Automation of Task Prioritization and Team Satisfaction Monitoring Through Sentiment Analysis in Software Engineering

Analiza sentimenta u softverskom inženjerstvu danas je aktivno područje istraživanja, no još uvijek nema dovoljno testiranih i optimalnih rješenja za specifične tehničke tekstove. Ovaj rad ispituje pristupe analizi sentimenta u softverskom inženjerstvu, fokusirajući se na leksičke, modele strojnog učenja i duboke modele te njihovu primjenu na tehničkim komentarima i tiket sustavima. Posebna je pažnja usmjerena na integraciju najboljih modela u Jira i Azure okruženja radi automatizacije prioritizacije zadataka i praćenja zadovoljstva timova. Implementacija omogućuje pravovremenu identifikaciju ključnih problema, poboljšavajući upravljanje zadacima i zadovoljstvo korisnika. Razmatraju se i etički izazovi te važnost transparentnosti. Nakon usporedbe modela, zaključci i rezultati korišteni su za daljnju optimizaciju, a konačni su rezultati uključivali i povratne informacije korisnika tvrtke Rimac Technology koje su pomogle pri donošenju odluka o daljnjoj implementaciji.Sentiment analysis in software engineering is an active research area, but there are still insufficiently tested and optimal solutions for specific technical texts. This paper investigates sentiment analysis approaches in software engineering, focusing on lexical, machine learning, and deep learning models and their application to technical comments and ticketing systems. Special attention is given to integrating the best models into Jira and Azure environments for automating task prioritization and monitoring team satisfaction. The implementation enables timely identification of key issues, improving task management and user satisfaction. Ethical challenges and the importance of transparency are also discussed. After comparing the models, the conclusions and results were used for further optimization, and the final outcomes included user feedback from Rimac Technology company, which helped inform decisions regarding further implementation

Programming using frameworks

Razvoj Interneta započinje u SAD-u šezdesetih godina prošlog stoljeća kao produkt vojnih potreba. Glavni je zadatak bio razvoj slanja paketa podataka preko mreže. Veliki korak koji je doveo do ubrzanog širenja Interneta dogodio se 1990. godine uspostavljanjem jedne od najatraktivnijih mrežnih usluga, World Wide Weba. Daljnjim razvojem Interneta, došlo je do razvoja aplikacija (kojih je svakim danom sve više) i programskih jezika prilagođenih potrebama Interneta. Programski jezik JavaScript u to se vrijeme postavio kao idealno rješenje jer je zadovoljio potrebe komunikacije klijenta i servera. Daljnjim napretkom tehnologije i potrebom korisnika za modernijim sučeljima, JavaScript se dodatno razvija. Nastaju razne biblioteke koje se po potrebi uključuju (dodaju) prilikom programiranja te se ovisno o kombinaciji dodanih biblioteka mijenjaju funkcionalnosti aplikacije, a samim time pružaju i širok spektar novih mogućnosti. Biblioteke su na svom početku bile idealno rješenje, no kasnije su se neke biblioteke u sličnim ili čak istim kombinacijama uključivale u program pa su zbog toga nastali okviri (engl. framework) koji već u sebi imaju uključene najčešće korištene biblioteke. Na taj način je programeru smanjena potreba za odabirom pojedinih biblioteka, ali je za programera osigurano da na početku ima sve što je potrebno, ovisno o području tj. potrebi aplikacije koju razvija. Okviri su danas jako popularni te se velika većina web aplikacija izrađuje pomoću njih, no ipak imaju i neke mane kao što su uporaba drugačije sintakse od čistog JavaScript jezika. Obzirom da svi programeri ne poznaju JavaScript ili neku od njegovih inačica u dovoljnoj mjeri, razvili su se tzv. wrapperi. To su programska okruženja koja omogućuju programeru pisanje koda u već poznatom programskom jeziku, a wrapper, tzv. omotač, doslovno omota sloj oko napisanog koda te ga prevede u JavaScript kod ili neki drugi programski jezik, naravno ovisno o wrapperu. Prednost im je kodiranje u već poznatom jeziku, ali često postoje i mane kao što su ograničenje wrappera koji ima onoliko mogućnosti koliko ih wrapper podržava. Kako bi i studenti bili u tijeku s novim tehnologijama, na fakultetima se osmišljavaju novi kolegiji koji o njima poučavaju. Ipak, satnice na fakultetu su premale da bi se mogla dobiti konkretna znanja o svemu potrebnom za rad u realnim situacijama, ali ipak daju širu sliku što studenta čeka u budućnosti.The history of the Internet began in the USA in the 1960s as a product of military needs. The main task was to develop sending data packages using network. The big step that led to the rapid expansion of the Internet occurred in 1990 by establishing one of the most demanding network services, the World Wide Web. With the further development of the Internet, there has been an increase in the number of applications (more and more each day) and Internetbased programming languages. At that time, the programming language JavaScript was set up as an ideal solution because it met the needs of client and server communication. By further technology developing and user needs for more modern interfaces, JavaScript is evolving. Various libraries are appearing, which are optionally included when programming, and depending on the combination of the added libraries, they change the application's functionality and thus provide a wide range of features. In the beginning, libraries were the ideal solution, but later some libraries were included in the program in similar or even same combinations, which resulted developing frameworks that already include those libraries. With that option, the programmer has fewer choices but in the start has everything that is needed for the application develeoping. Frameworks are very popular today and the majority of web applications use them, but they still have some flaws like different syntax from pure JavaScript language. Since there are developers that don't know or use JavaScript language or some of versions, wrappers have been developed. They are program environments that offer writing code in a known programming language, and that wrapper, literally wrap a layer around the written code and translate it into a JavaScript code or other programming language, of course depending on the wrapper. Theirs great advantage for the programmer is coding in a language they already know, but there are often shortcomings such as wrapper limitations and having as many features as the wrapper has. In order for the students to be in the process of using new technologies, new courses are being set up at the colleges that teach them. However, number of hours are too small to be able to get specific knowledge of everything needed to work in realistic situations but still give a wider picture of what the student is looking forward to in the future

Comparative Analysis of the Costs of Building Masonry Constructions with Different Material Characteristics : Undergraduate Thesis

Ovaj rad analizira troškove i karakteristike zidanja garaže koristeći različite materijale: Porotherm, Ytong, betonski blok, Durisol, Porotherm Izo. Uspoređivani su parametri poput čvrstoće, toplinske provodljivosti i cijene. Rezultati pokazuju da Porotherm Izo pruža najbolji balans između energetske učinkovitosti i čvrstoće, dok su ostali materijali povoljniji u određenim aspektima, ali manje optimalni u cjeliniThis paper analyzes the costs and characteristics of building a garage using different materials: Porotherm, Ytong, concrete block, Durisol, Porotherm Izo. Parameters such as strength, thermal conductivity and price were compared. The results show that Porotherm Izo provides the best balance between energy efficiency and strength, while other materials are more favorable in certain aspects, but less optimal overall

CO2 Emissions in the Operation of Construction Machinery for Earthworks : Undergraduate Thesis

Emisije ugljikovog dioksida izazivaju značajan interes u istraživanju građevinske industrije zbog sve veće svijesti o učincima klimatskih promjena. Građevinarstvo je prepoznato kao jedan od ključnih sektora u Europskom zelenom planu čiji je cilj da do 2050. više nema neto emisija stakleničkih plinova. Ovaj rad analizira faktore koji utječu na emisije CO2 kod građevinskih strojeva za zemljane radove, kao što su vrsta goriva, oprema, operativni i gradilišni faktori. Na temelju učinkovitosti strojeva, prikazani su proračuni emisija CO2 te konkretni primjeri proračuna za rad bagera. Rad također ističe važnost smanjenja emisija CO2 kroz optimizaciju rada i održavanje građevinskih strojeva.Carbon dioxide emissions are a significant concern in construction industry research due to the growing awareness of climate change impacts. Construction is recognized as one of the key sectors in the European Green Deal, which aims to achieve net-zero greenhouse gas emissions by 2050. This work analyzes the factors affecting CO2 emissions from earthwork construction machinery, including fuel type, equipment, operational, and site factors. Based on machine efficiency, calculations of CO2 emissions are presented, along with specific examples of calculations for excavator operations. This work also highlights the importance of reducing CO2 emissions through the optimization and maintenance of construction machinery

Hydrological Analysis of Spring Flow on the Left Bank of Cetina: Rumin Mali, Rumin Veliki and Ruda Velika : Undergraduate Thesis

U ovom završnom radu statički su obrađeni hidrološki podaci protoka izvora na lijevoj obali rijeke Cetine: Rumin Mali, Rumin Veliki i Ruda Velika, te meteorološki podaci oborina za postaju Livno za razdoblje od 1.1.2008.-31.12.2014. godine. Na temelju tih podataka izrađena je krivulja trajanja i krivulja učestalosti. Za izvore Rumin Mali, Rumin Veliki i Ruda Velika zadani su podaci od 2008.-2014. godine. Na temelju tih podataka napravljena je krivulja trajanja za svaki izvor kao i dnevne, mjesečne i godišnje korelacijske veze između oborina Livna i zadanih izvora, kao i izvora međusobno.In this final paper, the hydrological data of the flow of springs on the left bank of the Cetina River: Rumin Mali, Rumin Veliki, and Ruda Velika, and meteorological precipitation data for the station Livno for the period from 1.1.2008 to 31.12.2014 were statically processed. year. Based on these data, a duration curve and a frequency curve were created. For the springs Rumin Mali, Rumin Veliki, and Ruda Velika, the data from 2008-2014 is given. year. Based on these data, a duration curve was created for each source, as well as daily, monthly, and annual correlations between the Livno precipitation and the given sources, as well as between the sources

Analysis of the influence of time dependent strain on the load bearing capacity of aluminium columns exposed to transient heating : doctoral thesis

U ovoj disertaciji analizira se utjecaj deformacije od puzanja na kritičnu brzinu i temperaturu otkazivanja aluminijskih stupova legure EN AW 6082 T6 izloženih nestacionarnom zagrijavanju. Nestacionarni model zagrijavanja predstavlja porast temperature uslijed konstantnoga opterećenja te na taj način simulira stvarnu situaciju prilikom požara. Trenutni propisi i norme za projektiranje aluminijskih konstrukcija na djelovanje požara ne uključuju detaljan prikaz razvoja deformacije od puzanja ni njezin utjecaj na redukciju nosivosti i brzinu otkazivanja stupova. S obzirom na znatan porast primjene aluminija i aluminijskih legura u građevinarstvu posljednjih pedesetak godina, potrebno je dodatno istražiti puzanje aluminijskih stupova jer oni spadaju u najosjetljiviji dio konstrukcije. U prilog potrebi za istraživanjem ide i činjenica da je najveća mana aluminija osjetljivost na visoke temperature jer njegove materijalne karakteristike opadaju već pri temperaturama iznad 100 °C. U uvodnom dijelu istraživanja prikazanoga u ovoj disertaciji kalibrirani su eksperimentalni rezultati na epruvetama aluminijske legure EN AW 6082 T6 kako bi se dobili parametri za odabrani model puzanja. Kalibrirani model puzanja primijenjen je na eksperimentalno-numeričku analizu dominantno tlačno opterećenih aluminijskih stupova izloženih nestacionarnom zagrijavanju. U nestacionarnim ispitivanja, upotrijebljena je niska brzina zagrijavanja jer simulira postojanje nekoga oblika protupožarne zaštite koji je zbog strogih propisa nužan u današnjim konstrukcijama. Na kraju rada provedena je parametarska analiza utjecaja niskih brzina zagrijavanja (1 °C/min – 5 °C/min) na stupove jednostavne aluminijske konstrukcije i analiziran je utjecaj deformacije od puzanja na vrijeme otkazivanja stupova. Navedena parametarska analiza provedena je na temelju usvojenoga modela puzanja utemeljenoga na rezultatima analize na aluminijskim epruvetama i na aluminijskim stupovima.This dissertation presents the analysis of the influence of creep strain on the critical speed and failure temperature of EN AW 6082 T6 aluminium columns exposed to transient heating. The model of transient heating represents an increase in temperature due to a constant load and thus simulates the real situation caused by fire. Current regulations for the design of aluminium structures exposed to fire do not include a detailed description of the development of creep strain and its influence on the reduction of load-bearing capacity and the rate of failure of the columns. Considering the significant increase in the use of aluminium and aluminium alloys in construction over the last fifty years, it is necessary to obtain a solid conclusion on the influence of creep on aluminium columns which stands for the most sensitive part of the structure. The biggest disadvantage of aluminium is its sensitivity to high temperatures since its material characteristics decrease already at temperatures above 100 °C, supporting the idea of this research. In the opening section of the research presented in this dissertation, the calibration of experimental results was carried out on test coupons of aluminium alloy EN AW 6082 T6 with the aim of obtaining parameters for the selected creep model. The calibrated creep model was applied to the experimental-numerical analysis of dominantly pressure-loaded aluminium columns exposed to transient heating. For transient tests, a low heating rate was applied because it simulates the existence of some form of fire protection that is obligatory in today's constructions due to strict regulations. The final part of the dissertation includes a parametric analysis of the influence of low heating rates (1 °C/min – 5 °C/min) of regular columns of simple aluminium construction and a comparison of the influence of creep strain on the failure time of the columns. The aforementioned parametric analysis was performed on the basis of the adopted creep model based on the results of the study carried out on aluminium test tubes and aluminium columns

Profiling of glucosinolates in different parts of the Arabis alpina using UHPLC-DAD-MS/MS

Glukozinolati su jedinstvena i važna skupina specijaliziranih metabolita u pojedinim vrstama biljaka. Kemijski su stabilni i inertni spojevi sve dok ne dođu u kontakt s enzimom mirozinazom, kada se hidrolizom pretvaraju u biološki aktivne produkte koji imaju važnu ulogu u obrani biljke. Prisutni su u biljkama reda Brassicales, a najznačajnija među njima je porodica kupusnjača. U ovom radu određen je glukozinolatni profil biljnih dijelova planinske gorušice (Arabis alpina) UHPLC- MS/MS analizom preko odgovarajućih desulfoglukozinolata. Ekstrakcija glukozinolata provedena je modificiranom ISO 9167-1 metodom. Provedenom analizom identificirano je 14 različitih glukozinolata: devet koji potječu od metionina, dva od triptofana te po jedan od valina, izoleucina i fenilalanina. Progoitrin predstavlja glukozinolat koji je pronađen u najvišim koncentracijama u svim biljnim dijelovima (cvijet 18,93 µmol/g suhog biljnog materijala, komuška 16,62 µmol/g, list 9,63 µmol/g, korijen 7,75 µmol/g, stabljika 3,28 µmol/g). Pored progoitrina, koji je C4-glukozinolat, jedini glukozinolat detektiran u svim biljnim organima bio je glukoarabin, koji predstavlja dugolančani C9-glukozinolat (najviše zastupljen u komuški, 4,18 µmol/g). Ostali glukozinolati bili su prisutni samo u pojedinim dijelovima biljke u tragovima. U ovom istraživanju po prvi put opisan je glukozinolatni profil u različitim dijelovima biljke A. alpina gdje prevladavaju glukozinolati koji potječu iz biosinteze metionina. Rezultati ovog istraživanja doprinose boljem razumijevanju kemijskog sastava vrste A. alpina te predstavljaju temelj za buduća istraživanja biološke uloge i potencijalnih bioaktivnih svojstava njezinih glukozinolata.Glucosinolates are a unique and important group of specialized metabolites found in certain plant species. They are chemically stable and inert compounds until they come into contact with the enzyme myrosinase, when they are hydrolyzed into biologically active products that play a key role in plant defense. They are present in plants of the order Brassicales, the most important ofwhich is the Brassicaceae family. In this study, the glucosinolate profile of plant parts of mountain rockcress (Arabis alpina) was determined by UHPLC-MS/MS analysis via the corresponding desulfoglucosinolates. The extraction of glucosinolates was carried out using the modified ISO 9167-1 method. The analysis detected 14 distinct: nine derived from methionine, two from tryptophan, and one each from valine, isoleucine, and phenylalanine. Progoitrin is a glucosinolate that was found in the highest concentrations in all plant parts (flower 18.93 µmol/g of dry plant material, stem 16.62 µmol/g, leaf 9.63 µmol/g, root 7.75 µmol/g, stem 3.28 µmol/g). Besides progoitrin, which is a C4-glucosinolate, the only glucosinolate detected in all plant organs was glucoarabin, which is a long-chain C9-glucosinolate (most abundant in siliquae, 4.18 µmol/g). Other glucosinolates were present only in traces in certain parts of the plant. In this research, the glucosinolate profile in different parts of the A. alpina plant is described for the first time, where glucosinolates originating from methionine biosynthesis predominate. The results of this study contribute to a better understanding of the chemical composition of A. alpina and provide a basis for future research into the biological role and potential bioactive properties of its glucosinolates

Influence of agitator position on the sorption kinetics of copper onto zeolite

U ovom radu ispitan je utjecaj pozicije propelerskog miješala na kinetiku sorpcije iona bakra na sintetskom zeolitu NaX u šaržnom reaktoru opremljenom razbijalima virova. Eksperimenti su provedeni pojedinačno za četiri različite pozicije miješala (C/H = 0,10; 0,33; 0,40; 0,50) tijekom trideset minuta, pri izotermnim uvjetima (T = 298K). Uzorkovanje je vršeno u unaprijed određenim vremenskim intervalima, a koncentracija iona bakra u otopini određena je spektrofotometrijskom analizom. Kinetička analiza dobivenih eksperimentalnih podataka napravljena je pomoću matematičkog programa Mathcad korištenjem dva kinetička modela, Blanchardovog i Weber-Morrisovog modela. Dobiveni rezultati pokazali su dobro slaganje eksperimentalnih podataka s Blanchardovim modelom. Najudaljenija pozicija miješala (C/H = 0,50) pokazala se najmanje povoljnom s obzirom na količinu sorbiranog bakra.In this study, the influence of the propeller agitator position on the kinetics of copper ion sorption onto synthetic zeolite NaX in a batch reactor equipped with baffles was investigated. Experiments were carried out individually for four different agitator positions (C/H = 0.10; 0.33; 0.40; 0.50) over a period of thirty minutes, under isothermal conditions (T = 298K). Sampling was performed at predetermined time intervals, and the concentration of copper ions in the solution was determined by spectrophotometric analysis. Kinetic analysis of the obtained experimental data was conducted using the Mathcad software, applying two kinetic models: the Blanchard model and the Weber-Morris model. The results showed that Blanchard's model better describes the kinetics of copper ions sorption on NaX zeolite. The most distant agitator position (C/H = 0.50) proved to be the least favourable in terms of the amount of copper adsorbed

Bacterial resistance to antibiotics in Acinetobacter isolates from wastewater treatment plants in Croatia

Cilj ovog istraživanja bio je ispitati fenotipsku osjetljivost izolata roda Acinetobacter na različite antibiotike. Uzorci vode su prikupljeni u uređajima za pročišćavanje otpadnih voda (UPOV) Katalinića brig i Stupe u Splitu, te na pripadajućim podmorskim ispustima. Ukupno je identificiran 91 izolat, među kojima su najzastupljeniji bili A. baumannii i A. pittii, dok su ostale vrste bile manje prisutne. Rezultati su pokazali značajnu razinu rezistencije na karbapeneme (meropenem, imipenem) i peniciline s inhibitorima β-laktamaze (piperacilin/tazobaktam, tikarcilin/klavulanska kiselina). A. baumannii je pokazao najveću učestalost rezistencije, dok je A. sichuaensis bio najosjetljiviji na testirane antibiotike. Najviša stopa rezistencije zabilježena je kod izolata iz influenta UPOV-a Katalinića brig, što može biti posljedica ulijevanja bolničkih otpadnih voda u ovaj UPOV. Naime, prethodne studije su pokazale da značajan selekcijski pritisak u takvim uvjetima povećava udio višestruko rezistentnih sojeva. Ovo istraživanje naglašava ulogu otpadnih voda kao rezervoara rezistentnih oportunističkih patogena, uključujući patogena kritičnog prioriteta, karbapenem-rezistentnog A. baumannii, kao i potrebu njihovog rigoroznog praćenja u cilju smanjenja javnozdravstvene prijetnje.The aim of this study was to examine the phenotypic sensitivity of isolates of the genus Acinetobacter to different antibiotics. Samples were collected from wastewater treatment plants (WWTP) of Katalinić brig and Stupe in Split, including their submarine outfalls. A total of 91 isolates were identified, among which A. baumannii and A. pittii were the most abundant, while other species were less present. Results showed a significant level of resistance to carbapenems (meropenem, imipenem) and penicillins with β-lactamase inhibitors (piperacillin/tazobactam, ticarcillin/clavulanic acid). A. baumannii showed the highest resistance rate whereas A. sichuaensis was the most sensitive to the antibiotics used. The highest resistance rate was recorded for isolates from the influent of UPOV Katalinić brig, which could be attributed to the presence of hospital wastewater. It was previously found that the selection pressure under such conditions increases the proportion of multiple resistant strains. The study highlights the role of wastewater as a reservoir of antibiotic-resistant opportunistic pathogens, including the WHO critical-priority pathogens, the carbapenem-resistant A. baumannii, as well as the need for their rigorous monitoring to reduce the public health threat

PHYSICAL CHARACTERISTICS OF THE HUMAN VOICE

Osim što je ljudski glas neizostavan faktor u komunikaciji, iznošenju različitih ideja i misli, isto tako je jedan od značajnih i temeljnih područja istraživanja kako u medicini tako i u fizici. Fizikalne osnove ljudskog glasa uključuju promatranje titranja glasnica kao temelja artikulacije zvuka, kao i analizu pripadajućih valnih pojava. Titranje stupca zraka u poluzatvorenoj, odnosno poluotvorenoj cijevi je jedan od fizikalnih modela ljudskog glasa. Ljudski glas je kompleksna komponenta koja se može poistovjetiti s glazbenim instrumentom jedinstvenim za svakog pojedinca.Abstract: Apart from being the indispensable component of communication, sharing different ideas and thoughts, human voice is also one of the important and fundamental fields of research in both medicine and physics. The physical basis of the human voice includes the observation of oscillation of the vocal cords and the analysis of the related wavelengths as the foundation of the articulation of sound. The oscillation of the columns of air in a semi - closed, or semi - open pipe, is one of the physical models of the human voice. Human voice is a complex component that can be compared to a musical instrument, unique to every individual