• Proceedings of the Korean Operations and Management Science Society Conference
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• 1996.04a
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• pp.10-10
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• 1996

• Journal of The Korean Astronomical Society
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• v.21 no.2
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• pp.97-104
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• 1988

This study presents the specific rule governing the image configurations of an extended source for micro lensing of the two body gravitational lens system developed by Chang and Refsdal (1979). Various topological situations of a source are considered in relation to the regions bounded by the so-called critical curves.

• Journal of The Korean Astronomical Society
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• v.25 no.2
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• pp.79-90
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• 1992

The physical properties of the flux factor K and its application are discussed in connection to the high amplification events. The effects due to random motions of stars in a foreground galaxy are examined in the frame work of moving caustics of gravitational microlenses.

• Korean Journal of Mathematics
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• v.5 no.2
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• pp.217-225
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• 1997

In this paper, we define the McShane-Stieltjes integral for real-valued function and prove some of its properties.

• Communications of the Korean Mathematical Society
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• v.19 no.2
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• pp.243-251
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• 2004

In this paper, we classify the subalgebras by their family of level subalgebras in BG-algebras.

• Journal of applied mathematics & informatics
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• v.12 no.1_2
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• pp.429-436
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• 2003

We study the asymptotic equivalence between the nonlinear differential system $\chi$'(t) = f(t, $\chi$(t)) and its variational system ν'(t) = f$\chi$(t, 0)ν(t) by using the comparison principle and notion of strong stability.

• Journal of applied mathematics & informatics
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• v.16 no.1_2
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• pp.489-496
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• 2004

We study the h- stability of nonlinear difference system x(n+1) =f(n, x(n)) and its perturbed system y(n+l) =f(n, y(n))+g(n, y(n), Sy(n)).

• Proceedings of the Zoological Society Korea Conference
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• 2000.10a
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• pp.177.3-178
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• 2000

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
• /
• 2000.10a
• /
• pp.251.2-251
• /
• 2000

No Abstract, See Full Text

• Proceedings of the Korean Nutrition Society Conference
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• 2003.05a
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• pp.198.1-198.1
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• 2003