Repository of the University of Rijeka, Faculty of Maritime Studies
Not a member yet
3513 research outputs found
Sort by
Transportation of dry bulk cargo by sea
No full textPrijevoz rasutog tereta morem efikasan je i jednostavan način prijevoza velikih količina
tereta. Prevozi se brodovima u brodskim skladištima i često je jedini teret na brodu zbog čega
dolazi do specijalizacije brodova, a tako i terminala koji su ključni da bi se ova vrsta prijevoza
mogla obavljati. Što više vrsta i količina brodova nastaje to su veće mogućnosti nesreća i
povećava se broj mogućih opasnosti, stoga na snagu stupaju pravila, zakoni i konvencije koje
reguliraju ovu vrstu prijevoza do zadnjeg detalja kako bi teret, brodovi, posada, a i okoliš prošli
cijeli proces prijevoza bez ikakvih nesreća.Transport of bulk cargo by sea is an efficient and simple way of transporting large
quantities of cargo. It is transported by ships in cargo holds and is often the only cargo on board,
which leads to the specialization of ships and thus terminals, which are crucial for this type of
transportation to be possible. The more types and sizes of ships are created, the greater the
possibility of accidents and the number of possible dangers increases, therefore rules, laws and
conventions are made to regulate this type of transport process without any accidents
Reverse logistics
No full textPovratna logistika je skup aktivnosti, zatvorenog lanca opskrbe, koje se provode nakon prodaje proizvoda. Proizvodi se premještaju od kupca, u suprotnom smjeru, natrag kroz dobavni lanac do prodavača ili proizvođača kako bi im se ponovno vratila vrijednost ili kako bi se pravilno zbrinuli. Iskorišteni ili potrošeni proizvodi se mogu dalje preprodati, obnoviti, popraviti, reciklirati, njihovi dijelovi se mogu iskoristiti itd. Također velika je razlika između povratne logistike i pojmova kao što su opskrbni lanac, zelena logistika i upravljanje otpadom. Logistika je samo dio opskrbnog lanca potreban kako bi se obavilo uspješno premještanje robe, zelena logistika je usmjerena isključivo na ekološki aspekt logističkih aktivnosti, dok se upravljanje otpadom odnosi na prikupljanje i preradu otpada. Izuzev troškova i izazova povratne logistike, ona donosi i određene prednosti kao što su zadovoljenje kupaca i njihova lojalnost određenom brendu te bolja konkurentska pozicija te kompanije na tržištu u odnosu na ostala poduzeća. Značajan utjecaj na povratnu logistiku imala je i e-trgovina zbog koje je broj povrata uvelike porastao.Reverse logistics refers to a set of activities, in a closed-loop supply chain, that are carried out after the product is sold. Products are moved from the customer, in the opposite direction, back through the supply chain to the seller or producer to be revalued or disposed of properly. Used or consumed products can be resold, refurbished, repaired, recycled, their parts can be used, etc. There is also a big difference between reverse logistics and concepts such as supply chain, green logistics and waste management. Logistics is only part of the supply chain needed to successfully move goods, green logistics is focused exclusively on the environmental aspect of logistics activities, while waste management refers to the collection and processing of waste. Apart from the costs and challenges of reverse logistics, it also has certain advantages such as customer satisfaction and their loyalty to a certain brand and a better competitive position of that company on the market compared to other companies. E-commerce had a significant impact on reverse logistics, which is why the number of returns increased significantly
Maintenance of automated systems on HNK Rijeka stadium
No full textKroz povijest, zajedno s napretkom tehnologije, modernizirali su se i stadioni. Svake godine na stadionima diljem svijeta možemo primijetiti sve više i više novih tehnologija. Prva prekretnica kroz povijest u unaprjeđenju stadiona bio je televizijski prijenos. Nakon televizijskog prijenosa dolazimo do ostalih segmenta poput audio i video nadzora, ozvučenja, rasvjete, potrebnih sadržaja za novinare, unaprjeđenje ponude za posjetioce (uključujući razne pogodnosti prehrambene industrije), digitalni semafori i ostale novosti. U novije vrijeme javlja se termin “Smart stadium” koji obuhvaća cjelokupni sustav stadiona sa što boljim doživljajem za posjetioce, čim lakšim upravljanjem čitavog stadiona i čim većom mogućom razinom sigurnosti. Tako danas na stadionu možemo pronaći mnoštvo senzora za razne svrhe, kontrolirane ispise upravljanja stadiona, dodatne izvore napajanja na stadionima u slučaju prekida napajanja s gradske mreže i još mnoštvo novih sofisticiranih uređaja. Stadion Rujevica hrvatskog nogometnog kluba Rijeka može se pohvaliti kako je trenutno jedan od najmodernijih i najsofisticiranijih stadiona u Republici Hrvatskoj. Glavne sustave na stadionu Rujevica možemo podijeliti na sustave za navodnjavanje, sustav za grijanje i pripremu tople vode, infrastrukturni tehnički sustav (sadrži sustave poput razglasa i cijelog audio sustava, video sustav, “sprinkler” sustav, informatički sustav). Svi ti sustavi koji su većinski automatizirani moraju sadržavati i ljudsku komponentu s toga i tehničku službu stadiona ubrajamo u jedan od njegovih bitnih dijelova.Throughtout history with advance in technology, stadiums have also been modernized. Every year on stadiums all around the world we can see more and more new technologies being applied. First step in history in stadium advancement was television transmission. After television transmission we can see progress in other segments such as audio and video support, sound systems, stadium lighting, content for journalists, improvement of the offer for visitors (including many different benefits of food industry), digital scoreboards, and many other new ameneties. In the new era of stadiums we come to a term of „Smart stadium“ which includes whole stadium system with emphasis on better experience for visitors, easier management of whole stadium and safety of people on the stadium. On todays stadiums we can find many different sensors, logs of stadium management, extra power supplies in case of power failure from cities power network and many new other sophisticated things. Stadium Rujevica of HNK Rijeka can boast to beign one of the most advanced stadium sin Croatia. Main systems of Stadium Rujevica can be divided to irrigation system, system for heating and hot water preparation, infrastructure tehnical system (including audio systems, video systems, sprinkler system, IT system). All of those, who are mostly automated, need to have the human component so technical service of the stadium i salso included in one of the most important parts of stadium Rujevica
Intelligent traffic management system
No full textInteligentni sustavi upravljanja prometom postaju ključno rješenje za efikasno
upravljanje izazovima poput zagušenja, većeg broja nesreća te čak i većeg onečišćenja
okoliša.
Ovaj rad prikazuje konceptualni okvir, arhitektonsku osnovu, povijesni razvoj te
primjenu inteligentnih sustava upravljanja prometom u različitim prometnim sektorima.
Poseban naglasak stavljen je na primjer Istarskog ipsilona kao reprezentativnog primjera
modernog prometnog sustava u Hrvatskoj. Kroz ovaj rad nastoji se ukazati na važnost
tehnološkog napretka u optimizaciji prometne infrastrukture i iskustva korisnika te
osvijestiti potrebu za informiranim planiranjem, nadzorom i upravljanjem prometom u
suvremenom društvu. Ističe se vitalna uloga koju inteligentni sustavi upravljanja
prometom igraju u poboljšanju učinkovitosti prometa, sigurnosti i cjelokupnog upravljanja
prijevozom.Intelligent traffic management systems are becoming a key solution for the efficient
management of challenges in the transport sector, such as congestion, more accidents and
even wider issues like environmental pollution.
This paper presents the conceptual framework, architectural basis, historical development and application of intelligent traffic
management systems in different traffic sectors. Special emphasis is placed on the example
of the Istrian Epsilon, as a representative example of a modern transport system in Croatia.
This study is trying to highlight the importance of technological progress in the
optimization of transport infrastructure and user experience, and to raise awareness of the
need for informed planning, monitoring and management of traffic in modern society. It
highlights the vital role that intelligent traffic management systems play in improving
traffic efficiency, safety and overall transport management
Automatic steering vehicles
No full textAutomatsko upravljanje vozilom predstavlja veliki napredak u automobilskoj industriji te ima potencijal revolucionirati način na koji putujemo. Vozila s automatskim upravljanjem često se nazivaju autonomnim vozilima. Autonomna vozila koriste kombinaciju najsuvremenijih tehnologija za navigaciju i kontrolu bez izravne ljudske intervencije. Napredni senzori i računalni sustavi kojima su opremljeni omogućuju im sigurno i učinkovito snalaženje u složenim okruženjima. Iako postoje izazovi koje treba prevladati, razvoj autonomnih automobila nastavlja napredovati, nudeći obećanje sigurnijeg, praktičnijeg i ekološki prihvatljivijeg prijevoza u budućnosti.Automatic steering vehicles represent a major advance in the automotive industry and has the potential to revolutionize the way we travel. Self-driving vehicles are often referred to as autonomous vehicles. Autonomous vehicles use a combination of technologies for navigation and control without direct human intervention. The advanced sensors and computer systems they are equipped with enable them to navigate safely and efficiently in complex environments. Although there are challenges to overcome, the development of autonomous vehicles continues to advance, offering the promise of safer, more convenient and environmentally friendly transportation in the future
Automatic traffic management systems
No full textPromet i prometna infrastruktura kao aktivni dionici gospodarskoga razvoja, imaju direktan i indirektan utjecaj na život ljudi i na okoliš. Urbanizacija, razvoj tehnologije te porast broja vozila u gradovima dovodi do zagušenja prometa i umanjuje protočnost postojeće prometne infrastrukture. Navedeno dovodi do prometnih gužvi i zastoja te posljedično do prometnih nezgoda. Također, uzrokuje povećanu potrošnju goriva i veću emisiju štetnih plinova.
U današnje se vrijeme upravljanje prometom provodi automatizirano što pospješuje protočnost prometa i sigurnost. Tehnološki napredak doprinosi razvoju prometnog sustava posebno kroz upotrebu integriranih sustava upravljanja prometom. U radu se opisuje i analizira arhitektura sustava za automatsko upravljanje prometom, integriranost s različitim prometnim sustavima, tehnologija i tehnološka rješenja. Na primjeru Grada Rijeke daje se prikaz sustava za automatsko upravljanje prometom.Traffic and traffic infrastructure as active participants of urbanistic development, have direct and indirect impact on people’s lives and the environment. Urbanization, development of technology and the increase in the number of vehicles in cities has led to traffic congestion and reduced the flow of the existing traffic infrastructure. This, in turn, leads to fuel consumption and emissions of harmful gases.
Today, traffic management is carried out in automatically, which has resulted in improved traffic flow and traffic security. Progress in technology contributes to the development and improvement of traffic system.
The purpose of this paper is to describes and analyses the architecture and the integrity of automatic traffic management with different traffic systems and technologies. A case example of the City of Rijeka is presented to showcase the system of automatic traffic management
Legal regulation performing transportation in line coastal sea traffic
No full textKoncesijski model je pravna struktura koja omogućuje privatnim poduzećima, brodarskim tvrtkama i investitorima upotrebu javnih resursa poput luka, pristaništa i morskih ruta kako bi pružili ključne usluge javnog prijevoza za putnike i teret. Ovaj kompleksni sustav ugovora oblikuje dinamiku cijelog sektora linijskog obalnog pomorskog prijevoza, postavljajući uvjete za pružanje usluga, tehničke specifikacije brodova, sigurnosne i ekološke zahtjeve te druge ključne aspekte poslovanja. Koncesije za obavljanje javnog prijevoza u linijskom obalnom pomorskom prometu igraju ključnu ulogu u održavanju povezanosti između obale i otoka u Hrvatskoj. Primjer Jadrolinije, nacionalne brodarske kompanije, ilustrira kako ovaj sustav može biti presudan za razvoj, održivost i kvalitetu pomorskog prometa u zemlji.
Istaknuto je da je transparentnost ključna komponenta procesa dodjele koncesija Jadroliniji. Procesi dodjele koncesija u Hrvatskoj osiguravaju jednakost šansi za sve potencijalne koncesionare, potičući konkurenciju i osiguravajući fer postupak koji uživa povjerenje javnosti. Također se naglašava da koncesionari poput Jadrolinije imaju značajnu ulogu u povezivanju otoka s obalom i unapređenju turizma, što je ključno s obzirom na Hrvatsku kao turističku destinaciju. Linijski obalni pomorski prijevoz omogućava mnogim posjetiteljima istraživanje različitih dijelova obale i otoka te doprinosi ekonomskom razvoju zemlje kroz visoku kvalitetu usluge i povećani turistički promet.
Budućnost dodjele koncesija u ovom sektoru obuhvaća modernizaciju, ekološku održivost, inovacije i digitalizaciju. Upotreba modernih i ekološki osvještenih brodova smanjuje negativni utjecaj na okoliš i pruža ugodno iskustvo putnicima. Digitalne tehnologije omogućuju bolje upravljanje operacijama i unaprijeđeno korisničko iskustvo. Nadalje, suradnja s lokalnom zajednicom i vlastima postaje ključna komponenta budućih procesa dodjele koncesija. Povezanost između obalnih gradova i otoka ima dubok društveni i ekonomski utjecaj na lokalno stanovništvo.The concession model is a legal structure that allows private companies, shipping companies and investors to use public resources such as ports, wharves and sea routes to provide essential public transport services for passengers and cargo. This complex system of contracts shapes the dynamics of the entire liner coastal shipping sector, setting conditions for service provision, ship technical specifications, safety and environmental requirements and other key aspects of business. Concessions for the performance of public transport in line coastal maritime transport play a key role in maintaining the connection between the coast and the islands in Croatia. The example of Jadrolinija, the national shipping company, illustrates how this system can be crucial for the development, sustainability and quality of maritime transport in the country.
It was pointed out that transparency is a key component of the process of awarding concessions to Jadrolinija. Concession award processes in Croatia ensure equality of opportunity for all potential concessionaires, encouraging competition and ensuring a fair process that enjoys public trust. It is also emphasized that concessionaires such as Jadrolinija play a significant role in connecting the island with the coast and improving tourism, which is crucial considering Croatia as a tourist destination. Line coastal maritime transport enables many visitors to explore different parts of the coast and islands and contributes to the economic development of the country through high quality service and increased tourist traffic.
The future of concessions in this sector includes modernization, environmental sustainability, innovation and digitization. The use of modern and environmentally conscious ships reduces the negative impact on the environment and provides a pleasant experience for passengers. Digital technologies enable better management of operations and improved user experience. Furthermore, cooperation with the local community and authorities is becoming a key component of future concession awarding processes. The connectivity between coastal cities and islands has a profound social and economic impact on the local population
Human factor and prevention of accidents at sea
No full textPomorske operacije su složeni procesi koji zahtijevaju vješte pojedince za navigaciju,
upravljanje strojevima, te donošenje kritičnih odluka u nepredvidivim izazovima i
situacijama. Ključ u održavanju sigurnosti i sprečavanju nesreća je razumijevanje utjecaja
ljudskog ponašanja i sposobnosti donošenja odluka. Istraživanjem opasnosti s kojima se
pomorci suočavaju, uključujući umor, veliko radno opterećenje, nepovoljni vremenski uvjete
i tehnički kvarovi istražuju značaj ljudskog faktora u nastanku i prevenciji nesreća na moru.
Studije slučaja i primjeri iz stvarnog života pokazali su ključnu ulogu koju ljudski postupci i
ponašanja igraju u sprječavanju katastrofa. Brz odgovor, učinkovito donošenje odluka i vješto
manevriranje su ključni u sprječavanju sudara, obuzdavanju požara i smanjenju utjecaja
nesreća. Kako bi se dodatno poboljšala prevencija nesreća na moru, stalni napori moraju se
usredotočiti na kontinuirane programe obuke, procjene sposobnosti i uzgoj organizacijske
kulture koja je svjesna sigurnosti. Ulaganja u dobrobit posade, napredne metodologije obuke i
sustave upravljanja sigurnošću ključni su za održavanje kulture sigurnosti i prevencije
nesreća.Maritime operations are complex processes that require skilled individuals to
navigate, operate machinery, and make critical decisions in unpredictable challenges and
situations. The key to maintaining safety and preventing accidents is understanding the
impact of human behavior and decision-making ability. By investigating the dangers seafarers
face, including fatigue, heavy workload, adverse weather conditions and technical failures,
they investigate the importance of the human factor in the occurrence and prevention of
accidents at sea. Case studies and real-life examples have shown the key role that human
actions and behaviors play in disaster prevention. Quick response, effective decision-making
and skillful maneuvering are key in preventing collisions, containing fires and reducing the
impact of accidents. To further improve the prevention of marine accidents, ongoing efforts
must focus on continuous training programs, competency assessments and cultivating a
safety-conscious organizational culture. Investments in crew welfare, advanced training
methodologies and safety management systems are key to maintaining a culture of safety and
accident prevention
Application of Multicriteria Analysis in the Selection of the LNG Terminal Location
No full textPositioning of large energy facilities is, as a rule, accompanied by a strong rejection of local and regional communities, without which it is not possible to determine the location and construction conditions for the facility in spatial plans. However, a synergy of three components may enable a successful project realization. Firstly, the application of verified and objective scientific methods for the selection of the most appropriate LNG terminal location. Secondly, the consideration of the best world practices in project documentation preparation for such terminal construction. And lastly, the continuous involvement of the local community into the entire process. The paper presents an approach aimed at solving the problem of choice by applying the methodology of choosing the “best compromise location” based on system characteristics, available data, set criteria, and limitations. The key “dimension” of such a problem is “space”, i.e. the spatial aspects of location selection. The paper provides an overview of the activities, procedures, and methods used to define the optimal location of the receiving LNG terminal in the Republic of Croatia as part of the analysis and research carried out by EKONERG and in the function of creating the Spatial Plan of Primorje-Gorski Kotar County. Accordingly, the main objective of this paper was to highlight the specifics of LNG terminal site selection as well as the possibility of objectively defining the optimal location using the multi-criteria decision-making method that simultaneously takes into account all influential factors and criteria in defining it. The paper uses the methodology of multi-attribute decision process and multicriteria analysis of the selection of the optimal location of the LNG terminal on the territory of Primorje-Gorski Kotar County. It systematically and scientifically analyses, consistently formulates, and proposes elimination and comparative criteria necessary to determine the optimal location of the LNG terminal for the purpose of drafting regional level spatial planning documents. The presented methodology was carried out using the process of multicriteria ranking of variants. The method of weighted sum values was used. Weighting factors are determined partly in an exact way (where possible) and partly based on the application of Delphi group decision-making methods. The methodology was tested on a concrete example of variant analysis for the location of LNG terminals in the Republic of Croatia. By implementing the presented methodology, the location of the northern part of the island of Krk was determined as optimal for the location of the LNG terminal. The aforementioned was implemented in the Spatial Plan of Primorje-Gorski Kotar County, and the first phase of the receiving LNG terminal was built and put into full operation
Fostering Sustainable LNG Bunkering Operations: Development of Regulatory Framework
No full textLiquefied natural gas (LNG) is a liquid form of natural gas, predominantly composed of methane, that has emerged as a promising alternative to traditional hydrocarbon fuels in the maritime transportation sector due to its lower greenhouse gas (GHG) emissions. As the world shifts towards renewable energy sources, LNG is increasingly recognized as a bridge fuel that can help mitigate global warming. However, the production and use of LNG can result in methane emissions, which have a higher global warming potential than carbon dioxide. To address this issue, competent authorities aim to develop regulatory frameworks to reduce the potential environmental impact of LNG and promote its use as a cleaner fuel in the maritime sector. We used a systematic approach to selecting and synthesizing the sources relevant to the LNG bunkering process to provide an overview of the current state of regulations, standards, guidance, and trends in LNG bunkering to minimize the potential adverse environmental impacts