Journal of Eta Maritime Science最新文献_第2页

Selection of Ocean Container Carrier: An Analytic Network Process (ANP) Approach 海洋集装箱承运人选择:一种分析网络过程(ANP)方法

Journal of Eta Maritime Science Pub Date : 2023-09-29 DOI: 10.4274/jems.2023.96977

Ayfer Ergin, Güler Alkan

引用次数: 0

Numerical Investigation of the Maneuvering Forces of Different DARPA Suboff Configurations for Static Drift Condition 静态漂移条件下DARPA潜器不同构型机动力的数值研究

Journal of Eta Maritime Science Pub Date : 2023-09-29 DOI: 10.4274/jems.2023.18942

Hasan Öztürk, KADIR BEYTULLLAH GÜNDÜZ, Yasemin ARIKAN OZDEN

{"title":"Numerical Investigation of the Maneuvering Forces of Different DARPA Suboff Configurations for Static Drift Condition","authors":"Hasan Öztürk, KADIR BEYTULLLAH GÜNDÜZ, Yasemin ARIKAN OZDEN","doi":"10.4274/jems.2023.18942","DOIUrl":"https://doi.org/10.4274/jems.2023.18942","url":null,"abstract":"In this study, the maneuvering forces and moments of the DARPA Suboff submarine model were determined under static drift condition using computational fluid dynamics (CFD) methods. Two different configurations of the submarine model namely; the AFF-3 configuration, which consists of bare hull and four stern rudders, and the fully appended configuration AFF-8, which is formed from bare hull, sail, and four stern rudders, have been used. Initially, for the AFF-3 configuration, a mesh independence study has been conducted. Three different cases; coarse, medium and fine meshes are investigated at small angles (0-2-4-6 degrees). After that the results have been verified, the medium mesh structure has been selected and the analyzes have been continued for larger angles (from 00 to 180 degrees). The accuracy of the obtained results was assessed by comparing them with non-dimensional experimental results. The comparison between the CFD results and the experimental results demonstrated a high level of agreement, indicating the effectiveness and accuracy of the CFD methods used in this study. After the validation studies, the maneuvering forces and moments of the AFF-8 fully appended configuration were calculated for which no prior experimental data existed in the literature. To achieve this, steady-state CFD simulations were performed using the commercial software ANSYS Fluent, and the results were presented for the same flow angles.","PeriodicalId":41280,"journal":{"name":"Journal of Eta Maritime Science","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135131294","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

Application of relaxation times distribution of dielectric permittivity for marine engine oils analysis 介电常数弛豫时间分布在船用发动机油分析中的应用

Journal of Eta Maritime Science Pub Date : 2023-09-29 DOI: 10.4274/jems.2023.48568

Nikolay Sinyavsky, Oksana Synashenko, Natalia Kostrikova

引用次数: 0

Multi-criteria analysis of capesize bulk carrier design optimization model 好望角型散货船设计优化模型的多准则分析

Journal of Eta Maritime Science Pub Date : 2023-09-29 DOI: 10.4274/jems.2023.77045

Cansu Aksu, Ramazan Yaman

引用次数: 0

Autonomous Network System with Specialized and Integrated Multi-Sensor Technology for Dynamic Monitoring of Marine Pollution (SMARTPOL) 基于多传感器技术的海洋污染动态监测自主网络系统(SMARTPOL)

Journal of Eta Maritime Science Pub Date : 2023-09-29 DOI: 10.4274/jems.2023.61687

Nurten Vardar, Bülent Bayram, Amit Mishra, Mihai Palade, Bekir Şener, Ines Boujmil, Jeremy Scerri, Andre Attard, İskender Demir

引用次数: 0

Fear of COVID-19 in Seafarers: Association with Psychological Distress 海员对COVID-19的恐惧:与心理困扰的关系

IF 0.9

Journal of Eta Maritime Science Pub Date : 2023-09-06 DOI: 10.4274/jems.2023.58966

Arda Toygar, U. Yıldırım

{"title":"Fear of COVID-19 in Seafarers: Association with Psychological Distress","authors":"Arda Toygar, U. Yıldırım","doi":"10.4274/jems.2023.58966","DOIUrl":"https://doi.org/10.4274/jems.2023.58966","url":null,"abstract":"Since its inception, the coronavirus pandemic has caused serious social, economic, and health problems around the world. Seafarers have been identified as key workers in mitigating the negative impact of the coronavirus on global trade and ensuring the delivery of medical and hygiene supplies to regions in need. However, the complete closure policies implemented by certain countries have led to prolonged periods on board for seafarers with expired contracts and economic hardship for those unable to join new assignments. Seafarers who spend long periods on board a ship must deal with issues that may affect their psychological state. Therefore, it is important to identify the factors that cause seafarers to experience psychological distress and to develop relevant strategies to address them. The aim of this study was to determine the association between seafarers’ fear of coronavirus disease-2019 (COVID-19) and psychological distress including symptoms of anxiety, depression, and stress. The questionnaire used the fear of COVID-19 Scale and the expression, Anxiety and Stress Scale), which have strong psychometric properties. Data were collected from 425 qualified seafarers working on international merchant ships and analyzed by structural equation modeling using AMOS-24. The results indicate that seafarers’ fear of COVID-19 is positively associated with symptoms of anxiety and stress but not with depression. Maritime companies, sectoral organizations, and policymakers should collaborate to reduce these associations among seafarers. A unified management approach improved access to health services, and regular mental health assessments can be effective solutions.","PeriodicalId":41280,"journal":{"name":"Journal of Eta Maritime Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46662744","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

Estimation of Human Errors During Cargo Unloading Operations on Bulk Carriers Using SLIM and Interval Type 2 Fuzzy Sets 基于SLIM和区间2型模糊集的散货船装卸作业人为误差估计

IF 0.9

Journal of Eta Maritime Science Pub Date : 2023-09-06 DOI: 10.4274/jems.2023.92260

Ahmet Lutfi Tunçel, Pelin Erdem, Osman Turan

{"title":"Estimation of Human Errors During Cargo Unloading Operations on Bulk Carriers Using SLIM and Interval Type 2 Fuzzy Sets","authors":"Ahmet Lutfi Tunçel, Pelin Erdem, Osman Turan","doi":"10.4274/jems.2023.92260","DOIUrl":"https://doi.org/10.4274/jems.2023.92260","url":null,"abstract":"Cargo unloading operations on bulk carriers are critical shipboard operations. Many tasks are expected to fulfill by the ship’s personnel to safely complete this type of operation. However, many human errors may occur during this process, and this situation threatens the safety of life and property. In this respect, this study predicts potential human errors and probabilities that may occur during cargo unloading operations on bulk carrier ships. In this study, an integrated human error prediction approach is proposed using interval type 2 fuzzy sets and the success likelihood index method. Thus, within the scope of this study, a model was obtained that allows human errors to be evaluated both qualitatively and quantitatively. Because of the analyzes made, it has been found that the most common human errors that occur while unloading cargo operations on bulk carriers occur in the processes of following the ballast operation and performing the tasks to prevent excessive trim/list formation on board ship, respectively. In addition, it was concluded that the factors that most shape the performance of the ship’s personnel are education, communication, and experience.","PeriodicalId":41280,"journal":{"name":"Journal of Eta Maritime Science","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48286932","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

Neuroscience Approach to Situational Awareness: A Research on Marine Navigation 情境意识的神经科学方法——海洋导航研究

IF 0.9

Journal of Eta Maritime Science Pub Date : 2023-09-06 DOI: 10.4274/jems.2023.67699

Serkan Kahraman, D. Deveci, Ibrahim Oztura, Dilara Mermi Dibek

引用次数: 0

Protecting Intellectual Capital at Sea 保护海上智力资本

IF 0.9

Journal of Eta Maritime Science Pub Date : 2023-06-22 DOI: 10.4274/jems.2023.67299

S. Nas

引用次数: 0

Volatility Transmission Between Container and Dry Bulk Freight Markets During the COVID-19 Pandemic 2019冠状病毒病大流行期间集装箱和干散货运输市场波动传导