• 제목/요약/키워드: Research Activities

검색결과 562건 처리시간 0.314초

Airlift 생물반응기 (Airlift Bioreactors)

  • 류희옥;장용근김상돈
    • KSBB Journal
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    • 제9권4호
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    • pp.347-364
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    • 1994
  • Airlift bioreactors are extensively used in the fields of aerobic fermentation, animal and plant cell cultures. This review article evaluates the present research activities in the field of airlift bioreactors. The published research works on the design parameters such as types, location and properties of gas sparser, hydrodynamic properties such as phase holdups mixing, liquid circulation rate, mass and heat transfer rates are summarized. Also, recommendations are presented for designing airlift bioreactors.

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지능 로보트 시스템 (Intelligent robot system)

  • 정명진;변증남
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1986년도 한국자동제어학술회의논문집; 한국과학기술대학, 충남; 17-18 Oct. 1986
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    • pp.21-25
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    • 1986
  • An intelligent robot system can be regarded as the most generalized machine system that can perform a variety of tasks under unpredictable and unstructured environment with some intelligence. Robotics research topics related to four functions of the intelligent robot system are discussed. Also current research activities in Japan and Korea are discussed briefly.

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A research trend of occupational ergonomics in Korea

  • Lee, S.D.
    • 대한인간공학회지
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    • 제9권2호
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    • pp.65-72
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    • 1990
  • The historical development process and the current research trends of ergonmics in Korea are reviewed and organized in this paper. The recommended research directions in the near future are also discussed based upon the analyses of the potential major key industries of Korea in 1990's. Keynords: Human Engineering Society of Korea; Research activities in Ergonomics; Ergonomics educations

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Lee Sang Gak Telescope (LSGT)

  • Im, Myungshin;Choi, Changsu;Kim, Kihyun
    • 천문학회보
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    • 제40권1호
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    • pp.82.2-82.2
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    • 2015
  • In this talk, we introduce the Lee Sang Gak Telescope (LSGT), a 0.43m telescope that can be operated remotely. This telescope was installed at the Siding Spring Observatory in 2015 October, and since then, it has been operated through a robotic reservation system, remotely from Korea. This telescope is now being used for educational and research activities of SNU Astronomy program. By placing the telescope at a place with an excellent astro-climate in Australia, the observation class activity can include objects in the southern hemisphere to the magnitude limit of V=20 mag at an exposure time of a few minutes. For example, Cepheid stars in Magellanic clouds can be observed during a class activity for constructing the classical Cepheid light curves that has been a key distance measure technique. Research activities such as transient observation and monitoring observation of AGN are possible, and we are currently running a high cadence supernovae search program by monitoring nearby galaxies intensively (see a presentation by C. Choi). The installation of the telescope was made possible from a support from the Seoul.

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저속 충격쇄빙 시 빙하중 신호에 따른 선속 변화 연구 (A Study of the Change of Ship Speed according to the Ice Load Signal during Slow Ramming)

  • 안세진;이탁기
    • 한국해양공학회지
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    • 제33권6호
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    • pp.627-631
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    • 2019
  • Recently, researchers in Korea and abroad actively have conducted research activities using the ARAON, a Korean icebreaking research vessel. The ARAON regularly conduct research activities in the Arctic and Antarctic waters every year. The icebreaking mode, which can be either continuous breaking or ramming, is determined by the conditions of the ice and the ice-covered waters. When the icebreaker encounters thick sea ice or an ice ridge, ramming is used. At that time, the speed of the ship generally is slower than that of continuous icebreaking. In this study, the ice load signal at the time of repetitive ramming during ARAON's 2012 Antarctic research voyage was analyzed. The time history of the ice load signal and the change in the speed of the ship used in ramming were compared with these values during continuous icebreaking.

PRA RESEARCH AND THE DEVELOPMENT OF RISK-INFORMED REGULATION AT THE U.S. NUCLEAR REGULATORY COMMISSION

  • Siu, Nathan;Collins, Dorothy
    • Nuclear Engineering and Technology
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    • 제40권5호
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    • pp.349-364
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    • 2008
  • Over the years, probabilistic risk assessment (PRA) research activities conducted at the U.S. Nuclear Regulatory Commission (NRC) have played an essential role in support of the agency's move towards risk-informed regulation. These research activities have provided the technical basis for NRC's regulatory activities in key areas; provided PRA methods, tools, and data enabling the agency to meet future challenges; supported the implementation of NRC's 1995 PRA Policy Statement by assessing key sources of risk; and supported the development of necessary technical and human resources supporting NRC's risk-informed activities. PRA research aimed at improving the NRC's understanding of risk can positively affect the agency's regulatory activities, as evidenced by three case studies involving research on fire PRA, human reliability analysis (HRA), and pressurized thermal shock (PTS) PRA. These case studies also show that such research can take a considerable amount of time, and that the incorporation of research results into regulatory practice can take even longer. The need for sustained effort and appropriate lead time is an important consideration in the development of a PRA research program aimed at helping the agency address key sources of risk for current and potential future facilities.

북한(北韓)의 수산업분야(水産業分野) 연구체제(硏究體制)와 최근(最近)의 연구동향(硏究動向) (Fisheries Research System and Recent Research Movement in North Korea)

  • 이병기;박영호;최종화
    • 수산해양교육연구
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    • 제5권2호
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    • pp.67-79
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    • 1993
  • In North Korea, the level of scientific technical research and development is evaluated as low owing to the contradictoriness and limitations of social system. Especially the recent fisheries research fruits are embodying the scientific technical policy of the government faithfully. The characteristics of the fisheries research system and recent research movement in North Korea are summarized as follows : First, the research system is not equipped with sufficient condition for the researchers to act to the best of their individual ability on account of standardized governmental control. Second, the fisheries research activities are excuted mainly on the means of industrial problem solution rather than academic ones. Accordingly, the level of fisheries research can be estimated the same as early in 1970s in South Korea. Third, analysis by the fisheries research sectors shows that research activities on the marine fishery and aquaculture are somewhat active, but on the marine products processing are falling behind comparatively.

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과학기술정보 서비스 플랫폼에서의 빅데이터 분석을 통한 개인화 추천서비스 설계 (Personal Recommendation Service Design Through Big Data Analysis on Science Technology Information Service Platform)

  • 김도균
    • 한국비블리아학회지
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    • 제28권4호
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    • pp.501-518
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    • 2017
  • 연구자들에게 지식을 습득하여 연구 활동에 도입하는데 걸리는 소요시간을 단축하는 것은 연구생산성 향상에 필수적인 요소라고 할 수 있다. 본 연구의 목적은 한민족과학기술자네트워크(KOSEN) 사용자들의 정보 이용 패턴을 군집화하고 그룹화 된 사용자들에게 맞는 개인화 추천서비스 알고리즘의 최적화 방안을 제안하는 것이다. 사용자들의 연구활동과 이용정보에 기반하여 적합한 서비스와 콘텐츠를 식별한 후 Spark 기반의 빅데이터 분석 기술을 적용하여 개인화 추천 알고리즘을 도출하였다. 개인화 추천 알고리즘은 사용자의 정보검색에 소요되는 시간을 절약하고 적합한 정보를 찾아내는데 도움을 줄 수 있다.

DEA 모형을 이용한 정부출연연구기관의 상대적 효율성 분석 (Analysis of Relative Efficiency of Government Funded Research Institutes Using DEA Model)

  • 남인석;송윤영;정병호
    • 산업경영시스템학회지
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    • 제31권1호
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    • pp.1-10
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    • 2008
  • The enormous budget of government and manpower are invested to the government funded institutes every year. The R&D investment focused on input has to be turned toward the investment based on the effectiveness of R&D activities. Measuring the efficiency of research activities is required in order to evaluate the effectiveness of R&D investment in these institutes. The purpose of this paper is to evaluate the relative efficiency of research activities performed in 19 government funded research institutes. CCR/BCC model and DEA/AR model were applied to get the relative efficiency of 19 institutes. Assurance regions for the weight of output attributes were obtained by using the underlined concept of the analytic hierarchy process (AHP). We used input and output data items describing research activity of 19 government funded research institutes. The results of this study are expected to become a basis of the R&D investment decision of the government.

중국의 해양생명공학 연구개발 최근 동향 (Recent Trend of Research Activity on Marine Biotechnology in China)

  • 김상진
    • Ocean and Polar Research
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    • 제26권2호
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    • pp.165-172
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    • 2004
  • Research activities on the fields of marine biotechnology becomes active not only in developing countries but also in Asian countries. Among those countries China recently initiate the national marine biotechnology R&D program. Since 1996, marine biotechnology has been approved to be a subject of the National High Technology Research and Development Program of China as 863 program. In the first five years from 1996 to 2000 and successively in the second five years from 2001 to 2005, Marine Biotechnology R&D 863 program has been funded by Chinese government with 97.5 million RMB and then more than 200 million RMB, respectively. Under this program there are mainly six R&D subjects of marine biotechnology; 1. Breeding engineering, 2. Control of the disease, 3. Production system and culture facilities, 4. Marine drug and bioproducts, 5. Functional genes and genomics, 6. Breeding of the saltresistant plants. In this paper the research activities and results of 863 program were introduced, and from chinese cases we could leam how we plan and perform the marine biotechnology program of Korea in future.