• Journal of the Korean Society of Food Science and Nutrition
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• v.29 no.3
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• pp.531-536
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• 2000

뽕나무 (Morus alba) 및 꾸지뽕나무(Cudrania tricuspidata) 잎으로부터 추출한 수용성 물질을 0.5% 콜레스테롤 투여 식이에 1%(w/w) 수준으로 첨가하여 각 조직에서의 지질 과산화물 생성정도를 나타내는 TBARS 측정법으로 항산화 활성을 검토하였다. 흰쥐의 체중 및 식이 섭취량은 실험군 간의 유의적인 차이는 없었다. 간장 및 뇌 조직 중량은 뽕잎 추출물군에서 증가하였다. 신장의 지질 과산화물 함량은 대조군에 비해서 뽕잎 추출물군에서 유의적으로 감소하였다. 뇌 및 심장의 지질 과산화에서 유의적으로 감소하였다. 뇌 및 심장의 지질 과산화물 함량은 대조군에 비교해서 꾸지뽕잎 추출물군에서 유의적으로 증가하였다. 간장 및 비장의 경우에는 각 실험군 간에 유의적인 차이가 없었다. 각 조직의 microsomes 분획으 지질 과산화물은 심장과 비장에서 뽕잎 및 꾸지뽕잎 추출물군에서 감소하였으나, 다른 조직에서는 현저한 차이가 없었다. 한편, 각 조직의 microsomes 분획을 얻어서 Fe2+/ascorbate로 지질 과산화물을 유도하기 위하여 37$^{\circ}C$에서 한시간 반응을 시킨 결과, 뽕잎 및 꾸지뽕잎 추출물군에서 약 절반 정도 감소하였으며, 상대적 증가량은 뇌조직 microsomes에서 현저하였다. 본 실험의 결과 신장조직 및 간장 microsome막 지질 과산화물 함량은 뽕잎 및 꾸지뽕잎 수용성 추출물에 의해 감소되었으며, 뇌 및 심장조직의 지질 과산화물 함량은 꾸지뽕잎 수용성 추출물에 의해 증가됨으로써 봉잎 추출물간의 차이를 나타내었다.

• Korean Chemical Engineering Research
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• v.60 no.3
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• pp.356-362
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• 2022

Research related to hydrogen technology is being actively conducted around the world. Korea is also making great efforts to develop technology to leap forward as a hydrogen economy powerhouse. In particular, the world's No. 1 hydrogen vehicle penetration rate is proof of this. However, the construction of hydrogen refueling stations is being delayed. The biggest delay factor is the public opposition. As such, policies without public support cannot be successfully implemented and are not sustainable. Therefore, this study intends to analyze the factors affecting the acceptability of hydrogen refueling stations in favor of and against them. As a research method, the basic factors affecting acceptability were identified by reviewing previous studies, and a questionnaire was designed and investigated based on the established factors. The validity and reliability of the questionnaire were verified, and the hypothesis was verified through correlation analysis. And, using structural equation modeling, a factor model was developed on the acceptability of hydrogen refueling stations. As a result of the study, acceptability defined private acceptability and public acceptability. In the case of private acceptability, it was confirmed that the higher the attitude toward the environment, the higher the level of knowledge about the hydrogen charging station, and the lower the degree of feeling the risk of the hydrogen charging station, the higher the acceptability. In the case of public acceptability, it was confirmed that the higher the benefit, the better the attitude toward the environment, and the lower the risk-taking characteristics of the individual, the higher the acceptability. Therefore, in this study, based on the potential factors verified in previous studies, the main factors affecting the acceptance on hydrogen refueling stations were identified. And the acceptance model was developed using structural equation modeling. This study is expected to provide basic data to seek ways to improve the acceptance of public when implementing national policies such as hydrogen refueling stations, and to be used analysis data for scientific communication.

• Journal of Korea Entertainment Industry Association
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• v.15 no.6
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• pp.179-191
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• 2021

Social anxiety continues due to the emergence and spread of covid-19 infections. In this situation, false information related to the covid-19 infection is distributed through SNS in the form of fake news, which is a stumbling block to overcoming the national crisis. This study tried to present a theoretical basis for the establishment of policies for the regulation and eradication of fake news circulated through SNS by examining the effect of social anxiety on the fake news acceptance attitude by focusing on the use degree of SNS. For this study, a survey of 380 university students in the Seoul metropolitan area was conducted, and 336 data collected among them were analyzed as SPSS 25.0 and AMOS 23.0. According to the analysis results, social anxiety has a positive effect on the fake news acceptance attitude and the use degree of SNS, also the use degree of SNS has a positive effect on the fake news acceptance attitude. In addition, social anxiety has been confirmed to have a positive effect on fake news acceptance attitude through the use degree of SNS. These results empirically confirm the relationship between social anxiety, fake news acceptance attitude, and the use degree of SNS.

• The Journal of the Korea Contents Association
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• v.19 no.7
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• pp.393-401
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• 2019

In this study, based on the general reasoning that the higher the resolution of the HMD, the greater the presence and immersion of the audience and the greater the presence experience, the difference in the presence experience according to the resolution of the virtual reality device is verified empirically Presence effect. To do this, 300 college students were included in the population, and VR simulations of the Oculus store were conducted using HMD and mobile devices with different resolutions (HD, FHD, WQHD) as stimuli. As a result, there was a significant difference in the presence experience of the audience according to the resolution of the mobile device attached to the virtual reality HMD, and the presence effect had a significant influence on the awakening. On the other hand, no significant influence was found in the effect of emotion. Therefore, we can prove a general reasoning hypothesis that the higher the resolution of the virtual reality device, the greater the presence experience of the audience. However, since the confounding effect and the impression are contradictory in the presence effect side, additional experiments research is required.

• Journal of Satellite, Information and Communications
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• v.11 no.3
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• pp.43-50
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• 2016

This study quantitatively measured the impact of blended learning with smart devices for learning satisfaction. It is targeted in specialized domestic company with IT Service which build smart learning systems and utilize for employee training. Specifically, it empirically analyzed that learning attitude(Self-efficacy, Self-innovativeness, Perceived usefulness, Perceived ease of use) with smart devices affect acceptance of smart learning and offline face-to-face learning satisfaction. As a result, the learning attitude of the smart learning gave a positive effect on the acceptance of the smart learning and then acceptance of the smart learning gave a positive effect on offline face-to-face learning satisfaction. Additionally learning the attitude of the smart learning even gave a positive impact, as well as the acceptance of smart learning experience in offline training. It imply that this variables of smart-learning attitude affect the self-directed learning and positive learning experience.

• Journal of Broadcast Engineering
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• v.21 no.5
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• pp.739-748
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• 2016

This study quantitatively measured the impact of blended learning with smart devices for learning satisfaction. It is targeted in specialized domestic company with IT Service which build smart learning systems and utilize for employee training. Specifically, it empirically analyzed that learning attitude(Self-efficacy, Self-innovativeness, Perceived usefulness, Perceived ease of use) with smart devices affect acceptance of smart learning and offline face-to-face learning satisfaction. As a result, the learning attitude of the smart learning gave a positive effect on the acceptance of the smart learning and then acceptance of the smart learning gave a positive effect on offline face-to-face learning satisfaction. Additionally learning the attitude of the smart learning even gave a positive impact, as well as the acceptance of smart learning experience in offline training. It imply that this variables of smart-learning attitude affect the self-directed learning and positive learning experience.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.247-260
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• 2022

In order to advance theoretical and practical understanding of innovative behaviors and affective commitment to change, this study investigated the relationship among innovation supporting organizational culture, decentralized structure, acceptance of organizational change, and affective commitment to change and tested the mediating effect of acceptance of organizational change in the relationship. Data were collected from 261 employees at H corporation and analyzed to test suggested research hypotheses using SPSS 20.0 and AMOS 20.0. The results are as follows: First, it is found that innovation supporting organizational culture influences positively acceptance of organizational change and affective commitment to change. Second, results show that decentralized structure influences positively acceptance of organizational change, but does not influence innovative behavior. Third, it is found that acceptance of organizational change influences positively affective commitment to change and innovative behavior. Fourth, it is also found that acceptance of organizational change mediates partially the relationship between innovation supporting organizational culture and affective commitment to change and acceptance of organizational change mediates completely the relationship between decentralized structure and affective commitment to change. With these findings, it is confirmed that innovation supporting organizational culture and decentralized structure influence positively affective commitment to change and innovative behavior through acceptance of organizational change. Limitations and suggestions were discussed.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.352-360
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• 2014

This study is based on the results from the previous one. It proved that perceived usefulness, perceived ease of use, perceived service quality, perceived risk are the independent variables. Research model and hypotheses by using the use intention and recommended intention as the dependent variable. The results were as follows: First, perceived usefulness and perceived service quality have positive effects on use intention and recommended intention. Second, perceived risk has negative effects on use intention and recommended intention. Third, the perceived ease of use has positive effect on use intention in Social Commerce, in contrast, it has no significant effect on use intention in Online Shopping. The results of this study presented the proposal for operators at social commerce area.

• Journal of Venture Innovation
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• v.4 no.3
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• pp.89-108
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• 2021

This study purposed to investigate the double mediating effect of the resistance and the job stress between the acceptance and the flourishing in organizational change. The survey has executed on 300 employees. The acceptance of organizational change was positively related to the flourishing, negatively to the resistance of organizational change and the job stress. The resistance of organizational change was positively related to the job stress, negatively to the flourishing. The job stress was negatively related to the flourishing. The resistance of organizational change was meditating the acceptance to change and the job stress, and the acceptance to change and the flourishing. The job stress on the acceptance to change and the flourishing partially mediated as well as the resistance to change and the flourishing. The resistance to change and the job stress double meditated the acceptance to change and the flourishing. The implications, limitations of this study for future research were discussed.

• Journal of Convergence for Information Technology
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• v.9 no.6
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• pp.97-103
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• 2019

This study is to find ways to improve the life satisfaction of people of disability through disability acceptance and self-efficacy. 1,505 out of 4,400 of Penal Survey of Employment for the Disabled 2nd Wave were applied for the study. Regression analysis, descriptive statistics and correlation analysis by SPSS 23.0 were applied. The study show that the disability acceptance had a positive effect on self-efficacy and life satisfaction. Self-efficacy influenced positive effect to life satisfaction and played a mediating role between disability acceptance and life satisfaction. Base on the result, this study made suggestions for necessity to operate rehabilitation and Psychological cognition integral programs and to find and attend the various programs for people of disability.