• Proceedings of the Korean Statistical Society Conference
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• 2000.11a
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• pp.45-50
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• 2000

Hedayat et al.(1988)와 Stufken(1993) 등은 환경 또는 생태의 특성을 고려하여 인접단위들을 추출확률을 최소화시킬 수 있는 표본설계방법을 제안하였다. 그리고 Hedayat et al.(1998)은 실제 조사에 있어 이들 방법보다 유용한 방법을 제시하였다. 본 논문에서는 이들 표본설계방법의 문제점들을 밝히고 이를 보완할 수 있는 방법과 추가적인 연구 방향 등을 제시한다.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2010.04a
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• pp.185-189
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• 2010

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2008.04a
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• pp.131-133
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• 2008

• Proceedings of the Korean Society of Environment and Ecology Conference
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• autumn
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• pp.96-99
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• 2004

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.10a
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• pp.115-117
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• 2005

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.10a
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• pp.124-127
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• 2005

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2007.04a
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• pp.77-80
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• 2007

• Ecology and Resilient Infrastructure
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• v.10 no.4
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• pp.193-200
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• 2023

Influx of exotic fishes is the problem of fish management. The reason why interest on river environment was increased. Recently, River project was conducted to consider environmental function on the ecosystem and Eco-Diversity. Therefore, farmlands structure along the river was removed such as vinyl greenhouse. Daejeo ecological park was built in 4 River project. Daejeo ecological park have significance habitat for migratory birds and eco-diversity. In spite of nature river improvement, ecological system in river will be break down by exotic fishes. This study was conducted to investigate analyze the fish faun and prevailing species occupancy in Daejeo ecological park. This data will be used to make the management plan of exotic fishes in ecological park around Daejeo ecological park.

• Korean Journal of Environment and Ecology
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• v.11 no.2
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• pp.210-213
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• 1997

This study for development of close-to nature revetment techniques is conducted to rehabilitate disturbed stream ecosystem. For this objective, the experimental reach as on-site dimonstrated research was set up in Hakyoul, the Yangjaech'on from Oct. 1995 to Nov. 1996. Special emphasis on the developing process of the design of revetments was given to geomorphic character of 3 types of low flow channel bank: point bar, attack point and shallow bay. Each revetment was developed with the consideration on revegetation of emergent plants. And designed techniques were applied to the experimental reach, and were evaluated with monitoring for 1 year. As a result of the process, the experiment suggested ecological alternatives to enhance technical feasibility and to replace the conventional river-work.

• The KIPS Transactions:PartD
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• v.16D no.2
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• pp.177-184
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• 2009

Environmental monitoring systems are widely developed for analyzing environment and understanding an ecosystem according to the advance of wireless communication and various sensing techniques. To extract useful information, it requires high cost for processing a query, because these systems have to handle huge volume of raw sensor data which is transmitted from a wide area in environmental monitoring applications. Besides, it is also hard to answer an user defined query which requests to check current and near future condition. In this paper, we propose the monitoring system structure for processing a user defined query for environmental monitoring. It also describes the utilization of sensor data filtering and abstraction model. The designed abstraction model which is based on the slope grid in GIS supports fast data access and update. To analyze condition, the extracted data from abstraction model of each sensor type is combined in a query processor. It is useful to provide meaningful information to users.