• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.411-412
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• 2016

고도화 산업사회에서 하천 횡단 도로에 설치되는 교량은 아주 중요한 역할을 한다. 이때 친수성을 고려한 기존 설치 교량 또는 그 부속 인도교에서 발생되는 비점오염원은 고농도인 상태로 초기우수와 함께 그대로 하천으로 방류됨으로써 하천수에 상당한 수질 오염을 초래한다. 이를 줄이기 위해 교량 인도교에 초기우수와 함께 일시에 유입되는 비점오염원을 경감시킴으로써 하천 수질의 개선효과는 클 것이다. 본 논문은 이러한 초기 우수로부터의 비점오염원을 저감시킬 수 있는 소형과 중형장치를 개발하고, 이를 사용한 실내실험을 통해 비점오염원 요소의 제거효율을 분석하고자 한다.

• Annual Conference of KIPS
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• 2017.11a
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• pp.571-574
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• 2017

본 논문에서는 최근 들어서 계속 반복되고 있는 조류독감의 확산을 예방하기 위해서 방역시스템을 IT 기술과 결합하였다. 먼저 각국의 조류독감 방역시스템에 대해서 설명하고, 조류독감 예방을 위한 BioSecurity에 대해서 알아본다. BioSecurity에 근거한 요구분석사항을 도출해 보고, 다양한 ICT 기술을 결합, 여러가지 센서들을 사용한 자동화된 시스템을 제안한다. 전체 방역시스템에 투입되는 리소스들과 그 역할 등을 구분하고 시스템작동 시나리오를 예상해본다. 향후 AI 발생시 자동화된 시스템의 선제적인 대응으로 조류독감의 확산을 예방하고자 한다.

• Proceedings of the PSK Conference
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• 2001.10a
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• pp.285.2-286
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• 2001

• Journal of Industrial Technology
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• v.27 no.A
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• pp.19-24
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• 2007

This research was done for possible treatment of impermeable surfaces rainwater runoff containing heavy metal ions by manganese oxide coated on polypropylene support. Manganese oxide was coated by Birnessite Coating Methods(BCM)and the coating analyzed by SEM and FT-IR techniques. The efficiency of heavy metal ions adsorption was also assessed via both batch and column tests. Adsorption efficiencies of Cd, Zn, Cu, and Pb were 99.4%, 98.9%, 96.7%, and over 95.7%, respectively. The adsorption progress pattern reveals quite fast adsorption at initial periods of treatment and change to slower rates at later times.

• Bulletin of the Korean Chemical Society
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• v.33 no.11
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• pp.3635-3639
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• 2012

A series of new diarylureas possessing aminoisoquinoline scaffold was synthesized, and their in vitro antiproliferative activity against A375P human melanoma cell line was tested. Compounds 1d, 1l, 1n, 1p, 1q, and 1t showed superior potency against A375P to Sorafenib. The highest potency was shown by compound 1p possessing 3,5-bis(trifluoromethyl)phenyl terminal ring with $IC_{50}$ value of $0.41{\mu}M$.

• Proceedings of the IEEK Conference
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• 2002.07c
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• pp.1772-1775
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• 2002

In this paper, we propose a Hangul character recognition method in which new letter components as recognition units are introduced and the MLP (multilayer perceptrons) neural networks are employed for two-step recognition of Hangul. To recognize Hangul character, we divide it into two or three recognition units and extract the direction angle features of them to be fed to the corresponding neural network recognizers. The recognition results of neural network recognizers are combined by another neural network. The experiments were conducted on the Hangul characters from real letter envelopes which are collected in the mail centers in Korea and the results showed that our method performs better than the conventional one.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2008.06a
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• pp.452-452
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• 2008

Abstract Head-mounted displays(HMD) are being developed and marketed in growing numbers for a variety of applications. Though most commonly associated with entertainment applications other applications are also being developed. The field vision on the display screens is expanded by the optical system producing an imaginary screen that appears to be positioned several meters in front of the viewer. In this study, the mold core for the prism lens of HMD was processed by fly-cutting method, and the form accuracy of the mold core was measured.

• The KIPS Transactions:PartD
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• v.11D no.3
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• pp.659-670
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• 2004

It is possible to implement high quality system which coincided with embedded system purchaser's requirements by quality test. The concrete quality test system applicable within our country for embedded software was not constructed yet. Recently, various embedded systems are developed, but they have many problems such as recall by defect. In this paper, we developed evaluation modules and quality test fables which can implement duality test based on ISO/IEC 12119 for embedded software evaluation.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.920-922
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• 2009

Flexible, transparent thin-film transistor with active layers composed of carbon nanotube-based conducting ink were fabricated on a plastic substrate by ink-jet printing. The properties of the formulated conducting ink containing carbon nanotubes, a conducting polymer, and additives were characterized and optimized. The conducting ink was applied to flexible thin-film transistors using ink-jet printing.

• Proceedings of the KIPE Conference
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• 2013.07a
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• pp.401-402
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• 2013

최근 화석에너지의 고갈과 환경문제, 그리고 원유가 폭등 등의 이유로 신재생에너지의 혁신적인 기술과 보급이 시급하다. 태양광 및 풍력에너지는 무한정 청정에너지로서 세계적으로 많은 연구개발이 진행되고 있다. 풍력 및 태양광을 같이 병행해 사용하면 기상조건에 대한 상호보완적인 효과를 볼 수 있지만 인덕터가 차지하는 공간이 늘어나 컨버터의 부피가 커지고 비용이 증가하는 단점이 있다. 본 논문에서는 인덕터 두 개를 하나의 결합 인덕터로 사용한 풍력/태양광 하이브리드 일체형 컨버터를 제안하고, 최적의 결합계수를 선정하여 입력 전류리플의 저감을 시뮬레이션을 통해 검증한다.