• 한국생태학회:학술대회논문집
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• 1998.05a
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• pp.61.1-61.1
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• 1998

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 1999.04a
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• pp.86-88
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• 1999

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.04a
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• pp.69-72
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• 2005

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2003.10a
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• pp.149-151
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• 2003

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2001.04a
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• pp.135-138
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• 2001

• Korean Journal of Environment and Ecology
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• v.11 no.2
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• pp.149-159
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• 1997

Eleven plots(10m*10m) were established in Pinus densiflora forests and analized in with TWINSPAN and DCA techniques, to study the comparison of the structure of plant community by soil depth in Ulsan Grand Park. As a result of this analyusis, the communities were divided into two groups : Community B which have shallow one. Community A showed climatic climax which have proceeded from Pinus densiflora to Quercus variabilis, Castanea crenata, Platycarya strobilacea, and at last to Carpinus laxiflora. Community A showed climatic climax which have proceeded fro, Pimus densiflora to Quercus variabilis, Castanea crenata, Platycarya strobilacea, and at last to carpenus laxiflora. Community B showed edaphic climax in sere of Pinus desiflora. The diffrernce of the growth of tree height was showed significantly between two communities. The sample tree aged 30 in Community A was 8.50m high and the sample tree aged 35 in Community B was 3.80m high. Community A was better than Community B in soil characteristics and species diversity indicies.

• Journal of Wetlands Research
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• v.15 no.3
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• pp.397-406
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• 2013

Wetland conservation plan has been established to protect ecologically important wetlands based on vegetation integrity, spatial distribution of endangered species, but recently more demands are concentrated on the landscape ecological approaches such as topological relationship, neighboring area, spatial arrangements between wetlands at the broad scale. Landscape ecological analysis and graph theory are conducted to identify spatial characteristics related to core nodes and weak links of wetland networks in Nakdong basin. Regular planar model, which is selected for wetland networks, is applied in the Nakdong basin. The analysis indicates that 5 regional groups and 4 core wetlands are extracted with 15km threshold distance. The IIC and PC values based on the binary and probability models suggest that the wetland group C composed of main stream of Nakdong river and Geumho river is the most important area for wetland network. Wetland conservation plan, restoration projected of damaged and weak links between wetlands should be proposed through evaluating the node, links, and networks from wetlands at the local to the regional scale in Nakdong basin.

• Proceeding of EDISON Challenge
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• 2013.04a
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• pp.310-315
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• 2013

연잎성게가 몸체의 방향을 유입류에 평행하게 맞추어 포식하는 이유에 대해서는 크게 유체역학적인 설명과 생태학적인 설명이 양립하고 있다. O'Neill과 Nakamura와 같은 연구자들에 의해 연잎성게의 이러한 행태를 유체역학의 관점에서 설명할 수 있지만, 정작 셋 이상의 연잎성게 군집의 포식 효율에 대해서는 개체 수에 기반을 둔 생태학적 관점에 의존하고 있다. 따라서 본 연구에서는 연잎성게 군집 내에서의 개체들의 배열을 모델링하고, 다양한 군집 배열에서 개체들의 포식 효율을 EDISON_전산열유체 시스템을 활용해 분석하였다. 특히 포식 효율을 결정하는 과정에서 얇은 익형 이론을 이용함으로써 포식효율을 결정하는 유체역학적 특성이 양력계수임을 확인하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.290-293
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• 2009

바이오 칩 분석 시스템은 유전자와 실험의 두 축으로 이루어진 바이오 칩에서 자료를 추출하고 필요한 정보를 얻기 위해 데이터를 분석하는 시스템이다. 유전자 데이터를 효율적으로 분석할 수 있는 방법으로 바이오 칩 분석 시스템이 각광받으면서 데이터의 양과 종류가 방대해지고 메모리의 효율적인 사용과 이에 따른 속도 개선을 위해 임베디드 시스템이 필요해지고 있다. 이에 따라 본 연구에서는 임베디드 시스템을 위한 PSO 기반의 군집화 알고리즘을 구현하였다. 방대한 양의 유전자 데이터를 분석하기 위해 생태계 모방 알고리즘인 Particle Swarm Optimization 알고리즘과 비슷한 유전자의 분류를 위한 기법으로 군집화를 사용하여 유전자 데이터의 통합 분석 시스템을 구현, 사용자에게 더욱 효율적으로 정보를 제공한다. 본 논문에서는 방대한 양의 데이터의 최적화에 효율적인 생태계 모방 알고리즘 Particle Swarm Optimization 을 이용하여 데이터들을 군집화하는 알고리즘을 임베디드 시스템을 위해 구현한 방법을 기술하고 있다.

• Korean Journal of Microbiology
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• v.55 no.3
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• pp.220-225
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• 2019

Studies based on microbial community analyses have increased in the recent decade since the development of next generation sequencing technology. Associations of gut microbiota with host's health are one of the major outcomes of microbial ecology filed. The major approach for microbial community analysis includes the sequencing of variable regions of 16S rRNA genes, which does not provide the information of bacterial activities. Here, we conducted RNA-based microbial community analysis and compared results obtained from DNA- and its cDNA-based microbial community analyses. Our results indicated that these two approaches differed in the ratio of Firmicutes and Bacteroidetes, known as an obesity indicator, as well as abundance of some key bacteria in gut metabolisms such as butyrate producers and probiotics strains. Therefore, cDNA-based microbial community may provide different insights regarding roles of gut microbiota compared to the previous studies where DNA-based microbial community analyses were performed.