• Journal of the Korean Society of Costume
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• v.18
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• pp.247-268
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• 1992

The Clothing expresses people's desire of beauty most directly of all cultural inheritances, and it teach us how the human culture has changed and developed. In this study researched the history of buttonholes which make the clothes more functional and beautiful. Buttons and Buttonholes is one of detailed elements they used as a fastener or as a decoration on clothing. Button have been used since ancient times, in early times long before buttons were used as fasteners they had significant decorative and symbolic value. In ancient times, clothes fastened with pins, brooches, fibular and ties. In medieval Europe, it was not until the 13th century that they used the button in functional use, and then Chong Ryung-Lk was introduced from orient, and they became popular as fasteners on clothing during the 13th century when fitted clothes replaced loose garments. Garments were laced together or fastened with buttons, until buttonholes were invented in the 13th century. But as early as the 14th century it appears that someone discovered that a loop slipped over a button, or button pushed through a slit in the cloth, would make a good clothes fastener. Many buttons made during the modern ages were convex medallions set in metal rims and decorated with partraits of famous men and women. During the modern ages, buttons, with ligh-ographed pictures, covered with celluloid of glass were popular. In the 19th century, the mass production by machine made people use the button easily, and many different material of button easily and many different material of button was made. With the begining of the 20th century. the development of plastics led to various and functional buttons. The type of buttonholes also became various, as bound buttonhole, Tailred buttonhole, Worked buttonhole, Loop buttonhole and so on. The button has many forms which were imitated by nature, or made geometrically and the appearance of the button from behind is classified by what has holes and what has holes and what has a shank, and I also classified the kinds of button by the quality of the material design and use. Like this, with the passing of the time buttons and buttonholes have changed in appearance with the change of clothes, and they have standed for something meaningful as well as fixed the opening and made clothes more beautiful.

• Magazine of the Korea Concrete Institute
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• v.7 no.1
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• pp.126-135
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• 1995

The strength development of PFA concretes were invest~gated in this study. The work undertaken was divided into two parts which considered both the influence of PFA replacement level up to 45% and the effect of cement type at the high PRA leveI(45%). The additiorlal cement considered included a rapdhardemng portland ccnlent. The full range of concrete struc tural grades were studied anti ciight cu~ing contlltiorls covering those 11:ied 111 practlce were examined. The early strength retluced wit11 increasing PFA content. However, post 28days, the reverse was observed. It was posslhle through the use of rapid hardening portland cement at the high PFA level to achieve similar early strength to OPC concrete, with the same benefits noted above also being obtained post 28 days. The compressive strength uf hlgh PYA content concrt:tes at hgh temperature m s found to be higher than the ccmtrol at all ages hoth in water and alr. The same trends were observed at low t.ernperature in air. However, the reverse occur-ed at the low temperature In water.

• Korean Journal of Veterinary Research
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• v.14 no.1
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• pp.1-7
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• 1974

Little work has been done on the changes in the blood picture occurring at different ages in cattle. In our country Kim (1963) and Jeong (1965) recorded the blood picture of mature Korean native cattle and, recently, Mun et al. (1974) has recorded the blood picture of Holstein cows. And a comprehensive survey of the blood picture of Korean native cattle has not been made. The object of the present investigation was to make good this deficiency, and to suggest standards for the blood picture of Korean native cattle at frequent intervals from birth to maturity. The cattle were kept under average farming conditions in this country. Observations were made at the following ages: at birth; 1, 2 and 4 days; 1, 2 and 4 weeks; 2,4,6 and 9 months; 1, 2 and 3 years of age. Blood samples were drawn from the jugular vein. Erythrocyte enumerations, concentration of hemoglobin in blood and hematocrit values were made in usual manner. Erythrocyte counts increased from $8{\times}10^6/mm^3$ during the first week to a level of $10{\times}10^6/mm^3$ at 2 months of age, showing steady state untill 6 months of age; it then fell to adult level ($8{\times}10^6/mm^3$) at 9 months of age. Concentration of hemoglobin in blood and hematocrit values were closely related to the changes of erythrocyte counts. The values increased from 10 g/100 ml and 31~35 ml/100 ml during the early life to 11 g/100 ml and 38 ml/100 ml at 2 months of age, showing steady state untill 6 months of age; these then fell to adult level (10 g/100 ml and 31~34 ml/100 ml) at 9 months of age for concentration of hemoglobin in blood and hematocrit values, respectively. Mean corpuscular volume and mean corpuscular hemoglobin showed a common pattern. The values were $42{\sim}43{\mu}m^3$ and 12.4 pg during the early life and fell a little to 6~9 months of age; these then increased to reach adult levels of $43{\mu}m^3$ and 12.6 pg for mean corpuscular volume and mean corpuscular hemoglobin, respectively. Mean corpuscular hemoglobin concentration was little affected with age.

• Journal of the Korean Society of Clothing and Textiles
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• v.27 no.1
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• pp.18-28
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• 2003

The purpose of this study is to provide total data of real body-type and self-evaluation about it. The subjects were 614 middle-aged women between 35 and 59 years old. Data were collected through measurement and a questionnaire survey on self-evaluation. The results of self-evaluation of body are as follows; 1. As the result of the recognition degree analysis, people consider themselves thicker, shorter or smaller than what they really we, regardless of ages and types. In addition, the women of younger group rather than the women of older group consider themselves bigger/thicker and shorter than what they really are. They think that the items of waist girth, abdominal girth, hip girth, upper arm girth. and thigh girth are thicker than the other items, however, among girth items the size of bust girth is smaller than the other items. The women of the late middle-aged group consider their somatotype thicker/bigger and shorter than the women of the early middle-aged group do. 2. As the result of body cathexis for each part, women in general rum out themselves not to be satisfied with their body parts, regardless of ages and types. Particularly, they are not satisfied with abdominal girth, weight, hip girth. According to the age bracket, the women in the older group are more satisfied than the women of younger group in terms of their body. According to somatotype, women in tall and slim groups are more satisfied with their body. The women of the early middle-aged group turn out not to be satisfied with girth items while the women of the late middle-aged group are not satisfied with length items.

• Human Ecology Research
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• v.53 no.5
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• pp.531-542
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• 2015

This study examined the structural relationships among 4- and 5-year-old children's playfulness, communication skills, and creative characteristics. This research analyzed the direct and indirect influence of child's playfulness on communication skills and creative characteristics. The study subjects were 249 children who attend kindergartens located in the Seoul and Gyeonggi-do area. A survey questionnaire was distributed to the children's mothers and teachers. The sample was analyzed using SPSS 21.0 and AMOS 21.0 program. The parameters were estimated by maximum likelihood method. The significance of indirect effect was tested by bootstrapping at .05 level. The results of this study were: (1) in both ages 4 and 5, playfulness had a direct and positive influence on communication skills, (2) in both ages, communication skills had a direct and positive effect on creative characteristics, and (3) the 5-year-old children's playfulness had a direct effect on creative characteristics, the 4-year-old children's playfulness did not exert direct influence onto creative characteristics. Communication skills 5-year-old children were seen to precipitate a partial mediation effect between playfulness and creative characteristics. At age 4, communication skills played a full mediation variable role between playfulness and creative characteristics. Discussions include suggestions to prosper creative characteristics through enhancing a child's playfulness and communication skills.

• Economic and Environmental Geology
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• v.31 no.2
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• pp.149-158
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• 1998

Volcanic rocks including rhyolitic tuff, rhyolite and welded tuff in the Bupyeong silver mine area form a topographic circular structure known as a resurgent caldera. Granitic rocks are emplaced inside and outside area of the circular structure. K-Ar dating and Nd-Sr isotope studies were carried out to invesitigate the origin and petrogenetic evolution of the rhyolitic and granitic magma in the Bupeong silver mine area. Whole rock K-Ar age ranges from 208 to 131 Ma for rhyolitic rocks. Radiometric ages for the granitic rocks are 167.6 Ma for pink feldspar biotite granite from inside granitic pluton of the circular volcanic body, 178.8 Ma for the Kimpo hornblende biotite granite and 111.8 Ma for the Songdo foliated granite from outside granitic plutons of the volcanic body. The radiometric age data indicates that the volcanic activities which are partly overlapped by granite plutonic activities in the Bupyeong mine area had recorded early Jurassic and early Cretaceous in age. Initial Sr and Nd isotopic ratios of the rhyolitic rocks ($^{87}Sr/^{86}Sr$=0.710~0.719 and $^{143}Nd/^{144}Nd$=0.5115~0.5118) are similar to those of granitic rocks ($^{87}Sr/^{86}Sr$=0.709~0.716 and $^{143}Nd/^{144}Nd$=0.5115~0.5116) from inside granite stock. This means that similar source materials of felsic magma responsibles for the Bupyeong volcanic rocks and inside plutonic rocks. Based on the Nd and Sr isotopic compositions, rhyolitic and granitic magmas in the Bupyeong area originated from the partial melting of the old continental crust which has Nd model age ranging from 1500 to 2900 Ma. This is analogous to those of the other Jurassic granitoids in South Korea.

• Journal of The Geomorphological Association of Korea
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• v.20 no.4
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• pp.147-163
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• 2013

Gonggeomji, located at the outlet of intermontane basin in the upper reaches of Dong River, is known as being constructed in the late Unified Silla Dynasty. Extensive wetlands were developed before the construction of embankment at Gonggeomji and very compact silty layers were deposited during dry seasons. Paniceae was cultivated on a dry field in the basin during the early Bronze and Iron Ages. Although it is supposed that agricultural activities on a paddy and dry field prevailed during the Three Kingdoms Age, the indicating layer was not found. As the construction of the embankment, Oryza sativa as well as Paniceae were cultivated in the basin at the same time. The climates during the early Bronze are cool and Iron Ages are estimated to be generally warm. From the late Unified Silla Dynasty and middle Goryeo Dynasty when the embankment was constructed, it was still warm, and then, shows alterations between cool and warm conditions. Since the late Goryeo Dynasty, it gradually became cool.

• The Journal of Korean Academic Society of Nursing Education
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• v.28 no.1
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• pp.91-100
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• 2022

Purpose: This study aimed to identify the longitudinal effects of children's temperament on maternal depression. Methods: Data from a longitudinal cohort of the Panel Study of Korean Children (PSKC) from 2010 to 2012 were analyzed using hierarchical linear modeling. The survey included 1,721 mother-child dyads. The mothers reported on their children's temperament and on maternal depression. The children's temperament was measured by the Emotionality, Activity and Sociability-Temperament Survey for Children-Parental Ratings, while maternal depression was measured by the Kessler 6 Psychological Distress Scale. Results: The results showed that both children's temperament and maternal depression were relatively stable when the children were between the ages of 2 to 4. The mean maternal depression scores were 11.83 in 2010, 11.88 in 2011, and 11.75 in 2012. There were significant negative correlations between the maternal depression scores and children's ages, and sociability and activity subdomain scores ranged from r=-.05 to -.11 (p<.05). There was a significant positive correlation between children's emotionality subdomain scores and maternal depression scores (r=.35, p<.001). Children's temperament rament (emotionality: β=0.26, activity: β=-0.07, and sociability: β=-0.03) were significant factors in maternal depression. Conclusion: These findings indicate the need for the early assessment of and intervention for children's temperament and maternal depression. The results of this study will provide basic data for the development of nursing education programs related to early assessment and intervention to improve the health and quality of life of young children and mothers.

• Journal of Gastric Cancer
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• v.12 no.4
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• pp.232-236
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• 2012

Purpose: With an increase in life expectancy, more elderly patients are presenting with gastric cancer. As a result it is yet be resolved whether laparoscopy assisted distal gastrectomy is a suitable treatment for elderly patients with early gastric cancer. This study retrospectively compared surgical outcomes of laparoscopy assisted distal gastrectomy between elderly and nonelderly patients with gastric cancer. Materials and Methods: The study group was comprised of 316 patients who underwent laparoscopy assisted distal gastrectomy between April 2005 and December 2010. Of these patients, 93 patients whose ages were 65 years or more were compared with 223 patients who were younger. Results: There were no differences in the short term outcome or minor complication rate between the elderly patients and the nonelderly patients. The hospital stay was significantly longer and the major complication rate was significantly higher for the elderly patients compared with nonelderly patients. Conclusions: Laparoscopy assisted distal gastrectomy for early gastric cancer in the elderly patients had comparable operation time and blood loss with the nonelderly group. However, the safety and advantage of laparoscopy assisted distal gastrectomy in the elderly patients need to be further studied in higher volume trials.

• Journal of the Korea institute for structural maintenance and inspection
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• v.9 no.4
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• pp.141-148
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• 2005

The nonlinear humidity distribution occurs due to the moisture diffusion when a concrete is exposed to an ambient air. This nonlinear humidity distribution induces shrinkage cracks on surfaces of the concrete. Because shrinkage cracks largely affect the durability and serviceability of concrete structures, the moisture diffusion in concrete must be investigated. The purpose of this paper is to propose a model of the moisture diffusion coefficient that governs moisture diffusion within concrete structures. To propose the model, numerical analysis was performed with several experiments. Because the moisture diffusion coefficient is changed with aging, especially at early ages, the proposed model includes aging effect by terms of the porosity as well as the humidity of concrete.