• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.5-5
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• 2017

• Magazine of the Korea Concrete Institute
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• v.4 no.2
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• pp.29-38
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• 1992

• Journal of Navigation and Port Research
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• v.34 no.8
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• pp.609-614
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• 2010

This paper describes statistical parameter estimation to calculate collision probabilities between Mokpo Harbor Bridge and passing vessels. At first, we obtained AIS (Automatic Identification System) information from passing vessels, then after, analyzed the lateral distributions of vessel tracks and estimated the mean and the standard deviation for the distance away from bridge center, the passing course and the passing speed. The analysis results of track distribution for the distance away and the passing course are shown as normal type, otherwise the speed distribution shown as two kinds of different normal type. In addition, we testified that the usefulness of estimated parameter values through the relative comparison between the track distributions and it's normal probability distributions.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.6
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• pp.593-599
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• 2016

Incheon Bridge is 13.38 km long with an 800 m span, connecting Incheon International Airport and Songdo International City, Per hour 73.8 vessels navigate this space. The purpose of this study was to suggest a safe passing speed based on the displacement of a vessel based on the safety criteria of Incheon Bridge's anti-collision fence, which was designed during its initial construction. As AASHTO LRFD suggested, vessel collision energy, vessel collision velocity, and the hydrodynamic mass coefficient were considered to derive a safe vessel traffic speed. Incheon Bridge's anti-collision fence was designed so that 100,000 DWT vessels can navigate at a speed of 10 knot. This research suggests a safe speed for vessel traffic through a comparative analysis of an experimental ship's (300,000 DWT) speed and cargo conditions, regulation speed has been calculated according to the collision energy under each set of conditions. Additionally, safe traffic vessel's safe speed was analyzed with reference to tidal levels. Results from the experimental ship showed that a vessel of maximum 150,000 DWT is able to pass Incheon Bridge at a maximum of 7 knots with an above average water level, and is able to pass the bridge with a maximum of 8 knots under ballast conditions.

• 대학교육
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• s.142
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• pp.43-48
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• 2006

대교협은 올바른 임무 수행을 위해 회원대학의 회비에 상응하는 서비스 만족도를 측정해 보아야 하며 전국 대학교 협의체로서의 역할을 재정립해야 한다. 아울러 대학이 가장 크게 관심을 가지는 대학평가 사업에 대한 자체평가를 시도하고, 대학에 대한 전문 지원 조직을 구성해 정보화, 세계화, 특성화를 추진하는 데 있어 발생하는 대학들의 갈증을 해소해줄 수 있어야 한다.

• 대학교육
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• s.142
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• pp.30-35
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• 2006

우리나라의 대학이 '크고 살아 있으며, 힘 있고 창조적인' 대학이 될 수 있도록 대교협은 '큰' 역할을 수행해야 한다. 공인된 질적, 전문적 대학평가 관리기구로서 대학 발전을 저해하는 정치적 세력에 대한 합법적 보호 대처기구로서 자리해야 하며, 대학의 문제를 해결하는 사회적 조정 기제로서의 역할을 수행할 수 있어야 한다. 아울러 대학 현장의 목소리를 가감 없이 경청하고 과소평가하지 않아야 할 것이다.

• Proceedings of the KAIS Fall Conference
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• 2007.05a
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• pp.242-244
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• 2007

본 논문에서는 바다나 강을 가로지르는 대교건설에 있어서 교각의 시공을 돕는 지그설치를 3차원으로 설계하여 시뮬레이션 해봄으로서 대교건설에 소요되는 시간 및 예산을 줄이는데 목적이 있다. 또한 지그의 간섭부위를 미리 예측함으로서 건설엔지니어링의 기술노하우를 강화하고자 한다.

• The Science & Technology
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• v.29 no.11 s.330
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• pp.90-92
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• 1996

지난 8월4일부터 14일까지 중국 북경에서 열린 제30차 국제지질학 총회 및 학술발표회에는 1백여 국가에서 1만여명이 참석하여 성황을 이루었다. 한국에서도 50여명의 지질학자들이 참가한 이번 학술대회에 다녀온 강원대 정대교교수의 참관기를 싣는다.

• Journal of the Korea Construction Safety Engineering Association
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• v.1 no.2
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• pp.61-93
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• 1991

본 붕괴재해 원인진단 조사보고서는 유원건설(주)에서 본 협회에 의뢰한 경기도 하남시 창우동에서 남양주군 와부읍 팔당리를 연결하는 팔당대교의 사장교구간 붕괴사고에 대한 것으로써, 사고원인 및 차후 공법에 대한 안전대책을 소개하고자 한다.

• Journal of Navigation and Port Research
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• v.46 no.4
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• pp.303-312
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• 2022

Bridges across waterways act as interference factors, that reduce the navigable water area from the perspective of navigation safety. To analyze the safety navigational width of ships navigating bridges across waterways, the optimal traffic distribution based on AIS data was investigated, and ships were classified according to size through k-means clustering. As a result of the goodness-of-fit analysis of the clustered data, the lognormal distribution was found to be close to the optimal distribution for Incheon Bridge and Busan Harbor Bridge. Also, the normal distributions for Mokpo Bridge and Machang Bridge were analyzed. Based on the lognormal and normal distribution, the analysis results assumed that the safe passage range of the vessel was 95% of the confidence interval, As a result, regarding the Incheon Bridge, the difference between the normal distribution and the lognormal distribution was the largest, at 64m to 98m. The minimum difference was 10m, which was revealed for Machang Bridge. Accordingly, regarding Incheon Bridge, it was analyzed that it is more appropriate to present a safety width of traffic by assuming a lognormal distribution, rather than suggesting a safety navigation width by assuming a normal distribution. Regarding other bridges, it was analyzed that similar results could be obtained using any of the two distributions, because of the similarity in width between the normal and lognormal distributions. Based on the above results, it is judged that if a safe navigational range is presented, it will contribute to the safe operation of ships as well as the prevention of accidents.