• Title/Summary/Keyword: mitigate

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Analyse of Trade-off for Implementing RFID Tag to Enhance Security (보안성 향상을 위한 RFID 태그 구현시의 Trade off 분석)

  • Kim, Jung-Tae
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2011.05a
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    • pp.754-756
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    • 2011
  • Most of the sources of security and privacy issues in RFID technology arise from the violation of the air interface between a tag and its reader. This paper will approach the security risk analysis is process from the perspective of the RFID tag life cycle, identify the tag usage processes, identify the associated vulnerability and threat to the confidentiality, integrity and availability of the information assets and its implications for privacy, and then mitigate the risks.

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PI end-point control of the compliant robot manipulator (유연성을 갖는 로보트 매니퓰레이터의 PI end-point제어)

  • 정구진;배준경;김승록;박종국
    • 제어로봇시스템학회:학술대회논문집
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    • 1989.10a
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    • pp.200-205
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    • 1989
  • The performance of conventional robot arms is inhibited by trade-off between speed and accuracy. Because these systems measure only joint angles, in spite of slow speed, they must rely on a stiff structure in order to attain positioning accuracy. Lightweight links would allow faster motion, but their flexibility would also produce positioning errors. This research is involved with the development and evaluation of an End-point Control System whose major goal is to compensate for link deflections and thus mitigate the speed versus accuracy conflict in conventional manipulator.

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Status and Challenging Issues of the Advanced Biofuels (차세대 바이오연료의 R&D 현황과 이슈)

  • Park, Soonchul;Lee, Jinsuk
    • New & Renewable Energy
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    • v.10 no.4
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    • pp.16-21
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    • 2014
  • Advanced biofuels are recognized as a key tool to mitigate the $CO_2$ emissions in the transport sector. Active R&D works have been carried out but there are still some major barriers to implement the technology. In this paper, recent developments on the advanced biofuels' technology are reviewed and the major barriers to commercialization of the biofuels will be discussed.

A study on mitigation of ISI using decision-feedback equalizer in digital holographic optical memory system (디지털 홀로그래픽 광메모리 시스템에서 decision-feedback equalizer를 이용한 ISI 완화에 관한 연구)

  • 최안식;백운식
    • Proceedings of the Optical Society of Korea Conference
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    • 2000.02a
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    • pp.56-57
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    • 2000
  • In this paper, DFE with feedforward section(FDFE) is used to mitigate ISI and improve BER generated in the course of storage and retrieval of high-density 2-dimensional data in digital holographic memory system. From the result of experiment, BER performance of DFE with feedforward section is improved about 37% than binary-decision course by direct thresholding.

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Analytical Approach of Circulating Current Mitigation Effect using Coupled Inductor in Parallel Interleaved Converters (병렬 Interleaved 컨버터에서 일반화된 순환전류 제어 방법)

  • Lim, Chang-Soon;Lee, Kui-Jun;Kim, Rae-Young;Hyun, Dong-Seok
    • Proceedings of the KIPE Conference
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    • 2010.07a
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    • pp.470-471
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    • 2010
  • In this paper, the coupled inductor with three branches in two interleaved converter are analyzed to effectively suppress the high frequency circulating current since the circulating current controller cannot mitigate the high frequency circulating current. As a result, the novel averaged model including the coupled inductor with zero sequence components is developed for reducing the low and high frequency circulating current simultaneously.

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Response Of Steel Frame Structures With Added Elastic Dampers (탄성 댐퍼가 추가된 대형철골 구조물의 응답특성)

  • 배춘희;조철환;양경현;박영필
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.05a
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    • pp.808-812
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    • 2002
  • The feasibility of using elastic dampers to mitigate earthquake-induced structural response is studied in this paper. The properties of elastic dampers are briefly described. A procedure for evaulating the elastic damping effect when added to a structure is proposed in which the damping effect of elastic dampers is incorporated into modal damping ratios through an energy approach. Computer simulation of the damped response of a multi-storey steel frame structure shows significant reduction in floor displacement levels.

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A study on the residual stress relieving for dissimilar metal weld under weld overlay (Overlay 용접을 통한 원전 이종 금속 용접부 잔류응력 완화효과에 대한 연구)

  • Song, Tae-Gwang;Bae, Hong-Yeol;Kim, Yun-Jae;Lee, Gyeong-Su;Park, Chi-Yong
    • Proceedings of the KWS Conference
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    • 2007.11a
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    • pp.260-262
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    • 2007
  • In nuclear power plants, residual stress of dissimilar metal weld propagates cracks in the weld metal which is susceptible to stress corrosion cracking. Overlay welding is a process widely used to mitigate residual stress replacing inside tensile stress by compressing stress. The purpose of this paper is to predict the effect of weld overlay by finite element analysis.

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A Study on The Improvement of Subsynchronous Resonance Using by Superconducting Magnet Energy Storage. (초전도 에너지 저장장치를 이용한 준동기공진의 개선에 관한 연구)

  • Lee, Seung-Won;Won, Young-Jin
    • Proceedings of the KIEE Conference
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    • 1988.07a
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    • pp.57-60
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    • 1988
  • The investigation of subsynchronous resonance by utilities has resulted in proposed and applied method to mitigate or eliminate SSRdamage to turbine generators. Many papers presented various methods and devices that can be used as countermeasures for the SSR. This paper introduced the availability of Superconducting magnet energy storage as an countermeasure for the SSR in the capacitor compensated transmission line.

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Controller Design of the Series Resonant Converter for Reducing Output Voltage Ripple (출력 전압 맥동감소를 위한 직렬공진형 변환기의 제어기 설계)

  • 김만고;한재원;윤명중
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.37 no.6
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    • pp.376-382
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    • 1988
  • A small-signal low-frequency disturbance of the input line affects the regulated-output voltage of the series resonant converter. To mitigate the detrimental effect, the output feedback PI-controller is employed. Small-signal linear models are represented to characterize the closed loop series resonant converter system. Design equations for the PI-controller which satisfy stability and percent ripple conditions are derived from the closed-loop linear model. Experimental results are presented which show excellent correlation with theory.

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Prototype Development for KNGR Plant Protection Systems (차세대 원자력 발전소에서의 발전소보호계통 Prototype 기능의 구현)

  • Park, Jong-Beom;Kim, Chang-Ho;Cho, Whang
    • Proceedings of the KIEE Conference
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    • 1998.07b
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    • pp.807-809
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    • 1998
  • Plant Protection Systems(PPS) are those systems that initiate safety actions to mitigate the consequences of design basis events by sending signals to Reactor Trip Switch Gear System(RTSS) and Engineered Safety Features-Component Control Systems(ESF-CCS). This paper illustrates distinctive features and improved design concepts of Korea Next Generation Reactor(KNGR) based on the experience obtained through prototyping of PPS.

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