• Journal of Astronomy and Space Sciences
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• v.28 no.2
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• pp.143-153
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• 2011

The sundials produced in King Sejong era had the functions of accurate observation instruments and were fabricated in various forms such as Angbuilgu (hemispherical sundial). In this study, we investigated the literature, structural characteristics and principles of Hyeonjuilgu, Cheonpyeongilgu and Jeongnamilgu that were developed in Joseon to have the unique structures. Additionally, the sundials were reviewed in the perspective of technical history by comparing them with the sundials of China. For the restoration of the sundials, we identified the principle in which the light spots and shade of the sun were used, and drew the variations of the altitude and azimuth by the yearly motion of the sun on the Siban on the hemispheric and flat surfaces. Based on these results, we completed the design drawings of the three sundials and proposed the restoration models.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.05a
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• pp.227-230
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• 2009

This study was aimed to determine color sensibility factors for naturally dyed fabrics and to investigate their relationship with color variables such as hue and tone and dyes. Two hundreds different fabric colors prepared by a variety of natural dyeing were subjectively evaluated by color experts, which resulted in three color sensibility factors including 'Pleasant', 'Comfort', and 'Modem'. Among hues, Yellowish shade by natural dyeing was found as more pleasant and more comfort than any others. Among main tones for natural dyeing, g(grayish) and ltg(light grayish) were more felt in 'Comfort' whereas d(dull) more in 'Pleasant'. As for dyes, Gardenia Blue, Gardenia Yellow, and Anato tended to give feelings of 'Pleasant' whereas Raw Indigo and Loess did 'Comfort'.

• Cross-Cultural Studies
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• v.27
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• pp.145-166
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• 2012

In this Study, the search and analysis for the contents of the mass media, especially, such as newspaper articles, broadcast campaigns, broadcating advertisings, the Internet, etc, are accomplished under the assumption that the cause of the negative and fragmentary images about Africa holds a place in Korea's heart resulting from Korean mass media. Africa was seen as not only the continent of famine and diseases, but also a safari and the Nature's repository. However, these images are only the fragments of information about the African continent. So, we have to understand and recognize the origin of Africa in aspect of its learning and the mythology as well as the truth of the African as modern human origins. Moreover, we have to do our endeavor to have a good perspective about Africa as our future partner somewhat less than the wretched continent that we applaud their effort to the pursuit of stability and the development in terms of their modern cities, economy and politics and we have to aid and send relief cargoes simply.

• Journal of the Korean Graphic Arts Communication Society
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• v.10 no.1
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• pp.55-67
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• 1992

The character of standing box printing reguires a rich representation on a light and a shade of color and cause the modern photographs to be abundant of the ink and also show the continuity of which any other printing is incapable because of its profound gradation.The clear printing in gravure can be said to be due to the good transfer of the ink-the completion of the transference of the ink into the stencil paper and the clear transference of the printing tone.The most inportant matter is the distance between the printing press and the doctor line. It is the matter of the structure and arrangement because of giving the most affect on the dryness of the ink in the cell.The glue of the ink in gravure changes by the kinds of the dye and the cellusolve used.

• Textile Coloration and Finishing
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• v.24 no.2
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• pp.106-112
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• 2012

As a subsequent research of the previously reported$^{9)}$, a series of diaminoanthraquinoid blue dyes having hexyl, heptyl and octyl substituents were newly synthesized in order to investigate dyeability toward polypropylene fibers. As the length of alkyl groups introduced to the chromophore increased, the dyeability of the dyes toward polypropylene fibers also increased and then gradually decreased. From the result of dyeing, the hexyl-substituted dye showed the highest color strength and deep shade on pure polypropylene fibers. The good fastness rates to wash, rubbing and light were also obtained for all of the synthesized dyes.

• Journal of the Korean Graphic Arts Communication Society
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• v.10 no.1
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• pp.81-90
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• 1992

The charater of standing box printing reguires a rich representation in a light and a shade of color and caues the modern photographs to be abundant of the ink and also shows the continuity of which any other printing is incapable because of its profound gradation. The clear printing in gravure can be said to be due to the good transfer of the ink - the completion of the transference of the ink into the stencil paper and the clear transference of the printing tone. The most inportant matter is the distance between the printing press and the doctor line. It is the matter of the structure and arrangement because of giving the most affect on the dryness of the ink in the cell. The glue of the ink in gravure changes by the kinds of the dye and the cellusolve used. To make the printing somoothly progressive from the high glue of the ink to the low glue of the ink will have to be used, which will be possible to choose the ester.ose the ester.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.11a
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• pp.702-707
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• 2007

A Color Discerning Device(CDD) is the equipment to use in a Rice Processing Complex(RPC). A CDD can sorting discolored grain according to light and shade. The existing a CDD's driving performance is not so good as overseas machine. Besides, transportation process causes a defect in the mechanism from impact or harmonic excitation or etc. This study is represented the problem of CDD through experiment and simulation on a CDD. To analysis the problem of driving condition, devide each part of CDD for performed modal analysis. The problem of driving of driving condition and transportation process solved by carry out modal analysis and static analysis.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.11a
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• pp.571-576
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• 2006

A Color Discerning Device(CDD) is the equipment to use in Rice Processing Complex(RPC). By use a high-speed charge-coupled device camera, CDD can sorting discolored grain according to light and shade. The existing CDD's driving performance is not so good as overseas machine. Besides, transportation process causes a defect in the mechanism from impact or harmonic excitation or etc. This study is represented the problem of CDD through modal analysis and static analysis by using ANSYS workbench. To analysis the problem of driving condition, devide each part of CDD for performed modal analysis. The problem of driving condition and transportation process solved by carry out modal analysis and static analysis.

• Journal of Ginseng Research
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• v.18 no.3
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• pp.182-186
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• 1994

This study was conducted to define the effects of color of polyethylene (P.E.) net shading on the meteorological conditions under the shading growth status, photosynthesis and saponin contents of ginseng plant. Red and blue polyethylene net shading (4 fold) showed a good light intensity of ginseng growth, but red one not only increased air temperature but also resulted in early defoliation. Photosynthetic rate of ginseng leaves was increased in order of red, blue and black shade, Root yield and saponin contents were significantly increased red and blue net as compared with those of common straw shading. Blue color appeared to be most recommendable.

• Journal of Plant Biology
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• v.38 no.3
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• pp.275-280
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• 1995

The formation of osmiophilic globules related to the granal lysis has been investigated with a shade plant ginseng (Panax ginseng C. A. Meyer) exposed to full sunlight. The changes of chloroplast were examined as a function of time over 9 days under full sunlight exposure. The ultrastructure of ginseng leaf showed swelling of the granal thylakoid during an early stage of the light exposure. The thylakoid membrane faded and small electron-opaque dots were aggregated on the edges of the granal thylakoid membrane when the exposure time was increased over 1 day. Then, the sahpe of the grana changed into round. After the exposure over 3 days, there appeared many osmiophilic globules with multi-lamellated concentric structure. The globules at this stage were partly accumulated with osmiophilic substances. The outermost membrane of these multi-lamellated osmiophilic globules was attached to the stromal thylakoid membrane connecting to the deforming grana. The osmiophilic globules were elongated after 9 days. In this stage, the multi-lamellated structure was difficult to identify due to severe accumulation of osmiophilic substances. The number of the osmiophilic globules also increased along with the full sunlight exposure time. This observation leads us to believe that the multi-lamellated osmiophilic globules came from the deformation of grana.