• Information and Communications Magazine
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• v.30 no.1
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• pp.39-45
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• 2012

본고에서는 제4의 물결이라 일컬어지는 스마트혁명과 새로운 ICT 패러다임 변화를 중심으로 우리나라 국가정보화의 새로운 전략 방향을 제시한다. 또한, 현재 우리 사회가 직면한 사회문제들을 보다 효과적이고 새롭게 해결하기 위한 ICT 기반의 핵심전략들을 제시하였으며, 이를 통해 현 시대 상황에 맞춘 ICT의 역할을 재조명 하고자 한다.

• Journal of Scientific & Technological Knowledge Infrastructure
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• s.12
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• pp.78-81
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• 2003

통합 이후 2년 동안 KISTI는 지속적인 노력을 통해 정보유통의 기반을 축적해 가면서 새로운 변화와 도약을 준비해 왔다. 정보유통은 변화하는 사회시스템과 함께 끊임없는 변화를 추구해야 하는 분야이다. KISTI의 역할도 정보유통을 통한 사회적인 효과와 기여를 위해 정보유통 기관이 수행해야 할 새로운 영역이 무엇인가를 고민하고, 개발하여 적용 및 확산해 나가는 노력을 통해 지속적으로 진화되어 나가야 할 것이다.

• The Journal of Information Technology
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• v.4 no.3
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• pp.139-154
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• 2001

In current role-based systems, security officers handle assignments of users to roles. This may increase management efforts in a distributed environment because of the continuous involvement from security officers. The technology of role-based delegation provides a means for implementing RBAC in a distributed environment with empowerment of individual users. The basic idea behind a role-based delegation is that users themselves may delegate role authorities to other users to carry out some functions on behalf of the former. This paper presents a rule-based framework for user-level delegation model in which a user can delegate role authority by creating new delegation roles. Also, a rule-based language for specifying and enforcing the policies is introduced.

• The Korean Journal of Quaternary Research
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• v.25 no.2
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• pp.1-15
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• 2011

The ODP (Ocean Drilling Program) has been greatly contributed to the progress of Earth Science through the strong international cooperation with its name changed from DSDP DSDP(Deep Sea Drilling Program), IPOD (International Phase of Ocean Drilling) to IODP (Integrated Ocean Drilling Program). The IODP program which was launched about ten years ago will continue to develop toward the 2nd phase of scientific targets through the tight international cooperation. Distinguished scientific results from the various expedition as well as new phase of IODP structure and its important role that enhance the new scientific fields are summarized in this study. In particular, Arctic Expedition and deep-biosphere and high resolution climatic study that was not performed in previous ODP stages, will be extensively conducted in coming new 2nd IODP stages. Likewise, through strong international cooperation, it is expected that IODP would play an important role in Earth Science developments.

• Journal of Navigation and Port Research
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• v.27 no.2
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• pp.217-221
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• 2003

In this work, we used a novel RF-CSP to develop a broadband amplifier MMIC, including all the matching and biasing components, for Ku and K band applications. By utilizing an ACF for the RF-CSP, the fabrication process for the packaged amplifier MMIC could be simplified and made cost effective. STO (SrTiO$_3$) capacitors were employed to integrate the DC biasing components on the MMIC. A pre-matching technique was used for the gate input and drain output of the FETs to achieve a broadband design for the amplifier MMIC. The amplifier CSP MMIC exhibited good RF performance (Gain of 12.5$\pm$1.5 dB, return loss less than -6 dB, PldB of 18.5$\pm$1.5 dBm) over a wide frequency range. This work is the first report of a fully integrated CSP amplifier MMIC successfully operating in the Ku/K band.

• Issues in Feminism
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• v.9 no.1
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• pp.79-111
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• 2009

This paper analyses the stories of 38 women of the in-depth survey, enforced by the Institute for Gender Research, Seoul National University. This survey focused on motherhood, but many memories were told by most of women. That shows strong existence of fatherhood in the process of personality formation in Korean society. The stories of 38 women could be divided into 5 types: (1) 5 cases where there is no mention about father; (2) 5 cases where simple and negative mentions are made about fathers; (3) 6 cases where no instrumental fatherhood but expressive fatherhood is found; (4) 11 cases of women who experienced both instrumental and expressive fatherhood, and (5) 12 cases (1 case is overlapped with one of the 3rd type) where the relationship between daughter and father is very close. The analyses denies the dichotomy of instrumental and expressive fatherhood, and the theories of "New Men" with expressive fatherhood who appeared as a result of social change and feminist movement. It also shows the various aspects of expressive fatherhood, and that close relationship between father and daughter plays an important role for the empowerment of daughter.

• Prospectives of Industrial Chemistry
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• v.24 no.2
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• pp.22-30
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• 2021

현재 인류는 플라스틱(plastic) 세상에 살고 있다. 의류, 식품, 주거 생활 곳곳에 플라스틱이 존재하며, 플라스틱이 없는 세상은 상상조차 할 수 없다. 하지만, 플라스틱 사용량 증가에 따른 폐플라스틱의 배출량의 증가는 심각한 환경문제들을 야기하여 생태계뿐만 아니라 인간에게도 위협이 되고 있다. 이를 해결하기 위한 방법으로 단순히 폐플라스틱의 처리에 그치지 않고, 이를 활용하여 새로운 고부가가치의 생성물을 제조하는 플라스틱 업사이클링(plastic upcycling) 시스템이 최근 주목을 받고 있으며, 현재 다양한 형태로 연구개발이 진행되고 있다. 그 중의 한가지로 본 기고문에서는 알칸 교차 복분해(cross alkane metathesis) 반응을 소개한다. 알칸 교차 복분해 반응은 수소화/탈수소화(hydrogenation/dehydrogenation) 반응과 올레핀 복분해(olefin metathesis) 반응으로 이루어져, 탈수소화 반응 후 생성된 이중결합 탄소를 갖는 두 개의 알켄 화합물이 자리바꿈을 통해 새로운 이중 결합을 형성하는 반응이다. 이 촉매반응 과정이 반복되면 저분자화된 새로운 알칸 화합물을 생성되는데, 이는 기존의 플라스틱 처리방식인 열분해 및 촉매 분해 공정보다 낮은 반응온도를 요구한다. 또한 이를 통해 상대적으로 높은 순도의 가솔린 및 디젤을 생성할 수 있기 때문에 폐플라스틱 처리 공정의 새로운 대안기술이 될 수 있다. 본 기고문에서 폐플라스틱 중 가장 큰 비중을 차지하는 폴리에틸렌을 처리하는 대안기술로써 알칸 교차 복분해 반응의 메커니즘과 및 촉매의 역할, 그리고 반응성에 영향을 주는 인자에 대해 기술한다.

• KLA journal
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• v.48 no.10 s.388
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• pp.28-31
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• 2007

• Korean Architects
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• no.5 s.313
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• pp.20-21
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• 1995

• Journal of the korean veterinary medical association
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• v.48 no.5
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• pp.292-299
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• 2012