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AN APPLICATION OF AGENT-BASED TRAFFIC FLOW MODEL FOR MARITIME SAFETY MANAGEMENT EVALUATION 基于AGENT的交通流模型在海事安全管理评价中的应用
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.1172
Burcu Çelik, Y. Zorba
{"title":"AN APPLICATION OF AGENT-BASED TRAFFIC FLOW MODEL FOR MARITIME SAFETY MANAGEMENT EVALUATION","authors":"Burcu Çelik, Y. Zorba","doi":"10.5750/ijme.v165ia1.1172","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.1172","url":null,"abstract":"This paper aims to analyse maritime traffic safety assessment via a traffic flow simulation model. The model developed via NetLogo platform, agent-based modelling and simulation approach. And it is implemented on an open sea area, at the Aegean Sea to show its applicability. The model is verified through experiments conducted in the area. The simulation outputs give the risky locations and scores. Risky locations and risk scores in the area are determined as the outputs of the simulation runs. A traffic separation scheme is established to prove the suitability of the model as adaptable and updatable. After the scheme is implemented, it shows that the potential collision locations and scores change considerably. The developed model is convenient to simulate various conditions by changing the input parameters on maritime traffic safety","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46499653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
INTELLIGENT MONITORING OF A LARGE CATAMARAN FERRY 大型双体船渡船的智能监控
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.791
B. Shabani
{"title":"INTELLIGENT MONITORING OF A LARGE CATAMARAN FERRY","authors":"B. Shabani","doi":"10.5750/ijme.v165ia1.791","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.791","url":null,"abstract":"Wave load cycles, wet-deck slamming events, accelerations and motion comfort are important considerations for high-speed catamarans operating in moderate to large waves. Although developing a hull monitoring system according to classification guidelines for such vessels is broadly acceptable, the data processing requirements for outputs such as rainflow counting, filtering, probability distribution, fatigue damage estimation and warning due to slamming can be as sophisticated to implement as the system components themselves. Advanced analytics such as machine learning and deep learning data pipelines will also create more complexities for such systems, if included. This paper provides an overview of data analytics methods and cloud computing resources for remotely monitoring motions and structural responses of a 111 m high-speed catamaran. To satisfy the data processing requirements, MATLAB Reference Architectures on Amazon Web Services (AWS) were used. Such combination enabled fast parallel computing and advanced feature engineering in a time-efficient manner. A MATLAB Production Server on AWS has been set up for near real-time analytics and execution of functions developed according to the class guidelines. A case study using Long Short‑Term Memory (LSTM) networks for ship speed and Motion Sickness Incidence (MSI) is provided and discussed. Such data architecture provides a flexible and scalable solution, leading to deeper insights through big data processing and machine learning, which supports hull monitoring functions as a service.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47261201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SEAFARER SELECTION FOR SUSTAINABLE SHIPPING: CASE STUDY FOR TURKEY 可持续航运的海员选择&以土耳其为例
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.1177
U. Yıldırım, Gani Mustafa İnegol
{"title":"SEAFARER SELECTION FOR SUSTAINABLE SHIPPING: CASE STUDY FOR TURKEY","authors":"U. Yıldırım, Gani Mustafa İnegol","doi":"10.5750/ijme.v165ia1.1177","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.1177","url":null,"abstract":"Sustainability and safety in the maritime sector mostly relies on seafarers for ensure the safe and secure operation of ships. Selection of personnel in the maritime sector is based on a large number of criteria, and is dictated by the seafarer’s qualification and the type of ship. The present study identifies 24 criteria in the form of personal, professional, physical, and technical competencies, categorized under four main headings, and calculates the weights of these criteria in terms of their importance. It goes on to present the general seafarer criteria and the different criteria required by different types of companies, and finally presents a model that can serve as a guide the in the selection of the best seafarer depending on the ship type. The study makes use of Step-Wise Weight Assessment Ratio Analysis and Additive Ratio Assessment methods, which are multi-criteria decision making methods.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41400349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
VOYAGE SPEED OPTIMIZATION USING GENETIC ALGORITHM 基于遗传算法的航行速度优化
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.1200
Tarik Taspinar, Zeynep Orman
{"title":"VOYAGE SPEED OPTIMIZATION USING GENETIC ALGORITHM","authors":"Tarik Taspinar, Zeynep Orman","doi":"10.5750/ijme.v165ia1.1200","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.1200","url":null,"abstract":"Decreasing the fuel consumption and thus greenhouse gas emissions of vessels have emerged as a critical topic for both ship operators and policymakers in recent years. The speed of vessels has long been recognized to have the highest impact on fuel consumption. The aim of this study is to develop a speed optimization model using a time-constrained genetic algorithm (GA). Subsequent to this, this paper also presents the application of machine learning regression methods in constructing a model to predict the fuel consumption of vessels. The local outlier factor algorithm is used to eliminate outliers in prediction features. The overfitting problem is observed after hyperparameter tuning in boosting and tree-based regression prediction methods. The early stopping technique is applied for overfitted models. In this study, speed is found to be the most significant feature for fuel consumption prediction. On the other hand, GA evaluation results showed that random modifications in the default speed profile could increase GA performance and thus fuel savings more than constant speed limits during voyages.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45464318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FRACTURE SAFETY OF LIQUEFIED NATURAL GAS TANK IN CRYOGENIC CONDITIONS 低温条件下液化天然气储罐的断裂安全
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.1208
G. An, Jeongung Park, Dae-Jeong Seong, I. Han
{"title":"FRACTURE SAFETY OF LIQUEFIED NATURAL GAS TANK IN CRYOGENIC CONDITIONS","authors":"G. An, Jeongung Park, Dae-Jeong Seong, I. Han","doi":"10.5750/ijme.v165ia1.1208","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.1208","url":null,"abstract":"High-manganese austenitic steel has been developed as a new cryogenic steel for application in liquified natural gas (LNG) storage and fuel tanks, with improved fracture toughness and safety at cryogenic temperatures. Generally, the fracture toughness decreases at lower temperatures; therefore, cryogenic steel requires a high fracture toughness to prevent unstable fractures. This study conducted unstable ductile fracture tests with 30-mm-thick high-manganese austenitic steel and evaluated its applicability to LNG storage and fuel tanks. The ductile fracture resistance in the weld joints was evaluated, including the weld metal and heat-affected zone. The unstable fracture resistance was evaluated for different LNG tank types. It was found that high-manganese austenitic steel has excellent unstable fracture characteristics and good material performance as a cryogenic steel; therefore, it can be applied in LNG storage and fuel tanks.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46773222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
METHODOLOGY APPLIED TO STUDY WATER MIST AS AN INFRARED SIGNATURE SUPPRESSOR IN MARINE GAS TURBINES 水雾作为船用燃气轮机红外信号抑制器的研究方法
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.815
R. Villa Caro, R. Pérez Fernández, Julio M. Pernas Urrutia, Filiberto Hernandez
{"title":"METHODOLOGY APPLIED TO STUDY WATER MIST AS AN INFRARED SIGNATURE SUPPRESSOR IN MARINE GAS TURBINES","authors":"R. Villa Caro, R. Pérez Fernández, Julio M. Pernas Urrutia, Filiberto Hernandez","doi":"10.5750/ijme.v165ia1.815","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.815","url":null,"abstract":"This paper proposes a methodology for the reduction of marine gas turbine exhaust gas temperatures via water mist injection into exhaust gas ducts with the aim of reducing a ship’s infrared (IR) signature. Due to the difficulty of conducting live experimental tests on warships, Computational Fluid Dynamic (CFD) techniques can be employed to predict phase interaction behaviour (water mist and exhaust gases) within gas turbine exhausts. CFD techniques attempt to find numerical solutions to the equations that govern phase interaction phenomena through the setting and resolution of mathematical models.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45512039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Open Framework for Data Taxonomies in Digital Twin Ships 数字双船数据分类的开放框架
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.813
Ícaro Aragão Fonseca, Henrique Murilo Gaspar
{"title":"An Open Framework for Data Taxonomies in Digital Twin Ships","authors":"Ícaro Aragão Fonseca, Henrique Murilo Gaspar","doi":"10.5750/ijme.v165ia1.813","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.813","url":null,"abstract":"The digital twin concept describes a comprehensive model used to monitor and simulate an existing asset in nearly real-time. In a maritime context, digital twins do not yet have a wide selection of standards to support interoperability among systems, undermining users’ ability to create a cohesive digital twin that combines multiple software suites. This study proposes an open framework for organizing ship and sensor data in digital twins. The framework is based on principles of product data management, allowing use of taxonomies suitable across stages of the lifecycle up to operation, when the digital twin is deployed. We implement the framework using a web-based approach that focuses on early design and operation phases, then apply it to a case study with a research vessel. The case study outlines browsing of ship model, examples of behaviour simulations, and future monitoring of sensor measurements. We discuss how the framework might be expanded and the challenges when applying it to existing engineering practice.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47342628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EXPERIMENTAL STUDY OF A VARIABLE BUOYANCY SYSTEM FOR LOW DEPTH OPERATION 低深度作业变浮力系统的实验研究
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-07-10 DOI: 10.5750/ijme.v165ia1.1203
B. K. Tiwari, D. R. Sharma, Tae-Wan Kim
{"title":"EXPERIMENTAL STUDY OF A VARIABLE BUOYANCY SYSTEM FOR LOW DEPTH OPERATION","authors":"B. K. Tiwari, D. R. Sharma, Tae-Wan Kim","doi":"10.5750/ijme.v165ia1.1203","DOIUrl":"https://doi.org/10.5750/ijme.v165ia1.1203","url":null,"abstract":"Autonomous Underwater Vehicles (AUVs) are used for the underwater survey both in coastal areas and deep sea without any human intervention during their operations. However, high energy consumptions required by the thrusters of the AUV’s adversely affect their performance such as range and endurance, etc. Herein, we have presented a novel design and development of a standalone variable buoyancy system for autonomous underwater vehicle and investigated the numerical and experimental analysis of Variable Buoyancy System (VBS) in standalone mode. Design idea is based upon the ‘Pump Driven Variable Buoyancy System (PDVBS)’ using ‘Water Hydraulic Variable Buoyancy System (WHVBS)’ method to control the buoyancy using a diaphragm type positive displacement pump (PDP) with capacity of the maximum buoyancy change rate of 4.5 kg/min. Detail experimental and simulation performance of the developed VBS has been investigated. Developed VBS is tested for maximum depth of 5 m and compared the performance of the experimental and simulation results. Presented results demonstrate that designed VBS is effective in changing buoyancy and controlling heave velocities and that will result to achieve the higher range and endurance and better performance in rescue/attack operations.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45974969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultimate Strength of Quasi-Isotropic Composites: ISO 12215-5:2019 Validation 准各向同性复合材料的极限强度:ISO 12215-5:2019
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-04-12 DOI: 10.5750/ijme.v164ia4.1260
R. Loscombe
{"title":"Ultimate Strength of Quasi-Isotropic Composites: ISO 12215-5:2019 Validation","authors":"R. Loscombe","doi":"10.5750/ijme.v164ia4.1260","DOIUrl":"https://doi.org/10.5750/ijme.v164ia4.1260","url":null,"abstract":"Discussion \u0000With the incorporation of the International Journal of Small Craft Technology into the IJME, it is always good to see papers of direct concern to the small craft design community. The process of on-going validation of scantling rule formulae is also to be welcomed. The authors are to be commended on both counts. Word count restricts comments/questions to the ultimate flexural strength of hand-laminated panels (Table 5).","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48828651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Novel Approach to Robust Concept Development for Offshore Floating Systems 海上浮式系统鲁棒概念开发的新方法
IF 0.4 4区 工程技术
International Journal of Maritime Engineering Pub Date : 2023-04-03 DOI: 10.5750/ijme.v164ia4.1206
P. Gallagher
{"title":"Novel Approach to Robust Concept Development for Offshore Floating Systems","authors":"P. Gallagher","doi":"10.5750/ijme.v164ia4.1206","DOIUrl":"https://doi.org/10.5750/ijme.v164ia4.1206","url":null,"abstract":"This paper describes a new approach to the application of robust design optimisation to the development and selection of floating systems during concept and early-stage engineering.  The basis of the approach is to combine a genetic algorithm with an efficient non-intrusive statistical model to allow both uncertainties in modelling (intrinsic uncertainty) and requirements (extrinsic uncertainty) to be accounted for within a Robust Design Framework that directs optimisation toward unique design solutions. A particular interpretation of the Pareto design objective space enables required levels of performance margin and meaningful measures of confidence in design objectives to be achieved.  The approach can be used to provide a systematic series of optimal hull geometries (geosims) that meet the most likely variations in design requirements, and so mitigate the impact of change early in the design cycle. This paper follows on from and earlier publication (IJME648) on multi-objective, multi-discipline, optimisation and uses the same case study.","PeriodicalId":50313,"journal":{"name":"International Journal of Maritime Engineering","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45561793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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