• Title/Summary/Keyword: CLTD

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The Study on Project Information Management System for the Efficient Project Management of Commercialization-Linked Technology Development

  • Kim, Chang-Su;Jang, Bong-Im
    • Journal of information and communication convergence engineering
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    • v.9 no.5
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    • pp.597-601
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    • 2011
  • As researches of on scientific technology are considered as a pivotal factor of a national competitiveness, the central and local governments have extended assistance for commercialization-linked technology development (CLTD) and accordingly various outputs are coming out now. However, the valuable findings from painstaking researches are not sufficiently distributed to or shared with other governmental and public organizations, and businesses. As a result, it could be possible for them to become unknown and unused. Therefore, it is being sensed that a measure to coordinately and systematically manage the information and outputs derived from the research projects is urgently needed. Hence, this study designs PIMS to manage CLTD efficiently and transparently.

Design of Pre-filters for Maximizing Diversity Gain in MISO Wireless Communication Systems (MISO 무선 통신 시스템에서 다이버시티 이득을 최대화하는 사전필터의 설계)

  • 김산해;김홍철;김학성;이원철;신요안
    • Proceedings of the IEEK Conference
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    • 2001.09a
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    • pp.613-616
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    • 2001
  • 본 논문에서는 3GPP에 규격으로 채택된 전송 다이버 시티 기법들 중에 이상적인 상황에서 가장 우수한 성능을 갖는 폐쇄루프 전송 다이버시티 (CLTD : Closed Loop Transmit Diverstiy) 기법과 선형 사전필터의 조합을 통해 MISO 시스템에서 보다 우수한 성능의 전송 다이버시티 기법을 제안하고 이에 대한 성능을 분석하였다. 또한 사전필터의 최적의 필터 계수 값을 사용하여 다이버시티이득을 최대화하였고 이에 대한 성능을 분석한 결과 CLTD 기법보다 월등히 우수한 성능을 확인하였다.

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Optimized Design of Air Controlling System in Air Defense Gun Systems of Wheeled Vehicle (차륜형 대공포의 냉방기 최적화 설계)

  • Jeon, Ki-Hyun;Lee, Boo-Hwan;Lee, Dong-Hee
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.37 no.11
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    • pp.1047-1051
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    • 2013
  • A modern combat vehicle needs to have a separate air-conditioning unit, although new combat systems tend to employ an integrated heating, cooling, and ventilating system. In this study, we investigated an air conditioning unit for an armored combat wheeled vehicle as a special use and military specification and performed a case study of a unique military combat vehicle. By using Fluent software, we tried to determine a suitable air ducting method and its location in the armored combat vehicle. The results show that an air-conditioning unit is one of the best solutions for wheeled vehicles that are not equipped with a cooling unit for their crews, and it can be applied to similar types of armored vehicles.