• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.683-689
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• 2017

Given that the ratio of adolescents among North Korean refugees is increasing, it is the right time to study the present situation of juvenile North Korean defectors. North Korean adolescents tend to find themselves in an uncomfortable situation as they experience unfamiliar lives in South Korea, and act passively in various situations. A proper resolution of such problems in this situation will help them adapt smoothly to South Korean society. This study investigates the relationship between social support, self-esteem, and problem-solving abilities of North Korean adolescent refugees based on a survey on 213 North Korean teens which was performed for 24 days beginning on June 14 2017. The study results show that emotional, material, informational, and evaluative support for North Korean adolescent defectors, which is a type of social support, had a positive effect on their self-esteem, and self-esteem in turn had a positive effect on their problem solving ability. In addition, self-esteem had a mediating effect on the relationship between the four types of social support and problem solving ability of North Korean adolescent defectors. This study suggested a practical plan to improve the problem solving ability of North Korean adolescent defectors for their smooth adaptation to South Korean society, through social support and improved self-esteem of North Korean adolescents, such as program development or self - development training.

• Journal of the Korean Geotechnical Society
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• v.23 no.12
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• pp.61-73
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• 2007

As a part of Load and Resistance Factor Design(LRFD) code development in Korea, in this paper an intensive reliability analysis was performed to evaluate reliability levels of the two static bearing capacity methods for driven steel pipe piles adopted in Korean Standards for Structure Foundations by the representative reliability methods of First Order Reliability Method(FORM) and Monte Carlo Simulation(MCS). The resistance bias factors for the two static design methods were evaluated by comparing the representative measured bearing capacities with the design values. In determination of the representative bearing capacities of driven steel pipe piles, the 58 data sets of static load tests and soil property tests were collected and analyzed. The static bearing capacity formula and the Meyerhof method using N values were applied to the calculation of the expected design bearing capacity of the piles. The two representative reliability methods(FORM, MCS) based computer programs were developed to facilitate the reliability analysis in this study. Mean Value First Order Second Moment(MVFOSM) approach that provides a simple closed-form solution and two advanced methods of FORM and MCS were used to conduct the intensive reliability analysis using the resistance bias factor statistics obtained, and the results were then compared. In addition, a parametric study was conducted to identify the sensibility and the influence of the random variables on the reliability analysis under consideration.

• Journal of the Korean Geotechnical Society
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• v.36 no.7
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• pp.15-28
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• 2020

As the skin friction of an embedded pile is produced by the cement paste injected into the borehole, the skin friction cannot be evaluated by the end of initial driving test, which is conducted before the cement paste is cured. In addition, the total resistance of an embedded pile may not be properly evaluated during the restrike test if the base resistance is not fully mobilized because of the insufficient driven energy. The objective of this study is to suggest a new load-settlement curve of embedded piles by combining the results of the end of initial driving and restrike tests. Test piles are installed at fields by using the embedded pile method, and the results of the dynamic pile tests are analyzed using CAse Pile Wave Analysis Program (CAPWAP) after the end of initial driving and restrike tests are conducted. A new load transfer curve, which combines the behaviors of the pile base at the end of initial driving and of the pile shaft at the restrike, is suggested, and a new load-settlement curve is obtained. Subsequently, the resistances of the test piles are evaluated using the combined load-settlement curve, and compared with the results from the end of initial driving and restrike tests. The results showed that the resistances, which are evaluated using the combined load-settlement curve, may overcome the underestimation of the resistance because of the insufficient driven energy. In addition, the resistance resulted from the combined load-settlement curve may be more similar to that from the static load test because the suggested load transfer curve is closer to the behavior of the embedded pile compared to the results of end of initial driving and restrike tests. Therefore, this study demonstrates that the combined load-settlement curve may be effectively used for the evaluation of the bearing capacity of embedded piles.

• Korean Journal of Culture and Social Issue
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• v.29 no.4
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• pp.455-476
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• 2023

This study focused on the characteristics of motiveless crimes that mainly originated from interpersonal problems and were acts of revenge against innocent third parties. This study confirmed the relationship between the experience of social exclusion and displaced aggression and examined the relationship between the two variables. We sought to confirm the role of related factors such as stress and social support. For this purpose, we established and tested hypotheses about the mediatingon effect of stress and the moderated mediatingon effect of social support on the effect of social exclusion experience on displaced aggression among 353 adult males aged between 19 and 49 years. The main results are that, first, social exclusion had a positive effect on displaced aggression. Second, stress was found to partially mediate the relationship between social exclusion and displaced aggression. Third, the hypothesis that social support would moderate the mediating effect of stress was not provedvaild, but the conditional direct effect of social support was confirmed in the mediation model. In other words, social support did not affect the indirect effect mediated by stress, but appeared to moderate the direct effect between social exclusion and displaced aggression. Social exclusion's prediction of displaced aggression was significant only in the average social support group (mean) and the high group (M+1SD), and appeared to increase as the group increased. This means that in groups with high social support, displaced aggression is used as a stress control strategy, which is a different result from previous studies that found that social support plays a role in lowerings aggression. People with low levels of social support showed unexpected results in that they used displaced aggression less frequently despite their experiencinge of social exclusion. In the discussion, the social implications of these results were interpreted, and additional research ideas were proposed to specify the relationship between social exclusion and displaced aggression.

• Proceedings of the Safety Management and Science Conference
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• 2012.11a
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• pp.493-497
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• 2012

개인투자자들은 자신이 지지한 정당이 집권을 하였을 경우 경제상황이 좋아질 것이라는 기대감(expectation)을 갖게 된다. 이에 따라 개인투자자들은 지지한 정당이 집권하였을 때, 경제의 불확실성(uncertainty)이 줄어들고 주가도 상승할 것이라고 믿는 경향이 있다. 이러한 개인투자자들은 실제로 주식투자 규모를 늘려가는 상황을 만들며, 소형주(small cap)를 비롯하여 가치주(value stocks), 경기민감주 등에 대한 투자규모를 늘리는 경우가 흔히 발생하고 있다. 이와 같은 새로운 정부에 대한 기대감이 반영되면서 새로운 정부의 집권 초기에 이들 개인투자자들은 주식보유기간을 보다 길게 가져가려는 경향도 보인다. 반면에 개인투자자들의 경우 자신이 지지하지 않는 집권정부가 들어섰을 때 경제의 불확실성(uncertainty)이 증가한다고 판단하여 보유주식을 처분하려는 경향이 증대되고 있다. 한국의 경우 개인투자자들의 투표성향이 체감 소득수준 및 집권정부별 경제정책에 따라 영향을 받을 수 있는 것으로 나타나 주가수익률 등의 움직임에 주목할 필요가 있다고 판단된다.

• The Korean Journal of Financial Management
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• v.14 no.3
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• pp.231-261
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• 1997

본 연구는 우리나라 상장기업에서 만연하고 있는 대주주와 소액주주간의 차등배당이 결정되는 배경을 이해하기 위하여 투자재원가설, 이익가설 및 특권적소비가설의 세가지 가설을 설정하고 상장기업 191개사에 대하여 1987년부터 1996년까지 10년간을 자료를 이용하여 실증분석을 실시하였다. 실증분석은 균등배당업체와 차등배당업체간의 기업 특성의 평균차이분석과 차등배당여부를 종속변수로 하고 기업특성변수를 독립변수로 한 Logit 분석의 두 가지를 실시하였는데 실증분석결과를 요약하면 다음과 같다. 먼저 이익가설은 전반적으로 지지되었으나 이익가설의 핵심인 배당감소의 역정보효과가설은 지지하는 뚜렷한 증거를 발견할 수 없었다. 투자 재원가설은 재벌기업과 비재벌기업간에 큰 차이를 보였는데 비재벌기업은 투자재원의 크기가 차등배당가능성에 유의적인 부의 영향을 주는 반면 재벌기업은 투자재원의 크기가 차등배당에 유의적인 영향을 주지 않는 것으로 나타나 재벌기업에는 내부자본시장이 존재함이 간접적으로 입증되었다. 끝으로 특권적소비가설은 제2대주주의 존재여부가 차등배당 가능성에 부의 유의적인 영향을 주는 것으로 나타나 부분적으로 지지되었다.

• Korean Chemical Engineering Research
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• v.44 no.3
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• pp.243-247
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• 2006

MFI zeolite membranes were prepared on anodic alumina (Anodisc) as support. First, silicalite-1(${\approx}1.2{\mu}m$) seed crystals were attached to the surface of the support via chemical bonding, and the a- and b-axis oriented zeolite membranes could be synthesized on the support coated with the monolayer of the seed crystals by secondary growth hydrothermal synthesis. The zeolite membranes prepared were characterized using scanning electron microscope and analyzed by X-ray diffraction.

• Korean Journal of Child Studies
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• v.22 no.4
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• pp.85-97
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• 2001

This study examined the effects of mother's support and peer acceptance on children's domain specific self-esteem and the moderating effects of best friend's support. The subjects were 272 $4^{th}$ and 349 $8^{th}$ grader in Chin-ju. Data were analyzed by the SAS/PC+ program, including Cronbach's ${\alpha}$, Pearson's correlation, multiple regression and two-way ANOVA. Findings were that peer acceptance had a higher influence on academic-general self, peer-related self, physical-appearance self, personality self and physical-competence self than did mother's support. Mother's support had a higher influence on home self than did peer acceptance. Best friend's support and mother's support interacted with children's physical-appearance self and physical-competence self. Best friend's support and peer acceptance interacted with student's peer-related self.

• Journal of the Microelectronics and Packaging Society
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• v.11 no.1
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• pp.59-64
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• 2004

The performance of fuel cell electrode depends on the characteristics of the catalyst support material. This paper deals with the use of CNF(carbon nanofibre) and CNT(carbon nanotube) as platinum catalyst support. The CNF and CNT were synthesized with catalyst treated by mechanochemical process and were prepared by chemical vapor deposition (CVD) method. The platinum supported on CNF and CNT for polymer electrolyte membrane fuel cell (PEMFC) application. In result, the best I-V characteristic was verified by the prepared MEA(membrane electrode assembly) from twisted CNF that had a diameter of 65 nm.

• Proceedings of the KSME Conference
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• 2003.11a
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• pp.1297-1302
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• 2003

KAERI has contrived 15 kinds of spacer grid shapes of its own since 1997 and applied for domestic and foreign patents. To date, KAERI has obtained US and ROK patents for 6 kinds of spacer grid shapes among them and the others are under review in USA, EC, China, and ROK. In this study, mechanical/structural performance analysis and test on two spacer grid shapes that are assumed to be the most effective candidates for the spacer grid of the next generation nuclear fuel in Korea was carried out. The result has shown that the performances of the candidates are better or not worse than those of the current spacer grid.