• 한국진공학회지
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• 제7권s1호
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• pp.183-189
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• 1998

A new computer simulation method for film growth, the kinetic Monte Carlo simulation in combination with the results obtained from molecular dynamics simulation for the transient process induced by deposited atoms, was developed. The behavior of energetic atom in Au/Au(100) thin film deposition was investigated by the method. The atomistic mechanism of energetic atom deposition that led to the smoothness enhancement and the relationship between the role of transient process and film growth mechanism were discussed. We found that energetic atoms cannot affect the film growth mode in layer-by-layer at high temperature. However, at temperature of film growth in 3-dimensional mode and in quasi-two-dimensional mode, energetic atoms can enhance the smoothness of film surface. The enhancement of smoothness is caused by the transient mobility of energetic atoms and the suppression for the formation of 3-dimensional islands.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.351-354
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• 2003

Triaxial behavior of concrete cylinders wrapped with FRP material has been investigated for the increase of concrete strength by lateral confinement. Using the model by Richart et al., a modified empirical equation was proposed to estimate the strength of concrete cylinders with FRP confinement based on the linear relationship between the concrete strength and lateral confining pressure. From the experimental stress-strain result of the cylinder specimens having similar confining pressure, less ductility was observed for higher strength concrete. But the compressive strength of the specimen was linearly increased by lateral confinement. The confinement effectiveness coefficient for the strength enhancement of the cylinders by FRP wrap was obtained as 2.27 from the regression analysis.

• 유통과학연구
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• 제12권9호
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• pp.83-93
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• 2014

Purpose - This study attempted to identify any influencing relationships, between the antecedent variables and the members' innovative work behavior, which were expected to influence organizational performance based on the extended theory of planned behavior (ETPB). Research design, data, and methodology - The survey was conducted on SMEs in Seoul and its metropolitan area. A total of 158 copies of effective questionnaires were used and were analyzed through correlation analysis, regression analysis, and multiple regression. Results - Self-efficacy, value, intrinsic motivation, and self-enhancing bias have been found to have a positive relationship with innovative work behavior. In addition, transformational leadership was found to moderate the existence of a statistically significant negative influence between value, intrinsic motivation, and innovative work behavior. Conclusions - The results suggest that leaders will be successful in winning members' trust through conducting their behaviors in accordance with the applicable ethical and moral standards and through their fair, transparent, and legitimate management practices with an attitude of 'taking the initiative and setting an example', and this will help solve such problems.

• 약학회지
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• 제36권5호
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• pp.449-454
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• 1992

The effect of radioprotective ginseng protein fraction on DNA repair capacity was determined by measuring the amount of $^{3}H-thymidine$ incorporated into DNA in the process of repair synthesis for UV damaged DNA. CHO-Kl cells were prepared whose semiconservative replication was inhibited by trimethylpsoralen plus near-UV(PUVA) treatment. When the cells were exposed to UV light alone, the DNA repair capacity was increased at first and then decreased as UV dose increased. However, when the ginseng fraction was treated to the cells, the DNA repair capacity was kept increasing regardless of UV dose increment. When the concentration of protein contained in the added fraction was increased gradually, the repair capacity was also increased almost linearly showing dose-response relationship of the effect. These results suggest that the enhancement of DNA repair capacity of the cell can be one of the mechanisms of radioprotection by the ginseng fraction.

• Biotechnology and Bioprocess Engineering:BBE
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• 제6권5호
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• pp.332-336
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• 2001

When parental Chinese hamster ovary (CHO) cell clones that are capable of producing thrombopoietin (TPO) were subjected to high methotrexate (MTX) concentrations, clonal variations in cell growth were apparent. In the clones that had no significant enhancement in specific TPO productivity (q$\_$Tpo/)when a higher level of MTX was administered, their growth was not depressed significantly nor their cell size changed significantly. On the other hand, those clones that showed a significant-enhancement in q$\_$Tpo/ at higher a MTX dosage, cell growth was depressed initially but recovered during successive sub-cultures. Furthermore, their cell size increased, which suggested that changes in cell size may be indicative of an enhanced q$\_$Tpo/. When the enhancement of the q$\_$Tpo/ of 9 clones after a high MTX dosage was plotted against the extent of the increase of their size, there was a linear correlation (γ$^2$=0.80, p<0.001, ANOVA), which suggested that an enhancement of q$\_$Tpo/ after high MTX administration can be measured by the increase in their cell size. Taken together, our data demonstrate that the selection of amplified CHO cell clones with enhanced q$\_$Tpo/ can be done upon their increased size and growth pattern. This facilitates the development of highly productive recombinant CHO cell lines.

• 한국응용과학기술학회지
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• 제38권5호
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• pp.1255-1264
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• 2021

본 연구는 코로나-19 환경에서 소비자가 인식하는 골프 어플리케이션(App)특성이 몰입정도와 소비행동에 관하여 인과 관계(SEM)를 적용하여 골퍼들이 인식하는 어플리케이션 서비스를 탐색하고, COVID-19 이후 골프산업을 예측하기 위한 기초자료를 제공하고자 하였다. 이를 위해 2021년 6월 1일 ~ 8월 10일까지 표본계획에 의해 모바일 서베이(URL)를 사용하여 총 235명을 분석에 사용했다. 결과를 도출하였다. 첫째, 어플리케이션의 이동성, 신뢰성 특성이 몰입증진에 통계적으로 유의미한 정(+)의 영향을 미치는 것으로 가설이 채택되었다. 둘째, 몰입증진은 소비행동에 통계적으로 유의미한 정(+)의 영향을 미치는 것으로 가설이 채택되었다. 마지막으로 어플리케이션의 정보성, 이동성 특성이 소비행동에 통계적으로 유의미한 정(+)의 영향을 미치는 것으로 가설이 되었다.

• 대한간호학회지
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• 제50권5호
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• pp.728-736
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• 2020

Purpose: This study aimed to identify the relationship between workplace violence and turnover intention, and the mediation effect of resilience on the relationship in hospital nurses. Methods: This was a cross-sectional study. A total of 237 registered nurses were recruited from three hospitals in South Korea from April to May 2019. Participants were invited to complete self-reported questionnaires that measure workplace violence, turnover intention, resilience, and demographic information. The data obtained were analyzed using multiple regression and a simple mediation model applying the PROCESS macro with 95% bias-corrected bootstrap confidence interval (5,000 bootstrap resampling). Results: After controlling demographic covariates, workplace violence significantly accounted for the variance of turnover intention. It was also demonstrated that resilience partially mediated the relationship between workplace violence and turnover intention in hospital nurses. A 73.8% of nurses had experienced workplace violence (such as attack on personality, attack on professional status, isolation from work, or direct attack). Conclusion: Workplace violence directly influences turnover intention of nurses and indirectly influences it through resilience. Therefore, hospital administrators need to develop and provide a workplace violence preventive program and resilience enhancement program to decrease nurses' turnover intention, and leaving.

• 한국간호교육학회지
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• 제15권2호
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• pp.293-301
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• 2009

Purpose: This study was conducted to investigate the relationship between self-esteem and coping skills among middle school students. Method: The participants were 674 students in three middle schools in GyeongGi-Do. The data were collected from June 10 to 20, 2005. The instruments used were the Rosenberg Self-esteem Scale and the Ways of Coping Checklist. The data were analyzed using the SPSS-Win 12.0 program. Result: Self-esteem showed a significant positive correlation with positive coping skills (r= .162. p= .000). As for the positive coping skills, there was a significant difference by grade (F= 4.69, p= .010), relationship with parent (F=4.036, p= .02), and relationship with siblings (F=3.902, p= .02). As for the negative coping skills, there was a significant difference by grade (F=3.05, p= .04), condition of living with parents (F=3.559, p= .02), economic status (F=3.736, p= .02), relationship with sibling (F=3.408, p= .03), and troubling matters (F=5.422, p= .005). Conclusion: Positive coping skills may be effective for adjustment because they positively related to self-esteem. Self-esteem and coping skills should be considered when an adolescent's mental health enhancement program is designed.

• Asia pacific journal of information systems
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• 제15권2호
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• pp.23-49
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• 2005

Recently, owing to the rapid growth of the Internet and information technology, the growth of the Internet shopping mall has been truly phenomenal. In the Internet shopping mall, as the customers can't touch a product directly, trust is important factor in purchasing intention. Many researchers proposed direct relationship between the customer trust and the purchasing intention. We supposed that there would be some factors that could be the consequences of trust in on-line purchasing decision, and the factors could be also the determinants of purchasing intention and decision for the Internet shopping mall customers. We found out that there were indirect relationship between them through the customer's attitude, involvement, and royalty to the site rather then directly related. Particularly, the correlation between the site attitude and the purchasing intention was high, but the direct effect was not significant. The site attitude was indirectly related to the purchasing intention through the customer involvement and loyalty. This means that the customer relationship involvement and loyalty enhancement strategies are more important for the success of Internet shopping mall.

• 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.