Repository of Josip Juraj Strossmayer University of Osijek
Not a member yet
37744 research outputs found
Sort by
Biological characteristics of critically endangered species of butterflies (Rhopalocera) in Croatian fauna
No full textLeptire (Lepidoptera) ubrajamo među najbrojnije i najraznolikije skupine
životinja. Nažalost, pojačana urbanizacija, intenziviranje poljoprivredne proizvodnje kao i zarašćivanje
livadnih površina - najvažnijih staništa leptira - posljedično utječu na pad brojnosti leptira. Iz tih razloga,
izdvajamo osam kritično ugroženih vrsta danjih leptira unutar hrvatske faune svrstanih u četiri porodice.
Opstanak populacija leptira, posebno vrsta unutar roda Phengaris, ovisi o tipu staništa i prisutnosti
ovipozicijskih biljaka. Kako bi pratili status kritično ugroženih vrsta leptira, nužna su sustavna i kontinuirana
istraživanja.Butterflies (Lepidoptera) are one of the largest and most diverse group of animals.
Unfortunately, increased urbanization, intensification of agricultural production and overgrowth of meadow
areas - the most important habitats of butterflies - have resulted in decline in the number of butterflies. For
these reasons, we issue eight critically endangered species of butterflies (Rhopalocera) within Croatian fauna
classified into four families. Survival of populations, especially species of the genus Phengaris, depends on
habitat type and the presence of oviposition plants. In order to monitor the status of critically endangered
butterfly species, systematic and continuous research is necessary
Technologies of precise dairy cattle breeding to early prediction of some metabolic disorders
No full textOvo istraživanje imalo je za cilj razviti model za ranu detekciju metaboličkih poremećaja (acidoze i ketoze) kod Holstein krava i procijeniti kako on može smanjiti gubitke u proizvodnji mlijeka te poboljšati održivost farmi. Istraživanje je obuhvatilo analizu dnevnih proizvodnih svojstava, biokemijskih pokazatelja i hematoloških parametara za procjenu metaboličkog statusa, kao i određivanje prevalencije metaboličkih poremećaja kod hrvatskih Holstein krava. Podaci iz baze kontrole mliječnosti (3.856.453 zapisa) korišteni su za istraživanje veze između komponenti mlijeka i metaboličkih poremećaja. Rezultati su pokazali da su krave u riziku od acidoze imale povišene razine AST, GGT, PRO, Fe i Ca, dok je ketoza bila povezana s višim razinama GUK, PRO, TGC i Ca. Prevalencija metaboličkih poremećaja bila je 44,56%, pri čemu je 31,15% krava bilo u riziku od acidoze, a 13,42% od ketoze. Sezonski i faktori veličine farmi utjecali su na pojavu ovih poremećaja. Istraživanje je također pokazalo da metabolički poremećaji negativno utječu na proizvodnju mlijeka, osobito kod krava s ketoza, dok su krave s acidozom pokazale smanjenje proizvodnje mlijeka u ranoj laktaciji. Istraživanje je istaknulo da rana detekcija i prevencija mogu značajno smanjiti ekonomske gubitke, poboljšati zdravlje stada i povećati održivost farmi, doprinosući smanjenju negativnih utjecaja na okoliš poput emisije amonijaka.This research aimed to develop a model for the early detection of metabolic disorders (acidosis and ketosis) in Holstein cows and assess how it can reduce milk production losses and improve farm sustainability. The study involved analyzing daily production traits, biochemical indicators, and hematological parameters to assess metabolic status, as well as determining the prevalence of metabolic disorders in Croatian Holstein cows. Milk recording data (3,856,453 records) were used to explore the relationship between milk components and metabolic disorders. Results showed that cows at risk of acidosis had elevated levels of AST, GGT, PRO, Fe, and Ca, while ketosis was linked to higher GUK, PRO, TGC, and Ca levels. The prevalence of metabolic disorders was found to be 44.56%, with 31.15% of cows at risk for acidosis and 13.42% for ketosis. Seasonal and farm size factors influenced the occurrence of these disorders. The study also demonstrated that metabolic disorders negatively impacted milk yield, especially in cows with ketosis, while cows with acidosis showed reduced milk production in early lactation. The research highlighted that early detection and prevention could significantly reduce economic losses, improve herd health, and enhance farm sustainability, contributing to a decrease in environmental impacts such as ammonia emissions
Management in educvation
No full textOvaj rad analizira značaj menadžmenta u obrazovnom sustavu, s posebnim naglaskom na srednje obrazovanje, koje predstavlja važnu prekretnicu u životu pojedinca, na osnovu čijeg je kolektiva provedena anketa. Učinkovito upravljanje obrazovnim institucijama ključno je za osiguranje funkcionalnog, produktivnog i održivog sustava. Menadžment u obrazovanju obuhvaća planiranje, organizaciju i upravljanje resursima, kao i motiviranje zaposlenika, čime se izravno utječe na kvalitetu nastave i obrazovne rezultate.
Rad naglašava da kvalitetan menadžment omogućuje bolje iskorištavanje ljudskih, materijalnih i financijskih resursa, kao i primjenu suvremenih tehnologija i metoda u obrazovnom procesu. Osim toga, upravitelji obrazovnih ustanova imaju ključnu ulogu u prilagodbi promjenama u društvu, tehnologiji i zakonodavstvu te u stvaranju poticajnog okruženja za sve sudionike obrazovnog procesa.
U okviru istraživačkog dijela rada provedena je anketa među zaposlenicima srednjih škola kako bi se prikupili podaci o njihovim stavovima i iskustvima u vezi s organizacijom škole, načinima upravljanja te radnom atmosferom. Upitnik je obuhvatio različite aspekte menadžmenta, uključujući internu komunikaciju, ulogu uprave, kao i faktore motivacije i zadovoljstva zaposlenika. Rezultati istraživanja bit će detaljno analizirani u kasnijim dijelovima rada.
Zaključno, istraživanje će ponuditi konkretne prijedloge za unapređenje organizacijske klime, povećanje motivacije zaposlenika te poboljšanje cjelokupne kvalitete obrazovnog sustava.This paper analyzes the significance of management in the educational system, with a particular emphasis on secondary education, which represents an important milestone in an individual's life, based on a survey conducted among its collective. Effective management of educational institutions is crucial for ensuring a functional, productive, and sustainable system. Management in education encompasses planning, organization, and resource management, as well as motivating employees, thereby directly impacting the quality of teaching and educational outcomes. The paper emphasizes that quality management allows for better utilization of human, material, and financial resources, as well as the application of modern technologies and methods in the educational process. Furthermore, managers of educational institutions play a key role in adapting to changes in society, technology, and legislation, and in creating a supportive environment for all participants in the educational process. As part of the research section of the paper, a survey was conducted among high school employees to gather data on their views and experiences regarding school organization, management methods, and the working atmosphere. The questionnaire covered various aspects of management, including internal communication, the role of administration, as well as factors influencing employee motivation and satisfaction. The results of the research will be analyzed in detail in the later sections of the paper. In conclusion, the research will offer concrete proposals for improving the organizational climate, increasing employee motivation, and enhancing the overall quality of the educational system
Izazovi u vođenju i upravljanju školom od prošlosti prema sadašnjosti
No full textU uvjetima kontinuiranih promjena koje su prisutne u socijalnim, kulturnim, političkim, globalnim, nacionalnim, tehnološkim, znanstvenim i osobnim odrednicama, škola i školstvo zauzimaju posebno mjesto. Promjene u školi i školstvu ogledaju se kroz prizmu svih navedenih događanja. Fenomen vođenja i upravljanja u hrvatskom javnom školstvu moguće je pratiti od donošenja Općeg školskoga reda 1774. godine pa do današnjih dana. U ranijim su istraživanjima utvrđeni eksterni i interni oblici upravljanja vidljivi kroz upravne organe, upravne školske organe i upravne organe u školama. Najveći interes školske prakse i javnosti izazvali su općinski školski odbori i mjesni školski nadzornici.
Kako bismo lakše razumjeli sadašnjost, posebno je važno da se u suvremenim istraživanjima ove problematike osvrnemo na povijesna iskustva iz ovoga područja. Brojne se promjene danas u društvu različito interpretiraju u kontekstu škole, a obrazovanju se ponekad daju nadnaravna svojstva smatrajući ga panacejom za sve. No znamo da tomu nije tako. Stoga je cilj ovoga poglavlja dati uvid u bogati povijesni kontekst s naglaskom za kreiranje smjernica k unaprjeđivanju školske prakse koja svoj temelj ima upravo u uspješnom vođenju i upravljanju onih koji su na čelu odgojno-obrazovnih ustanova − ravnatelja. Vodeći se svjetskim primjerima proučavanja i istraživanja povijesnih fenomena, pomažemo si u planiraju novih izazova. Poučeni poviješću, stvaramo preduvjete za unapređenje i rast svega onoga što se kroz povijest pokazalo manjkavi
Supervision procedure in the Tax Administration with a special review on supervision of fiscalization in cash transactions
No full textPostupak nadzora u Poreznoj upravi ima ključnu ulogu u osiguravanju pravilnog i zakonitog prikupljanja poreza, što doprinosi financijskoj stabilnosti države. Posebno mjesto u ovom procesu zauzima nadzor fiskalizacije u prometu gotovinom, koji je uveden kao dio reforme s ciljem suzbijanja sive ekonomije i povećanja transparentnosti poslovanja. U ovom radu analizira se zakonski okvir, postupak provedbe nadzora i uloga Porezne uprave u praćenju primjene fiskalizacije. Naglasak je stavljen na praktične aspekte nadzora i izazove s kojima se inspektori suočavaju u detektiranju nepravilnosti. Zaključuje se kako je fiskalizacija značajan alat za poboljšanje porezne discipline, ali zahtijeva stalno unapređenje i prilagodbu novim izazovima.The tax administration's oversight process plays a crucial role in ensuring the proper and lawful collection of taxes, contributing to the financial stability of the state. A significant aspect of this process is the oversight of cash transaction fiscalization, introduced as part of a reform aimed at combating the shadow economy and enhancing business transparency. This paper examines the legal framework, the supervision process, and the role of the Tax Administration in monitoring fiscalization compliance. Emphasis is placed on the practical aspects of oversight and the challenges inspectors face in identifying irregularities. The conclusion highlights that fiscalization is a vital tool for improving tax discipline, though it requires continuous development and adaptation to new challenges
The role of NGOs in preventing and fighting domestic violence against woman and domestic violence
No full textU radu se analizira što su nevladine organizacije te koje su njihove aktivnosti i što sve obuhvaćaju, na koji način pružaju podršku žrtvama i što sve zagovaraju i lobiraju, njihove uloge i inicijative, projekti i kampanje i izazovi i društvene prepreke s kojima se susreću. U trećem poglavlju pobliže je definirano nasilje u obitelji, koji su njegovi oblici i uloge nevladinih organizacija u Republici Hrvatskoj koje se bave sprječavanjem nasilja u obitelji, ali i što su to udruge. Naime, navedeno je i obrađeno nekoliko udruga te metodom deskripcije opisano s čime se bave i kako pomažu ženama i djeci žrtvama nasilja u obitelji. Također je obrađena tema koja se rijetko spominje, a to je nasilje djece nad roditeljima. Sljedeće poglavlje nam daje uvid u statističke podatke nasilje u obitelji Ministarstva unutarnjih poslova Republike Hrvatske u vremenskom razdoblju od 2020. do 2023. godine, ali i pravni okvir za suzbijanje prekršaja i kaznenih djela nasilja u obitelji u Republici Hrvatskoj, te što je Istanbulska konvencija i GREVIO. U cijelom svijetu, ove udruge igraju vitalnu ulogu u stvaranju sigurnijeg okruženja za žene i obitelji, potičući društvo na aktivno sudjelovanje u borbi protiv nasilja.The paper analyzes what non-governmental organizations are and what their activities are and what they include, how they provide support to the victims and what they advocate and lobby for, their roles and initiatives, projects and campaigns, challenges and social obstacles they face. In the third chapter, domestic violence is defined in more detail, what are its forms and the roles of non-governmental organizations in the Republic of Croatia dealing with the prevention of domestic violence, as well as what these associations are. Namely, several associations were listed and discussed, and by using the method of description was described what they do and how they help woman and children who are victims of domestic violence. A topic that is rarely mentioned is also covered, which is violence of children against their parents. The following chapter gives us insight into the statistical data on domestic violence of the Ministry of the Interior of the Republic of Croatia in the period of from 2020. to 2023., as well as the legal framework for combating misdemeanors and criminal acts of domestic violence in the Republic of Croatia, and what the Istanbul Convention and GREVIO is. All over the world, these associations play a vital role in creating a safer environment for women and families, encouraging society to actively participate in the fight against violence
Prevention of Disorder at Sports Competition in Republic of Croatia
No full textNasilje i neredi na športskim natjecanjima potječu još iz doba antike, a svoju eskalaciju su doživjeli u moderno doba rezultirajući potrebom usvajanja propisa s ciljem suzbijanja nereda i nasilja navijača. U radu je prikazan tijek postupka prilikom održavanja športskog natjecanja, od obveza organizatora športskog natjecanja, policije i drugih tijela uključenih na području sigurnosti provedbe natjecanja, preventivnih i represivnih mjera koje se mogu izreći prekršiteljima koji se protupravno ponašaju, odgovornosti ostalih sudionika za propuste, te je na kraju rada prikazan statistički pregled kretanja broja predmetnih prekršaja kroz desetogodišnje razdoblje.Violence and riots at sports competitions date back to antiquity, and have seen their escalation in modern times, resulting in the need to adopt regulations aimed at suppressing riots and fan violence. The paper presents the course of the procedure when holding a sports competition, from the obligations of the organizers of the sports competition, the police and other bodies involved in the field of safety of the competition, preventive and repressive measures that can be imposed on violators who behave illegally, the responsibility of other participants for omissions, and at the end of the paper, a statistical overview of the trend in the number of offenses in question over a ten-year period is presented
Creative andragogic methods in teaching young people who have completed formal education
No full textThe changes that are taking place at the European and global levels and in national educational policies affect adult education systems, the professional status of andragogues, but also the determination of the competencies they need. We can say that today's conditions of adult education are far different from those that prevailed in the last decade. In the last ten years, lifelong education has become imperative for success and one of the conditions for survival on the global scene. Today, when the target group is no longer just students in the immediate vicinity of higher education institutions, but citizens from all over the world, we need to think about teaching in foreign languages, teaching in an online environment, as well as about current and potential methods and procedures that will creatively contribute to the competences of individuals and their competitiveness on the labor market. With all the changing components in education and teaching at all levels, the only constant is learning and acquisition of knowledge throughout life. The concept of lifelong education pushes the boundaries of education that does not end with formal education and enables career changes, as well as changes in profession and qualifications, even after formal education in adulthood, and the acquisition of additional competencies. This paper presents creative andragogical methods that have emerged from the world of entrepreneurship, and have gradually entered the field of education and teaching, particularly among the younger population who have just graduated from the formal education system but wish to retrain or further educate and improve their skills in their profession to enhance their competitiveness in the open labour market
DC motor speed controller
No full textAnalizirali smo istosmjerni motor od njegovih dijelova do funkcije svakog dijela posebno. Detaljno smo objasnili matematički model i primjenu DC motora u životnim okolnostima. Opisano je ponašanje regulatora promjenom otpora i napona te također principi automatskog upravljanja i kočenja DC motora. Spomenuli smo i vrste kočenja elektromotornih pogona te svaki objasnili te glavni i pomoćni regulator.We analyzed a direct current motor, from its components to the function of each part individually. We provided a detailed explanation of the mathematical model and the application of DC motors in everyday situations. We described how the controller behaves by adjusting resistance and voltage, as well as the principles of automatic control and braking in DC motors. We also mentioned the types of braking methods in electric motor drives and explained each one, including the main and auxiliary controllers
Shallow foundation bearing capacity model test
No full textTema ovog završnog rada je modelsko ispitivanje nosivosti tla ispod plitkog temelja. U teorijskom dijelu prikazana je definicija samog temelja kao dijela cjelokupne građevine, njegova važnost u održavanju stabilnosti i nosivosti te osnovne podjele temelja. Opisan je međusoban odnos između tla, temelja i konstrukcije koji je ključan za pravilno funkcioniranje građevine. U nastavku se opisuje što je granična nosivost prema Eurokodu 7 i ponuđene su metode pomoću kojih je moguće riješiti definirani problem. Potom je naveden primjer numeričkog modela koji je vezan uz navedeni problem. Praktični dio završnog rada sadrži pokus ispitivanja nosivosti tla ispod temelja na kojeg se opterećenje vrši pomoću preše. Prikazani su rezultati pokusa.The subject of this final paper is the model testing of loading-bearing capacity of the soil under shallow foundations. The theoretical part shows the definition of the foundation itself as part of the overall structure, its importance in maintaining stability and load-bearing capacity and the basic divison of the foundation. It describes the relationship between the ground, the foundation and the structure, which is crucial for the proper functioning of the building. The following describes what the limiting load according to Eurocode 7 is and offers methods by which the defined problem can be solved. An example of a physical and numerical model related to the problem is then given.
The practical part of the final work consists of an experiment to test the load-bearing capacity of the soil under the foundation on which the load is applied by power press machine. The results of the experiments are shown