• Journal of Conservation Science
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• v.30 no.3
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• pp.249-261
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• 2014

This study aims to examine production technique of white wares from the Guyre-2ri 1st and 2nd kiln sites, Wonju, Gangwon Province and characteristics of the used materials, and to find a correlation among materials of the excavated white wares. X-ray fluorescence sequential spectroscopy(XRF), X-ray diffraction(XRD), Dilatometer and Inductively coupled plasma mass spectrometry(ICP-MS), Inductively coupled plasma automic emission spectrometer(ICP-AES) were applied to determine the chemical composition, crystalline phase of samples, firing temperatures, trace elements and rare earth elements. White wares from the Guyre-2ri kiln sites contained high contents of coloring oxides and fluxes. Though firing temperature of each sample was different, they were mostly fired at a temperature below $1200^{\circ}C$ and some of them experienced a low temperature of $1000^{\circ}C{\pm}20^{\circ}C$ and a high temperature above $1200^{\circ}C$. When analyzing body crystalline phases of the white wares using the XRD method, quartz and mullite were extracted from all the samples, and the proportions were similar to each other. When analyzing the excavated white wares using the Seger formula, also, all the samples showed similar clay sources and production techniques. Moreover, the white wares were made of host rocks of the same geological origin, according to the result of rare earth elements analysis.

• Journal of Conservation Science
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• v.32 no.4
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• pp.549-560
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• 2016

The purpose of this study is to identify the material characteristics of blackwares excavated from the Bonggok kiln site in Jinan-gun, Jeollabuk-do Province, South Korea, by scientific analyses and a reproduction experiment. Scientific analyses were conducted to determine the physical properties, chemical composition and for microscopic observation of blackwares. A reproduction experiment was also conducted by producing ceramic samples with black glaze, red ocher and limestone, and then cross sections of the samples were observed. The analysis results showed that all the excavated blackwares have similar properties such as chromaticity, specific gravity, absorption factor and porosity, but there is a difference depending on the crystallization of the ceramics. Thermal analysis showed that the exothermic peak was observed at about $1200^{\circ}C$, and crystal structure analysis indicated the presence of mullite. Hence, it can be concluded that the firing temperature of the excavated blackwares was around $1100-1200^{\circ}C$. Moreover, the glaze present on these blackwares has about 22% higher $Fe_2O_3$ content than those excavated from other places; however, the former has lower CaO content. For the reproduction experiment, samples were made using limestone as a flux and red ocher as a glaze. The results show that the cross section of the glaze layer of the reproduced sample have iron crystals with dendritic structures, similar to those present in the excavated black-wares. It is assumed that such iron crystals were formed during the process of melting and solidification of the iron oxide present in the blackwares.

• Journal of Conservation Science
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• v.34 no.2
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• pp.107-118
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• 2018

This report does studied for making the method of conserving bracket murals in Daeungjeon of Jikjisa Temple, through the scientific way. Results of evaluated the conservation status at the braket mural paintings, most serious damage is structural damage like cracks, breakage, and delamination. After optical investigation, a characteristic point wasn't found such as underdrawing or traces of a coat of paint. The ultrasonic examination speed by each wall painting was measured from about 195.8 m/s to 392.7 m/s, according to the location of the surface, and it was able to compare the surface properties according to the location. In Infrared-thermal image measurement shows that wall layer separation and paint layer delamination are closely detected, therefore it was able to judge of damage on the objective way. Material analysis revealed that the walls were made by sand and weathering soil. The wall layer combined sand with less than fine sand size by nearly 5:5, and the finishing layer was found to have mixed medium sand and fine sand at approximately 6:4 rates. However, In case of finishing layer, mixing ratios of sizes less than very fine sand were found to be significantly lower than wall. Therefore, it is estimated that the plysical damage such as the separation between the layers of the walls created in the braket mural paintings, is continuously caused by changes in the internal stresses and volume ratio caused by the density differences between the wall and the finishing layers.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.5 no.1
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• pp.54-69
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• 1994

The purpose of present study was to develop the Korean Version of Luria-Nebraska Neuropsychological Battery for Children(LNNB-C), to examine the reliability of it, and to establish the norms for determining the probability of brain damage. The normative group used to standardize the Korean version of LNNB-C was composed of 147 children between the age of 8 and 12(body 74, girl 73). The clinical group consisted of 19 brain damaged, 16 ADHD, and 16 psychiatric controls. The inter-scorer reliability was 96.3%, indicating that the stability of the scoring system for the Korean version of LNNB-C is good. The reliability coefficients(Cronbach's ${\alpha}$) of LNNB-C scales were ranged .51 to .91, which are similar to those of original LNNB-C. To establish the norms for detecting brain damage, the means and standard deviations for normative group were used to calculate T-scores for each scale. To determine a critical level that could successfully predict a normal child's average score at a given age, first the average score of normative group was calculated, and this score was then entered a regression equation with age to predict the average(baseline) acore. Finally, some issues on constructing the Korean version of LNNB-C and the cultural differences between Korean and American children in performing LNNB-C were discussed.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.349-358
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• 2016

The purposes of the study are to examine the relationship amongst adolescents' internet usage, fandom activities, sense of community and their mental health in the digital era and to probe into the effect of internet usage, fandom activities, sense of community on adolescents' mental health. The results are as follows: First, there were statistically significant correlations among those four factors. Secondly, it shows that the effect of internet usage, fandom activities and sense of community on the adolescents' mental health have a difference by gender. In the case of female adolescents, there is no effect of internet usage on their mental health. But, the study reveals that adolescents' internet usage and fandom activities which now are accepted as a part of their culture, could be combined with the sense of community and could have an effect on the adolescents' mental health. Furthermore, the study casts a light on the possibility to build a strong point on adolescents' activities, education, counseling and policy making for the purpose to enhance adolescents' mental health in the future.

• Clinical and Experimental Reproductive Medicine
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• v.26 no.2
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• pp.203-211
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• 1999

목적: 일산화질소 (nitric oxide; NO)는 생식계를 비롯한 여러 생체내 기관에서 다양하고도 중요한 작용을 하는 것으로 알려져 있으며, 복강액은 난관내강과 연결되어 복강액 내의 세포 성분의 변화는 난관의 미세환경을 변화시켜 수정과 초기 배아 발생에 영향을 줄 수 있다. 본 연구는 배아 발생에 있어서 일산화질소의 역할을 이해하고 복강액 내의 NO농도 변화가 배아 발생에 미치는 역할을 조사하기 위해 수행되었다. 방법: 과배란시킨 1세대 잡종 암컷 생쥐 (C57BL${\times}$CBA/Ca)로부터 1세포기 배아를 얻어 10% synthetic serum substitute가 첨가된 modified human tubal fluid 배양액에서 4일 동안 체외배양하였다(대조군). 실험을 위해 이러한 배양조건에 sodium nitroprusside (SNP)를 $0{\sim}1mM$의 다양한 농도로 배양초기부터 첨가하거나, $200{\mu}M$ SNP를 2-, 4-, 8-세포기의 각기 다른 배아시기에 첨가하였으며, 복강경수술을 받는 42명의 여성으로부터 채취한 복강액을 SSS대신 단백질원으로 사용하여 포배아까지의 배아 발달율을 관찰하였으며, 복강액 내의 NO농도를 Griess방법에 의해 측정하였다. 배아의 apoptotic body는 H33342 염색법으로 조사하였으며 배아 발달율은 3회 이상 반복 실험한 결과의 mean${\pm}$SEM으로 나타내었다. 결과: SNP는 농도에 의존적으로 배발생을 억제하였으나 배아 단계에 대한 특이성은 관찰할 수 없었으며, 특히 $100{\mu}M$ 이상의 고농도의 SNP는 2-세포기 단계에서 배아 발생을 정지시켰다. 또한 단백질원으로 복강액 이용시 배 발생율은 복강액 내의 NO 농도에 따라 현저한 차이가 발견되었으며, $2.5{\mu}M$이상의 NO를 함유한 복강액에서 배양한 배아의 발생율은 현저하게 감소하였다. cGMP analogue인 8-bromo-cGMP를 배양액에 첨가시 배아 발생에는 변화가 없었으며, SNP에 의해 배발생이 정지된 2-세포기 배아에서 apoptotic body를 발견할 수 없었다. 결론: 이상의 결과로 보아 NO는 고농도에서 배아 발생을 저해하며, 복강액 내의 NO와 같은 성분의 변화는 배아 발생에 유해한 효과를 유발할 것으로 사료된다. 이러한 NO의 배아 발생 억제효과는 cGMP로 중재되는 경로나 apoptosis유발과는 관계가 없는 것 같다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.25 no.4
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• pp.313-332
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• 2014

With the increased creation, distribution, and use of image in context of the development of digital technologies and internet, research endeavors have accumulated drastically. As two dominant aspects of image retrieval have been considered content-based and concept-based image retrieval, concept-based image retrieval has been focused in the field of Library and Information Science. This study aims to systematically review the accumulated research of image retrieval from the perspective of LIS field. In order to achieve the purpose of this study, two data sets were prepared: a total of 282 image retrieval research papers from Web of Science, and a total of 35 image retrieval research from DBpia in Kore for comparison. For data analysis, systematic review methodology was utilized with bibliographic analysis of individual research papers in the data sets. The findings of this study demonstrated that two sub-areas, image indexing and description and image needs and image behavior, were dominant. Among these sub-areas, the results indicated that there were emerging areas such as collective indexing, image retrieval in terms of multi-language and multi-culture environments, and affective indexing and use. For the user-centered image retrieval research, college and graduate students were found prominent user groups for research while specific user groups such as medical/health related users, artists, and museum users were found considerably. With the comparison with the distribution of sub-areas of image retrieval research in Korea, considerable similarities were found. The findings of this study expect to guide research directions and agenda for future.

• Culinary science and hospitality research
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• v.15 no.1
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• pp.137-148
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• 2009

This research aims at supplying the basic data for getting the opportunity to understand and take interest in native local foods, seeking the plans for the succession, development and popularization of such foods. It also presents the efficient development direction of native local foods by researching the attitude to native local foods and their importance among the university students living in Busan and Gyeongnam areas. As the results of conducting a cross analysis on the basis of the characters of sex, age, department, and residence periods of demographic characters to survey university students' attitude to native local foods, 38.5% of the respondents said that they have experience of having been interested in them. And the media were the most influential medium to make them get interested in native local foods, and special restaurants for native local foods were most frequently visited to have them. As for the succession and development of native local foods, public relations was the most important factor for promoting them. For the popularization of native local foods, various cultural events and public relations were most needed. As the results of analyzing the importance of native local foods by the demographic characters, there were statistically significant differences according to sex, age, residence period in Busan and Gyeongnam areas.

• Korean Journal of Social Welfare
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• v.61 no.2
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• pp.215-246
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• 2009

This study examined the perceptions of and attitude towards mixed-race and investigated the factors affecting them and their influence on discriminative behavior. For the study, a survey was conducted with residents residing in Seoul and its suburb. The results showed that the perceptions of and attitudes towards mixed-race, generally, were not so negative and positive in all three types of mixed-race, Caucasian-korean, Asian-korean, and African-korean. In addition, the perceptions of and attitudes toward mixed-race were partly different by the type of mixed race. That is, there were more positive perceptions of and more favorable attitudes towards the Caucasian-korean in Asian-korean and African-korean, and there were less positive perceptions of and less favorable attitudes towards Asian-korean than in African-korean. With regard to the factors affecting the perceptions and attitudes, racism was a factor affecting commonly the perception of and attitudes towards all types of mixed-race. The attitudes towards mixed-race had an influence on the discriminative behavior in all types of mixed-race, and, only in the African-korean, the perception of mixed race affected the discriminative behavior. These results suggest insights for what efforts should be made to improve mixed-race's welfare.

• Korean Journal of Biological Psychiatry
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• v.3 no.1
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• pp.96-101
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• 1996

Objects : There has been the controversy that menopause may or may not influence the psychological distresses. The purpose of this study was to investigate the correlation between the hormonal status and traits of depression & anxiety in menopausal women. Method : Among the women attending menopausal clinic. menopausal women, defined as who having a amenorrhea for more than 12 months, were selected as a study group(n=83). The control group(n=73), who visited to screen the cervix cancer with regular menstruation, hod no history of hormone replacement therapy. Individual data were collected by self-reporting questionnaires. Depression state was evaluated by Beck Depression Inventory(BDI) and anxiety state by Stale Trail Anxiety Inventory(STAI), and the female hormones such as E2, FSH, and LH were obtained by blood sampling at visting clinic. Statistically the data were processed by t-test and pearson correlation analysis(p<0.05). Results : 1) The mean age of menopausal was 45.3 years. 2) In menopausal women the scores of BDI & STAI were significantly higher than in control group(p<0.05). 3) There were significant differences between menopausal and control group by E2 & FSH. 4) There was no correlation between female hormonal status and the STAI & BDI scores in both groups. Conclusion : Although menopausal women had more traits of depression & anxiety than control group, it was difficult to insist that the lack of estrogen was the only etiological factor for the traits of depression & anxiety in menopausal period. In further studies, we must consider another factors, including biological, sociocultural, psychological factor, as the cause of psychological symptoms during menopausal period.