• Korean Journal of Environment and Ecology
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• v.14 no.4
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• pp.238-251
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• 2001

본 연구는 계룡산국립공원 동학사 계곡의 식물군집구조를 파악하기 위하여 실시되었으며, 10cm$\times$10m(100$\m^2$) 조사구를 52개 설정하여 식생조사를 실시하였다. 52개 조사구는 TWINSPAN에 의한 classifi-cation 분석과 DCA ordination 분석을 통하여 소나무군집(16개 조사구), 밤나무군집(4개 조사구), 신갈나무군집(5개 조사구), 졸참나무군집(13개 조사구), 느티나무군집(4개 군집), 서어나무군집(10개 조사구)으로 나누어졌다. 6개 군집의 천이경향을 살펴보면 소나무군집, 신갈나무군집, 졸참나무군집,느티나무군집은 각 층위별 안정된 층위구조로 현상태를 유지할 것이며, 밤나무구닙은 참나무류를 거쳐 서어나무로의 천이가 진행될 것으로 판단되었고, 서어나무군집은 졸참나무와 굴참나무군집으로 퇴행천이될 것이다. 6개 군집의 Shannon의 종다양도지수는 1.2732~1.4699이었다.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2002.09a
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• pp.315-318
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• 2002

낙동강 삼각주의 분포하는 제4기 홀로세 퇴적층 중 북부와 중부, 그리고 남부지역에 해당하는 가덕도 (신항만 조성지역), 범방리 (경마장 조성지역), 양산 (신도시 조성지역)의 조간대 퇴적층에 대한 대자율 연구를 수행하였다. 퇴적층의 층위별 대자율은 입도와 관입저항에 비례하여 대자율도 증가한다. 가덕도의 70여m의 퇴적층 중 20m, 40m의 점토층에서 대자율 변화가 나타나는데 인접한 녹산지역의 연구견과와 비교하면 고환경이 변화되는 지점과 일치한다. 삼각주의 중부에 위치하는 범방리 점토시료는 기반암까지 층위별 대자율이 일정하며, 북부의 양산지역 점토시료는 하부로 갈수록 대자율이 증가하는데 이러한 결과는 시료의 입도 분포와 같은 양상이다. 가덕도 시료와는 달리 모든 점토층이 유사한 대자율을 보여주고 있어 퇴적 동안 환경의 변화는 인지되지 않는다. 이 지역의 시료가 가덕도에 비해 높은 고도에 위치하여 가덕도 시료의 상부 점토에 해당되는 것도 환경변화가 나타나지 않는 이유가 될 수 있다. 따라서 보다 광범위한 지역에 대한 연구가 요구 된다.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2009.10a
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• pp.155-157
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• 2009

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2000.04a
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• pp.87-90
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• 2000

• Proceedings of the Korean Quaternary Association Conference
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• 2006.11a
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• pp.20-20
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• 2006

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2001.04a
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• pp.32-34
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• 2001

• Journal of Conservation Science
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• v.26 no.1
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• pp.43-60
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• 2010

This study was investigated quantitative and objective making techniques for molding clay of Four-guardian statues in Songgwangsa temple. Also, basic data about the provenance of molding clay was acquired for the restoration using same materials when the conservation treatment is carried out. As a result, molding clay used the Four-guardian statues was identified the very similar soil regardless of layers and objects. But molding clay differed in particle sizes and contents of organic matters according to the first layer to finish layer in relatively thick parts. Also, it was used one kind of soil without the layer distinction in thin parts. The restoration soil was applied to genetically similar soil as molding clay of the Four-guardian statues, and showed a difference of careful selection degree according to the layers. As a result of the provenance interpretation, the soil distributing presumed provenance was confirmed the same origin as molding clay. Therefore, the soil is appropriate for the materials of conservation treatment. This result will contribute inorganic material research and conservation treatment for the clay molded Four-guardian statues in Korea.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.6
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• pp.1123-1127
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• 2009

This paper expands the scope of application of the thin film transistor (TFT) in which it is used as the switching element by making the amorphous silicon TFT with the non-volatile memory device,. It is the thing about the amorphous silicon non-volatile memory device which is suitable to an enlargement and in which this uses the additionally cheap substrate according to the amorphous silicon use. As to, the amorphous silicon TFT non-volatile memory device is comprised of the glass substrates and the gate, which evaporates on the glass substrates and in which it patterns the first insulation layer, in which it charges the gate the floating gate which evaporates on the first insulation layer and in which it patterns and the second insulation layer in which it charges the floating gate, and the active layer, in which it evaporates the amorphous silicon on the second insulation layer the source / drain layer which evaporates the n+ amorphous silicon on the active layer and in which it patterns and the source / drain layer electrode in which it evaporates on the source / drain layer.

• Journal of the Korean association of regional geographers
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• v.12 no.2
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• pp.245-264
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• 2006

According to many conceptual researches and discourses, development of information-communication technology(ICT) has made great influences upon activities on time and space. But some empirical studies have shown that its influence in the real world is not so great as we may expect In order to avoid these two oppositional views, this paper wants to put interests on socio-spatial relationships or networks, rather than individual phenomena or consciousness, which have been transformed under the influence of ICT. The development of ICT presupposes a creation of information network, and hence the term 'etwork social space' can be used to see its spatial influence, which would be further understood with the theory of actor-network. This paper also suggests that network social space has three strata, that is, 'nstant' 'unctional 'and 'aterial' and that network social space can be emphasized not only as newly emerging social space but also as reconstruction of subjects' identity through his/her participation into information network as its node.

• Journal of agriculture & life science
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• v.45 no.5
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• pp.33-39
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• 2011

This study was conducted to distribution characteristic of root diameter class between natural and planted stands of one-age class in Pinus densiflora for. eracta in Gangwon. Root development presented that 0.5-2.0 mm diameter class was large part in total root number and length but 0.5-2.0 mm diameter class have a low distribution in each stand. Below 5.0 mm diameter class between natural and planted stands observed outstanding natural stand more than planted stand, but reverse over 5.0 mm diameter class. Root development depending on soil level of vertical and horizontal was presented various natural stand more than planted stand because root distribution of planted stand was concentrated low soil level in 10 cm of soil depth and 20 cm of soil horizontal layer. We can understand that the root distribution presented different between natural and planted stand, therefore this result can used as a basic information for correct of outplanting.