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    3513 research outputs found

    Harvesting RF energy from shipborne automatic identification system

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    Radiovalovi, spektar elektromagnetskih valova, su svuda oko nas te u većini slučajeva imaju samo jednu ulogu. Sustav automatske identifikacije brodova (engl. Automatic identification system - AIS) se koristi radiovalovima u svrhu učestale komunikacije koja izmjenjuje podatke između brodova i obalnih stanica. Učestalo odašiljanje znači da dolazi do intervalnog emitiranja elektromagnetskih valova. U ovom radu je cilj dodavanje elektromagnetskim valovima AIS sustava novu funkciju – izvor napajanja. Prikupljanjem elektromagnetskih valova frekvencije AIS sustava nastoji se isti signal ispraviti u istosmjerni napon, pojačati naponsku razinu, te dalje prenijeti na izlaz ispravljača. U radu je proces prikupljanja energije radiovalova izveden simulacijski u programskom alatu Multisim.Radio wave energy, spectrum of electromagnetic waves, is often used with only one purpose. Shipborne automatic identification system uses electromagnetic waves for communicating between other ships and onshore stations. Communication happens very often, and because of that, adding another purpose to electromagnetic waves of AIS system is logical. Using electromagnetic waves as power source after harvesting them is goal in this paper. Challenges for harvesting RF energy from AIS systems are rectifying low voltage, multiplying the same low DC voltage into much higher DC voltage which can be used in further applications. Whole process is done in simulation software Multisim

    Transportation of dangerous goods

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    Završni rad bavi se obradom informacija o prijevozu opasnih tereta u određenim granama prometa. Opasni teret predstavlja rizik za sve sudionike prilikom prijevoza, ali i rukovanja takvim teretom jer određena svojstva opasnih tvari mogu izazvati eksplozije, zagađenja, narušiti zdravlje ljudi i uzrokovati štetu na materijalnim stvarima. Prilikom bilo kakvih operacija s opasnim tvarima potrebno se pridržavati zakona i drugih propisa jer sadrže mjere, obveze sudionika i upute kako postupati s njima.The final paper pertains to the processing of information on the transportation of dangerous goods in different transportation modes. The aforementioned present a plethora of risks for all participants in traffic during the transportation process, coequally the above mentioned may pose a threat to those handling the goods because certain properties of theirs can cause explosions, pollution, harm people's health and cause damage to property. During any undertakings having to do with dangerous goods, it is necessary to comply with the law and other regulations as they contain measures, legislations and instructions on how to deal with them

    Impact of containerization on maritime traffic

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    Kontejnerizacija je transformirala lučki sektor iz jedne generacije u drugu i razvila međunarodnu trgovinu između regija. Pomorski promet igra važnu ulogu u svjetskoj trgovini, čineći više od 80% količine robe kojom se trguje između zemalja i više od 70% ukupne vrijednosti trgovine. U smislu težine, glavni proizvodi koji se prevoze morem su robe u rasutom stanju, koje obično imaju relativno niske jedinične vrijednosti težine, kao što su željezna rudača, ugljen, sirova nafta i žitarice. Kontejnerski teret veće vrijednosti, iako čini oko 16% ukupne tonaže, procjenjuje se da čini oko 60% ukupne vrijednosti pomorske trgovine ili više od 8 trilijuna USD u 2018. Kontejnerski prijevoz robe između Kine i Europe, odnosno između Kine i Češke, važan je dio trgovine između ovih zemalja a volumen mu se i dalje povećava. Ovaj rad sadrži analizu trenutnog stanja dva vida prometa i to pomorski i željeznički promet između Dalekog istoka i Europe, odnosno između dalekog istoka i Češke. Oba ova načina prijevoza su ekološki prihvatljivi i trebali bi se koristiti za prijevoz robe u budućnosti. Jedan dio ovog rada sadrži usporedbu odabranih aspekata. Odabrani aspekti su cijene, vrijeme prijevoza i sigurnost. Usporedba dvaju načina prijevoza, pomorskog i željezničkog prijevoza je razumna, jer cijene, vrijeme prijevoza i sigurnost važni su za odluku koji način prijevoza koristiti.Containerization has transformed the port sector from one generation to another and developed international trade between regions. Maritime transport plays an important role in world trade, accounting for more than 80% of the volume of goods traded between countries and more than 70% of the total value of trade. In terms of weight, the main products transported by sea are bulk goods, which usually have relatively low unit weight values, such as iron ore, coal, crude oil and grains. Higher value containerized cargo, although it accounts for about 16% of the total tonnage, is estimated to account for about 60% of the total value of maritime trade or more than 8 trillion USD in 2018. Containerized freight between China and Europe, or between China and the Czech Republic, is an important part trade between these countries and its volume continues to increase. This paper contains an analysis of the current state of two types of traffic, namely maritime and rail traffic between the Far East and Europe, that is, between the Far East and the Czech Republic. Both of these modes of transportation are environmentally friendly and should be used for transporting goods in the future. One part of this paper contains a comparison of selected aspects. The selected aspects are prices, transport time and safety. Comparing the two modes of transport, sea and rail transport, is reasonable, as prices, transport time and safety are important in deciding which mode of transport to use

    Planning and acquiring human resources

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    U ovom diplomskom radu obrađena je jedna od temeljnih funkcija suvremenog menadžmenta, odnosno menadžment ljudskih potencijala te s njim povezane funkcije. Poseban naglasak stavljen je na dvije najbitnije funkcije menadžmenta ljudskih potencijala, a to su planiranje i pribavljanje ljudskih potencijala. Menadžment ljudskih potencijala sadrži širok spektar funkcija i aktivnosti u čijem središtu je najbitniji resurs, a to je upravo čovjek. Glavni smisao upravljanja je postizanje rezultata, a u upravljanju ljudskim potencijalima, postizanje rezultata ostvaruje se pomoću ljudi. Funkcijama analize posla, planiranjem i pribavljanjem ljudskih potencijala, organizacija se razvija i opskrbljuje kvalitetnim zaposlenicima, koji uvelike doprinose poslovanju, a koje je potrebno sustavno pratiti, poticati, motivirati i nagrađivati, kako bi se održala kvalitetna radna atmosfera i ostvarivali poslovni ciljevi organizacije, što će vjerno predočiti primjer tvrtke za posredovanje pri zapošljavanju pomoraca, koji je korišten u radu.This master’s thesis describes one of the main functions of modern management, which is human resource management and the functions related to it. Special emphasis is placed on the two most important functions of human resource management, which is planning and acquiring human resources. Human resource management includes a wide range of functions and activities at the center of which is the most important resource, of course man. The main meaning of management is to achieve results, and in human resource management, achieving results is only possible with the help of people. With the functions of job analysis, planning and acquisition of human resource management, the organization is developed and supplied with quality employees, who greatly contributes to the business, and who need to be systematically monitored, encouraged, motivated and rewarded, in order to maintain a quality working atmosphere and achieve the organization’s business goals, which will be represented in this paper in a form of an example of a seafarer recruitment agency

    Tourism and sustainable development in coastal areas

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    Turizam je danas jedna od najrazvijenijih gospodarskih djelatnosti koja donosi ogromne državne profite, pogotovo u primorskim državama, odnosno obalnim područjima. Ali turizam donosi i svoje negativne posljedice na obalni okoliš koji nikako nije zanemariv te postoji ozbiljna prijetnja degradacije obalnih područja ako se ne poduzmu pravilne mjere turizma. Zato je potrebno usavršavanje primjenjivanja održivog turizma kako bi turistički prihodi bili dugoročni, a da obalna područja nemaju velik utjecaj turizma na njihov okoliš. U ovom radu su predstavljeni utjecaji turizma na okolinu i održivi razvoj turizma kao analiza i rješenje problema turizma, sve u cilju da se predstavi rješenje za očuvanje obalnog područja i pravilnog turističkog razvijanja istog.Today, tourism is one of the most developed economic activities that brings huge state profits, especially in coastal states, ie coastal areas. But tourism also has its negative consequences for the coastal environment, which is by no means negligible, and there is a serious threat of degradation to coastal areas if proper tourism measures are not taken. Therefore, it is necessary to improve the application of sustainable tourism in order for tourism revenues to be long-term, without coastal areas not having a large impact of tourism on their environment. This paper presents the impacts of tourism on the environment and sustainable development of tourism as an analysis and solution to the problem of tourism, all in order to present a solution for the preservation of the coastal area and its proper tourism development

    Container ships

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    Od pojave kontejnerizacije i početaka prijevoza kontejnera morem davne 1956. brodovi za prijevoz kontejnera su se razvijali su skladu s potrebama tržišta. Glavni fokus ovog rada su brodovi za prijevoz kontejnera, kojim sve brodovima možemo prevoziti kontejnere, generacijski razvoj potpuno kontejnerskih brodova, njihove konstrukcijske značajke, te suvremene brodove koji su svojom veličinom 1956. bili nezamislivi pojam. Na kraju rada govori se o kontejnerskom brodarstvu te o najvećim brodarima, lukama i brodovima.From the start of containerization and the beginnings of container transport by sea back in the 1956., container ships have evolved in line with market needs. The main focus of this paper are container ships, by which types we can transprt containers, the generational development of full container ships, their construction features, a modern ships whose size in 1956. was an unthinkable concept. At the end of the paper it is talked about container shipping and the largest shipowners, ports and ships

    Team work at mooring the vessel

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    U ovom radu opisan je jedan od najčešćih pomorskih zadataka - privez broda. Osim općenitih, činjeničnih znanja o privezu, spomenuti su i sustavi priveza broda. U činu priveza sudjeluje veći broj članova posade i važno je da su oni, kao i čitava posada, kompetentni sudionici kvalitetnog timskog rada. Tim, za uspješno funkcioniranje i ostvarivanje ciljeva zahtjeva svijest o međuovisnosti članova, te spoznaje o specifičnim ulogama svakog pojedinca. Te su uloge propisane hijerarhijskom brodskom organizacijom čija je struktura detaljnije objašnjena u radu. Uloge i njima dodijeljene zadaće i ovlasti važno je poštivati ne samo tijekom priveza broda, već tijekom cijele plovidbe kako bi se izbjegle pomorske nesreće. Analizira jedne pomorske nesreće opisane u radu dokaz je da privez broda može biti iznimno opasna situacija u pomorstvu. Brodske nesreće mogu prouzrokovati ljudski faktori, ali i drugi faktori te je jako važno kontinuirano pratiti potencijalne opasnosti i rizike.This paper describes one of the most common maritime tasks - mooring a ship and ship mooring systems. All the crew members that participate in the act of mooring should partake in quality teamwork. That is also expected from the entire crew. For a team to function successfully and achieve its goals, awareness of the members' interdependence and knowledge of the specific roles of each individual are required. These roles are defined by the hierarchical ship organization, which is explained in more detail in the paper. Respect for the roles, tasks, and powers assigned is required, not only during the mooring of the ship but during the entire navigation for it helps avoid accidents. Analyzing one maritime accident it's proven that the mooring of a ship can be extremely dangerous. Ship accidents can be caused by human factors, and by other factors. Therefore potential risks and dangers should be monitored

    Wireless measurement systems

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    U završnom radu obradit će se tema „Bežični mjerni sustavi“. Cilj ovog rada je upoznavanje sa strukturom te tehnologijama koje se upotrebljavaju u mjernim sustavima. Upoznati ćemo načine na koji se prikupljaju mjerni podaci zajedno sa standardima i metodama koje se primjenjuju za slanje podataka. Također, navedene su prednosti i mane određenih metoda slanja podataka te su međusobno uspoređene. Dodatno su pojašnjeni Bluetooth i Infracrveni prijenos podataka kao tehnologija koje se koristi u današnjici. Na samom kraju završnog rada su prikazani mjerni instrumenti koji koriste bežični prijenos podataka.In this final work „Wireless measurement systems“ will be covered. The main goal of this work is to explain the structure and technologies used is measurement systems. We will learn how measurement data is collected along with the standards and methods used to send data. Also, the pros and cons of certain methods of sending data are listed and compared with each other. Bluetooth and Infrared data transfer as a technology used today are furthermore explained. At the very end of the final work, measurement instruments using wireless data transfer are shown

    Cruise ships with a focus on development of cruising tourism in Primorsko-goranska county

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    Kao jedan od najpopularnijih vrsta turizma, razvio se kruzing turizam koji predstavlja odmor i razonodu na brodu za kružno putovanje koji je glavni nositelj kruzinga. Brodovi za kružna putovanja najluksuznija su plovila svoje klase. Porastom potražnje kruzinga u svijetu, porasla je potražnja i u Hrvatskoj i njenim županijama poput Primorsko-goranske županije te ono postaje jedan novi i poželjan oblik turizma na ovim prostorima. Ovim radom opisat će se povijesni razvoj brodova za kružna putovanja, njihove karakteristike i podjela te će se opisati i analizirati kruzing turizam i mogućnosti njegovog razvoja u budućnosti na prostoru Hrvatske s posebnim osvrtom na Primorsko-goransku županiju.Cruise tourism, which represents rest and leisure on a cruise ship, has developed as one of the most popular types of tourism. Cruise ships are the most luxurious vessels. With the increased demand for cruising in the world, the demand has increased in Croatia and its counties, such as Primorje-Gorski Kotar County, and it is becoming a new and desirable form od tourism in this area. This thesis will describe the historical development od cruise ships, their characteristics and classification. It will describe and analyze cruising tourism and the possibilities of its future development in Croatia with special review of the Primorje-Gorski Kotar County

    The technology of bconstructing the seat of a composite vessel powered by solar energy

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    Završni rad sastoji se od četiri dijela. Prvi dio opisuje motivaciju za izradu sjedala i rada, tj. Monaco Solar & Energy Boat Challenge, važnosti natjecanja kao i sama tehnička pravila, te tijek natjecanja U drugom dijelu rada obrađena je tema kompozitnih materijala, tj. od čega se sastoje, koja je njihova uporaba te koje su njihove prednosti i mane. Treći dio završnog rada bavi se vakuumskim tehnikama izgradnje kompozitnih konstrukcija te se detaljno opisuju sami sustavi, njihovi dijelovi i oprema. Četvrti dio sastoji se od opisivanja glavnih značajki plovila, konstruiranja sjedala te se detaljno se opisuje izgradnja sjedala: odabir tehnike izgradnje, odabir materijala, izrada kalupa, priprema kalupa i izvođenje gradnje te završna obrada sjedala.This undergraduate thesis consists of four parts. First part describes the motivation behind the buliding of the seat and writing of the thesis, i.e Monaco Solar & Energy Boat Challenge, and the importance of the competition, as well as the technical regulations and the course of the competition. Second part of the thesis covers the topic of composite materials i.e. what they are made of, what is their use and what are their advantages and disadvantages. Third part of the thesis deals with vacuum techniques of building composite constructions and describes in detail the systems, their parts and equipment needed. Last part will show the main features of the vessel, construction of the seat and it describes in detail building process of the seat: choosing the technique, choice of material, making of the mould, preparing the mould, building and finishing of the seat

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