• Title/Summary/Keyword: AIP

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Bandwidth Measurement of Graded Index Multi Mode Fiber by Gain Switched Optical Short Pulse (이득스위칭 된 극초단 광펄스에 의한 언덕형 굴절률 분포를 갖는 다중모드 광섬유의 대역폭 측정)

  • 오광환;박용우;백운출;김덕영
    • Proceedings of the Optical Society of Korea Conference
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    • 2001.02a
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    • pp.218-219
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    • 2001
  • 본 실험에서는 RF 소자들과 650 nm InGaAIP FP LD를 사용하고 이득스위칭에 의하여 선폭이 35psec 되는 극초단 광펄스를 생성하였다. 또한 이렇게 생성된 극초단 광펄스를 이용하여 언덕형 굴절률 분포를 가지는 다중모드 광섬유의 대역폭을 빠른 푸리에 변환(Fast Fourier Transform)으로 계산하였다 따라서 본 실험에서 이용된 언덕형 굴절률 분포를 갖는 다중모드 광섬유의 대역폭은 670 MHz.km로 측정되었다.

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Design of Secure ID-based Micro-Payment Protocol (안정한 ID 기반의 소액 지불 프로토콜 설계)

  • 김석매;이현주;이충세
    • Proceedings of the Korean Information Science Society Conference
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    • 2004.04a
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    • pp.433-435
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    • 2004
  • 무선 환경에서의 전자상거래가 빠르게 성장함에 따라 종단간 보안이 필요하다. 기존 WTLS를 사용하는 WPP 프로토콜에서는 종단간 사용자 안전성을 보장하고 있지 않다. 이 논문에서는 AIP 프로토콜에서 사용자와 서비스 제공자간에 종단간 안전성이 제공되는 무선 인터넷 플랫폼에 독립적인 소액지불 프로토콜을 제안한다. 또한 인증기관이 인증과정에 참여할 경우 ID 기반 공개키 암호 시스템을 적용한 세션키를 생성하여 제안 프로토콜의 안전성 및 효율성을 분석한다.

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TiN 및 TiAlN이 코팅된 SKD61강의 내산화성 및 Zn 증기반응성 연구

  • Chae, Ok-Ju;Yang, Hyeon-Sam;Ban, Jae-Sam;Mun, Byeong-Gwon
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2015.05a
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    • pp.170-170
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    • 2015
  • 아크이온플레이팅(AIP)을 이용하여 SKD61강에 TiN 및 TiAlN을 증착함으로써 내산화성 및 아연증기와의 반응을 억제할 수 있었으며, 도금두께 제어를 위한 에어나이프의 수명개선 및 생산성향상에 매우 중요한 요인으로 판단되었다.

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취급제품소개

  • 권태영
    • Proceedings of the Korean Vacuum Society Conference
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    • 2000.02a
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    • pp.39-39
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    • 2000
  • 당사는 1996년 SPUTTERING SYSTEM 제작을 시작으로 하여 진공관련장치 및 부품을 제작, 납품하는 기업입니다. 그 동안 산업체 및 대학, 연구소 등에 제작 납품된 품목은 양산용SPUTTER 연구실험용SPUTTER, ION PLATING, RIE SYSTEM, E-BEAM 증착기 산업용 AL-EVAPORATOR, 산업용 AIP SYSTEM, 고온열처리로, 진공건조장치 진공 배기SYSTEM, 기타 진공관련장치가 있으며 진공부품으로는 OIL ROTARY PUMP, DIFFUSION PUMP, VALVE 및 배관부품 등이 있습니다. 그밖에 취급하는 품목으로는 진공게이지류 및 터보펌프를 판매하고 있습니다. 일부 장치는 기술력을 인정받아 일본, 동남아시아, 중국 등에 수출되었습니다. 당사는 항상 고객이 필요로 하는 진공응용장치를 다년간 축적된 제조기술과 연구력을 바탕으로 만족스러운 제품을 공급하고 있기에 이를 소개하고자 합니다.

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Influence of negative bias voltage on the microstructure of CrN films deposited by arc ion plating (Negative bias voltage effect에 따른 CrN 박막의 미세구조에 대한 연구)

  • Sin, Jeong-Ho;Kim, Kwang-Ho
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2009.10a
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    • pp.159-160
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    • 2009
  • AIP(arc ion plating)방법으로 CrN 코팅막을 합성하였다. 고분해능 SEM과 AFM 분석들로부터 negative bias voltage에 따른 미세구조의 영향을 나타내었다. negative bias voltage의 증가에 따라 columnar microstructure가 amorphous microstructure로 변화하였다. bias voltage effect에 의해 CrN 코팅막내 입자의 크기가 미세해지고 나노 복합체를 잘 형성하였다.

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Characterization of the heat treatment of $AL_2O_3$ thin films by MOCVD (MOCVD법으로 제조한 $AL_2O_3$ 박막의 열처리에 의한 특성 평가)

  • 이상화;김종국;박병옥
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.7 no.2
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    • pp.216-223
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    • 1997
  • By using aluminum iso - propoxide($Al(OC_3H_7)_3$, AIP), $Al_2O_3$thin films were deposited on (100) single crystal silicon wafer by MOCVD method. The compositions of deposited films were analysed by electron spectroscopy for chemical analyse(ESCA). The morphology and thickness of the deposited films were characterized by scanning electron microscopy. The refractive index and C-V propertied were studied by using ellipsometery and HP4192A, respectively. From the results of ESCA and SEM analysis at low pressure, more uniform and stable stoichiometric film can be obtained compared with that of atmospheric pressure. For optical film usage, required refractive index can be obtained by heat treatment of deposited film. To improve C -V characteristics in NMOS device, it is requred to control OH-which is mobile charge in oxide, to form $SiO_2$ layer between $Al_2O_3$ and Si by heat treatment.

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Standardizing Digitization for Preservation and Access to Rare Library Materials (도서관 희귀 자료의 보존과 접근을 위한 디지털화의 표준화)

  • Knoll, Adolf
    • Journal of Korean Society of Archives and Records Management
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    • v.5 no.2
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    • pp.167-182
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    • 2005
  • The beginning of digitization activities in the National Library of the Czech Republic are interconnected with the first periods of existence of the UNESCO Memory of the World programme. It was in 1992 when the library accepted the UNESCO proposal to prepare a pilot CD ROM publication for the programme showing the most precious items from its collections. In 1993 - 1995, the publication was followed by two another titles, which presented two medieval manuscripts in their entirety, providing both all the image documentation and scientific description of various features of the original documents. The digitization centre specialized in processing of old manuscripts and old printed books in co operation with the Czech AIP Beroun Company. Nowadays, these two national programmes in which dozens of Czech and also several foreign institutions take part - are represented on their access side by two digital libraries: Manuscriptorium and Kramerius.

A Study on Construction of IoT Environment for ICT- based Information Support (AIP 정보 확장 지원을 위한 IoT 환경 구축에 관한 연구)

  • Sim, Sung-Ho
    • Journal of Convergence for Information Technology
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    • v.8 no.6
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    • pp.251-256
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    • 2018
  • There have been various studies being conducted to prepare for aging society due to the recent trend of rapid aging. The silver industry such as wellness, senior monitoring and support service, and emergency medical assistance services for the elderly is growing fast. However, due to economic problems, limited services are being provided. In addition, the problem of residence of elderly people and care of elderly patients are also becoming important issues to be solved. Aging in Place is emerging as an alternative to solve the problem of local deviation, controlled communication, and loss of self-sufficiency in the process of residents residing in the facility. In this paper, we propose IoT environment construction for ICT based Aging in Place information extension support. By building an IoT environment for Aging in Place support, users can be provided with services that can meet their needs in a familiar environment. The proposed method builds an environment that can be self-supporting based on the user's information and provides medical, transportation, and life support services for the elderly.

A Study for Cutting Resistance of TiN Coated Tools (TiN 코팅 공구의 절삭저항에 관한 연구)

  • 김광래
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.9 no.2
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    • pp.87-95
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    • 2000
  • By using AIP(Arc Ion Plating) of a physical vapor deposition for the first time in Korea a ceramic tool whose surface is coated single layeredly with TiN is developed. In addition cutting resistance appearing in the process of finishing cut of hardened carbon tool steel STC3 is studied. The principal and radial components of cutting resistance in those cutting conditions appear to be the same or similar and the feed component is relatively small. The feed component is found to be in proportion to cutting width and the radial component in proportion to cutting thickness. Owing to coating the cutting resistance of a TiN coated ceramic tool increas-es compared with that of a general ceramic tool.

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Performance Evaluation of Ti-Al-N coated Endmill by Arc ton Plating (아크이온플레이팅에 의한 Ti-Al-N코팅 엔드밀의 성능평가)

  • 이상용;강명창;김정석;김광호
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2002.04a
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    • pp.251-254
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    • 2002
  • The technique of high speed machining is widely studied in machining field. In this study, TiAIN single-layered and TiAIN/TiN double-layered coatings were applied to end-mill by an arc ion plating technique. Their performances were comparatively studied about cutting force, tool wear, tool life and surface roughness of workpiece under high speed cutting conditions. The TiAIN single-layer coated tool showed higher wear-resistance due to its higher hardness, while the TiAIN/TiN double-layer coated tool showed better performance for high metal removal, i.e., high fled per tooth condition due to its higher toughness. The surface roughness of the workpiece was not influenced by the wear amount of coated tools.

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