发布求助
文献互助 智能选刊 最新文献

Journal of Maritime & Transportation Science最新文献

筛选
英文 中文
Projection of the Electronic Toll Collection System in the Republic of Croatia 克罗地亚共和国电子收费系统的规划
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.07
Marko Vidmar, Marino Žagar, Mile Perić
{"title":"Projection of the Electronic Toll Collection System in the Republic of Croatia","authors":"Marko Vidmar, Marino Žagar, Mile Perić","doi":"10.18048/2020.59.07","DOIUrl":"https://doi.org/10.18048/2020.59.07","url":null,"abstract":"This paper deals with the topic of a modern electronic toll collection system that will be applied in the Republic of Croatia from the year 2022 onwards. The paper primarily analyses the existing toll collection systems in Croatia, as well as in the European Union. Modern electronic toll collection systems were analysed with an emphasis on the ANPR (Automatic Number Plate Recognition) system, because ANPR technology will be used in Croatia after the restructuring of road traffic occurs. ANPR is not a new technology, however in the last twenty years it has found its wider application. This happened mostly thanks to local and global infrastructural development and technological improvements therefore in turn infrastructure required for the operation of this system became cheaper. By applying the ETC and ANPR, Croatia will have a system in line with European directives and practices which are being applied in other European countries. The system will in turn significantly raise the quality of road traffic in Croatia and reduce its costs.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"281 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116222981","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}
引用次数: 0
Maritime Challenges in Crisis Times 危机时期的海事挑战
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.03
R. Agbaba
{"title":"Maritime Challenges in Crisis Times","authors":"R. Agbaba","doi":"10.18048/2020.59.03","DOIUrl":"https://doi.org/10.18048/2020.59.03","url":null,"abstract":"The world today is extremely well connected and heavily dependent on maritime trade. The shipping market is the result of global production and as such is subject to cyclical changes, incidents and expansions. As part of such a market, maritime transport is vulnerable to external factors, such as international trade, political situations, financial trends, technological developments and legislation, which may directly or indirectly affect demand in the sector or similar. The negative effects of these changes are reflected in lower freight rates, lower daily rental prices and reduced prices of new or used boats. Maritime crisis have significantly affected income, wages, number of employees and similar. In this regard, the crisis management process plays a key role in reorienting strategies and structural reorganization. In order to ensure the development of the maritime sector, it is necessary to constantly invest in the growth of transport capacities, deepen ports, build new terminals and modernize existing ones. It also requires the advanced transport development and application, technological, technical, economic, organizational and commercial measures, in order to adapt to the environment. The efficiency of the maritime sector generally strengthens the country’s international and political position, as its activities are linked to international economic cooperation, attracting foreign investment, membership in international organizations and other key factors.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121722081","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}
引用次数: 2
The Negative Impact of the Cruising Industry on the Environment 游轮业对环境的负面影响
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.05
Tatjana Špoljarić
{"title":"The Negative Impact of the Cruising Industry on the Environment","authors":"Tatjana Špoljarić","doi":"10.18048/2020.59.05","DOIUrl":"https://doi.org/10.18048/2020.59.05","url":null,"abstract":"Tourism and travel make a vital contribution to the global economy and are considered particularly important for developing countries. The cruise industry, as part of the tourist offer, created in the beginning by demand from North America, had a dynamic growth for over nearly 40 years. Many studies show that today there is still an increased demand for a form of vacation spent on a cruise ship. For this reason, new cruise destinations are increasingly being developed and cruise ships are getting bigger, which has an increasing impact on the environment. The paper explores the causes and consequences of dynamic cruise industry growth on environment. The aim of the research is to identify the challenges facing the cruising industry when it comes to environmental impact. The research was conducted on the basis of available secondary data sources.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116615679","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}
引用次数: 0
Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads 船用主汽轮机在不同负荷下的火用及各种能量分析方法的比较
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.01
N. Anđelić, V. Mrzljak, I. Lorencin, Sandi Baressi Segota
{"title":"Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads","authors":"N. Anđelić, V. Mrzljak, I. Lorencin, Sandi Baressi Segota","doi":"10.18048/2020.59.01","DOIUrl":"https://doi.org/10.18048/2020.59.01","url":null,"abstract":"This paper present energy and exergy analysis of the main marine steam turbine, which is used for the commercial LNG (Liquefied Natural Gas) carrier propulsion, at four different loads. Energy analysis is performed by using four different methods. The presented analysis allows distinguishing advantages and disadvantages of all observed energy analysis methods and its comparison to exergy analysis of the same steam turbine. Each analysis is based on the measurement results obtained in main turbine exploitation conditions. Main turbine is composed of two cylinders – High Pressure Cylinder (HPC) and Low Pressure Cylinder (LPC). At low turbine loads, the dominant power producer is HPC, while at middle and high loads the dominant power producer is LPC. Energy analysis Method 1 which is based on the same principles as exergy analysis, should be avoided if the majority of turbine losses are not known. Other observed energy analysis methods can be applied in the analysis of any steam turbine, with a note that increase in ideal (isentropic) steam expansion process divisions will result with an increase in energy losses and with a decrease in energy efficiency. Energy analysis Method 2 which consist of only one ideal (isentropic) steam expansion process, for the whole turbine and at all observed loads, results with the lowest energy losses (in the range between 639.98 kW and 6434.17 kW) as well as with the highest energy efficiency (in a range between 53.70% and 79.40%) in comparison to other applicable energy analysis methods. For the observed loads, whole main turbine exergy destruction is in range from 608.64 kW to 5922.86 kW, while the exergy efficiency range of the whole turbine is between 54.94% and 80.73%. Exergy analysis and all three applicable energy analysis methods show that increase in the main turbine load results with simultaneous increase in turbine losses and efficiencies (both energy and exergy).","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123810343","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}
引用次数: 4
An Overview of Modern Technologies in Leading Global Seaports 全球领先海港的现代技术概述
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.02
Helga Pavlić Skender, Elizabeta Ribarić, M. Jović
{"title":"An Overview of Modern Technologies in Leading Global Seaports","authors":"Helga Pavlić Skender, Elizabeta Ribarić, M. Jović","doi":"10.18048/2020.59.02","DOIUrl":"https://doi.org/10.18048/2020.59.02","url":null,"abstract":"This paper provides an overview of the modern technologies used in selected global seaports, and their possible impact on future development of seaports. The research problem stems from inefficience of customs procedures, dispute information flow, unneeded container manipulation in port area, and time lost due to bureucracy procedures. Methods used in this paper are the descriptive method, method of analysis, classification method, and compilation method. Since the majority of leading global seaports are placed in China, the authors decided to analyze the most successful seaport from each country, in order to achieve heterogeneity and global insight into used modern technologies. In total, eleven seaports placed on Lloyd’s list Top 100 Ports have been analyzed. Key findings in this paper are: (1) different level of development of a particular country affects different levels of implementation of new technical and technological achievements, resulting in different levels of development of each seaport; (2) future development of modern technologies in seaports leans towards autonomous technologies such as autonomous drones, and self-driving trucks. Modern technologies may improve the safety and efficiency of operations in and outside seaports.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116646788","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}
引用次数: 5
Use of Convolutional Neural Network for Fish Species Classification 卷积神经网络在鱼类分类中的应用
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.08
D. Štifanić, Z. Car
{"title":"Use of Convolutional Neural Network for Fish Species Classification","authors":"D. Štifanić, Z. Car","doi":"10.18048/2020.59.08","DOIUrl":"https://doi.org/10.18048/2020.59.08","url":null,"abstract":"Fish population monitoring systems based on underwater video recording are becoming more popular nowadays, however, manual processing and analysis of such data can be time-consuming. Therefore, by utilizing machine learning algorithms, the data can be processed more efficiently. In this research, authors investigate the possibility of convolutional neural network (CNN) implementation for fish species classification. The dataset used in this research consists of four fish species (Plectroglyphidodon dickii, Chromis chrysura, Amphiprion clarkii, and Chaetodon lunulatus), which gives a total of 12859 fish images. For the aforementioned classification algorithm, different combinations of hyperparameters were examined as well as the impact of different activation functions on the classification performance. As a result, the best CNN classification performance was achieved when Identity activation function is applied to hidden layers, RMSprop is used as a solver with a learning rate of 0.001, and a learning rate decay of 1e-5. Accordingly, the proposed CNN model is capable of performing high-quality fish species classifications.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115092211","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}
引用次数: 2
Alternative Fuels and Technologies for Short Sea Shipping 短途海运的替代燃料和技术
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.04
David Sopta, Tomislav Bukša, Juraj Bukša, I. Peronja
{"title":"Alternative Fuels and Technologies for Short Sea Shipping","authors":"David Sopta, Tomislav Bukša, Juraj Bukša, I. Peronja","doi":"10.18048/2020.59.04","DOIUrl":"https://doi.org/10.18048/2020.59.04","url":null,"abstract":"Awareness of the consequences of excessive greenhouse gas emissions in maritime transport has prompted research on the use of alternative fuels and technology, towards environmentally neutral ship propulsion, which has resulted in a number of possibilities. This review provides a systematic overview of the current state of use of ship propulsion and alternative options from the aspect of costs, infrastructure, regulations, availability, environmental protection, technology and the perspective of complete decarbonisation by 2050.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133562339","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}
引用次数: 4
Review of Good Practices in the Introduction of Traffic Management Systems and Urban Mobility 检讨引入交通管理系统及城市交通的良好做法
Journal of Maritime & Transportation Science Pub Date : 2020-12-01 DOI: 10.18048/2020.59.06
S. Vilke, F. Tadić
{"title":"Review of Good Practices in the Introduction of Traffic Management Systems and Urban Mobility","authors":"S. Vilke, F. Tadić","doi":"10.18048/2020.59.06","DOIUrl":"https://doi.org/10.18048/2020.59.06","url":null,"abstract":"Mobility, as one of the most significant factors in maintaining the quality of life in cities, faces problems such as traffic congestion and environmental pollution. The rapid population growth in urban areas has had an impact on increased traffic, which is why many cities have decided to implement or improve existing intelligent transport systems (ITS) that reduce traffic congestion with more comfortable and safer pedestrian traffic. Although the population in developed and densely populated cities is familiar with multimodal transportation, inadequate urban transport systems and large individual transport in place continue to pose a major threat. The application of appropriate ITS systems manages traffic and mobility management that are present to residents and facilitate access to all forms of transport. The aim of this paper is to explore urban mobility examples of good traffic management practice for the possibility of their application in cities with issues such as traffic jams and accidents, low pedestrian safety, parking problems, etc.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124567537","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}
引用次数: 0
Longitudinal Ship Launching 船舶纵向下水
Journal of Maritime & Transportation Science Pub Date : 2020-06-01 DOI: 10.18048/2020.00.18
Daniel Žgomba, A. Turk, M. Hadjina, Dijana Hadjina, Ivan Margić
{"title":"Longitudinal Ship Launching","authors":"Daniel Žgomba, A. Turk, M. Hadjina, Dijana Hadjina, Ivan Margić","doi":"10.18048/2020.00.18","DOIUrl":"https://doi.org/10.18048/2020.00.18","url":null,"abstract":"In this paper the ship placement on the slipway and technology of longitudinal launching is analyzed along with conducted static calculation. The first part of the paper describes the longitudinal slipway with all of its equipment made for reception and placement of the particular type of ship. The second part of the paper is describing longitudinal launching of the ship with all of the critical moments during the launching. Every one of the critical positions of the ship is defined and the prevention discussed. Forces and moments of forces for every stage of the launching are calculated with the selected computer software and the static diagram is made and discussed for the particular ship.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115177880","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}
引用次数: 0
Rijeka Bay 3D VOF Costal Flow Model 里耶卡湾三维VOF海岸流模型
Journal of Maritime & Transportation Science Pub Date : 2020-06-01 DOI: 10.18048/2020.00.09
L. Kranjčević, L. Grbčić, Matija Mrazović, Siniša Družeta
{"title":"Rijeka Bay 3D VOF Costal Flow Model","authors":"L. Kranjčević, L. Grbčić, Matija Mrazović, Siniša Družeta","doi":"10.18048/2020.00.09","DOIUrl":"https://doi.org/10.18048/2020.00.09","url":null,"abstract":"3D multiphase flow was analyzed in the area of Rijeka bay in the Adriatic Sea. The necessary morphology data in the range of interest of the coastal bottom area were collected and the spatial surface was created. The functionality of the 3D model was studied in the large area of the realistic stochastic structure of the bottom and the shore. The probability of meteorological conditions and wind impact in the model has been shown. The obtained results give a detailed view of the velocity fields in the horizontal plane of different depths. Numerical simulation was performed in open source program OpenFOAM with Volume of Fluid (VOF) method using the Eulerian approach. For solving this problem interFOAM solver for two incompressible, isothermal, immiscible fluids was used. The resulting simulations showed dominant flow from the western coast of the Krk island to the eastern coast of the Istrian peninsula. Seawater enters the bay through the Srednja Vrata and Tihi Kanal and exits the bay through the Vela Vrata. This research has shown that using a VOF method can be successfully implemented for describing fluid motion in large areas such as bays and oceans.","PeriodicalId":366194,"journal":{"name":"Journal of Maritime & Transportation Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128691900","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}
引用次数: 0
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信