한국형 지속가능부가가치 방법론 개발 및 활용방안

임수용,김정남,강홍윤,김종대 한국환경경영학회 2010 환경경영연구 Vol.8 No.2

ACT-R 인지 아키텍처를 이용한 운전자의 인지 부하 측정

임수용,명노해 대한산업공학회 2011 대한산업공학회 추계학술대회논문집 Vol.2011 No.11

The driver model based on the ACT-R cognitive architecture was developed in order to predict the performance and cognitive workload of a driver operating HVI devices. In the 10 HVI tasks, the predicted performance time and cognitive workload by the ACT-R driver model was well matched and highly correlated with the mean of performance times and subjective workload ratings from 15 participants, respectively. It is strongly proposed that the ACT-R driver model in this study can be applied to evaluate the usability of a new HVI design with less cost in the early stage of system development.

ACT-R 인지 아키텍처를 이용한 운전자의 인지 부하 측정

임수용,명노해,홍기범 대한산업공학회 2012 산업공학 Vol.25 No.2

The driver model based on the ACT-R cognitive architecture was developed in order to predict the performance and cognitive workload of a driver operating HVI devices. In the 10 HVI tasks, the predicted performance time and cognitive workload by the ACT-R driver model was well matched and highly correlated with the mean of performance times and subjective workload ratings from 15 participants, respectively. It is strongly proposed that the ACT-R driver model in this study can be applied to evaluate the usability of a new HVI design with less cost in the early stage of system development.

금속판으로 봉인된 유-무기 보호 박막을 갖는 OLED 봉지 방법

임수용,서정현,주성후,Lim, Su yong,Seo, Jung-Hyun,Ju, Sung-Hoo 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.7

To study the encapsulation method for heat dissipation of high brightness organic light emitting diode (OLED), red emitting OLED of ITO (150 nm) / 2-TNATA (50 nm) / NPB (30 nm) / $Alq_3$ : 1 vol.% Rubrene (30 nm) / $Alq_3$ (30 nm) / LiF (0.7 nm) / Al (200 nm) structure was fabricated, which on $Alq_3$ (150 nm) / LiF (150 nm) as buffer layer and Al as protective layer was deposited to protect the damage of OLED, and subsequently it was encapsulated using attaching film and metal sheet. The current density, luminance and power efficiency was improved according to thickness of Al protective layer. The emission spectrum and the Commission International de L'Eclairage (CIE) coordinate did not have any effects on encapsulation process using attaching film and metal sheet The lifetime of encapsulated OLED using attaching film and metal sheet was 307 hours in 1,200 nm Al thickness, which was increased according to thickness of Al protective layer, and was improved 7% compared with 287 hours, lifetime of encapsulated OLED using attaching film and flat glass. As a result, it showed the improved current density, luminance, power efficiency and the long lifetime, because the encapsulation method using attaching film and metal sheet could radiate the heat on OLED effectively.

수압보증시험시의 음향방출에 의한 복합재 연소관의 파괴거동 예측

이상호,김호철,오치환,송성진,정현조,임수용 韓國非破壞檢査學會 1998 한국비파괴검사학회지 Vol.18 No.2

섬유강화 복합제 연고관은 복합재료의 사용, 필라멘트 와인딩 및 경화공정 등으로 인하여 제작 중 다양한 결함이 발생할 수 있으며, 또한 사용 도중에도 예기치 않은 손상을 받아 기계적 성질이 저하될 수 있다. 따라서 제작 완료된 연소관의 품질 보증을 위해 수압보증시험이 사용되고 있으나 이를 위해 가한 수압이 오히려 연소관에 예기치 않은 손상을 가하여 실제 사용시 그 성능을 저하시키는 요인으로 작용하는 경우도 있다. 이러한 문제를 해결하기 위해 본 연구에서는 수압보증시험시의 음향방축을 감지하여, 그 신호의 특성으로부터 복합제 연소관의 파손 거동을 예측하는 체계적인 기법의 개발을 시도하였다. 음향방출을 이용하여 연소관에 발생한 손상의 개략적 위치를 결정할 수 있었으며, 또한 파괴모드의 식별도 가능하였다. 다만, 시료의 부족으로 최종파열압력의 변화와 충격손상의 영향에 대한 신뢰성있는 분석은 불가능하였다. Prediction of failure behavior in filament-wound composite motor cases is one of the important issues for their reliable application. Acoustic emission during hydroproof testing of the cases is used to solve this problem. Based on the acoustic emission behavior, failure sites can be located successfully. The identification of failure modes is also possible using the distribution of acoustic emission amplitude. Due to the limitation in the number of samples, it is not possible to predict the final burst pressure of motor cases and the effect of impact damage on the final burst pressure.

활성 슬러지법에 의한 폐수 처리 공정의 전산모사

이성철,임수용 한양대학교 에너지·환경기술연구소 1999 에너지·環境技術論文集 Vol.5 No.-

본 연구에서는 1986년 IAWQ (International Association of Water Quality)에서 기존의 활성슬러지 모델을 집대성하여 발표한 ASM No.1 (Activated Sludge Model No.1)을 기반으로 하여 전산모사를 수행하였다. 모델의 검증을 위하여, 첫번째로 문헌상의 폐수처리장에 대해 다른 프로그램과 모사결과를 비교하여 보았고 그 다음으로 실제 조업되고 있는 York city의 WWTP에서의 조업 자료와 모사결과를 비교해 보았다. 그 결과 실제 조업 자료와 근사한 결과를 얻을 수 있었고 적절한 고형물체류시간 (Solid Retention Time)을 제시하였다. 본 모사의 결과를 이용하여 폐수처리에 있어 좀더 효율적인 조업과 폐수처리장의 설계에 도움이 되리라 생각한다. A mathematical model has been developed to understand and optimize the biological wastewater treatment processes. ASM1(Activated sludge model No.1) proposed by IAWPRC task group(1986) has capability to predict the performance of single sludge systems handling carbon oxidation, nitrification, and denitrification. The model enables to predict the behavior of a multi reactor flow scheme and presents a proper solid retention time (SRT). The model was compared with experimental data in the literature and agreed well within 2% error.

동적 방사선투과검사를 이용한 지상연소시험 기술개발

임수용(Sooyong Lim),김준엽(Junyeop Kim),김인식(Insik Kim) 한국추진공학회 2006 한국추진공학회지 Vol.10 No.3

경남지역 Holstein 우유의 화학적 성분에 관한 연구

임수용,김영길 東亞大學校生命資源科學大學附設 農業資源硏究所 1995 農業生命資援硏究 Vol.4 No.1

The study was conducted to investigate the chemical constituents of Holstein raw milk and to obtain the regression equations among chemical composition of milk, collected from Kyoung-Nam Province from June 1993 to May 1994. 1. The average chemical composition of raw milk were found to be fat, 3.66% ; protein, 3.93% ; lactose, 4.04% ; solid-not-fat, 8.67% and total solids, 12.33%, respectively. 2. Fat contents decreased in summer and increased in winter, while protein and lactose contents decreased in autumn, Solid-not-fat and total solid content showed high correlation coefficients with other components. 3. The regression equations among the raw milk components were as follows: T.S.=4.62+0.889 S.N.F. ;protein=-1.40+0.615 S.N.F.; lactose=-0.50+0.368T.S.; lactose=0.704+0.384 S.N.F. 4. The multiple regression with two independent variable among the milk components were as follows: T.S.=1.38+1.27fat+1.60pro.; S.N.F.=1.38+0.266fat+1.6pro.;S.N.F.=0.53+1.17pro.+0.286T.S.;S.N.F.=1.20-0.437 fat+2.25 lac.

접착 필름과 평판 유리를 이용하여 봉지된 유기 발광 소자의 발광 특성

임수용(Su Yong Lim),양재웅(Jae-Woong Yang),주성후(Sung-Hoo Ju) 한국표면공학회 2013 한국표면공학회지 Vol.46 No.3

To study the encapsulation method for large-area organic light emitting devices (OLEDs), OLED of ITO /2-TNATA / NPB / Alq₃:Rubrene / Alq₃ / LiF / Al structure was fabricated, which on Alq₃/LiF/Al as protective layer of OLED was deposited to protect the damage of OLED, and subsequently it was encapsulated using attaching film and flat glass. The current density and luminance of encapsulated OLED using attaching film and flat glass has similar characteristics compared with non-encapsulated OLED when thickness of Al as a protective layer was 1200 nm, otherwise power efficiency of encapsulated OLED was better than nonencapsulated OLED. Encapsulation process using attaching film and flat glass did not have any effects on the emission spectrum and the Commission International de L’Eclairage (CIE) coordinate. The lifetime of encapsulated OLED using attaching film and flat glass was 287 hours in 1200 nm Al thickness, which was increased according to thickness of Al protective layer, and was improved 54% compared with 186 hours in same Al thickness, lifetime of encapsulated OLED using epoxy and flat glass. As a result, it showed the improved efficiency and the long lifetime, because the encapsulation method using attaching film and flat glass could minimize the impact on OLED caused through UV hardening process in case of glass encapsulation using epoxy.

NEXAFS 분광법에 의한 Alq<SUB>3</SUB>/Ba과 Alq<SUB>3</SUB>/Au의 계면에서의 전자 천이에 관한 연구

임수용(Su yong Lim),주성후(Sung Hoo Ju),양재웅(Jae Woong Yang) 한국표면공학회 2012 한국표면공학회지 Vol.45 No.1

Tris(8-quinolinolato)aluminum(Ⅲ); Alq3 has been frequently used as an electron transporting layer in organic light-emitting diodes. Either Ba with a low work function or Au with a high work function was deposited on Alq3 layer in vacuum. And then, the behaviors of electron transition at the Alq3/Ba and Alq3/Au interfaces were investigated by using the near edge x-ray absorption fine structure (NEXAFS) spectroscopy. In the each interface, the energy levels of unoccupied obitals were assigned as π<SUP>*</SUP>(LUMO, LUMO+1, LUMO+2 and LUMO+3) and σ<SUP>*</SUP>. And the relative intensities of these peaks were investigated. In an oxygen atom composing Alq3 molecule, the relative intensities for a transition from K-edge to LUMO+2 were largely increased as Ba coverage (ΘBa, 2.7 eV) with a low work function was in-situ sequentially increased on Alq3 layer. In contrast, the relative intensities for the LUMO+2 peak were reduced as Au coverage (ΘAu, 5.1 eV) with a high work function were increased on Alq3 layer. This means that the electron transition by photon in oxygen atom which consists in the unoccupied orbitals in Alq3 molecule, largely depends on work function of a metal. Meanwhile, in the case of electron transition in a carbon atom, as ΘBa was increased on Alq3, the relative intensity from K-edge to π1<SUP>*</SUP> (LUMO and LUMO+1) was slightly decreased, and from K-edge to π2<SUP>*</SUP> (LUMO+2 and LUMO+3) was somewhat increased. This rising of the energy state from π1<SUP>*</SUP> to π2<SUP>*</SUP> exhibits that electrons provided by Ba would contribute to the process of electron transition in the Alq3/Ba interfaces. As shown in above observation, the analyses of NEXAFS spectra in each interface could be important as a basic data to understand the process of electron transition by photon in pure organic materials.