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Jung Ryeol An(安重烈),Tae Woo Chang(張泰雨) 대한자원환경지질학회 1991 자원환경지질 Vol.24 No.3
The study area is mainly composed of metasedimentary rocks which are included in Ogchon, Choson and Pyongan Groups. Because of thrust faults which are developed in this area, a coal bearing formation is repeatedly distributed two times, and Choson Group is thrusted over Pyongan Group. Deformation in this area was taken place in a series of three phases ((D₁, D₂ and D₃) ; D₁ was most intense whereas D₃ was weakest. Thrust faults developed in the upper curst during D₂ produced cataclastic rocks and fault breccia, truncating regional slaty cleavage and earlier folds which were formed during D₁ stage. The quartz microstructures of metapsammitic rocks in Choson and Pyongan Groups suggest that dislocation creep mechanism predominated early in fabric development, afterwards deformation mechanism was transfered to pressure solution which intensified the earlier fabrics. According to strain analysis using quartz grains and quartz aggregate grains, the strain magnitude(Es) of Pyongan Group represents larger values than that of Choson Group due to the contrast of constituent minerals, the size of original quartz grains and matrix content. Apparent flattening type in strain pattern appears in the whole area. It is suggested that the relationship between Ogchon Group and Choson Group may be thrust contact.
Structural Geology in the Western Pou˘n Coafield
AN, Jung Ryeol 慶北大學校 自然科學大學 地質學科 地質學硏究會 1989 伏賢地質 Vol.- No.11
The study area is mainly composed of metasedimentary rocks which are included in Okch'o˘n, choso˘n and P'yongan Group. Because of thrust faults which are developed in this area, coal bearing formation is repeatedly distributed two times, and these put Choso˘n Group on P'young Group. Deformation in this area was taken place through a series of three phases (D_l, D_2, _3), D_1 was most intense, weakened D_2, D_3 in order. Thrust faults developed in the upper crust during D_2 produced cataclastic rocks and fault breccia, truncated regional salty cleavage and earlier folds which were formed during D_l stage. The microstructures of metapsammitic rocks suggest that dislocation creep predominated early in fabric development, afterwards deformation mechanism was changed to pressure solution which intensified the earlier fabrics. According to strain analysis using quartz grains and quartz aggregate grains strain magnitude (Es) of P'yongan Group represents larger values than that of Choso˘n Group, and that of P'youngan Group increase gradually toward left margin. Apparent flattening type in strain pattern appears in the whole area. It is suggested that contact between Okch'o˘n Group and Choso˘n Group is thrust fault.
사용자 중심의 웹사이트 구축을 위한 주요 평가요인에 관한 실증 연구 : 과학관련 사이트를 중심으로
한광현,안중열,김미량 한국컴퓨터교육학회 2004 컴퓨터교육학회 논문지 Vol.7 No.3
7차 교육과정이후 ICT는 중고등학교 수업에서 교육효과 제고를 위한 중요한 도구로 등장하였다. 이러한 맥락에서 본 연구는 중고등학교 학생들의 과학학습에 도움을 줄 수 있는 웹사이트에 대한 평가요소를 분석해 보고자 한다. 여러 과학관련 웹사이트를 방문하고 이를 평가한 학생들의 설문 결과를 토대로 하여 공분산구조모형을 구축하고, 모형을 토대로 하여 어떤 요인들이 학습자의 만족에 영향을 미치는지를 확인해 보고자 하였다. 그 결과, 과학학습의 경우 학습자의 웹 사이트의 사용자 만족에 가장 큰 영향을 미치는 요인은 신뢰성과 이해성/흥미유발과 관련된 요인으로 나타났으며, 제시방식이나 화면구성, 학습내용은 이들의 선행요인으로 고려되어야 함을 알 수 있었다. 또한 접속성이나 학습내용 자체는 만족도에 대한 직접 영향요인으로 작용하지 않는 것을 알 수 있었다. Since the 7th National Curriculum was established, ICT has emerged as an indispensable tool for teaching a variety of subjects in K-12 education systems. This paper develops the model for explaining the factors affecting students' satisfaction level in using web contents for science class. Based on data collected from a questionnaire survey from the students who evaluated the web sites providing the information related to the science subject, the structural equation model is presented. From this model, a following conclusion is provided : credibility and understandability/motivation are the most important factors affecting the level of satisfaction, but the presentation method, the screen design as well as contents itself has indirect impact on user satisfaction through understandability/motivation. Other interesting results are also provided. This result might provide the useful guidelines for designing the web-contents for science class in high school.
선희식(Hee Sik Sun),김부성(Boo Sung Kim),정인식(In Sik Chung),한준열(Joon Yeol Han),채현석(Hyun Suk Chae),최재경(Jae Kyung Choi),박수헌(Soo Heon Park),정일건(Il Gun Chung),안중현(Joong Hyun Ahn),정규원(Kyu Weon chung) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.5
Lipoma of the upper gastrointestinal tract is a rare benign tumor. Usually lipomas look like submucosal tumor with yellow, smooth surface. We present 2 cases of gastric lipoma and duodenal lipma with review of literatures. These were diagnosed by means of the fibroptic endoscopy. The gastric lipoma is located in the anterior wall of antrum and causes intermittent gastric outlet obstruction. The duodenal lipoma is located in the greater curvature of duodenal bulb. Those lesions were successfully removed by endoscopic polypectomy without complications.