• The Science & Technology
• /
• v.27 no.5 s.300
• /
• pp.7-10
• /
• 1994

본지는 지령 300호를 맞이하여 우리나라 과학기술행정의 책임자인 김시중 과기처장관과 4월7일 과기처장관실에서 특별인터뷰를 가졌다. 민영기 본지 편집위원(경희대 교수)과의 대담을 통해 김시중장관은 우리나라 기초과학진흥책에서부터 북한핵문제에 이르기까지 평소 과학기술행정철학에 대해 소상하게 밝혔다.

• JOURNAL OF ELECTRICAL WORLD
• /
• no.9 s.10
• /
• pp.15-18
• /
• 1976

석탄이나, 석유, 우라늄 같은 자원은 한계가 있다. 지구상의 인류가 존재하는 데에 필요한 에너지원의 문제를 해결하기 의해서는 해수중의 중수를 연료로하여 조그만 태양같은 것을 지구위에 만들어 놓으면 된다. 이것의 핵융합로인데 약 100억년이나 공급할 수 있다는 계산이 된다. 기술적으로는 어렵겠으나 지금까지 이 연구실적으로 우리나라도 세계의 제1선과 나란히 자주개발이 가능한 것이다.

• Journal of Scientific & Technological Knowledge Infrastructure
• /
• s.8
• /
• pp.26-35
• /
• 2002

초기 컴퓨터는 주로 원자핵물리와 관련된 계산에 사용되었으나 곧바로 컴퓨터의 도움을 받아 물리 문제를 해결하고자 하는 방법은 물리 전 분야에서 광범위하게 적용되었다. 물질의 가장 작은 요소를 찾고자하는 소립자물리학에서부터, 물질의 성질을 규명하는 응집물질물리, 나아가서 거대 우주의 구조를 밝히고자 하는 우주론에 이르기까지 컴퓨터의 사용이 확장되고 있다.

• The Science & Technology
• /
• v.10 no.5 s.96
• /
• pp.11-14
• /
• 1977

핵연료 플루토늄의 재처리 ,고속증식로건설 중단의 문제가 정치적으로 문제화 되자 카터 미국대통령은 지난4월8일 핵의 평화적인 이용에 관한 새로운 정책을 발표한바 있다. 특히 핵무기의 확산을 금지시키려는 미국의 굳은 결의가 이 정책에서 짙게 나타나있다. 카터 미대통령이 제시한 7개항중 5개항을 소개하면 다음과 같다.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
• /
• v.7 no.3
• /
• pp.143-151
• /
• 2009

Due to a more favorable climate in the recent relationship between U.S. and North Korea, North Korea nuclear issue is expected to enter the new phase of nuclear verification. From now on, our government should make preparation for taking the appropriate steps against the situation developed after the declaration by North Korea. Therefore, this paper is to identify the problems that may be occurred in the process of verifying and dismantling North Korea's nuclear program and to suggest the policy considerations that should be incorporated in establishing the action plan for verifying and dismantling her nuclear program, based on the analysis of experiences to verify and dismantle the WMDs in the former Soviet Union and in Iraq, respectively.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.1 no.1
• /
• pp.128-144
• /
• 1998

The BEM for linear elastic stress analysis is applied to the highly rotating axisymmetric body problem which also involves the thermoelastic effects due to steady-state thermal conduction. The axisymmetric BEM formulation is briefly summarized and an alternative approach for transforming the volume integrals associated with such body force kernels into equivalent boundary integrals is described in a way of using the concept of inner product and vector identity. A discretization scheme for higher order BE is outlined for numerical treatment of the resulting boundary integral equations, and it is consequently illustrated by determining the stress distributions of the turbine rotor disk of the small turbojet engine(ADD 500) for which a FEM stress solution has been furnished by author.

• The Bulletin of The Korean Astronomical Society
• /
• v.44 no.1
• /
• pp.60.2-60.2
• /
• 2019

북한은 과학기술중시정책을 추진하면서 과학기술 우대환경을 조성하고, 전민과학기술 인재화 및 과학교육 강조 그리고 새 세기 산업혁명을 내세우며 자력갱생과 경제 발전을 위한 과학기술의 도구적 입장을 가지고 있다. 특수부문에서 강점을 가지고 있고, 기초과학 부문 및 정보기술영역에서 성과를 보여주고 있고, 국제학술활동에도 참여하는 등 얼마간의 대외 개방성도 나타내고 있다. 핵문제 즉 비핵화의 과제가 남아 있으나 남북 정상회담과 북미정사회담을 통해 남북교류협력의 여건이 나아지고 있고, 과학기술계 정부출연연구기관 소속의 연구자들이 북한연구과 남북협력을 준비한다. 대북 재제의 여건하에서 활성화될 수는 없으나 남북 과학자간 학술대회를 개최하고, 백두산연구기지 설립으로 백두산 지진 뿐만 아니라 천문 연구와 천연물, 광물 개발 등을 제안하였다. 앞으로는 남북과학기술협력센터 설립을 검토하고 보다 다양한 남북 과학기술 협력을 위한 기반 조성을 위한 향후 계획을 논한다.

• Journal of Energy Engineering
• /
• v.13 no.1
• /
• pp.51-59
• /
• 2004

The NSSS (Nuclear Steam Supply System) thermal-hydraulic programs adopted in the domestic full-scope power plant simulators were provided in early 1980s by foreign vendors. Because of limited compulsational capability at that time, they usually used very simplified physical models for a real-time simulation of NSSS thermal-hydraulic transients, which entails inaccurate results and, thus, the possibility of so-called "negative training", especially for complicated two-phase flows in the reactor coolant system. In resolve the problem, KEPRI developed a realistic NSSS T/H program ARTS which was based on the RETRAN-3D code for the improvement of the Nuclear Power Plant full-scope simulator. The ARTS (based on the RETRAN-3D code) guarantees the real-time calculations of almost all transients and ensures the robustness of simulations. However, there is some possibility of failing to calculate in the case of large break loss of coolant accident (LBLOCA) and low-pressure low-flow transient. In this case, the backup calculation system cover automatically the ARTS. The backup calculation system was expected to provide substantially more accurate predictions in the analysis of the system transients involving LBLOCA. The results were reasonable in terms of accuracy, real-time simulation, robustness and education of operators, complying with FSAR and the AMSI/ANS-3.5-1998 simulator software performance criteria.

• Journal of radiological science and technology
• /
• v.35 no.4
• /
• pp.353-360
• /
• 2012

Diverse designs of collimator have been applied to Single Photon Emission Computed Tomography (SPECT) according to the purpose of acquisition; thus, it is necessary to reflect geometric characteristic of each collimator for successive image reconstruction. This study carry out reconstruction algorithm for imaging system in nuclear medicine with pinhole collimator. Especially, we study to solve sampling problem which caused in the system model of pinhole collimator. System model for a maximum likelihood expectation maximization (MLEM) was developed based on the geometry of the collimator. The projector and back-projector were separately implemented based on the ray-driven and voxel-driven methods, respectively, to overcome sparse sampling problem. We perform phantom study for pinhole collimator by using geant4 application for tomographic emission(GATE) simulation tool. The reconstructed images show promising results. Designed iterative reconstruction algorithm with unmatched system model effective to remove sampling problem artefact. Proposed algorithm can be used not only for pinhole collimator but also for various collimator system of imaging system in nuclear medicine.

• Korean journal of communication and information
• /
• v.25
• /
• pp.7-40
• /
• 2004

Today, nuclear energy conflict is caused from the dangerous radioactive material. The main party of this conflict are politic and economic systems which deride nuclear energy, and the persons concerned which it oppose and the anti-nuclear environment group. If the nuclear waste is transported from one nation to another nation, multi national anti-nuclear group appears as conflict party. We call this domestic and transnational risk communication new social movement. From the viewpoint of system theory, the new social movement can mean the offensive development of self-reference which withstand the "technicalization of communication" through the "symbolically generalized communication media" like money and power. By comparing Northeast Asia and Europe, the nuclear energy conflict did not show a big difference in the selection of nuclear waste storing site. In the Northeast Asia, when Taiwan exports the nuclear waste to North Korea, the international conflict broke out. In Europe, Germany has a hard experience with the construction-plan for the re-treating plant that produces the plutonium from the dangerous nuclear waste, and with the transnational transport of the nuclear waste. The new social movement aims the global paradigm which is able to guarantee the subtainability of ecological environment. The nuclear conflict in the "world risk society" is solved through the "discourse-alliance" which accomplishes sub-politics by crossing the border of class, nation and system.