• Journal of Navigation and Port Research
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• v.34 no.6
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• pp.405-415
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• 2010

To assess the possible collision risk between Mokpo Harbour Bridge, which is under construction, and passing vessels, we proposed Real-Time Bridge-Vessel Collision Model (RT-BVCM) in this paper. The mathematical model of RT-BVCM consists of the causation probability by the vessel aberrancy due to navigation environments, the geometric probability by the structural feature of a bridge relative to a ship size and, the failure probability by the ship collision track and the stopping distance which is not to come to a stop before hitting the obstacles. Then, the probabilistic mathematical model represented as risk index with the risk level from 1 to 5. The merit of the proposed model to the collision model proposed by AASHTO (American Association of State Highway and Transportation Officials) is that it can provide enough time to take adequate collision avoiding action. Through the simulation tests to the two kinds of test ships, 3,000 GT and 10,000 GT, it is cleary found that the proposed model can be used as a collision evaluation model to the passing vessel and Mokpo Harbour Bridge.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.26-27
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• 2019

This study is to calculate the Real-Time contact point of ellipses between the vessels ships by Ship's Bumper Theory. The Real-Time contact point of ship's bumper ellipses can be used the important tool to feel the perceived risk evaluation of ship's collision risk by VTS operator. In this paper, The warning information to feel the risk of collision between the vessels in advance is able to help them for VTS operation, We will study the technique to certify the perceived risk of collision from several different angles by programming.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.471-473
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• 2013

주요 통항로에 설치된 해상교량과 해상풍력단지는 선박의 안전항해에 지대한 영향을 미친다. 특히, 90년대 들어 국내에 다수 건설된 해상교량은 과거에 경험하지 못한 대규모 선박-교량 충돌사고의 유발 가능성을 예고하고 있다. 또한 국내 군산지역에 구축될 해상풍력단지 역시 선박과의 충돌 가능성을 내포하고 있다. 이 논문에서는 과거에 연구 개발된 해상교량과 해상풍력단지의 안전성 평가기법을 조사하고, 향후 실용화 방안을 모색하였다. 연구결과, 기존 연구결과를 토대로 위기관리 시스템을 구축하면 궁극적인 해양사고 예방이 가능할 것으로 고려되었다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.1
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• pp.98-107
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• 2016

The purpose of this study is for Human error prevention to acquire Collision Risk Perception Index (CRPI) sensed by the Officer Of the Watch (OOW) when the approaching distances are reduced in six types of ship encountering situations (Head on, $045^{\circ}$, $090^{\circ}$, $135^{\circ}$, Overtaking, Overtaken) between own ship and a target ship and then to predict CRPI fitting coefficients with polynomials in the curve-fitting process. CRPI acquisition experiments are carried out on two coast-guard ships and with the total of 30 crew members. Analysing results shows that CRPI data have goodness of fit to the six types of encountering situation. Futhermore, the One-Way ANOVA results show that CRPI has a negative affect to the OOW's age, career and license grade as the approaching distances is reduced. The availability of CRPI curve fitting with 3 degrees of polynomial was testified through the RMSE as 1.19 to Head on, 0.87 to $045^{\circ}$, 0.81 to $090^{\circ}$, 0.71 to $135^{\circ}$, 1.29 to Overtaking and 0.87 to Overtaken.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.205-207
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• 2015

LNG/LPG는 폭발가능성이 크기 때문에 매우 위험한 물질이다. LNG/LPG는 gas상태의 연료를 극 초저온에 고 압력 상태로 고농축한 액체 연료이다. 온도나 압력에 따라 물질의 상태가 변하기 때문에 폭발이나 화재가 일어날 수 있다. 하지만 무조건 사고가 일어나는 것은 아니며 현재까지도 화재나 폭발이 일어난 경우가 드물다. LNG/LPG선박은 충돌이나 파손 등 사고위기가 클수록 위험하다. 사고위기가 일어나는 요소로는 복잡한 항로, 많은 선박 수, 해마다 증가하는 LNG/LPG의 수요량 등이 있다. 본 연구에서는 LNG/LPG관련 해양사고 시나리오를 만들기 위해 사고 연계 고리(Accident chain)를 만들어 분석하였다. 해양사고의 연계 고리를 만들기 위해서는 story가 필요하다는 것을 알게 되었고, Risk를 통해 Peril과 Hazard를 분석 할 수 있었다. LNG/LPG의 위험성은 고압에 기인하는 위험, 화재위험, 동상위험, 화학반응의 위험, 질식 위험 등으로 분류 할 수 있었다. 아직까지는 LNG/LPG선박의 화재 및 폭발사고는 거의 일어나지 않았으나 매년 그 수요량이 증가하고 있고, 매우 위험한 물질임을 본 연구를 통해 알 수 있었다.

• Journal of Navigation and Port Research
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• v.35 no.1
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• pp.1-7
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• 2011

This paper describes the development of Data Acquisition System (DAS) to obtain the vessel and weather information needing to evaluate collision risks levels between Mokpo harbor bridge and passing vessels. DAS consists of Signal Receiving and Processing Unit to obtain the data sets of passing vessels and weather status, Networking Unit to transmit and distribute the acquisition data sets and Data Management Unit. Through the field tests on the deck of shuttle car ferry between Mokpo Port Passenger Terminal and An-Jua island, Sinan-Gun, we found that the DAS can provide useful data sets for adequate the collision risk evaluation. In addition, the noise-like data sets appeared in the weather data can be suppressed fully using 5-th order Butterworth digital filter.

• The Science & Technology
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• no.8 s.411
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• pp.8-11
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• 2003

인류 7만년 전 멸종위기 경험/ HIV 조상은 2種의 원숭이 바이러스/ HIV 저항력 항체 수수께끼 풀려/ 3억 8천만년 전 유성충돌로 어류 멸종/ 농약, 정자 수와 질 떨어뜨려/ 남성 Y염색체, 유전결함 스스로 치유/ "낮잠 자면 학습능력 향상"/ 원숭이도 소리와 표정 연결 능력 있다/ 전세계 어디라도 2시간내 폭격 극초음속 무인폭격기 개발한다/ 섹스 억제해도 정자 질 좋아지지 않아/ 새 소립자 '펜타쿼크' 발견/ 담배 못 끊는 건 유전자 탓(?)/ 비닐 쓰레기 먹는 박테리아 발견/ '쌍둥이 태양계' 발견

• Korean journal of communication and information
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• v.57
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• pp.49-68
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• 2012

Much research has been documented on the topic of journalist labour, including process of news production, organizational culture and journalist ethics. Relatively little interest is given to the recent changes in journalist labor caused by the digital convergence in contemporary news industry, however. This study explore the changes from the perspective of the transformation of professional works, practices and identities. For the purpose, in-depth interviews with 17 Korean journalists were conducted and the results can be summarized as follows. First, interviewed journalists expressed both expectations and worries concerning the changes of news production environments. Second, it was found that the new environments could conflict with the old professional culture and confuse the professional identities. Third, the confusion of professional identities was concerned with adaptability, emotional consent or resistance to the changes.

• Convergence Security Journal
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• v.23 no.1
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• pp.147-159
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• 2023

Recently, Chat GPT artificial intelligence (AI) is of keen interest to all governments, companies, and military sectors around the world. In the existing era of literacy AI, it has entered an era in which communication with humans is possible with generative AI that creates words, writings, and pictures. Due to the complexity of the current laws and ordinances issued during the recent national crisis in Korea and the ambiguity of the timing of application of laws and ordinances, the golden time of situational measures was often missed. For these reasons, it was not able to respond properly to every major disaster and military conflict with North Korea. Therefore, the purpose of this study was to revise the National Crisis Management Basic Act, which can act as a national tower in the event of a national crisis, and to promote artificial intelligence governance by linking artificial intelligence technology with the civil, government, military, and police.

• Proceedings of the CALSEC Conference
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• 1998.10a
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• pp.17-25
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• 1998

$\square$ 경쟁 원리에 따른 민간주도 추진 및 최소한의 정부 규제 (환경조성/수요창출 등) $\square$ 전자거래의 안전성, 신뢰성 확보 및 이용자의 권익 보호 (과세원칙/전자지급제도/전자서명, 인증, 암호화/지적소유권보호/소비자보호, 개인정보보호, 분쟁조정) $\square$ 글로벌화의 환경변화에 능동적으로 대응하는 유연한 법제도의 수립 및 시행 (과세 원칙 /전자지급제도) $\square$ 전자거래 기반에 대한 자유로운 현실적 접근. 활용 및 신뢰성ㆍ저렴화 선결 (전자거래기술개발 및 표준화) $\square$ 전자거래 관련 국제협력의 촉진 $\square$ 준비된 소비자 대응 및 네트워크 수요자를 대비한 1:1 마케팅 환경 조성 (집단적 의사대변) $\square$ 기술적 규제를 대비한 개도국 입장의 지속적인 요소기술 연구활동 촉진 및 EC 인프라 구축 $\square$ EC관련 규제체제와 기존 상거래와의 충돌 가능성 제거 및 흡수 (현실/규제의 융합) $\square$ EC 인프라 공동운영 및 거래의 수평적 협동 지원(중략)