• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.32 no.3
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• pp.88-94
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• 2004

The KSR-III rocket is a liquid propellant sounding rocket and thrust vector control actuators and cold gas thrusters are used to control pitch and yaw, roll attitude respectively during thrusting phase. In this paper, the structure of designed attitude controller and gain scheduling, results of stability analysis for KSR-III rocket are presented. The attitude controller is implemented with flight software in the domestically developed INS and successfully performed its function in the flight test. The flight data are coincident with simulation results.

• Journal of Convergence Society for SMB
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• v.2 no.1
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• pp.41-50
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• 2012

In this research, we developed a scalable resource monitoring system for large scale scientific computing data centers. Usually, there are limitations and overheads for keeping track of every computing nodes because of the huge number of computing nodes. So, this research proposes a layered summarizing techniques during collection of all system resource information. The technique results in improved scalability by reducing the amount of information at higher layer. Our prototype system which is implemented with web service is applicable with the HTML5 mobile web technology on smart devices.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.15 no.2
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• pp.27-48
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• 2004

Research and development projects in Research and development projects in Korea are ineffectively conducted due to the lack of a system for effectively planning, conducting and disseminating the result of the research projects. In this study, we have designed a framework for system that can be used in the planning and managing stage of National R & D information to guarantee standardization and extendability of the information. A national R & D technology information portal system for managing the distributed national R & D information on a single database is suggested based on this framework for the construction of a more effective information support system and the dissemination of national R & D information between researchers.

• The Transactions of the Korean Institute of Power Electronics
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• v.5 no.5
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• pp.475-483
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• 2000

This paper describes designs about the power system of KITSAT-4 satellite. The KITSAT-4 power system is mainly composed of power stage and control stage. The power stage is a 200〔W〕 buck converter and control stages are hardware controller and software controller The hardware controller is PPT(Peak Power Tracker), battery voltage controller and software controller is battery current controller and direct duty controller. So the operation of power system has many advantages in that it can select controller according to reliable control and precise control. The controller design methods are presented and the small signal analyses are performed to verify system stability.

• Journal of Information Management
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• v.33 no.4
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• pp.107-128
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• 2002

The purpose of this study is developing a information support system for R&D decision making to maximize economic results of the R&D. This system is composed of studying the model of work flow for R&D decision making, analyzing a technology information, connecting with the databases from KISTI and others, and valuing R&D technology on line. Especially in the case of technology valuation, this system is combined with the valuation model which supports knowledge information for helping more objective estimation.

• Journal of the Korean Society for Library and Information Science
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• v.37 no.1
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• pp.27-42
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• 2003

The purpose of this study is to evaluate the quality of the Serials Union Catalog(UCAT) of KISTI. In examining both MARC records and bibliographic display records of 172 Japanese serials, AACR2R and KORMARC formats were used as the standard rules. Those records were described in the minimum or incomplete level ; but had repeated errors in various data fields, which included the incorrect choice of main headings, parallel titles and other titles, the improper use of language codes and related data fields, and the provision of incomplete information, etc. To improve the overall quality of bibliographic database, thorough comprehension and application of cataloging rules and MARC formats are strongly required.

• Journal of Science Education
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• v.39 no.1
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• pp.80-87
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• 2015

Understanding mutual impacts between the ocean and human beings is integral to sustainability of the Earth. Ocean literacy, therefore, is placed as a new paradigm of marine education in North America and Europe. Reflecting this movement, it is necessary for Korean marine educators to discuss conceptualization and future directions of Korean marine education. We reviewed marine education of North America as well as Korea in the domains of formal and informal marine education. We provide the definition, goal, and future recommendations for Korean marine education.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.1
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• pp.88.2-88.2
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• 2014

경희대학교 천문대는 한국과학창의재단에서 후원하는 2013년 과학문화 민간활동 지원사업의 일환으로 "청소년, 우주를 향해 미래를 쏘다!"라는 멘토링 프로그램을 2013년 7월 23일부터 2014년 2월 28일까지 진행하였다. 본 프로그램의 참가대상은 경기지역 고등학교 1, 2학년 학생 32명이 참가하였고, 대학생 멘토 8명과 팀으로 활동하였다. 본 프로그램의 목적은 달 탐사를 주제로 한 체험프로그램을 통해 청소년들의 우주개발의 현황을 체험할 수 있는 기회를 제공하고, 체험 프로그램을 활용하여 창의력, 협동심, 자신감을 함양시키며 이공계 분야의 비젼과 진로 방향을 제시하는 것이다. 본 프로그램은 6개의 주제로 총 10회 동안 진행되었으며, 각각의 주제는 우리나라 우주개발 현장체험, 달탐사의 필요성 체험, 발사체 및 탑재체의 이해와 체험, 청소년이 바라본 우리나라 달탐사의 미래, '우주로' 체험 캠프, 최종발표회이다. 프로그램은 체험, 조사, 발표 및 토의 형식으로 진행되었다. 본 프로그램에서 기대되는 성과는 조별 활동 및 다양한 체험 실습으로 협동심 및 인성을 함양하고, 천문학/공학 분야의 전공 대학생의 멘토링으로 논리적, 체계적, 비판적인 사고를 유도하고, 학연 협력을 활용한 현장학습으로 청소년들의 이공계에 대한 흥미를 유발하고 진로 방향을 제시하며, 다양한 체험 실습 및 미래 지향적인 컨텐츠를 활용하여 천문학 및 우주과학에 대한 호기심을 자극하는 것이다. 본 프로그램에서의 최종 성과물은 기존의 달탐사와 차별적인 주제와 방법론을 고안하여 논리적이고 창의적으로 우리나라의 달탐사에 대한 방법론적인 아이디어를 유도하는 것에 중점을 두었다.

• Annual Conference on Human and Language Technology
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• 2006.10e
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• pp.89-97
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• 2006

과학기술 문헌에 대한, 정확한 인용 정의의 제공을 위해서는 인용 관계를 구성하는 인력에 대한 동명이인 문제가 우선적으로 해소되어야 한다. 본 논문에서는 정확한 저자 중심의 인용 관계 및 네트워크를 구축하기 위해 URI(Universal Resource Identifier)를 이용하는 방법을 제안한다. 본 연구의 특징은, 지속적으로 추가되고 갱신되는 인용 정보를 일관성 있게 유지하고 정확한 문헌으로의 접근성을 보장하기 위해, 시맨틱웹 기술의 하나인 URI를 문헌과 저자에 적용하여 저자 중심 인용 관계 및 네트워크를 구축한다는 것이다. 실험에서는, 국내 학술대회 발표 논문들로부터 2,872개의 저자 중심 인용 관계 쌍을 추출하였고, 이를 바탕으로 구축한 저자 인용 네트워크에서는 135개의 인용 네트워크 그룹을 발견할 수 있었다. 본 연구의 결과는 향후 국가과학기술인력 종합정보시스템에서 제공하는 인력 DB 및 과학기술정보 포털서비스인 YesKiSTi와의 연계를 통하여 새로운 개념의 다양한 연구자 네트워크 서비스를 제공할 수 있을 것으로 기대된다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.8
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• pp.1463-1472
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• 2008

We propose Framework that (should) have data interoperability between Legacy DataBases using Proxy DataBases based on XMDR(eXtended Meta-Data Registry) Data Hub in this papers. It may occur some problems among data structure, semantics and other heterogeneous problems between interoperability of legacy DB on cooperation environment. Also, It is hard to keep consistency of Data that changes on realtime, regardless of data variety and type. In this paper, Using XMDR data hub, we solve the problem that was occurred by data integration and interoperability between legacy DB. We suggest the framework which are compatible with any class and type of interoperability-data and offer accurate information with consistency in real-time using proxy database.