• Journal of Korean Neurosurgical Society
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• v.44 no.3
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• pp.163-165
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• 2008

Kissing aneurysms are the rare type of multiple aneurysms. They are adjacent aneurysms of different origin arteries in the same region, which require great care in diagnosis and treatment. We report a case of kissing aneurysms at the anterior communicating artery (AcomA) which were treated by endovascular coil embolization.

• Proceedings of the KIPE Conference
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• 1998.10a
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• pp.488-492
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• 1998

Indirect sensing of the rotor position of permanent magnet brushless DC motors contains position error. Such measuring error can be attenuated by adopting Kalman filter. In this paper, the cause of measuring error is analyzed and the design technique of Kalman filter is described. Experimental results show that the proposed sensorless drive exerts superior performances.

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 2005.06a
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• pp.309-311
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• 2005

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2009.03a
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• pp.197-197
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• 2009

• 대한미세수술학회:학술대회논문집
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• 1997.10a
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• pp.132.2-133
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• 1997

• 대한예방의학회:학술대회논문집
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• 1996.10a
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• pp.257-258
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• 1996

• 대한예방의학회:학술대회논문집
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• 1996.10a
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• pp.333-334
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• 1996

• Proceedings of the KAIS Fall Conference
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• 2011.05a
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• pp.444-446
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• 2011

RFID(13.56MHz)를 이용한 자동 트래킹 시스템은 기본적으로 RFID 안테나와 리더부, Card(Tag)로 구성된다. 본 논문에서는 RFID 안테나의 크기와 출력 거리에 영향을 미치는 최적 Capacitance 값을 도출하는 방법을 제시한다. 제시한 방법의 타당성을 검토하기 위하여 RFID 안테나의 크기가 $0.0856{\times}0.05398m$이고 출력거리가 10~12cm에 가장 적합한 Capacitance 값을 도출하여 시제품를 설계 제작하여 정상적인 동작 상태를 확인하였다.

• Proceedings of the Korean Magnestics Society Conference
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• 2012.11a
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• pp.117-118
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• 2012

In this study, the magnetic and electronic properties of ${\alpha}-Mn$ have been investigated using the all-electron FLAPW method based on the GGA. The local magnetic moment of Mn atoms are consistent with previously calculated results. Detailed discussion on the structural, magnetic, and electronic properties of ${\alpha}-Mn$ will be given.

• Proceedings of the KIEE Conference
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• 2000.11c
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• pp.559-561
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• 2000

In this paper we present not only propagation of streamer but also chemical processes in air. The results of two-dimensional simulation are that chemical species have different densities in spatial domain and temporal domain. We show that photoionization plays important roles in streamer propagation and chemical reactions.