Nase More最新文献

{"title":"Application of Multicriteria Analysis in the Selection of the LNG Terminal Location","authors":"Ljudevit Krpan, Ivan Cvitković, Tanja Poletan Jugović, Ines Kolanović","doi":"10.17818/nm/2023/4.3","DOIUrl":"https://doi.org/10.17818/nm/2023/4.3","url":null,"abstract":"Positioning 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.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135850262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green Perspective of General Container Service vs. Dedicated Container Service from Asia to Northern Adriatic","authors":"Marko Golnar, Bojan Beškovnik","doi":"10.17818/nm/2023/4.2","DOIUrl":"https://doi.org/10.17818/nm/2023/4.2","url":null,"abstract":"Intermodal transport is often touted as an environmentally sustainable mode of transport, especially when considering its share of the total supply chain. This article addresses the topical and sensitive issue of supply chain assessment in terms of the carbon footprint and energy efficiency of external transportation from the point of production to the customer. The long transportation distances overseas and the variety of operational sea container services result in significant variations in delivery times from Asian markets. In addition, disruptive events such as the Covid-19 pandemic and the Ukraine conflict have led to longer transportation times and lower reliability of various maritime services. The study examines the variety of existing direct container services from Asia to the Northern Adriatic. In addition to the two direct container services already established, another dedicated container service has been established primarily to serve a large retail chain in the European market. The “newly established” container service is characterised by its limited port coverage and the use of relatively small container ships with a maximum capacity of 5.500 TEU. The comparisons between the services highlight the differences in transport time and greenhouse gas (GHG) emissions, as well as the energy efficiency of container transport. The study empirically confirms the widespread assumption that larger and modern container ships offer environmental benefits, provided that cargo space is used efficiently and ship operators adopt slow steaming. However, the study also highlights the significant differences in GHG emissions between different services and emphasises the need for more comprehensive information and awareness among cargo owners to design sustainable supply chains.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135850265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Research on the Influence of Interceptor Flaps on the Planing Hydrodynamic Performance","authors":"Samuel Samuel, Serliana Yulianti, Parlindungan Manik, Andi Trimulyono, Ahmad Firdhaus, Tuswan Tuswan, Dian Purnama Sari","doi":"10.17818/nm/2023/4.4","DOIUrl":"https://doi.org/10.17818/nm/2023/4.4","url":null,"abstract":"The trim tab and interceptor have been utilized to optimize the running trim and motion control of planing boats at varying speeds in calm water. Increasing the height of the interceptor can create excessive drag and bow-down trim. The effectiveness of the interceptor can be increased by integrating it with a horizontal flap. This research focuses on the impact of the influence caused by interceptor flaps on the pressure distribution and fluid flows around the vessel. To simulate trim and sinkage measurement, the environment was modeled in the two-degree of freedom condition. Variation of integrated interceptor flaps has been analyzed with Finite Volume Method (FVM) based on RANS (Reynolds-Averaged Navier-Stokes) equation using overset mesh. The turbulent K- ε and VOF (Volume of Fluid) models are used to model the water and air phases. The grid convergence study is performed to establish the parallel solver’s grid independence. To confirm the accuracy of the test in the bare hull condition, the numerical approach was tested experimentally. The result of drag, trim, and sinkage was calculated and it has been proved that the added flaps into interceptors are very useful in drag reduction and trim control. The percentage of interceptor height is directly proportional to the resulting lift force. Higher lift force can more effectively improve trim and reduce drag. Overall, this study shows an improvement in ship performance when using an interceptor and interceptor flap. One of the model configurations in the study has been shown to reduce drag by up to 33.3% at Froude number 1.45 when compared to ships without an interceptor.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135850269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Experimental Investigation into the Effect of Bilge Keel Position on Landing Craft Utility Vessels","authors":"Sumarsono Sumarsono, Beny Cahyono, Erwandi Erwandi, Achmad Baidowi, Baharuddin Ali","doi":"10.17818/nm/2023/4.1","DOIUrl":"https://doi.org/10.17818/nm/2023/4.1","url":null,"abstract":"The issue of energy efficiency in using fossil fuels and reducing the effects of greenhouse gas emissions is an urgent problem. So fuel-saving measures, including in the marine transportation sector, are needed, even if only by a small percentage. Landing Craft Utility (LCU) is a type of sea transport for defense matters that requires the addition of a rolling motion stabilizer for the safety and comfort of the ship, cargo, and passengers. The use of roll-damping devices can affect the increase in the resistance value of the ship and cause an increase in fuel consumption. The bilge keel is a roll-damping device that is suitable for LCU vessels. The experimental study roll decay tests and resistance tests were carried out to determine the effect of the bilge keel placement on roll damping and additional ship resistance. The flow around the vessel’s surface was observed with a paint smear test to determine the placement position. The bilge keel installed in the transitional position between the bottom and side hull has the highest total roll damping coefficient, up to 28.57%, compared to the bare hull condition. However, this placement has increased the average resistance up to 8.84%. Alternately, placement close to the draft line has a fairly good roll-damping coefficient of up to 21.27%, increasing the resistance to only 3.66%.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135850122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Analysis of the Deficiencies Resulting from Paris MoU PSC Inspections","authors":"Tonći Biočić, Vlado Frančić, Nermin Hasanspahić, Lovro Maglić","doi":"10.17818/nm/2023/4.5","DOIUrl":"https://doi.org/10.17818/nm/2023/4.5","url":null,"abstract":"Substandard ships pose a significant threat to human life and the environment. Therefore, detecting deficiencies and removing such vessels from service is necessary, which is one of the port state control (PSC) inspection tasks. In addition, the role of PSC inspection is to improve safety at sea and in ports. To be up to the task, the States jointly created several memoranda to fight against substandard ships. The most frequent deficiencies detected on ships during Paris Memorandum of Understanding (MoU) PSC inspections are analyzed in this paper. The analysis was made according to factors such as type of vessel, flag and the category to which deficiency belongs. Results revealed that most frequent deficiencies detected on ships, regardless of type or flag, come from International Safety Management (ISM) and fire protection. Furthermore, it is found that among the ten most frequent deficiencies, three are from the navigation safety category. Therefore, corrective actions to improve safety at sea are needed and presented.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135850251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Estimation of Material and Support Properties for Flexible Dolphin Structures","authors":"M. Batista, A. Grm","doi":"10.17818/NM/2017/2.2","DOIUrl":"https://doi.org/10.17818/NM/2017/2.2","url":null,"abstract":"Present work describes the inverse problem for identification of material and support type properties of flexible dolphin structure. Most liquid bulk terminals are equipped with a jetty as berthing facility. The ship mostly berths to dedicated breasting dolphin structures, which can be single-pile flexible/rigid dolphins or multi-pile flexible/rigid dolphins. This work considers dolphin motion as massspring damped system where cantilever approximation mimics dolphin pile. Few measurements have been made for the dolphin structure, which is approximately 30 m long, 15 m immersed in the bottom and placed about 2-3 m above the sea level. The elastic material properties and pile support were identified via inverse method combined with displacement measurements of dolphin head.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49123289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Cruise Tourism on Croatian Rivers","authors":"M. Kovačić, A. Zekić, A. Violic","doi":"10.17818/NM/2017/1.11","DOIUrl":"https://doi.org/10.17818/NM/2017/1.11","url":null,"abstract":"Cruise trips have been rising in popularity since the 1970 sand are currently a trend in the tourism market. This is particularly true of river cruises, which record a constant growth in the number of ship calls. The general upward trend in the number of river cruise passengers and dockings is also present in Croatia. Prerequisites for the development of cruising on Croatian rivers include, in addition to other geographical features, also the length of navigable water ways, but a systematic approach to this issue is needed for further development. The authors investigate the level of development of infrastructure on Croatian rivers and analyze the passenger and ship traffic on them. Special attention is given to the importance of cruises for tourism on European rivers and world wide. In accordance with the Croatian Tourism Development Strategy until 2020, the authors explore geographical and other conditions necessary for the development of river cruise tourism. The aim of the paper is to point to the importance of building infrastructure for accommodation of vessels sailing on Croatian rivers, and in particular to the need to improve tourism offer in river destinations.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67440756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Motivation for Visiting Recreational Sports Event “Wild League” in Water Polo","authors":"J. Sindik, Martina Gjurašić","doi":"10.17818/NM/2017/1.9","DOIUrl":"https://doi.org/10.17818/NM/2017/1.9","url":null,"abstract":"The “Wild League” is a recreational sports event, which takes place in Dubrovnik and has an extremely long tradition. The sport that is played in this competition is water polo. A study was conducted in order to identify motivational factors related to this amateur sport. The study had two main goals: to determine basic psychometric properties (construct validity and reliability) of the adjusted Questionnaire on sports events (QSE), as well as to determine the differences in motivational factors, according to several independent variables. A sample of 125 participants were examined in this study, using the QSE. All participants were Croatian citizens, and the study did not include those who are born (and currently live) in Dubrovnik. The results revealed three-component principal components’ structure, with reliable principal components that represent pushing motives, pulling motives and the limitations. Moreover, previous visiting Dubrovnik and the level of education did not appear as important independent variables to differentiate any sport tourists’ motives. Pushing motives are highly emphasized in males, participants who were actively engaged in sports, or those with Dubrovnik’s heritage. This clearly define some profile of tourist who may be attracted to visit the destination, motivated with “Wild League” event.","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67440483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling the Qualitative Relationship among Risks Associated with Occupational and Workplace Hazards in Seaport Environments: the Case of Apapa Port, Nigeria","authors":"C. NwokediTheophilus, L. Okoroji, C. Ikeogu","doi":"10.17818/NM/2017/2.4","DOIUrl":"https://doi.org/10.17818/NM/2017/2.4","url":null,"abstract":"","PeriodicalId":45326,"journal":{"name":"Nase More","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67440540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}