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김춘택,양인영,이경재,이양지 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11
과거 냉전시절의 우주개발은 성능이라는 목표에 초점이 맞추어져 있었다. 하지만 냉전이후 경제성이 우주개발에 있어서 중요한 목표가 되었으며, 이러한 경제성을 확보하기 위한 중요한 수단으로 재사용 발사체에 대한 관심과 연구가 지속적으로 증가하고 있는 실정이다. 본 논문에서는 이와 같이 진행되고 있는 현재 세계 각국의 재사용 발사체 및 미래추진기관에 대한 기술발전 전망과 방향에 대하여 소개하고자 한다. During the Cold War, all space developments were focused on the performance only. However economy becomes more important for space development after the Cold War. There is a growing interest in reusable launch vehicle to secure the economic feasibility. In this paper, technology development prospects and direction of reusable launch vehicles and future propulsion systems of various countries are presented.
농촌 동성마을의 사회경제적 특성과 지역결속력에 관한 연구 ― 안동 가일마을을 중심으로
김춘택 부산대학교 한국민족문화연구소 2006 한국민족문화 Vol.27 No.-
A Fundamental Study on the Socio-Economic Characteristic and Solidarity of the Consanguine Village in Rural Community― in Andong Gail This paper aims at providing us with the basis to solve the rural society problems through the ideology-orientation and solidarity of the consanguine village in rural communities. The analyses of the paper focus on Andong Gail village, and we not only analyzed the literature concerned but also collected the data by questionaires. The results of the analyses of solidarity in Gail are as follows. In the demo-socio factors, the number of Andong Kwon is 27%, which represents Gail village as the consanguine village in Korean rural communities. In analyzing the landholding, Andong Kwon posesses 50.6% of rice field and 48% of dry field in Gail. In ANOVA analysis of the solidarity, the higher the economic satisfaction, the more non-consanguine family name and free-democratic orientation, the higher the solidarity. In regression analysis of the solidarity, the results of the factors and solidarity are as follows. the factors affecting the solidarity are not the consanguine name, tobaki(number value that means that the dwelling years are divided by the ages) and consanguine name orientation but the economic satisfaction, age. So, in Andong Gail the social welfare subject concerned with making the social welfare policy to solve the problems must give them affliation services and income incease service program .