328 research outputs found
Parametri za detekciju i lociranje puknuÄa cijevi vodoopskrbnog sustava
U radu je istražena moguÄnost detekcije i lociranja puknuÄa cijevi unutar izoliranog dijela sustava vodoopskrbe, tj. kontrolirane zone na temelju poznavanja vrijednosti pet parametra. Ti parametri bili su po jedna veliÄina protoka i tlaka mjerene na ulazu u sustav, te tri veliÄine tlaka mjerene na razliÄitim lokacijama unutar sustava. Izmjerene vrijednosti svih pet parametra su prikupljane i bilježene kontinuirano u vremenu. Za istraživanje su koriÅ”teni podaci o vrijednostima veliÄina protoka i tlaka po satima i danima u vremenskom razdoblju od jedne godine, na naÄin da su hidrauliÄkim modelom simulirana hidrauliÄka stanja sa i bez puknuÄa cjevovoda s razliÄitim protocima curenja. Ovi podaci su koriÅ”teni kao ulazi u neuronske mreže, dok je primarno kao izlazna veliÄina razmatrano stanje puknuÄa, a sekundarno su, ukoliko je puknuÄe nastalo, izlazne veliÄine bile prostorne koordinate njegove lokacije. \Nakon provedenih simulacija razliÄitih stanja sa i bez puknuÄa unutar vodoopskrbne mreže ustanovljeno je da se pomoÄu dobro modeliranih neuronskih mreža odabrani parametri mogu iskoristiti za dobivanje informacije o pojavi puknuÄa cijevi. \Neuronske mreže modelirane u svrhu lociranja puknuÄa cijevi pokazale su da s poveÄanjem protoka iz cijevi nastalog uslijed njenog puknuÄa, pogreÅ”ka kod odreÄivanja lokacije puknuÄa linearno pada. MeÄutim, nije ostvaren dovoljan nagib tog pravca kod kojeg bi se, za neki realno oÄekivani protok puknuÄa, pogreÅ”ka lociranja puknuÄa smanjila na prihvatljivu vrijednost
Mjerenje momentne karakteristike malih motora
Momentna karakteristika u ovisnosti o struji te brzini vrtnje jedna je od najbitnijih karakteristika motora.
Ovim radom opisane su momentne karakteristike razliÄitih motora koje su popraÄene odgovarajuÄim formulama te naÄini mjerenja momenta kao i specifikacije malih motora na kojima su se i vrÅ”ila mjerenja. Napravljen je ureÄaj koji mjeri momente i brzine vrtnje pomoÄu senzora isprogramiranih arduinom. Na temelju dobivenih rezultata mjerenja momenta, brzine vrtnje i struje nacrtane su karakteristike momenta u ovisnosti o brzini vrtnje i struji. Analizirani su podaci dobiveni mjerenjem, usporeÄeni sa teoretskim, te time dobiveni konaÄni zakljuÄci.One of the most important cahracteristics of an electric motor is a torque characteristic in dependence of an electric current and rotational speed.
In this paper, torque characteristics for different kind of motors are shown, which are followed by appropriate formulae and methods for measuring torque as well as the specifications of small motors in which have been conducted measurements. It was made a device that measure the torque and speed sensors programmed using the Arduino. On the basis of measuring results of torque, rotational speed and current it is made an torque characteristic in dependence of an electric current and rotational speed. Data have been analyzed obtained by measuring, compared with a theoretical, and then thus obtained final conclusions
Problematika braka i obitelji u okružnicama i poslanicama biskupa J. J. Strossmayera
Kada se o Strossmayeru govori kao o meceni, politiÄaru, govorniku i prosvjetitelju, onda je to o Äemu su mnogi Äuli ili Äitali. Kako laici, tako i klerici znaju da je Strossmayer bio iznimno angažiran biskup. Äini se da je upravo njegova biskupska služba sustavno manje vrednovana u govorima ili pisanim raspravama. Stoga je prvotna namjera ovoga rada približiti jedno od podruÄja Strossmayerova djelovanja kao biskupa, i to putem pisane komunikacije sa sveÄenstvom i vjernicima. Biskupova pisana rijeÄ predstavlja se kroz razmiÅ”ljanja, pozive, poticaje i odredbe biskupijskomu sveÄenstvu putem okružnica i poslanica, a vezana je uz problematiku braka i obitelji. Analizom okružnica i poslanica može se jasno iÅ”Äitati koji su prema Strossmayeru temelji uspjeÅ”noga braka i stabilne obitelji i koje su zamke tadaÅ”njega druÅ”tva kojima se pokuÅ”avaju razoriti krÅ”Äanski smisao braka i obitelji. U konaÄnici, biskup jasno stavlja na duÅ”u sveÄenicima koje sve pastoraln ākatehetskoāliturgijske korake trebaju poduzimati u zaÅ”titi braka i obitelji, a time i Crkve u cjelini. Ti biskupovi napuci i savjeti u mnogome bi mogli i trebali vrijediti i danas. Stoga tijekom proslave Godine vjere, ovaj rad želi ukazati na važnost vjere koja se ogleda u krÅ”Äanskome braku i obitelji te potrebu trajne skrbi Crkve za njegovu kvalitetu. Kao podloga tomu razmiÅ”ljanju služi Strossmayerova skrb oko toga.When we speak of Strossmayer as a benefactor, politician, orator and educator, we speak of someone or something about which many have heard or read. The laity as well as the clergy know that Strossmayer was also a bishop and exceptionaly active one. It seems that his service as a bishop, as manifested in his speeches and treatises, was systematically undervalued. Thus the primary intention of this paper is to acquaint the reader with one of Strossmayerās fields of activity as bishop through his written communication with the clergy and the faithful. The Bishopās writings are presented here as reflections, invitations, incentives and decrees to the diocesan clergy in the form of circular letters and epistles, all of which deal with the topic of marriage and the family. By analyzing these we can clearly see what, according to Strossmayer, the foundations of a successful marriage and a stable family are, and wherein lie the traps of the society of his time which were used to attempt to destroy the Christian meaning of marriage and family. In the end, the Bishop clearly states all the pastoral ā catechist ā liturgical steps that the clergy are to take in order to protect marriage and the family, and in so doing to protect the Church itself. The Bishopās guidelines and advice could and should be valid even today. Therefore, as we celebrate the Year of Faith, this paper aims to point out the importance of faith as we encounter it in Christian marriage and family and the need for the Churchās constant concern and care for its quality, and furthermore to model these after Strossmayer
Potraga za svemoguÄim dolarom: prodavaÄi u ameriÄkoj drami i filmu
This paper presents an analysis of salesmen in Arthur Miller's play Death of a Salesman (1958), David Mamet's play Glengarry Glen Ross (1984), and in the movies The Pursuit of Happyness1 (2006) and The Wolf of Wall Street (2013), all of who were competing in a cruel world of trade and commerce with the aim of achieving the American Dream. The theoretical framework of the paper firstly discusses the political circumstances in England which consequently led to the creation of the American Dream in the New World. Furthermore, it analyzes its characteristics and shows that there were various versions of the American Dream throughout the history, depending on the political situation in the country, but also depending on the opinions and attitudes of people themselves. The main part of the paper analyzes the characters of the plays and the movies by discussing their ethics, language and communication, and attitude towards business and family, referring to Jim Cullenās versions of the American Dream, in order to show that there are characters who succeeded in the rat race of the American Dream but that there are also those who got crushed under the pressure of it. In addition, the characters of the plays and the movies show a contrast when it comes to the characteristics of the American Dream because they were all written at a different time. Lastly, the paper reaches the conclusion by stating that the American Dream corroded over the years, meaning that the realization of the dream has completely changed. Nowadays, many people resort to crime and other illegal actions in order to actually achieve the dream and live a life worthy of their labor
Patogeni lista treŔnje i viŔnje u Srbiji
In recent years, sweet and sour cherry production in Serbia has increased. Under Serbian agroecological conditions, pathogens causing leaf diseases threaten the success of sweet and sour cherry production. In the period 2012-2019, the health status of cherries was monitored in more than 30 locations. Depending on the production system, the following leaf pathogens were identified: Blumeriella jaapii, Wilsonomyces carpophilus, Mycosphaerella cerasella, Phoma prunicola, Podosphaera clandestina and Pseudomonas syringae pv. syringae and morsprunorum race 1. Leaf pathogens caused premature defoliation, which adversely affected bud formation for the next growing season and increased susceptibility to freezing. Therefore, attention should be focused on correct leaf pathogen identification, and proper selection, application and rotation of fungicides.Poslednjih godina proizvodnja treÅ”nje i viÅ”nje u Srbiji je poveÄana. U naÅ”im agroekoloÅ”kim uslovima, patogeni lista ugrožavaju proizvodnju ovih perspektivnih voÄnih vrsta. U periodu 2012-2019. godine praÄeno je zdravstveno stanje treÅ”nje i viÅ”nje, na viÅ”e od 30 lokaliteta. avisno od sistema proizvodnje identifikovani su sledeÄi patogeni lista: Blumeriella jaapii, Wilsonomyces carpophilus, Mycosphaerella cerasella, Phoma prunicola, Podosphaera clandestina, Pseudomonas siringae pv. syringae i morsprunorum rasa 1. Patogeni lista izazivaju prevremenu defolijaciju, Å”to negativno utiÄe na formiranje pupoljaka za narednu vegetaciju i poveÄanu osetljivost na izmrzavanje. Stoga pažnju treba usmeriti na ispravnu identifikaciju patogena, pravilan izbor i rotaciju fungicida razliÄitog mehanizma delovanja, kao i optimalno vreme za njihovu primenu
THE CORRELATION BETWEEN CATECHISM AND HISTORY IN THE CURRICULA AND TEXTBOOKS FOR PRIMARY AND SECONDARY SCHOOLS
Mnogostruke i brze globalne promjene na raznim životnim podruÄjima utjecale su na potrebu preobrazbe suvremenih odgojno-obrazovnih sustava u svijetu. Preobrazba ima cilj uspostaviti, u najveÄoj moguÄoj mjeri, sklad izmeÄu onoga Å”to su želje i moguÄnosti, i onoga Å”to je potreba suvremenoga druÅ”tva. Za tim idu i promjene unutar hrvatskoga obrazovnog sustava koje se prezentiraju kroz Hrvatski nacionalni obrazovni standard. Standardom se želi uÄiniti hrvatski obrazovni sustav usklaÄenim s onim u Europskoj uniji, ali i prilagoditi ga sadaÅ”njim i buduÄim druÅ”tveno-kulturnim potrebama u Republici Hrvatskoj. Unutar standarda spominje se i istiÄe Å”to ÄeÅ”Äi i Å”to konkretniji korelacijski pristup u osnovnoj i srednjoj Å”koli. On se oÄituje u povezivanju dvaju ili viÅ”e predmeta i u meÄusobnom usklaÄivanju prilikom obrade odreÄene teme unutar nastavnog procesa, tamo gdje je to moguÄe i koliko je moguÄe.
UsporeÄujuÄi u ovom radu udžbenike za osnovnu i srednju Å”kolu u predmetima vjeronauk i povijest, uoÄeno je puno sliÄnih ili Äak istih tema. To otvara moguÄnosti za praktiÄno ostvarenje željene meÄupredmetne povezanosti.
Analizirani su u potpunosti udžbenici za povijest izdavaÄke kuÄe Å kolska knjiga i dijelom izdavaÄke kuÄe Profil.The complex and fast global changes in various areas of life call for alteration of the existing educational systems worldwide. The change aspires to attain the greatest possible harmony between the desired and possible aims and the requirements of the contemporary society. The alterations carried out by the Croatian educational system and presented in the Croatian National Educational Standard have risen from the same aspiration. The Standard attempts not only to harmonize the Croatian educational system with that of the European Union but also to adapt it to the present and future social and cultural requirements of the Republic of Croatia. It encourages the frequent and concrete correlational approach in both primary and secondary schools. This correlation is manifested in cross-curricular approach regarding two or more subjects along with their mutual harmonization while covering different topics within the teaching process, wherever and as much as possible. The comparison of catechism and history textbooks for primary and secondary schools has revealed many similar, even identical topics. This opens the possibility for practical application of the desired cross-curricular approach. The textbooks published by Å kolska knjiga were revised entirely and those published by Profil only partially
Internet Access on Commercial Airlines
Potreba za Internetom i moguÄnosti koje pruža postali su sastavni dio ljudskoga života. Onakav pristup Internetu, kakav imaju u vlastitim domovima, takav žele gdje god da se nalaze, pa tako i prilikom putovanja zrakoplovom. Mrežni operateri, da bi ispunili zahtjeve korisnika, doÅ”li su do naÄina kako im to omoguÄiti, a to je pomoÄu satelitskih komunikacijskih sustava te razvojem Äetvrte generacije mobilnih mreža (LTE) s airātoāground naÄinom rada. Time je omoguÄen pristup Internetu mnogobrojnim putnicima na komercijalnim letovima. U radu je opisana infrastruktura koja omoguÄava pristup Internetu u zrakoplovima i usluge koje se nude. Trenutno je zadovoljena potreba korisnika za pristupom Internetu u zrakoplovima, ali u skoroj buduÄnosti se oÄekuju novi izazovi za mrežne operatere te razvoj usluga koje nude.The need for Internet and the possibilities it offers, have become crucial part of everyday life. The kind of Internet access that people have at their own homes is the same one they want wherever they go, including travelling by airline. To fulfill their costumer needs, service providers came to a solution which is going to provide them that. With the help of satellite communication system, and development of fourth generation mobile network (LTE) airātoground system has provided Internet access to many passengers on commercial flights. This thesis explains infrastructure which provides Internet access in airlines and services which are provided. The need for Internet access in airlines is contended at the moment, but near future holds new challenges for service providers and development of their services
Istraživanje povezanosti Å”irine vokabulara i strategija uÄenja napamet u nastavi engleskog kao stranog jezika kod srednjoÅ”kolskih uÄenika
One of the biggest challenges learners will face during foreign language learning is vocabulary. Vocabulary plays a crucial part in language use and insufficient vocabulary knowledge may lead to difficulties in language learning. Therefore, learners need to be acquainted with vocabulary learning strategies to help them overcome difficulties that come with vocabulary learning.
This paper focuses on the research conducted at Valpovo High School. The aim was to explore the relationship between rote learning strategies and vocabulary breadth among high school English foreign language (EFL) learners. The results of Pearsonās correlation revealed significant correlation between vocabulary breadth test achievement and the use of rote learning strategies among the learners of Grammar School and Electrical Engineering School but no correlation with the learners of High School of Economics.
The results show that learnersā performance on the test is better when they rely less on rote learning strategies and vice versa. However, even though many factors could influence the results, the research findings show that it is of great importance to raise learnersā awareness of different language learning strategies.Jedan od najveÄih izazova s kojim Äe se uÄenici suoÄiti tijekom uÄenja stranog jezika je vokabular. Vokabular igra veliku ulogu u koriÅ”tenju jezika te nedovoljno znanje vokabulara može dovesti do poteÅ”koÄa u uÄenju jezika. Stoga se uÄenici trebaju upoznati sa strategijama uÄenja vokabulara kako bi im pomogle u prevladavanju poteÅ”koÄa povezanih s uÄenjem vokabulara.
Ovaj diplomski rad opisuje istraživanje provedeno u Srednjoj Å”koli Valpovo. Cilj je rada istražiti povezanost strategija uÄenja napamet i Å”irine vokabulara u nastavi engleskog kao stranog jezika kod srednjoÅ”kolskih uÄenika. Rezultati Pearsonove korelacije pokazuju znaÄajnu korelaciju izmeÄu rezultata na testu Å”irine vokabulara i uporabe strategija uÄenja napamet u Gimnaziji i ElektrotehniÄkoj Å”koli, ali ne i u Ekonomskoj Å”koli.
Rezultati pokazuju da je uspjeÅ”nost uÄenika na testu bolja kada se manje oslanjaju na strategije uÄenja napamet i obrnuto. Iako mnogi Äimbenici mogu utjecati na rezultate, radom se nastoji ukazati na veliku važnosti podizanja svijesti uÄenika o razliÄitim strategijama uÄenja jezika
Utjecaj duljine trajanja programa opismenjavanja na Brailleovom pismu na uÄestalost koriÅ”tenja Brailleovog pisma
A noticeable decline in braille usage, as well as in braille literacy in general, has been present in many countries since the 1980s. Although in Croatia there is no current formal data on braille literacy, organisations of blind people and professionals who work with visually impaired people confirm such decline in this country as well. Numerous studies state that there are various possible causes for such a negative trend. Use of residual vision, additional disabilities, technological development, lack of expertsā competencies, and an itinerant service model are just some of the possible reasons. The aim of this research is to establish whether the length of a braille literacy programme affects the usage of braille in the areas of educational activities, leisure time activities, daily living activities, and organisation and management activities. For the purpose of this research, conducted in 2016, an extensive questionnaire about usage of braille in those areas was created. The sample consisted of nineteen (N=19) braille-literate visually impaired high school students who were, at the time, attending public and residential schools in Croatia. The collected data were analysed using the quantitative methodology: robust discriminative analysis and univariate analysis of variance. The results show that there was a statistically significant difference among the groups of students who attended braille literacy programme fewer than 6 months, between 6 and 12 months, and over 12 months in every tested area. The best results in all areas were shown by students with the longest period of time in a braille literacy programme. Braille-literate visually impaired adolescents in Croatia use braille mostly for educational purpose (academic literacy), while functional literacy remains problematic since they rarely use braille in those activities (daily living, leisure time, organisation and management).ZnaÄajno smanjenje koriÅ”tenja Brailleovog pisma te slabljenje pismenosti na Brailleovom pismu opÄenito, zapaža se u mnogim zemljama joÅ” od 80-ih godina proÅ”log stoljeÄa. Iako u Hrvatskoj nemamo novijih službenih podataka o pismenosti na Brailleovom pismu, organizacije slijepih osoba te struÄnjaci koji s njima rade potvrÄuju takav trend i u naÅ”oj zemlji. Brojna istraživanja navode razliÄita objaÅ”njenja tog trenda: koriÅ”tenje rezidualnog vida, dodatne teÅ”koÄe, razvoj tehnologije, nedostatne kompetencije struÄnjaka te integracija uÄenika oÅ”teÄena vida u redovni sustav obrazovanja. Cilj je ovog istraživanja utvrditi utjeÄe li duljina trajanja programa opismenjavanja na Brailleovom pismu na koriÅ”tenje Brailleovog pisma u edukacijskim aktivnostima, aktivnostima slobodnog vremena, svakodnevnim aktivnostima te u aktivnostima organizacije i upravljanja. U svrhu ovog istraživanja, provedenog 2016. godine, konstruiran je opsežan upitnik o koriÅ”tenju Brailleovog pisma u navedenim podruÄjima. Uzorak se sastojao od devetnaest (N=19) srednjoÅ”kolaca oÅ”teÄena vida koji su u to vrijeme polazili srednju Å”kolu u redovnim ili posebnim uvjetima u . Svi uÄenici bili su opismenjeni na Brailleovom pismu. U obradi podataka koriÅ”tena je kvantitativna metodologija: robusna diskriminacijska analiza te univarijatna analiza varijance. Rezultati pokazuju da postoji statistiÄki znaÄajna razlika u svim testiranim podruÄjima izmeÄu grupa ispitanika koji su program opismenjavanja na Brailleovom pismu polazili manje od 6 mjeseci, izmeÄu 6 i 12 mjeseci, te viÅ”e od 12 mjeseci. Najbolje rezultate u svim podruÄjima postigli su uÄenici koji su u program bili ukljuÄeni najduže vrijeme. Brailleovo pismo najÄeÅ”Äe koriste u edukacijskim aktivnostima, a znatno rjeÄe u aktivnostima slobodnog vremena, svakodnevnim aktivnostima te u aktivnostima organizacije i upravljanja
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