• The Korean Journal of Financial Management
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• v.21 no.2
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• pp.65-98
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• 2004

This paper analyzes the foreign exchange exposure and the influence of determinants on the significant exposure under various return horizons of US dollar and the Japanese yen. Also this research is extended to the existence of asymmetric exposures to foreign exchange risk. The exchange rate exposures exhibit significant time variations that are very large to represent changes in cash flow sensitivities, but the relation of the significant exposures and time variations is not monotonically increasing. The extent to which a firm is exposed to exchange rate fluctuations can be explained by the level of the growth potential, nm size and leverage. For the various return horizons, firms with a higher growth potential tend to have higher exposures. And the larger firms' exposures tend to be smaller. The influences of the level of export ratio and leverage vary with return horizons and each periods. It is found that the exposures of fins are asymmetric. The asymmetry is mainly explained by the market share hypothesis. The level of export ratio commonly influences the asymmetric exposures to the US dollar and the Japanese yen.

• Microbiology and Biotechnology Letters
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• v.21 no.1
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• pp.88-94
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• 1993

Actinomycetes are the most diverse group of bacteria. in variety. morphology. and life cycle. Especially. the variety of genus and species of Actinomycetes is so diverse among other microorganisms that about 50 genus of Actinomycetes have been reported until now. Among them. Streptomyces genus is the most plentiful and over 220 species have been reported. The number of the genus of Actinomycetes will be expected to be fixed to about 55 genus and 250 Streptomyces species in the year 2000 thereabouts. Morphological and physiological characters of Actinomycetes varies with culture condition. and therefore diverse life cycles are also possible. In this paper. life cycles of the representative Actinomycetes, Nocardia, Streptomyces. Kitasatosporia. GeodermatoPhi/us. and Sporichthya. according to the condition of nutrient in the media were reviewed.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2004.05a
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• pp.65-65
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• 2004

• 한국도로학회지:도로
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• v.14 no.3
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• pp.12-18
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• 2012

• 한국ITS학회:학술대회논문집
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• 2002.11a
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• pp.47-50
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• 2002

• Proceedings of the KTCVS Conference
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• 1996.10a
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• pp.34-34
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• 1996

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2012.10a
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• pp.189-190
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• 2012

• Journal for History of Mathematics
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• v.19 no.3
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• pp.85-94
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• 2006

We review Galois rings and permutation polynomials over Galois rings with emphasis on cryptological properties of Dickson polynomials and conclude that it is not plausible to obtain the Dickson scheme which has a Galois ring as a plaintext space.

• Journal of Veterinary Clinics
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• v.14 no.1
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• pp.108-111
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• 1997

지방친화성 진균인 M. pachydermatis가 두 마리의 수캐에서 피부병의 원인균으로 증명되었다. 두 마리의 환축에서 흥반, 인설, 탈모 등이 여러 부위에서 발생하였으며, 광역항생물질과 코르티코스테로이드의 45일간 투여에 대해 아무런 임상적 반응을 나타내지 않았다. 발아를 나타내는 난원형 내지 원주형의 효모균이 KOH 및 PHOL 방법에 의해 환축의 피부병변으로부터 다수 증명되었고, 이들은 형태학적으로 M. pachydermatis와 일치하였다. 두 환축의 피부 병변부위 시료를 chloramphenicol을 첨가한 %37{\diamond}C$의 Saubouraud dextrose agar에 배양하면 이 진균이 반복하여 배양되었다. ketoconazole의 경구투여와 sulphur lime의 국소적용에는 치료반응을 잘 나타내었다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.10
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• pp.1053-1060
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• 2011

This study is performed to determine the drug concentration profiles of drug-eluting stents (DES) for an ideal circular ring stent and intertwined stent models for various Reynolds numbers (Re = 200, 400, and 800). The Navier.Stokes equations coupled with the advection-diffusion equation are solved numerically in order to determine how the flow patterns and drug deposition are affected in the in-stent and post-stent regions where flow separation and recirculation occur. The presence of DES within the arterial segment affects the local drug distribution in the flow field. As a result, the drug concentration for the intertwined stent is higher over the in-stent region in comparison with the ideal stents. For a given stent geometry, the local drug concentration in the in-stent region decreases with Reynolds number, while for a given Reynolds number, the local drug concentration is relatively insensitive to the stent geometry. The results show that drug concentration along the arterial wall is significantly higher within the in-stent and post-stent regions for the intertwined stent geometry than for the ideal stent geometries.