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이근,엄유정,정의원,김창성,최성호,조규성,채중규,Lee, Geun,Um, Yoo-Jung,Jung, Ui-Won,Kim, Chang-Sung,Choi, Seong-Ho,Cho, Kyoo-Sung,Chai, Jung-Kiu 대한치주과학회 2009 Journal of Periodontal & Implant Science Vol.39 No.4
Purpose: The presented study aims to evaluate the effects of osteoporosis on dental implants by analyzing a 12-year cumulative survival rate of implants placed in patients with osteoporosis. Methods: 37 patients with history of osteoporosis were selected from a pool of dental implant patients treated at the Department of Periodontology in Yonsei University Hospital between 1993 and 2007. The cumulative survival rate is quantified using data collected from 164 placed implants in the selected 37 patients. Results: 3 out of the 164 implants failed and the cumulative survival rate was observed at 95.1%. The survival rates of the implants according to patients' age were 97.41% (<60) and 100% ($60\leq$). The lower survival rate was directly proportional to younger age, and this relationship is statistically significant (P<0.05). The survival rates of implants according to diagnostic criteria were 95.45% (osteopenia) and 98.59% (osteoporosis; 2 out of 142 implants placed in osteoporosis patients failed). The difference in the two survival rates is statistically significant (P<0.05). The survival rates according to the region of implants do not have statistically significant difference. The survival rates according to the different length and diameter of the implants do not have statistically significant difference. The survival rates of implants accompanied and not accompanied by bone augmentation were 92.11% and 100%, respectively. The difference in the two survival rates is statistically significant (P<0.05). The survival rates of implants placed in patients with and without history of medication for osteoporosis treatment are 96.67% and 99.04%, respectively. The difference in the two survival rates is statistically significant (P<0.05). Conclusions: A high cumulative survival rate of dental implants, similar to one found in non-osteoporosis patients, is observed in osteoporosis patients, indicating the possibility that placing dental implants on patients with osteoporosis can be considered with high treatment predictability.
정부 및 공공기관의 BIM적용 사례 분석 및 발주기관을 위한 BIM기반 철도인프라 정보관리체계 개발 연구
이근일(Lee Geun Il),박정준(Park Jung Jun),최형래(Choi Hyung lae),신민호(Shin Min Ho) 한국BIM학회 2018 KIBIM Magazine Vol.8 No.1
Domestic and foreign software components are rapidly developing continuously. However, the government’s plan to activate BIM remains relatively sluggish. In particular, BIM based information management systems have been developed to enable the development of degraded railway industries in infrastructure BIM based areas. For this purpose, we analyzed domestic and oversea policies and guidelines. We conducted a survey on the personnel of the railroad corporation. Based on the survey result, the elements applicable to BIM were reflected in the system.
이근만 ( Keun Man Lee ),임현철 ( Hyun Chul Lim ),김지현 ( Jie Hyun Kim ),윤영훈 ( Young Hoon Yoon ),박효진 ( Hyo Jin Park ),이상인 ( Sang In Lee ) 대한소화기학회 2010 대한소화기학회지 Vol.56 No.5
Background/Aims: We aimed to determine the concordance rate and clinical predictors of eosinophilic esophagitis (EoE) in patients with endoscopically suspected eosinophilic esophagitis (ESEoE) findings. Methods: From June 2006 to December 2009 in Gangnam Severance Hospital, we prospectively enrolled the patients of endoscopically suspected eosinophilic esophagitis (ESEoE), and then we retrospectively reviewed and analyzed clinical features and endoscopic findings. Results: We found 17 patients of ESEoE, and 5 of them were finally confirmed as an EoE by histology (diagnostic concordance rate 29.4%). We added two more patients previously diagnosed as EoE and compared patients of EoE+ (n=7) with EoE- (n=12). Mean age was 56.0 (range 36-70) and 51.0 (range 36-68) years old, respectively. In EoE+ group, there were 5 males and 2 females and 6 males and 6 females in EoE- group. The symptoms of EoE+ patients were dysphagia (n=5), food impaction (n=3), foreign body sensation in esophagus (n=2), chest pain (n=1), and heartburn (n=1). EoE- patients complained food impaction (n=5), heartburn (n=4), chest pain (n=2), foreign body sensation in esophagus (n=2), and dysphagia (n=1). The endoscopic findings of EoE+ patients were furrows (n=6), rings (n=5), exudates or nodules (n=3), and friability (n=1). EoE- patients showed rings (n=10) and furrows(n=7). Univariative analysis showed that `a symptom of dysphagia`, `presence of exudates or nodules`, `more than 2 suggestive endoscopic findings` were significantly different between two groups. Conclusions: In ESEoE, diagnostic concordance rate was 29.4%. In addition, `symptom of dysphagia`, `exudates or nodules`, `≥2 endoscopic findings` are more suggestive of EoE in ESEoE patients. (Korean J Gastroenterol 2010;56:285-292)
유도선수(柔道選手)의 체력변화(體力變化) 추이(推移)에 관(關)한 연구(硏究) -국가태표급(國家代表級) 선수(選手)를 중심(中心)으로-
이근일 ( Keun Il Lee ),이웅기 ( Woong Ki Lee ) 건국대학교 교육연구소 1991 교사와 교육(구 교육논집) Vol.15 No.-
The purpose of this study was to analyze transformation of physical fitness in Korean Male Judo National-Class Representatives for 5 years, 1986~1990, and to contribute consequent data for predicting the changeful state of physical fitness m the meantime with national-class representatives, and to provide the critical data for chooing new figures m rank-holding Judo experts and furthermore for scientific training programs The results of this article with pointing out the structure and the function of physical fitness were summarized as follows ; 1. Structure There were not significant differences among the items, but it was found that only Chest Girth is different m weight class of -64, -71, -86, and -95Kg 2. Function There were something to differ from, Shuttle Run in - 65Kg, Trunk Flextion and Rolling in -78Kg, Stand Long Jump and Rolling in -86Kg respectively, but the other Items have no distingushed difference
이근,Lee, Geun 한국건강관리협회 1987 건강소식 Vol.11 No.1
기침이나 콧물은 겨울철의 자연 현상쯤으로 생각하고 더구나 감기 정도는 겁내지 말고 그보다는 아기가 여러가지를 경험하고 새로운 것에 접할 수 있도록 유도하는 것이 현명하다.
조명가시화 시뮬레이션에 적용되는 최신 3D 렌더링 기술의 비교연구
이근일(Lee Kun-Il),송규동(Song Kyoo-Dong) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The purpose of this study was to review the recent 3D graphic rendering techniques that can be used as the lighting visualization simulation tool with a 3D Studio MAX's plug-in renderer. This paper presents photorealistic rendering algorithm the embodies accurate image. In the test rendering simulation, a single prism panel was used to see the prism panel's caustic phenomenon for a directional lights. Based on our comparison, this paper verifies a possibility of the graphic renderers as a lighting simulation tool.