• Environmental Engineering Research
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• v.9 no.4
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• pp.154-159
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• 2004

• Proceedings of the KAIS Fall Conference
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• 2010.11a
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• pp.288-290
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• 2010

국산자동차의 품질이 비약적으로 발전하였으나, 주행시나 정차시의 정숙성은 세계최고의 자동차에 비해서는 여전히 취약한 실정이며, 특히 자동차 트렁크에서 발생한 소음과 자동차 하체에서 발생한 소음이 트렁크를 타고 내부에 전달되는 문제가 발생되어 그 해결책이 요구되고 있다. 본 연구에서는 흡 차음이 높은 자동차 트렁크 매트를 개발하는데 목적이 있다. 연구방법으로는 공동연구기업에서 제공한 완제품 형식의 자동차 트렁크 시트와 성형하기 전에 플라스틱판(Board)과 부직포를 이용하여 트렁크 매트의 흡음 및 차음성능을 테스트하였으며, 부직포와 시트의 면밀도를 증가시켜 흡음률과 투과손실의 변화를 살펴보았다. 흡 차음 성능이 높은 자동차트렁크 매트를 개발하기 위하여 부직포와 시트 사이에 다공층을 형성하는 설계를 통하여 매트를 제작하였으며, 개발된 매트의 흡/차음성의 변화를 살펴본 결과 흡음률과 차음도가 기존 제품보다 우수한 것을 확인하였다.

• Proceedings of the PSK Conference
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• 2000.04a
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• pp.211.3-212
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• 2000

• Journal of the Economic Geographical Society of Korea
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• v.20 no.1
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• pp.105-120
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• 2017

Chung-ju enterprise city was selected as a model enterprise city in 2005, and the city is planned to finish the construction in 2020. The main purpose of this study is to suggest the developing strategy and activation plan for Chung-ju enterprise city based on the enterprise city of developed countries. Chung-ju enterprise city will grow into well-being self-sufficient city due to the cutting edge knowledge, industry-centered cluster which is the new growth industry of Chungchungbuk-do and the surrounding excellent nature. For the success of Chung-ju enterprise city, the cooperation between developing agents such as companies, universities, local government, and central government is important. The leading companies and researching facilities should be attracted as well. Also, non-profit exclusive organization must be installed. The successful development of Chung-ju enterprise city means the success of balanced region development policy which will solve overpopulation of capital region and unbalance of Korea.

• Journal of the Korean Institute of Educational Facilities
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• v.17 no.5
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• pp.40-44
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• 2010

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2006.11a
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• pp.253-259
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• 2006

Since townscape planning zones were introduced in 2000 by a revised Urban Planning Law, interest and understanding on townscape have been enhanced in Korea. Driven by this trend of the time, interest in townscape planning has been growing in the area of urban planning, and local governments have been expressing their interest in townscape management. This study is intended to provide criteria for setting goals of constructing desirable urban environments in harmony with existing condition in Chung-ju City. To this end, questionnaire surveys and awareness research were administered and following findings were obtained in relation to user-specific preferences on view targets and view points for townscape planning in Chung-ju City. In general, citizens of Chung-ju City were found to prefer townscape frequently in use practically, while residents in other areas preferred such townscape as linked with the city' s overall reputation. Both groups were found to prefer natural landscape (Gaemyeongsan, Namsan, etc.) to artificial one as a view target, and Chung-ju Terminal and the neighborhoods and downtown(Seongseo-dong) were presumably preferred as a view point.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1531-1532
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• 2008

본 논문은 앞을 볼 수 없는 시각 장애인의 보행 시 장애물에 대한 안전을 고려한 시스템으로 보행 시 전방에 보행 장애 물체가 나타날 경우 초음파 센서가 장애물의 위치거리를 측정하고 측정된 거리 데이터를 근거리 무선통신을 통해 송.수신하여 이를 최종적으로 사용자인 시각 장애인에게 음성으로 사전 경고함으로써 발생할 수 있는 위험 요소를 대처하는데 기여할 수 있도록 설계하였다. 설계된 시스템은 IT관련 기술을 활용함으로써 휴먼 IT기술을 구현하고자 하였다.

• Journal of the Korean Home Economics Association
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• v.36 no.12
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• pp.175-189
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• 1998

The purpose of this study were 1) to investigate the degree of quality of life and housing satisfaction and the variables to affect it, 2) to identify housing and community satisfaction between Seoul and Chung-Ju city residents and to compare it if there were any differences. The results were Seoul city residents' life and housing satisfactions are more higher than Chung-Ju's and housing variable influenced relatively higher degree to life satisfaction. Prefered housing and community features were identified and community satisfaction variables were investigated.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2008.11a
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• pp.291-292
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• 2008

This study used EPR's sheet and cable as a specimen, and measured residual voltage depending on the induced voltage, thickness of the sheet, and shape of the sheet and cable. The results of the study lead to the following conclusion: 1) The residual voltage increased in proportion to the induced voltage as time increases; 2) The residual voltage of the basic mixed specimen and practical mixed specimen increased as time increased; 3) The peak of the cable appeared earlier than that of the sheet in both of the basic mixed specimen and practical mixed specimen.

• Proceedings of the KIPE Conference
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• 2010.07a
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• pp.174-175
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• 2010

본 논문에서는 wavelet 변환을 이용하여 태양광 발전 시스템의 외란을 측정하는 방법을 연구하였다. MLD(Multi-Level Decomposition) 기법을 이용하여, 계산량이 적으면서도 빠른 시간내에 외란의 종류와 크기를 알아낼 수 있다. Wavelet 이론 소개와 컴퓨터 모의실험, DSP 제어기를 이용한 실험 결과로서 본 연구의 타당성을 입증하였다.