• Bulletin of the Korean Space Science Society
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• 1994.09a
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• pp.51-51
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• 1994

No Abstract. See Full-text

• Bulletin of the Korean Space Science Society
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• 2003.05b
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• pp.47-47
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• 2003

• Bulletin of the Korean Space Science Society
• /
• 2003.05b
• /
• pp.58-58
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• 2003

• Bulletin of the Korean Space Science Society
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• 2003.05b
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• pp.21-21
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• 2003

• The Bulletin of The Korean Astronomical Society
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• v.16
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• pp.9.1-9.1
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• 1991

• Bulletin of the Korean Space Science Society
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• 2002.05b
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• pp.15.2-15
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• 2002

• Journal of the Korean Ceramic Society
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• v.36 no.10
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• pp.1075-1079
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• 1999

LaSrCoO3 thin films were spin-coated onto the SrTiO3(100) substrates by the chemical solution process. X-ray diffraction $\theta$-2$\theta$ scans and X-ray diffraction $\beta$ scans were used to determine the crystallinity and in -plane alignment behavior of the films. The X-ray diffraction pattern showed the film obtained by annealing at 80$0^{\circ}C$ was highly oriented. The X-ray diffraction pole-figure analysis and reciprocal-space mapping (2$\theta$-$\Delta$$\omega$ scans) of the resulting film showed that the film comprising the pseduocubic phase had an epitaxial relationship with the SriO3 substrate.

• Journal of the Korean Institute of Intelligent Systems
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• v.11 no.5
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• pp.441-447
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• 2001

In general, Rough Set theory is used for classification, inference, and decision analysis of incomplete data by using approximation space concepts in information system. Information system can include quantitative attribute values which have interval characteristics, or incomplete data such as multiple or unknown(missing) data. These incomplete data cause tole inconsistency in information system and decrease the classification ability in system using Rough Sets. In this paper, we present various types of incomplete data which may occur in information system and propose INcomplete information Processing System(INiPS) which converts incomplete information system into complete information system in using Rough Sets.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.119.5-119
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• 2002

$\textbullet$ Lack of exact dynamic modeling of omni-directional mobile robots $\textbullet$ The exact dynamic model of the mobile robots including the wheel dynamics $\textbullet$ The joint-space and operational-space dynamic model of the mobile are dervied as anaytical forms $\textbullet$ Comparison between the discrepancy of the incomplete dynamic and the exact dynamic $\textbullet$ Useful aspect of redundant actuation

• 정보저장시스템학회:학술대회논문집
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• 2005.10a
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• pp.242-245
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• 2005

The rotating flow in the space between co-rotating disks is of considerable importance in information storage systems. Hard disk drivers(HDD) in computer are used extensively as data storage capacity. The trend in the computer industry to produce smaller disk drives rotating at higher speed requires an improved understanding of fluid motion in the space between disks. In this study, we have tried LES model for inner-disk flowfield to investigate the flow disturbance and the flow structure driven by co-rotating disks. The boundary pattern between inner region and outer region obtained lobe-shape structure clearly and its number has been validated on experimental data by our previous study. We obtain the spectra of velocity and pressure components with several frequencies. We revealed there are two kinds of disturbances, one is global wave propagation and another is local wave propagation on Ekman boundary layer.