• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.685-687
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• 2003

최근, VPN기술은 보안 통신을 위해 자주 사용되고 있다. 비록 IPsec이 표준화 되었지만 많은 Vender들의 구현은 아직까지 완전한 상호간의 호환성을 갖지는 못하고 있다. 본 논문은 IP-VPN에 있어 상호 호환성 문제를 연구했다. 연구결과, 서로 다른 IP-VPN 구현에 있어 상호 호환성을 지원할 수 있는 Common Interface Component(CIC)를 제안하게 되었다. CIC와 CIC-Manager는 다양한 IP-VPN 구현에 있어서 상호 호환성의 해결책물 제공한다. 또한 CIC를 이용하여 다양한 표준을 지원할 수 있다.

• Electronics and Telecommunications Trends
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• v.27 no.4
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• pp.130-137
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• 2012

사용자의 동의를 받지 않은 개인정보 수집 기술이 남용되고 있다. 개인정보 수집업체, 검색엔진 등은 웹브라우징, 스마트폰, 플랫폼 사용 과정에서 개인정보를 수집하여 인터넷 광고, 기업 서비스에 판매하여 수익을 창출한다. 하지만 프라이버시 침해와 관련하여 국내외적으로 개인정보 수집 기술의 문제를 인식하고 대응하려는 분위기이다. 이에 따라 본고에서는 5개의 웹브라우징 개인정보 수집 기술을 설명한다. 그리고 이를 해결하기 위한 근본적인 방안으로 VRM(Vender Relationship Management) 기술을 제안한다.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.387-390
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• 2004

통신망의 규모가 커지고 구조가 복잡해짐에 따라, 통신망의 성능을 최적화하여 사용자들이 요구하는 서비스 품질을 보장해 주는 성능관리의 기능이 절실히 요구되고 있다. 현재 성능관리의 주요 기능이 되는 트래픽에 대한 분석을 위해서 넷플로우(NetFlow), RMON, 그리고 패킷을 캡처하는 방법이 쓰이고 있지만 통합적인 관점의 해결책은 되지 못한다. 본 논문에서는 다양한 전송기술(Multi-technology), 다양한 장치 제조사(Multi-vender) 장비들의 성능관리를 가능케 할 수 있도록 통합적인 통신망 성능관리 구조를 제시하고, 그에 따라 성능관리 시스템을 설계하고 구현하였다.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2004.04a
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• pp.197-202
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• 2004

Recent researches have shown that IKONOS Geo imagery is capable of pixel-level geopositioning accuracy. However, a large number of ground control points(GCPs) are required in this case. For reducing the number of GCPs, users try to use the vender-supplied RPCs with Geo imagery. But, the biases included in RPCs give rise to absolute positioning error of about 25m as well known. In this paper, a method for the compensation of biases in rational polynomial coefficients(RPCs) for IKONOS Geo imagery is developed. the method requires provision of one or two GCPs to generate the compensated RPCs, and the analysis result of practical testing represents two or three pixels accuracy from IKONOS Geo imagery in case of using only compensated RPCs without GCPs.

• Proceedings of the IEEK Conference
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• 2003.07b
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• pp.1109-1112
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• 2003

본 연구는 switching mode 의 Power NMOSFET failure mode 에 관하여 분석하고 원인을 규명하였다. 분석된 power NMOSFET은 30V급이며, vender A의 상용화 제품이다. 발생한 failure mode는 power switch 회로에서 특정 ID 를 detect 하지 못하는 mode 였다. 측정결과 source voltage 가 저하되었으며, power NMOSFET DC 동작특성 분석 결과 Vgs 변화에 따라 Id 가 저하되었다. Fail 된 power MOSFET 특성값 reference는 동일 LOT의 양품을 선정하였다. De-cap후 Inversion 과 Accumulation mode 별로 Photoemission spectrum analyzer(PSA) 분석 방법을 적용하였다. 결과 accumulation mode 에서 intensity가 감소하였으며, forward diode mode에서 국소적으로 변화하는 영역이 검출되었다. SEM 분석결과 gate metal 과 source metal 의 micro-contact 이 이루어져 있었다. 이 경우 gate metal 과 source metal 사이 close loop 를 형성하여 gate charge량을 변화시켜 power NMOSFET의 출력을 저하하는 failure mode가 발생됨을 분석할 수 있었다.

• Journal of The Korean Digital Architecture Interior Association
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• v.6 no.1
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• pp.1-4
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• 2006

This research studied necessary digital Interior Design education and certification formality for Dept. of Interior Design students' percentage of employment raising and competitive power elevation of industry by the support of 2005 junior college finance support business from the Ministry of Education & Human Resources Development. Contents of this research is built from joint research by vender of software, which has the highest distribution and preference rate of digital Interior Design related software in industry, and The Korea Digital Architecture and Interior Association, and Daeduk college. The necessary certification standard and course-ware for employment of graduates were developed. There are descriptions for students' needs on digital Interior Design related practical application ability that can receive authentication, And made out education schedule as well as contents so that execution of authentication and education may be possible.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 1999.11a
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• pp.40-45
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• 1999

The effect of the addition of helium, neon, argon and xenon on the production of negative hydrogen ions has been studied in a magnetically confined dc filament discharge. The addition of helium and neon produced effects similar to an equivalent increase in hydrogen pressure. However, the addition of argon and low fractions of xenon produced significant increases in the negative ion density for hydrogen at pressures around 1 mTorr. The addition of argon and xenon, by increasing electron density and decreasing electron temperature, achieved conditions closer to optimum for negative ion production. The largest enhancement of negative hydrogen ion density occurred with the addition of argon; it is suggested that this is due to a resonant energy exchange between excited argon atoms and hydrogen molecules.

• Management & Information Systems Review
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• v.24
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• pp.25-44
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• 2008

Small business have very different characteristics from large business; notable, small business suffer from resource and capacity poverty. Without knowing the relative importance of limited resources and capacity in small business, it have limited practical contribution to e-business implementation success. This paper develops an exploratory resource-based model of e-business implementation for small business with 42 sample companies. The results show that three types of resource factors; IS/IT vender supports, the level of IS/IT knowledge, and financial support. The implication for research is that the resource-based view of the firm and the test an exploratory framework of resource factors are useful theories to ground future work on e-business implementation in small business.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2006.05a
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• pp.457-460
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• 2006

For avoiding the waste of costs for building each mobile platform according to each mobile communication vender, KWISF proposed WIPI platform standard. Already the venders are providing mobile map services which are adapted on their own platforms. Because the integration of various mobile platform was performed to WIPI standard, the changes of platform and component API may cause the environment changes of mobile nap services. This study shows the design and implementation results of mobile map services adapted to WPI environments.

• The Journal of the Korea Contents Association
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• v.13 no.3
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• pp.43-53
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• 2013

This paper covers the manufacturing process to improve the quality of the puppet for stop-motion films, especially focuses on the mold making and casting process those are the key steps of the puppet making. Unlike the general mold for a duplication, the mold for puppets has special functions to fix an armature and inject casting materials stably inside, and it is repeatedly baked at high temperature. The practical information about puppet makings is provided including various predictable problems, expertise from many professionals, vender list, and so on.