• Journal of Korea Port Economic Association
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• v.37 no.3
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• pp.75-91
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• 2021

Due to increased competition in supply side to reduce operational costs, port professionals have experienced extreme pressure, which demanded academicians to develop the model for efficient port operations from the industry perspective. Among many ports in the world, U.S. ports are our primary interest to analyze in our study for its high volume of cargoes transacted in the U.S. ports. We primarily employed DEA (Data Envelopment Analysis) technique to research the productivity of U.S. ports and applied the algorithm of double bootstrapped DEA proposed by Simar & Wilson (2007) to further investigate the driving forces of the performance of U.S. port operations. The external variables employed in our study comprise onDock Rail, Channel Depth, Location, Area, Acres, ForeignCargoRatio, and TEUChange, out of which onDock Rail, Acres, ForeignCargoRatio, and TEUChange were significant. In order to evaluate the effects of methodology selection, we conducted the same analysis applying the Censored model (Tobit) and contrasted the outcomes drawn from the two different techniques. Based on the findings from this work we proposed managerial implications and concluded.

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.412-425
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• 2022

The purpose of this study is to examine the relationship between self-compassion and binge eating and to examine the mediating effects of negative affect and negative urgency. To validify this hypothesis, 441 college and graduate students were measured self-compassion, negative affect, negative urgency, and binge eating. For the collected data, SPSS(23.0) and AMOS(23.0) were used for descriptive statistics, correlation analysis, and analyzing the structural equation model. The results of this study are summarized as follows. First, the correlation analysis showed significant correlations among self-compassion, negative affect, negative urgency, and binge eating. Second, in the relationship between self-compassion and binge eating, negative affect and negative urgency showed serial mediating effects. This means that for college and graduate students, the promotion of self-compassion can reduce binge eating behavior by sequentially reducing negative emotions and negative urgency. Finally based on these results, practical applications of self-compassion in the treatment of binge eating behavior were proposed.

• Journal of Practical Engineering Education
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• v.14 no.2
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• pp.333-339
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• 2022

In this study, we study the effects of note-taking skills on students' academic performance, satisfaction, and concentration, and immersiveness when students are taking online classes. The Cornell note format was used for the note-taking skills. The survey result shows that note-taking skills in online class increase students' diligence, participation, and concentration. We find a strong positive correlation between the number of Cornell note submission and academic performance, and we show that the association between two is a statistically significant by using simple/multiple regression analysis. The multiple regression result shows that one unit increase in the Cornell note submission is associated with the increase in 0.253 midterm score on average. In addition, one unit increase in the Cornell note submission is associated with increase in 0.287 final exam score on average. Further, we conduct bootstrapping regression as a robustness test and show that the results are consistent with the simple/multiple regression results. These analyses show that Cornell note taking skills in online classes can be beneficial for students to improve the quality of their learning.

• The Journal of the Convergence on Culture Technology
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• v.8 no.5
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• pp.17-27
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• 2022

The purpose of this study is to identify the effects of change of social relations due to COVID-19 on life satisfaction and to examine mediating effect of leisure satisfaction in the relationship between change of social relations due to COVID-19 and life satisfaction of older people. This study utilized 2021 Social Survey data and 7,203 older persons aged over 65 years were analyzed. Multiple regression analyses were used for the analyses and significance of mediating effect was tested using bootstrapping methods. Study findings showed that change of social relations due to COVID-19 had a significant effect on life satisfaction of older people. That is, those who experienced increasing distance from neighbors and friends reported lower level of life satisfaction. Also, leisure satisfaction partially mediated the effects of change of social relations due to COVID-19 on life satisfaction. Results of this study suggest that various interventions are needed to prevent a decrease of quality of life of older people in times during which social distancing can be necessary like COVID-19 pandemic.

• Journal of Korean Home Economics Education Association
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• v.34 no.4
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• pp.43-56
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• 2022

This study attempts to analyze the mechanism of the academic engagement of middle schoolers participating in family education in Technology and Home Economics Education (T&HEE), their resilience, and their parent-child relationships. The purpose of this study is to examine the mediating effect of resilience on the association between academic engagement and the parent-child relationship. The participants of the study were 194 middle schoolers in Sejong-si. The data were analyzed using PROCESS macro (Model 4), a method for verifying the mediating effect using bootstrapping. As a result of the study, first, there are significant positive correlations among academic engagement, resilience, and the parent-child relationship. Second, the result shows resilience as a complete mediating effect on the association between academic engagement and the parent-child relationship. These findings suggest the way to improve the relationship of adolescents with their parents is to enhance the middle school learners' resilience by actively participating in family education classes in T&HEE.

• Journal of the Korean Applied Science and Technology
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• v.39 no.2
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• pp.233-245
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• 2022

The purpose of this study is to investigate the psychological well-being of Pilates class participants and their intention to continue exercising by examining the passion for leisure of Pilates participants who continue to exercise while taking risks during COVID-19 pandemic. The subjects were 285 Pilates participants. For data processing, SPSS 21.0 and AMOS 18.0 were used, and frequency analysis, reliability analysis, confirmatory factor analysis, and correlation analysis were conducted. In addition, path analysis was SEM and the bootstrapping method was used to examine the mediating effect of psychological well-being in the relationship between the passion for leisure and intention to continue exercising. First, passionate behavior had a positive effect on psychological well-being. Second, passionate behavior had a positive effect on exercise continuity. Third, psychological well-being had a positive effect on exercise continuity. Fourth, psychological well-being played a partial mediating role in the relationship between passionate behavior and exercise continuity.

• Journal of Digital Convergence
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• v.20 no.3
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• pp.309-316
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• 2022

We aimed to verify the mediating effect of depression on the relationship between burnout and flourishing, and the moderated mediating effect of psychological detachment on the mediating relationship. An online survey was conducted with 300 workers, and the results are as follows. First, significant correlations are found among burnout, depression, flourishing, and psychological detachment. Second, the mediating effect of depression on the relationship between burnout and flourishing was verified. Third, the moderated mediating effect of psychological detachment on the mediating relationship verified. Considering the successive effects of burnout on depression and the loss of flourishing, the necessity of efficient management of burnout became evident. Moreover, the moderating role of psychological detachment implies that the effect of burnout can be reduced to some extent through individual and/or organizational efforts for psychological detachment. It seems necessary to verify the moderating effect in more detail through experimental research in the future.

• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.492-502
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• 2022

This study was to verify the mediated moderation effects of parental neglect on the process where school teacher violence affected depression and suicidal ideation of adolescents. Data of 6,291 middle and high school students from 'research on the actual state of human rights of Korean children and adolescents IV' conducted by National Youth Policy Institute were analyzed. The analyses were carried out with SPSS 18.0 and Process Macro 4.0 using descriptive statistics, t-test, one-way ANOVA, regression analysis, and bootstrapping. The results showed that 1. school teacher violence and depression significantly influenced suicidal ideation of adolescents, 2. depression showed mediating effects on the process where school teacher violence influenced suicidal ideation, 3. parental neglect showed mediated moderation effects on the process where school teacher violence influenced suicidal ideation through depression. The study also suggested the necessity to complement the education and counseling program and the relevant policy for parents and teachers who could affect suicidal ideation of adolescents.

• Journal of Industrial Convergence
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• v.22 no.6
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• pp.61-71
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• 2024

The study aimed to examine the mediating effect of ego resiliency and smartphone dependence in the relationship between children's attachment to mother and happiness. For the purpose, 1,143 research subjects were selected from the 12th data of the Korean Children's Panel surveyed by the Korea Institute of Child Care and Education. As for the analysis methods, frequency analysis, descriptive statistics analysis, and correlation analysis were executed, while the mediating effect was analyzed by applying Process Macro Model Number 4 analysis. The indirect effect of ego resiliency and smartphone dependence were verified by using boot-strapping. The findings are as follows. First, children's attachment to mother was found to increase their happiness. Second, ego-resilience was shown to play a partial mediating role in the relationship between children's attachment to mother and happiness. Third, the effect of children's attachment to mother on happiness was partially mediated by smartphone dependence. Based on the results, the study suggested the various practical programs to improve children's happiness.

• Journal of the Korea Society of Computer and Information
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• v.29 no.7
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• pp.53-71
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• 2024

Generative Artificial Intelligence (AI) has become the focus of societal attention due to its wide range of applications and profound impact. This paper constructs a comprehensive theoretical model based on the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2), integrating variables such as Personal Innovativeness and Perceived Risk to study the key factors influencing enterprises' adoption of Generative AI. We employed Structural Equation Modeling (SEM) to verify the hypothesized paths and used the Bootstrapping method to test the mediating effect of Behavioral Intention. Additionally, we explored the moderating effect of Perceived Risk through Hierarchical Regression Analysis. The results indicate that Performance Expectancy, Effort Expectancy, Social Influence, Price Value, and Personal Innovativeness have significant positive impacts on Behavioral Intention. Behavioral Intention plays a significant mediating role between these factors and Use Behavior, while Perceived Risk negatively moderates the relationship between Behavioral Intention and Use Behavior. This study provides theoretical and empirical support for how enterprises can effectively adopt Generative AI, offering important practical implications.