• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.33 no.4
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• pp.112-128
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• 2015

To consider an identity about traditional folk village, this study analyzes color characteristic of traditional folk village by targeting Cuandixia folk village in China. For method of study, color is analyzed by KSCA(Korea Standard Color Analysis) program and images of color are drawn by I.R.I. Based on these, four results are came out. First, color distribution of Cuandixia is appeared in YR, R, Y, GY order. Furthermore, there are no affiliation of BG, and B but a lot of affiliation of YR. Second, the whole is made up of color that is applied to mist gray/low chroma in the value and chroma stakes. Especially, high chroma is extracted by only commercial old house, the rest is made up of middle and low chroma color. Third, dark color is the most by KS Color System and dark reddish gray and medium gray are occupied most part. Fourth, the whole atmosphere of village is static and hard, and the image is researched as gentle. Through the research, It applies extracted color palette for plan and preservation of traditional folk village. As using the color that is reflected in national and local distinct characteristic, preserving the color reflected in history and culture of the village, and applying color planning considered harmony with surrounding environment, it is expected that it can help to direct the color involved traditional and cultural meaning.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.772-781
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• 2016

This study is to set the objective criteria on maxillary incisors shade selection by using the colorimetric Shade-Eye NCC as measuring in CIE $L^*$, $a^*$, $b^*$ values, and look into the meaning by analyzing its values. We explain the purpose of this study and gotten their agreement from patients visiting the dentist, 111 people's (men 50, women 61) three teeth, the maxillary central incisor, maxillary lateral incisor, maxillary canines, total of 333 teeth colorimetry. As a result of comparing the differences in colors between cervical margin and incisal edge, ${\Delta}E^*$ of canine is shown as low as $5.81({\pm}2.98)$, followed by lateral incisor of maxilla as $6.51({\pm}3.23)$ and central incisor of maxilla $7.51({\pm}3.04)$. Females show higher luminosity(L*) than males do in all teeth- central incisor, lateral incisor and canine; in yello chroma(b*) males' central incisor is slightly higher than that of females (p<0.05). Age significantly influences the luminosity and red (a*) and yellow chroma (b*) of central incisor(L*); the luminosity(L*), and yellow chroma(b*) of lateral incisor and canine (p<0.05). Smoking doesn't significantly influence the color of natural teeth. Drinking reduces the luminosity of central incisor as well as red chroma of lateral incisor(p<0.05). A chronic illness is likely to reduce the luminosity of central incisor and lateral incisor(p<0.05).

• Journal of Korea Foresty Energy
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• v.25 no.2
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• pp.22-27
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• 2006

K/S values, Hue, Value, and Chroma changes of the hot-water and alkali extract of Boehmeria tricuspis have investigated to obtain an optimum dyeing conditions. Maximum optical absorption of the cotton, Hanji, and silk dyed with the extract were observed at 400 nm. The K/S value of the dyed silk was higher than those of other materials in the treatments with the temperature and time condition and there was not much changes in the treatments near $80\;^{\circ}C$ and 40 minutes. Also, the K/S value of the dyed silk was drastically increased as the concentration of the dye was increased. In the treatments with temperature and time condition, Hue of the materials dyed with alkali extracts resulted in YR color, whereas materials dyed with hot-water extracts provided R color. In the time and temperature condition of treatment, there were no significant changes in the samples treated near $80\;^{\circ}C$ and 40 minutes. The Value and Chroma of the dyed materials were not significantly changed. As a result, it is suggested that the optimum temperature, time, and concentration of dye would be $80\;^{\circ}C$, 40 minutes, and 100%, respectively, when cotton, Hanji, and silk are dyed with Boehmeria tricuspis extract.

• The Journal of Korean Academy of Prosthodontics
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• v.38 no.2
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• pp.147-159
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• 2000

The purpose of this study was the evaluation of spectral transmission of the commercial three shade guides and the relationship of hue, value, and chroma according to the transmission rate. The spectral transmittance of three shade guides - Vita Lumin Shade Guide, Vintage and Unibond Shade Guide, and Vitapan 3D-Master Shade Guide - were measured. For direct transmission measurements, each shade tabs were placed at the entrance port of the 1mm diameter intergrating sphere. The intensity of the light source passing through the shade tabs to the right angle was continuously recorded for wavelength from 400 to 700 nm. A transmission spectrum and digital data were obtained for each measurement and they were evaluated using Microcal Origin program. The obtained results of this study were as follows : 1. In Vita Lumin Shade Guide, sum of the transmission rate of the shade tabs at the wavelength 400-700nm was decreased in agreement with the arrangement order at each A, B, C, D group, except D4 shade tab. However, there were no relationships between the transmission rate of the shade tabs and the value-oriented. 2. In Vintage and Unibond Shade Guide, sum of the total transmission rate of the shade tabs was decreased in agreement with the arrangement order at each A, B, C, B group. When all shade tabs arranged in value-oriented, transmission rate was accord with the order, except D4 shade tab. 3. When shade tabs of the Vitapan 3D-Master Shade Guide have the same value and hue, sum of their total transmission rate decreased in accordance with the chroma-oriented. When the shade tabs have the same value and chroma, there were no differences from the order of the transmission rate to the various hue type. However, in the 'R' tabs of reddish hue type, the transmission rate increased at the long wavelength range area. In conclusion, we need the quantitative analyzing instruments in transmission determination. Vitapan 3D-Master Shade Guide covers the tooth color space taking into account the parameters of the systematic value, chroma, hue oriented, and the transmission rate relatively accorded with that sequence.

• Journal of Bio-Environment Control
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• v.19 no.3
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• pp.171-176
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• 2010

To investigate the effect of leaf removal on enlargement and coloring of persimmon fruits (Diospyros kaki L. cv. 'Fuyu'), four treatments control (0%), 20%, 50%, and 100% depend on leaf removal of fruit bearing branch were applied to persimmon trees. Sunlight intensities around fruits with treatments depend on removal level, compared with natural sunlight intensity (100 percentage level), was 7.9%, 13.6%, 16.4%, and 30%, respectively. Hunter $a^*$ of the fruit with control and 20% removal treatments to harvest season increased continuously. $Chroma^*$ of the fruit since the removal treatments of leaves increased continuously in all treatments, but from seventh week that had a decreasing tendency. The fruit weight and diameter were significantly heavy and short in treatments with 100% removal level. L/D ratio of the fruits had a significant difference between control and the other treatments. Soluble solids of the fruits lowed significantly in treatment with 50% removal level. Hunter $a^*$ of the fruits was better in treatments with control and 20% removal levels, Hunter $b^*$ and $Chroma^*$ lowed significantly in treatment with 20% removal level. $\beta$-Carotene and lycopene concentration of the fruits lowed in treatment with the higher of removal level, total chlorophyll contents had the opposite tendency to the pigments. All results considered, removal level of leaves around fruit on bearing branch in fruit maturation stage had effect on fruit coloring improvement.

• Horticultural Science & Technology
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• v.28 no.5
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• pp.757-761
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• 2010

This research was conducted to investigate effect of ethephon on fruit enlargement and coloring of 'Fuyu' persimmon ($Diospyros$ $kaki$). At 7 weeks after ethephon treatment, fruit weight and diameter became significantly heavier and longer in 80 and $100mg{\cdot}L^{-1}$ than the other concentrations of ethephon. Fruit peel hardness decreased with increasing ethephon concentration. The decreased levels were apparent with the treatments beyond $40mg{\cdot}L^{-1}$ at the beginning, and then with those beyond $60mg{\cdot}L^{-1}$. Hunter $a^*$ and $Chroma^*$ of fruit peel treated with ethephon over $20mg{\cdot}L^{-1}$ were significantly higher compared to those with control ($0mg{\cdot}L^{-1}$), but there were no significant differences among those with the ethephon treatments over $20mg{\cdot}L^{-1}$. The increased levels of the $Chroma^*$ were apparent with the treatments beyond $60mg{\cdot}L^{-1}$ at the beginning and then with those of 20 and $40mg{\cdot}L^{-1}$. ${\beta}$-Carotene and lycopene contents of fruit peel were higher with the ethephon treatment beyond $40mg{\cdot}L^{-1}$. Although the ethephon application at 20 and $40mg{\cdot}L^{-1}$ had no effects on fruit enlargement, but fruit coloring was advanced by 2 weeks with the application at $40mg{\cdot}L^{-1}$.

• Journal of the Korean Institute of Landscape Architecture
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• v.44 no.6
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• pp.120-136
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• 2016

This study, views the color of scenery not as a static state, but rather as a continuous sequence of perceptions that incorporates the concept of time. This study derived techniques to quantitatively analyze the flow and data from this sequence. By utilizing this, urban color trends can be based on openness. This is very close to what would be experienced by an actual viewer: it extracted color data and visual amount from frames at 2-second intervals by shooting a video of the color sequence of the city as seen from both the left and right sides from the inside of the monorail (line 3 of the Daegu urban railway). These images were classified by color group, brightness, chroma, high chroma distribution derived techniques such as openness of space, brightness level, clarity level, high-chroma distribution and code, advantage of visual amount, dominant factor exposure, hot and cold color image and dynamic of sequence rhythm. During the derived sequence, the data determines the openness in the visual amount of sky and it was found that the tendency of the colors of the city was opening regression analysis. The more colorful the city is opening the brightness is lowered, the chroma increased slightly, cold colors significantly increased, which also had a very deep relationship with Lynch enclosed proportion, color change of the city trends through the actual scenery could grasp in more detail.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.28 no.3
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• pp.53-59
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• 2010

This paper mainly focuses on the Korean Folk Village and Beijing Si-He-Yuan, according to the color theory of hue, value and chroma of Munsell color system to demonstrates the similarities and differences of the traditional upper-class housing between South Korea and China. As the neighboring countries sharing very similar culture and philosophy which owe to the continual communications between China and Korea in the history. The Obangsaek which is derived from the thought of five-elements profoundly and deeply impact on the color selection of traditional housing in both countries. According to the quantitative analysis of photographs, it was found that: 1. The commonly used colors in Korea are Y, YR and neutral color, but in China, people usually used R and GY, especially the high chroma red in Beijing Si-He-Yuan was used as a symbolic color. 2. The chroma preference of traditional housing reveals that people in China used to apply the polychrome and various brightness, on the contrary, the color of low chroma and high lightness were used to be applied in Korea which can give the sense of simplicity and tranquility. 3. Red, one of the Obangsaek affects the color characteristic of Beijing Si-He-Yuan critically but scarcely impact on the color characteristic of Korean Folk Village.

• Journal of Conservation Science
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• v.25 no.1
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• pp.17-24
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• 2009

The feasibility of the geopolymer as a cultural asset restoration material was studied by investigating compressive strength and chromaticity change. Metakaolin that was synthesized by calcination of the kaolin at $750^{\circ}C$ for 6 hours was used as a geopolymeric starting material. Kaolin lost its crystallinity and changed into non-crystalline phase during calcination. NaOH solution and water glass were used as an initiator for the geopolymeric reaction. As the concentration of NaOH solution and water glass increased the compressive strength increased. When alumina was substituted with metakaolin, the compressive strength decreased at a small amount of alumina, but increased at a large substitution. For the most composition of geopolymers, the change of chroma values remained within the limit of slight variation after exposure to sunlight for 8 and 100 days. However, even small amount of organic pigment addition increased chroma values of metakaoline. It was shown that geopolymer had excellent chroma value change over epoxy resins.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2011.05a
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• pp.79-80
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• 2011