• Proceedings of the Korean Vacuum Society Conference
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• 1999.07a
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• pp.188-188
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• 1999

The embedded atom method (EAM) of Daw and Baskes as a semiempirical method, has been successfully applied to the fcc or nearly filled d-band transition metals due to its computational feasibility and its methodological simplicity. Then Baskes modified the EAM (MEAM) to include directional bonding and applied it to metals, semiconductors, and diatomic gases, all of which have different types of bondings. Here, we present a detailed study of the energetics of adsorption on the fcc(111) surfaces and binary system within the framework of MEAM. In adsorption on fcc(111) surfaces, there are two energetically favored sites, so called, fcc site and hcp site, which may trigger stacking fault in the growth of films and might switch growth mode between 3D growth and layer by layer growth. We scrutinized the role of the hcp sites, which would offer dynamic growth pathways although the dynamics are not yet clear within the limited experimental resolution. Featuring these transient motions in the atomic level should contribute to the understanding the growth mechanisms on fcc(111) surface. And we also applied MEAM for initial stage energetics at the Cr coverage of sub- monolayer on W(110). We hope that recently observed extraordinary growth behavior at the Cr coverage of 0.7 monolayer, self- organized nano-scale lines, can be resolved in this MEAM binary system calculation.

• Korean Journal of Occupational Health Nursing
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• v.30 no.2
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• pp.68-77
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• 2021

Purpose: This study was conducted to investigate the mediating effects of mindfulness and growth mindset on the relationship between occupational stress and happiness among clinical nurses. Methods: The participants were 220 clinical nurses working in two hospitals in D city. Self-report questionnaires were used to collect the data, which were analyzed using t-test, one-way ANOVA, Pearson's correlation coefficients, hierarchical multiple regression, and Sobel test. Results: Occupational stress had significant negative correlations with happiness, mindfulness, and growth mindset. On the other hand, mindfulness and growth mindset had significant positive correlations with happiness. Meanwhile, partial mediating effects of mindfulness and growth mindset were found on the relationship between occupational stress and happiness. Conclusion: Mindfulness and growth mindset can play an important role in buffering the negative influence of occupational stress on the happiness of clinical nurses. Therefore, interventions that ease occupational stress and encourage mindfulness and growth mindset are recommended to increase happiness among clinical nurses.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.275-285
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• 2020

This study aimed to track changes in students' perception about schools over time, to analyze how participation in the Education Welfare Priority Support Project(hereafter "the Project") explains the changes, and to determine how the results of changes affect students' learning engagement, self-confidence, and peer relationship. Data were collected from 103 schools nation-wide(51 elementary and 52 middle schools) from 2015, 2016 and 2017 from 820, 911, and 837 students, respectively. The data were analyzed by applying a latent growth model with two stages: unconditional and conditional. The findings are that first, the perception about schools by the students who participated in the Project increased over time; and second, that the improvement of students' perception of schools has a positive influence on their learning engagement, self-confidence, and peer relationship. In the future, it was suggested that programs aimed at improving positive perception about schools should be provided to all students led by teachers, and a customized integrated support program should be arranged to students in need of intensive support by the educational welfare specialists.

• Journal of Korea Technology Innovation Society
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• v.13 no.1
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• pp.204-230
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• 2010

The accelerating growth in Technology-Based Self-Service (TBSS) today is giving rise to questions about the acceptance of such forms of service delivery by all kinds of consumers. Using the Technology Acceptance Model (TAM) and TBSS quality evaluation model as a theoretical framework, this study investigates the effects of perceived usefulness, perceived easy of use, enjoyment of users acceptance of TBSS and self-monitoring as a individual variable. The results lend support to the hypothesist. Implications for service practitioners as well as directions for future research are discussed.

• Journal of Families and Better Life
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• v.30 no.4
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• pp.49-57
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• 2012

This study aims examining a few elements representing a family-friendly corporate environment such as the attitude of CEOs, corporate culture, the support from direct supervisors and their influence on the sense of self-efficacy and career success of women managers. The summary and conclusion of the result of this study is as follows; first, the positive attitude of CEOs as one of the representing elements for family-friendly corporate environment was found to affect the sense of self-efficacy and the career success of married women managers with positive effects. Second, the support of superiors turned out to have a positive effect on career development of women managers. Finally, the sense of women's self-efficacy turned out to affect career success of women managers. For the use of female resources as a growth power, the attitude of CEOs who promote gender equality, and the support of supervisors will play a very important part, and in order to build a corporate culture with gender equality, promotion and policy-making on corporate as well as government level are required.

• Journal of Microbiology and Biotechnology
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• v.11 no.5
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• pp.739-748
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• 2001

A self-organizing fuzzy logic controller using a genetic algorithm is described, which controlled the glucose concentration for the enhancement of flavonoid production in a fed-batch cultivation of Scutellaria baicalensis G. plant cells. The substrate feeding strategy in a fed-batch culture was to increase the flavonoid production by using the proposed kinetic model. For the two-stage culture, the substrate feeding strategy consisted of a first period with 28 g/I of glucose to promote cell growth, followed by a second period with 5 g/I of glucose to promote flavonoid production. A simple fuzzy logic controller and the self-organizing fuzzy logic controller using a genetic algorithm was constructed to control the glucose concentration in a fed-batch culture. The designed fuzzy logic controllers were applied to maintain the glucose concentration at given set-points of the two-stage culture in fed-batch cultivation. The experimental results showed that the self-organizing fuzzy logic controller improved the controller\`s performance, compared with that of the simple fuzzy logic controller. The specific production yield and productivity of flavonoids in the two-stage culture were higher than those in the batch culture.

• Korean Parent-Child Health Journal
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• v.11 no.1
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• pp.73-83
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• 2008

Purpose: This study was to verify the effectiveness of group program for promoting empowerment and self-advocacy of the the mentally disabled persons' families. Methods: This program was set up for the mentally disabled persons' families to share their experiences, do consciousness raising, advocate themselves through group process. A pre-post control group design was used for this study. Results: The results of this study verified that group program was effective to promote empowerment and self advocacy of the mentally disabled persons' families. Also group program helped to express and ventilate family burden actively. Conclusion: This study suggests as follows. In the mental health social work practice we need to develop group programs for family to talk about themselves, to ventilate their emotions, to understand their circumstances and to initiative the change of mental health circumstances as well as education and coping skills about mental illness. For this, there is a need for mental health social worker to have a macroscopic viewpoint and work with family. Also there is a need for mental health social worker to promote family self-help groups and to support their construction and growth.

• Human Ecology Research
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• v.59 no.3
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• pp.341-351
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• 2021

The purpose of this study was to examine the longitudinal relationships between Korean adolescents'mobile phone dependency, trajectories of depression, and self-regulated learning abilities. To achieve these goals, structural equation modeling analysis was conducted, using the 3rd, 5th and 7th wave of the data on 4th graders taken from the Korean Children and Youth Panel Survey. The results can be summarized as follows. First, growth-curve longitudinal analysis indicates that depression in 6th through 10th grade has increased. Second, mobile phone dependency among adolescents at 6th grade has a significant effect on both the initial value and the rate of change in depression. Also, the initial value and the rate of change in depression have significant relationships with mobile phone dependency at 10th grade. Moreover, both increased levels of mobile phone dependency and the rate of change in depression significantly influence adolescents'self-regulated learning abilities at 10th grade. Based on a longitudinal data set, these findings demonstrate the causal relationships between Korean adolescents'trajectories of depression and their mobile phone dependency. The findings also provide a comprehensive framework with implications for adolescents'development through an understanding of the relationships between adolescents'depression and mobile phone dependency, which impact their self-regulated learning abilities.

• International Journal of Advanced Culture Technology
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• v.9 no.4
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• pp.162-168
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• 2021

This is a group pretest-posttest design study that aim to evaluate the effect of problem-based learning using flipped learning to self leadership, nursing leadership, and confidence of nursing students. The subjects were 87 4th nursing students who took nursing management from March 15 to April 26, 2021. A questionnaire was used to measure self leadership, nursing leadership, and confidence. The measurement of self leadership is a 5-point Likert scale that employs a questionnaire. Flipped learning uploaded a 5-8 minute lecture video, and the subjects learned on learning management system, using smart device. PBL teaching was developed about personal growth, cooperation, nursing excellence, creative problem solving, influence. As a result of the study, self leadership was significantly improved after education than before education(t=-6.27, p<.001). Nursing leadership and confidence were significantly changed before and after education(t=-16.10, p<.001; t=-2.37, p<.001). According to the results of this study, the PBL teaching method using flipped learning is an effective teaching and learning strategy for improving leadership, and confidence. In future studies, it will be necessary to develope and verify specific teaching and learning methods by applying nursing experts in consideration of the type of leadership.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.5A
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• pp.441-450
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• 2006

Recently, with the exponential growth of the number of Internet users, IP traffic which occupies more than 90 percent of the entire Internet traffic affects significantly to the performance of networks. Therefore, the design of the self-similar traffic generator reflected the feature of IP traffic is very important to design the networks efficiently and evaluate the performance of it correctly. In this paper, we design the self-similar traffic generator using OPNET. In order to implement the self-similar characteristics, ON-OFF sources with Pateto distribution are employed and aggregated. The designed self-similarity traffic generator is evaluated and verified with R/S plot, variance time(VT) plot under the various offered loads and the number of sources. It is expected that the designed self-similar traffic generator can be put to practical use when wire or wireless networks is designed and verified as well as it can be useful to decide the specific parameter value for Internet traffic modeling.