• JSTS:Journal of Semiconductor Technology and Science
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• 제14권5호
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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.

• 천문학회보
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• 제41권1호
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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.

• 의학교육논단
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• 제14권1호
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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.

• 한국문헌정보학회지
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• 제52권2호
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• pp.143-164
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• 2018

본 연구의 목적은 공공도서관 이용자들이 지향하는 가치관이 그들의 공공도서관 서비스 이용과 어떤 관계가 있는지 밝히는 것이다. 개인의 가치관은 Schwartz의 보편적 가치이론에서 개발된 PVQ-21의 총 21문항을 사용하여 측정하였다. 연구방법으로 설문조사법을 사용하여 전국의 18세 이상 성인 1,000명으로부터 수집한 설문응답을 다차원척도법, t-검증, 다중상관관계분석법으로 분석하였다. 분석 결과, 현재 우리나라 공공도서관은 공동체나 자신을 둘러싼 사회 공동의 발전을 가치있게 생각하는 개인들 보다는 자기 자신의 개인적 흥미와 새로움을 발견하고 즐거움을 추구하려는 가치가 강한 개인들에 의해 이용되는 경향이 강한 것으로 나타났다. 공공도서관이 제공하는 서비스가 독서, 교육지원 등 개인적 성격이 강한 활동이 주류를 이루므로, 공동체적 성향보다 개인주의적 성향이 강한 개인이 도서관을 더 활용하도록 기여하고 있는 것으로 파악되었다. 본 연구결과는 그간 공공도서관 이용을 설명하는 변인으로 연구된 바 없었던 개인의 가치관을 조사하였다는데 의의가 있다. 본 연구 결과는 개인의 가치 지향성과의 상관성 속에서 파악된 공공도서관의 현재의 기능과 이용을 이해하는데 기여한 동시에, 본 연구에서 상대적으로 약하게 드러난 공동체적 성격에 대해 더 세심히 살펴 볼 필요성을 제기해 준다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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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.

• 한국생활과학회지
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• 제23권2호
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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.

• 보건교육건강증진학회지
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• 제30권2호
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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.

• 보건의료산업학회지
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• 제7권4호
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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.

• 한국정보시스템학회지:정보시스템연구
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• 제23권1호
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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.

• 한국학교ㆍ지역보건교육학회지
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• 제17권2호
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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.