• Title/Summary/Keyword: K-space

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Automatic real-time system of the global 3-D MHD model: Description and initial tests

  • Park, Geun-Seok;Choi, Seong-Hwan;Cho, Il-Hyun;Baek, Ji-Hye;Park, Kyung-Sun;Cho, Kyung-Suk;Choe, Gwang-Son
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2009년도 한국우주과학회보 제18권2호
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    • pp.26.2-26.2
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    • 2009
  • The Solar and Space Weather Research Group (SOS) in Korea Astronomy and Space Science Institute (KASI) is constructing the Space Weather Prediction Center since 2007. As a part of the project, we are developing automatic real-time system of the global 3-D magnetohydrodynamics (MHD) simulation. The MHD simulation model of earth's magnetosphere is designed as modified leap-frog scheme by T. Ogino, and it was parallelized by using message passing interface (MPI). Our work focuses on the automatic processing about simulation of 3-D MHD model and visualization of the simulation results. We used PC cluster to compute, and virtual reality modeling language (VRML) file format to visualize the MHD simulation. The system can show the variation of earth's magnetosphere by the solar wind in quasi real time. For data assimilation we used four parameters from ACE data; density, pressure, velocity of solar wind, and z component of interplanetary magnetic field (IMF). In this paper, we performed some initial tests and made a animation. The automatic real-time system will be valuable tool to understand the configuration of the solar-terrestrial environment for space weather research.

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Forecast of geomagnetic storm with CME parameters

  • Kim, R.S.;Choi, K.S.;Moon, Y.J.;Yi, Yu;Lee, J.;Dryer, M.;Park, Y.D.
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2007년도 한국우주과학회보 제16권1호
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    • pp.71-71
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    • 2007
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SOME PROPERTIES OF THE SPACE OF FUZZY BOUNDED LINEAR OPERATORS

  • Hwang, In Ah;Rhie, Gil Seob
    • 충청수학회지
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    • 제21권3호
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    • pp.347-354
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    • 2008
  • In this paper, we will show that ($CF(X,K),{\chi}_{{\parallel}{\mid}{\cdot}{\parallel}{\mid}}$) is a fuzzy Banach space using that the dual space $X^*$ of a normed linear space X is a crisp Banach space. And for a normed linear space Y instead of a scalar field K, we obtain ($CF(X,Y),{\rho}^*$) is a fuzzy Banach space under the some conditions.

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