교합면에 형성된 offset groove가 금관 및 지대치의 응력 발생에 미치는 영향

오세윤,김기환,유진호 高麗大學校 倂設 保健大學 保健科學硏究所 1998 保建科學硏究論集 Vol.7 No.2

When an offset groove is formed on the occlusal surface of abutment tooth, resistance to movement and deformation of the cast crown will increase because of the increase in the metal thickness and anchoraging effect provided by the offset In an attempt to increase the resistance of the cast crown, a tooth preparation method with an occlusal offset of 1.2㎜ width, 2.0㎜ length and two different depths of 0.5㎜ or 1.0㎜ was newly designed by authors. 20kg load was applied', vertically on the occlusal surface, 45˚ obliquely on the central fossa area and 45˚ obliquely on the buccal cusp surface of buccal cusp tip. To evaluate the possible clinical use of this new method, von Mises maximum stress values developed in the crown and Maximum Principal values developed in the abutment tooth, which were obtained with two dimensional finite element analysis, were compared with that in the conventional method which had no occlusal offset groove. The obtained results were as follows, 1. The stress distribution effect of the occlusal offset varied according to the direction of the forces applied. 2. The depth of occlusal groove seemed to have no significant influence on the stress distribution effect. 3. When a vertically directed forces were applied on the buccal cusp tip and on the central fossa area of the occlusal surface, von Mises maximum stress values developed in the offset formed gold crown and Maximum Principal stress values in the offset grooved tooth were both decreased and the amount of decreased value in the gold crown was much more noticeable than that in the tooth. 4. When an obliquely directed forces were applied on the central fossa area of occlusal surface, regardless of offset forming, von Mises stress values developed in the crown and Maximum Principal stress values in the tooth were almost identical in all cases. 5. When an obliquely directed forces were applied on the buccal surface of buccal cusp tip area, von Mises stress values in the offset formed crown were somewhat decreased, while Maximum Principal values in the offset grooved tooth were somewhat increased. 6. Considering the occlusal scheme in the natural dentition, occlusal offset seemed to have an advantageous effect on the stress distribution, both in the cast gold crown and in the abutment tooth.

군용물체탐지 연구를 위한 가상 이미지 데이터 생성

오세윤,양훈민 한국군사과학기술학회 2023 한국군사과학기술학회지 Vol.26 No.6

. This research paper investigates the effectiveness of using computer graphics(CG) based synthetic data for deep learning in military vehicle detection. In particular, we explore the use of synthetic image generation techniques to train deep neural networks for object detection tasks. Our approach involves the generation of a large dataset of synthetic images of military vehicles, which is then used to train a deep learning model. The resulting model is then evaluated on real-world images to measure its effectiveness. Our experimental results show that synthetic training data alone can achieve effective results in object detection. Our findings demonstrate the potential of CG-based synthetic data for deep learning and suggest its value as a tool for training models in a variety of applications, including military vehicle detection

공감의 조건과 공감 자체가 친사회적행동에 미치는 영향

오세윤 호남대학교 인문사회과학연구소 2013 인문사회과학연구 Vol.41 No.-

사회적으로 친사회적 행동이 부족한 상황에서, 감성을 넘어 공감의 중요성이 강조되는 것은 의미 있어 보인다. 본 연구는 공감의 조건과 공감 그 자체가 친사회적 행동에 미치는 영향을 검증함으로써 공감에 관한 여러 학자들의 논의를 점검해보고 이로부터 얻을 수 있는 정책적·교육적 시사점을 찾아보고자 하였다. 수립된 7개의 가설 중 6개의 가설이 검증되었다. 이는 공감에 관한 학자들의 주장이 의미 있다는 말이다. 사회적으로 드러나는 청소년 따돌림과 자살, 노인자살, 매일같이 불거지는 각종 사회 부조리, 부정, 불법행위 등이 공감부족이라는 단일 원인에 의해 유발될 가능성이 크다. 오직 이성에만 의존하여 대응책을 마련하는 관행이 크게 바뀌어야 한다. 말하자면 잘못한 학생을 벌주고, 정학시키고, 퇴학시키고 하던 관행을 고쳐야 하는 것이다. 사회적으로 상당한 비용이 들더라도, 이들이 공감의 기쁨을 맛보는 요령을 터득하게 하기 위해 기존 교육과정에 큰 수정을 가해야 한다. 부부교육, 부모교육, 사회봉사, SNS를 통한 홍보 등 평생교육 방식을 활용하여 전 국민에 대한 공감교육이 요청된다. Every day, we hear gloomy news such as juvenile suicide and bullying, senile suicide, and wrongdoing by public officials. On this juncture, empathy is becoming increasingly popular. I suppose that all of the gloomy news of juvenile, senile, and official's unuseful behaviors have the same cause, deficit of empathy. The subject of this study, the effect of conditions of empathy and empathy itself on pro-social behavior, comes from this supposition. To check whether my idea is right or not, I made a structural equation model. As independent variables, belongings, reverence, trust, and empathy are accepted, and as dependent variable pro-social behavior is accepted. Among the seven, six hypotheses have been tested statistically significant at 5% significance level. This suggests that my prior theoretical discussions, from which the seven hypotheses were induced, are meaningful and right. Some implications for theory, policy, and education have been suggested. So many countermeasures for social problems, which are based on reason but discard empathy and emotions, cure only a few problems and wrong-doings. Only half of the subjects empathize. Empathy education for most people is necessary. The more people empathize, the happier they will be.

IT R&D 전주기 성과관리 방안에 관한 연구

오세윤,송찬호,김상헌 한국경영정보학회 2008 한국경영정보학회 학술대회논문집 Vol.2008 No.-

효제 동문

오세윤 문예운동사 2015 수필시대 Vol.10 No.-

VR · AR 기술을 활용한 사회문제 해결 기술개발 동향

오세윤 한국통신학회 2020 정보와 통신 Vol.37 No.10

실감콘텐츠는 디지털콘텐츠에 실감 기술을 적용하여 인간의 오감 자극을 통해 정보를 제공하는 등 실제와 유사한 체험 및 현실감을 가능하게 하는 콘텐츠이다. 실감콘텐츠는 몰입감, 상호작용, 지능화 등의 특징을 통해 높은 현실감을 제공하고, 대표적인 실감콘텐츠로는 가상현실(VR), 증강현실(AR), 혼합현실(MR), 홀로그램(Hologram) 등이 부각되고 있다. 이러한 실감콘텐츠는 몰입감과 사실감을 극대화한 콘텐츠 자체의 고도화와 더불어 他 산업과의 융합 및 디지털 환경에서의 생활 방식의 변화를 주도하고 있으며, 최근 코로나19의 비대면 방식으로의 변화에 따라 산업간 융합 및 변화가 급속도로 진행되고 있는 상황이다. VR · AR 기술은 전통적인 제조, 국방, 교육분야를 넘어 의료 · 복지 분야 등으로의 확장을 거듭하고 있으며 이를 활용한 사회문제 해결에도 활용되고 있다.

SERVQUAL척도를 활용한 행정서비스 만족도 평가

오세윤 한국정책분석평가학회 2000 政策分析評價學會報 Vol.10 No.2

실험설계법 기반 무미익 형상 비행체 풍동실험 연구

오세윤,이종건,김성철 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.11

본 연구에서는 무미익 항공기 형상의 풍동실험에 적용한 실험설계법 접근법에 대한 연구를 수행하였다. 풍동실험은 실험설계법 기반 풍동실험연구의 일환으로 국방과학연구소 저속 풍동실험실에서 수행되었으며, 이러한 풍동실험연구에 적용한 실험설계법 기반 접근법은 실험효율성을 크게 증가 킬 수 있는 것으로 확인되었다.. This paper investigates the use of design of experiments (DOE) approach to wind tunnel testing of a tailless flight vehicle. The wind tunnel testing was conducted at the Agency for Defense Development’s Low Speed Wind Tunnel (ADD-LSWT) as part of series of tests using the DOE. The application of the DOE to the design of wind tunnel tests can result in a significant increase in test efficiency.

Formocresol과 水酸化 Calcium 및 Glutaraldehyde가 切斷施術된 齒髓에 미치는 影響에 關한 實驗的 硏究

吳世潤,韓澤善 고려대학교 의과대학 1984 고려대 의대 잡지 Vol.21 No.1

This experimental study was performed to compare the effects of formocresol, calcium hydroxide and glutaraldehyde on the vitally amputated pulp tissues. 8 premolars of each sample, total of 64 from 8 young sound dogs were pulpotomized with one of the following 8 different methods. i.e., 5 minutes application of formocresol on the amputated pulp surface and capping with zinc oxide eugenol paste mixed with formocresol, 5 minutes application of formocresol and capping with calcium hydroxide mixed with or without formocresol, 4 days application of formocresol and capping with either zinc oxide eugenol paste or calcium hydroxide, direct capping with calcium hydroxide only or calcium hydroxide mixed with formocresol, and 5 minutes application of 2% glutaraldehyde and capping with calcium hydroxide mixed with 2% glutaraldehyde. 3 dogs were sacrificed 3 weeks later and the other 5 were sacrificed 200 day later respectively, and all the pulpotomized teeth were prepared for histological findings. The obtained results were as follows; 1. In the pulp tissues that were treated with formocresol and capped with zinc oxide engenol mixed with or without formocresol, no dentin bridge was observed and inflammatory response seemed to progress deeper leading to necrosis of the pulp sooner or later. 2. In the pulp tissues that were treated with formocresol for 5 minutes and capped with calcium hydroxide mixed with or without formocresol, or directly capped with calcium hydroxide mixed with formocresol, relatively mild inflammatory reaction was observed with complete dentin bridge formation and the vitality of the remaining pulp tissues appeared to be slightly degenerated. 3. In the pulp tissues that were treated with formocresol for 4 days, generally degenerative and destructive change was severer than in the ones that were treated for 5 minutes. 4. In the pulp tissues that were capped with calcium hydroxide, more favorable tissue reaction was observed when used with formocresol than in the ones where formocresol was not used. 5. In the pulp tissues that were treated with 2% glutaraldehyde and capped with calcium hydroxide mixed with 2% glutaraldehyde instead of formocresol, generally compact dentin bridge was formed and the vitality of the remaining pulp tissues was preserved for a long time relatively with less inflammatory response. 6. In the early stage of osseous structure formation, it appeared relatively spongeous structure showing many spaces, forming tunnels between capping material and the remaining pulp. In the favorable cases, the space was more rapidly closed and dentin bridge was densely added along the lower border of osseous structure covering the remaining pulp, on the other hand, as the formation of dense dentin bridge was retarded, it was more spacious and thus the inflammatory stimulus penetrating deeper and destroying the remaining pulp more severely. 7. The vitality of remaining pulp tissue, pulpotomized with most of the usual methods, seemed to be declined so the author suppose that further more improved method would be necessary.

장애인시설 탈시설화의 문제점과 개선방안에 관한 연구

오세윤,홍기원 서울행정학회 2009 서울행정학회 학술대회 발표논문집 Vol.- No.-