Cd/Te 몰분율에 따라 MOVPE 법으로 성장된 HgCdTe 박막의 특성

서대원,Lanh, Ngoc-Tu,김창경,서상희,김병국,김진상 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

인터넷 활용과 사회자본 : 사이버 공동체의 사회자본 형성 가능성을 중심으로 The Possibility of Formulating the Social Capital in Virtual Community

서진완,박희봉 한국정책학회 2003 韓國政策學會報 Vol.12 No.1

사회자본에 대한 기존의 논의는 오프라인 상에서 전통적인 지역사회와 참여, 그리고 의사소통의 수단 하에서 이루어졌다. 그러나 새로운 인터넷 환경 하에서 사람들은 온라인 상에서 사람들과 대화하고 관계를 형성하며 새로운 공동체를 구성함으로서 이전에 전혀 경험하지 못했던 환경이 조성되고 있다. 따라서 이 연구에서는 정보화사회에서 새로운 형태의 의사소통수단이 발달하면서 사람들과의 관계는 어떻게 이루어지고 있으며 참여 그리고 지역사회에 대한 관여가 어떻게 달라지고 있는지에 대하여 초점을 두고 있다. 정보통신기술과 사회자본은 어떠한 관계가 있는지를 경험적으로 분석한 연구의 결과는 새로운 인간관계의 형성과 변화, 확대, 그에 따른 사회자본의 형성과정의 변화를 인터넷이 가져올 수 있다는 사실을 밝히고 있는 한편, 가상공간을 통한 인간관계가 새로운 사회자본을 형성 및 증가시킬 경우에는 전통적인 사회자본 연구방향이 달라질 수 있다는 점을 제시하고 있다. Most issues of social capital have been discussed in the traditional off-line environment. With the rapid development and diffusion of information and communication technology, the use of internet is widely disseminated in the community and as a result, people have the chance to communicate together, develop their relationship, and constitute the newly internet-based community which have never been experienced before. In this regard, it if interesting topics to discuss how they communicate among themselves through the internet and they are involved in the online environment. This study is to raise and explore the relationship between the information and communication technology and the social capital. The results based on survey data show that internet is highly correlated with the formulation of the social capital in virtual community, And also it is suggested that the use of internet can produce the change in formulating process of social capital.

대구지역 고등학생들의 흡연실태 및 니코틴 의존도

서영숙,윤희정,권진희,이성국 韓國學校保健學會 2003 韓國學校保健學會誌 Vol.16 No.1

The purpose of this study was to surveyed the smoking status and pattern, nicotine dependence and factors associated with smoking and nicotine dependence for high school students in Daegu. In March. 2000, 1,593 students from 7 male and 6 female high schools located in Taegu were assessed with self-completing questionnaire. The major findings were as follows; Percentage of male smokers was 15.0% in general high school, 30.9% in business high school and that of female smokers was 5.0% in whole woman's high school. The median score of FTQ was 4.0 among male smokers and female smokers. the mean of FTQ score was 4.07±1.96 in male and 3.94±1.63 in female. Percentage of students with high FTQ score(FTQ≥7) was 13.3% in male and 5.9% in female. In multiple logistic regression analysis, smoking had significant association with general characteristics such as personal-specifics factors, family environment factors and school environment factors. In multiple logistic regression analysis, nicotine dependence had significant association with school-age and duration of smoking. On consideration of above findings, to prevent students from smoking and to reduce the smoking rate, we have to try together in house, school and society.

DTC를 이용한 새로운 파라메터 추출법

서용진,신희갑,이철인,장의구 중앙대학교 기술과학연구소 1994 기술과학연구소 논문집 Vol.24 No.-

In the manufacturing of VLSI circuits, variations of device characteristics due to the slight differences in process parameters drastically aggravate the performances of fabricated devices. Therefore, it is very important to establish optimal process conditions in order to minimize device sensitivities. In this paper, we used one-dimensional process simulator, SUPREM-Ⅱ, and two-dimensional device simulator, MINIMOS 4.0 in order to extract optimal process parameter which can minimize changes of the device characteristics caused by process parameter variation in the case of short channel nMOSFET and pMOSFET device. From this simulation, we have derived the dependence relationship between process parameters and device characteristics. Here, we have presented a method to extract process parameters from design trend curve(DTC)obtained by process and device simulations.

내진을 고려한 수평형 원심펌프의 구조해석에 관한 연구

서영수,정희택,권진회 경상대학교 생산기술연구소 2003 工學硏究院論文集 Vol.19 No.-

The rotating machinery such as the centrifugal pump related to the safety in nuclear power plants have to evaluate their structural integrity and operability through the experimental test, computational analysis or the combination of the test and the analysis. The paper presented is currently aimed at the computational analysis of the designed nuclear pump in the sense of the structural integrity and operability for the centrifugal machinery pump. The commercial finite element analysis program(MSC/NASTRAN)was available to perform the static analysis on the horizontal centrifugal pump installed on the gas stripper system. The numerical results are analysed with respect to the natural frequency, nozzle loads as well as seismic loads, and also the shaft critical analysis along with evaluation of deflection are verified to ensure that the design results meet the seismic requirements.

생활체육참가자 스포츠가치관에 미치는 영향

서희진 서울대학교 체육연구소 2001 서울大學校 體育硏究所論集 Vol.22 No.1

The purpose of this study was to explore the influence of participation in sport activity as essential element of life on the view of values in sport. More specifically, this study was to analyze the difference of the view of values in sport between participants and non-participants and the influence on degree of participation in sport activity(frequency, endurance, intensity) by investigating the influences on the subordinate variables of the values in sport: economic value, social value, recreational value, aesthetic value, character value and physical value. The subiects of this study who were sampled were 945 male and female adults who lived in Seoul using stratified cluster sampling and PPS(probability proportionate to size) sampling method. The data collected by questionnaire that was designed for this study consisted of responses to items constructed to represent each variable. The questionnaire for this study used Moon(1999)'s questionnaire that transformed from value division model of Evarett(1962) was verified through reliability and validity and designed to answer the questions with self-administrated method. Statistics employed in this study were t-test, multiple correlation analysis and multiple regression analysis. Based on the procedures and results, the following conclusions were warranted: First, there is a difference in the view of value in sport between the participants and non-participants, More specifically, The participants reveal higher social, recreational, and aesthetic value in sport than non-participants. Second, the degree of sport participation has infuenre on the view of values More specifically, the frequency, endurance, and intensity of sport participation has influence on recreational value in sport. And also, only the frequency participation variable has influence on aesthetic value, character value and physical value.

전신성 홍반성 루푸스에서 F-18 FDG PET상 기저핵 포도당대사 증가 소견을 보이는 무도병 1예 : Evidence for Bilateral Putaminal Hypermetabolism on F-18 FDG PET

서욱장,정선미,고수진,이창근,김재승,임주혁,유빈,문희범 대한핵의학회 2003 핵의학 분자영상 Vol.37 No.5

Purpose: We describe a 54-year-old woman with systemic lupus erythematosus (SLE) who suddenly presented with chorea and had positive antiphospholipid antibodies. F-18 FDG PET showed abnormally increased glucose metabolism in bilateral putamen and primary motor cotex. Tc-99m ECD SPECt also showed abnormally increased regional cerebral blood flow in bilateral putamen. She was treated with corticosteroid and aspirin after which the symptoms improved. Four months later, follow up F-18 FDG PET showed improvement with resolution of hypermetabolism in bilateral putamen. This case suggests that striatal hypermetabolism is associated with chorea in SLE.

"응급구조"란 용어의 개념에 관한 응급구조과 학생들의 의미수용변화

서경희,김학수,김진회 한국응급구조학회 2000 한국응급구조학회지 Vol.4 No.1

This is a study to evaluate the effects of the change of EMT students' acceptance on meaning "Korean style translation of EMT". The major instruments of this study were Korean Self-Analysis Acceptance Opinionnaire. This Questionnaire contains 3 items which measure students' opinions or attitudes. The data were analyzed by the path analysis - with SPSS and AMOS package program. The result are as follows: 1) Y(before admission) = 0.11X1(teaching)+0.12 X2(elder)+0.57X2(peer)+E. 2) Y(student) = 0.87X1(teaching)+0.49 X2(elder)+0.59X2(peer)+E. 3) Y(before graduation) = 0.57 X1(teaching)+0.63X2(elder)+0.73X2(peer)+E.

진공증착 장비를 이용한 유기발광 소자 제작

서유석,박훈,홍진수,채희백 순천향대학교 기초과학연구소 2004 순천향자연과학연구 논문집 Vol.10 No.2

We fabricated OLEDs(organic light emitting diodes) by vacuum evaporation. In our experiments, well-known materials are used; indium-tin-oxide(ITO) coated glass for anode, Al for cathode. N,N'-diphenyl-N,N'-bis(3-methylpheny)1,1'-bipheny-4,4'-diamine (TPD) for hole-transport layer, and tris(8-hydrxyquinoline) aluminum (Alq3) for an emissive and electron-measured J-V,L-V and J-Current efficiency I-V-L by using Keithley 236 source-measure unit and Minolta Luminance meter LS-100.

구강 편평세포암종에서 E-cadherin 및 β-catenin 발현의 변화 : Correlation with Histologic Features and p53 Expression

서진건,권창석,박진배,윤혜경,김우형,이희철 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Objective : Altered expression of cell adheion molecules is associated with biologic behavior of tumor. The aim of this study is to evaluate the expression pattern of E-cadherin, β-catenin and p53 protein according to histologic grade and invasion pattern of squamous cell carcinoma of the oral cavity and the relationship between E-cadherin, β-catenin and p53 protein expression. Methods and Material : The materials were fifty seven cses of squamous cell carcinoma, and clinicl parameers such as age, sex, tumor location, stage and recurrence were recorded. Histologic review was done based on histologic grade and invasion pattern(nodular vs infiltrative). Immunohistochemical stains for E-cadherin and β-ca tenin were interpreted based on staining pattern as los of membranous expression and cytoplasmic expression and p53 protein expression was defined as positive if more than 10% of nuclei were reactive. Statistical analysis between E-cadherin, β-catenin and p53 protein expressions and histologic grade and invasion pattern and the relationship between E-cdherin, β-catenin and p53 protein expressions were perfomed. Results : There wa positive correlation between higher histologic grade and infiltrative pattern. Loss of membranous expression and cytoplasmic expression of E-cadherin were noted in 33.3% and 57.9%, respectively, and loss of membranous expression of E-cadherin showed increaing tendency in poorly differentiated carcinomas, however, there was no significant difference of cytoplasmic expression rate of E-cadherin according to histoogic grade. Altered expression of E-cadherin was more frequent in poorly differentiated carcinomas. Loss of membranous expression and cytoplasmic expression of E-cadherin were more frequent in carinomas with infiltrative pattern than in carcinomas with nodular pattern, but their diferences were not significant, Loss of membranous expression and cytoplasmic expression of β-catenin were observed in 19.3% and 80.7%, respectively. Loss of membranous expression of β-catenin howed no positive correlation according to histologic grade and invasion pattern, but cytoplasmic expression rate of β-catenin was higher in poorly differentiated carcinomas and in carcinomas with infiltrative pettern. p53 protein expression rate was 45.6%, and showed invreasing tendency in poorly differentiated carcinomas, but no significant relationship with invasion pattern. There was an inverse relationship of loss of membranous expression and cytoplasmic expression of E-cadherin and β-catenin. Altered expression of E-cadherin was related to cytoplasmic expression of β-catenin, however, there were no significant relationship between altered expressions of E-cadherin and β-catenin and p53 protein expression. Conclusion : In squamous cell carcinomas of the oral cavity, altered expression of E-cadherin and β-catenin was more frequent in poorly differentiated carcinomas and in carcinomas with infiltrative pattern and there was positive correlation betwween altered expression of E-cadherin and β-catenin. These findings suggest that altered expressions of E-cadherin and β-catenin may have a role in the development of squamous cell carcinomas with aggressive biologic behavior. but altered explosions of E-cadherin and β-catenin. These findings suggest that altered expressions of E-cdherin and β-catenin my have a role in the development of squmaous cell carcinomas with aggressive biologic behavior. But altered expression of E-cadherin and β-catenin might not be related to p53 protein expression. Further study on genetic mutation related to altered expression of E-cadherin and β-catenin will be needed