• Bulletin of the Korean Chemical Society
• /
• v.34 no.2
• /
• pp.553-557
• /
• 2013

The stretching vibration of OH of ice Ih is studied by Car-Parrinello molecular dynamics in regarding the effect of mixed H/D contamination while the vibrational spectrum is considered by velocity-velocity autocorrelations of the sampled ensemble. When hydrogen atoms are immersed randomly into the deuterated ice, a typical vibrational frequency of OH stretching mode is observed to be similar to that from the pure $H_2O$ ice. When focusing on the correlation of isolated neighboring OH stretching, a narrower and blue shifted peak is observed at the high frequency range as a result of the screening from the complex many body correlations by $D_2O$ environment. It is also specifically related to the symmetric intermolecular correlations between neighboring OH stretching modes. More enhanced high frequency range can be explained by the expansion of such two body correlations to collective many body correlations among all possible OH stretching modes. This contribution becomes important when it involves in chemical interactions via excitation of such vibrational states.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2010.05a
• /
• pp.967-969
• /
• 2010

In this paper, we describe the effect of information and communication ethics education to check cyber crime on teenagers. For 97 high school students, we implement the information and communication ethics education about the cyber crime and its corresponding legal knowledge during 30 minutes. And then we analyze the effect of the education focusing on the legal knowledge by comparing the students' pre- and post-questionnaire responses.

• Journal of Welding and Joining
• /
• v.20 no.1
• /
• pp.69-75
• /
• 2002

This study investigated the effect of the system parameters on penetration depth measurement using infrared temperature sensing system. The distance from focusing lens to detector was varied to diminish the error in measuring weld bead width. The effect of bead surface shape on measured surface temperature profile was evaluated using specimen heated by electric resistance. The measuring distance from laser beam was changed to optimize the measuring point. The results indicated that the monitoring device of surface temperature using infrared detector array was applicable to real time penetration depth control.

• Structural Engineering and Mechanics
• /
• v.34 no.2
• /
• pp.189-211
• /
• 2010

The behaviour of a reinforced concrete tension member is governed by the contribution of concrete between cracks, tension stiffening effect. Under highly repeated loading, this contribution is progressively reduced and the member response approximates that given by the fully cracked member. When focusing on the unloaded state, experiments show deformations larger than those of the naked reinforcement. This has been referred to as negative tension stiffening and is due to the fact that concrete carries compressive stresses along the crack spacing, even thought the tie is subjected to an external tensile force. In this paper a cycle-dependent approach is presented to reproduce the behaviour of the axially loaded tension member, paying attention to the negative tension stiffening contribution. The interaction of cyclic bond degradation and time-dependent effects of concrete is investigated. Finally, some practical diagrams are given to account for the negative tension stiffening effect in reinforced concrete elements.

• Journal of Information Technology Applications and Management
• /
• v.27 no.6
• /
• pp.117-139
• /
• 2020

This research analyzes the factors that affect the consumers' participation of the internet-only banks, and suggests effective financial sales strategies and methods to attract more users. Through prior research review and interviews with experts, the factors affecting the consumers to sign up for the internet banks are identified. The actual user data from the internet banks are used for the analysis, providing more systematic and credible results. The research shows that social media buzz positively affects the user growth, proving Granger Causality relation of increasing social media buzz on K Bank increases K Bank users. The research also shows that marketing activities noticeably impacts K Bank's positive user growth. On the other hand, the event of Kakao Bank's grand opening shows negative effect. The results from the research validates the need for periodical monitoring process of social media buzz. Moreover, the research proves that the integrated analysis of social media buzz and marketing effect is also essential.

• Journal of Semiconductor Engineering
• /
• v.1 no.3
• /
• pp.88-98
• /
• 2020

As biosensors are widely used in the medical field, flexible devices compatible with live animals have aroused great interest. Especially, significant research has been carried out to develop implantable or skin-attachable devices for real-time bio-signal sensing. From the device point of view, various biosensor types such as field-effect transistors (FETs) and multi-electrode arrays (MEAs) have been reported as diverse sensing strategies. In particular, the flexible FETs and MEAs allow semiconductor engineering to expand its application, which had been impossible with stiff devices and materials. This review summarizes the state-of-the-art research on flexible FET and MEA biosensors focusing on their materials, structures, sensing targets, and methods.

• Journal of Urban Science
• /
• v.11 no.1
• /
• pp.59-68
• /
• 2022

This study, the meaning of historical and cultural content utilization in urban regeneration was examined and in the process, the causal relationship between each variable was verified through path analysis among physical, cultural, social, and economic factors. The purpose of this study is to find the main variables of historical and cultural content urban regeneration projects in which the moderating effect of economic factors and demographic characteristics, which are mediating effects, have a significant effect on resident participation and life satisfaction of local residents. Furthermore, by presenting a more integrated and effective urban regeneration policy plan, it is intended to ultimately contribute to the vitalization and direction of urban regeneration.

• Research in Community and Public Health Nursing
• /
• v.33 no.1
• /
• pp.53-62
• /
• 2022

Purpose: This study explored the effects of the elderly group's digital literacy and health empowerment on communication with doctors, considering moderating effect of health beliefs about chronic diseases. Methods: A one-on-one interview survey was conducted with 500 older adults in South Korea. The main variables were digital literacy, health empowerment, communication with doctors, and health belief of chronic diseases. Results: The interaction effect between health empowerment and susceptibility, and health empowerment and perceived barrier were significant. Conclusion: Communication with doctors greatly increased when the elders had high levels of health empowerment and low levels of susceptibility. Also, communication with doctors greatly increased when the elders had high levels of health empowerment and low levels of perceived barriers.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2021.07a
• /
• pp.415-416
• /
• 2021

본 연구에서는 한국복지패널 15차년도(2020년) 패널 데이터를 활용하여 장애노인의 삶의 만족에 영향을 미치는 소득지위, 우울에 영향력을 분석하고, 소득지위와 삶의 만족 간에 사회적 지지의 매개효과와 우울과 삶의 만족 간에 사회적 지지의 조절된 매개효과를 검증하고자 한다.

• Management & Information Systems Review
• /
• v.31 no.1
• /
• pp.23-44
• /
• 2012

This study is about self-leadership, which is leadership that we exercise over ourselves. In this study, I analyzed the effects of self-leadership on students' focusing on their goal commitments and self-efficacy's role as link between self-leadership and students' focusing on their goal commitments. In order to accomplish research purposes, I conducted a survey of 300 University students in Busan and carry out empirical study of 276 University students. As a result of analysis, I draw conclusions as follows. First, Hypothesis1 is adopted because the research results show that self-leadership has positive effects on students' focusing their goal commitments. Second, Hypothesis2 is adopted because the research results show that self-leadership has positive effects on students' self-efficacy. Third, Hypothesis3 is adopted because the research results show that self-efficacy has positive effects on student's focusing on their goal commitments. Forth, I conducted Mediating regression to see if self-efficacy plays a mediator role between self-leadership and student's focusing on their commitments. And the results show that behavior-focused strategies, constructive thought pattern strategies and natural reward strategies have perfect mediating effects. This study shows the importance of building self-leadership for young generations to be effective leaders of themselves.