• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.283-284
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• 2021

최근 SARS-CoV-2 백신들의 예방접종이 진행됨에 따라 코로나 19 팬데믹의 종결이 예상되고 있다. 하지만 계속해서 출현 중인 변종 바이러스들은 팬데믹 종결의 위험요소로 남아있다. 본 논문에서는 사전학습된 단백질 BERT와 단백질-단백질 상호작용 모델을 활용한 SARS-CoV-2 스파이크 단백질의 변이 예측 분석 알고리즘을 제안한다. 제안하는 기술은 변이 단백질 서열의 예측과 변이 단백질과 human ACE2 수용체의 친화도에 따른 자연선택으로 이루어진다. 이를 통해 시간이 지나며 나타날 수 있는 변종 바이러스들을 시뮬레이션 할 수 있어 변종 바이러스들의 해결에 기여할 것으로 기대된다.

• Korean Journal of Plant Resources
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• v.18 no.3
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• pp.479-489
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• 2005

The floras of Jisimdo, Naedo and Yundoldo around Koje Island were investigated 3 times from January 2004 to November 2004. The vascular plants recorded were 165 taxa, 1 forms, 15 varieties, 149 species, 140 genera, 72 families, The rare and endangered plants were recorded as 1 taxa (Quercus gilva Blume), Korean endemic plants were recorded as 2 taxa (1 variety, 1 species, 2 genera, 2 families). The naturalized plants were 10 taxa, 10 species, 10 genera, 6 families, $3.52\%\;and\;6.1\%$ among the total naturalized plants and Urbanization Index in Korea. Anglers and visiter's number is expected to increase fast because nature of Jisimdo, Naedo and Yundoldo, in which kind and number of naturalized plants are forecasted to be increased more.

• Korean Journal of Environmental Biology
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• v.27 no.2
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• pp.216-229
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• 2009

The flora of vascular plants in the Geumgang area (Mt. Guryongsan, Mt. Jeonwolsan, Mt. Samasan, Mt. Yongmeorisan and Mt. Hamrasan) was investigated to suggest strategies for conservation. This study was performed from May 2007 to April 2008, with total 17 times. The Korean endemic species, legally protected species and species to threaten domestic ecosystem species to threaten were grasped on this study. The flora consists of 334 taxa, 86 families 246 genera 297 species 34 varieies and 3 forms in total results from 5 sites in this study. Korean endemic species were confirmed 8 taxa. No rare and endangered species were found in this study. The 2 taxa of the fourth grade of specially designated plants announced the Ministry of Environment were investigated and 8 taxa of the third grade were confirmed. In totally, 24 taxa that are specially designated plants announced the Ministry of Environment including the first and the second grade taxa. 25 taxa of alien naturalized plants were confirmed. The degree of destroy of forest vegetation and reduction of plant diversity in the midstream of Geumgang were in proceeding by construction of multifunctional administrative city and cultivation. It is needed to set up strategies for conservation forest vegetation in this study area.

• Journal of agriculture & life science
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• v.46 no.5
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• pp.11-23
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• 2012

This study was conducted to investigate the distribution of vascular plants in five islands of Jisimdo, Naedo, Yoondoldo, Songdo and Galdo in East Hallyeohaesang National Park. The Islands were surveyed from 2010 to 2011. The flora was classified to as: Jisimdo, 246 taxa; 85 families, 195 genus, 219 species, 3 subspecies, 24 varieties and 2 forma. Naedo, 143 taxa; 72 families, 127 genus, 131 species, 12 varieties. Yoondoldo, 84 taxa; 56 families, 73 genus, 219 species, 1 subspecies, 10 varieties. Songdo, 70 taxa; 33 families, 63 genus, 64 species, 6 varieties and Galdo, 93 taxa; 47 families, 84 genus, 84 species, 1 subspecies, 7 varieties, and 1 forma. Thus, a total of 380 taxa; 105 families, 272 genus, 334 species, 3 subspecies, 39 varieties and 4 forma were observed. A total of 8 and 6 taxa were found to be rare plants in surveyed areas and endemic to Korea, respectively. Distribution of floristic special plants in the surveyed area was divided into five classes (class I-V), 42 taxa; were in class I, 1 taxa; was in class II, 25 taxa; were in class III, 4 taxa; were in class IV and 4 taxa; were in class V. Total floristic special plants were 76 taxa.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.2
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• pp.37-47
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• 2011

In the recent years, malicious codes called malware are having shown significant increase due to the code obfuscation to evade detection mechanisms. When the code obfuscation technique is applied to malwares, they can change their instruction sequence and also even their signature. These malwares which have same functionality and different appearance are able to evade signature-based AV products. Thus, AV venders paid large amount of cost to analyze and classify malware for generating the new signature. In this paper, we propose a novel approach for detecting metamorphic malwares. The proposed mechanism first converts malware's API call sequences to call graph through dynamic analysis. After that, the callgraph is converted to semantic signature using 128 abstract nodes. Finally, we extract all subgraphs and analyze how similar two malware's behaviors are through subgraph similarity. To validate proposed mechanism, we use 273 real-world malwares include obfuscated malware and analyze 10,100 comparison results. In the evaluation, all metamorphic malwares are classified correctly, and similar module behaviors among different malwares are also discovered.

• Korean journal of applied entomology
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• v.24 no.1 s.62
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• pp.45-50
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• 1985

The use of a modified procedure for the isolation of extrachromosomal DNA of low to high molecular weight, followed by agarose gel electrophoresis of the crude lysates, provided a simple screening procedure for detecting plasmids ranging in molecular weights from approximately 1 to more than 135 megadaltons from serovars of Bacillus thuringiensis. The procedure provides for a relatively large-volume stable lysate for isolation of plasmids for restriction endonuclease mapping and cloning procedures. The method was used for screening of plasm ids in 6 differenentially effective serovars of B. thuringiensis toxic to dipteran and lepidopteran insects. Relatively large plasmid DNAs of masses above 50 megadaltons (Mdal) were isolated from all of the serovars examined using this technique. The number of extrachromosomal DNAs detected in serovars of B. thuringiensis was 8 for israelensis, 10 for kurstaki, 13 for aizawai, 2 for dendrolimus, 1 for finitimus, and 6 for yunnanensis. Smaller plasmid DNAs were isolated in four of the six serovars that ranged in mass down to approximately 2 Mdal.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2008.04a
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• pp.74-76
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• 2008

본 조사지역의 식물상은 대평늪에서 51과 98속 104종 11변종 1품종 총 116분류군, 질날늪에서 50과 97속 99종 16변종으로 총 115분류군을 각각 확인하였다. 또한 두 습지에서 환경부지정 멸종위기야생 동식물II급인 가시연꽃과 국외반출 승인대상 식물인 자라풀을 확인하였다. 귀화식물은 대평늪에서 16분류군, 질날늪에서는 15분류군을 기록하였고, 귀화율은 각각 13.8%, 13.0%, 도시화지수는 각각 5.9%, 5.5%로 분석되었다.

• The Korean Journal of Zoology
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• v.35 no.1
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• pp.115-124
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• 1992

1954년 이후 현재까지 북한의 학술잡지에 발표된 분류 및 자연사에 관련된 논문 319편을 분석한 결과, 동물에 관한 것이 174편이었으며, 식물에 관한 것이 144편, 동식물공통이 7편이었다. 조사한 바에 의하면 북한의 분류학자들에 의하여 87종 6아종 4변종 4변형의 신종이 기재되었으며, 19속 262종 7변종 9변형이 북한 미기록종으로 보고되었다. 그리고 백두산의 생물상은 동물이 1,288종, 식물이 약 1,000종이었다.

• Proceedings of the Speleological Society Conference
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• 2001.06a
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• pp.30-38
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• 2001

온달굴이 위치한 충북 단양군 영춘면 하리에 남산줄기와 연한 온달산성일대의 식생을 1999년 3월부터 8월까지 관속식물을 대상으로 조사하고 이중 한국 특산식물, 혐석회식물과 호석회식물의 분포현황을 조사하였다. 1. 온단산성일대에 자생하는 관속식물은 70과 139속 24변종 2품종 153종으로 총 179종류로 조사되었다. 2. 한국특산식물은 3종류였다. 3. 본 조사지역의 호석회식물은 13과 13속 4변종 12종으로 총 16종류였다. 4. 본 조사지역의 혐석회식물은 8과 8속 10종이었다.

• JOURNAL OF ELECTRICAL WORLD
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• s.219
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• pp.36-41
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• 1995