치과임프란트 계면에 대한 전자현미경적 연구 : 제거된 IMZ 임프란트 Retrived IMZ Dental Implant

徐奎源,保坂光雄,安容淳 고려대학교 임프란트 연구소 1999 임프란트연구지 Vol.1 No.1

One of the main research in dental implant science is the histological explanation of the establishment of an interface between tissue and implant materiols. The primary function of a bone-implant interface is to provide safe and effective load transfer from dental implant to Jaw bone, and loosening of this interfacial fixation is the leading cause of dental implant failure. The purpose of this study was to get clinical and histopathological informations of failed IMZ implant removed from the 60 years old male patient at 3 years after implantation. Implant and peri-implant tissue on upper right central incisor area were removed because of radiolucency and mobility. Immediately fixed in phosphate-buffered(PH7.4) 2.5% glutaraldehyde. The specimens were prepared with H-I stain for LM. And for TEM, after post fixation ,specimen were fixed in 1% osmium tetroxide for one hour, followed by dehydration with increasing concentrations of ethyl alcohol and prophylene oxide. Embedding was in Epon 812 and semi-thin section was stained with toluidine blue, thin section with uranyl acetate and lead citrate, and observed, photographed with TEM. The obtained results were as follows: 1. Epitherial downgrowth to the apex of implant was observed. 2. Generally, epithelial width of upper part of implsnt was thicker than lower and epithelial tissue has no digitation form. 3. The loose fibrous connective tissue with inflammatory cells was observed beneath the epithelium. 4. Near the epithelial invagition, in connetive tissue showed inflammatory cells with mast cell.

壁 附着型 自然 換氣 시스템의 性能 分析

장용성,서승직,박효순 대한건축학회 2004 대한건축학회논문집 Vol.20 No.6

A mathematical model of a natural ventilation system by solar chimney effect equipped with south wall was proposed in order to predict its performance under varying climates(summer and winter). Unsteady state heat transfer equations were set up using a energy balanced equation and solved using Gauss-Seidel iteration solution procedure. The ventilation performance of the solar chimney as determined from the air gap, outlet temperature, mass flow rate, ventilation rate according to the system height and instantaneous heat collection efficiency of the solar chimney are examined. As a result, this numerical study shows that system efficiency of winter mode is better than summer mode. Satisfactory correlation was obtained with theoretical and numerical analysis data. Further experimental study is required to establish complete system.

단독주택의 에너지효율 등급설정 및 인증기준(안) 연구

장용성,홍성희,박효순,서승직 대한건축학회 2004 대한건축학회논문집 Vol.20 No.12

This study aimed to make out certification criterion and establishment of the energy efficiency rating of a detached house To this end, we surveyed the energy consumption and plan type of a existing detached house And we also set a reference house throughout a investigation data and developed simple energy analysis software program for a energy performance evaluation of a detached house A energy efficiency rating of a detached house was established by a comparison and analysis of heating energy simulation result according to variation of the U-value of a window and construction, ratio of a window area, setting temperature of a room and air change of rate

취업대비 기사자격증 취득을 위한 효과적 학습지도 방안에 관한 연구

홍순욱,윤상원,서용성 永同大學校 1997 硏究論叢 Vol.3 No.1

지난 2년간 STC를 수행하면서 경험한 바에 의하면, 기사시럼을 준비하기 위하여 시중에서 구입한 연습 문제집에 실린 일부 문제들이 내포한 모호성 때문에 많은 학생들이 어려움을 겪고 있다는 것을 알게 되었다. 이는 학생들이 전공지식을 학습하는데 있어서 비효율을 초래하는 주요 요인들 가운데 하나일 것이다. 본 논문은 학생들이 스스로 자신들의 지식을 확장하고 조직화할 수 있도록 「기출문제 수정출제법(PRST)」이라는 새로운 개념을 도입함으로써 그와 같은 부정적인 효과를 최소화하려는 구체적인 노력을 보여주고 있다. PRST는 5단계로 구성되어 있는데, 이를 통하여 학생들과 지도교수는 모호성을 제거하고 문제를 개선하는 작업을 함께 하게 된다. 이를 위하여 시스템적 접근의 관점에서 Dick의 모형을 채택하는데, 이 모형은 교수설계를 위한 기본틀을 제공해 주며, 본 연구에서 다룰 하나의 기능은 그러한 교수설계 모형 가운데 일부가 된다. 교수설계 모형에 있어서 8개의 기능 가운데, 일련의 개선된 연습 문제들을 제작하는 것이 학생들에게 우선적으로 도움이 될 것이라는 관점에서 수업교재의 개발이라는 기능이 가장 긴급하다고 판단되었다. 본 연구의 목적에 부합하는 적절한 연구의 방향과 범위를 결정하기 위하여 기존 문제들에 대한 사전 조사연구가 수행되었다. 그리고 두 과목에 대한 연습 문제집의 제작과 학생들의 학습 동기부여를 위하여 여름방학 STC기간에 PRST가 시험적으로 적용되었다. 제작된 연습 문제집 가운데 하나가 문제집의 양호도라는 측면에서 6개의 7점 Likert척도로 학생들에 의하여 인지적으로 평가되었다. 그 결과, 새로 구성된 연습 문제집이 기존의 연습 문제집보다 여러 각도에서 더 양호하다고 판정된다. 이것은 통계적 적용상의 한계에도 불구하고, 본 연구에서 제안된 PRST 뿐만 아니라 제작된 연습문제집의 질적 부분의 타당성은 최소한 뒷받침된다는 것을 의미한다고 하겠다. By what we have experienced in STC for the last two years, we can see that a number of students have been suffering from the ambiguities of some problems contained in exercise books which are available at the market for preparing the National Certificate of Engineering. This seems one of the primary factors that bring on inefficiencies in learning expertise. This paper reports our concrete efforts to minimize such a negative force by introducing a new concept of「process for Revise of Sample Test(PRST)」, so that students can be able to organize and expand their knowledge in a good manner. PRST consists of five stages that enable students and the instructor work together on improving problems by getting rid of ambiguities. From the viewpoint of systems approach, Dick's model is adopted to provide a framework for an instructional design which designates a function we deal with in this study. Among the eight functions in the model, the development of class material is considered to be most urgent in that it would be of highly benefit to students to make series of improved exercise problems. Preliminary investigation of existing problems is conducted to figure out right direction and scope for the purpose of our research. PRST is, then, tentatively applied during the summer STC not only to produce exercise books for two different subjects, but to motivate students. One of the produced exercise books is examined perceptively by students in terms of goodness using six seven-point Likert scales. The result shows that the newly constructed exercise book is, on the perception basis, likely to be better than existing books. This implies that the quality of the produced book, as well as the proposed PRST, is validated at least positively in spite of statistical limitation.

最近 日本에 있어서의 人文·社會科學의 硏究動向

金光淳,朴龍喆,徐贊基,李中雨 慶北大學校 東洋文化硏究所 1981 東洋文化硏究 Vol.8 No.-

Since Samkook Era in Korean history the cultural exchange between Korea and Japan has been brought closer together, therefore, the cultural innovations or variations of one country cause sensitive responses of the other. Japan's highly economic growth changed not only her economy and society but also the trends in the sciences. It is certain that such recent trends in science would be affect that of Korean sciences. This study is put the purpose to help determining the directions of human and social sciences in Korea by understanding of their recent trends in Japan. But only literature, law and geography (especially economic and population geography) are treated here among many fields of human and social sciences in Japan. The authors had been to Japan from Feb. 15 to 24, 1981 to collect the data from the relevat institutions or individuals in Japan. The findings on the trends are as follows; (1) In general the recent trend of the literature study in Japan is not so different from the past except the more diverse approaches of the modern literature than the classic. It would seem that the trend of modern literature is moving from chronologic approach to spatial approach. The area of modern literature is closely related with comparative literature but it is impossible to clarify effectively the problems of the modern literature by the only literature study, and it is recent trend to introduce medical knowledges such as a case clinical history, clinical psychology and psychopathology. (2) It would be dominant opinions among Japan's social scientist that social science must be the science of comprehensive recognition, an empirical, practical and historical science. And in future it is desirable to study the law concretely and practically based on the epistemology, formal logic and social dialectic. (3) Economic geography (especially agricultural and industrial geography) is traditionally most important position in geography together with geomorphology in Japan, and recently the studies of commercial geography and regional development become active as the newer fields of economic geography. But it would seem that the attempt to construct the general theory of economic geography has not yet been successful. (4) The study of population geography in 1970s is quantitatively increased in Japan. Its main issue in the early half of 1970s is the underpopulation problem in the rural areas; in the latter half the overpopulation in the metropolitan regions and the return flow from there are most interested problems.

건물의 에너지 효율을 위한 건축적 계획 방법 연구 : 자연실온과 환경 디자인 요소의 상관도 분석을 중심으로 Focused on Correlation Analysis of NART and Environmental Design Factors

장용성,이현수,서승직,박효순 대한건축학회 2005 대한건축학회논문집 Vol.21 No.2

This study intends to deriving the equation of non-airconditioned room temperature(hereafter referred to as NART) prediction from the correlation analysis of the influence of environmental design factors on the building. The relation between the NART and environmental design factors was analysed by using correlation coefficients. The equation of NART prediction was derived from the regression analysis by experimentation and simulation. In this study, the main results are summarized as follows: The average NART of experiment and simulation were evaluated to 22.0℃ and 22.6℃, respectively. An error of simulation was the 2.7%. The results from correlation analysis was con-elated with the daily average outdoor temperature, soil temperature, solar intensity, relative humidity, and air velocity in order. Con-elation coefficients of the daily average outdoor temperature, NART, and peak air conditioning load were over the 0.75. According to the sensitivity analysis of environmental design factors and air conditioning load in reference model, the influence of air infiltration and window surface ratio were more than outside insultion.

뇌파조절을 통한 학습능력 향상의 실증분석연구

윤상원,서용성,홍순욱 永同工科大學校 1996 硏究論叢 Vol.2 No.1

효율적인 STC수행의 기반 연구가 될 수 있는 학습방법론으로서, 뇌파조절이 가해지는 환경하에서 학습효율 향상의 변화정도를 정성적 및 정량적 실험을 실시하였다. 그 결과를 바탕으로 뇌파조절이 학생들의 학습능력에 어느정도 영향을 미치는가에 대해 통계적분석 방법으로 검증하여, 새로운 학습방번론을 모색하고자 한다. 실험분석결과 뇌파조절을 이용한 학습방법은 각 개인의 심리적, 육체적 상태를 개선해 줄 뿐만아니라, 학습효율도 증진시킬 수 있음을 보여 주었으며, 이는 실제 학교수업에 적용가능성이 클 것으로 사료된다. Under the circumstances of brain wave control, qualitative experiments (English word tests, IE subject tests, brain wave measurnments, music effect analysis) and Quantitative experiments (psychological , physical , scholastic evaluation) are executed to examine the level of learning improvements, which are the basic study for special topices course. On the base of the results, we verify the effectiveness of such an educational method for low level students using statistcal analysis and explore a new learning methodolgy. Through this study, we find that learning method using the effects of brain wave control not only makes better the physical and the psychological state of each student, but also advances the learning effectiveness, which is considered to apply a practical teaching extensively.

노인정신장애 평가척도(Psychogeriatric Assessment Scale)의 한국판 표준화 연구

조맹제,박임순,신영민,김무진,정희연,정은기,최용성,조성진,서국희,함봉진 大韓神經精神醫學會 2000 신경정신의학 Vol.39 No.1

연구목적 : 본 연구는 치매와 우울증을 다차원적으로 평가할 수 있는 도구인 Psychogeriatric Assessment Scale(PAS)의 한국판(PAS-K)을 개발하기 위한 것이다. 방 법 : 번역, 역번역, 그리고 세차례의 예비조사를 통하여 PAS-K를 제작하였다. 60세 이상의 노인 291명(임상환자군 : 58명, 지역사회노인군 : 168명, 수용시설 거주자 : 67명)과 그들의 정보제공자들을 대상으로 PAS-K, Geriatric Depression Scale(GDS), Korean version of Mini-Mental State Examination(MMSE-K), Hamilton Rating Scale for Depression(HRSD), 그리고 Hachinski Ischemic Score 를 적용하고, Diagnostic Interview chedule(DIS-Ⅲ-R)을 사용하여 치매와 우울증을 진단하였다. PAS-K의 신뢰도와 타당도를 평가하고, 예민도와 특이도, Kappa값, 그리고 ROC커브 분석법을 이용하여 PAS-K의 6개의 소척도들(피검자면접 : 인지기능 장애척도, 우울척도, 뇌졸중척도, 정보제공자면접 : 인지기능 저하척도, 행동변화척도, 뇌졸중척도)의 최적 절단점을 구하였다. 결 과 : PAS-K는 높은 내적 일관성을 보였고, 검사자간 신뢰도도 만족할 만한 수준이었다. PAS-K의 소척도들을 다른 표준화된 검사도구들과 비교하였을 때 인지기능 장애척도와 인지기능 저하척도는 MMSE-K와, 우울척도는 GDS 및 HRSD와 유의한 상관관계를 보였으며, 뇌졸중척도는 Hachinski Ischemic Score와 통계적으로 의미있는 상관관계를 보였다. 최적절단점은 인지기능 장애척도 10점, 인지기능 저하척도 3점, 우울척도 5점, 피검자면접과 정보제공자 뇌졸중척도 모두 1점, 그리고 행동변화척도 2점으로 추정하였다. 결 론 : 본 연구를 통해 PAS-K의 신뢰도와 타당도가 검증되었고, 노인정신의학 역학연구나 보건분야에서 치매와 우울증의 임상경과관찰 및 일차 선별도구로서 유용하게 사용될 수 있게 되었다. Objectives : This study was designed to develop the Korean version of the Psychogeriatric Assessment Scale(PAS-K), a multidimensional screening tool for the dementia and depression. Methods : Through three times preliminary trials, the authors translated PAS into Korean. The PAS-K, Geriatric Depression Scale, Hamilton Depression Rating Scale, Hachinski Ischemic Scale and Mini-Mental State Examination-Korean version were administered to 291 subjects over the age of 60 and the same number of their informants(67 subjects were institutionalized, 168 subjects were in community, 58 subjects were psychiatric hospital patients). And the Diagnostic Interview Schedule(DSM-Ⅲ-R) was independently administered to exactly diagnose dementia and depression. The reliability and validity test, optimal cut-off point estimation for six each scale and ROC curve analyses were done to investigate the diagnostic validity of PAS-K. Results : Internal consistency and interrater reliability of the PAS-K were high. Concurrent validity of each scales of PAS-K was good in being measured with other standardized scales. The optimal cut-off points of each scale of the PAS-K were estimated as follows : 1) Stroke Scale of subject interview : 1, 2) Cognitive Impairment Scale of subject interview: 10, 3) Depression Scale of subject interview : 5, 4) Stroke Scale of informant interview : 1, 5) Cognitive Decline Scale of informant interview : 3, and 6) Behavioral Change Scale of informant : 2. conclusions : The PAS-K was valid and reliable screening tools for detecting dementia and depression. Therefore the PAS-K could be widely and extensively used in psychogeriatric epidemiological research or clinical setting of primary screening for dementia and depression.

癩 接觸兒童의 末梢血液中 T-淋巴球와 Immunoglobulin의 動態에 관하여

金蘭姬,河龍馬,宋浚榮,徐舜鳳,鄭泰浩 大韓癩學會 1979 癩學 會誌 Vol.12 No.1

Die-upset Nd_(15)Fe_(77)B_8 자석의 자기적 특성에 미치는 제조조건 및 Ga 첨가의 영향

이경섭,김용성,박현순,서수정 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.1

The effects of process parameters and Ga addition on the magnetic properties of die-upset Nd_15Fe_77B_6 magnets were studied. The intrinsic coercivity (_iH_C) was decreased because of grain coarsening by die-upset process. The Remanence (4πM_r) was varied by the extend of crystalline anisotropy. The alignment of c axis depend on the temperature and speed of die-upset process. The coercivity loss by die upsetting was reduced with Ga addition.