• Proceedings of the KIEE Conference
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• 2005.10b
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• pp.130-132
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• 2005

This paper presents two ART-based neural networks for the identification of gas mixtures subject to the drift. A fuzzy ARTMAP neural network is used for classifying $H_2S$, $NH_3$ and their mixture gases including a reference gas. The other fuzzy ART neural network is utilized to detect the drift of a tin oxide gas sensor by tracking a cluster center of the reference gas. After detecting the drift, the previous cluster center of each gas is updated as much as the drift of the reference gas. By the simulations, the proposed method is shown to compensate the drift on-line without making many categories of target gases compared with the previous studies.

• Journal of Korean Biological Nursing Science
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• v.9 no.2
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• pp.153-158
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• 2007

Purpose: Cytokines have widespread and potent effects across the life span. This study was carried out to understand about cytokines that influence nursing research and practice. Method: Journal publications rewied include cytokine topics on CINAHL and Korean nursing research from January 2000 to December 2006. Result: In this study, the specific and numerical expression of for the level of Cytokines as a physiological factor related to the disease clearly provides the patient's disease mechanism and manifestation of the symptoms. Also, it can be the basise of nursing research and evidence-based nursing intervention. Conclusion: The practical use of Cytokines has to be considered to set up the direction of the nursing research and the study of the standard manual of Cytokines is continuously required.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1641-1642
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• 2015

Recently, the interest about Vehicle-to-Grid(V2G) system which can use the electric vehicles as generation sources or storage devices has rapidly increased. However, this technology does not use widely yet, and there is no clear standard or regulation for it. If electric vehicles are connected to the power system indiscreetly, it can cause problem to personnel safety and adverse effect on the power system. Therefore, it is important to analyze the related standards. In this paper, we introduce some international standard related with V2G system.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1639-1640
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• 2015

These days most of countries concern about eco-friendly energy. With this trend, the interests for Electric Vehicles(EVs) have been increased not only for its eco-friendly characteristics but also for the possibility that it can be used as Distributed Generation(DG). However, in terms of using EVs as DG, it requires specific standards. If there is no regulation and many of EVs start to discharge, it could cause severe unstability in power system. As there is no proper standards or regulations of Vehicle-to-Grid(V2G) system, we suggest the development direction of standardization of V2G system in the Republic of Korea by examining other countries' V2G standards.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1138-1139
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• 2015

본 논문은 디젤엔진용 Heating Urea - SCR (Selective Catalytic Reduction) 시스템을 구성함에 있어 변화되는 Euro-6 규제에 근간하여 Electrically Heated Line에 대한 저항력, 전도성, 온도 특성 등 전기적 설계 기법에 관해 서술하였고 Heating Urea-SCR Line을 위한 열선 설계, 전기적 및 물리적 상수에 대해 서술하였다. 이러한 전기적 설계 기법이 향후 양산을 위한 가격, 성능, 신뢰성 부분 및 제품의 경쟁력 요소에 가장 핵심이 되는 부분이다. 본 논문에서는 이러한 설계 기법의 구현을 위해 설계 절차와 설계 결과 도출을 위한 프로그램을 구현하였다. 향후 시제품의 모의실험과 실제 제품 제작을 수행 예정이고 본 논문의 설계 결과와 실제품 결과의 지표를 비교하여 최적의 Heated Line을 개발 하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.225-228
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• 2005

본 논문에서 제안한 실시간 모바일 감시 시스템은 소형 화상 카메라를 이용하여 PC상에서 구현할 수 있도록 함으로써 저렴한 비용으로 시스템 구축이 이루어 졌고, 동작 검출을 위한 영상처리에서 프레임 메모리를 사용하지 않고, 기준 영상과 현재 영상의 블록별 특징 값만을 비교하기 때문에 처리 속도가 현저하게 향상되었다. 검출된 영상을 모바일 클라이언트로 전송하기 위해서 WAP 풀 기반 영상전송 방법을 사용하여 WIPI SDK로 구현함으로써 감시 영상의 변환과 전송을 실시간으로 구현할 수 있었다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2011.10a
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• pp.301-306
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• 2011

In this paper, active noise barriers for attenuation of road noise are proposed. multi-channel audio systems, DAQ part and high performance DSP H/W were designed. Active noise control firmware programs were implemented for multi-channel off-line/on-line estimation methods for secondary path transfer functions and FIR/IIR filter structure are used main noise control algorithms. To evaluate performance of proposed systems, the experiments were performed in an active noise barrier test bed for various noise cases.

• 정보저장시스템학회:학술대회논문집
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• 2005.10a
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• pp.17-21
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• 2005

High-density image sensors have microlens array to improve photosensitivity. It is conventionally fabricated by reflow process. The reflow process has some weak points. UV imprinting process can be proposed as an alternative process to integrate microlens array on photodiodes. In this study, the UV imprionting process to integrate microlens array on image sensor was developed using W transparent flexible mold and simulated image sensor substrate. The UV transparent flexible mold was fabricated by replicating master pattern using siliconacrylate photopolymer. The releasing property and shape accuacy of siliconacrylate mold was analysed. After UV imprinting process, replication quality and align accuracy was analysed.

• Proceedings of the SAREK Conference
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• 2008.06a
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• pp.115-119
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• 2008

지구 자원고갈과 환경오염으로 인한 에너지 절약에 대한 관심은 최근 국제유가 상승에 의해서 국가의 사활을 건 정책으로 반영되고 있다. 하루 중 부하변동이 심하지 않으면서 각실 제어가 필요하지 않은 조건을 갖춘 공간에는 지역난방공사로부터 온수를 공급받아 건물을 냉방하는 방식이 일반적으로 보급되어 있다. 최근 에너지의 유효이용 측면에서 온수 온도차를 늘려 냉방 에너지 보급용량의 확대 및 설비비용을 절감하려는 움직임이 진행되고 있다. 에너지 절약 측면에서 접근하여 볼 때 효율을 상승시키는 방법과 이용열원의 극대화가 동시에 검토되어야 하며 각각의 장점이 있는 현장에 맞추어 다양한 방식이 적용되어야 할 것이다.

• Proceedings of the PSK Conference
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• 2002.04a
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• pp.171.2-172
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• 2002