• Proceedings of the Korean Environmental Sciences Society Conference
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• 1994.10a
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• pp.45-45
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• 1994

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1995.04a
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• pp.89-90
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• 1995

• Bulletin of Korea Environmental Preservation Association
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• v.17 no.3
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• pp.58-63
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• 1995

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2003.11a
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• pp.35-37
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• 2003

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.05b
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• pp.151-152
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• 2003

본 연구에서의 대기환경용량(Atmospheric Environmental Critical Loads, 이하 CL 이라 약칭함)이란 "어떤 지역의 대기질에 어느 일정수준 이상의 피해를 주지 않고 그 수준을 유지할 수 있는 정도의 대기오염물질의 부하량"으로 정하였다(김정수 등, 2001). 환경용량을 파악하는 것은 현재의 환경질의 수준을 가늠하고 개선해야할 양 및 위치 등에 대한 구체적인 정보를 제공하게 되는 체계적인 접근 방법이라 할 수 있다. 그러나 이와 관련된 국내외의 적용사례가 거의 없는 실정이다. (중략)

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.05a
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• pp.191-194
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• 2002

기존의 퍼지 제어기는 퍼지 추론시 [0, 1]의 소속도를 갖는 퍼지 소속함수들의 실수연산으로 인하여 연산수행 속도가 저하되는 문제를 가지고 있다 따라서 본 논문에서는 실수연산으로 인하여 야기되었던 속도 저하문제를 해결하기 위한 새로운 퍼지연산 기법으로 실수 값을 갖는 퍼지 소속 함수 값을 정수형 격자(pixel)에 매핑 시켜 정수형 퍼지 소속 함수 값만을 가지고 연산함으로써 기존의 퍼지제어기에 비해 매우 빠른 연산을 수행 할 수 있는 고속 퍼지제어기를 제안한다. 또한 퍼지제어시스템 설계시에 퍼지 입.출력 변수들의 퍼지항들을 입력시킬 수 있는 GUI(Graphic User Interface)를 제공하여 소속함수의 수정 및 퍼지 값 입력시 사용자에게 보다 편리한 환경을 제공한다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2005.11a
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• pp.77-79
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• 2005

• Water for future
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• v.52 no.6
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• pp.46-57
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• 2019

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.16 no.4
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• pp.191-195
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• 2004

This study investigated the effect of deep-sea environment on the compressive characteristics of polymer matrix composite. The specimens used in the experiment were thick Carbon-Epoxy composites that were made from Carbon-Epoxy prepregs. The specimens were immersed into seawater for thirteen months. The seawater content at saturation was about 1.2% of the specimen weight. The hydrostatic pressures applied were 0.1 MPa, 100 MPa, 200 MPa, and 270 MPa. It was found that the compressive elastic modulus increased about 10% as the hydrostatic pressure increased from 0.1 MPa to 200 MPa. The modulus increased additional 2.3％ as the pressure increased to 270 MPa. It was also found that compressive fracture strength and compressive fracture strain increased with pressure in a linear behavior. Compressive fracture strength increased 28％ and compressive fracture strain increased 8.5％ as the hydrostatic pressure increased from 0.1 MPa to 270 MPa.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.18 no.1
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• pp.15-20
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• 2006

It is well-known that the corrosive behavior of PMC (polymer matrix composite) structure is much better than the metal structure in the marine environment. The understanding of fracture behavior of PMC in the deep-sea environment is essential to expand its use in the marine industry. For a present study, fracture tests have been performed under low different pressure levels such as 0.1 MPa, 100 MPa, 200 MPa, and 270 MPa using the seawater-absorbed carbon/epoxy composite samples. Fracture toughness was determined from the work factor approach as a function of hydrostatic pressure. It was found that fracture behavior was a linear elastic far all pressure levels. The fracture toughness increased with increasing pressure.