• Journal of Welding and Joining
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• v.25 no.6
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• pp.4-10
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• 2007

• Journal of Welding and Joining
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• v.30 no.6
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• pp.6-9
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• 2012

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2008.11a
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• pp.45-49
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• 2008

본 연구는 TV광고음향의 사운드디자인에 대한 수용자 감성반응에 관한 연구이다. 연구방법으로 영상구조에서 음향이 없는 상태와, 음악설계사운드디자인을 제시 하였을 때 수용자가 받아들이는 음향감성반응을 뇌파측정을 통한 뇌 지수(BQT) 비교 방법으로 분석하였다. 본 연구를 통하여 영상에 있어 사운드의 시청각적 감성효과가 사운드디자인설계에 의하여 달라질 수 있음을 정량적 방법으로 확인할 수 있었다.

• Journal of Chest Surgery
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• v.18 no.3
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• pp.436-439
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• 1985

A patient of Ebstein`s anomaly underwent surgical repair on Oct. 24th, 1984. Tricuspid valve was replaced by 31mm St. Jude mechanical valve without plication of atrialized right ventricle. The annulus has been placed below the coronary sinus, with care not to damage the conduction system. But postoperatively complete heart block developed. Permanent pacemaker was implanted on his 12th POD. Now he has been followed up for 9 months. There was no hemodynamic problems yet.

• Journal of Chest Surgery
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• v.11 no.2
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• pp.123-128
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• 1978

This 18 year old girl with total anomalous venous connection, which was corrected surgically for the first time in Korea, is presented here. This patient has mild cyanosis, ejection systolic murmur with splitting of $S_2$ ,identical $O_2$ saturation of bleed samples from right and left chambers of the heart. The type was supracardiac TAPVC. On conventional cardiopulmonary by pass was used, and an right sided approach was employed. Post-op. course was smooth except for transient arrhythmia, low blood pressure and jaundice. She left hospital in a good general conditions.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2009.06a
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• pp.521-522
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• 2009

• Proceedings of the Optical Society of Korea Conference
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• 1990.07a
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• pp.6-12
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• 1990

GaAs 광전집적회로의 구현을 위해 MBE와 MOCVD system을 이용하여 수직 구조에 알맞는 광소자 및 전자소자를 개발하였으며 이 소자들의 집적화를 시도하였다. 발광소자로서는 Bcllcorc와 공동으로 MBE를 이용하여 표면 방출형 레이저 다이오드 및 array 구조의 연구가 시도 되었고 수직형 전자소자로서는 sclcctive MOCVD를 이용하여 W이 매몰된 VFET 구현하였다. VFET 위에 LED를 집적시켜 출력단의 수직 광전집적회로를 제안하고 제작하였으며 수신단 광전집적회로에서는 PIN 다이오드와 VJFET를 집적화한 광전집적회로가 현재 연구중에 있다.

• Proceedings of the KWS Conference
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• 2004.05a
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• pp.57-59
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• 2004

$CO_2$ 용접은 다른 용접에 비하여 와이어와 보호가스의 가격이 저렴하기 때문에 재료비 측면에서 매우 경제적이라는 장점이 있다. 그러나 $CO_2$ 용접은 타 용접에 비해 스패터 발생량이 많다는 문제점이 있었으나, 최근 파형제어 기법의 개발로 스패터 발생량을 SCR용접기에 비하여 80%이상 향상된 인버터 용접기가 개발되었다. (중략)

• Journal of Chest Surgery
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• v.11 no.4
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• pp.428-432
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• 1978

Between Jan. and Oct. 1978, mitral valve Replacement had been performed on eight patients using porcine aortic valve mounted on flexible polypropylene or Egyloil wire and Dacron covered stent. Mitral valve replacement was performed on five, mitral valve replacement with tricuspid valve replacement on two, and mitral valve replacement with tricuspid valve annuloplasty on 1 patient using five Carpentier and five Hancock Xenograft. Overall operative deaths were 2 cases. All other 6 cases did well after surgery and improved. No systemic thromboembolism occurred without anticoagulant-No valve failure took place. The results are satisfactory.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1983.10a
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• pp.44-47
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• 1983

Through intensity modulation induced by micro bending of an optical fiber, a sensor detects the pressure and frequency of acoustic wave has been implemented. Axial slots on the cylinder suface with a period of 5.5 mm induce efficient microbending of the fiber, and a rubber sleeve covering the fiber enhances the fiber. Compared with a conventional hydrophone, it has a low minimum detectable pressure and can detect acoustic wave in 100Hz - 2KHz range.