• Applied Chemistry for Engineering
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• v.22 no.3
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• pp.291-295
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• 2011

A bake-out process using auto switchgear for five days was performed to evaluate the reduction effect of the concentration of volatile organic compounds (VOCs) and formaldehyde in a newly-built elementary school gymnasium. Reduction rates of VOCs were observed as followings: 38.2, 64.2, 86.3, 80.2, and 71.5% for benzene, toluene, ethylbenzene, xylene, and styrene, respectively, which satisfies the indoor air quality standards of newly-built apartment houses in Korea. The reduction rate of total VOCs and formaldehyde were 67.0 and 24.7%, respectively. Those results proved that the bake-out process using auto switchgear was effective for reducing indoor air pollutants.

• Journal of Environmental Health Sciences
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• v.19 no.4
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• pp.51-58
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• 1993

The integrated solid waste management for Seoul Metropolitan city can be established on the basis of the following hierarchy of priorities: 1. Efforts for source reduction should be propelled by both government and citizens to achieve the effects of resource conservation. The adequate production and consumption which are environmentally amenable and sustainable can be induced by the reasonable imposition of deposit money for waste treatment to one-time use products. To accomplish source reduction effectively, the induction of legal and institutional regulation of producer and consumer participation is requisite. 2. For resource recovery, wastes generated should be recycled as far as practicable. Community residents are responsible to separate discharge, the authorities concerned have responsibility of separate collection, and recycling industry should be assissted through tax reduction and financing. Resource separation facilities can be constructed at Kimpo Metropolitan landfill site for wastes not separately collected due to some unavoidable circumstances. 3. Garbage should be composted. Garbage is uneconomical for incineration, because it has high moisture content and low calorie, thus there is no reason for the incineration of garbage even though garbage is classified into combustibles. Composting facilities can be located at sites which are not densely populated and easily accessible to transportation, for example, Kimpo Metropolitan landfill site. Compost produced can be managed by the authorities for the use of fertilizer to a green tract of suburban land and farms. 4. Nonhazardous combustible wastes not recyclable can be utilized for thermal recovery at the incinerators which are completely equipped with pollution control devices. According to the trend of local autonomy and the equity principle of local autonomous entities, incineration facilities of minimal capacity required can be constructed at each districts of Seoul Metropolitan city which have organized local assembly. In case of Yangcheon district, the economically combustible waste quantity is about 260 tons/day which exceeds 150 tons/day, the incineration capacity of existing facility. But, from now on, waste quantity can be reduced substantially by the intensive efforts of citizens for source reduction and recycling and the institutional support of administrative organizations. Especially, it is indispensable for the government to constitute institutional and technological bases that can recycle paper and plastics form 43% of waste generated. A good time for constructing of incineration facilities for municipal solid waste can be postponed to the time that pollution control technologies of domestic enterprises are fully developed to satisfy the standards of air pollution prevention, because the life expectancy of Kimpo Metropolitan landfill site is about 25 years. Within this period, institutional improvements and technological advancements can be attained, while the air qual. ity of Seoul Metropolitan city can be ameliorated to the level to afford incineration facilities. 5. For final disposal, incombustibles and ash are landfilled sanitarily at Kimpo Metropolitan landfill site.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.351-352
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• 2015

일반 교과목에 관한 교수-설계안은 많이 연구되어 활용되고 있지만 프로그래밍 언어의 실무능력 향상을 위한 교수 설계 전략은 매우 부족한 형편이다. 이에 본 연구에서는 기존의 교수-설계 방법들을 기반으로 한 사례연구로서 SQL 튜닝 학습사례를 통해 교수설계 전략안 및 운영전략안을 제시하고자 한다.

• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.417-418
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• 2012

최소 신장 트리를 이용하여 멀티미디어 통신을 위한 네트워크를 구축하는 것보다 효과적인 유클리드 스타이너 트리 생성과정에서 필연적으로 발생되는 막대한 계산 량과 실행시간 문제를 해결하기 위해 Delaunay 삼각망을 적용하는 방법을 제안한다.

• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.419-421
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• 2012

멀티미디어 통신을 희망하는 수많은 노드들이 비 균등하게 분포되어 있는 환경에서 PTAS 기법을 사용하여 효과적으로 통신가능하게 하는 통신 네트워크 시스템의 구축이 가능하게 하는 방법을 제안한다.

• Proceedings of the Korea Contents Association Conference
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• 2010.05a
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• pp.333-335
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• 2010

국내 제조업체에 정보화시스템을 도입하기 위해서는 먼저 그 기업의 현재의 정보화수준을 분석해 보아야 한다. 본 논문에서는 중소기업청에서 제공한 정보화평가모델[1]을 사용하여 수도권지역의 제조업들에 관한 정보화수준을 평가 및 분석한 다음 정보시스템도입을 위한 앞으로의 전략방안을 제시하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2010.07a
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• pp.513-514
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• 2010

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.367-368
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• 2018

본 논문에서는 노인들의 정신건강 중 우울에 관한 정도를 측정해 볼 수 있는 앱의 개발을 위하여 한국형GDS를 활용하는 컨텐츠를 설계하여 노인성 우울을 예방하고 조기 진단하여 노인의 건강한 삶에 도움을 주고자 한다.

• Bulletin of the Korean Chemical Society
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• v.33 no.4
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• pp.1329-1332
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• 2012

• Journal of the Korea Society of Computer and Information
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• v.22 no.2
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• pp.29-35
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• 2017

In this paper, we present a 5W1H programming model for IT non-experienced people who are not familiar with computer programming and those who need programming education. Based on this model, we can design a development tool that can be easily programmed by beginners. This development tool is a programming method applying the 5W1H concept and constructs a sentence to satisfy the control condition of 'Who, When, Where, What, and How', which is the sentence element of 5W1H. Therefore, the user can easily develop the target system as if constructing the sentence without learning the programming language of the target system. In this paper, to verify the effectiveness of the 5W1H programming model proposed in this paper, we applied the concept of 5W1H programming to Arduino and developed the development tool and performed the first verification and applied the second verification to the speech recognition smart home development platform.