주 5일 수업에 대한 고등학생들의 여가활동 조사 연구

유관호,정순광,김판규 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

This study was to find out the way how high school students have participated in current leisure activities recently and to suggest directions to activate leisure activities efficiently in case of weekly 5-school day system. The subjects for this study were male and female students who were working at 8 high school in Seoul. The simple random sampling was used to collect the data. In this study, total 400 questionnaires were distributed and 397 were used for the analysis. For data analysis, SPSSWIN(Statistical Package for Social Science for Window) 10.0 was used. Especially, frequency analysis, independent t-test, one-way ANOVA and Scheffe's multiple range test were used. The results of current leisure participation by high school students are come out as the following: Boy students laid stress on leisure activities themselves but girl students thought leisure facilities important. During leisure activities, boy students spent time with their friends or by themselves while girl students did it with their friends or families. On weekdays and holidays, boy students were spending most of their time doing things for pleasure(like playing Baduk and reading cartoons) or for fulfilling their interests (like taking pictures), but girl students were doing things for pleasure or for social interaction. In spending leisure time, the high school students in their first year spent below 1 hour and those in their second year spent about 2 hours. Healthy students' perception for leisure activities were shown stronger than those for weak students. Healthy students did leisure activities to enjoy their lives while weak students did them in order to get rid of stress. The college entrance system was chosen as a big obstacle to enjoy their leisure activities for all sampled groups. The results of the analysis about leisure activities in case of proceeding with weekly 5-school day system are the following: During weekdays and holidays, boy students wanted to do sport activities and girl students wanted to enjoy sightseeing and cultural activities. Boy students and second year students wanted a billiard room to be installed in school while girl students and first year students wanted a lounge. Boy students spent most of their leisure time at home or in a PC room, while girl students did at home, in a park or a playground. On holidays, high school students in their first year wanted to do sports activities while those in their second year wanted to go to the cultural facilities or do sports activities. During a vacation, first year students wanted to do sports activities and things for pleasure, but those in second year wanted to enjoy sightseeing and cultural activities. I'd like to suggest some desirable directions for leisure activities based on the analysis of the survey result: First, by improving college entrance system, make high schools become places which students can learn with the whole person education. Second, by develope active and energetic programs in leisure activities, make students get a lot of experience of life and build more leisure facilities. Third, since boy students prefer sports activities and girl students are interested in tour or sightseeing in case of weekly 5-school day system, it's necessary to study how to cope with the situation.

MoBr_2(CO)_2(PPh_3)_2과 tert-BuNH_2와의 반응

유효경,이순원 성균관대학교 기초과학연구소 1993 論文集 Vol.44 No.2

몰리브덴 나이트렌 화학종을 합성하기 위하여 전구체 MoBr_2(CO)_2(PPh_3)_2, I,과 부피가 큰 일차아민 tetr-BuNH_2을 반응시켰다. 이때 생성물들은 전구체와 아민의 몰비를 비롯한 여러 실험 조건에 따라 달랐다. Ⅰ과 tert-BuNH_2의 1:2 몰비율 반응에서는 MOBr(CO)_2(PPh_3)(NH^1Bu)(NH_2^1Bu), Ⅱ가 합성되었고, Ⅰ과 과량의 tert-BuNH_2 반응에서는 염 형태의 [MoBr(CO)_2(PPh_3)(NH_2^1Bu)_2]Br, Ⅲ이 합성되었다. 생성물들은 ^1H-NMR, ^13C-NMR, IR, 그리고 원소분석으로 규명하였다. Mo(CO)_2(PPH_3)_2Br_2, Ⅰ, reacted with tert-butylamine, a sterically bulky primary amine, to generate molybdenum-nitrene species. The products formed in the reactions were dependent on the reaction conditions, paricularly on the mole rations of reactants. The reaction of Ⅰ with tert-BuNH_2 in a 1:2 mode ration led to MoBr_2(CO)_2(NH^1Bu)(NH_2Bu)(PPh_3), Ⅱ, and the reaction of Ⅰ with excess tert-BuNH_2 gave[MoBr(CO)_2(NH_2^1Bu)2(PPh_3)]Br, Ⅲ, in a salt form. The products have been characterized by ^1H-NMR, ^13C-NMR, IR, and elemental analysis.

骨髓纖維化症으로 移行된 骨髓異形成症候群

이동순,황유성,조한익,김노경,김병국 大韓血液學會 1985 大韓血液學會誌 Vol.20 No.2

외상으로 유착된 영구 전치에서의 치관 절제술

강유진,김영진,김현정,남순현 大韓小兒齒科學會 2010 大韓小兒齒科學會誌 Vol.37 No.2

외상으로 치주 인대의 손상이 심한 치아에서는 치아-치조골 유착이 흔히 나타난다. 성장기 아동에서의 치아 유착의 경우 치조골의 성장 중단을 초래하여 저위 교합이 나타나며 이로 인하여 청소년기에 심미적 불만족이 생길 뿐 아니라 인접치의 경사가 발생한다. 이는 교정 또는 보철 치료를 어렵게 만들 수 있으므로 유착된 치아는 비교적 조기에 치료한다. 하지만 저위 교합된 치아를 발치할 경우 치조제의 상당한 소실을 유발할 수 있으며 특히 상악 전치부의 앓은 순측골의 위축을 가져와 심미적인 보철물을 형성하기가 어려워진다. 이러한 치조골의 소설을 방지하기 위하여 치아의 치관부는 제거하고 유착된 치근은 골에 의해 대체되도록 치조골에 남겨두는 치관절제술을 행하는 것이 바람직할 것으로 생각된다. 본 증례에서는 만 9세와 10세에 상악 전치부 치아의 외상을 받은 후 치근 유착이 발생하여 저위 교합을 보이는 성장기 남아에서 추후 예상되는 보철적, 교정적 합병증의 가능성을 감소시키기 위하여 치관절제술을 시행하였다. 저위교합이 2-3 mm정도 진행되었을 때 술식을 행하였으며, 환아의 성장을 고려하여 한국인의 최대 성장 완료 시기인 16세 이전에 술식을 행하였다. 계속적인 임상적, 방사선학적 검사 결과 수평적 치조골의 소실이 방지될 뿐 아니라, 치조골의 수직적 증가를 보이며, 남겨진 치근은 서서히 흡수되는 양상을 보였기에 이를 보고하고자 한다. Trauma commonlyleads to ankylosis for the tooth whose periodontal ligaments have been injured. In growing patients, an ankylosed tooth can disrupt alveolar development, resulting in infraocclusion of the affected tooth. Consequently, this causes aesthetic problems during adolescence, interferes with prosthetic treatment due to th.e inclination of adjacent teeth, and complicates orthodontic dental movement. When the infraoccluded ankylosed tooth is extracted, a considerable amount of alveolar bone is lost, especially in the maxillary anterior region. Moreover, depression of the thin buccal alveolar bone compromises aesthetic restoration. In order to prevent alveolar bone loss, the ankylosed tooth should be treated by decoronation. In the present study, the traumatically injured maxillary incisors of 9-year-old and 10-year-old patients that present infraocclusion accompanied by ankylosis were treated with decoronation procedures. Decoronation procedures were performed when the affected teeth were 2-3 mm below relatively to the adjacent teeth. Moreover, the patients were treated before they get to 16 years old considering the maximum growth peak of the korean adolescents. As the results, there are favorable clinical results associated not only with preservation of horizontal alveolar volume but also with increase in vertical alveolar height after decoronation in growing individuals.

막 접촉기-탈거탑 복합 공정을 이용한 이산화탄소 분리회수

연순화,서봉국,박유인,이규호 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.6

중공사막 접촉기를 기존의 흡수장치에 흡수기로 도입하여 구축한 hybrid 시스템을 이용하여 이산화탄소의 분리·회수에 관한 연구를 수행하였다. 분리효율이 우수한 중공사막 접촉기를 개발하기 위해 다양한 구조적 특성을 가지는 PVDF, PTFE 및 PP 중공사막을 이용하여 혼합 기체 및 흡수제 유량 등의 운전조건에 따른 이산화탄소 제거효율 특성을 조사하였다. 그 결과 중공사막 접촉기가 기존의 충진 흡수탑에 비해 큰 기-액간의 접촉면적으로 인해 분리효율이 높았으며, 그 중에서도 PVDF 중공사 막이 안정된 기-액간의 계면을 유지함으로서 다른 중공사막에 비해 우수한 분리효율을 나타내었다. 또한, 흡수제의 종류(H_2O, K_2CO_3, MEA)에 따른 흡수성능을 조사하고, CO_2-MEA계에서 각 중공사막에 대한 물질전달 특성을 비교하였다. 이산화탄소 분리효율, 경제성, 물질전달 특성 등을 고려하면, MEA를 흡수제로 사용한 경우, PVDF 중공사막이 막 접촉기로서 가장 적합할 것으로 기대된다. Membrane contactor-stripper hybrid process was used to recover CO_2 from the flue gas. Porous PTFE, PVDF, PP hollow fiber modules were used as the membrane contactor. The CO_2 was removed by the porous polymeric hollow fiber membrane contactor using H_2O, K_2CO_3 or monoethanolamine(MEA) solution as the absorbent. Then, the CO_2 was recovered from the absorbent by the thermal stripping tower with steam. The membrane contactor increased the gas-liquid contactor area and mass transfer coefficient, and thus the hybrid process showed a higher CO_2 removal efficiency than the conventional absorption tower. PVDF module with smaller pore size showed the most stable gas-liquid interface and the highest removal efficiency among the hollow fiber membrane contactor modules. gas

확장된 자료 종속성 제거 방법을 이용한 프로시저 변환

장유숙,박두순 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.2

In this paper the proposal of parallelism on sequential loop since most program execution time is consumed in loop structure. This procedure is about automatic transformation to nested DOALL loop and nested loops to reduce data dependency efficiently. And the study to extract the parallelism is about in only one procedure transition. But almost all programs have potential parallelism in between procedures. A procedure call, which has only one loop structure or procedure call, is almost all are concentrated on uniform code, which is in the distance of data dependency in uniform.For the parallelism on loops or procedure that has loops on paralleisms are concentrated on uniform code.We presents algorithms which can be applied with uniform code, nonuniform code and complex code. The proposed algorithm evaluate using CRAY-T3E. The result of performance evaluation is that proposed algorithm is an effect.

수종 Laminate Veneer용 도재간의 색차 비교

정유경,홍순호 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.2

The shade of prosthetic materials is very important for a successful restoration esthetically harmonized with the natural tooth. the purposes of this study were to evaluate the color differences that can exist between different brands of procelain laminate veneer systems with identical shade designations and to evaluate the color variations after luting with resin cement. For this purpose, the following experiments were done:4 kinds of porcelain laminate veneer specimens were fired to the same thickness and a resin cement of the same shade was luted to each porcelain laminate veneer specimen. Afterwards, the color of each specimen was determined and analysed by the colorimeter. The results were as follows: Corresponding shades of different brands of porcelain laminate veneer systems produced significantly different colors(p<.05). Color variations were found after luting with resin cement to the porcelain laminate veneer specimens(p<.05).

실과·기술교과교육 연구의 동향과 교과 교육학 강좌의 교재 개발 전략

김진순,최유현 충남대학교 공업교육연구소 1997 論文集 Vol.20 No.1

The purposes of this study were to review the international trends on the reform of technology education, to synthesize the research trends for structuring the research model of technology education, and to discuss the contents of pedagogical course for developing the texts. This study was conducted through reviewing an extensive of literature related to journals of practical arts & technology education since 1990, and to thesis, action research etc. The major findings of this study were as follows: 1. Countries such as UK(National Curriculum), USA(National Standards), New Zealand(National Curriculum) were introducing nationalwide common curriculum, and emphasizing some subjects as the 'core'. The philosophy and methodology of Technology Education in these countries based on problem solving-oriented approaches. 2. Articles on elementary practical arts education were published in the Journal of Korean Practical Arts Education(1985-1997), The Journal of Practical Arts Education Research(1995-1997). Articles on technology education were published in the Journal of the Korean Institute of Industrial Educators(1972-1997), The Journal of Vocational Education Research (1984-1997). Also, some action-research, thesis, dissertation on technology education were had studied. 3. Four variables of Research Model of Technology Education developed this study were Input, Process, Output, and Support Variable based on the generality of education and speciality of technology education. This model will be contributed the structuring of the paper on the study of technology education. 4. The subjects of pedagogical course of elementary practical arts education suggested in this study were Introduction of Practical Arts Education and Research on the Text Contents of Practical Arts Education. Also, the subjects of pedagogical course of technology education suggested in this study were Introduction of Technology Education, Teaching of Technology Education, Curriculum and Assessment of Technology Education, and Research on the Text of Technology Education. Therefore texts for this course should be developed and published through cooperative writing.

중국 신사복 생산지의 위상과 한국 패션기업의 대응전략

이유순 한국의류산업학회 2004 한국의류산업학회지 Vol.6 No.3

선형 루프 변환을 위한 통합체제에 관한 연구

장유숙,박두순 순천향대학교 부설 산업기술연구소 1997 순천향 산업기술연구소논문집 Vol.3 No.2

The parallelization of loops can be made formal by basing it on an algebraic theory of loop transformation. In this theory, the concept of unimodularity and non-unimodularity arises. We discuss the linear loop transformation framework which is the formal basis for state of the art optimization techniques in restructuring compilers for parallel machines. The framework unifies most existing transformations. We discuss in detail the techniques that generates the transformed loop and derives the desired linear transformation. We present method on loop and data transformations and motivate a unified framework.