• Journal of Microbiology
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• v.44 no.5
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• pp.508-514
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• 2006

In this study, the double-stranded DNA-dependent activities of Deinococcus radiodurans RecA protein (Dr RecA) were characterized. The interactions of the Dr RecA protein with double-stranded DNA were determined, especially dsDNA-dependent ATP hydrolysis by the Dr RecA protein and the DNA strand exchange reaction, in which multiple branch points exist on a single RecA protein-DNA complex. A nucleotide cofactor (ATP or dATP ) was required for the Dr RecA protein binding to duplex DNA. In the presence of dATP, the nucleation step in the binding process occurred more rapidly than in the presence of ATP. Salts inhibited the binding of the Dr RecA protein to double-stranded DNA. Double-stranded DNA-dependent ATPase activities showed a different sensitivity to anion species. Glutamate had only a minimal effect on the double-stranded DNA-dependent ATPase activities, up to a concentration of 0.7 M. In the competition experiment for Dr RecA protein binding, the Dr RecA protein manifested a higher affinity to double-stranded DNA than was observed for single-stranded DNA.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.652-653
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• 2011

수요반응(DR : Demand Response)은 스마트 그리드(Smart Grid)를 구성하는 핵심 요소 중 하나이다. 본 논문에서는 스마트 그리드 환경 하에서 ISO(Independent System Operator)의 수요자원시장에 참여함과 동시에 말단 수용가들을 대상으로 다수의 DR 프로그램을 운영하는 LA(Load Aggregator)사업자의 DR자원 운영 시스템에 대한 전반적인 개념 및 흐름에 대하여 기술하였다. 또한, 스마트 그리드 하에서 LA사업자의 DR자원 운영 시스템 설계 중 LA사업자의 DR자원 최적배분 전략에 대한 개념 및 예시를 제시하였다.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.537_538
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• 2009

본 논문의 목적은 전력 소비자 입장에서 비용 최소화를 하는 DR(Demand Response)프로그램의 설계이다. 이는 DR자원을 입찰받는 환경에서 시장의 가격을 고려하여 DR자원의 투입량과 그 보상금을 결정하는 것에 초점을 맞추고 있다. 또한 수요 감축이 이루어진 후에 발생하는 수요증가현상(Payback)현상을 고려하였다. payback 현상을 고려하지 않고 DR프로그램을 설계할 경우 당장의 피크를 줄이기 위해 많은 DR자원 투입하는 경우가 있다. 이런 경우 당장의 피크는 없어지지만 추후의 증가하는 수요에 의해 제2의 피크가 발생하거나 비용이 증가하는 현상이 생긴다. 따라서 Payback은 DR프로그램을 실행하는데 있어서 반드시 고려되어야할 중요한 현상이다. 본 논문에서는 몇 가지 payback 모델을 바탕으로 소비자 입장에서 비용 최소화하는 DR프로그램을 구현하였다.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.21
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• pp.9555-9556
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• 2014

• Journal of Institute of Control, Robotics and Systems
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• v.6 no.10
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• pp.928-935
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• 2000

In order to improve the performance of a GPS/DR integration system, the error sources of DR sensors should be modeled accurately, This results in the increases in the dimension of the integration filter and, consequently, computational load becomes large. To reduce the computational load, suggested in this paper is a decoupled GPS/DR integration scheme that consists of two cascaded Kalman filters. The GPS velocity output is used in the first filter to calibrate the DR sensor and to fix the velocity as well. The velocity from the first filter is fed to the second filter where the position is corrected using the GPS position output. Experimental results show that the proposed integration scheme has positioning performance comparable to the conventional coupled one, while its computation is reduced to about 2/3.

• Journal of Institute of Control, Robotics and Systems
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• v.16 no.8
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• pp.810-815
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• 2010

This paper proposes a vision/DR integrated navigation system using distance between wheels of the vehicle and a gyroscope. In order to show the validity of the proposed vision/DR integrated navigation system, experiments were performed for a trajectory of a mobile robot. Experimental results show that the proposed vision/DR integrated navigation system gives better navigation performance than a vision/DR integrated navigation system using only distance between wheels of the vehicle.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.25 no.6
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• pp.1023-1030
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• 2001

The tensile properties of short nylon6 fiber reinforced NR and SBR have been investigated as functions of diameter ratio(DR), interphase condition, fiber aspect ratio(AR), and fiber content. The short-fiber(DR=3 and AR=2) reinforced SBR did not show the dilution effect for all interphase conditions. And the short-fiber(DR=3 and AR=2) reinforced NR did not show the dilution effect except for the no-coating. The better interphase condition, the lower dilution effect at same DR. The tensile moduli are significantly improved due to fiber content and diameter ratio at same interphase condition. The pull-out force increased with the DR. The better interphase condition, the higher pull-out force at same DR. It is found that the DR and AR have an important effect on tensile properties.

• Journal of the Korean Chemical Society
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• v.49 no.4
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• pp.377-380
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• 2005

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.49 no.1
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• pp.53-54
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• 2023

• Bulletin of the Korean Chemical Society
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• v.33 no.4
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• pp.1345-1348
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• 2012