• Nuclear Engineering and Technology
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• 제51권5호
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• pp.1314-1321
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• 2019

In case of multiple failure scenario, such as LOCA with ECCS failure, the decay heat continues to raise the reactor core temperature, eventually leading to the core voiding. In such scenario the convective heat transfer becomes poor and the majority of the heat transfer from fuel bundle takes place by radiation mode. During this abnormal working condition, if the channel pressure is less than 1 MPa, the PT sags and come in contact with the CT. This results in high rate of heat transfer from contact location to moderator. The present paper aims to capture the temperature profile over a simulated nuclear channel during such scenario at a steady state temperature of $600^{\circ}C$ (Centre pin) at two different configurations of PT i.e. PT concentric with CT and PT contact with CT. The results showed that the bottom nodes of all the components (Fuel bundle, PT and CT) of the simulated channel was greatly influenced by the PT/CT contact. Moreover, higher temperature were observed at top nodes of the PT and outer pins of the fuel bundle. However, no significant variation in temperatures were obtained in fuel bundle and CT in concentric condition.

• 지식경영연구
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• 제12권1호
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• pp.17-37
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• 2011

This paper is aimed at investigating the influence of the learning organization's structural characteristics, learner's characteristics, and perceived organizational support (POS) on organizational knowledge creation. also the POS is tested as a moderator on the relationship between learner's characteristics including learning goal orientation and learning self-efficacy and organizational knowledge creation. the results are as follows. for main effect hypotheses, both connecting the organization to its environment and establishing systems to capture and share learning system representing learning organization's structural characteristics have significant positive impact on organizational knowledge creation. the POS also has a significant impact on organizational knowledge creation. However, learning goal orientation and learning self-efficacy have not significant impact on organizational knowledge creation. for moderating effect hypothesis, POS moderates the relationship between learning goal orientation and organizational knowledge creation, which means if the POS is high then learning goal orientation has more significant positive impact on it. Based on our findings, we conclude that structural characteristics of learning organization provide organizations with an opportunity of knowledge creation. in particular, interconnectedness of organization with environment and organizational knowledge sharing systems determine the ways of behaving that are related to learning within organizations. however, learner's characteristics did not have a significant effect on organizational knowledge creation, which could be interpreted due to the fact that employees are not motivated to create new knowledge if they are rarely required to involve challenging works, generate new knowledge, or share preexisted knowledge with others.

• 지식경영연구
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• 제18권4호
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• pp.63-96
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• 2017

In a competitive organizational environment, members view completing tasks to perfection without mistakes as the requirement for success and good evaluation from others. However, unrealistically strong perfectionism can have negative effects on members' psychological states and organizational performance. This study focuses on evaluative concerns perfectionism, the negative aspect of perfectionism, based on positive psychology theory to explore the positive mechanism that comes into place in the process of strengthening organization members' resilience. For this purpose, we performed a moderated moderation analysis to investigate whether the moderating effect of leaders' social support (primary moderator) is moderated by their emotional intelligence (secondary moderator). To verify our research model, we conducted a two-part survey of 252 employees in various industries with a time interval to minimize the common method bias. Job rank and positive affectivity were set as control variables to identify the clear causal relationship among variables. Our findings showed that first, evaluative concerns perfectionism reduced resilience; second, leaders' social support positively moderated the relationship between evaluative concerns perfectionism and resilience; and third, the leaders' emotional intelligence positively moderated the two-way interaction between evaluative concerns perfectionism and the leaders' social support, confirming a moderated moderation. Our findings suggest the need for leaders to assume multidimensional roles to enhance the positive traits of organization members, especially in today's complex business environment. The implications of our findings are further discussed in relation to knowledge management and the development of organization members who exhibit evaluative concerns perfectionism, along with suggestions for future research.

• International Journal of Contents
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• 제16권3호
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• pp.18-32
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• 2020

The aim of this study was to perform a meta-analysis of the learning outcomes of immersive learning technologies in English language teaching (ELT). This study examined 12 articles, yielding a total of 20 effect sizes. The Comprehensive Meta-Analysis (CMA) program was employed for data analysis. The findings revealed that the overall effect size was 0.84, implying a large effect size. Additionally, the mean effect sizes of the dependent variables revealed a large effect size for both the cognitive and affective domains. Furthermore, the study analyzed the impact of moderator variables such as sample scale, technology type, tool type, work type, program type, duration (sessions), the degree of immersion, instructional technique, and augmented reality (AR) type. Among the moderators, the degree of immersion was found to be statistically significant. In conclusion, the study results suggested that immersive learning technologies had a positive impact on learning in ELT.

• 지식경영연구
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• 제16권4호
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• pp.47-67
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• 2015

Present study investigates the impact of privacy concerns of SNS users on continued intention to use since the privacy infringement issue emerges when smartphone use has been increasingly prevalent. In particular, moderating effect of perceived usefulness and mediating effect of trust between privacy concerns and continued intention to use are further evaluated. Contrary to the expectation that users of SNS will resist to use SNS because of privacy concerns, the number of users of SNS is still growing exponentially. Current paradox might be explained by the intervening factors such as perceived usefulness and trust. The results verify the mediating role of trust and no moderating role of perceived usefulness. Finally, the practical implication for businesses who utilize SNS in their marketing strategy is discussed.

• 한국의류학회지
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• 제28권9_10호
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• pp.1197-1207
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• 2004

The purpose of this study was to identify the impact of materialism on the attitude toward purchasing foreign luxury brands and the moderating effect of consumer ethnocentrism on this impact. Data were gathered by surveying university students living in Seoul metropolitan area using convenient sampling, and 325 questionnaires were used in the statistical analysis. In analysing data, confirmatory factor analysis and path analysis were conducted using structural equation modeling. Results showed that success factor of materialism gave rise to negative attitude toward purchasing foreign luxury brands while centrality factor of materialism spurred positive attitude. Consumer ethnocentrism also showed a significant effect as a moderator on the relationship between materialism and attitude: The relationship between materialism and attitude was stronger among subjects who had lower consumer ethnocentric tendencies than among subjects who had higher consumer ethnocentric tendencies.

• 한국의류학회지
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• 제23권3호
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• pp.471-482
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• 1999

This study examined the effect of abolition of school uniform on personality. The subjects were 317 boys(mean age : 18) and 312 girls(mean age : 18) in third grade of high school. the subjects were selected from 4 uniform high schools and 4 free-choice wearing clothes high school in which were situated at north and south part of Han-River in Seoul. They wee administered with the following questionnaires to measure the creativity individuality self-efficacy. conformity of behaviour conformity of attitude autonomy and responsibility. Results indicated that (1) the effect of abolition of school uniform on personality must be considered in the moderator effect of the preferred clothes of students. These results were discussed and its implication and following study were suggested.

• East Asian Economic Review
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• 제23권1호
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• pp.3-26
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• 2019

This study investigates the effect of high-skilled inventor emigration rate on growth rate of the country of origin (COO). Inventor emigrants represent the human capital that can generate highly innovative work. The social network they form spurs knowledge diffusion and technology transfer back to their COOs, which in turn affects innovation and growth in their home countries. We run dynamic panel estimation for 154 countries during 1990-2011, and empirically show that a positive and statistically significant effect exists for the interaction of inventor emigration and trade. The result indicates that the direct negative impact of the brain drain can be mitigated by the positive feedback effect generated by the high-skilled inventor emigrants abroad. When coupled with an active trade policy that reinforces growth, countries can partially recoup the direct effect of the human capital loss. We stress the importance of international trade for successful technology transfer to occur, and offer insights for policies that can utilize the benefits of the rich social network of their high-skilled emigrants.

• 가족자원경영과 정책
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• 제20권3호
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• pp.131-149
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• 2016

The aims of this study are to investigate the impact of the experience of exposure to domestic violence(witnessed interparental conjugal violence and child abuse) on mental health among college students, and to explore whether social support acts as a moderator between domestic violence and mental health. Through this process, I intended to provide a reference base to suggest substantial interventions for family welfare by helping students to overcome negative domestic violence exposure experiences and adapt as healthy members of society. To achieve this goal, the study established a conceptual framework by considering the mental health of adolescents with domestic-violence exposure experience as a dependent variable, domestic violence exposure experience (witnessed interparental conjugal violence and child abuse) as an independent variable, and social support as a moderator of the relationship between these two variables. The subjects composed 747 college students in 8 colleges in Seoul. The main summary of this study is as follows: First, according to the analysis of domestic-violence exposure experience, all the subjects of this study had substantial experience of violence at home and witnessed interparental conjugal violence. These students scored 3.83 points in social support, higher than the median of 3, implying that these students had a higher awareness of social support. Moreover, their mental health score was 3.50 points, which is higher than the median of 3, indicating a somewhat positive tendency toward mental health. Second, to explore the moderating effects of social support between child violence experience and mental health, gender, age, financial status, academic-performance, child abuse and social support were input in the first step, and then buffering effects were examined by entering an interaction term to the first step in the second step. There was a significant interaction between social support and mental health. Therefore, social support was identified as having moderating effects on the relationship between child violence and mental health. Third, the analysis of moderating effects of social support between witnessed interparental conjugal violence and mental health revealed that social support had a positive influence on mental health in the first step. By contrast, the interaction term of witnessed interparental conjugal violence and social support showed no significance, indicating no moderating effect of social support in the second step. To sum up, social support served as a moderator for mental health among college students with child abuse experience, but had no moderating effect on witnessed interparental conjugal violence experience.

• 한국심리학회지:법
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• 제12권2호
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• pp.121-149
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• 2021

진술의 진실성을 평가하는 절차인 진술타당도분석(Statement Validity Analysis: SVA)은 국내외 범죄 수사와 법정 상황에서 활용되고 있다. SVA 절차 중 내용분석 단계에서는 준거기반내용분석(Criteria-Based Content Analysis: CBCA) 준거를 사용하여 진술에서 실제 경험에 기반하였을 때 나타나는 특징들이 현출되는지를 평가한다. CBCA 준거의 변별력과 효과크기에 대한 국내 연구는 다양한 패러다임으로 이루어졌지만, 그 연구 결과들의 일관성은 여전히 검증되지 않았다. 이에 본 연구에서는 국내에서 관련 연구가 시작된 2004년부터 2020년까지 수행된 CBCA 준거 관련 연구들(14개의 연구자료)에 대한 메타분석을 실시하였다. 연구결과, CBCA 총점이 진실과 작화를 성공적으로 변별해내고 있었다. 준거별로는, 네 개의 준거(3번, 4번, 10번, 12번; 모두 인지적 준거)에서 정적(+)인 효과크기가 유의미했다. 그러나 18번 준거(동기적 준거)는 CBCA의 기본 가정과는 반대로, 효과크기가 부적(-)으로 유의미한 것으로 나타났다. 또한, 조절효과분석이 가능한 열한 개의 준거(2번~9번, 12번, 13번, 15번) 각각에 대해 잠재적 조절변인의 영향을 살펴본 결과, 일부 준거들에 대하여 진술인의 성별 및 신분, 연구 유형 및 설계, 사건 유형, 평가자 수, 출판 여부의 조절효과가 유의미한 것으로 나타났다. 따라서 본 연구결과는 진실여부를 타당하게 판단하기 위해서는 CBCA 총점보다는 세부 준거, 특히 인지적 준거에 초점을 맞추는 것이 중요하며, 잠재적 조절변인의 영향 가능성 또한 중요하게 고려해야 함을 시사한다. 관련하여 본 연구의 의의, 제한점 및 추후 연구 방향에 대해 논하였다.