• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.185-187
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• 2013

일반적으로 사람은 육체적, 정신적 그리고 심리적 자극에 반응할 경우 스트레스(Stress)가 유발된다. 이 스트레스는 정상적인 업무수행 뿐만 아니라 건강에 악영향을 미칠 수 있고, 피로누적의 한 원인이 되기 한다. 특히 열악한 환경에서 직무를 수행하는 선원에게 있어서 스트레스는 해양사고의 직간접적인 요인이 될 수 있기 때문에 선박 인적자원관리의 한 측면으로 중요하게 다루어질 필요가 있다. 이 연구는 해운기업이 선원의 인사 및 안전관리 시스템에 활용할 수 있는 선원용 스트레스 평가도구를 개발하기 위한 것으로, 기본영역, 가족생활영역, 재정영역, 직업 및 선박생활영역에 대하여 90개의 항목으로 구성된 설문도구를 개발하여 설문조사를 수행하였고, Holmes & Rahe의 사회적응평가도구의 항목 및 평가지수와 비교분석하여 한국 선원의 문화적 차이를 고려한 설문도구를 개발하기 위한 기초적 연구를 수행하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.477-479
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• 2013

지금까지 해양사고 관련 조사보고서와 연구결과를 살펴보면 선박승무원의 피로가 업무수행능력에 밀접하게 영향을 미쳐서 인간과실을 유발하게하고 결국 각종 해양사고가 발생한다는 사실을 확인할 수 있다. 본 논문에서는 해양사고와 선박승무원의 피로도와 인과관계를 파악하고 분석하기위한 국내외 관련 연구동향 및 그 결과들에 대한 고찰을 하고자 하였다. 이를 기반으로 향후 선박승무원의 피로도를 관리하고 완하할 수 있는 체계적이고 합리적인 방안을 마련하고 최종적으로 충돌, 좌초 등과 같은 각종 해양사고를 예방하는데 기여하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.14-15
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• 2018

선박운항중 항해자의 피로도 변화를 연구하기 위하여, 선박운항시뮬레이터를 이용한 항해자의 신체 변화를 분석하였다. 인천항에 입항하는 상황에서 도선사 및 선장 총 12명을 대상으로 플리커(Flicker) 장비를 이용한 시각 피로 변화, 자율신경검사 분석 장비를 이용한 스트레스 및 누적 피로도 변화를 측정하였다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.2
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• pp.189-200
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• 2019

Korean seafarers have played a key role throughout the country's history and economic development. They have been a major source of foreign remittance into the nation as well as a pivotal sector in emergency logistics during war times. However, the current number of Korean seafarers in decreasing due to low job attractiveness and retention rate onboard. This is a major problem for the national and international shipping industry as youth seem not to be interested in working onboard for long periods of time. The purpose of this study is to 1) determine what the public opinion about seafarers in Korea is and 2) find out what factors mostly stand out in the public opinion about seafarers profession. The paper suggests that three main types of opinion groups emerged. The first type is labeled as 'high risk, high workload and high stress' as respondents recognized a high possibility of accident onboard and, at the same time, acknowledged that seafarers can be fatigued and stressed. The second type was named as 'Dangerous, Dirty, Difficult', as seafarers' image was mainly associated to fishing vessels and not to merchant and passenger ships. The third type recognized that the social position of the seafarers was low due to 'low social recognition'. The study suggests that all three types have a negative image of seafarers' job. Based on the results of this study, it is necessary to establish various policies and marketing tools to improve the negative job image linked to seafarers by the public opinion. If the public image of seafarers can be improved and attractiveness rose, it is expected a higher number of seafarers will pursue and keep a career at sea.

• Journal of Navigation and Port Research
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• v.40 no.4
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• pp.189-196
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• 2016

We propose a virtual sailor training platform which supports emergency drills for ship's fire in virtual environment. Proposed platform not only enhances training efficiency by providing immersiveness, but also enables a consolidated virtual training due to the network-based multiplayer capabilities. Based on the offline fire simulation results using FDS and CFAST the platform visualizes a realistic fire spread in real-time. The training platform on the basis of the fire training material of the maritime safety education institute induces equipment proficiency and environment adaptation throughout immersive virtual environment in addition to procedure proficiency as well. In the implementation we showed that the equipment and environment controls and telepresence improve the training proficiency and enable collaborative virtual training that participates multiple trainees and induces cooperation for a common goal. Implementation of the platform demonstrated the skill mastery capability of the drill such as efficient fire apparatus controls and passenger controls.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.12
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• pp.1898-1907
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• 2022

Every year, many shipping companies provide seaman safety education programs periodically to reduce ocean-traffic accidents. However, undertaking the regular safety training for seaman has been difficult because of litimation of space and time. Recently, VR technolgy is received attentions to overcome previous problems. It can provide users educational interactions between a user and virtual environment and fulfill sustainable teaching. In this paper, VR-based safety education content for sailors has been developed, and it includes four programs. Also, survey was conducted with four questionnaires such as immersiveness, easy to experience, satisfaction of education contents, comparative evaluation between traditional education program and VR education contents. As the result, immersiveness questionnaire could be gain 53.83% positive assessment, and easy to experience could be gain 65.38% positive assessment, and satisfaction could be gain 69.23% positive assessment. Lastly, comparative evaluation between traditional education program and VR education contents could be gain about 46% positive and 34% neutral assessments.

• Nuclear Engineering and Technology
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• v.4 no.3
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• pp.223-228
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• 1972

In the radiography, of thick materials the scattered rays from an object are one of major causes to reduce the quality of the radiographic image on the film. To determine the rate of scattering of incident gamma rays by an objective specimen, film blacknesses are measured for various slit widths. For each measurement, the changes of a penetrameter's sensitivity are also evaluated. It is observed that the fault-detectability can be improved by reducing the slit width when the fault detectability deteriorates due to the increase in scattered gamma rays by thicker samples. This experiment has been carried out with the iron specimens and $^{60}$ Co source.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2017.11a
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• pp.248-248
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• 2017

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.181-185
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• 2016

In this paper we propose a VR-based Sailor Training Platform Authoring Tool which efficiently trains sailors in immersive ways. Proposed authoring tool consists of virtual environment reconstruction that imports real ship indoor environment into virtual environment and script editing which is able to implement various scenarios in emergency based on just drag-and-drop interface. The aim of importing real ship environment and supporting various VR devices is to enhance immersiveness and training so that trainees can deal with serious emergency events. Also the usefulness of the interface enables to reduce the cost of making training materials. Throughout scenario editing interface, the proposed authoring tool supports the editing of multi-user scenario and setting individual task for the evaluation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.10a
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• pp.139-140
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• 2010

IMO는 해양사고의 80% 이상이 인적과실에 기인하고 있음에 관심을 갖고 ISM Code를 채택 시행하고 있으며, 이로 인해 해양사고의 발생률은 줄었으나, 여전히 인적과실이 해양사고의 주요 요인이 되고 있으며, 특히 선원의 피로가 기여하는 바가 크다는 점에 주목하였다. 이에 IMO STW전문위원회에서는 1999년 11월에 개최된 제21차 회의에서 채택된 안전승무기준에 관한 결의서 A.890(21)의 개정이 필요하며, 현행 SOLAS협약 상 각 체약국 정부가 자체적으로 정하여 시행하고 있는 최소안전승무기준을 통일시켜 국제적으로 일관된 기준에 따라 적절히 시행될 수 있도록 노력하고 있다. 이 논문은 IMO STW전문위원회 논의결과 마련된 최소 안전승무기준의 주요내용과 향후 전망에 대해 알아보도록 한다.