• Journal of Ginseng Research
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• v.22 no.1
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• pp.43-50
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• 1998

We demonstrated in previous study that protopanaxadiol and protopanxatriol saponins show antinociceptive activity in acetic acid induced writhing test and in the second phase (11-40 min) of formalin test but not tail-flick test. To identify further which ginsenoside has antinociceptive activity among various ginseng saponins, we have investigated antinociceptive effects of several ginsenosides using writhing and formalin test. Ginsenoside Rc, Rd, Re, and Rf induced antinociception in writhing test. These four ginsenosides also induced antinociception in the second phase of formalin (11-40 min) test but these ginsenosides showed a slight antinociception in the first phase (010 min) of formalin test except ginsenoside Rf. The antinociceptive effects induced by the ginsenosides were dose dependent and were not blocked by an opioid receptor antagonist, naloxone. The order of antinociceptive potency was Rd > Rc > Re > Rf in the formalin test. However, these ginsenosides did not show any significant analgesic effects in a tail-flick test. These results suggest that ginsenosides such as Rc, Rd, Re, and Rf inhibit tonic pain rather than acute pain induced by noxious heat. These results also indicate that the antinociceptive activity. Induced by ginsenosides may be one of the actions for pharmacological effects of Panax ginseng.

• Journal of the Korea Society of Computer and Information
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• v.24 no.7
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• pp.161-168
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• 2019

The purpose of this study is to analyze the mediating effects of anger level on the effects of middle school students' school adjustment on smartphone addiction. In order to accomplish the purpose of this study, the following research problems were set up. First, what is the relationship between Chinese smartphone addiction, anger level, and school adjustment of Chinese middle school students? Second, what is the effect of smartphone addiction on middle school students' anger level and school adjustment? Third, what is the mediating effect of the level of anger in the process of affecting the school adjustment to smartphone addiction by Chinese middle school students? The subjects of this study were five city schools and seven municipal schools in J-do, among which 450 students were enrolled from April 23 to May 18, 2018. A total of 439 copies were used for the analysis, except for 11 unexplained questionnaires or unfairly responded to the collected questionnaires. The conclusions based on the results of this study are as follows. First, there are negative correlations between the sub-factors of smartphone addiction and the sub-factors of school adjustment. Among them, tolerance is only positively correlated with the peer relationship. The sub-factors of smartphone addiction have negatively correlated with anger expression, anger control, and anger suppression. Second, the effect of sub-factors of smartphone addiction on the level of anger was 3.6%, and the effect on school adjustment was 4.2%. Third, The anger level of the middle school students affected the school adjustment by the smartphone addiction has a partial mediating effect of 0.8%.

• The Korean Journal of Franchise Management
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• v.10 no.1
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• pp.33-42
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• 2019

Purpose - Since the number of cafés operated by using cultural marketing in Jeju Special Self-Governing Province is increasing, this study emphasizes the necessity of cultural marketing, which is a different strategy of specialty coffee shops, focusing on Jeju Island. The purpose of this study is to investigate the effect of positive effects of service quality and brand image on customer satisfaction through cultural marketing. Research design, data, and methodology - It emphasizes the necessity of cultural marketing of specialty coffee shops, and how the positive effects of service quality and brand image brought through cultural promotion, culture support, cultural support, cultural enterprise influence customer satisfaction. The results of this study are as follows. In order to verify the research hypothesis of this study, Jeju residents who have experience using cultural marketing conducted in coffee shops in Jeju Island are targeted. The cafe in Jeju area, which runs from April 4 to April 14, 2018. A total of 110 copies of the questionnaire were distributed, and the final 100 copies were used as final empirical analysis data. Result - The results of the study are as follows. First, promotion and culture business activities have positive influence on brand image. Second, production and cultural business activities had positive effects. Third, brand image has a positive effect on customer satisfaction. Fourth, service quality has a positive effect on customer satisfaction. Conclusions - The implications of this study are following as: First, if you want to grow into a cultural enterprise in the province by enhancing your brand image, you need to prioritize cultural direction and business direction for cultural companies among sub-factors of cultural marketing. Second, it is necessary to improve the customer satisfaction through the improvement of the brand image considering the composition of the stores in the city, the facilities and the atmosphere, and the consumer tendency such as product and customer age.

• Asia-Pacific Journal of Business
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• v.10 no.1
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• pp.105-116
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• 2019

In this study, there are two research objectives. First, we identified the impact of service quality on customer satisfaction and intention to repurchase in the Internet shopping mall. Second, we tried to analyze the mediating effects of the customer satisfaction on the relationship between service quality and intention to repurchase. Based on past research and theoretical discussions, we developed a research model in terms of service quality and intention to repurchase in the Internet shopping mall. In order to verify our research model, we analyzed 492 survey data of consumers who had experiences in the Internet shopping mall in China. We found that sub-factors of the service quality in the Internet shopping mall have positive effects on customer satisfaction and repurchase intention through the survey data analysis. Among the five factors of service quality in the Internet shopping mall, except assurance, the positive effects of tangibility, responsiveness, empathy and reliability on repurchase intention are statistically significant. In addition, we found mediating effects of customer satisfaction in the Internet shopping mall on the relationship between service quality and intention to repurchase.

• Korean Journal of Childcare and Education
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• v.16 no.6
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• pp.105-122
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• 2020

Objective: The study aimed to examine the impact of a supportive school environment on children's prosocial behavior by investigating the sequential mediating effects of children's self-esteem and happiness. Methods: Results of the study were obtained by analysing data collected from 633 nine-year-old children in the 10th wave of the Panel Study on Korean Children(2017). The data were analyzed by descriptive statistics, correlation analysis and significance of mediated pathways using SPSS 23.0 and PROCESS macro 3.3. Results: First, children's self-esteem did not have mediational effects with respect to a supportive school environment and children's prosocial behavior. Second, children's happiness had mediational effects with respect to a supportive school environment and children's prosocial behavior. Lastly, a supportive school environment affects children's self-esteem, which affects children's happiness, thereby promoting children's prosocial behavior. Conclusion/Implications: In order to promote children's prosocial behavior, we should put emphasis on developing a supportive school environment, and increasing children's self-esteem and happiness. It is important that teachers treat children and classmates treat each other with a warm attitude so that they can value themselves and feel happiness in their lives.

• Journal of the Korean Ceramic Society
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• v.25 no.6
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• pp.704-712
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• 1988

In order to investigate the effect of the second phase on Al2O3 matrix, SiC whisker was dispersed in Al2O3 matrix as a second phase over the content range of 5vol% to 20vol%. To this mixture, Y2O3 or TiO2 powder was added as a sintering additive before isostatically pressing and pressureless sintering at 1800-190$0^{\circ}C$ for 90min in N2 atmosphere. With increasing SiC whisker content, relative densities of composites were decreased and the grain growth of Al2O3 was restricted. When Y2O3 was added as a sintering aid the sintering temperature was 180$0^{\circ}C$, the maximum values of flexural strength, hardness and fracture toughness were 537MPa, 12.1GPa, 3.7MPa.m1/2, respectively. However, when the sintering temperature was elevated to 190$0^{\circ}C$, maximum values of flexural strength, hardness and fracture toughness were 453MPa, 17.5GPa, 4.9MPa.m1/2, respectively. Improved mechanical properties are assumed to be attributed to the crack deflection by the second phase SiC whisker and whisker pullout mechanism.

• Journal of Practical Engineering Education
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• v.12 no.1
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• pp.41-47
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• 2020

This study aims to investigate effects of brain-based learning. 27 primary studies were selected through rigorous search process and analyzed through meta-analytic methods. Research findings are as follows. First, the total effect size was .67. Second, the effect of dependent variables was academic achievement, cognitive domain, and affective domain in order. Third, with respect to types of cognitive domain, the effect was self-regulation, creativity, competence, communication, and research ability in order. Fourth, the effect of affective domains was sociality, learning interest, and subject attitude in order. Fifth, regarding development of cognitive ability, the effect size was combined, brain training, learning environments, and right brain activities in order. Sixth, the effect of learning activities was memory improvement and attention enhancement in order.

• Journal of Practical Engineering Education
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• v.12 no.2
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• pp.363-369
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• 2020

This study intends to examine effects of python education for adolescents. 6 primary studies were chosen through careful search process and investigated through meta-analysis. Research findings were as follows. The total effect size was 0.684. Second, the effect sizes of dependent variables were academic achievement 0.871, cognitive domain 0.625, and affective domain 0.428 in order. Third, for cognitive domain, the effect sizes were self-efficacy 0.833, problem-solving 0.283, computing thinking 0.276, and coding competency 0.251 in order. Fourth, for affective domain, the effect sizes were learning interest 0.560 and programming interest 0.417 in order. Fifth, regarding school level, the effect sizes were middle school 0.851, high school 0.585, and college 0.435 in order. Finally, for subject areas, the effect sizes were mathematics 1.057, design 0.595, information 0.585, and software 0.28 in order.

• Journal of the Korean Applied Science and Technology
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• v.39 no.5
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• pp.701-709
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• 2022

The purpose of this study was to compare the differences according to the visual selection and rotation order during sequential rotational jump for female dancers of a Korean ballet company by classifying them into take-off and landing sections. 10 subjects (age: 26.0±2.9 yrs, height: 163.4±3.3 cm, weight: 46.8±3.6 kg, ballet career: 12.3±5.9 yrs) participated in the study. Using a 3D motion analyzer and a force platform, the height of the body center and the ground reaction force during take-off and landing were measured. According to the visual condition (using both eyes, using left eye, using right eye) and rotation order (first rotation, second rotation), it was analyzed through repeated measurement two-way analysis. Height of the CM was higher in the first jump. In take-off, Fx was lateral force of left foot and medial force of right foot were strong in second rotation, and Fy was forward force was strong in first rotation of right foot. Fz was no significant. In landing, Fy showed backward force was strong when landing the second time from the left foot, and the backward force was strong when using the left sight from the right foot. Fz was strong on the second landing on the left foot and the first landing on the right foot.

• Journal of the Korean Society for information Management
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• v.34 no.1
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• pp.291-316
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• 2017

The purpose of this study was to examine comics library user's behavioral intention using the extended theory of planned behavior. In order to verify the effects of variables, such extended variables as comics likeability and service factor were added to such basic variables of the theory of planned behavior as subjective norm, attitude and behavioral control. Study findings are as follows: user's attitude had the biggest effects on their behavioral intention of reuse of Comics Library, and it was followed by subjective norm, service quality and perceived behavioral control, in order. Comics likeability exceptionally had no direct effects on behavioral intention, but it had indirect effects via the mediation of attitude, subjective norm and perceived behavioral control. And second, comics likeability and service quality had power of explanation for such basic variables as attitude, subjective norm and perceived behavioral control, respectively, thus verifying their effects on behavioral intention as extended variables.