• Child Health Nursing Research
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• v.6 no.1
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• pp.18-31
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• 2000

Recently, the number of obese people have been increasing due to westernized diets and increased sedentary activity. In particular, obese adolescent have been newly recognized as having significant health problems. This study focuses on determining the gender difference of obese adolescents through implementation of a structured questionnaire on general characteristics, attitudes toward dieting, eating habits and emotional depression due to obesity. Data collection was carried out by 291 students in attendance at 3 high schools in Pusan from 11. 2. 1998 to 11. 30. 1998. The targets were 148 boys and 143 girls who were judged as obese in the school's physical check-up. The test of reliability of this research was calculated by chronbach's α. Data analysis was managed by computer and statistics by SPSS/WIN. The results of the survey are as follows: 1. For the questionnaire regarding attitudes toward dieting which include 28 items, 10 out of 28 items (about 36%)showed gender difference. 2. For the questionnaire regarding eating habits which include 17 items, 5 out of 17 items (about 30%)showed gender difference. 3.For the questionnaire regarding emotional depression about obesity, 30.6% of boys and 27.3% girls answered but no statistical significance. The results of this survey indicated that this study will be important as a good guideline for treating obese adolescents. It is hoped that much more research on gender difference in obese adolescents will be implemented in the future. In addition, the development of effective treatments for obesity should be based on the gender of the adolescent.

• Korean Journal of Human Ecology
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• v.4 no.1
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• pp.105-111
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• 1995

This study was to investigate the trends of dietary life as based on the assumption that economic growth caused the change in dietary life. Newspaper articles on home cooking in Cho-Sun Daily Newspaper, published from 1961 to 1993, were analyzed, and the results are summerized as follows: (1) Total number of articles on home cooking was 817. Traditional Korean foods had been introduced more often than foreign foods, particularily after the third period($'79{\sim}'93$). In the first period($'61{\sim}'67$ serving size of 5 had been adapted mainly, whereas serving size of 4 had been adapted more frequently after third period. (2) Vegetable foods were the most frequently introduced item in home cooking articles as a whole. In the third and forth periods starch foods had been reduced, whereas vegetable and meat foods had been increased in home cooking articles. Use of foods of the season had been reduced thanks to spreading of greenhouse and to improvement of food storage technology. (3) Traditional Korean foods were largely composed of kimchi, boiled rice, Korean style soup and stew which are basic foods in Korea. Foreign foods introduced were mainly beverage, alcoholic drink and salad. Since 1980 meat, chicken and vegetable dishes had been frequently introduced. In conclusion, the daily newspaper articles on home cooking reflect the changes in Koreans' food consumption pattern and consciousness of dietary life.

• Journal of the Korean earth science society
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• v.36 no.2
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• pp.181-189
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• 2015

A large number of fossil conchostraca used in this study were collected from the Amisan Formation distributed in the western part of Chungnam, Korea. These fossils were densely discovered in several horizons of the Amisan Formation, and might have flourished in the fresh water environment of subtropical climate. The fossil conchostraca from the Amisan Formation were classified into four species belonging to three genera as follows: Euestheria kawasakii, E. shimamurai, Sphaerestheria koreanica, and Cyclestherioides rampoensis. Out of four species, the last species was previously described from the Amisan Formation, and the other three species were newly found. Based on the fossil conchostraca, it is inferred that the geological age of the Amisan Formation falls under the Late Triassic Period.

• Journal of the Korean School Mathematics Society
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• v.11 no.2
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• pp.249-283
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• 2008

The purpose of the study was to investigate the definitions and concept images of Infinity and limits for high school students. In addition, the error patterns of the students were also investigated. The participants were 121 girls highschool students and survey method was used to co11ed data. Only 11 % and 5% of the participants revealed the definitions similar to the standard textbook definitions in limits of infinite sequences and infinite series respectively. The participants showed 6 types of error patterns and had more difficulties in understanding and applying concepts and properties of infinite series than those of infinite sequences.

• Journal of Korean Home Economics Education Association
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• v.10 no.2
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• pp.1-11
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• 1998

The purpose of this study is to analyze highschool girls' concerns about environmental problems after investigating the actual state of environmental education and to suggest some fundamental changes in the Home Economics classes to improve environmental education. The sample was selected form high school girl students in Kyounggi Province between September 16 and September 26, 1996. Eight hundred twenty (820) first and second grade respondents were used. The data were analyzed by frequency, mean, percentile, factor analysis. Duncan's Multiple Range Test, and Stepwise Multiple Regression. Based on the major findings, the most influential variable was parental attitudes towards environmental conservation and problem. Next in influence was the environmental education provided in Home Economics classes. Also important were the individual student's interest in Home Economics classes, and her belief in the utility of environmental conservation in everyday life. The research conclusions are as follows: 1. We'll find how to relate efficiently the environmental education with everyday life by analyzing thoroughly the text of home economics. 2. We'll develop how to educate students parents properly because parental attitudes to wards the environmental problem have a great effect on students' behaviors. 3. We'll ceinforce environmental education by developing problems, and to motivate them to take real action in the area of environmental conservation.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.7
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• pp.1119-1127
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• 2007

Nonwovens have been widely used in various regions from the households to the industrial, agricultural and medical goods. Synthetic fibers have been used for source of nonwovens commonly because of their useful and economic properties. They are not only main factor causing environmental problems but also spend huge cost to renew the environmental disruption by them. Nonwovens must have both cost-competitiveness and environment-friendly property to be the desirable sources in 21th centuries. For meet these needs, it is suitable for the times that economical and environmentally-safe kenaf fibers would be used as raw materials of nonwovens. Kenaf and polyester fibers were blended in 4 types of ratio : 0/100, 20/80, 40/60, 60/40 were needle-punched. The nonwovens properties such as color values, surface appearance, strength, elongations, stiffness, moisture regain, water and oil absorbency, and electrification were tested. As the results, tensile and tear strengths, water and oil absorbency were maximum at 20/80 kenaf/polyester blend nonwoven, because of effecting by nonwoven structure and fiber properties. The moisture regain were increased according to kenaf were blended and the eletrification reduced in proportion to the kenaf fibers by chemical property of fiber composed nonwovens.

• Journal of the Korean Society of Clothing and Textiles
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• v.32 no.4
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• pp.598-607
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• 2008

Bast fibers were applied for various usages from fabrics to household care products long time ago. In this study, we investigated the physical characteristrus of water retted & chemically rotted fibers of Yucca, New Zealand hemp, Corn, Kuzu vine, Indian mallow, and Mulberry paper that have been harvested by domestic cultivation. Water retting is more effective than chemical rotting for six kinds of plant fibers. When all fibers were rotted chemically with 1% sodium hydroxide, only Kuzu vine and Indian mallow were retted. Indian mallow, Yucca, New Zealand hemp, and Com fibers have higher tensile strength than any other fibers. The crystallinity of Kuzu vine, Indian mallow, Yucca, New Zealand hemp, and Corn was as low as 60% but Yucca, New Zealand hemp were flexible. Yucca had fewer lumina whereas New Zealand hemp more lumina in cross sectional shape. Especially com fibers have a structure like sponge, and Indian mallow had a net shape. The longitudinal section of New Zealand hemp showed smooth and long shape. Mulberry paper was proved to be short and thin, which is quite appropriate for making paper. In this study, we found that plant fibers for living material could be used for cloth materials.

• Journal of the Korean Home Economics Association
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• v.43 no.2
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• pp.115-126
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• 2005

Environmentally and human compatible chitosan were pretreated on cotton fabrics which were then dyed with 100% persimmon juice. The chitosan concentration was 1% and the chitosan types were high molecular weight chitosan (1980cps), low molecular weight chitosan (18첸), chitosan oligomer and water soluble chitosan. The properties of the fabric surfaces, the dyeabilities, the color fastnesses, the antibacterial activities, the strengths, the elongations and the drape stiffnesses were evaluated. The properties of the chitosanpretreated, persimmon juice-dyed cotton fabrics (CLP) were compared to those of the untreated (CN), chitosan treated (CL) and persimmon juice-dyed fabrics (CP). The results were as follows. The fibers extruded from the surface of CN decreased on CP. The air between the fibers within CN were substituted by chitosan solution or persimmon juiceand decreased within CLP according to SEM observations. The effects of chitosan treatment, the chitosan molecular weights and the degrees of deacetylation of chitosan on the dyeabilities of the persimmon juice-dyed cotton fabric were not distinct. The curing after chitosan padding improved the dyeabilities of CLP compare to noncuring. The strengths of CP decreased and those of CL increased, compared to those of CN. The strengths of CLP were greater than those of CP. The elogations of CP and CL were greater than those of CN. The strengths and elongations of CLP were greater than those of CN. The chitosan treatments improved the strengths but not the elongations. The drape stiffnesses of CL, CP and CLP were greater than those of CN. The antibacterial activites of chitosan pretreated, persimmon juice-dyed cotton fabrics against Staphylococcus aureus were increased by more than 98% by persimmon juice.

• Journal of Engineering Education Research
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• v.14 no.1
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• pp.11-19
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• 2011

The purpose of this study is to reinforce the relationship of high-school, university and industries. In order to achieve the object of this study, we sampled and specified the core competencies. We investigated, analyzed the cognition of high school teacher to the current curriculum of high school related to the core competencies and the cognition of industries to the current curriculum of university related to the core competencies. For the study, the literature researches was conducted about the need to university education of industry, various curriculum of high-school and university. 15 items of the core competencies were sampled. The survey was conducted, based on 15 items of the core competencies.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.11 s.158
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• pp.1581-1588
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• 2006

The effects of removal of lignin or hemicellulose on the cottonizing and pulping characteristics of kenaf fiber were studied by comparing the conditions of non-cellulosic material contents, fiber lengths and dyeability. And the effects of lignin or hemicellulose on dyeability of the kenaf fiber using CI Direct Green 26 and CI Direct Red 81 were investigated. The results were as follows. The lignin contents decreased and the kenaf fiber became shorter and finer as the reaction time with sodium chlorite increased. The hemicellulose could be removed by treating sodium hydroxide solution to the fiber from which the lignin partly removed. The 80% of hemicellulose could be removed by 5% of sodium hydroxide solution in 5 minutes. But if lignin were not removed at all, hemicellulose could not be removed. The fiber lengths proper for apparel were obtained after treating sodium chlorite for 10-20 minutes and those for pulping were obtained after treating sodium chlorite for 40 minutes. The kenaf fibers from which lignin and hemicellulose partly removed were dyed with CI Direct Green 26 and CI Direct Red 81. Their dyeability increased as the removal rates of lignin increased. The ${\Delta}E$ values of kenaf fiber dyed with CI Direct Green 26 were lower than CI Direct Red 81.