• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.106-108
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• 2014

이 연구는 선주, 선원노동조합, 정부기관, 선원교육기관 등 선원유관단체들의 선원보건의료 실태와 선내 응급의료지원 실태 등에 대한 인식도 조사를 실시하여 의료사각지대인 선내의료 및 선원 건강관리 여건을 개선하기 위한 방향을 제안하고, 향후 선내 의료지원제도 개선방향에 대한 기초자료 제시와 개선점을 찾는 것을 목적으로 한다.

• Journal of radiological science and technology
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• v.30 no.1
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• pp.33-38
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• 2007

The propose of this study is a verification of the correct calculation of the dose around source and the prescription dose of Ir-192 source in the plato treatment planning system. The source and orthogonal coordinates for lateral direction and those for the anterior posterior direction were drawn on a A4 paper and then input into the system. The prescription dose was prescribed to two points with radius 1 cm in the direction of polar angle $90^{\circ} and $270^{\circ} from the center of the source. The doses of prescription point and dose points acquired from the treatment planning system were compared with those from manual calculation using the geometry function formalism derived by Paul King et al. In this analysis, the doses of prescription point were exactly consistent with each other and those of dose points were obtained within the error point of 1.85%. And the system of accuracy was evaluated within 2% of tolerance error. Therefore, this manual dose calculation used for the geometry function formalism is considered to be useful in clinics due to its convenience and high quality assurance.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.148-150
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• 2016

다국적 선원으로 구성된 선박환경에서 근무하는 선원들에게는 원활한 의사소통을 위한 영어구사능력뿐만 아니라 서로 다른 문화에 적절히 대응하고 융합하는 이문화 커뮤니케이션 능력함양이 절대적으로 요구된다 할 것이다. 특히 필리핀, 중국, 인도, 일본, 인도네시아, 한국, 미얀마를 비롯한 아시아 선원들이 전 세계 선원시장에서 차지하는 비중이 50%에 달하는 점과, 이들 국가들이 영어를 모국어로 사용하고 있지 않은 점을 고려할 때, 아시아 지역 선원들에 대한 해사영어 교육훈련의 중요성은 아무리 강조하여도 지나치지 않을 것이다. 따라서 이 연구에서는 아시아해사영어교육센터에 대한 구성과 역할 및 향후 추진방향 등을 제시하고자 한다.

• Nuclear Engineering and Technology
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• v.20 no.2
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• pp.132-136
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• 1988

A strategic question in groundwater contaminant transport modeling is whether we need to treat waste packages or drums as individual, discrete sources or as approximately lumped sources. In this paper we present analyses of array sources in porous media. We analyze a planar array of sources in porous media with groundwater flow. We compare the concentration field predicted by a detailed model of individual point sources to concentration fields predicted by an infinite plane source and a single point source, all of the same equivalent strength. From this study we identified three regions: (1) a region close to the sources where the effects of adjacent sources are significant and individual source models should be used, (2) a region extending from a few meters to hundreds to thousands of meters downstream, where an equivalent source of infinite extent gives accurate results, and (3) a far-field region, where in an equivalent source of finite extent gives accurate results.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.22-24
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• 2011

본 연구는 예부선 선원이 해상작업 시 발생할 수 있는 근골격계 부담 작업의 위험성을 평가 하기위해 실행되었다. 근골격계 부담 작업은 예부선 선원들의 인터뷰, 작업 분석, 자세 평가를 통해 분석을 통해 분석이 되었으며, 도출된 근골격계 부담 작업은 인간공학 분야에서 작업자세 평가 도구인 OWAS, REBA를 활용하여 분석을 실시하였다. 분석을 위해 오일 탱커 부선에서 작업을 하는 예부선 선원들의 송유관 체결 작업과 모선과 접안을 위한 줄 잡기 작업을 분석하였으며 해당 작업들은 OWAS 점수 3점과 REBA 점수 9점 이상으로 해당 작업이 근골격계에 부담되는 작업이며 작업자세 교정이 필요한 것으로 나타났다. 따라서 예부선 작업환경의 위험성이 외부환경에 대한 위협뿐만 아니라 작업자의 작업자세가 장기적인 위협을 보이고 있음을 보여주었다.

• Progress in Medical Physics
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• v.14 no.2
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• pp.81-89
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• 2003

The dose distributions of designed Ir-192 micro-source were investigated by dose computations which were accomplished by employing shape of encapsule material and thickness of the source for self-absorption. The computation dose derived from air-kerma rate (S$_{k}$ ) and dose rate constant (Λ) includes the anisotropy of dose distribution around the source. We got the dose rate constants in a water medium is 1.154 cGy h$^{-1}$ U$^{-1}$ . The size of the source was 0.5 mm in diameter and 3.5 mm in length and it was encapsuled in 1.1 mm$\Phi$${\times}$5.5 mm of stainless steel sealed with 0.3 mm of filter thickness. The tissue dose of reference point at 1.0 cm radial distance of the source axis was delivered 1.154 Uh$^{-1}$ (1.3167${\times}$10$^{-3}$ cGy/mCi-sec) from the S$_{k}$ 4.108U/mCi of Ir-192 source. The filtration effect contributed to air-kerma strength as exponential filtering effect of 86.2% in total attenuation, but self-absorption was 88.4% from radial dose distributions. In particular, the dose attenuations showed a rapid anisotropic distributions as 56% of reference dose along to $\pm$10 degrees from the tip of source axis and 50% for of that to source-cable direction. We persist in use the large diameter of applicator will avoid the dose anisotropy by the filtered attenuation effects along the axis of Ir-192 micro-source.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.227-229
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• 2013

이 연구는 선원의 의료와 건강실태 현황을 설문조사를 통하여 선원에 대한 의료지원 및 건강증진을 위하여 개선해야 할 점을 찾고 의료사각지대로 되어 있는 선내 의료 및 건강관리 여건을 개선하기 위한 제도개선 방향과 선원건강증진을 위한 정책 추진과제를 제안하였다.

• Journal of Navigation and Port Research
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• v.36 no.10
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• pp.811-817
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• 2012

This study aims to empirically identify how job embeddedness which is consisted of links, fit, and sacrifice affects seafarers' turnover intention via organizational commitment. The results of covariance structure analysis on the questionnaire data collected from 362 seafarers are as follows. First, as job embeddedness increases, the seafarers' organizational commitment also increases. Second, organizational commitment seems to have negative relationship with seafarers' turnover intention at the marginally significant level, since links and fit have direct negative relationship with turnover intention.

• Journal of Advanced Marine Engineering and Technology
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• v.38 no.3
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• pp.318-324
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• 2014

A Citadel is a designated pre-constructed space in the ship for the crew protection, in the event of imminent boarding by pirates. A Citadel is to be designed and constructed to resist for a certain period against pirate attack. A Citadel constructed in secret place of the ship based on the provisions of international and national requirements, is the last refuge from the pirates attack. This study try to identity identify the limitation and weakness of the current Citadel and suggest to applicable improvement on the Rules for Ship's Facilities for safer and more secure Citadel.

• Journal of Navigation and Port Research
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• v.31 no.10
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• pp.897-903
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• 2007

The purpose of this study is to examine empirically the cultural problem and working attitude in the Korean vessel of combined foreign crews, Currently, the restrictions on the employment of the foreign crews are being eased in the Korean shipping industry and many problems such as misunderstanding and dissonance in working have been occurred consequently, However, specific and empirical studies regarding different culture between Korean and foreign crews working together in the vessel have not yet carried out, So this study is meaningful as exploratory research about cultural homogeneity, onboard working tolerance and organization commitment for combined foreign crews and the result of this study contributes to management of crew and vessel organization.