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        검색결과 8

        1.
        2022.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        성인지 감수성을 비롯하여 인권 감수성이 강조되고 있다. 이러한 의식의 변화에 맞게 최근 대학 내 인권 업무를 전담하는 인권기구의 도입이 법제화되었다. 학내 인권센터의 설치 및 운영이 대학의 의무가 된 것이 다. 하지만 대학 인권센터가 법에 따른 형식에 그치지 않고 실질적인 인권 전담 기구로서의 역할을 다하기 위해서는 적절한 조건이 충족되어야 할 것이다. 먼저 객관적·중립적인 인권침해 사건 처리와 관련하여 조직 상의 독립성과 함께 운영상의 독립성을 확보하는 것이 무엇보다 필요하다. 나아가 조직이 신설되는 만큼 이에 대한 적절한 예산 지원과 인력의 충원 역시 적극적으로 검토되어야 한다. 또한 학내 다른 유사 기구, 대표적으로 양성평등상담소와의 관계를 재정립함으로써 업무의 중복과 분절의 문제가 발생하지 않도록 하는 것이 바람직하다. 현재 인권센터 설치·운영 의무의 불이행에 대한 벌칙 규정은 존재하지 않는다. 이러한 점에서 대학 인권센터 법제화의 실효성을 담보하기 위한 방안으로써 인권센터에 관한 사항을 국가 재정지원 사업의 평가 항목으로 편성하거나 대학 알리미 사이트의 공시 항목으로 지정하는 것을 검토해 볼 수 있다.
        6,400원
        2.
        2012.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        이 연구에서는 친환경 선박용 재료로 각광받는 탄소나노물질에 대하여 실험적 연구를 수행하였다. 탄소나노물질의 합성을 위한 열원으로서는 대향류 메탄 화염을 이용하였다. 탄소나노물질 합성을 위한 촉매로서는 페로센을 사용하였다. 합성 특성을 파악하기 위한 주요 파라메타로는 대향류 메탄 화염에 수소의 혼합 비율과 샘플링 위치를 변화시켰다. 탄소나노물질의 성향은 SEM과 TEM 이미지를 이용하여 결정되었다. 실험 결과로서는 수소의 혼합 비율이 증가할수록 탄소나노물질의 생성이 잘 이루어졌다. 또한 대향류 메탄 확산화염 내 탄소나노튜브의 생성을 위한 적정 온도로는 1500 K 정도가 적당하다는 것을 알 수 있었다.
        4,000원
        3.
        2017.12 KCI 등재 서비스 종료(열람 제한)
        This study was conducted to investigate the growth and physiologycal activitis of Aruncus dioicus var. kamtschaticus (Maxim.) H. Hara under the NaCl treatment conditions (0, 100, 200, 300 mM). After 30 days treatment, the growth and physiologycal activitis were investigated. In the growth of plants, the plant height, leaf width, leaf length and ion level were reduced at NaCl treatments of more than 100 mM. The total polyphenol content was decreased by NaCl in a concentrationdependent manner compared to the control group. The contents of total flavonoids did not show any difference at the concentration of 200 mM and 300 mM. However, the content of total flavonoid decreased compared with that of control. In antioxidant activity, the DPPH and ABTS radical scavenging activity and reducing power activity were decreased by NaCl concentration compared to the control. When changes in the content of NO production was monitored by ELISA, production inhibitory effect was 94.5%, 70%, 63%, 56.9% in NaCl concentration of 0, 100, 200, 300 mM, respectively. The growth, ion level, antioxidant and anti-inflammation activity of Aruncus dioicus var. kamtschaticus was reduced at NaCl treatments of more than 100 mM.
        4.
        2014.04 서비스 종료(열람 제한)
        This paper is the result of analysing the Building Register. It describes the ebb and flow about small-scale buildings for 5years. Major cities are rapidly decreasing small-scale buildings. On the other hands, Small and medium-sized cities are monotonic. Currently, All of the Korea buildings are occupied by small-scale buildings up to 82%. So, This researcher suggest that these buildings need to standardized design of structure for preparing earthquake and abnormal climate.
        5.
        2012.12 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        In recent years, a number of missions have been planned and conducted worldwide on the planets such as Mars, which involves the unmanned robotic exploration with the use of rover. The rover is an important system for unmanned planetary exploration, performing the locomotion and sample collection and analysis at the exploration target of the planetary surface designated by the operator. This study investigates the development of mobility system for the rover ground model necessary to the planetary surface exploration for the benefit of future planetary exploration mission in Korea. First, the requirements for the rover mobility system are summarized and a new mechanism is proposed for a stable performance on rough terrain which consists of the passive suspension system with 8 wheeled double 4-bar linkage (DFBL), followed by the performance evaluation for the mechanism of the mobility system based on the shape design and simulation. The proposed mobility system DFBL was compared with the Rocker-Bogie suspension system of US space agency National Aeronautics and Space Administration and 8 wheeled mobility system CRAB8 developed in Switzerland, using the simulation to demonstrate the superiority with respect to the stability of locomotion. On the basis of the simulation results, a general system configuration was proposed and designed for the rover manufacture.
        6.
        2012.12 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        The planetary exploration rover executes various missions after moving to the target point in an unknown environment in the shortest distance. Such missions include the researches for geological and climatic conditions as well as the existence of water or living creatures. If there is any obstacle on the way, it is detected by such sensors as ultrasonic sensor, infrared light sensor, stereo vision, and laser ranger finder. After the obtained data is transferred to the main controller of the rover, decisions can be made to either overcome or avoid the obstacle on the way based on the operating algorithm of the rover. All the planetary exploration rovers which have been developed until now receive the information of the height or width of the obstacle from such sensors before analyzing it in order to find out whether it is possible to overcome the obstacle or not. If it is decided to be better to overcome the obstacle in terms of the operating safety and the electric consumption of the rover, it is generally made to overcome it. Therefore, for the purpose of carrying out the planetary exploration task, it is necessary to design the proper suspension system of the rover which enables it to safely overcome any obstacle on the way on the surface in any unknown environment. This study focuses on the design of the new double 4-bar linkage type of suspension system applied to the Korea Aerospace Research Institute rover (a tentatively name) that is currently in the process of development by our institute in order to develop the planetary exploration rover which absolutely requires the capacity of overcoming any obstacle. Throughout this study, the negative moment which harms the capacity of the rover for overcoming an obstacle was induced through the dynamical modeling process for the rocker-bogie applied to the Mars exploration rover of the US and the improved version of rocker-bogie as well as the suggested double 4-bar linkage type of suspension system. Also, based on the height of the obstacle, a simulation was carried out for the negative moment of the suspension system before the excellence of the suspension system suggested through the comparison of responding characteristics was proved.
        7.
        2011.09 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        To prepare for a future Korean lunar orbiter mission, semi-optimal lunar capture orbits using finite thrust are designed and analyzed. Finite burn delta-V losses during lunar capture sequence are also analyzed by comparing those with values derived with impulsive thrusts in previous research. To design a hypothetical lunar capture sequence, two different intermediate capture orbits having orbital periods of about 12 hours and 3.5 hours are assumed, and final mission operation orbit around the Moon is assumed to be 100 km altitude with 90 degree of inclination. For the performance of the on-board thruster, three different performances (150 N with Isp of 200 seconds, 300 N with Isp of 250 seconds, 450 N with Isp of 300 seconds) are assumed, to provide a broad range of estimates of delta-V losses. As expected, it is found that the finite burn-arc sweeps almost symmetric orbital portions with respect to the perilune vector to minimize the delta-Vs required to achieve the final orbit. In addition, a difference of up to about 2% delta-V can occur during the lunar capture sequences with the use of assumed engine configurations, compared to scenarios with impulsive thrust. However, these delta-V losses will differ for every assumed lunar explorer's on-board thrust capability. Therefore, at the early stage of mission planning, careful consideration must be made while estimating mission budgets, particularly if the preliminary mission studies were assumed using impulsive thrust. The results provided in this paper are expected to lead to further progress in the design field of Korea’s lunar orbiter mission, particularly the lunar capture sequences using finite thrust.