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전병규(Jeon, Byungkyu),전석원(Jeon, Seokwon) 한국구조물진단유지관리학회 2010 한국구조물진단학회 학술발표회논문집 Vol.2010 No.2
Blasting demolition is getting unrare for removing or renovating old buildings with advantages when applied especially to multi-story structures. But this method required skillful technology about controlling explosives and the safety of the unexpected behavior of the structures. Numerical simulation is useful to predict the collapsing behavior of a structure before demolition. In this study, a numerical simulation technique was carried out using three-dimensional FE analysis by LS-DYNA. In order to reduce the computational time, the total number of elements was minimized, and rebar arrangement in concrete were simplified. The constitutive material models and other numerical techniques were applied. The results of the simulation were compared with the real demolition practice in behavioral aspects, and major issues in the numerical model are presented.
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국내 고준위 방사성 폐기물 심부시추공 처분을 위한 개념 연구
전병규(Byungkyu Jeon),최승범(Seungbeom Choi),이수득(Sudeuk Lee),전석원(Seokwon Jeon) 한국암반공학회 2019 터널과지하공간 Vol.29 No.2
우리나라는 1978년 4월 고리1호기를 시작으로 지금까지 총 24기의 원전을 가동하고 있으며 2기의 원전이 건설 중이다. 원자력 발전이 지속됨에 따라 원자력발전소에서 발생하는 방사성 폐기물의 양도 늘어나게 되어 이를 영구처분하기 위한 다양한 방법이 제안되어 왔다. 국내에서는 심층처분(DGD)을 중심으로 연구가 진행되어 왔으나 심부 시추공을 활용하는 심부시추공 처분(DBD) 역시 대안으로 고려할 필요가 있다. 본 논문에서는 기술 선진국의 선행 연구결과를 종합하여 심부시추공 처분에 요구되는 요소기술들을 소개하고 이를 국내에 적용하기 위한 적용성 평가를 수행하였다. 시추공 설계, 처분부지 등에 대한 개념적 연구를 수행하였으며 마지막으로 실제 처분을 위하여 향후 요구되는 기술적 과제에 대하여 정리하였다. With Kori nuclear power plant unit 1 as a beginning in April 1978, 24 nuclear power plants have been operated in Korea and two more plants are under construction. As the nuclear power plants being operated, radioactive wastes from the plants have been accumulated so that various methods for disposing them have been proposed. In Korea, researches have been conducted, being focused on DGD (Deep Geological Disposal), however, DBD (Deep Borehole Disposal) method needs considering as an alternative. In this technical note, element technologies for DBD were analyzed by compiling previous researches and their applicability on domestic cases were investigated. Conceptual studies regarding relevant designs were conducted and finally, technical challenges for actual disposal were described.
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전병규 ( Jeon Byungkyu ),전석원 ( Jeon Seokwon ) 한국구조물진단유지관리공학회 2010 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.14 No.2
Blasting demolition is getting unrare for removing or renovating old buildings with advantages when applied especially to multi-story structures. But this method required skillful technology about controlling explosives and the safety of the unexpected behavior of the structures. Numerical simulation is useful to predict the collapsing behavior of a structure before demolition. In this study, a numerical simulation technique was carried out using three-dimensional FE analysis by LS-DYNA. In order to reduce the computational time, the total number of elements was minimized, and rebar arrangement in concrete were simplified. The constitutive material models and other numerical techniques were applied. The results of the simulation were compared with the real demolition practice in behavioral aspects, and major issues in the numerical model are presented.
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내용 통합 텍스트 읽기를 위한 초등 영어 어휘 지도 전략에 대한 연구
김혜리(Kim Haeri),전병규(Jeon ByungKyu),강영옥(Kang YungOk),김은하(Kim, EunHa) 팬코리아영어교육학회(구 영남영어교육학회) 2012 영어교육연구 Vol.24 No.4
This study investigated the effects of vocabulary teaching strategies while reading content-based informational text in primary English classes. Both quantitative and qualitative data were collected, and the data analysis yielded four major findings. First, the quantitative data analysis showed that there was no one particular strategy that fit all learning situations. However, from qualitative analysis, the study found that students Preferred application strategy to list strategy and could transfer inference strategy in learning words from other texts. Second, effective vocabulary teaching strategies were different according to the characteristics of the texts and types of words in the text. Third, there were different learning transfer effects according to word types. For example, there was significant learning transfer effect with compound and loan words, whereas less transfer effect with collocation. Last, there were learning differences according to students’ English level. Based on the conclusions, suggestions were made for follow-up studies.
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