• Journal of the Chungcheong Mathematical Society
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• v.21 no.4
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• pp.585-590
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• 2008

We give a formula for the Hodge numbers of Calabi-Yau 3-folds, constructed by smoothing and calculate the Hodge numbers of Calabi-Yau 3-folds of Y. Kawamata and Y. Namikawa.

• Journal of the Optical Society of Korea
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• v.8 no.3
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• pp.122-126
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• 2004

The method to obtain four speckle patterns with relative phase shift of ${\pi}/2$ by passive devices such as two waveplates and a linear polarizer, awl to calculate the phase at each point of the speckle pattern in shearography with a Wollaston prism is presented, and the feasibility of the proposed method is theoretically demonstrated by Jones vector.

• Proceedings of the Optical Society of Korea Conference
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• 2006.02a
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• pp.151-152
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• 2006

In this paper, a novel waveguide analysis is addressed based on the rigorous coupled wave analysis method. Using the proposed method, we can analyze half-infinite waveguide structures rigorously calculate.

• Journal of Astronomy and Space Sciences
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• v.29 no.2
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• pp.123-129
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• 2012

The BINSYN program package, recently expanded to calculate synthetic spectra of cataclysmic variables, is being further extended to include synthetic photometry of ordinary binary stars in addition to binary stars with optically thick accretion disks. The package includes a capability for differentials correction optimization of eclipsing binary systems using synthetic photometry.

• Journal of Ocean Engineering and Technology
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• v.18 no.1
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• pp.7-9
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• 2004

Using the solution to th contour integral of the complex logarithmic function ${\oint}_cIn(z-z_{0})dz$, the following definite integral, derived from the formula to calculate the forces exerted to n circular cylinder by the discrete vortices shed from it, has been evaluated (equation omitted)

• Journal of the Chungcheong Mathematical Society
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• v.1 no.1
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• pp.19-26
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• 1988

In this paper, we calculate the precise estimation of range of a Gateaux differentiable operator, and apply to the existence of a periodic solution of the second order nonlinear differential equation $$z^{{\prime}{\prime}}+Az^{\prime}+G(z)=e(t)=e(t+2{\pi})$$.

• Honam Mathematical Journal
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• v.40 no.3
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• pp.577-589
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• 2018

In this note we give some results of the disentangling algebras and disentangling maps and calculate functions on disentangling via measures.

• The Journal of Natural Sciences
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• v.14 no.1
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• pp.1-6
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• 2004

In this paper, we calculate the Nielsen numbers of periods for maps on the Klein bottle.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.451-452
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• 2007

In this paper, we simulate power system transient stability using object-oriented programming(OOP). OOP is a more flexible method than procedual programming. There are several advantages in dynamic system simulation using OOP. We also calculate critical fault clearing time using energy functions for detailed models.

• Journal of the Korean Statistical Society
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• v.32 no.1
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• pp.65-71
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• 2003

We consider the finite dam with compound Poisson inputs which is called M/G/1 finite dam. We assign some costs related to operating the dam and calculate the long-run average cost per unit time. Then, we find the optimal dam capacity under which the average costs is minimized.