• Journal of The Korean Astronomical Society
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• v.36 no.spc1
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• pp.45-47
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• 2003

A white light flare was observed at the limb on 16 August 1989 in He 10830 ${\AA}$ spectra, H$\alpha$ slit jaw photo-grams, and white light filter-grams of ${\lambda}=5600{\AA}{\pm}800{\AA}$. The kernels of the white light flare are not spatially related with Ha brightenings, suggesting that the flare energy would be released at the photosphere.

• Proceedings of the Microbiological Society of Korea Conference
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• 2004.05a
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• pp.87-89
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• 2004

• Journal of Korean Library and Information Science Society
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• v.31 no.2
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• pp.333-354
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• 2000

The study is based on Tong Kuk Yuk Tae Chong Mok that Hong, Man-Jong, a writer of the later Cho-Sun dynasty, wrote in the style of chronicle in 1705. Tong kuk Yuk Tae Chong Mok, different from the former history book, described briefly the whole history in the autonomous view from king Tan-Kun to king sun-Jong, the Cho-sun dynasty. There for the author appraises the sense and value of Tong kuk Yuk Tae Chong Mok, by surveying the publishing background, bibliographic analysis, descriptive method, and cited book on Tong kuk Yuk Tae Chong Mok.

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2004.11a
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• pp.136-136
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• 2004

• Proceedings of the KIEE Conference
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• 1989.07a
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• pp.510-514
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• 1989

This paper presents a new converter composed of a P.W.M controller and a resonant converter which operates at a constant frequency. This converter has relatively simple control circuits and high conversion efficiency. The optimum operating point corresponding to maximum efficient for the S.R.C and P.R.C operating above resonance is obtained.

• Proceedings of the KIEE Conference
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• 1989.07a
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• pp.548-551
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• 1989

Two dimensional numerical analysis program of power VDMOSFET structure has been developed. Modeling and analysis on the electrical characteristics of the device are presented These are available for the device structure optimization and physical understanding of the behavior of the device

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.10a
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• pp.5-6
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• 2006

• Korean journal of food and cookery science
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• v.13 no.5
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• pp.635-638
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• 1997

Dried raddish leaves were prepared by using three different pre-treatment methods (shady sun-drying, freezing after blanching, and shady sun-drying after blanching). Then, the retention of minerals in dried raddish leaves was determined. It was shown that the retention of most minerals (Na, K, Fe, Ca, Mg) except P was higher when shady sun-drying method was used. The retention of P was shown to be the lowest when freezing after blanching method was used.

• Journal of applied mathematics & informatics
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• v.12 no.1_2
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• pp.107-117
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• 2003

We study the integration problem in which one wants to compute the approximation to the definite integral in the average case setting. We choose the composite Newton- Cotes quadratures as our algorithm and the function values at equally spaced sample points on the given interval［0, 1］as information. We compute the average case error of composite Newton-Cotes quadratures and show that it is minimal (modulo a multi-plicative constant).

• Bulletin of the Korean Space Science Society
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• 2001.04a
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• pp.49-49
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• 2001