• JSTS:Journal of Semiconductor Technology and Science
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• v.14 no.5
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• pp.518-524
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• 2014

The substrate doping concentration dependence of strain-enhanced electron mobility in (110)/<110> nMOSFETs is investigated by using a self-consistent Schr$\ddot{o}$dinger-Poisson solver. The electron mobility model includes Coulomb, phonon, and surface roughness scattering. The calculated results show that, in contrast to (100)/<110> case, the longitudinal tensile strain-induced electron mobility enhancement on the (110)/<110> can be increased at high substrate doping concentration.

• The Bulletin of The Korean Astronomical Society
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• v.41 no.1
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• pp.66.4-67
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• 2016

Our recent investigation (Lee et al. 2015) suggests that the presence of double red clump in the Milky Way bulge is another manifestation of multiple populations observed in halo globular clusters. The origin of Helium enhancement in the 2nd generation population (G2), however, is not yet fully understood. Here we investigate the origin of this super-Helium-rich population in the framework of self-enrichment scenario. We find that chemical enrichments and pollutions by asymptotic giant branch stars and winds of massive rotating stars can naturally reproduce the observed Helium enhancement. The Helium to metal enrichment ratio appears to be ${\Delta}Y/{\Delta}Z=6$ for G2, while the standard ratio, ${\Delta}Y/{\Delta}Z=2$, is appropriate for G1, which is probably enriched mostly by typeII supernovae.

• Korean Medical Education Review
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• v.14 no.1
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• pp.11-18
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• 2012

The purpose of this article is to discuss the enhancement of medical professionalism and the artisan spirit proposed by Yu and to suggest curriculum content and methods to improve medical professionalism. Professionals are those who can share their knowledge with others and proceed under self-reflection on moral values and social expectations. The goal of medical education is to cultivate students to be good as well as to do well. To achieve this goal, educators should foster students to be good doctors for 99% of patients, rather than to be high performers for 1% of patients. There are two types of curriculum for medical professionalism: hidden and formative curricula. In these curricula, we doctors may be good role models for medical students. The curriculum contents and the methods for implementation that are based on accumulated experience can be embedded into education on professionalism. In addition, as suggested by Miller, how to evaluate medical professionalism based on a framework of clinical assessment must be discussed. Finally, it is suggested that the process of education on medical professionalism should be a kind of cultural movement to raise good doctors.

• Journal of the Korean Society for Library and Information Science
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• v.52 no.2
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• pp.143-164
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• 2018

The purpose of this study was to investigate the relationship between public library use and the individual's personal value system. The personal value system was measured by Schwartz's (1992) Theory of Basic Human Values. The theory includes ten universal values, which can be categorized into four higher-order values: namely, self-transcendence vs. self-enhancement; and openness to change vs. conservation. The data were collected on the web from 1,000 Korean adults who were 18 years old or above using a quota sampling method with respect to the distributions of gender, age, and geographic locations of the general Korean adult population. The collected data were analyzed using multi-dimensional scaling method, t-tests, and multiple correlations. The results showed that the public library is more likely to be used by the individuals who value "openness to change" (representing self-direction and stimulation), and "self-enhancement"(representing achievement, power, hedonism/sensuous pleasure) than those who value "conservation" (representing safety, stability of society, conformity to rules, tradition) and "self-transcendence" (representing interest in other's well-being, and tolerance, welfare of humanity and community). The findings suggest that public library uses reflect the characteristics of major library services, such as reading and self-learning, which are very autonomous and individualistic in their nature. The findings are valuable in understanding the nature of the functions performed by the current Korean public libraries that are reflected in the personal values of Korean adult library users.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.130-130
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• 2016

Bioinspired hierarchical nanostructures for self-cleaning s-tnwjurface and SERS substrates are investigated. The multi-level hierarchy is combined with CuO nanowire and additional nanoscale structures. CuO nanowire, which has extremely high aspect ratio, serves as a base structure of multi-level hierarchy and additional flower like structures are placed on the CuO nanowires. Since as-fabricated CuO nanostructures are hydrophilic, the surface is coated with perfluorooctyltrichlorosilane in order to change its wetting property to hydrophobic. While those CuO based nanostructures have a sufficient roughness for superhydrophobic characteristics, hierarchical nanoflowers on nanowire structures lead to a self-cleaning surface. Furthermore, flower like nanostructures provide reentrant curvatures, thus enabling oleophobic property. The surfaces has a repellency even for a tiny droplet (10 nL) of low surface tension liquids (~35 mN/m). On the on hands, nanoflowers provide many number of nanoscale gaps. After a thin layer of silver is deposited on the surface of CuO nanostructures, those nanoscale gaps act as hot-spot for surface enhanced Raman scattering (SERS). To analyze SERS enhancement of the surfaces, Raman shift is measured with varying molar density of 4-Mercaptopyridine from mM to pM. From these results, hierarchical CuO nanostructures are suitable for self-maintenance and cost effective SERS sensing applications.

• Korean Journal of Human Ecology
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• v.23 no.2
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• pp.219-229
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• 2014

The purpose of this study was to investigate the effects of preschooler's self-regulation and maternal parenting behavior on preschooler's game immersion. Subjects were 253 4- to 5-year-old preschoolers(118 boys, 135 girls) and their mothers. Data were analyzed by descriptive statistics, t-test, correlation analysis and stepwise multiple regression analysis. The major findings are summarized as follows: (1) preschooler's game immersion differed from preschooler's gender. Boy preschooler had higher score than girl preschooler in game immersion. (2) Both boy and girl preschooler's game immersion was negatively correlated with preschooler's behavioral regulation and emotional regulation, maternal rational guidance, limit-setting and affection. (3) The most influential factor on boy preschooler's game immersion was behavioral regulation. On the other hand, the most influential factor on girl preschooler's game immersion was emotional regulation, and the next influential factor was maternal affection. Results of this study indicate that self-regulation enhancement program should be developed and mothers should be more affective with their preschoolers in order to prevent preschoolers' game immersion.

• Korean Journal of Health Education and Promotion
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• v.30 no.2
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• pp.83-92
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• 2013

Objectives: The purpose of this study was to investigate factors affecting the drinking behavior in high school students. Methods: There were 620 subjects who were first and second graders of seven high schools in Daegu. This study used Sinhaengwoo (1998)'s drinking behavior scale, Rowlison and Felner (1988)'s stress scale, Kovacs (1981)'s children's depression inventory, Rosenberg (1965)'s self-esteem scale. The data were analyzed by descriptive statistics, Pearson's correlation coefficient, and stepwise multiple regression using SPSS/win 18.0 program. This study was approved by the Institutional Review Boards (IRB) of the Keimyung university hospital(No. 12-112). Results: The mean score for drinking behavior in high school students was 23.1points. Factors influencing drinking behavior in high school students were identified as self-esteem(t=-3.67, p<.001), stress(t=6.79, p<.001), school types(t=4.02, p<.001), sex(t=-3.67, p<.001). These factors explained 27% of drinking behavior reported by high school students. Conclusion: The results indicate which factors are majors influencing drinking behavior in high school students. Therefore, self-esteem enhancement could be considered as an effective strategy to reduce the drinking behavior in high school students.

• The Korean Journal of Health Service Management
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• v.7 no.4
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• pp.65-79
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• 2013

The purpose of this study was to reveal relationship between positive illusions and oral health promotion behaviors. Positive illusions was composed of positive self-perception, exaggerated sense of personal control, and unrealistic optimism. We thought these factors affect to the oral health behaviors. For this study, 307 collegians in Ulsan, Yangsan are participated in this study. The data was subjected to confirmatory factor analysis and structural equation modeling with SPSS 18.0, AMOS 18.0. In conclusion, we obtained the next results. First, positive illusions has a statistically significant with oral health promotion in correlation analysis(p<0.05). Second, Structural equation modeling fit index was well fitted as $X^2$=100, df=112, P=0.893, RMR=0.021, GFI=0.969, AGFI=0.943. Only positive self-perception and exaggerated sense of control has a statistically significant(P<0.05). Third, the group of the highest positive illusions has a statistically significant in all factors(P<0.05), the other hand, the group of the lowest positive illusions has not statistically significant in all factors(P>0.05). So, as this results we concluded that the self-confident or activated persons were very well performed in oral health promotion behaviors.

• The Journal of Information Systems
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• v.23 no.1
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• pp.53-71
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• 2014

The center of networking is moving toward mobile from PC based computing environment. The number of smartphone users are increasing rapidly today. One of the most popular smart phone applications is mobile SNS such as Kakao Story, Facebook, Twitter, Mobile Cyworld, etc. Mobile SNS means social network services based on mobile communication technology. This research focused on mobile SNS usage of married women who have not enough time for face-to-face communication with their friends to enhance their friendship. Married women in their 30s and 40s have lots of things to do like housework and caring their children. Mobile SNS would help their communication in aspect such of free of space and time. Through Mobile SNS married women can reinforce their personal relationship and self-esteem. Social Information Processing Theory (SIP) is an interpersonal communication theory developed by Walther(1992). Once established, online personal relationships may demonstrate the same relational dimensions and qualities as face-to-face relationships. The theory explains how people get to know one another online, without nonverbal cues, and how they develop and manage relationships in the computer-mediated environment. The result of empirical analysis indicates that marred women's Mobile SNS activities reinforce their personal relationship and self-esteem.

• The Journal of Korean Society for School & Community Health Education
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• v.17 no.2
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• pp.57-69
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• 2016

Objectives: This study examined the relationships among career identity, job-seeking stress, self control, and test anxiety in nursing students. Methods: Data were collected through self reported structured questionnaire form nursing students using convenient sampling methods form November 15 to December 10, 2015. The data were analyzed with SPSS/WIN 19.0 using ANOVA, t-test, Pearson correlation, and stepwise multiple regression. Results: Factors that had an influence on test anxiety included job-seeking stress(${\beta}=0.40$ p<0.001), career identity(${\beta}=-0.17$, p=0.010), fourth grade(${\beta}=-0.14$, p=0.020). These factors together explained 25% of the test anxiety in nursing students(F=25.48, p<0.001). Conclusion: The findings of this study indicate that job-seeking stress management strategies and academic career identity enhancement programs should be developed to reduce test anxiety in nursing student and that further study should be done on the effects of such programs.