• The KSFM Journal of Fluid Machinery
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• v.11 no.4
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• pp.77-85
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• 2008

• Korean Journal of Heritage: History & Science
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• v.49 no.2
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• pp.122-141
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• 2016

It is known that Sung-gyu Jeon and several other Korean artisans were invited to "Joseon-Najeon Company" of Kimura Tenko in Takaoka, Japan to teach the skills of making lacquerware inlaid with mother-of-pearl, however these artisans discovered a new tool called fretsaw during the visit, which can easily cut nacre. The introduction of fretsaw in the 1920s in Korea innovated the Jureumjil(filing) technique and dramatically changed the style of modern Korean lacquerware inlaid with mother-of-pearl. In this paper, I will focus on the case of Sung-gyu Jeon, Kimura Tenko and "Joseon-Najeon Company". I will also examine why and how the Korean lacquerware artisans went to "Joseon-Najeon Company" in Takaoka and exactly what they did there. This analysis will help in discovering how the Korean artisans' experience in Takaoka affected their works after they came back to Korea.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.10a
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• pp.326-327
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• 2009

• Proceedings of the Optical Society of Korea Conference
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• 2006.02a
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• pp.233-234
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• 2006

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.05a
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• pp.219-219
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• 2007

• Proceedings of the KIPE Conference
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• 2004.07b
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• pp.910-913
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• 2004

This paper is about to develop a system to monitor speed droop rate characteristic of turbine governor for electric power plant. High quality electricity can be obtained, and so electricity supplier get more profit through it. Developed system presents basis of judgement of unusual system and proper maintenance time for the governor and power plant.

• Bulletin of the Korean Chemical Society
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• v.26 no.3
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• pp.371-372
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• 2005

• Development and Reproduction
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• v.25 no.1
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• pp.73-73
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• 2021

• Journal of Korea Foundry Society
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• v.26 no.2
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• pp.57-62
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• 2006

• Proceedings of the KIPE Conference
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• 2010.11a
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• pp.354-355
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• 2010

본 논문에서는 5kW급 가정용 DC급전 시스템을 모의하고 시스템 도입 시 발생 가능한 문제점을 실증하기 위하여 5kW급 가정용 DC급전 Test-Bed를 시뮬레이션 및 제작한다. 가정용 DC급전에 필요한 DC link를 5kW급 PWM 컨버터를 이용하여 380V의 고전압 DC link를 구성하고 1kW급 위상 천이 컨버터를 이용하여 12V의 저전압 DC link를 구성하여 고전압, 저전압 DC급전 상황을 비교 분석할 수 있게 한다. 또한 모터 구동 부하를 모의하기 위한 2kW급 인버터를 추가하여 부하 환경에 따라 DC급전 시스템에서 발생 가능한 문제점을 유도할 수 있도록 한다.