• Information and Communications Magazine
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• v.27 no.4
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• pp.23-30
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• 2010

스마트그리드는 정보통신 기술과 전력망의 융합으로 탄생한 새로운 형태의 차세대 전력망으로, 전력공급의 중추인 스마트그리가 사이버 공격에 피해를 입으면 국가 전력마비와 같은 큰 피해를 입게 될 것이다. 실제 최근 전력망에 대한 사이버 공격 위협이 증가하고 있고 실제 공격 사례도 지속적으로 보고되는 등 스마트그리드에 대한 사이버 보안 위협은 간과할 수준의 것이 아니다. 이에 본 논문에서는 스마트그리드에 대한 사이버 보안 위협과 스마트그리드 사이버 보안성 강화를 위한 국내 외의 다양한 노력에 대하여 살펴보고, 국내 스마트그리드의 보안성 강화를 위해 향후 서둘러 수행해야 할 사이버 보안 대응 방안을 제시한다.

• Proceedings of the Korean Society of Food Hygiene and Safety Conference
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• 2002.05a
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• pp.172-173
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• 2002

• 대한임상약리학회:학술대회논문집
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• 1998.12a
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• pp.72-72
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• 1998

• Proceedings of the Korean Society of Food Hygiene and Safety Conference
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• 2004.05a
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• pp.240-240
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• 2004

• Proceedings of the Korean Society of Food Hygiene and Safety Conference
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• 2004.05a
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• pp.246-246
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• 2004

• Review of KIISC
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• v.7 no.2
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• pp.35-54
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• 1997

본 고에서는 행정, 교육, 과학기술, 금융, 국방, 공안, 외교 및 물류 등의 전산망을 위한 통합적인 보안 해결책 및 초고속정보통신망을 위한 보안 해결책을 제시하기 위한 일환으로 미국 NSA가 주도하여 수행하고 있는 MISSI에 대하여 소개를 한다. MISSI는 다중등급 보안을 근간으로 하고 있으며 무결성, 사용자 신분확인, 부인봉쇄, 비밀성 및 가용성 등의 보안 서비스를 제공하고 있다. 이들 보안 서비스를 위하여 Firewall, Fortezza, Guard 및 안전한 컴퓨터와 같은 상용의 보안 제품을 사용할 수 있도록 하고 있다. 본 고는 국가 전산망 및 초고속정보통신망의 효과적인 보안 해결책으로써의 지침을 제공해 주리라 생각된다.

• Review of KIISC
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• v.12 no.6
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• pp.21-30
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• 2002

정보전의 개념이 도입된 90년대 중반이후 세계 각 국에서는 사이버 공간을 이용한 다양한 사이버 위협을 대처하기 위한 많은 노력을 기울이고 있다. 그러나, 9ㆍ11 테러를 겪으면서 미국을 비롯한 각 국에서는 사이버공간을 이용한 사이버테러 및 사이버전이 국가안위를 위태롭게 할 수 있다는 인식하에 기존 보안정책을 강화하거나 새로운 보안정책을 계획하거나 시행하고 있다. 본 논문에서는 미국, 일본 등을 중심으로 한 사이버 공간의 안전성 확보를 위한 최근의 노력을 소개하고자 하며, 우리나라의 사이버 공간 안전성 확보를 위한 참고자료로 활용되었으면 한다.

• Journal of The Korean Society of Grassland and Forage Science
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• v.27 no.2
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• pp.79-84
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• 2007

This study was carried out to investigate the effects of growing period and cultivars on physiological characteristics and photosynthetic rates of kenaf in Cheorwon, Korea, The possibility of their utilization as forage plant was also discussed. A split plot design composing 3 growing periods (53, 84 and 115 days after sowing) and 3 cultivars (Dowling, Everglade-41 and Tainung-2) was applied for this experiment. Leaf photosynthetic rate was highest 28.6 $CO_2{\mu}mol\;m^{-2}s^{-1}$ in Everglade-41 at the beginning of August when solar irradiation was most intense. In the final biomass of kenaf, Dowing wa the highest among cultivars, with 534.6g/F.W./plant and 109.6g/D.W./plant, respectively. In addition, Dowling was the best in stem thickness among cultivars evaluated. Our results exhibited that all cultivars planted in Cheorwon exhibited decreased yield production compared to a previous report experimented in Jaeju. It may result that cultivation in Jaeju utilized wider planting space and longer cultivating time. In the basis of our data, it is suggest that extending cultivation time and using wider planting space should increase yield in Cheorwon with potential utilization of kanef as a forage crop.

• The Journal of Engineering Geology
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• v.33 no.2
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• pp.257-273
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• 2023

Hydrochemical characteristics and microbial communities of spring (Samtong), surface water, and groundwater in Cheorwon, Korea, were analyzed. Field surveys and water quality analyses were undertaken at 10 sampling points for five spring, two surface, and three groundwater samples on 15 December 2022. Hydrochemical analysis revealed that most water samples were Ca-HCO₃ type and that water-rock interactions were the predominant mineral source. Radon concentrations were <1 kBq m^-3 for surface water, 1~10 kBq m^-3 for spring water, and 1~1,000 kq m^-3 for groundwater. Microbial cluster analysis showed that the main phyla were Proteobacteria, Planctomyceta, Verrucomicrobia, Acidobacteria, and Actinomycetota.Non-metric multidimensional scaling (NMDS) analysis indicated that water temperature, pH, and Si content were closely related to microorganism content. NMDS and canonical correspondence analysis results revealed that environmental factors affecting spring water were temperature, and Mg and Si concentrations, particularly for Acidobacteria and Proteobacteria, and Pseudomonas brenneri. Both hydrochemical and microbial community analyses yielded similar results at some spring and groundwater sampling points, likely due to the effects of a basalt aquifer.

• Korean Journal of Heritage: History & Science
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• v.54 no.2
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• pp.38-55
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• 2021

Cherwon Castle is located in Pungcheonwon, Cherwon, in the center of the Korean Peninsula. Currently, it is split across the Demilitarized Zone (DMZ) between the two Koreas. It attracts attention as a symbol of inter-Korean reconciliation and as cultural heritage that serves as data in making important policy decisions on the DMZ. Despite its importance, however, there has not been sufficient investigation and research done on Cherwon Castle. This is due to the difficulty involved in investigation and research and is caused by the site's inaccessibility. As a solution, the current investigative methods in satellite and aerial archeology can be applied to interpret and analyze the structure of Cherwon Castle and the features of its inner space zoning. Cherwon Castle was built on the five flat hills that begin in the northern mountainous hills and stretch to the southwest. The inner and outer walls were built mainly on the hilly ridges, and the palace wall was built surrounding a flat site that was created on the middle hill. For each wall, the sites of the old gates, which were erected in various directions , have been identified. They seem to have been built to fit the direction of buildings in the castle and the features of the terrain. The castle was built in a diamond shape. The old sites of the palace and related buildings and landforms related to water drainage were identified. It was verified that the roads and the gates were built to run from east to west in the palace. In the spaces of the palace and the inner castle, flat sites were created to fit different landforms, and building sites were arranged there. Moreover, the contour of a reservoir that is believed to be the old site of a pond has been found; it lies on the vertical extension of the center line that connects the palace and the inner castle. Between the inner castle and the outer castle, few vestiges of old buildings were found, although many flat sites were discovered. Structurally, Cherwon Castle is rotated about nine degrees to the northeast, forming a planar rectangle. The planar structure derives from the castle design that mimics the hilly landform, and the bending of the southwestern wall also attests to the intention of the architects to avoid the wetland. For now, it is impossible to clearly describe the functions and characters of the building sites inside the castle. However, it is believed that the inner castle was marked out for space for the palace and government offices, while the space between the outer and inner castle was reserved as the living space for ordinary people. The presence of the hilly landform diminishes the possibility that a bangri (grid) zoning system existed. For some of the landforms, orderly zoning cannot be ruled out, as flat areas are commonly seen. As surveys have yet to be conducted on the different castles, the time when the walls were built and how they were constructed cannot be known. Still, the claim to that the castle construction and the structuring of inner spaces were inspired by the surrounding landforms is quite compelling.