack the ability to input important details like nutritional values and preparation times. The application presented in this work was developed in Android Studio using the Kotlin programming language and the Jetpack Compose framework for UI design. It employs the MVVM architecture and uses Firebase for data storage. The app includes features such as detailed recipe input, viewing and searching, categorization, and random meal plan generation. Testing with a group of ten participants showed that the main goals of the app were met, with potential for future improvements

    Malfunctions and methods of protection of three-phase transformers

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    Ovaj rad obrađuje temu sustava za besprekidno napajanje potrošača. Na početku rada opisani su problemi i zahtjevi koji se postavljaju pred ovakve sustave, te su opisani osnovni tipovi ovakvih sustava koji će nam pomoći u rješavanju ovih problema i koji će odgovoriti na zahtjeve koji se postavljaju pred njih. Nakon toga su obrađeni statički sustavi za besprekidna napajanja, odnosno elektronički sustavi besprekidnih napajanja, njihovi glavni dijelovi, topološke strukture i načini rada. Zatim su objašnjeni i ukratko su opisane funkcije i načini rada dizel-električnih agregata koji upotpunjuju funkciju elektroničkih sustava za besprekidno napajanje. Također su opisani i kombinirani sustavi koji se sastoje od te dvije vrste besprekidnih napajanja, te razlozi zašto se oni koriste. Za kraj su ostavljene osnove projektiranja i održavanja sustava za besprekidna napajanja potrošača, te norme koje se tiču ovih sustava.This paper addresses the topic of uninterrupted power supply systems for consumers. It begins by describing the problems and requirements that such systems must meet and provides an overview of the basic types of these systems, which can help solve these problems and meet the necessary requirements. The paper then discusses static systems for uninterrupted power supply, specifically electronic uninterrupted power supply systems, their main components, topological structures, and operating methods. It also explains the functions and modes of operation of diesel-electric generators, which complement the function of electronic uninterrupted power systems. Combined systems, consisting of both types of uninterrupted power supplies, are described, along with the reasons for their use. Finally, the basics of designing and maintaining uninterrupted power supply systems for consumers, as well as the standards related to these systems, are presented

    Energy Efficiency of Single-Board Computers

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    Rastući zahtjevi za održivim tehnološkim rješenjima čine single-board računala privlačnom alternativom tradicionalnim x86 sustavima zbog njihove energetske učinkovitosti. SBC-evi, temeljeni na ARM arhitekturi, pružaju zadovoljavajuće performanse uz nisku potrošnju energije, što ih čini pogodnima za scenarije u kojima su radna opterećenja manja, a energetska učinkovitost prioritet. U ovom radu istražena je energetska učinkovitost SBC-eva u usporedbi s jednim x86 računalom. Eksperimenti su obuhvatili mjerenje potrošnje energije u stanju mirovanja, te pod različitim radnim opterećenjima, uključujući opterećenje procesora i memorije. Rezultati pokazuju da SBCevi troše značajno manje energije u stanju mirovanja i pri manjim opterećenjima, dok x86 sustavi nadmašuju SBC-eve u pogledu procesorske snage i efikasnosti pri većim opterećenjima. Zaključeno je da su SBC-evi optimalan izbor za aplikacije u kojima je energetska učinkovitost ključna, osobito u scenarijima gdje uređaji veći dio vremena provode u stanju mirovanja ili pod manjim opterećenjima.The growing demand for sustainable technological solutions makes single-board computers an attractive alternative to traditional x86 systems due to their energy efficiency. SBCs, based on ARM architecture, offer satisfactory performance with low energy consumption, making them suitable for scenarios where workloads are lighter and energy efficiency is a priority. This paper explores the energy efficiency of SBCs in comparison to an x86 computer. Experiments included measuring power consumption in idle states and under various workloads, including CPU and memory load. The results show that SBCs consume significantly less energy in idle states and under lower workloads, while x86 systems outperform SBCs in terms of processing power and efficiency under higher workloads. It is concluded that SBCs are the optimal choice for applications where energy efficiency is crucial, especially in scenarios where devices spend most of their time in idle states or under light workloads

    Designing photovoltaic systems of prosumers

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    U ovom diplomskom radu opisan je postupak projektiranja fotonaponskih sustava. U uvodnom dijelu opisana je energija Sunca i prednosti obnovljivih izvora energije. Nakon uvoda objašnjena je struktura fotonaponske ćelije, nadomjesna shema i strujno naponska karakteristika ćelije, opisani su FN moduli i vrste fotonaponskih sustava. Nakon osnovnih informacija o fotonaponskim tehnologijama slijedi detaljan opis postupka projektiranja fotonaponske elektrane kupac s vlastitom proizvodnjom. U ovom poglavlju opisan je svaki korak postupka projektiranja fotonaponske elektrane, a opisani koraci su: dogovor s investitorom, istraživanje lokacije, dokumentacija građevine, postupak priključenja kupca s vlastitom proizvodnjom, postavljanje fotonaponskih modula na krov, stringovi, zaštita od udara groma i dimenzioniranje AC niskonaponskog mrežnog kabela i opreme. Ovaj postupak projektiranja odnosi se na fotonaponsku elektranu snage 49,90 kW postavljenu na krov građevine.This thesis describes the process of designing photovoltaic system. The introductory part describes the energy of the Sun and the adventages of renewable energy sources. After the introduction, the structure of the photovoltaic cell, the cell scheme and the current-voltage characteristics of the cell are explained. Photovoltaic modules and types of photovoltaic systems are described as well. After the basic information about photovoltaic technologies, a detailed description of the process of designing a photovoltaic power plant for the customer with its own production follows. That chapter describes each step of the photovoltaic power plant design process, including: agreement with the investor, location research, building documentation, the process of connecting a customer with self-production, installation of photovoltaic modules on the roof, strings, lightning protection and sizing of the AC low-voltage grid cable and equipment, This design process pertains to a 49,90 kW photovoltaic power plant installed on a building's roof

    Web portal for football fan group

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    Cilj ovog završnog rada je izrada web portala za organizaciju odlazaka na utakmice nogometnog kluba “Real Madrid“ te objavljivanje raznih novosti vezanih za klub. Ovaj je web portal napravljen koristeći MongoDB za bazu podataka, HTML,CSS,Vue.js te Express.js. Web portal se pokreće u pregledniku preko Visual Studio Code. Nakon prijave na stranicu, korisnici imaju mogućnost komentiranja objava, te uvid u sve novosti vezane za klub i organizaciju za odlazak na utakmice. Administrator pak može brisati tuđe komentare koji se smatraju ne prikladnima. Također ima mogućnost unosa, brisanja i uređivanja objava vezanih za organizaciju za odlazak na utakmice, novosti vezanih za klub te aktivnih igrača i njihovih statistika. Administrator u svom izborniku vidi stranicu Kontakt, Galerija, Novosti, Utakmice, O klubu, Igrači, Dodaj novost, Dodaj igrača, Dodaj utakmicu i Odjava, a prijavljeni korisnici vide sve što i administrator osim stranica Dodaj igrača, Dodaj utakmicu i Dodaj novost. ključne riječi (hrvatski ): baza podataka, navijački klub, organizacija, web portal, web tehnologijeThe goal of this final project is to create a web portal for organizing trips to matches of the football club "Real Madrid" and publishing various news related to the club. This web portal is built using MongoDB for the database, HTML, CSS, Vue.js, and Express.js. The portal runs in the browser through Visual Studio Code. After logging in, users have the option to comment on posts and access all news related to the club and organization of match trips. The administrator, on the other hand, can delete comments deemed inappropriate. They also have the ability to add, delete, and edit posts related to organizing match trips, news related to the club, active players and their statistics. In their menu, the administrator sees the following pages: Contact, Gallery, News, Matches, About the Club , Players, Add News, Add Player, Add Match, and Logout, while logged- in users see everything the administrator does except for the Add Player, Add Match, and Add News pages. database, fan club, organization, web portal, web technologie

    Forklift simulator in virtual reality

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    U ovom radu, prvo poglavlje uvodi temu i objašnjava osnovne pojmove simulacije vožnje viličara u virtualnoj stvarnosti. U drugom poglavlju prikazan je pregled primjene virtualne stvarnosti, posebno u obuci radnika u sigurnom okruženju. Treće poglavlje opisuje glavne dijelove simulacije poput vožnje, skretanja, upravljanja vilicom i interakcije s okolinom. Četvrto poglavlje bavi se izborom softvera i alata potrebnih za razvoj simulacije u Unity okruženju. U petom poglavlju razrađena je implementacija simulacije, s naglaskom na glavne funkcije upravljanja i interakcije. Na kraju, šesto poglavlje donosi zaključke o prednostima virtualne stvarnosti u obuci radnika i njezinoj primjeni u raznim industrijama.This paper starts with an introduction to the topic, explaining the basic concepts of forklift driving simulation in virtual reality. The second chapter provides an overview of how virtual reality is used, especially for training workers in a safe environment. The third chapter describes the main components of the simulation, including driving, steering, fork control, and interaction with the surroundings. The fourth chapter covers the selection of software tools needed to develop the simulation in Unity. In the fifth chapter, the implementation of the simulation is discussed, focusing on key control and interaction functions. Finally, the sixth chapter provides conclusions on the benefits of virtual reality for worker training and its potential applications in different industries

    Digital transformation of metrology

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    U diplomskom radu se opisuje digitalna transformacija mjeriteljstva koja uključuje napredne tehnologije za mjerenje, analizu i obradu podataka. Opisane su tehnologije strojnog učenja, umjetne inteligencije, IoT te analiza i procjena kvalitete velikih podataka u različitim područjima mjeriteljstva. Navedeni su glavni mjeriteljski instituti u Europi i njihova strategija digitalizacije. Objašnjava se infrastruktura kvalitete i kalibracija. Na primjeru prikupljanja podataka s temperaturnih senzora pomoću Raspberry Pi-a je prikazana metoda ko-kalibracije senzora.The thesis describes the digital transformation of metrology, which includes advanced technologies for measurement, analysis, and data processing. It covers technologies such as machine learning, artificial intelligence, IoT, and the analysis and evaluation of big data quality in various metrology fields. The main metrology institutes in Europe and their digitalization strategies are presented. The quality infrastructure and calibration are explained. Using the example of data collection from temperature sensors with Raspberry Pi, the method of sensor co-calibration is demonstrated

    Drafting of a template for a laboratory exercise on the basis of physical models of buck converters and inductive load

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    sažetak (hrvatski): Analiziran je rad silaznog pretvarača u kontinuiranom režimu rada. Napisane su jednadžbe mreže i prikazani su očekivani valni oblici. Napravljena je maketa silaznog pretvarača 12 V / 70 mA i opisani su podsustavi pretvarača. Opisan je cijeli postupak izrade makete, od izrade tiskane pločice, te sastavljanje makete. Izmjerene su i analizirane veličine i valni oblici napona i struja ventila i trošila za maketu koja je izrađena u radu i maketu koja je preuzeta za potrebe rada. Također su izvršena mjerenja na osciloskopu za određivanje faktor vođenja i uspoređene su razlike između stvarnog i očekivanog faktora vođenja za obje makete.abstract: The operation of a buck converter in continuous mode has been analyzed. Network equations were written, and the expected waveforms were presented. A 12 V / 70 mA buck converter model was built, and the subsystems of the converter were described. The entire process of model creation was explained, from the production of the printed circuit board to the assembly of the model. Voltage and current values and waveforms for the switch and load were measured and analyzed for both the model built in this work and the model acquired for the purpose of the study. Additionally, oscilloscope measurements were performed to determine the duty cycle, and the differences between the actual and expected duty cycles for both models were compared

    A system for buying tickets and storing them in the blockchain using smart contracts

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    Sustav za kupnju karata i njihovo spremanje u blockchain koristeći pametne ugovore je projekt koji prikazuje kupovanje i rezerviranje karte za kino pomoću pametnih ugovora, blockchaina i kriptovaluta. Uz pisani dio diplomskog rada, napravljena je i web aplikacija koja pruža korisnicima rezerviranje sjedala za odabranu projekciju, spremanje na blockchain u pametni ugovor na Sepolia Testnet mreži, te pregled svih korisnikovih kupljenih karata. U pisanom dijelu diplomskog rada objašnjene su korištene tehnologije, izrada svakog dijela aplikacije i korištena logika za ostvarivanje funkcionalnosti, popraćeno slikama i dodatnim objašnjenjima na mjestima gdje je to potrebno. Priložen je i cijeli kod aplikacije kako bi se mogao vidjeti način izrade web aplikacije.blockchain, Ethereum, kino, kupnja karata, pametni ugovor abstract: A system for purchasing tickets and storing them in the blockchain using smart contracts is a project that demonstrates the purchase and reservation of a cinema ticket using smart contracts, blockchain and cryptocurrencies. In addition to the written part of the thesis, a web application was created that provides users with seat reservations for the selected screening, as well as saving on the blockchain in a smart contract on the Sepolia Testnet network, an overview of all the user's purchased tickets. The written part of the thesis explains the technologies used, the creation of each part of the application and the logic used to achieve functionality, accompanied by images and additional explanations where necessary. The entire application code is also attached so that you can see how to create a web application

    Low-voltage grid - integration with RES

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    sažetak (hrvatski): U ovom diplomskom radu obrađeni su osnovni pojmovi obnovljivih izvora energija s fokusom na solarnu energiju, niskonaponske mreže, zaštita i planiranje niskonaponske mreže te integracija obnovljivih izvora i niskonaponske mreže. Napravljen je proračun utjecaja fotonaponske elektrane na niskonaponsku mrežu s kojim se pokazuje kako fotonaponske elektrane utječu na mrežu i na zaštitu mreže. Proračun je pokazao da fotonaponske elektrane imaju pozitivan utjecaj na mrežu tako što reguliraju napon mreže i smanjuju gubitke mreže i lošu kvalitetu električne energije.abstract: In this master's thesis, the basic concepts of renewable energy sources with a focus on solar energy, low-voltage networks, protection and planning of low-voltage networks and the integration of renewable sources and low-voltage networks are covered. A calculation of the influence of the photovoltaic power plant on the low-voltage network was made, which shows how photovoltaic power plants affect the network and network protection. The calculation showed that photovoltaic power plants have a positive impact on the grid by regulating the grid voltage and reducing grid losses and poor power quality

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