• Proceedings of the KIPE Conference
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• 2007.07a
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• pp.40-42
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• 2007

Recently the harmonic generation has deteriorated the quality of electricity and affected the performance on the electrical installation including personal computer, fax, community devices and so on. Some studies of harmonic affects in diagnosis and the cause of accident has not done by the experimental data of harmonic source but merely by presumption according to qualitative analysis. So, in order to research the harmonic affect on the electrical installation according to quantitative analysis and gather reliable data over and over again, it is necessary to develop an Harmonic power source which is capable of generating some harmonics. In this paper, we described about realization of Harmonic power source control module which can produce and added harmonics for the analysis due to harmonic effects.

• 한국방재학회:학술대회논문집
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• 2008.02a
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• pp.33-36
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• 2008

In Korean Building Code 2005(KBC-2005), the Seismic Zone Factor is regulated by separating the seismic zone into two part. This seismic zone factor is not matched to regional seismic characteristics of our country because the factor is based on International Building Code 2000 (IBC-2000) of USA. This study inquiry for having a sufficient grasp of the seismic characteristics of south Korea region and appling for the seismic cope plan. We have collected and analyzed earthquake record happened in domestic region. There are two kinds of earthquake record. One is Historical earthquake data, another is Instrumental earthquake data. I used Instrumental earthquake record data which reliance is higher than historical earthquake data for proposing attenuation formulas by analyzing a correlation the epicenter and the distance.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.20-24
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• 2006

In this paper we investigated the method of examining the accelerated life test on LED traffic signal module by the temperature. The longevity presumption of the LED type signal light by a general heat cycle test used and executed cycle when it was done to longevity by the heat cycle test number and the acceleration factor of a real system requirements of this heat cycle test. Therefore, it reports on the introduction of the acceleration type from which the LED traffic signal module is done here to clarify the above-mentioned acceleration factor with the object and the acceleration factor is requested the test atmosphere actually in the system requirements.

• Journal of information and communication convergence engineering
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• v.2 no.2
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• pp.61-66
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• 2004

This paper presents a way to maximize transmission efficiency and reception ability through transmission diversity technology, which can be adapted to wireless multimedia Wireless LAN system. The presented method is a comparative analysis between a case where parameter a for time average is 0.3.1 with consideration of channel presumption with two types of rms delayed spread, which is 50nsec. 150nsec, for the performance analysis of STTC (Space-Time Trellis Code) adopting time-space ciphering method appropriate for MIMO channel, and performance in the case where presumed channel value from long training column section is applied to according frame in a single frame. The result showed that BER brought SNR improvement of l.0dB in $10^{-3}$ when a was 0.3 than adopting only the long training column, and showed increase of general performance improvement for the sake of time average rather than the case without.

• Journal of the Korean institute of surface engineering
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• v.26 no.5
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• pp.263-270
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• 1993

The effects of surfactants on electorless copper plating bath for PCB was studied. Basic bath composition was cuplic sulfate 10g/l, EDTA.2Na 40 g/l, formalin$ 3m\ell$/l and sodium hydroxide solution for pH adjust. After addition of accelerators, stabilizers and surfactants, the polarization curves in plating bath were carried out for presumption of the plating rate. From the plating rate in bath with the various concentration of additives, the optimum condition for manufacturing the electroless copper plating bath was confirmed. It was found that the addition of $\alpha$.$\alpha$'-dipyridyl, pyridine and polyxyethylene octylphenylether was good as stabilizer, accelerator and surfactants, respectively. With this additives, the maximum plating rate of $12\mu\textrm{m}$/h at $65^{\circ}C$ and $2\mu\textrm{m}$/h at $25^{\circ}C$ was obtained.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1428-1429
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• 2007

The paper used to the Neral Netwok for a forecasting conservation system. A neural network is a powerful data modeling tool that is able to capture and represent complex input/output relationships. The motivation for the development of neural network technology stemmed from the desire to develop an artificial system that could perform "intelligent" tasks similar to those performed by the human brain. The true power and advantage of neural network lies in their ability to represent both linear and non-linear relationships and in their ability to learn these relationships directly from the data being modeled. Form results of this study, the Neral Netwok is will play an important role for insulation diagnosis system of real site GIS and power equipment using Dry-Air gas.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2000.11a
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• pp.258-265
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• 2000

This study is to develop a Fe-based disc brake tinning with sponge structure for passenger car of 150km/h train and to concept design with 3 groove type for brake disc reducing hot hair-crack and certainly friction coeifficient. The developping brake linning would be to presumption of thermal stress Max.5.53k9/m0 of the 3 groove type. and It is stable friction coeifficient and wear rate on the Full Scale Brake dynamometer. So 3 groove type must be reduced to hot stress between Brake disc and Linning and Friction temperature is reduced about 20$^{\circ}C$

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.902-906
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• 2000

망막 혈관 구조의 분석은 망막에 관련된 환자의 진단 및 치료에 중요한 정보를 제공하기 때문에 다양한 연구가 진행되어 왔다. 본 연구에서는 ICG(IndoCyanine Green) 기술을 이용한 망막 영상의 혈관 구조를 분석하기 위해 원의 방정식으로 묘사된 혈관 영역 에너지 함수와 분기점 추정 템플릿을 사용하여 혈관의 특징점들을 추정한 후 혈관의 형체(body)를 자동으로 추적하는 동시에 분기점을 추출하는 방법을 제안한다. 전체 혈관의 자동추적과 분기점 추출을 가능하게 하는 특징점 추정 방법과 혈관 형체의 자동추적 알고리즘 및 분기점 추출 방법을 ICG 망막 영상에 적용하여 실험한 결과 만족할 만한 성능을 보였다.

• Journal of Arbitration Studies
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• v.28 no.4
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• pp.111-129
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• 2018

The foundation of arbitration is the arbitration agreement between parties. If no agreement to arbitrate exists, the parties should not send to arbitrate their disputes. In the United States, there are no provisions as to arbitrability under the Federal Arbitration Act. Before a court can enforce arbitration, it must first determine arbitrability. The general presumption is that the issue of arbitrability should be resolved by the courts. The question of whether parties have submitted a particular dispute to arbitration raises a question of arbitrability which is an issue for judicial determination unless the parties clearly and unmistakably have provided otherwise. Determining if the parties agreed to arbitrate a dispute involves inquiries into whether there is a valid agreement to arbitrate the claims, and the dispute falls within the scope of the arbitration agreement. Therefore, the purpose of this article is to review how to settle the issue of arbitrability in the U.S. federal courts.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1505-1508
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• 2004

반응적 Ad hoc 라우팅인 AODV의 경로관리는 노드 이동, 노드 혼잡 등의 원인으로 지정시간 내에 응답을 하지 못할 경우 경로 단절을 감지한 뒤 경로복구 과정을 수행한다. 그러나 이러한 경로관리 방법은 능동적이지 못하여 단절 후 경로 재 설정까지 시간 지연이 발생하기 때문에 신속한 경로 복구에 어려움이 있다. 본 논문에서는 기존 AODV에 대한 추가적인 제어 패킷을 발생시키지 않고 경로를 구성하고 있는 이웃노드 Hello 패킷의 수신 시간차를 이용하여 경로 불안정을 예측, Expanding Ring Search 알고리즘을 활용한 효율적인 경로관리 기법을 제시한다.