u-캠퍼스 구축 모델에 관한 연구

이양민,한희도,구영철,이재기 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2

Together with the development of information and telecommunication technologies, the information environment of campus also has been changed. Recently uniquitous computing technology is going to introduce into various areas. In this paper we proposed new construction models for u-campus which applies to ubiquitous computing technologies. Our proposed models are included in a network model and a service system model. The network model is classified into stage 1~3 according to supported network bandwidths and services. Also the service system model is consisted of 3 levels hierarchical structure according to their functions and characteristics.

항만 통합 운영 시뮬레이터 설계 및 구현에 관한 연구

이양민,한희도,이재기 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1

An advanced nation that use trade to the center of economy are taking advantage of ICT(Information Communication Technology) actively in physical distribution processing to manage their national ports more efficiently. Especially, computer simulation is used mainly by the optimization method of the freight processing. In this paper, we divide the loading and unloading step by 5 steps with various factors that can be considered at the freight processing in port. And we propose a port integral management simulator development method that can perform these simulations. Also, we implement 3D modeling for the loading and unloading equipments of port. According to our study, we can produce suitable factors that need to perform the freight processing in port efficiently, additionally can observe simulation process through virtual port with reality.

소수성 촉매를 이용한 수소동위원소 교환 반응 측정을 위한 순환 반응기

최희주,이한수,안도희,강희석,김광락 한국공업화학회 2002 응용화학 Vol.6 No.2

The catalytic rate constants of hydrophobic catalysts developed for the removal of tritium mainly generated in the pressurized heavy water reactors should be measured. A recycle reactor was designed and built for characterzing the long-term behavior of the catalyst performance at the various temperatures and gas velocities.The catalytic rate constants were measured at the apparent gas velocity of 0.5 m/s and the temperature of 60℃. The initial catalytic constant was 8.44×10^-4mol/g.sec. This value is much greater than that considered in the design of Wolsong Tritium Removal Facility.

u-Campus를 위한 모바일 IPv6 프로토콜 분석

한희도,이재기 東亞大學校附設 淸報技術硏究所 2006 情報技術硏究所論文誌 Vol.13 No.2

u-Campus is usually constituted of not wired networks but wireless network forms, and there is a need to support these networks. The current Mobile IPv4 method has too many limitations and in order to assure enhanced service and mobility, the next generation wireless network Mobile IPv6 is being considered. Therefore, Mobile IPv6, which supplements u-Campus mobility purposes along with faults in the IPv4, is naturally the most reasonable choice. This paper utilizes four protocols out of the currently existing Mobile IPv6 protocol to compare and analyze the compatibility of protocol types with the u-Campus. The result has been that in hierarchial structure and separated space centralized environments such as the u-Campus, the F-HMIPv6 protocol based structure is most effective. Therefore, according to the results in hand, from here on protocol design will be greatly influenced by the mobility and efficiency objectives induced by the materialization of the u-Campus.

u-캠퍼스 지능형 정보 전달 서비스에 관한 고찰

한희도,이양민,이재기 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1

With the development of ICT(Information Communication Technology), these technologies have been utilized in education field broadly Recently, u-Campus that applies the ubiquitous computing and network technologies to campus is going to appear. In this paper, we propose a intelligent information delivery service that can provide new information to students in campus. Students In campus use all sorts of information, such as educational matters, employments, entering upon studies, etc. In the database at anytime and anywhere. Using the proposed service in this paper, students can do their campus life more efficiently and easily.

Ag-(Mo-W)/ZrO₂ catalysts for the production of propylene oxide: Effect of pH in the preparation of ZrO₂ support

Lee, Eo Jin,Lee, Jong Won,Lee, Joongwon,Min, Hyung-Ki,Yi, Jongheop,Song, In Kyu,Kim, Do Heui Elsevier 2018 CATALYSIS COMMUNICATIONS - Vol.111 No.-

<P><B>Abstract</B></P> <P>Direct oxidation of propylene to propylene oxide was carried out over Ag-(Mo-W)/ZrO<SUB>2</SUB> (pH X) catalysts prepared by changing the pH of Zr precursor solution from 3 to 14 while preparing the ZrO<SUB>2</SUB> support. It was found that the fraction of monoclinic phase and the ratio of acidity to basicity in the catalysts showed a volcano-shaped trend with respect to pH of Zr precursor solution. Such characteristics were well correlated with the selectivity of reaction towards propylene oxide. Ag-(Mo-W)/ZrO<SUB>2</SUB> (pH 10) with the highest fraction of monoclinic phase of ZrO<SUB>2</SUB> and ratio of surface acidity to basicity showed the highest selectivity (68%) for propylene oxide.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ag-(Mo-W)/ZrO<SUB>2</SUB> catalysts are used to oxidation of propylene to propylene oxide(PO). </LI> <LI> ZrO<SUB>2</SUB> supports are prepared by changing pH value of Zr precursor solution. </LI> <LI> Highest selectivity for PO is observed over Ag-(Mo-W)/ZrO<SUB>2</SUB> (pH 10) catalyst. </LI> <LI> The fraction of monoclinic ZrO<SUB>2</SUB> phase is correlated with PO selectivity. </LI> <LI> The ratio of acidity to basicity of catalysts is crucial for high PO selectivity. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

An Expert Analysis System Based on Research Achievements

Do-Jin Choi,Young-Ho Oh,Do-Woong Pyun,Sang-Ho Song,Christopher Retiti Diop Emane,Jun-Hyeok Jang,Sang-Hyeuk Kim,Sang-Jun Chung,Seo-Heui Lee,Jong-Hun Kim,Jong-Woo Jeon,Hyeon-Byeong Lee,Jong-Tae Lim,Kyou 한국콘텐츠학회 2021 한국콘텐츠학회 ICCC 논문집 Vol.2021 No.12

골프장 서비스 공정성이 회원권 가치와 참여만족 및 구매행동에 미치는 영향

이도희(Lee, Do-Heui),김명선(Kim, Myoung-Sun) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.5

This study was to provide fundamental data and information on golf industry by studying what effects of service fairness on membership values, customer satisfactions and purchase behavior in membership country club, Tthrough the way of improving and gaining a competitive management efficiency, customers demand high quality services that clients have to increase membership value and customer satisfaction, building a positive image in a diversified market environment After question investigating the data which is collected used PASW Statistics 18.0 for Windows and AMOS 18.0 program, analysis was used in order to acquire demographic characteristics and golf properties of members. The results were as follows. First. service fairness showed (+) effects on value of club membership. Second, service fairness showed (+) effects on participational satisfaction. Third, service fairness had no effects on purchase behavioral. Fourth, value of club membership showed (+) effects on purchase behavioral. Fifth, participational satisfaction showed (+) effects on purchase behavioral. Sixth, value of club membership showed (+) effects on participational satisfaction, but explanatory power was low.

골프연습장 레슨프로의 지도유형과 자질이 회원의 학습효율성과 참여지속의사에 미치는 영향

이도희(Lee, Do-Heui),김병식(Kim, Byung-Shik) 한국사회체육학회 2015 한국사회체육학회지 Vol.0 No.61

The purpose of this study is providing fundamental data and information on promotion of golf practice range industry by studying what effects of teaching method type and quality of golf lesson pro. on learning efficiency and continuous participation intention. The survey was done through 250 members in 5 golf practice ranges in Seoul and north Gyeonggi-do and excluding 43 copies ran an analysis remaining 207(82.8%) copies. After question investigating the data which is collected used SSPS 19.0 and AMOS 21 program, frequency analysis, exploratory factor analysis, Cronbach’s α, confirmatory factor analysis, correlation analysis, path analysis through structural equation model(SEM). The result of this study were as follows. First, teaching method type showed (+) effects on learning efficiency. Second, teaching method type showed (+) effects on continuous participation intention. Third, quality showed (+) effects on learning efficiency. Fourth, quality showed (+) effects on continuous participation intention. Fifth, learning efficiency showed (+) effects on continuous participation intention. Therefore golf lesson pro. have to take a sense of duty for coach and raise learning efficiency by proper teaching method type and development of quality, it will be take positive effect for management activation of golf practice range.

한글 문장의 자동 띄어쓰기를 위한 두 가지 통계적 모델

이도길(Do-Gil Lee),이상주(Sang-Zoo Lee),임희석(Heui-Seok Lim),임해창(Hae-Chang Rim) 한국정보과학회 2003 정보과학회논문지 : 소프트웨어 및 응용 Vol.30 No.3·4

자동 띄어쓰기는 문장 내에서 잘못 띄어쓴 어절들을 올바르게 복원하는 과정으로서, 독자에게 글의 가독성을 높이고 문장의 뜻을 정확히 전달하기 위해 매우 중요하다. 기존의 통계 기반 자동 띄어쓰기 접근 방법들은 이전 띄어쓰기 상태를 고려하지 않기 때문에 잘못된 확률 정보에 의한 띄어쓰기를 할 수밖에 없었다. 본 논문에서는 기존의 통계 기반 접근 방법의 문제점을 해결할 수 있는 두 가지 통계적 띄어쓰기 모델을 제안한다. 제안하는 모델은 자동 띄어쓰기를 품사 부착과 같은 분류 문제(classification problem)로 간주할 수 있다는 착안에 기반하며, 은닉 마르코프 모델을 일반화함으로써 확장된 문맥을 고려할 수 있고 보다 정확한 확률을 추정할 수 있도록 고안되었다. 제안하는 모델과 지금까지 가장 좋은 성능을 보이는 기존의 방법을 비교하기 위해 여러 가지 실험 조건에 따른 다양한 실험을 수행하였고, 오류에 대한 자세한 분석을 제시하고 있다. 제안하는 모델을 복합 명사를 고려하는 평가 방식에 적용한 실험 결과, 98.33%의 음절 단위 정확도와 93.06%의 어절 단위 정확률을 얻었다. Automatic word spacing is a process of deciding correct boundaries between words in a sentence including spacing errors. It is very important to increase the readability and to communicate the accurate meaning of text to the reader. The previous statistical approaches for automatic word spacing do not consider the previous spacing state, and thus can not help estimating inaccurate probabilities. In this paper, we propose two statistical word spacing models which can solve the problem of the previous statistical approaches. The proposed models are based on the observation that the automatic word spacing is regarded as a classification problem such as the POS tagging. The models can consider broader context and estimate more accurate probabilities by generalizing hidden Markov models. We have experimented the proposed models under a wide range of experimental conditions in order to compare them with the current state of the art, and also provided detailed error analysis of our models. The experimental results show that the proposed models have a syllable-unit accuracy of 98.33% and Eojeol-unit precision of 93.06% by the evaluation method considering compound nouns.