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        검색결과 27

        25.
        2000.04 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        반응성 이온 식각과 산화막을 이용한 첨예화 공정을 통하여 균일한 실리콘 팁 어레이를 제작한 후, 그 위에 Pd을 증착하여, Pd 코팅이 전계 방출특성에 미치는 영향에 대해 조사하였다. 어레이에 존재하는 표면 산화막을 제거한 후의 전계 방출 특성의 향상은 매우 작았으나, 100Å의 Pd을 코팅한 후에는 30V의 구동전압이 감소하는 등 전계 방출특성이 크게 향상되었다. 이는 Pd 코팅에 의해 팁의 표면 거칠기가 증가하고, 전자가 방출되는 팁 끝부분의 반경이 감소하였기 때문이다. 한편 Pd을 코팅한 에미터는 높은 방출 전류 영역에서 우수한 동작 안전성을 보였다. 이를 통하여 Pd이 코팅된 실리콘 에미터가 고온에서의 동작과 표면안정성에서 우수한 특성을 보임을 알 수 있었다.
        4,000원
        26.
        1996.12 KCI 등재 SCOPUS 구독 인증기관·개인회원 무료
        The imaging spectroscopic observations of the Magellanic irregular galaxy NGC 4449 were made to show the detailed kinematic structure of the galaxy. Many filamentary structures and Several bubble-like structures are recognized in a 3D data cube of H$\alpha$ 수식 이미지 emission line. Velocity field shows the kpc-scale mosaic structure and counter- rotation of ionized gas.
        27.
        2015.06 KCI 등재 서비스 종료(열람 제한)
        The process that a new energy policy introduces and merges into the formal social system is an important but difficult journey for the transition to the low carbon society. Meanwhile, the government was obliged to allocate carbon emission reduction, the companies are called obligatory participants through emissions trading scheme were building an internal greenhouse gas reduction system to reduce Risk and to respond this new system. However, the internal response and reduction system of the Waste Field are easy to exposure to the ETS Risk because the local government employee is unaware of the ETS. Thus, it is necessary to establish a framework for rational decision making institutions through analyzing the existing system of greenhouse gas energy target management system. This study was predicted for the first phase emissions trading allowances based on excess or deficiency received through the 2015 quota allocation applications and explained the process proceeded in greenhouse gas energy target management system by the Jeju Special Self-case analysis of the waste sector, predicted potentially losses cost during the first phase in the emissions trading credits that are traded on the KRX market price. Furthermore, throughout the sensitivity analysis of major waste process parameter suggested the internal system to reduce greenhouse gas emissions directly as well as external policies by the direct participation of citizens through the local recycling center expansion. After all, this study suggested the need for the construction of internal and external system corresponding to these systemic risk.
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