• Title/Summary/Keyword: DRAGON

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A Study on Manufacturing Techniques and Conservation Treatment for Yongjam, Ceremonial Hairpin with a Dragon-shaped Engraving in 17th Century - Focusing on Yongjam of the Clothes Worn by Oejae Yi Dan-ha and His wife, National Folklore Cultural Heritage No.4 - (17세기 대례용 용잠의 제작기법 조사와 보존처리 - 국가민속문화재 제4호 외재 이단하 내외옷 용잠을 중심으로 -)

  • Ryu, Dongwan;An, Boyeon;Lee, Ryangmi;Lee, Jaesung;Park, Yeonghwan;You, Harim
    • Journal of Conservation Science
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    • v.37 no.3
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    • pp.270-281
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    • 2021
  • The Yongjam of Oejae, Yi Dan-ha's wife, is an ornamental hairpin with a dragon-shaped engraving; designated as National Folklore Cultural Heritage No. 4. It is also a component of the ceremonial costume, and an artifact of great value as it clearly identifies the position of the wearer and the period of this artifact. The Yongjam has been well preserved in general; however, various pollutants and corrosive products have affected the engraved patterns, requiring conservation treatment. Furthermore, a non-destructive analysis was conducted to identify the components of the materials and the manufacturing techniques used in the ornament. The Yongjam is hollow inside to reduce its weight when placed in the hair and has a color contrast of gold, red, and black. The decorative part and the body were made separately. That is, the body was made from an alloy of copper, silver, and zinc, and its joint was elaborately connected without any overlaps. In the decorative part, different alloy ratios were identified in the dragon's face, beard, horn, body, and fin. Further, for the dragon's face with its delicate patterns, an alloy of silver and copper was used, likely to make the face appear as realistic as possible.

Trotting Gait Generation Based on the Lizard Biometric Data (도마뱀 생체 데이터를 이용한 속보 걸음새 생성)

  • Kim, Chang Hoi;Shin, Ho Cheol;Lee, Heung Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.62 no.10
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    • pp.1436-1443
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    • 2013
  • A variety of studies on imitating the skeletal structure and the gait of legged animals have been done in order to develop walking robots which have an ability to adapt to atypical environments. In this paper, we analyzed the gait of a Bearded dragon lizard using the motion capture system, proposed a calibration scheme of the motion data and generated the trotting gait of a lizard based on the calibrated data. Also, we constructed the dynamic model based on the biometric data of a Bearded dragon lizard and applied the trotting gait of the lizard to the dynamic model. We verified the validity of the gait with the commercial dynamic simulation software.

Recent Developments of Wave Energy Utilization in Denmark

  • Kofoed, J.P.;Frigaard, P.;Kramer, M.
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2006.11a
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    • pp.91-98
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    • 2006
  • This paper aims at giving an overview of the developments researchers at the Department of Civil Engineering, Aalborg University, Denmark (DCE), have been involved in within the field of wave energy utilization in Denmark over the past decade. At first a general introduction is given followed by a more thorough description of three ongoing projects. These are Wave Dragon, Wave Star and Seawave Slot-cone Generator. Common for these projects are that they are being, or will soon be, tested in real sea and have benefited from the Danish Wave Energy Program. The work by the department on these projects involves substantial laboratory testing, numerical simulations and real sea prototype testing.

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Optical design of soft X-ray region monochromator (Soft X-ray 영역 단색화 장치의 광학적 설계에 관한 연구)

  • 성면창;최원국;황정남;정광호;김영식
    • Korean Journal of Optics and Photonics
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    • v.3 no.2
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    • pp.86-91
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    • 1992
  • We describe the design of a soft X-ray grating monochromator for synchrotron radiation in the photon energy range 300~1200eV. We investigate the optimum condition in optical parameters of CEM (cylindrical element monochromator), whose performance is well known by Dragon beam line installed recently at Brookhaven National Laboratory by C. T. Chen, fitting the parameter of PLS (Pohang Light Source) storage ring construction.

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The Symbol of Hùng Kings: From a Founding Myth to Modern National Belief

  • Hoang Huu Phuoc
    • SUVANNABHUMI
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    • v.15 no.1
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    • pp.129-148
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    • 2023
  • Using sociohistorical approaches, the paper shows that before the 15th century, myths of Hùng Kings, considered to be the descendants of the Dragon race and ancestors of the Vietnamese people, may have existed locally. Vietnamese rulers and people strongly supported the integration of these myths into indigenous culture to form a new belief: the worship of Hùng Kings. By way of discovering the transformation process from the founding myths to the modern national beliefs of the Vietnamese, this paper attempts to demonstrate that both myths and worship of Hùng Kings were politically created and encouraged. The article also focuses on the reasons why these myths and worship reached a broad public as these were integrated into Vietnamese culture.

Low Magnetic Field MRI Visibility of Rubber-Based Markers

  • Kim, Jeong Ho;Jung, Seongmoon;Kim, Jung-in
    • Progress in Medical Physics
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    • v.30 no.4
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    • pp.89-93
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    • 2019
  • Purpose: This study aims to develop new markers based on silicone rubber and urethane rubber to enhance visibility in low magnetic field magnetic resonance (MR) imaging. Methods: Four types of markers were fabricated using two different base materials. Two of the markers were composed of two different types of silicone rubber: DragonSkin™ 10 MEDIUM and BodyDouble™ SILK. The other two markers were composed of types of urethane rubber: PMC™ 780 DRY and VytaFlex™ 20. Silicone oil (KF-96 1000cs) was added to the fabricated markers. The allocated amount of oil was 20% of the weight (wt%) of each respective marker. The MR images of the markers, with and without the silicone oil, were acquired using MRIdian with a low magnetic field of 0.35 T. The signal intensities of each MR image for the markers were analyzed using ImageJ software and the visibility for each was compared. Results: The highest signal intensity was observed in VytaFlex™ 20 (279.67±3.57). Large differences in the signal intensities (e.g., 627% in relative difference between BodyDouble™ SILK and VytaFlex™ 20) among the markers were observed. However, the maximum difference between the signal intensities of the markers with the silicone oil showed only a 62% relative difference between PMC™ 780 DRY and DragonSkin™ 10 MEDIUM. An increase in the signal intensity of the markers with the silicone oil was observed in all markers. Conclusions: New markers were successfully fabricated. Among the markers, DragonSkin™ 10 MEDIUM with silicone oil showed the highest MR signal intensity.