• Proceedings of the KIEE Conference
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• 2003.07b
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• pp.1163-1165
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• 2003

This paper presents the TTFC(Two Transistor Forward Converter) using Synchronous Rectifier. The principle of operation, feature ana design considerations are illustrated and verified through the experiment with a 200W 100kHz MOSFET based experimental circuit.

• Proceedings of the KIEE Conference
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• 2009.04b
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• pp.131-135
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• 2009

This paper reviews the characteristics of Power MOSFET device technology that are leading to improvements in power loss for power electronic system. The silicon bipolar power transistor has been displaced by silicon power MOSFET's in low and high voltage system. The power electronic technology requires the marriage of power device technology with MOS-gated device and bipolar analog circuits.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.314-315
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• 2007

자동차용 부품인 밸브씰 비전 검사 시스템을 개발하였다. 구성부품은 8 대의 독립형 CCD 카메라, 검사를 위해 밸브씰을 공급해 주는 기구장치 및 검사 모니터링 시스템으로 구성되었다. 밸브씰의 대표적인 불량 유형 1가지에 대한 영상처리 알고리즘을 제안하고, 알고리즘의 효율성은 실험을 통하여 확인하였다.

• Archives of Pharmacal Research
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• v.20 no.1
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• pp.80-84
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• 1997

Substituted cinnamoyl-tyramine derivatives were synthesized by DCC-coupling of substituted cinnamic acid with tyramine or tyramine methyl-1-ether to evaluate PAF-receptor binding antagonistic activities and inhibitory activities on PAF-induced platelet aggregation with interest on structure-activity relations. The results show that 3,4-dimethoxy-cinnamoyl tyramine-amide or its methyl ether have significant PAF-receptor binding antagonistic activity and platelet anti-aggregatory activities.

• Journal of applied mathematics & informatics
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• v.25 no.1_2
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• pp.483-488
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• 2007

Given a set ${\Omega}$, the notion of ${\Omega}-fuzzy$ ideals in a near-ring is introduced, and related properties are investigated. Using fuzzy ideals, ${\Omega}-fuzzy$ ideals are described. Conversely, fuzzy ideals are constructed by using ${\Omega}-fuzzy$ ideals.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.10a
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• pp.435-436
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• 2009

• Journal of the Korean Chemical Society
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• v.49 no.1
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• pp.47-55
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• 2005

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2005.10a
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• pp.189-190
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• 2005

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.571-572
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• 2011

지금까지 뇌와 관련된 언어, 감정, 시각, 촉각 등 의학적 영역에서 뇌에 관한 연구들이 활발히 이루어져 왔다. 그러나 이러한 의학적, 심리학적 성과와 IT와의 융합 및 응용은 아직 초보적인 단계이다. 따라서 의학적으로 입증된 뇌 영역에서 발생하는 뇌파에 대해 보다 세밀한 분석 및 연구를 통해 실질적인 응용 가능한 BCI를 구현해보고자 한다.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.67-68
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• 2003

Cerebral ischemia, the most prevalent form of clinical stroke, is a medical problem of the first magnitude. Substantial efforts are being made to develop drugs which will protect the brain from the neurodegeneration that follows ischemic stroke. However, no medical treatment is currently approved for the treatment of stroke to reduce brain infarction or neurological disability beyond tissue plasminogen activator. (omitted)