• 정보관리연구
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• 제37권4호
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• pp.161-180
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• 2006

이 연구는 중국, 중앙아시아의 우즈베키스탄과 카자흐스탄 그리고 러시아에서 거주하는 한인 관련 한글 정보자원관리 현황을 조사하여 분석하였다. 이 결과를 토대로 한글 정보자원 현황과 정보 자원관리시스템을 구축한 것이다. 연구결과에 대한 주 내용은 1)중국, 중앙아시아와 러시아에서 한글 정보자원분포와 매체의 현황 2)한글 정보자원관리기관 현황 3)중국과 러시아의 문헌분류표 4)정보자원시스템 구축 기본계획과 시스템 구현으로 이루어졌다.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제9권1호
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• pp.1-9
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• 2005

This study is to compare contents of mathematics textbooks of Korea and Russia laying stress on the area of polygon. We analyzed and compared descriptions of the concept 'area of polygon' and varification on formula of area of polygon in Korean and Russian mathematics textbooks.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 1997년도 International Symposium on Fire Science and Technology
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• pp.130-137
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• 1997

Intumescent inorganic and organic coatings which dintr one from the other by the type of gas formers and the mechanisms of foam formation have been obtained and investigated. Inorganic intumescent coatings are the compositions based on water glass and mineral additives with different dispersity. Mineral additives contain adsorbed and absorbed water and carbonates which are destructed with the carbon dioxide and water evolution during the flame action on coating. The decreasing of mineral additives particle sizes under the mechanical milling with the fraction precipitation promotes the foam coke formation with less defects. Here the main structure of comparing compositions does not change. In organic coatings based on epoxy-polymers the polyammonium phosphate additive is used. It is the cabonization catalyst and the foam agent. The polyammonium phosphate of various dispersity employed is uniformly distributed on the polymeric matrix. The decreasing of the particle sizes leads to the increasing of the fire resistant properties of the intumescent coa-ting. The fire resistant analysis of the coating during more than an hour: the coating back side the temperature on plastic or wooden materials does not exceed 423K, and on metal-573K.

• 융합보안논문지
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• 제23권5호
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• pp.165-172
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• 2023

국가간에 이루어지는 사회공학 공격은 주로 비밀정보, 외교의 협상 또는 미래의 정책 변경에 대해 우위를 확보하기 위해 매우 효율적인 공격이므로 꾸준히 실시되고 있다. 우크라이나-러시아 전쟁이 장기화함에 따라 글로벌 해킹 조직의 활동이 꾸준히 증가하고 있으며, 주요 기반시설 또는 글로벌 기업 대상의 대규모 사이버공격 시도가 지속되므로 이에 대한 대응전략이 필요하다. 이를 위해 다양한 사회공학 공격 모델 중 물리적인 접촉을 배제한 사회공학 사이클이 가장 적합한 모델이라 판단하여 주요 위협국이 선호하는 사회공학 공격 방법을 사례분석을 통해 지정학적 전술과 비교하여 분석하였다. 그 결과 중국은 인해전술과 같은 질보다 양을 선호하는 피싱공격을 러시아는 마치 첩보전을 연상하는 은밀하고 복잡한 스피어 피싱을 선호하며, 북한은 미국과 한국에 대한 공격은 스피어 피싱과 워터링홀로 지정학적 전술을 응용하여 활용하였고 그 외 국가들은 대부분 랜섬웨어로 자금확보를 목표로 하였다. 이에 따라 중국에는 클린패스 정책, 러시아에는 주기적인 의무교육, 북한에는 국제적인 제재 등을 대응전략으로 제시하였다.

• 월간포장계
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• 통권343호
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• pp.60-62
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• 2021

• 한국분말재료학회지
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• 제30권4호
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• pp.324-331
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• 2023

Lithium (Li) is a key resource driving the rapid growth of the electric vehicle industry globally, with demand and prices continually on the rise. To address the limited reserves of major lithium sources such as rock and brine, research is underway on seawater Li extraction using electrodialysis and Li-ion selective membranes. Lithium lanthanum titanate (LLTO), an oxide solid electrolyte for all-solid-state batteries, is a promising Li-ion selective membrane. An important factor in enhancing its performance is employing the powder synthesis process. In this study, the LLTO powder is prepared using two synthesis methods: sol-gel reaction (SGR) and solid-state reaction (SSR). Additionally, the powder size and uniformity are compared, which are indices related to membrane performance. X-ray diffraction and scanning electron microscopy are employed for determining characterization, with crystallite size analysis through the full width at half maximum parameter for the powders prepared using the two synthetic methods. The findings reveal that the powder SGR-synthesized powder exhibits smaller and more uniform characteristics (0.68 times smaller crystal size) than its SSR counterpart. This discovery lays the groundwork for optimizing the powder manufacturing process of LLTO membranes, making them more suitable for various applications, including manufacturing high-performance membranes or mass production of membranes.

• Ocean and Polar Research
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• 제24권4호
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• pp.325-329
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• 2002

Concentrations of Fe, Mn, Zn, Cu, Pb and Cd in two seaweed species (Sargassum miyabei and S. pallidum) from different areas in Amursky Bay near Vladivostok were determined. An assessment of heavy metal pollution in this bay was made and the results were compared with those from some localities in the world ocean.

• Strategy21
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• 통권43호
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• pp.29-55
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• 2018

Arctic sea ice has been retreating as a result of the global warming. Arctic sea ice extent for April 2018 averaged 13.71 million square kilometers. This figure shows far less sea ice compared to the average extent from 1981 to 2010. Meanwhile, 287 times of maritime transits through the Northwest Passage have been made during the 2017 and the first ship traversed the Northern Sea Route without the assistant of ice-breaker in August 2017. Commercialization of the Arctic Passage means significant economic and strategic advantages by shortening the distance. In this article, 'Arctic Passage' means Northern Sea Route along the Arctic coast of Russia and Northwest Passage crossing Canadian Arctic Ocean. As climate changes, the potential feasibility of the Arctic Passage has been drawing international attention. Since navigation in this area remains hazardous in some aspects, IMO adopted Polar Code to promote safe, secure and sustainable shipping through the Arctic Passage. Futhermore, Russia and Canada regulate foreign vessels over the maritime zones with the authority to unilaterally exercise jurisdiction pursuant to the Article 234 of UNCLOS. The dispute over the navigation regime of the arctic passage materialized with Russia proclaimed Dmitrii Laptev and Sannikov Straits as historically belong to U.S.S.R. in the mid 1960s and Canada declared that the waters of the passage are historic internal waters in 1973 for the first time. So as to support their claims, In 1985, Russia and Canada established straight baseline including Northern Sea Route and Northwest Passage. The United States has consistently protested that the Northern Sea Route and Northwest Passage are straits used for international navigation which are subject to the regime of transit passage. Firstly, it seems that Russia and Canada do not meet the basic requirements for acquiring a historic title. Secondly, since the Law of the Sea had adopted before the establishment of straight baseline over the Russian Arctic Archipelago and the Canadian Arctic Archipelago, Ships can exercise at least the right of innocent passage. Lastly, Northern Sea Route and Northwest Passage have fulfilled the both geographical and functional criteria pertaining to the strait used for international navigation under the international law. Especially, should the arctic passage become commercially viable, it can be expected to accumulate the functional criterion. Russia and Canada regulate the ships navigate in their maritime zones by adopting the higher degree of an environmental standard than generally accepted international rules and standard mainly under the Article 234 of UNCLOS. However, the Article 234 must be interpreted restrictively as this contains constraint on the freedom of navigation. Thus, it is reasonable to consider that the Article 234 is limited only to the EEZ of coastal states. Therefore, ships navigating in the Arctic Passage with the legal status of the territorial sea and the international straits under the law of the sea have the right of innocent passage and transit passage as usual.

• 문화기술의 융합
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• 제10권3호
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• pp.25-29
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• 2024

NATO는 러시아-우크라이나 전쟁 이후 그동안 유지해오던 평화유지 전략에서 탈피하고 다자안보협의체 강화, 전략적 안정성 추구, 군비 확충, 협력안보 및 인도-태평양 지역까지 대화·협력을 강화할 것을 천명하였다. NATO의전략 변화는 직·간접적으로 한국의 안보환경에 영향을 미친다. 이를 명확히 분석하고 대응할 수 있는 정책 및 전략을수립해야 위협을 억제하고 국가이익을 보호할 수 있다. NATO는 중국과 러시아를 위협으로 명시하고 있다. 우리는NATO와 협력과 연대를 기회로 삼아 소다자 안보협력 및 동맹 강화, 방산시장 개척 및 확대, 우크라이나 재건사업참여 기회 확대를 얻을 수 있을 것이다.

• Fisheries and Aquatic Sciences
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• 제10권4호
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• pp.186-190
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• 2007

We examined the genetic variability of Asian chum salmon (Oncorhynchus keta) populations using nuclear microsatellite (ms) DNA analysis with four polymorphic loci (OKM4, OKM5, OKM7, and OKM8) in 397 individuals from nine populations, including one in Korea, seven in Japan, and one in Russia. The msDNA gene diversity was highest in the Japanese populations, suggesting greater genetic variation in the populations in Japan than in populations in Korea and Russia. The pairwise $F_{ST}$ estimates based on our msDNA data showed that the Korean population was genetically different from the Japanese and Russian populations, and there were higher $F_{ST}$ estimates between Hokkaido and Honshu populations than between other population pairs. A neighbor-joining tree showed that the Korean population was distinct from two other clusters, representing the populations in Honshu and the populations in Hokkaido and Russia. These results suggest that the observed population genetic patterns of Asian chum salmon might be influenced by low or restricted gene flow.