• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2006.07a
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• pp.687-687
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• 2006

• 한국ITS학회:학술대회논문집
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• v.2007 no.10
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• pp.141-143
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• 2007

• Proceedings of the Optical Society of Korea Conference
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• 2005.02a
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• pp.280-281
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• 2005

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1986.10a
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• pp.20-22
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• 1986

This paper represents a graphical design technique of the symmetrical dielectric waveguids couplers. Once the phase constants are given by a approzimate model analysis, coupling lengths are easily calculated for each coupler. These method give some new insight of the codirectional couplers.

• Proceedings of the Korean Ceranic Society Conference
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• 2000.04a
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• pp.89.2-89.2
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• 2000

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2001.11a
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• pp.20-24
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• 2001

Two types of radiative coupling in the 2-dimensional aperture to scatterer coupling problems are described with an emphasis on the main difference between the two types. In particular, detailed comparison is made from the viewpoint of the Quality factor between two types.

• Digital Contents
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• no.3 s.94
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• pp.56-61
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• 2001

디지털 혁명과 새로운 매체환경 변화로 이제 잡지산업은 잡지언론으로서의 역할과 지식산업으로서 성장하기 위한 새로운 전략이 요구되는 시점에 서 있다. 컴퓨터와 정보통신의 결합은 새로운 공동체와 새로운 소통양식을 낳았다. 특히 새로운 소통양식에서는 개인 정보 발신자를 등장시켰는데 독립웹진이 그 예라 할 수 있다. 송신측면에서는 단일 거대 미디어 업체가 정보내용과 정보유통을 독점하는 구조가 흔들릴 수 있다.

• Journal of Korean Ophthalmic Optics Society
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• v.1 no.2
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• pp.1-6
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• 1996

The most common cause of blindness is cataract. The possible causes, radiation, sugar, drugs, trauma, nutrition, congenital, secondary to eye disease etc. Generally, the opacification of the lens are the result fa oxidation of the lens fibers. The basis for lens transparency is the structural integrity of lens fibers. Opacities were occur if there is a significant amount of high molecular weight protein aggregates. If Ca ions combined with lens ${\alpha}$-crystallin proteins, the lens fibers were aggregated by high molecular weight proteins and the lens were opacified. If Ca ions detached from lens ${\alpha}$-crystallin proteins, the lens fibers were aggregated by low molecular weight proteins and the lens were re-cleared. We need to find out the variety of factors can initiated the process of age-related cataract. And to understanding the mechanism how the various kind, of diabetic cataracts occur.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.4
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• pp.1770-1774
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• 2011

This paper was to characterize the transfer of diacylglycerol(DAG) from lipophorin to Manduca sexta larval fat bodies. $[^3H]$-DAG-labeled Lp($[^3H]$-DAG-Lp) was incubated with the larval fat bodies under different times and the time of DAG transfer was determined. Incubation of fat bodies with $[^3H]$-DAG-Lp resulted in accumulation of DAG and TAG in the tissue. The transfer of $[^3H]$-DAG was inhibited in the presence of suramin and unlabeled lipophorin, which would be consistent with a lipophorin receptor. The effects of suramin may be complex because it can change membrane properties when bound to the lipophorin receptor and affect the rate of DAG transfer. To investigate the lipid uptake via receptor-mediated endocytosis, we treated with endocytosis inhibitors, ammonium chloride and chloroquine. The results show that the transfer process of lipid by lipophorin and fat bodies is receptor-mediated endocytosis.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.16 no.2 s.93
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• pp.120-127
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• 2005

The design method of the transversal filter using continuously cascaded directional couplers is presented. The coupler can be treated for a continuously varying nonuniform coupled transmission line. The design method is based on the optimum extraction of desired coupling factor by the control of null positions which are inherent to the coupling spectra pattern. In the optimization process, the improved Woodward-Lawson sampling method is applied to easily synthesize the distributed delay and weighting elements for transversal filter properties. For application, the microstrip transversal filter is fabricated and optimum dielectric overlay is introduced for the mode phase velocity compensation for non-TEM coupler nodes by using SDA(Spectral Domain Approach). Experiment results confirm the validity of the proposed method.