두 가족의 가족성 모야모야병 환자 4례

구자성,노재규,박성호,이한보,이용석,윤창호,송치성,송재우 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

관상동맥 스텐트 시술 후의 재협착에 관한 연구

김윤철,이정우,김보영,강정아,임대승,이민수,김정희,성보영,최성준,성인환,전은석 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.1

Coronary stent implacement is known as an effective treatment in the intimal dissection after percutaneous transluminal coronary angioplasty and the prevention of restenosis. However, In-stent restenosis still remains a major concern in clinical stenting. The stents were placed in 103 patients from July 1996 to March 1999 and performed follow-up coronary angiograms in 59(57.3%) patients. To identify the clinical, angiographic and procedurerelated variables 'which predict late restenosis within the stented artery, 59 patients(58.3±9.9, M:F= 41:18) were studied. The clinical characteristics of the patients were stable angina in 23(39.0%), unstable angina in 14(23.7%), acute myocardial infarction in 21(35.6%) and old myocardial infarction in 1(1.7%). Coronary stenting was performed in 1 patient(1.7%) for primary lesion, 50 patients(84.7%) for suboptimal results after PTCA, 6 patients(10.2%) for bail-out procedure, and 2 patients(3.4%) for restenotic lesions. All patients were treated with aspirin and ticlopidinc. The follow-up angiograms were obtained at 7±4 months. The overall in-stent restenosis rate was 27.1%. The coronary angiographic findings were 32 single vessel(54.2%), 19 two vessel(32.2%) and 8 three vessel disease(13.6%). The angiographic morphological characteristics were type A in 33(55.9%), type B in 14(23.7%), type C in 12(20. 3%) cases. Variables of 16 patients with restenosis were compared with those of 43 patients without restenosis. Previously known predictors for in-stent restenosis were multiple stenting, stenting for restenotic lesions, residual stenosis after stenting, stenting for total occlusion lesions, reference diameter, balloon to vessel ratio, acute gain and minimal luminal diameter after procedure, design and characteristics of stents, ostial lesion of aorta, high pressure method for stenting, lesion length, diabetes mellitus, size of artheroma, saphenous vein grafts, ulcerlating lesions and calcified lesions. In this study, Reference diameter before stenting(2.43±0.54mm vs. 2.88±0.65mm, p=0.016) and balloon-to-artery ratio(1.28±0.26 vs. 1.11±0.18, p=0.006) were predictors for in-stent restenosis. 1) The overall in-stent restenosis rate was 27.1%. 2) In the analysis of predictors for in-stent restenosis, there was no significant differences in clinical, angiographic factors between group with restenosis and without restenosis. But, Only reference diameter before stenting and balloon-toartery ratio were predictors of late in-stent restenosis. In conclusion, stenting is effective revascularisation method for selected patients with ischemic heart disease, and to minimize in-stent restenosis rate, stent implanting is achieved in a large vessel on the basis of an artery-to-stnet ration of 1:1, if possible.

임플란트 hexagon 높이에 따른 임플란트와 주위 조직의 응력분포 평가

박성재,김주현,김소연,윤미정,고석민,허중보 대한치과보철학회 2012 대한치과보철학회지 Vol.50 No.1

PURPOSE. To analyze the stress distribution of the implant and its supporting structures through 3D finite elements analysis for implants with different hexagon heights and to make the assessment of the mechanical stability and the effect of the elements. MATERIALS AND METHODS. Infinite elements modeling with CAD data was designed. The modeling was done as follows; an external connection type ∅4.0 mm×11.5 mm OsstemUSII (Osstem Co., Pusan, Korea) implant system was used, the implant was planted in the mandibular first molar region with appropriate prosthetic restoration, the hexagon (implant fixture’s external connection) height of 0.0, 0.7, 1.2, and 1.5 mm were applied. ABAQUS 6.4 (ABAQUS, Inc., Providence, USA) was used to calculate the stress value. The force distribution via color distribution on each experimental group’s implant fixture and titanium screw was studied based on the equivalent stress (von Mises stress). The maximum stress level of each element (crown, implant screw, implant fixture, cortical bone and cancellous bone) was compared. RESULTS. The hexagonal height of the implant with external connection had an influence on the stress distribution of the fixture, screw and upper prosthesis and the surrounding supporting bone. As the hexagon height increased, the stress was well distributed and there was a decrease in the maximum stress value. If the height of the hexagon reached over 1.2 mm, there was no significant influence on the stress distribution. CONCLUSION. For implants with external connections, a hexagon is vital for stress distribution. As the height of the hexagon increased, the more effective stress distribution was observed. 연구 목적: 본 연구는 hexagon 높이에 따른 임플란트 각 부위와 주위 지지조직의 응력분포를 3차원 유한요소 해석을 통해 평가하여 hexagon 높이가 기계적 안정성에 미치는 영향을 평가하고자 시행되었다. 연구 재료 및 방법: 외측 연결 형태의∅L4.0 mm×11.5 mm USII (Osstem Co., Pusan, Korea) 임플란트 시스템을 이용하여 하악 제 1대구치 부위에 임플란트를 식립하여 보철 수복한 경우를 연구 모델로 가정하고 임플란트 고정체의 외측 연결부인 hexagon의 높이를 각각 0.0 mm, 0.7 mm, 1.2 mm, 1.5 mm로 적용한 CAD data를 유한요소 모형화하였다. ABAQUS 6.4 (ABAQUS Inc., Providence, RI, USA)를 이용하여 산출된 응력 값 중에서 등가응력을 기준으로 각 요소(상부 치관, 지대주 나사, 고정체, 치밀골, 해면골)에서 나타나는 최대 응력 값을 비교 하였다. 결과:외측 연결을 갖는 임플란트의 hexagon의 높이는 고정체, 지대주 나사, 상부 보철물 그리고 주위 지지골에 대해 응력 분산에 영향을 주었다. Hexagon의 높이가 증가할 수록 임플란트의 응력 분산은 더 잘 이루어졌으며, 최대 응력 값의 감소를 보였다. Hexagon의 높이가 1.2 mm 이상이 되면 응력 분포에 더 이상 크게 기여하지 않았다. 결론: 외측연결을 갖는 임플란트에서 hexagon은 응력 분산에 필수적인 요소이며 그 높이가 증가할수록 더욱 효과적인 응력의 분산이 나타났다.

中國의 民主化過程에 관한 考察

成基重,徐輔根 慶一大學校 1990 論文集 Vol.6 No.1

This study is to research the process of Democratization in the People's Republic of China. The purpose of the investigation of Democratization in China is to find a model of the democratic campaign in Communist Party States. The early chapters state the historical background of the democratic campaign in China by examining the Ming Fang Campaign in 1957, the Tiananmen Democratic Campaign in April 1976, the Spring of Peiking between 1978 and 1980, the Democratic Campaign between 1985 and 1987, and the 6.4 Tianamen Democratic Campaign. Here we can find that the democratic campaigns were getting serious, at last the 6.4 Tiananmen Democratic Campaign in 1989 was settled with many victims. Part III examines the features of a Socialist Democracy, the differences between a Liberal Democracy and a Socialist Democray, and the relations between a Socialist Democracy and "the Four Modernizations" in China. Part IV researches into the problems of democratization at the people's request in the democratic campaigns and examines Deng, Xiaoping's Policies of "a leftist politics and a rightist economy". Part V seeks for solutions of the democratic campaigns by examining the relations between the Four Modernizations and democratization, and by suggesting political democratization and pluralism for Chinese Democracy. The final part concludes that the problems of the democratic campaign can be solved by political democratization and by "the Four Modernizations" in compliance with the Chinese people's request. This combinnation of political democratization and, "the Four Modernzations" can make the Chinese both more comfortable and more affluent.

감귤 및 오렌지의 소비행태와 선호분석

고성보,강경선,현공남 韓國農業政策學會 1999 농업경영정책연구 Vol.26 No.2

行政의 行爲形式 : 그의 機能과 區別基準을 中心으로 on the center of the function and classification standard

愼保晟 水原大學校 1987 論文集 Vol.5 No.-

It is not constant according to the times how an administrative subject performs the administrative act of a certain contents by a certain form, but, of course, it is very different by means of the political system of a state or the social, economic, and cultural circumstances.

제주시 도로조명 평가 및 시뮬레이션

오성보,김덕구 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2

When fixed-lighting principles and techniques are properly applied, the visibility provided on these public ways can provide economic and social benefits to the public. Fixed lighting of public ways for both vehicles and pedestrians can create a nighttime environment in which people can see comfortably and can quickly and accurately identify objects on the roadway being travelled. Roadway lighting can improve traffic safety, achieve efficient traffic movement and promote the general use of the facility during darkness. This paper describes estimation of horizontal illuminance by actual measurement at main streets in Jejusi. We try to evaluate Jejusi Roadway Lighting Conditions for modeling by computer simulation.

건물 산란계수를 이용한 비가시거리 영역에서의 전파환경

홍성욱,강부식,김흥수 濟州大學校 産業技術硏究所 1997 산업기술연구소논문집 Vol.8 No.1

In this paper, the scattered electric fields is computed to predict the shielding zone by analysing the effect of the reflected azimuth anlge at the building, and considering the path differences at observation point between the rays from origin and any point in the building. The scattering coefficients. which are applicable to the prediction of shielding zone. are computed and compared with measured one. We found that the scattering power become weak over 10 degree of the azimuth angle at which the scattering coefficient is lower than 40 dB. From this, the shielding zone can be estimated.

道德的 自我의 '自己決定性'과 '相互主觀性' 間의 緊張과 人間敎育의 課題

심성보 고려대학교 교육문제 연구소 1995 敎育問題硏究 Vol.7 No.-

We are focusing on the current debates between self-detdrmination and intersubjectivity of moral delf. The formal is inclined to enccourage to judge and choose things 'for themselves' distancing the situation. The latter is inclined to believe that the self is 'embedded' or 'situated' in existing social pratices. Liberals argue that any particular way of life restricts peopl's self-determination. Country to liberals, communitarians argue that liberal unencumbered self is 'empty'. We have to get rightly through over the uncompletedness of liberal self and the rightity of communtarian self. After summing up briefly the emergence and development of self, we will think out the thick tension between the 'self-determination' and 'intersubjectivity' of moral self. We are to hold the open-texturedness of conflicting concepts of both selves. The most profound problem through the debates between self-determination and intersubjetivity of moral self, that education poses for any pluralistic society with democratic aspirations is how to reconcile individual freedom and civic virtue. Children should be educated to balance both individual freedom and civic virtue.

行政節次의 法典化 : 우리 나라의 行政節次法案을 보고서 in view of the Administrative Procedure Bill

愼保晟 水原大學校 1988 論文集 Vol.6 No.-

The administrative procedure, as a central means of administrative process, can be said to be a procedure of the administrative activeties as an administrative authority motion. The administrative procedure seems to cause an unnecessary chasge to the administration, to be inefficient, and, as a result, to have difficulty in the administrative object performance, in the society with the tradition of European continent bureaucratic states. But in brief, it has an ideological and systematic meaning with administrative democratization as the central idea. But in brief, it has an ideological and systematic meaning with administrative democratization as the central idea. The development of it is on the ideological basis of both the principle of the natural justice in British Law and the American due process of law, in the world of British and American common law. But in European continent, before the Second World War, general administrative procedure laws were enacted and driven with a view to the strengthening of constitution administration, to promoting the efficiency of administrative management, and to expanding the relief of rights in many states, such as Austria, etc, from 1920's on, and often the Second World war, West Germany is successful in the epoch-making institutionalization of administrative procedure. Our government previously notified the enactment of the administrative procedure bill one years ago, but doesn't confirm it yet, for it seems to have many items to study and examine. During the period, the public hearing was held, and the criticism and the criticism and examination by some scholars was announced. This thesis is to study various problems of the administrative procedure bill by making a comparative study of foreign examples, and to intend helping to enact it to some extent.