• 한국초전도학회:학술대회논문집
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• v.9
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• pp.388-391
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• 1999

Well oriented Bi2212 superconductor thick films were formed successfully on a copper substrate by liquid reaction between a Cu-free precursor and Cu tape method in which Cu-free BSCO powder mixture was' printed on copper plate and heat-treated. And we examined the effect of heat-treatment atmosphere for the superconducting properties and microstructure of Bi2212. The composition of Cu-free BSCO powder mixture was Bi$_2O_3$ : SrCO$_3$ : CaCO$_3$ = 1.2~2 : 1 : 1 and the heat-treatment for the superconducting formation reaction was performed in air, oxygen, nitrogen and low oxygen pressure. At heat-treatment temperature, the printing layer partially melt by reacting with CuO of the oxidizing copper plate, and the nonsuperconducting phases present in the melt are typically Bi-free phases and Cu-free phases. Among the nonsuperconducting phases, it is known that the (Sr,Ca)CuO$_3$ phase restrain the formation of the Bi2212 superconducting phase. Because a kind of the nonsuperconducting phases is controled by the oxygen partial pressure, the optimum condition in which the remnants of the second phases don't leave in the fully processed conductor was determined by XRD and the critical tempera to re (Tc) analysis.

• Journal of Korean Society of Steel Construction
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• v.20 no.2
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• pp.289-301
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• 2008

Double skin composite (DSC) wall is a structural wall that is filed with concrete between two steel plate skins connected by tie bars. This type of wall was developed to enhance the structural performance of wall, to reduce wall thickness, and to enhance constructibility, eliminating the use of formwork and re-bars. In this study, cyclic tests were performed to investigate the inelastic behavior and earthquake resistance of isolated and coupled DSC walls with rectangular and T-shapedcross-sections. The DSC walls showed stable cyclic behaviors, exhibiting excellent energy dissipation capacity. The te st specimens failed by the tensile fracture of welded joints at the wall base and coupling beam and by the severe local buckling of the steel plate. The deformation capacity of the walls varied with the connection details at the wall base and their cross-sectional shapes. The specimens with well-detailed connections at the wall base showed relatively god deformation capacity ranging from 2.0% to 3.7% drift ratio. The load-carrying capacities of the isolated and coupled wall specimens were evaluated considering their inelastic behavior. The results were compared with the test results.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.314-327
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• 2014

This is a quasi-experimental study involving one group design with pretest and posttest for evaluation of an effectiveness of an emergent care management simulation education among senior nursing students according to their learning styles. Participants were 58 senior nursing students. Learning style and educational effectiveness (critical thinking disposition, problem solving process, cooperation, satisfaction with learning, and self-confidence) were measured. Learning styles of senior nursing students were converger 46.6%, assimilator 34.5%, accommodator 15.5%, and diverger 3.4%. Critical thinking disposition, problem solving process, cooperation, and self-confidence were significantly enhanced by an emergent care management simulation education. Otherwise, educational effectiveness according to learning styles were not significantly different. Based on the results, devising stratagem to maximize an educational effectiveness will be needed trough re-evaluation of relationship between learning styles and effectiveness of a simulation education.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.125-139
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• 2014

In this study, we're going to look at the formation process of Youth film Festival and factors affecting that process. The Youth film Festival didn't appear suddenly in a day. There have been various trial regarding media education by civil society organizations (NGO) until the mid 1990s, principal Youth film Festival has been held from 1997s to 2001s and established a framework for Youth film Festival. There were some progress after those times and then in 2008 Youth film Festival faced some changes such as screening online, and responded rapidly to the current image industry and the cultural stream like the appearance of HD camcoder and smart phone till now. We can divide two areas regarding factors that affecting those formation process of Youth film Festival. First, they are explained as economic and social factors that the situation of South Korea extremely such as the efforts of civil society organizations (NGO), image technology and development of the industry, IMF bailout era and so on, second cultural and educational factors that the rise of virtual culture, the University entrance and results of awards. Thus Youth film Festival has been evolved in various affects, so we can look into the various sections of korea society through these formation process of Youth film Festival.

• The Korea Journal of Herbology
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• v.30 no.4
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• pp.101-108
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• 2015

Objectives : Positive effects of Ginseng has great research attentions such as anticancer, anti-diabetic, antiaging, liver, immune function, CNS, etc. In this study, we investigated Hydroponic-cultured Ginseng Folium fermented byBacillus subtilisto establish fermentation conditions for enhancing functionality.Methods : Ginseng Folium were cultivated hydroponic-cultured and were extracted with methanol. We inoculateBacillus subtilisfor fermentation by adding to 0%, 3% and 5% sugar respectively and checked antioxidant activities, total phenolic content and total saponin content in 2 days intervals during 11 days. The antioxidant activities were studied by the 1,1-diphenyl-2-picryl hydrazyl(DPPH) radical, 2, 2'-Azino-bis(3-ethylbenzothiazoline-6 sulfonic acid) diammonium salt(ABTS) radical scavenging assay and Reducing power assay. We analyzed the Total phenol content, crude saponin content and ginsenoside content. Moreever, Hepatoprotective effects by Glutamic oxaloacetic transaminase(GOT) and Glutamic pyruvic transaminase(GPT) in Sprague-Dawley rat.Results : The results of DPPH and ABTS were 66.89% and 96.72%, respectively. The reducing power was resulted in optical density of 0.7312 with 3% sugar after 9 days of fermentation. and the concentration at 200 ㎍/㎖. Total phenol content was 36.92㎎/g with 3% sugar after 9 days of fermentation, in which crude saponin content wasn't changed, and ginsenoside content such as Rg3, Re and Rb was increased. Activities of GOT and GPT concentration were decreased in rat.Conclusions : This study suggests that hydroponic-cultured Ginseng Folium fermented byBacillus subtilisin 9 days showed significant efficacy of hepato-protection as well as antioxidant compared to the others. In addition, it shows not only improved value but also utilized hydroponic-cultured Ginseng Folium by fermentation.

• Journal of Environmental Science International
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• v.14 no.2
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• pp.157-165
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• 2005

This study was conducted to determine optimum design parameters in nitrification and denitrfication of chemical fertilizer wastewater using pilot plant, Jet Loop Reactor. The chemical fertilizer wastewater which contains low amounts of organic carbon and has a high nitrogen concentration requires a post-denitrfication system. Organic nitrogen is hydrolyzed above $86\%$, and the concentration of organic nitrogen was influent wastewater 126mg/L and of effluent wastewater 16.4mg/L, respectively. The nitrification above $90\%$ was acquired to TKN volumetric loading below $0.5\;kgTKN/m^3{\cdot}d$, TKN sludge loading below $0.1\;kgTKN/kgVSS{\cdot}d$ and SRT over 8days. The nitrification efficiency was $90\%$ or more and the maximum specific nitrification rate was $184.8\;mgTKN/L{\cdot}hr$. The denitrification rate was above $95\%$ and the concentration of $NO_3-N$ was below 20mg/L. This case was required to $3\;kgCH_3OH/kgNO_3-N$, and the effluent concentration of $NO_3^--N$ was below 20mg/L at $NO_3^--N$ volumetric loading below $0.7\;kgNO_3^--N/m^3{\cdot}d$ and v sludge loading below $0.12\;kgNO_3^-N/kgVSS{\cdot}d$. At this case, the maximum sludge production was $0.83\;kgTS/kgT-N_{re}$ and the specific denitrfication rate was $5.5\;mgNO_3-N/gVSS{\cdot}h$.

• The Journal of Advanced Prosthodontics
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• v.3 no.2
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• pp.90-95
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• 2011

PURPOSE. To compare the fracture resistance and the mode of failure of endodontically treated teeth restored with different post-core systems. MATERIALS AND METHODS. Root canal treatment was performed on 40 maxillary incisors and the samples were divided into four groups of 10 each. For three experimental groups post space preparation was done and teeth were restored with cast post-core (Group B), stainless steel post with composite core (Group C) and glass fiber post with composite core using adhesive resin cement (Group D). Control group (A) samples were selected with intact coronal structure. All the samples were prepared for ideal abutment preparation. All the samples were subjected to a load of 0.5 mm/min at $130^{circ}$.until fracture occurred using the universal testing machine. The fracture resistance was measured and the data were analyzed statistically. The fracture above the embedded resin was considered to be favorable and the fracture below the level was considered as unfavorable. The statistical analysis of fracture resistance between different groups was carried out with t-test. For the mode of failure the statistical analysis was carried out by Kruskal-Wallis test and Chi-Square test. RESULTS. For experimental group Vs control group the fracture resistance values showed significant differences (P<.05). For the mode of failure the chi-square value is 16.1610, which means highly significant (P=.0009) statistically. CONCLUSION. Endodontically treated teeth without post core system showed the least fracture resistance demonstrating the need to reinforce the tooth. Stainless steel post with composite core showed the highest fracture resistance among all the experimental groups. Teeth restored with the Glass fiber post showed the most favorable fractures making them more amenable to the re-treatment.

• Research in Community and Public Health Nursing
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• v.8 no.2
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• pp.289-303
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• 1997

This study analyzes the relations between perceived family characteristics, experienced abuse and mental health in childhood. For this, this study used row data by questionnaire, analysis, and frequency, ANOVA, t - Test, Pearson' correlation analysis. The sample was 118 children 10-12 years old in primary school. The findings are as follows. First, children perceived family cohesion and family adaptability highly, family adaptability showed a significant difference from the relations with a parent's job, a parent's academic level, and type of residence. Second, it appeared that some children experienced physical, emotional, and sexual abuse. Third, in general the mental health of children was good. Their mental health showed a significant relation to economic level of family, and type of residence, creating problems such as depression, anxiety, phobic anxiety, psychoticism. By family size, their mental health showed a significant relation to somatization, interpersonal sensitivity, depression, hostility, phobic anxiety, paranoid ideation, and psychoticism, Fourth, family cohesion and mental health perceived by children supported a linear relation to phobic anxiety, and family adaptability and mental health perceived by children supported the reverse -linear relation to somatization, anxiety, paranoid ideation, etc. Fifth, connections with perceived abuse and mental health as well as emotional abuse and mental health were also supported. Further more, on somatization, interpersonal sensitivity, depression, hostility, phobic anxiety, paranoid ideation, psychoticism, etc, a reverse-linear re lation existed. Physical abuse supported a reverse-linear relation with interpersonal sensitivity, depression, paranoid ideation, etc. and sexual abuse supported a reverse-linear relation with depression. These findings suggest that school and family have to concern themselves with the mental health of children because experienced abuse and family characteristics do indeed affect the mental health of children.

• Journal of Family Resource Management and Policy Review
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• v.14 no.4
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• pp.279-298
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• 2010

Although women's economic participation has been increasing in Korea, the utilization of educated women's labor is still low. Therefore, vocational training programs for women are both important and necessary. This study examines the vocational training programs for women offered by the three largest vocational training centers in Jeju: the Woman Resources Development Center, the Jeju Women's Development Center, and the Seogwipo City Women's Cultural Center. This study also analyzes the students' satisfaction with these vocational training programs and identifies the related variables that cause differences in their levels of satisfaction. The sample includes 397 respondents who were surveyed from June 23 to September 12, 2008. Moreover, the data are analyzed by conducting a one-way ANOVA, t-test, and Duncan's Multiple Range(DMR)test. The major results of the study are as follows. First, the vocational training programs in Jeju consist of lectures that cover various subjects. The programs mainly focus on work that offers relatively low wages and requires few skills, and the duration of the programs is short. Second, the original goal of the programs does not meet the needs of women who are seeking employment. The participants respond that they want more appropriate programs that are designed by considering their need for employment, support them in finding a job, and re-educate them. Third, most of the participants are satisfied with their vocational training experiences, and their satisfaction with the instructors is especially high. The differences in their levels of satisfaction are caused by economic characteristics such as the location of the student's residence, home ownership, and the level of life. The results of this study suggest that there is a need to separate vocational/employment training from general education for women. Moreover, the vocational training programs for women should be more specialized according to the different needs of each group.

• Journal of the Korean Home Economics Association
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• v.44 no.5 s.219
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• pp.157-169
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• 2006

The purpose of this study was to verify the effectiveness of a life review-narrative group therapy program aimed at increasing ego-integrity in the elderly. The life review-narrative group therapy program was organized according to the tfe course from childhood to old age. The objectives of the program were for the elderly to enhance their self-worth, become aware of their individual self existence, accept aging and death, accept the past and present life, and to make the most of their experiences of overcoming difficulties. The counseling techniques used in the program were mainly reminiscence and re-authoring of the narrative therapy. Thirty-two elderly people aged 60 years and over (16 in each of experimental and control groups) were selected randomly from the Daegu Metropolitan City General Welfare Center for the research. The two groups were identified as equivalent for the study in a pre-test. The program of the experimental group was implemented twice a week for 90 minutes per session over a 6-week period (Sep. 8th - Oct. 14th. 2005). The pre (Sep. 8th 2005), the post (Oct. 14th. 2005) and follow-up (Nov. 14th. 2005) tests were implemented in ordo, to verify the effectiveness of the program. The instruments used in the study were the Ego-Integrity Scale. The data were analyzed using t-test, and Ore-Factor Repeated Measures ANOVA. The findings of the study were as follows. The experimental group evidenced significant effects on enhancing ego-integrity. The result of the post hoc multiple comparisons showed that the effects of the life review-narrative group therapy Program were maintained for one months. Meanwhile the control group did not show any significant change in ego-integrity. Based on these findings, the limitations of the study were discussed, and further research was suggested.