고압유연배관 기술 개발 현황

신윤철(Shin Yun Cheol),김현웅(Kim Hyun Wung),방정석(Bang Jeong Seok),박종연(Jongyoun Park),김경석(Kim Kyungseok),전성민(Seongmin Jeon) 한국추진공학회 2018 한국추진공학회 학술대회논문집 Vol.2018 No.12

본 논문은 한국형발사체 75톤 액체 로켓 엔진에 적용되는 고압유연배관 기술 개발에 대해 기술한다. 고압유연배관은 GIMBAL BELLOWS라고도 하며, 연소기 짐벌 방식을 사용하는 한국형 발사체에서 관절의 역할을 하는 기능을 가지고 있다. 75톤 액체 로켓 엔진의 고압배관을 연결하며, 연소기 짐벌 시배관의 기능을 유지하면서 연소기 짐벌을 가능하게 한다. 고압 유연 배관은 1단 엔진과 2단 엔진에서 산화제나 연료를 터보펌프로부터 연소실로 전달하는 고압배관의 구성 품으로서 극저온상태를 견뎌내고, 높은 작동압력 이상을 만족하여야 하며, 연소기 짐벌 시 짐벌 각도의 요구조건을 만족하여야 한다. 본 논문에서는 고압유연배관의 요구 조건을 만족하도록 제작한 기술 개발에 대하여 소개한다. This paper describes the development of high pressure gimbal bellows technology for 75ton liquid rocket engine of Korean launch vehicle. High pressure flexible house is also called GIMBAL BELLOWS, and it acts as a join of Korean Launch vehicle using the combustor gimbal method. The high pressure gimbal bellows enables a combustor gimbal with a 75ton liquid rocket engine maintaining the function of piping when the combustor gimbals behavior. High pressure gimbal bellows is a high pressure piping component that convey oxidizer and fuel from a turbo pump to a combustion chamber in a 1st stage engine and a 2nd stage engine and satisfies a cryogenic condition and high operating pressure. Also, the gimbal angle requirement of the combustor gimbal behavior must be satisfied. In this paper, we introduce the development technology which was manufactured to satisfy the requirements of high pressure gimbal bellows.

12주간 복합운동이 노인 여성의 노인체력, 신체구성 및 백혈구 텔로미어 길이에 미치는 영향

신윤철 ( Yun-cheol Shin ),장용철 ( Yongchul Jang ),조준용 ( Joon-yong Cho ) 한국운동생리학회(구 한국운동과학회) 2020 운동과학 Vol.29 No.3

PURPOSE: This study is to investigate the effects of combined exercise on body composition, physical fitness and leukocyte telomere length in elderly women. METHODS: Twenty-six elderly women were randomly divided into two group: combined exercise group (EXE, n=14) and control group (CON, n=12). EXE group performed combined exercise for 60 mintues per day, 2days/week for 12 weeks. RESULTS: There was significant interaction between groups and time points in body composition (e.g., skeletal muscle mass, visceral fat area, and Inbody score). EXE group was no significant changes in skeletal muscle mass, visceral fat area and Inbody score, but the CON group showed significant decrease in skeletal muscle mass and Inbody score. Furthermore, increased in visceral fat area. Among the measurement variable of physical fitness, there was significant interaction between group and time in 6 minutes walking test, chair sit test, and knee flexion muscle endurance. In EXE group, 6 minutes walking test and chair test was significantly increased, and there were no significant differences in knee flexion muscle endurance, whereas CON group, the 6 minutes walking test and knee flexion muscle endurance significantly decreased, and there was no significant difference in chair test. In addition, there was significant interaction between groups and time points in leukocyte telomere length. EXE group was no significant changes, but CON group significantly decreased. CONCLUSIONS: Our study suggest that combined exercise-induced improvement of body composition and physical fitness may have had a positive effect on leukocyte telomere length in elderly women.

쌀 저장 단백질 글루텔린 유전자 암호 분석

신윤철(Yun Cheol Shin),김주곤(Ju Kon Kim),남백희(Baek Hie Nahm) 한국응용생명화학회 1993 Applied Biological Chemistry (Appl Biol Chem) Vol.36 No.6

To characterize glutelins, the most abundant storage protein in rice, 13 complete coding sequences of glutelin genes from the database were analyzed. According to the phylogenic analysis, these genes could be classified into 5 groups, Group I to V. The degrees of homology were calculated to be in the range of 90 to 60%, but the patterns of hydrophobicity were similar in all the groups. Also, each group was found to have similar amino acid composition with variations in lysine content from 2.5 to 3.6% due to the point mutation of arginine to lysine. The isoelectric points of mature proteins and their basic chains of all the groups showed the value of about 9.0 and 10.0, respectively, while the isoelectric points of acidic chains in these groups showed the distinct value of 6.6, 6.7, 7.2, 8.4 and 7.9. The plot of the fraction of G+C at synonimous site in codons (GC3s) against effective codon numbers suggest no major difference in translational efficiency in the expression of glutelin multigenes.

대형재하시험을 통한 원지반 부착식 패널옹벽의 거동분석

민경남(Kyoung-Nam Min),김진희(Jin-Hee Kim),신윤철(Yun-Cheol Shin),안태봉(Tae-Bong Ahn),안광국(Gwang-Guk Ahn) 한국지반환경공학회 2016 한국지반환경공학회 학술발표회논문집 Vol.2016 No.9

1980年代 以後의 農村社會運動의 性格과 方向

尹畯相,申尹澈 公州大學校 地域開發硏究所 1992 地域開發硏究論叢 Vol.1 No.1

The purpose of this study is to explore the characteristics of the Rural Social Movement since 1980s. This study were carried out through the review of literature. The major findings of the study were that 1) There have been much possibility to break out social movement on a large scale in rural society on account of rural society having the social structural factors(the economic disharmony, the status discordance, the difference of cultural goals and institutionalized means) and the psychological factors(frustration, a sense of alienation). So, we can prescribe the rural society to the situation of Anomie. 2) The characteristics of Rural Social Movement are to search for not only the economics interests but also the improvement of social, political, economic status and rights. So, the farmers formed the movement organization to participate social reformative changes. 3) The Rural Social Movement has been sloped in the preliminary stage(reconizing their problems), the popular stage(spreading their prolems) and the formal stage(forming movement organization). But not steped in the institutional stage(being systematic group movement) yet. The followings are recommended for improvement of rural social movement. 1) The movement organization must have resources such as organized power, leadership, fund, legitimacy for mobilization, supports from the outside. 2) The rural social movement policies must be developed and programmed by the farmer's needs and it must be allied with other social movement groups. 3) The rural social movement pratices must be changed from the out of system by using violent acts and stay-in strike to the within of system by sending their representatives to the national and local assembly.

農工團地의 工業構造와 立地特性에 관한 硏究 : 忠淸南道를 中心으로

申尹撤 公州大學校 産業開發硏究所 1994 産業開發硏究 Vol.2 No.-

The development project of rural-industrial complex aims to verify income source and to activate regional economic in the rural area b introducing industry. Ultimately, its aim was to accomplish the balanced regional development between urban and rural. The objectives of the study were 1) to measure the industrial structure and the locational characteristics of the rural-industrial complex in Chung-chong Namdo, 2) to draw implications for the development directions of rural-industrial complex. The major findings of this study were as follows; 1) Chung-chong Namdo area was the most active area on the development of rural-industrial complex in korea. The 603 enterprises of 49 complexes were ranged over 20 cities and Guns in Chung-chong Namdo in the present. 2) The type of industry of the occupant enterprises, the machinery and metal industry was highest with 24.9%, but the food industry was lowest with 6.5%. 3) The size of rural-industrial complex's enterprises, the number of employee were below 50 person(69.8%) and the size of estate was below a billion won(68.1%). 4) The characteristics of occupant enterprises in the complex, the newly established enterprises(52.9%) were more than the removal enterprises(47.1%). And the types of enterprises were divided into (1) a branch factory(46%), (2) a newly established factory(30.2%), (3) a removal factory(16.9%). And the major occupant factors in the rural-industrial complex were (1) the cheep land price(45.3%), (2) the support to tax and finance(21.7%).

귀농자의 귀농동기 및 배경특성 분석

신윤철,배성의,김동섭,윤준상 公州大學校 産業開發硏究所 1998 産業開發硏究 Vol.6 No.-

본 연구에서는 귀농자수가 점점 늘어나고 있는 사회현상에 관심을 가지고 귀농자들의 귀농동기 및 귀농배경에 대한 특성을 조사 분석하여 귀농자들의 성공적인 영농 정착을 위한 방안을 제시하려는데 있으며 그 결과는 다음과 같다. 첫째, 귀농자의 개인적 특성으로 연령분포를 보면 전체 귀농자 중 30대 이하가 60.1%로 젊음층 귀농자가 가장 높은 분포를 보였고, 학력별로는 중졸이하가 35.6%로 가장 높았다. 귀농 년도별로는 ’97~’98. 3월까지 귀농자가 38.7%로 가장 많았으며 귀농시기에 따라 최근에 가까울수록 귀농자수는 늘어나고 있었다. 연령별, 학력별 집단과 귀농 이유간에는 차이가 있었고 귀농 연도별 귀농 이유와는 집단간에 차이가 있음을 발견하지 못하였다. 귀농지역은 고향이 84%로 연고가 있는 지역으로 귀농한 자가 많았으며 귀농 전 도시 생활연수는 6~10년 이하가 29.5%, 11~20년 이하가 28.8%로 대부분을 차지하였다. 둘째, 귀농동기 및 배경적 특성 분석 결과를 보면 귀농하게 된 이유는 앞으로 농촌 전망이 밝아 농업에 종사하기 위해서 30.1%로 가장 높았으며 연령별로 보면 30대가 38.8%로 높은 분포를 이루었고 학력 분포로는 중졸자의 도시소득 미흡을 제외하고는 차이가 없었다. 귀농 시기별로는 ’94년 이전은 도시소득 미흡으로 귀농한 자가 많았고 ’94년 이후는 농업에 확고한 신념을 갖고 영농에 종사하려고 귀농한 자가 많았다. 귀농 전 직업은 회사원이 41.7%로 가장 높았는데 연령별로는 40대 이하는 회사원, 50대 이상은 자영업이 많았다. 학력은 중졸이하자와 대졸이상자는 자영업, 고졸과 전문대졸 출신자는 회사원이 많았고 귀농시기별로는 ’96년 이전 귀농자는 자영업, ’97년 이후는 회사원이 많았다. 연령별, 학력별, 귀농시기별 집단은 귀농 전 직업과 차이가 있음을 발견하지 못하였다. 귀농하는데 권유 또는 영향을 준 사람은 본인 스스로 귀농 결정이 55.2%로 가장 높고 귀농 전 농촌사정 아는 정도는 알고 귀농한 농가가 73.6%로 높게 나타났다.

地域開發政策에 대한 住民의 集團行動參與의 理論的 論議

尹畯相,申尹澈 公州大學校 地域開發硏究所 1994 地域開發硏究論叢 Vol.2 No.1

農工團地의 開發實態와 發展方向

申尹澈 公州大學校 地域開發硏究所 1992 地域開發硏究論叢 Vol.1 No.1

The objectives of the study were 1) to review the present situation and problems and 2) to search further development directions in the development work of Rural-industrial district. This study was carried out through literature review. The major findings of this study were as follows; 1) In order to develop and activate continually the Rural-industrial district, the manpower supply-demand relaction and the rural manpower utilization must be achived. In point of the rural manpower utilization, it is important not only growing the factory working ratio for the enterprises in rural-industrial district but also growing technical skilled manpower for the qualitive supplement of rural manpower. 2) Rural-industrial district development work must be carried out in terms of a link a chain of intergrated community development programs. So, rural area can be activated a settlement living area and a base of economic activity. And the shortage of manpower of rural-industrial enterprises can be solved basically. 3) In order to cope with the radical changes of industrial environment by the open-door policy and internationalization, rural-industrial district development stratigies must be changed. In the beginning, rural-industrial district development work was set out from farming income increasing. Now we must have aims to leaving out from petty farming and employment promoting of rural living. And rural-industrial district must be become a main location source of small and medium enterprises in rural-industrial district. So, we can achived macro goals by means of a balanced community development.

住民運動參與의 決定要因에 관한 硏究

尹晙相,申尹澈 公州大學校 産業開發硏究所 1993 産業開發硏究 Vol.1 No.-

The objectives of the study were 1) to determine related variables of people's participation in collective action against three public community development administration projects, 2) to draw implications for development of democratic community development administration. To collect data, three areas in South Chung-Chong Province where such collective action took place were selected and a total of 261 residents were sampled as final subjects of survey. The degree of people's participation as dependent variable was measured mainly by Likert style ranging from 6-30 points on average. The independent variables were divided into two : individual attributes(sex, age, schooling, job, income, perceived level of living, period of living) and attitude valuables(community satisfaction, community cohesiveness, community leadership, political efficacy, political reliability, interest in community development project, benefit in community development project, wills of participation in community development project) Interview and/or questionnaire method was the main method of data collection. The statistics to determine related variables used in this study were analysis of variance and multiple regression analysis with a .01 significance level. The major findings of this study were as follows; 1. Five personal characteristics out of 5 associated with the degree of people's participation in collective action by analysis of variance were selected: sex, age, schooling, income, perceived level of living. 2. As a result of multiple regression analysis, seven variables of affecting people's participation in collective action, were determined: (1) interest in community development project, (2) income, (3) sex (4) age (5) community leadership, (6) benefit in community development project (7) political efficacy. Out of those seven variables the interest in community development project had the highest influence on the people's participation in collective action(10.9%). 3. Therefore, four implication were drawn for more efficient democratic community development administration: (1) planning of community development projects from below, (2) widening people's participation in community development administration, (3) openness information system from community development administration, (4) acclimatization of social movement through adult/continuing education.