• Journal of Digital Convergence
• /
• v.18 no.10
• /
• pp.419-428
• /
• 2020

This study was intended to academically redefine the art of seal engraving of the Joseon Dynasty through seal analysis related to Kim Jeong-hui and to widely promote its excellence. Previous studies on seals were examined, and comparative studies were conducted focusing on the seals engraved by Kim Jeong-hui and the related seals. The importance of the real seal study, not the stamp, was confirmed. If there was a byeongwan on the side of the seal, it was possible to understand that Kim Jeong-hui directly carved the seal. Also, it was possible to confirm the stone quality of the seal, the method of writing, the method of layout, and the method of holding graver. The imitation seal engraved with a tool rather than hand made it easy to grasp the uncertain production intent. All were analyzed by actual tensile, so it was a possible study result. The results of this study will serve as an indicator to judge the authenticity of the seal when evaluating an ancient painting in the future.

• Applied Chemistry for Engineering
• /
• v.19 no.1
• /
• pp.117-121
• /
• 2008

In this study, thin YSZ film was prepared by electrostatic spray deposition. The morphology of thin film was strongly influenced by precursor solution and substrate temperature. Especially, dense YSZ film was obtained at the substrate temperature of $400^{\circ}C$. The YSZ film growth rate was $12{\mu}m/h $ at the optimum conditions. Product film was characterized by XRD, FE-SEM and EDX.

• Journal of the Korean GEO-environmental Society
• /
• v.17 no.9
• /
• pp.5-12
• /
• 2016

Numerical analyses were carried out to simulate tilting control on the suction pile for offshore wind power embedded into cohesive soil and cohesionless soil using finite element software, ABAQUS. A 3-dimensional suction pile was modelled as a wished-in-place pile with $1^{\circ}$ tilted from vertical line. The inner room of suction pile was divided into 3 separate rooms for tilting control, and point load was applied to the center of gravity of a separate room to restore the original position of the suction pile. From numerical analyses, required suction pressure was obtained for desired tilting degree, and the maximum/minimum principle stresses of concrete skirt and the Mises stresses of inner steel wall were collected at original position. It was found that the required suction pressure was about 410 kPa for cohesive soil, and about 1,800 kPa for cohesionless soil.; likewise, obtained stresses were greater for cohesionless soil than cohesive soil.