• Review of KIISC
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• v.20 no.5
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• pp.65-73
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• 2010

로그 데이터는 네트워크 및 보안장비, 서버시스템, DBMS, 서비스 등에서 사용자의 행위를 기록하여 보관하며 있으며, 이를 통해 시스템의 안정적인 운영을 지원하거나, 해킹 등의 불법 침해를 당하였을 때 침입경로 추적과 취약점을 찾아내어 보완할 수 있는 중요한 자료이다. 하지만 로그 데이터는 여러 시스템에 각각 다른 형태로 산재하며 일시적인 기간 동안 저장되어 있거나, 해커에 의해 고의적으로 삭제되기도 하며, 저장 용량 문제로 인해 필요시에 없을 경우가 많다. 본 연구에서는 네트워크 장비와 보안장비의 표준로그인 syslog와 유닉스/리눅스 시스템과 윈도우즈서버의 로그에 대한 특성을 고찰하였으며, 특히 서비스로그로서 아파치 웹서버와 IIS서버의 로그에 대한 특징을 정리하였다. 여러 종류의 시스템에서 발생되는 로그를 통합하여 관리하기 위해서는 이기종 로그 데이터의 생명주기 방법론을 제시하였다. 또한, 최근에 IT보안 사고에 대응하여 규제준수를 요구하고 있는 국내외의 IT컴플라이언스에서 로그에 대한 관련 내용을 살펴보고, 그 준수할 방안을 제시한다. 결론으로 IT 인프라의 보안강화적인 측면과 IT컴플라이언스 준수를 위해, 효율적인 로그에 대한 수집과 보관 및 활용성 측면에서의 이기종의 통합로그관리도입 필요성, 생명주기, 기술적 준비사항, 컴플라이언스 요구사항을 제시한다.

• Landscaping Tree
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• s.109
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• pp.21-22
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• 2009

꽃매미는 1932년 일본의 곤충분류 학자 Doi에 의해 꽃매미(Lycorma delicatula(White, 1845)와 희조꽃매미(Limois Emelianovi Oshanin, 1980) 2종이 보고된 바 있다. 이는 1979년에 발간된 한국동식물도감(문교부)에 있지만 그 동안 표본이 채집되지 않아 한국곤충명집(한국응용곤충학회, 한국곤충학회, 1994)에서 Lycorma delicatula는 제외 시키고 Limois emelianovi 1종만을 꽃매미로 기록하였다. 하지만 2008년 한정민 등 6인 분류학자에 의해 이 종에 대한 형택�F걱 특징과 Cytochrome Oxidase 1 (CO 1)분석을 통해 이종을 꽃매미로 Limois emelianovi를 희조꽃매미로 재분류 보고하여 그동안 주홍날개꽃매미로 불려지던 Lycorma delicatula는 꽃매미로 부르는 것으로 결론났다. 본 해충 꽃매미는 도시 내 조경수 공원 가로수 등에 식재되는 다양한 활엽수에 피해를 주며, 특히 사람들에게 혐오감을 유발하므로 이에 대한 생태 형태와 간략한 방제방법을 소개하고자 한다.

• Ecology and Resilient Infrastructure
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• v.2 no.3
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• pp.191-197
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• 2015

Invasive alien species are considered to be one of the main factors that cause biodiversity loss. Establishment of management strategies through continuous monitoring and risk assessment is a key element for invasive alien species management policy. In the present study, we introduce examples of ecological risk assessment tools developed in Japan, Germany-Austria and Belgium. Invasive alien species have been designated in Japan based on the assessment of risks to ecosystems, human health and primary industry. German-Austrian Black List Information System categorized alien species into Black List, White List and Grey List according to their risks to biodiversity. In the Harmonia Information System developed in Belgium, invasiveness, adverse impacts on native species and ecosystem functions and invasion stages were assessed and alien species were categorized into Black List, Watch List and Alert List. These international risk assessment tools may be helpful to improve our national risk assessment protocol for the prioritization of invasive alien species management.

• Journal of Environmental Impact Assessment
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• v.31 no.1
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• pp.11-46
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• 2022

This study was carried out to examine vascular plants and invasive alien plants in Gyodong Island, located at the northwestern Civilian Control Line (CCL) of Ganghwa-gun, Incheon, and to use them as basic data for systematic management of identified plants and establishing biodiversity conservation measures. The survey was conducted 13 times from April 2019 to August 2021. The vascularflora in Gyodong Island was identified as 109 families, 378 genera, 641 species, 15 subspecies, 49 variants, 8 forma, a total of 713 taxa. This was found to be about 15.36% of the total 4,641 taxa of vascular plants in Korea. The northern linage plants on the Korean Peninsula appearing in the Gyodong Island area were identified in 83 classification groups, including Red-based leaf edge (Carex erythrobasis H.Lev. & Vaniot). Korea endemic plants were identified as 16 taxa such as Seoul wild-ginger [Asarum heterotropoides var. seoulense (Nakai) Kitag.], and a total of 20 taxa of rare plants designated by IUCN were observed, including the endangered grade Beardless iris (Iris ruthenica Ker Gawl.). Floristic target species were classified with a total of 99 taxa. For V grade, Beardless iris 1 taxon was found. and also IV grade and III grade were identified in 8 taxa and 20 taxa respectively. The invasive alien plants identified as 75 taxa, such as Verbesina alternifolia (L.) Britton ex Kearney. The naturalization rate was 10.51%, and the urbanization index was calculated as 23.29%. Since large-scale construction has been currently underway on Hwagae Mt. in Gyodong Island as the target of survey area, the influx of invasive plants will be expected to promote. Therefore, it is urgent to establish in-situ protection and conservation measures for notable plants such as Beardless iris and Water smartweed [Persicaria amphibia (L.) S.F.Gray].

• Korean Journal of Environment and Ecology
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• v.23 no.2
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• pp.116-126
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• 2009

This study was carried out focused an ecological characteristics and habitat management of Abeliophyllum distichum subpopulations in the Byeonsanbando National Park, Korea. Among three subpopulations of the target species in the studied area, Gamaso region are known as translocation site due to the dam construction while the wild populations which is located at both the lower terrain of the Buandaem bank and Chongnim-ni, which is designated as Natural Monument No 370, is threat due to an intensive site management likes clearance of scrub amongst the Abeliophyllum plants. Vascular plant taxa in the studied sites were summarized as 182 taxa; 65 families, 143 genera, 164 species, 17 varieties and 1 form, and Gamaso area, the lower terrain of the Buandaem and Cheongnim-ni areas are summarized as 75, 102 and 89 taxa, respectively. The plant species likes persimmon tree, paulownia tree and wild mulberry tree are dominant species in the Gamaso subpopulation, while Quercus variabilis is dominant at the lower terrain of the Buandaem. The intensive site management was applied to the Cheongnim-ni subpopulation, one of the original wild habitats of the species. The population dymanics was varied; the one or two sprouting number of stems was over 87% both at Gamaso area and the lower terrain of the Buandam, while the Cheongnim-ni subpopulation recorded as 74.8%. Also three sprouting number recorded as 16% and as 9.2% for sprouting on numbers of four to eleven. The invaded species likes Chenopodium album, Rumex obtusifolius, Phytolacca americana, Pharbitis nil, Solanum lyratum, Erigeron canadensis and Erigeron annuus, were found at the wild habitat of the species, and those invaded species grow faster than Abeliophyllum plants. Among three habitats of the target species in the studied area, the habitat which in located at the lower terrain of the Buandam and Gamaso region are known as translocated due to the dam construction, and wild subpopulation at Chongnim-ni, which is designated as Natural Monument No 370, is under threatened due to an intensive site management likes clearance of scrub amongst the Abeliophyllumplants. It is one of the evidence that Cuscuta japonica at the population indicated an intensive site management likes clearance of scrub is not proper habitat management protocol. Thus, further researches should be followed to determine the effect of canopy removal and other disturbance factors as management techniques.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.34-34
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• 2021

과거 식물상에 대한 정보가 없었던 경기도 양주시 장흥면에 위치한 장군봉(425.0 m)의 식물상을 2020년 4월부터 10월까지 총 3회에 걸쳐 조사하였다. 본 조사에서 확인된 조사지 내 관속식물은 양치식물 8과 10속 9종 1변종 10분류군, 나자식물 3과 4속 6종 6분류군, 쌍자엽식물 62과 144속 198종 7아종 16변종 2품종 223분류군, 단자엽식물 6과 29속 38종 1아종 5변종 1픔종 45분류군으로 총 284분류군을 확인할 수 있었다. 장군봉 일대의 특산식물은 은사시나무 (Populus tomentiglandulosa T.B.Lee), 키버들 (Salix koriyanagi Kimura), 병꽃나무 (Weigela subsessilis (Nakai) L.H.Bailey), 백운산원추리 (Hemerocallis hakuunensis Nakai)의 4분류군이 분포하고 있었고 산림청에서 지정한 희귀식물로는 취약종 (VU) 등급의 주목 (Taxus cuspidata Siebold & Zucc.) 1분류군이 확인되었다. 느릅나무 (Ulmus davidiana var. japonica (Rehder) Nakai)를 포함하여 I등급 10종, 함박꽃나무 (Magnolia sieboldii K.Koch) 등 II등급 4종, 병조희풀 (Clematis heracleifolia DC.) 등 III등급 8종, IV등급에 해당하는 바위말발도리 (Deutzia grandiflora var. baroniana Diels) 등 총 25종이 식물구계학적특정종에 속했다. 침입외래식물은 미국자리공 (Phytolacca americana L.), 유럽점나도나물 (Cerastium glomeratum Thuill.), 청비름 (Amaranthus viridis L.) 등 20분류군을 확인할 수 있었고, 생태계교란야생식물인 환삼덩굴 (Humulus japonicus Sieboid & Zucc.), 돼지풀 (Ambrosia artemisiifolia L.), 단풍잎돼지풀 (Ambrosia trifida L.), 미국쑥부쟁이 (Aster pilosus Willd.)의 4분류군이 확인되었다.

• The Korean Journal of Ecology
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• v.28 no.4
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• pp.199-206
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• 2005

Estuary islets should be managed systematically because they are important places for birds to rest and breed. This paper investigates the environmental properties of islets where the sand banks are located from east to west on the southernmost of Nakdong estuary during a year (September 2003 $\sim$ August 2004). The research showed that 59 species and 19,148 individuals were found in the area A (Jangja Shinja-Do) and 61 species and 28,394 individuals in the area B (Saja-Do; Beakhapdeung Doyodeung). Totally, 74 species and 47,539 individuals were observed in both of this estuary. Shorebirds are the most observed species in both areas. In area, most of individuals were especially observed in the spring when Shorebirds migrate northward for breeding. In B area, various species were also observed in the fall when they migrate southward for wintering. Therefore, many groups of birds are observed around Shinja-Do in the spring. They passed the winter in Doyodueng, associated with feeding in the main stream of Nakdong river mainly. Although the southernmost sand bar is the breeding place to access to outside without interception, invasion by human beings and predators (mice, weasels and etc.) gives a fatal blow for birds to breed or rest. The reed which is a tall herbaceous plant is flourished according to the process of ecological succession. Therefore, the sand bar becomes a land. It results in reduction of habitats and breeding grounds for birds. In conclusion, these areas where birds can use the islets as habits and breeding places must be preserved by restraining luxuriance of reeds and systematic management of human beings and predators is necessary.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.485-486
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• 2016

본 논문에서는 SDR SW 플랫폼을 기반으로 활용 분야에 적용될 수 있는 4종 S/W를 제안한다. SDR SW 플랫폼은 openAPI로 제공되어 확장성과 활용성 및 유연성 측면에 장점이 있다. 웹 서비스를 기반으로 구현한 4종 SW는 교육용, 경계용, 감시용, 교통용으로 각 S/W의 목적성에 따라 사용하는 파형과 밴드를 설정하여 운용하도록 구성하였고, 운용시에 발생한 데이터를 그래프, 도표 등의 시각적으로 사용자에게 정보를 제공한다. 교육용 S/W는 다중대역, 다중파형 설정 및 다양한 정보 제공, 경계용 S/W는 실외 특정 구역 감시, 감시용 S/W는 실내 침입자 탐지, 교통용 S/W는 실시간 차량 현황과 과속 탐지 등 각 S/W에 따라 특정 활용 목적에 기능을 구생하여 구현하였다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.2
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• pp.353-371
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• 2014

We already have seen many studies and articles about the methodology responding the security risks and threats. But we still have some controversial subjects to be settled. Now, we are living in the era that we should focus on how to use the security systems instead of how to make it. In this point of view, a company need to find out the answer for these questions, which security risks have to be handled in a corporate, which system is better for responding the security threats, and how we can build necessary security architecture in case of developing systems. In this article, we'd like to study on-site scenarios threatening the corporate assets, the limit on dealing with these threats, and how to consolidate the security events and information from enormous assets. Also, we'd like to search for the direction form the actual cases which have shown the desired effect from converging the assets and network informations.

• The Korean Journal of Ecology
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• v.24 no.5
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• pp.273-280
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• 2001

We investigated the flora and vegetation structure of exotic plants along stream geomorphology and disturbance factors in the riparian zone of Seunggi stream, Incheon. Total 53 exotic plant species were found in the riparian corridors of Seunggi stream. The percentage of exotics ranged from 25% to 33% of total species richness, and its mean value was 24% in the whole riparian area. The percentage of exotics reflected the vulnerability of riparian zones to plant invasions by disturbances, and it could be used as an indicator of riparian system dysfunction. The distinct distribution patterns of exotic plants did not found in the lateral topographic features of the stream. Invasion and proliferation of the exotic plants were somewhat remarkable at terraces and bank slopes of the stream. Among various disturbance factors, plowing and trampling were important on the invasion of exotic plant species of Seunggi stream.