• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.31 no.7
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• pp.100-111
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• 2003

The HAUSAT-1(Hankuk Aviation University SATellite-1) will orbit at the altitude of 650km-800 km with 65 or 98 degree inclination angle. The effects of magnetic field and Earth gravity are more predominant than other space disturbances because the HAUSAT-1 will be positioned in LEO(Low Earth Orbit). The HAUSAT-1 design implements a magnetic control system and gravity-stable system which implement the solar panel deployment system. The simulation using MATLAB was performed to make sure the attitude stability of HAUSAT-1, which is based on the 8th order magnetic field model and non-linear equations of disturbances and the HAUSAT-1 attitude. The stability is investigated for two different HAUSAT-1 configurations and attitude which are affected by disturbances through simulation. The results for gravity-gradient stable and non gravity-gradient stable system are compared. Methodology of attitude stabilization was explored to develop an effective attitude control system for the HAUSAT-1 using magnetic torquers.

• Korea journal of population studies
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• v.25 no.1
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• pp.145-179
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• 2002

This study explores the change of family policy in Germany focused on political ideologies and instruments of CDU/CSU and SPD. In past 50 years after the 2. world war the family policy in Germany has been influenced by ideologies of 2 major political parties. With conservative political perspectives, CDU and CSU intend to strengthen the institution family and traditional division of domestic work. Therefore, they prefer indirect support methods by income tax benefit for family as political instrument. SPD with liberal political perspectives intends to support working married women and children. As political instrument SPD prefers allowance for child to indirect support system. This different political perspectives of 2 major parties have been reflected automatically on the federal administrative system(BMFSFJ) which takes responsibility of family policy in Germany. Through the analysis of attitudes to family policy of major parties in Germany this paper attempts to be manifest the problem of korean family policy and to find implications of german modell.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.22 no.3
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• pp.5-24
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• 2011

Teachers must design instruction to meet effective teaching and learning before teaching implementation. The traditional models of instructional design such as Dick and Carey, ADDIE and ASSURE have been widely applied. However, the traditional models of instructional design have limitation in that students fail in deep understanding of subject content because of break down essential goal of the unit small pieces of contents. To solve this problem, Wiggins and McTighe have suggested backward design. Backward design is a method of designing instruction by setting evaluation before choosing activities or content to teach. Therefore, this study explores the effective teaching and learning by analyzing structure of backward design and appling backward design to 'Library and Information Life' subject for information literacy education. Backward design for 'Library and Information Life' subject applies the template which Wiggins and McTighe devised for instructional design.

• The Korean Journal of Archival Studies
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• no.75
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• pp.5-39
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• 2023

More than 20 years after introducing the public records management system in Korea, the criteria and methodologies for archival appraisal and selection are still unclear. Modern archival appraisal theories have developed in two orientations, such as provenance and pertinence. This study aims to investigate the methodological implications of each theoretical orientation of archival appraisal and to suggest some directions for improving the appraisal practices and policies. Firstly, archival appraisal theories are analyzed according two orientations. Secondly, four methodologies are derived from combining the macro/micro dimension and theoretical orientations. Thirdly, the methodological orientations of the criteria for selecting permanent records presented in the Public Records Management Act are analyzed. Finally, based on these analyses, appraisal policies and practices for selecting the records with permanent value are proposed to be improved.

• Journal of the Korean Geotechnical Society
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• v.25 no.10
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• pp.41-53
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• 2009

In order to analyze the influence of particle shape on evolution of particle crushing and characteristic of shear behavior of granular soil, direct shear test was simulated by using DEM (Discrete Element Method). Six particle shapes were generated by clump and cluster model built in PFC (Particle Flow Code). The results of direct shear test for six particle shapes were compared and analyzed with those for circular particle shape. The results of numerical tests showed a good agreement with those of experimental tests, thus the appropriateness of numerical modelling set in this study was proved. As for particle shape, more angular and rougher particle induced larger internal friction angle and more particle crushing than relatively round and smooth particle. When particles were crushed, crushing was concentrated on the shear band adjacent to the shear plane. Finally, it can be concluded that the numerical models suggested in this study can be used extensively for other studies concerning the shear behavior of granular soil including soil crushing.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.553-564
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• 2022

The purpose of this study is to examine the family reproduced by fishing village episode 1. (삼시세끼, three meals a day), which attempted a new type of entertainment termed an experiential real entertainment documentary, was produced in a total of nine episodes from October 2014 to March 2015. This study analyzed fishing village episode 1, which was aired in 2015 and obtained the highest ratings, using narrative analysis. The development of was consistently structured in the order of 'wake up - free time - breakfast - lunch - dinner - rest - sleep'. The character construction of the characters was created through the arrangement of a main space and a main role for each of the characters. Also, the characters were in relationships through which they became the background of each other. Therefore, in the family reproduced by , a mother without a father and a father without a mother are impossible. Despite that all the cast members were male, the subtitles constantly gave them the roles of 'housewife/wife/mother', 'father/husband/dad', and 'son', while actively blocking the image of a homosexual family. The family created as such was a family with children, a family with both mother and father, a heterosexual family, and a nuclear family. As a result, reproduced the typical modern family, normal family, and standard family.

• 한국정보교육학회:학술대회논문집
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• 2006.01a
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• pp.164-169
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• 2006

각 나라의 경쟁력은 기존의 자원이나 자본이 아닌 뛰어난 인재들의 두뇌에서 나올것이라는 앨빈 토플러의 말이 이미 현실이 되어 우수한 두뇌를 갖기 위한 치열한 전쟁의 시대가 전개되고 있다. 이에 우리나라가 21세기 첨단지식기반의 정보화 세계화 사회에서 국가 경쟁력을 확보하려면, 고급 인적자원을 조기에 발굴하여 체계적으로 교육하는 프로그램이 필요하다. 따라서 고도의 지식정보 사회에 적응하고 국가간 경쟁력에서 앞서나가려면 정보과학영역에서의 영재교육의 중요성이 커지고 있다. 이에 국가적인 차원에서 고도의 정보사회에 부응할 수 있게 17개 대학부설 과학영재교육원 및 여러 영재교육기관에서 정보과학 영재를 선발하여 교육하고 있다. 그런 의미에서 본 논문에서는 제주지역 대학부설 과학영재교육원과 다른 영재교육기관에서의 정보 영재 선발에 관련된 제반 사항 및 교육과정과 교육내용에 대하여 연구하여 보았다.

• Electronics and Telecommunications Trends
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• v.15 no.4 s.64
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• pp.52-63
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• 2000

현재 국내 초고속인터넷서비스 시장은 기존통신사업자들의 업역 확대와 신규사업자들의 진입에 따라 초경쟁(hyper-competition)상황에 놓여 있다. 이에 본 고에서는 국내 초고속인터넷서비스 시장의 주요 제품으로 등장하고 있는 ADSL 및 Cable Modem 기술을 이용한 서비스의 시장 경쟁상황을 Porter의 산업구조분석 모형(5-force model)의 측면에서 개괄하고, 현재 사업을 전개하고 있는 각 사업자의 서비스 제공 내용 및 가격 현황을 제시한 후 이들의 가격 및 판촉전략 비교를 통해 향후 사업자들이 취할 수 있는 전략방향을 제시하고자 하였다.

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.3 no.2
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• pp.46-55
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• 1992

In this paper, A spectral inversion scheme in cylinderical coordinates, appling the moment method procedure is suggested to reconstruct permittivity profiles of inhomogeneous dielectric objects. Angular spectral domain reconstruction is shown to be less sensitive to the ill-posedness due to the noise in the scattered field then the configuration reconstruction

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.05b
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• pp.221-222
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• 2003

최근 농촌지역의 생물질 소각으로 인해 일시적이나마 시정의 급속한 악화, 호흡곤란과 같은 심각한 대기오염문제가 발생하고 있다. 우리 나라의 경우 이러한 생물질 소각은 주로 농사활동과 깊은 관련이 있는데 봄철과 가을철에 많이 발생한다. 본 연구의 측정 지점의 선행 연구결과를 보면 생물질 소각이 활발히 전개된 시기 12시간 포집된 PM2.5의 질량농도가 200$\mu\textrm{m}$/m$^3$까지 이르는 것으로 나타났고(박승식, 2002), 비록 연구시기는 다르지만 작년 6월 측정결과에 따르면 생물질 소각이 없었던 날에 비교하여 PM10, PM2.5 질량분포가 각각 340%, 360%증가하는 것으로 조사되었다(유성윤, 2002). (중략)