• Korean Journal of Remote Sensing
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• v.37 no.3
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• pp.419-430
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• 2021

Remote sensing techniques using drone-based multispectral image were studied for fast and two-dimensional monitoring of algal blooms in the river. Drone is anticipated to be useful for algal bloom monitoring because of easy access to the field, high spatial resolution, and lowering atmospheric light scattering. In addition, application of multispectral sensors could make image processing and analysis procedures simple, fast, and standardized. Spectral indices derived from the active spectrum of photosynthetic pigments in terrestrial plants and phytoplankton were tested for estimating chlorophyll-a concentrations (Chl-a conc.) from drone-based multispectral image. Spectral indices containing the red-edge band showed high relationships with Chl-a conc. and especially, 3-band model (3BM) and normalized difference chlorophyll index (NDCI) were performed well (R²=0.86, RMSE=7.5). NDCI uses just two spectral bands, red and red-edge, and provides normalized values, so that data processing becomes simple and rapid. The 3BM which was tuned for accurate prediction of Chl-a conc. in productive water bodies adopts originally two spectral bands in the red-edge range, 720 and 760 nm, but here, the near-infrared band replaced the longer red-edge band because the multispectral sensor in this study had only one shorter red-edge band. This index is expected to predict more accurately Chl-a conc. using the sensor specialized with the red-edge range.

• (The)Study of the Eastern Classic
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• no.66
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• pp.331-362
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• 2017

The paintings of the Eight Drunken Immortals refer to the paintings based on an influential poem called "The Song of the Eight Drunken Immortals" by Du Fu, a Chinese poet from the Tang Dynasty. This poem is about the eccentricity of the Eight Immortals known for their love of drinking. The Eight Drunken Immortals have been widely appreciated among East Asian intellectuals, and their stories have also been translated into paintings. Greatly influenced by Li Gonglin's Painting of the Eight Drunken Immortals, people in China have the tendency to create similar scroll paintings, using contour drawing tools. Meanwhile, in Korea, the paintings of the Eight Drunken Immortals have been widely appreciated both as a type of visual art embodying the Drunken Immortals' taste for the arts and as a meaningful object conveying the people's wish for longevity and eternal friendship. According to historical records, the paintings of the Eight Drunken Immortals from the Ming Dynasty were drawn on eight-fold folding screens using a sophisticated ink wash painting technique. In the meantime, the Painting of the Eight Drunken Immortals appreciated by King Jeongjo from the Joseon Dynasty was a colored landscape painting with small human figures on an eight-fold folding screen. Since the recent discovery of Yi Han-cheol's Painting of the Eight Drunken Immortals on an eight-fold folding screen, it has now become possible to imagine how renowned artists such as Kim Hong-do and Kim Yang-gi would have made the narrative figure paintings. In particular, the story of Li Bai, one of the Eight Immortals, was the most famous one often told in the paintings. After the 19th century, there was even an entire panel of narrative folding screen made about Li Bai. As painting manuals and outline drawings were pervasively used, the narrative paintings on Li Bai were mass-produced among commoners. As you can see from this, the Eight Drunken Immortals have been visually represented as thirsty souls who are not disconnected from the world, as honest men of refined taste for the arts, and as protagonists of an object that conveys the people's wish for longevity and eternal friendship. In other words, the paintings of the Eight Drunken Immortals embody multiple undertones: as paintings based on Du Fu's poems and as narrative paintings on the Eight Immortals.

• Journal of Nutrition and Health
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• v.42 no.1
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• pp.23-37
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• 2009

The purpose of this study was to investigate the health status of preschool children using the questionnaires about dietary behaviors and anthropometric indices. And also nutritional status was investigated using questionnaires for 24-hr recall method. The study was conducted in 145 children aged 3 to 6 years and questionnaires for dietary behaviors and dietary intakes were performed by mothers of children in Ulsan. Just nine percent of children were graded as good in terms of having healthy eating habits, this means that the nutrition education for the dietary behaviors should be more focused on preschool children. With regard to the frequency of food intake, children consumed green & yellow vegetables less frequently, meanwhile consumed high protein source food (meat, egg and bean) and milk and its product more frequently. Children almost never consumed fried foods as often as 1-2 times a weak. In assessment of the health status, children have the highest prevalence of colds and allergy, but lower prevalence of clinical symptoms due to the nutritional deficiency. The mean height was $103.6\;{\pm}\;6.4\;cm$ and significantly different among age (p < 0.05), but was not significantly different between sex. The mean weight was $17.8\;{\pm}\;3.0\;kg$ and significantly different in 5, 6years old among age. By the WLI criteria, 11.1% of children were underweight and 17.4% of children were overweight or obese. By the Rohrer index criteria, any children were not underweight and 86.8% of children were overweight or obese. By the Kaup index criteria, 2.8% of children were underweight and 29.2% of children were overweight or obese. And Obesity Index criteria, 2.1% of children were underweight and 20.8% of children were overweight or obese. The results of obesity rate by all criteria except Rohrer index indicated similar level, were significantly high in age 3 with all criteria, and decreased with age increased. The energy intake of children was lower than EER (Estimated Energy Requirements) of Dietary Reference Intakes for Koreans (KDRIs) by as much as 85.7%. Acceptable Macronutrient Distribution Ranges (AMDR) was 62.6:21.5:15.7 as carbohydrate:protein:lipid, so children consumed protein more, but consumed lipid less compared with those of KDRIs. Vitamin A intake was 133% of recommended intakes (RI) and calcium intake which was identified as the nutrient most likely to be lacking in diets was 98.9% of RI. The intakes of all minerals and vitamins except folate were higher than KDRIs. 33.3% of children were distributed in insufficiency of energy intake, 42.7% of children were distributed in insufficiency of lipid intake. These results indicate that the need of developing of nutrition education program and further concern of a public health center, university and children care center about dietary life for preschool children.