• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2002.07a
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• pp.160-163
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• 2002

Silica waveguide for an integrated diffractive optical head system was designed and fabricated. The waveguide was designed to optimize the optical efficiency of red and/or blue laser source, and a lab-made RF magnetron sputter was adopted to deposit silica cladding and core layers on SiO$_2$/Si substrates. The cladding and core layers were formed using commercial targets, and the former was done with ＃7740 and the latter with BK7 and BAK4, respectively The surface roughness of the waveguide layers was measured to be 30.3${\AA}$ for BK7 and 17.8${\AA}$ for BAK4, and the difference of refractive indices between core and cladding layers was 0.9% and 2.5%, respectively. The waveguide fabricated with the core layer of BK7 showed better optical properties when the final diffractive optical probe heads were measured with red laser(650nm) source.

• Journal of the East Asian Society of Dietary Life
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• v.3 no.1
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• pp.1-9
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• 1993

To study the Koryo dynasty (14th Century) diet culture, $\ulcorner$Bak Tong Sa$\lrcorner$&$\ulcorner$No Kul Dae$\lrcorner$were analyzed. $\ulcorner$Bak Tong Sa$\lrcorner$and$\ulcorner$No Kul Dae$\lrcorner$are the book of Chinese dialogue book which were published 14C Koryo dynasty. The results obtained from the study were as follows: 1. Vegtables were 40 varieties involving the representative vegetables in Koryo dynasty. 2. Lamb and pork were the most popular meat I Won dynasty (Chinese) and the meat were popular in 14C Koryo dynasty. 3. Cook menu introduced I these books were 40 varieties and the full course menu were used in Han dynasty Banquet. 4. Cooking tools were various to survey Koryo dynasty cooking tools culture.

• Nuclear Engineering and Technology
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• v.21 no.3
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• pp.216-222
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• 1989

The MC-50 cyclotron at Korea Canter Center Hospital is now operational for neutron therapy and medical radioisotope production. Design features, mechanical structures and operating characteristics of the MC-50 are described in this paper. Optimum operating condition for this cyclotron has been determined by the repetitive running, and the performances of the internal beam have been investigated through the measurements of intensity and spatial distribution of the internal beam as a function of the radius of the cyclotron. Routinely, the 40 $\mu$A of 50 MeV protons have been obtained at first Faraday cup with a extraction efficiency of 61%.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.187-188
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• 2009

네트워크로 연결된 카메라를 사용자가 원하는 장소에 설치해서 자리를 비울 때 발생하는 일을 알아볼 수 있는 시스템을 구현한다. 먼저 웹캠을 컴퓨터에 설치해서 프로그램을 구동시켜 모니터에 출력이 되는 것을 확인 후, 감시 작동을 시키게 되면, 초기 설정 화면과 현재 화면을 비교 한다. 초기 설정 화면과 현재 화면에서 차이값이 발생하면 경보음 및 문자 전송을 하게된다. 사용자가 쉽게 내용을 확인할 수 있도록 홈페이지와 연동이 가능하게 한다.

• Proceedings of the Korean Nuclear Society Conference
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• 2004.10a
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• pp.711-712
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• 2004

• Proceedings of the Korean Nuclear Society Conference
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• 2004.10a
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• pp.707-708
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• 2004

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2005.05a
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• pp.499-504
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• 2005

• Proceedings of the Korean Nuclear Society Conference
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• 2001.05a
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• pp.493.2-493
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• 2001

• Computational Structural Engineering
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• v.21 no.2
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• pp.30-34
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• 2008

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2006.10a
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• pp.232-233
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• 2006