• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.542-543
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• 2023

최근 일회용품의 사용 증가 및 재질과 종류가 다양해짐에 따라, 올바른 분리배출 방법 공유 필요성이 대두되고 있다. 본 논문에서는 실시간 물체 인식 알고리즘인 YOLOv7 (You Only Look Once)를 이용하여 재활용 마크를 자동으로 분류하고 그에 따른 올바른 분리배출을 알려주는 시스템을 구현했다. 그 결과, mAP값이 90%로 좋은 객체 검출률을 보였다. 또한, 카카오톡 챗봇 API를 이용하여 올바른 분리배출 방법을 공유하는 서비스를 제공하며 사용자 접근성을 높여 많은 사람이 쉽게 사용할 수 있도록 구현했다.

• Journal of the Korean Recycled Construction Resources Institute
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• v.2 no.3
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• pp.173-179
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• 2014

This is an experimental study for recycling coal ash left over from coal use as a potential fine aggregate in concrete. Coal ash is generally divided into either fly ash or bottom ash. Fly ash has been utilized as a substitution material for cement in concrete mixes. On the other hand, bottom ash has the problem of low recycling rates, and thus it has been primarily reclaimed. This study partially substituted fine concrete aggregates with bottom ash to increase its application rate and therefore its recycling rate; its suitability for this purpose was confirmed. The concrete's workability dropped noticeably with increasing bottom ash content when a fixed water-cement ratio of concrete mix was used. Thus, concrete mixes with higher ratio levels are required. To address this problem, concrete was mixed using a polycarboxylate high-range water reducing agent. The fluidity and air entrainment immediately after mixing the concrete and 1 h after mixing were measured, thereby replicating the time concrete is placed in the field when produced either in a ready-mixed concrete or in a batch plant. As a result of this research, the workability and air entrainment were maintained 1 h after mixing for a concrete mixture with approximately 30% of its fine concrete aggregates substituted with the bottom ash. A slight drop in compression strength was seen; however, this confirmed that potential of using bottom ash as a fine aggregate in concrete.

• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.1
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• pp.89-95
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• 2009

The current enforce decree of "The Act on the Promotion of Construction Waste Recycling" divides seventeen kinds of construction wastes by property and configuration. Mixed construction waste, one of them classified by the enforce decree, is composed two more than justified construction wastes except refuse soil and rock. In construction wastes justified by enforce decree of this law, most refuse concrete and asphalt concrete of construction wastes are recycled. As well as refuse metal is separated, sorted from bulk them, and merchandised for value. Finally this is used the secondary manufactured products. Even though combustible construction wastes like refuse wood, plastics, fiber can be recycled RDF(Refuse derived fuel) or RPF(Refuse plastic fuel) because of high caloric value and low heavy metal but most of them are discharged as mixed construction waste and then treated by treated by incineration and landfill. Therefore, to control construction waste flow efficiently, construction wastes are classifies first combustible, incombustible, mixed combustible, incombustible and etc. in this study. The combustible waste is consisted refuse wood, plastics, fiber and etc. and incombustible waste contains refuse concrete, asphalt, and etc. Mixed construction is construction waste that can not separate from mixed waste bulk with different kinds.

• 한국도로학회지:도로
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• v.19 no.4
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• pp.76-82
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• 2017

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2004.11a
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• pp.113-115
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• 2004

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2010.04a
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• pp.174-174
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• 2010

• The magazine of the Korean Society for Advanced Composite Structures
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• v.3 no.3
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• pp.11-16
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• 2012

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2009.10a
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• pp.83-86
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• 2009

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.41 no.2
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• pp.48-61
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• 2012

장래에 일어날 물부족 문제를 해결하고, 오염물질 발생을 저감하기 위하여, 그리고 산업 폐수 처리수의 자원 재활용의 차원에서 물절약에 대한 인식을 재고시켜야 할 것이다.

• Magazine of the Korea Concrete Institute
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• v.8 no.3
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• pp.5-18
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• 1996