• Journal of Korean Academy of Nursing
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• v.52 no.4
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• pp.421-434
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• 2022

Purpose: This study aimed to examine the effect of parental self-esteem on late school-aged children's media device addiction by mediating marital conflict and children's self-esteem. Methods: This study used data from the 11th (2018) Panel Study on Korean Children. The participants consisted of 1,082 family triads (fathers, mothers, and children). Data were collected using the Rosenberg Self-Esteem Scale, Marital Conflict Scale, and K-Internet Addiction Scale. The data were analyzed using structural equation modeling with SPSS/WIN 27.0 and Mplus 8.7. Results: The final model showed a good fit for the data. Children's media device addiction was directly related to mothers' self-esteem, mothers' marital conflict, and children's self-esteem. Fathers' self-esteem had a significant indirect effect on children's media device addiction by mediating both fathers' and mothers' marital conflict. In addition, mothers' self-esteem had a significant indirect effect on children's media device addiction by mediating mothers' marital conflict. Conclusion: The findings indicates that self-esteem and marital conflict for both fathers and mothers have a significant effect on children's media device addiction. It suggests that more attention might be given to fathers and mothers in developing interventions to prevent children's media device addiction.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.45 no.7
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• pp.1-8
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• 2008

We fabricated flexible electrophoretic display(EPD) driven by organic thin film transistors(OTFTs) on plastic substrate. We designed the W/L of OTFT to be 15, considering EPD's transient characteristics. The OTFTs employed bottom contact structure and used Al for gate electrode, the cross-linked polyvinylphenol for gate insulator, pentacene for active layer. The plastic substrate was coated by PVP barrier layer in order to remove the islands which were formed after pre-shrinkage process and caused the electrical short between bottom scan and top data metal lines. Pentacene active layer was confined within the gate electrodes so that the off current was controlled and reduced by gate electrodes. Especially, PVA/Acryl double layers were inserted between EPD panel and OTFT-backplane in order to protect OTFT-backplane from the damages created by lamination process of EPD panel on the backplane and also accommodate pixel electrodes through via holes. From the OTFT-backplane the mobility was $0.21cm^2/V.s$, Ion/Ioff current ratio $10^5$. The OTFT-EPD panel worked successfully and demonstrated to display some patterns.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.209-215
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• 2023

The untact environment brought about by the global pandemic has emerged as a new driving force for the matured social media market. In the post-coronavirus era, there arises a pivotal need for foundational data to reconfigure the operations and utilization strategies of social media. Using data from the 2022 Korean Media Panel Survey, this study compared sociodemographic and personality factors between social media non-users and users, and examined how these factors influenced social media usage time. The findings indicate differences between social media non-users and users in terms of gender, age, education level, income level, employment status, marital status, openness to experience, conscientiousness, extraversion, and neuroticism. Usage time of social media is influenced by gender, age, income level, employment status, conscientiousness, and agreeableness. These results are anticipated to enhance the understanding of users and their usage behaviors for stakeholders in the social media market as they confront a potential second leap forward.

• Korean Journal of Childcare and Education
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• v.18 no.6
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• pp.21-36
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• 2022

Objective: The present study examined long-term effects of media use during early childhood on grit in middle childhood, focusing on the mediating role of attention problems. Methods: For statistical analysis, the 6th, 7th, and 11th data sets from the Panel Study on Korean Children were used. A total of 1,352 cases were finally selected. Descriptive statistics analysis, correlation analysis, path analysis, and bootstrapping were conducted. Results: The results showed that the use of media for educational purposes in early childhood did not have a significant effect on attention problems and grit. However, when the media use time for play in early childhood was longer, levels of attention problems in early childhood were higher and levels of grit in middle childhood were lower. The mediating effect of attention problems on the relationship between media use time for play of young children and grit of middle childhood was significant. Conclusion/Implications: Findings of the present study suggest that the use of media for play during early childhood needs to be carefully monitored because it can have a negative effect on attention and grit development.

• Journal of Intelligence and Information Systems
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• v.29 no.3
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• pp.317-340
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• 2023

In a business context, ESG is defined as the use of environmental, social, and governance factors to assess a firm's progress in terms of sustainability. Social media has enabled the public to actively share firms' good and/or bad deeds, increasing public interest in ESG management. Therefore, this study aimed to investigate the association of firm performances with the respective sentiments towards each of environmental, social, and governance activities, as well as comprehensive ESG sentiments, which encompass all environmental, social, and governance sentiments. This study used panel regression models to examine the relationship between social media ESG sentiment and the Return on Assets (ROA) and Return on Equity (ROE) of 143 companies listed on the KOSPI 200. We collected data from 2018 to 2021, including sentiment data from a variety of social media channels, such as online communities, Instagram, blogs, Twitter, and other news. The results indicated that firm performance is significantly related to respective ESG and comprehensive ESG sentiments. This study has several implications. By using data from various social media channels, it presents an unbiased view of public ESG sentiment, rather than relying on ESG ratings, which may be influenced by rating agencies. Furthermore, the findings can be used to help firms determine the direction of their ESG management. Therefore, this study provides theoretical and practical insights for researchers and firms interested in ESG management.

• Korean Journal of Childcare and Education
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• v.13 no.6
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• pp.163-179
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• 2017

Objective: The purposes of this study are to test a direct effect of mother-child interaction and to examine the mediating effect of children's smart media use on a child's sleeping hours. Methods: We analyzed the longitudinal data of 1,494 children from the $6^{th}$ panel study of Korean children collected by the Korea Institute of Child Care and Education in 2013, which examined 5-year-old children. The main analysis method was Structural Equation Modeling (SEM). Results: The study results showed that mother-child interaction had a direct effect on the child's sleeping hours. Children's smart media use also directly influenced the child's sleeping hours. In regard to mediation, the results revealed that children's smart media use mediated the relationship between mother-child interaction and child's sleeping hours. Conclusion/Implications: Bidirectional mother-child interaction and the degree of smart media use played an important role in children's sleeping hours. This study suggests policy and practical implications in order to retain children's healthy sleeping hours.

• Journal of the Korean Society of School Health
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• v.29 no.2
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• pp.63-70
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• 2016

Purpose: The purpose of this study was to find the factors influencing adolescents' adult media engagement. The study is based on Agnew's General Strain Theory (GST) and a micro-systemic perspective. Methods: The study examined 479 middle school freshmen who participated in the fourth wave of the Korean Children & Youth Panel Survey (KCYPS) conducted by National Youth Policy Institute. Data were analyzed through descriptive statistics, factor analysis, and reliability analysis using SPSS 22.0 Ver. Also, hypothesis testing was performed via covariance-based structure equation modeling (CB-SEM) using Amos 21.0 Ver. Results: Strain factors had positive effects on adolescent depression, and depression had a positive effect on adult media engagement. Also, cell-phone dependency had a positive mediation effect between depression and adult media engagement. Conclusion: The study's result identified the factors affecting adult media engagement. Therefore, we suggest intervention programs considering adolescents' strains, depression and cell-phone dependency to improve their health.

• Human Ecology Research
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• v.62 no.3
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• pp.573-583
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• 2024

Smart devices have become an essential part of human life; however, excessive dependency on these devices has become a serious issue for both children and adults. In this study, a research model was developed which hypothesized that mothers' smartphone addiction influences children's media dependency, and that this effect is sequentially mediated by mothers' work-family strains and parental monitoring. To test this hypothesis, an analysis of data from the 13th Wave of Panel Study on Korean Children (PSKC), conducted in 2020, was performed. The data were collected from 726 children (359 boys, 367 girls) with an average age of 12.23 years (SD=.30). The analysis was conducted using SPSS 27.0 and Process MACRO Ver. 4.2. The results were as follows. Maternal smartphone addiction increased mothers' work-family strains, which in turn lowered the level of parental monitoring, which was associated with an increase in children's media dependency. Furthermore, mothers' smartphone addiction had a partial mediation effect on children's media dependency. In sum, this study revealed that the mothers' smartphone addiction increased children's media dependency, and this effect was sequentially mediated by an increase in mothers' work-family strains and a decrease in parental monitoring. This study verifies that mothers' smart device usage as well as their working environment has a significant effect on children's media dependency. Therefore, to increase parental monitoring of children's media usage, mothers' work-family strains need to be reduced.

• Asia-Pacific Journal of Business
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• v.15 no.2
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• pp.53-70
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• 2024

Purpose - The purpose of this paper is to examine whether firms use social media to disseminate good news to various stakeholders thereby enhancing corporate social performance (CSP). Design/methodology/approach - This study collected data from various databases such as Korea Economic Justice Institute (KEJI) Index, VALUESearch, and TS2000, and such social media platforms as Instagram and Meta (formerly known as facebook). The sample of this study includes 3,474(firm-year) observations from 799 unique Korean firms between 2013-2022. This study conducts fixed effect panel regression analysis to test the hypotheses. Findings - First, we found both corporate use of social media, and the number of uploaded corporate news on social media were positively related to CSP. We also found that positive user reactions to the news on social media were positively related to CSP. Second, we examine the moderating roles of firm age in the relationships described above. The results show that firm age strengthens both the relationship between number of uploaded news on social media and CSP, and the relationship between positive user reactions to news on social media and CSP. Research implications or Originality - This study extends the social media research in the management literature by investigating how corporate use of social media, number of uploaded corporate news on social media, and the user reactions on the news on social media affect corporate social performance. For a practical implication, our results allow the stakeholders to better predict corporate future CSP. They suggest that ceteris paribus, firms that use social media actively, vis-a-vis firms that do not use social media actively, are more likely to get good CSP scores. They also suggest that such beneficial effects of social media will become more prominent as companies get older.

• Smart Media Journal
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• v.11 no.10
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• pp.9-21
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• 2022

The recent expansion of the use of social media has served as an opportunity to express users' opinions in real time in various fields such as society, economy, politics, and culture, and brought many platforms that provide various information about companies. Among them, Glassdoor.com which started 2008 in US provides users with evaluations of the current and the former employees of their companies and also provides a outlooks for the company's growth Such a platform has the utility of providing necessary information to whom want to find a job or change jobs. In addition to this, variable studies have shown that the company information provided through these platforms is useful for investors as well. In this study, it was tested whether the corporate growth prospects of employees provided by Jobplanet, a platform with a typical function similar to Glassdoor.com in Korea, have predictive power to predict actual corporate growth. The forecast provided by Jobplanet and the company's financial indicator data received from FnGuide were collected and composed of panel data and analyzed using fixed effect model regression analysis. As a result, it was found that companies with positive prospects had higher employment growth than companies with negative prospects. When the outlook was neutral, the employment growth rate was higher than that of companies with a negative outlook.