• Corrosion Science and Technology
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• v.9 no.5
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• pp.201-208
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• 2010

Epoxy coatings cured by different amine based curing agents have been prepared. Atomic force microscopy (AFM) has been used to monitor the surface topology changes of epoxy coatings before and after hygrothermal cyclic test. The glass transition temperature ($T_g$) and coefficient of thermal expansion (CTE) of the epoxy coating were measured by Thermo-mechanical Analysis (TMA). The Electrochemical impedance spectroscopy (EIS) with hygrothermal cyclic test has been introduced to evaluate the corrosion protection of the epoxy coatings. In conclusion, thermal properties of epoxy coatings were in good agreement with the results of corrosion protection of epoxy coated carbon steel obtained result by EIS with hygrothermal cyclic test. The relationship between thermal properties, surface roughness changes and corrosion protection of epoxy coatings are discussed in this study.

• 한국IT서비스학회:학술대회논문집
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• 2009.11a
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• pp.334-340
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• 2009

현재의 우리나라 전자관련 산업 분야 중 대기업과 협력관계에 있는 협력업체의 IT협업수준이 주로 생산현장과 관련있는 ERP나 GROUPWARE을 중심으로 초기단계의 적용 및 활용 수준에 머무르고 있을 뿐만 아니라 새로운 시스템도입 및 산업계의 변화를 적시에 반영시키지 못하는 단점이 있었다. 지속적인 전자 분야 산업 발전에 따라 보다 정확한 세부분야별 생산성 및 매출액 등의 데이터 활용이 필요할 뿐만 아니라 적극적인 GROBAL경쟁체제에서의 경쟁우위확보를 위하여 현행시스템의 고도화뿐만 아니라 생산, 재무데이타의 의미있는 연계를 통하여 EIS등의 솔루션을 집중도입하여, 경영의사결정을 효율적이고 신속하게 함으로서 국제적인 경쟁체계와도 시장 선도형 기업군을 가져야 할 필요성이 대두되고 있다. 본 논문에서는 기존의 국내외 전자산업 대중소 협력업체간의 협업체계의 현행시스템을 ISP기법을 적용하여 장단점을 분석한 후 새로운 공통의 시스템구축을 위한 상생혁신프로그램도입을 제안한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.11a
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• pp.157-158
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• 2018

In this study, the current tendency to replace a large amount of material admixture, which is fly ash (FA) and blast furnace slag (BS), into concrete is that high-grade cheese high admixture of high fluidity concrete In consideration of the substitution rate, we considered J-Ring to investigate the influence on the segregation resistance and the method of evaluating the classical segregation. In addition to the admixture replacement rate in the study results, the EIS using J-Ring became lower and the percentage of vehicles with segregation increased. Such a tendency is considered to be positive when J-Ring is used when segregation is judged if segregation degree is similar to EIS using J-Ring.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.11a
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• pp.61-62
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• 2014

To evaluate anti-corrosion performance of high-frequency arc metal spray film in accordance with metal type and epoxy sealing coat application status, electrochemical impedance spectroscopy(EIS) method was conducted in this study. As a result, in case of applying Al-Mg alloy metal spray film, it showed the best polarization resistance. In case of applying epoxy sealing coat, it showed increased polarization resistance of arc metal spray film. Through this experiment, it is judged that Al-Mg alloy arc metal spray film with epoxy sealing coat can increase the biggest anti-corrosion performance of high-frequency arc metal spray film on steel.

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.516-521
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• 2002

According as railway signalling equipments are computerized recently, necessity of communication protocol for interface between these equipments is increasing, Therefore the research about communication protocol structure that is need according to computerization trend of these signalling goes, especially communication protocol structure for interface between LDTS(Local Data Transmission System) and EIS(Electronic Interlocking System). Analyzed existent protocols that is applied currently for interfaces between above two signalling for this research and also technology analysis of internal/external similar protocols and operator and maker's requirement. With these study finding plain in this paper, explained summary of communication protocol structure for interface between LDTS and EIS.

• Proceedings of the KSR Conference
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• 2003.10c
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• pp.183-189
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• 2003

In this paper a simulation was done to verify performance of a message transmission protocol which interfaces LDTS(Local Data Transmission System) with EIS(Electronic Interlocking System), After a stage of analyzing link specifications between LDTS and EIS, transmission messages and messaging formats, simulation parameters were extracted, applied to the error control schemes such as ARQ, FEC, HARQ, and therefrom throughputs and various performance indices were analyzed Simulation program was constructed with Matlab and Matlab GUI and then converted into a stand-alone c++ program to be used on any non-Matlab environments.

• Journal of the Korea Institute of Military Science and Technology
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• v.19 no.3
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• pp.288-293
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• 2016

Electronic Image Stabilization(EIS) is widely used as a technique for correcting a shake of an image. The case requiring the EIS function has been increased in high magnification thermal image observation on portable military equipment. Projection Algorithm(PA) for EIS is easy to implement but its performance is sensitive to the projection area. Especially, projection profiles of thermal image have very modest change and are difficult to extract image shifts between frames. In this paper, we proposed algorithm to extract a feature image for the thermal image and compared Block Matching Algorithm(BMA) with PA using our proposed feature image. When using our proposed feature image, BMA was simply implemented using FPGA's internal small memory. And we were able to obtain 30 % PSNR improved results compared to PA.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2015.05a
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• pp.174-174
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• 2015

아연 도금 강판은 우수한 내식성으로 인해 널리 사용되고 있지만 최근 아연의 자원 고갈 및 지속적인 가격 상승문제로 인해 아연의 사용량을 줄이기 위한 연구 들이 진행 중이다. 최근 마그네슘이 첨가 된 아연 박막이 기존 아연 도금 강판에 비해 우수한 내식성을 갖는 결과들이 보고 된 바 있다. 본 연구에서는 비대칭 마그네트론 스퍼터링 방식을 활용해 합성된 Zn-Mg 박막을 전기화학적 임피던스 분광법 (EIS)을 통해 침지시간에 따른 전하이동저항의 변화를 분석하였다. EIS와 XRD 분석 결과에서 Zn-Mg 박막이 부식되면서 형성되는 안정한 simonkolleite 상이 전하이동저항의 증가에 큰 영향을 미치는 것으로 판단된다.

• Proceedings of the KIPE Conference
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• 2015.11a
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• pp.99-100
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• 2015

본 논문은 Hybrid Electric Vehicle용 리튬이온배터리의 ECM (Equivalent Circuit Model) 선정 방법을 제안한다. 전기 회로를 구성하는 성분들의 특징을 분석하고, 그 결과와 EIS (Electrochemical Impedance Spectroscopy) 장비의 측정 결과를 참고하여 배터리를 모델링한다. 다양한 종류의 배터리에 이 방법을 적용하여 각 배터리에 적합한 ECM을 선정하고, 그 임피던스를 EIS 측정 결과에 비교하여 타당성을 검증한다. 또한, 기존에 제시된 ECM과 비교하여 정확도 개선을 평가한다.

• Journal of the Korean Society for Railway
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• v.6 no.2
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• pp.135-141
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• 2003

According to the computerization of railway signaling systems, the interface link between these signaling equipment is also replaced by digital communication channel, expecially communication link for interface between EIS and LDTS, but there are some problems in the present state of railway signaling. First of all, different communication protocol is applied to interface between above two signaling equipment although they have same functions. The other is that the communication protocol currently used in railway field has some unreasonable points such as structure, formation of byte, error correction scheme and etc. To solve these problems, the standard communication protocol for railway signaling is designed. The structure of designed communication protocol and the results of performance analyses are represented in this paper. It will be expected the increase of safety, reliability and efficiency of maintenance of signaling system by using of the designed communication protocol for railway signaling.