OMT 모델을 기반으로 한 관계형 데이타베이스 설계 시스템의 구현

정헌석,이은경,임해철,김용환 弘益大學校 科學技術硏究所 1997 科學技術硏究論文集 Vol.8 No.-

Database design is the base of the entire process related to the database, and the well-designed database schema has a great effect on the system performance. So, there's a growing need for the automatic schema generation system. In this paper, database design automation system is implemented which translates automatically OMT based database model to relational database table. For developing this system, transformation rules of OMT into RDB schema are suggested which satisfy normalization and integrity constraints. This automation system can be used efficiently in the area of training database system and applying database design in actual business fields.

우리나라와 일본의 고등학교 가정과 교육과정의 비교연구

정옥님,김영숙,전옥하 조선대학교 교육연구소 1984 교과교육연구 Vol.7 No.-

This study is aimed to make a proposal for the improved curriculum of the home econ-omics education of Korean high school, based on the contrastive study on educational objective and contents, general course objective and contents, specific course objectives and contents, specific couse organization and time allotment in Korean and Japanese high schools. The general and specific course organization in each country has its own characteristics. Korea has both required and elective subjects, but with less number of units, and the organization of the course is more general and extensive, while Japan has only required courses with more number of units and less number of subjects. What is significant in Japanese case is its course organization which presents more realistic and concrete materials. And this fact suggests us to consider the possibility to select more concrete materials and make systematic organization, aimed at reducing the volume to be taught by integrating similar subjects, but improving the quality of the education toward the educational objective of teaching students with more specialized skills and techniques.

PMDA-ODA 폴리이미드의 합성 및 특성에 관한 연구

정용재,한태성,최성부,남석태,김병식 동국대학교 산업기술연구원 1996 산업기술논문집 Vol.8 No.-

Pyromellitic dianhydride(PMDA) 와 Oxydianiline(ODA)를 N, N-dimethylacetamide (DMAc)에 녹여 Polyamic acid(PAA)를 2단계 열이미드화법으로 제조하였다. 제조된 폴리이미드 막의 이미드화도는 FT-IR에 의하여 분석되었다. 또한 PAA의 농도를 10~30wt%로 변화시키며 합성하여 열이미드화 시킨 후 농도에 따른 단면의 상태를 SEM사진을 통하여 관찰하였다. 농도 변화에 따른 밀도와 T_g의 변화는 혼합액체부상법과 DSC로 분석되었다. 열처리 온도를 증가시킬수록 이미드화도는 증가되었고 PAA의 농도가 증가할수록 필름의 단면이 치밀해짐을 알 수 있었다. 또한 제조된 PMDA-ODA 폴리이미드의 T_g는 215℃ 이었다. Polyamic acid(PAA) was synthesised with Pyromellitic dianhydride(PMDA) and Oxydianiline (ODA) in N, N-dimethylacetamide(DMAc). PMDA-ODA polyimide membranes were obtained by two step thermal imidization, and the degree of imidization of polyimide membranes was observed by the FT-IR. After the thermal imidization through the concentration of varied synthesis of PAA, 10~30wt%, SEM photographies of section state were observed. The density and glass transition temperature on the varied concentration were replace with investigated test of density and Differential Scanning Calorimetry (DSC). With increasing thermal treatment temperature, the degree of imidization was increased. While the concentration of PAA increases, the section of membrane was densed. The glass transition temperature was maintained to be constant(215℃) within the PAA concentration range.

후방 도달 척추 절제술을 이용한 강직성 요천추 변형의 치료

석세일,정의룡,이정희,김진혁,김성수,이지호,최원기,박용원 대한척추외과학회 2004 대한척추외과학회지 Vol.11 No.2

强迫神經症의 精神治療에 對한 小考

鄭昌鎔,김상욱(?),姜錫憲,尹錫夏 大韓神經精神醫學會 1970 신경정신의학 Vol.9 No.1

1) From the authors' Psychotherapeutic experiences with obsessive neurotics Since 1964. they stressed the characteristic projection phenomena of inner feeling of dissatisfaction or disgust into alleged outer unfulfillment of performances in the repetitive and ritualistic activities of obsessive neurotics. 2) In the earlier phases of psychotherapy with obsessive neurotics, the authors' primary attention is focused on these projection phenomena with the aid of “logical dialogue”which is characterized by therapists' logical attacks at pseudological defensive operations of obsessive neurotics. 3) With these rather half-directed methods, the authors felt the psychotherapists could save much of unnecessary introductory plases of psychotherapy with obsessive neurotics.

역행성 골수강내 금속정을 이용한 대퇴골 과상-과간 골절의 치료

정필현,황정수,강 석,김종필,전용진 대한골절학회 2004 대한골절학회지 Vol.17 No.2

중·고 운동선수의 선호 리더십 유형에 관한 연구

鄭容敏,表內淑 釜山大學校 附設 體育科學硏究所 1993 體育科學硏究所 論文集 Vol.9 No.-

The purpose of this study was to show a preffered coaching leadership style of middle and high school atheletes, and to show a difference of preffered leadership style in subjects' personal characteristics. The questionnaire was LSS by Chelladurai and Sahleh(1980) for measuring leadership style and analysed subjects were 695 middle and high school players in Pusan. After those analyses of the data, the following conclusion could be drawn: 1. The most preferred leadership style of subjects was training and instruction, on the other hand, the least was autocratic behavior. 2. Autocratic behavior and social support showed significant difference in the preffered leadership style according to gender. 3. Training and instruction showed significiant difference in preferred leadership style according to maturity. 4. Training and instruction democrative behavior, autocratic behavior, and social support showed significiant difference in preferred leadership style according to characteristics of sports.

이동통신 멀티미디어 데이터서비스의 트래픽 특성 모델링 및 성능분석

정용주,백천현,김후곤,최택진,양원석,황흥석 한국경영과학회 2003 한국경영과학회지 Vol.28 No.2

The aim of this study is to identify the data traffic capacity of 3G mobile communication networks, especially of cdma2000-1X networks. Three-layered ON/OFF traffic model is used to describe the dynamics of data traffics and the process of data transmission such as packet scheduling. We construct a simulator fully incorporating packet handling process of cdma2000-1X data network as well as three-layered ON/OFF traffic model describing the behavior of source data traffics. To get influence of traffic parameters on performance measures, the extensive simulations were performed for several data sets which are obtained from real trace data or previous studies. The experimental results show that the engineered throughput satisfying QoS criteria is approximately 20% of total capacity. Finally, some proposals to improve the system capacity are followed.

송어를 감염원으로 한 광절열두조충 인체감염

정평림,이규재,양용석,안영겸 THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 1996 Journal of biomedical laboratory sciences Vol.2 No.2

최근 한국에 있어서 광절열두조충 감염예가 가끔 보고되고 있다. 저자등은 1994년 10월 강원도 춘천시 거주 남녀 부부가 함께 담수산 송어회를 먹고 감염된 2예에 대하여 보고하는 바이다. 구충은 하제(下濟)로서 Magnesium sulfate 15gm, 구충제 Praziquantel 15mg/kg를 투여 하였다. 제1예는 인OO, 43세 남자, 69kg의 건강체였으며, 구충하여 얻은 충체는 길이 6.65m, 폭 8-13mm였다. 제2예는 최OO, 39세 여자, 56kg으로 소화불량, 복부 불쾌감을 호소하였고, 구충하여 얻은 충체는 5.50m, 폭 8-13mm이었다. 2예 모두에서 두부는 검출 되지 않았다. 구충하여 얻은 충체의 외관상 형태, 자궁의 선회, 자궁분지(uterine loops)의 수, 생식공의 위치와 절단표본상 음경낭과 저정낭의 형태, 질의 위치, 자궁구의 위치등과 충란을 광학현미경으로 관찰 한 형태, 크기 및 SEM으로 관찰 한 표피의 작은 점각(pits)의 유무, 분포등 형태학적인 특징등으로 Diphyllobothrium latum으로 동정하였다. 이번의 인체 감염은 담수산 송어회가 원인이 된 것으로 믿어지는 예이다. A total of 31 human diphyllobothriasis cases have been reported in Korea. Authors experienced two more human cases of Diphyllobothrium latum infection, especially due to eating raw freshwater trout. Two cases were husband and wife in a famil residing in Chunchon city, Kangwon-do, who raw fish in October 1994. A 43-year old male(husband) was 69kg in body weight and healthy. A worm (6.65m in length; 8-l3mm in width) was expelled from him anthelmintic treatment. The second case(wife) was a 39-year old female who weighted She complained about gastrointestinal trouble and abdominal discomfort. A worm (5.50m in length; 9-l3mm in width) was Obtained her after anthelmintic treatment. No scolex was collected from the two worms. Two patients were administrated with praziquantel(l5mg/kg of body weight) and l5gm of magnesium sulfate as a purgative. Two worms identified as D. latum, based on the following biological characters: extermal morphologies, coiling of uterus, the number of uterine loops, position of genital opening, morphologies of cirrus and cirrus sac and seminal vesicle on the histological sections, positions of vagina and uterine pore, distribution patterns of vitellaria, and microscopical and SEM morphologies of the egg.

확률선형계획법에 적용한 안장함수의 기대치에 관한 연구

정순석,이용화 충주대 산업과학기술연구소 1999 産業科學論文集 Vol.7 No.1

This paper is organized as follows: Section 2 begins with a disscussion on existing bounds under first-order moments, and then presents the framework for developing new bounds under second-order moments. In section 3, this framework is used to derive lower and upper bounds for the expectation of a saddle function under simplicial domains, using first moments as well as variance/covariance information. Section 4 utilizes second-order joint moments and rectangular domauns to derive bounds for the saddle case. Section 5 give a example that are infimum and supremum of E[g] on convex-concave saddle function.