• Title/Summary/Keyword: Performance Trend

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Trend of Laser Cladding Technology in Material Processing (공구강의 내 마모성을 높여주는 레이저 클래딩 기술동향)

  • Kil, S.C.;Kim, H.T.;Kim, S.W.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2008.10a
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    • pp.321-324
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    • 2008
  • The increasing interest in the surface modification by the laser cladding technology in the material processing is placing stringent demands on the manufacturing techniques and performance requirements, and the manufacture employs the high quality and efficiency laser cladding technology. This paper covers recent technical trends of laser cladding technology including the COMPENDEX DB analysis.

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Trends in Lubricants -Future Challenges

  • Shim, Joosup
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 1995.06b
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    • pp.1-3
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    • 1995
  • Aspects of the current trend in lubricants and future challenges are discussed. The discussion highlights key enviromnental issues regarding to resource conservation, toxicological consideration and environmental acceptability. Also highlighted are base stocks trends relative to hydroprocessed stocks (HVI, VHQ and XHQ), synthetic base stocks (PAO and organic esters) and biodegradable fluids (vegetable oils and special esters). Equipment severity and lubricant performance quality are briefly described.

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Single Crystals for Functional Devices

  • Kim, You-Song
    • Proceedings of the Korea Association of Crystal Growth Conference
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    • 1999.12a
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    • pp.93-99
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    • 1999
  • It is definite trend that the functional devices are to be integrated by miniaturizing of individual components. Bulk crystals turn into wafer form, while thin film of the functional materials is being fabricated for single and multi-layer devices. In addition, single crystals with multi-function performance would be desirable for further miniaturization. crystal growers have the responsibility for synthesis single crystals work to meet ever increasing requirement of future devices.

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Trend of the welding process technology (고능률 용접프로세스의 발전동향)

  • Kim, H.T.;Kil, S.C.
    • Proceedings of the KAIS Fall Conference
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    • 2012.05b
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    • pp.653-655
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    • 2012
  • The increasing interest in the welding process technology is placing stringent demands on the manufacturing techniques and performance requirements, and the manufacture employs the high quality and efficiency welding process technology. This paper covers recent development trends of the welding process technology including the GTAW, PTAW, FSSW, etc.

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Bond & Lapped Splices in High-Strength Concrete Structures (고강도 콘크리트 구조물의 철근 부착 및 이음에 대한 연구)

  • 김준성
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.39 no.6
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    • pp.122-130
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    • 1997
  • An experimental study was conducted to evaluate the bond performance of reinforcing bars embedded in high-strength concrete. Four bond specimens and ten beam splice specimens using concrete with compressive strength of 246kgf/$cm^2$ and 64lkgf/$cm^2$ were tested. The effect of several variables on basic development length and compressive strength of concrete is discussed in splice specimens. The test results showed that the current trend in concrete specification of making the splice length longer to compensate for having smaller cover and spacing may not be an effective approach.

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Trend of Laser Beam Welding Technology (고밀도 열원방식 레이저빔 용접의 연구동향)

  • Kim, H.T.;Kil, S.C.
    • Proceedings of the KAIS Fall Conference
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    • 2011.12b
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    • pp.481-484
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    • 2011
  • The increasing interest in the laser beam welding is placing stringent demands on the manufacturing techniques and performance requirements, and the manufacture employs the high quality and efficiency laser beam welding technology. This paper covers recent research trends of the laser beam welding technology including the laser beam surfacing and laser beam cladding technology.

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Trend of Laser Brazing Technology (고효율/고품질 레이저브레이징에 관한 연구동향)

  • Kim, H.T.;Kil, S.C.
    • Proceedings of the KAIS Fall Conference
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    • 2011.12b
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    • pp.475-477
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    • 2011
  • The increasing interest in the laser brazing is placing stringent demands on the manufacturing techniques and performance requirements, and the manufacture employs the high quality and efficiency laser brazing technology. This paper covers recent research trends of the laser brazing technology including the SCI-E analysis of published papers, research subjects and research institute analysis.

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Flexible Electronics Devices for Smart Card Applications

  • Hou, Jack;Kimball, Bob;Vincent, Bryan;Ratcliffe, Bill;Mahan, Mike
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.75-77
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    • 2008
  • Flexible electronics devices such as plastic display, thin film battery, membrane switch, organic memory for smart card applications will be presented. The performance and power consumption of various display technologies will be compared for OTP requirement in smart cards. Wireless power transmission by RF coupling through an antenna provides a potential power solution to smart cards. Finally, the general trend of smart card future developments will be discussed.

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Software Defined Radio를 위한 AD/DA 변환기의 기술 동향

  • 신원화;한건희
    • The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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    • v.10 no.3
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    • pp.39-47
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    • 1999
  • This paper presents the survey of technical trend in AD converters for wireless communication systems. This paper provides explanations about the performance measure of ADC in wireless communication application and the relation ship between BER versus effective resolution and sampling speed. The survey suggests that at least one step analog frequency down conversion is required for software defined radio systems due to current technological limit.

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A Trend of Infra Structure Establishment and Method of Performance Evaluation for Cooling Tower (냉각탑 성능평가 방법 및 관련 설비구축 현황)

  • 윤재호;김종하;권오경
    • Journal of Advanced Marine Engineering and Technology
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    • v.28 no.3
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    • pp.405-412
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    • 2004
  • 최근 우리나라의 경제 발전에 따른 산업 규모가 총체적으로 증가함으로써 그에 따른 산업용수의 사용량이 크게 증가하고 있다. 산업용수 사용량의 증가는 제한된 수자원의 부족과 방류 산업용수에 의한 수질오염 등의 문제가 발생하게 된다. 이러한 문제점을 해결하기 위해서는 산업용수중 약70%를 차지하는 각종 냉각수의 재이용이 필요하다.(중략)