• Korean Journal of Social Welfare Studies
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• v.40 no.1
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• pp.163-196
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• 2009

This study aimed to examine the direct impact and pathways of stress factors, internal resources(positive self-esteem and negative self-esteem) on the depressive symptoms based on stress coping theory, grouping older stage into three groups such as, the young-old, the old- old, oldest-old. This study further examined the mediating role of self-esteem in the relationships between stress factors and depressive symptoms. Data from 1st year Korea Welfare Panel Study were used for the analysis. The total number of participants was 4,338 who were over 65. Data are Analyzed using Structural Equation Modeling. Results revealed that stress factors and internal resources(positive self-esteem and negative self-esteem) directly affected depressive symptoms. The effects of stress factors on depressive symptoms were mediated by positive and negative self-esteem.. Results of multi-group structural equation modeling showed that the effects and pathways of stress factors and self-esteem on depressive symptoms were different into the three old groups. Based on the findings, the implications for policy and practice were discussed.

• Korea Trade Review
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• v.44 no.1
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• pp.45-56
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• 2019

The purpose of this study is to investigate the relationship between foreign investment and carbon emissions in the Korean electricity sector, the causal relationship between the foreign investment invested in the electric power sector in the 16 regional regions and the carbon emissions in the region, The purpose of this study is to analyze the effects of foreign investment on these sectors and the carbon footprint of these sectors using Panel Random Effect Analysis, Panel VAR and OLS models. A panel analysis of foreign investment and regional carbon emissions showed that there was a causal relationship. Based on this analysis, OLS analysis showed that 7 out of 16 metropolitan areas were foreign investment And carbon emissions were significant. In the remaining six regions except Gwangju, there was a causal relationship between foreign investment in the local power sector and the reduction of carbon emissions. After categorizing the electric power industry by device, process, purpose and number of employees, causality also appeared in relation to foreign investment in these sectors and their carbon emissions. Through this study, the authors suggest that foreign investment can be a way to solve not only the financial burden of carbon emission problem, but also the development of national economy and industry through the inflow of capital and advanced new technology.

• 한국노년학
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• v.29 no.2
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• pp.717-728
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• 2009

The purpose of this study is to examine the moderating effect of family relationship (relationship with spouse and adult children)about the impact of economical status and health(physical health, cognitive health) on depression. The data came from Korean Longitudinal Study of Ageing(KLoSA) 2005 of Korea labor institute. 2,566 individuals(male 1,535, female 1,031) with spouse and aged 65 and over were selected for this study. Using the multiple regression model, we found that significant effect of economical status, physical health and cognitive health on depression. Also relationship with spouse moderated the effect of economical status on depression and relationship with adult children moderated the effect of cognitive health on depression. The results of this study suggest that family relationship is important variable to reduce depression of the elderly.

• Korean Journal of Social Welfare
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• v.64 no.2
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• pp.55-83
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• 2012

Self-employment rate is high in Korean labor market, while the income gap within self-employed is also high. Although, there are very few studies that addressed on the income inequality of self-employed. Thus, this study has measured the earnings inequality of self-employed by generalized entropy indices and decomposed inequality factor and trend. The empirical study is based on Korea Welfare Panel Study wave 1~4. The main result from this analysis is summarized in three points. Firstly, earnings inequality of self-employed is severely high and the earnings polarization within self-employed has become more serious in Korea. Secondly, this study provides the evidence that the main factor of earnings inequality of self-employed is the status of self-employment, education level, age group, workplace scale and industry. Thirdly, the contribution of relative changes in the incomes of the status of self-employment is the largest to the inequality trend. In terms of education level, age group and industry, the increase of inequality within group(pure effect) mainly attributes to the rise of earnings inequality of self-employed and the change effect of group composition contributes to deterioration of inequality.

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.473-484
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• 2022

This study aimed to verify the reciprocal casual relationship between self-rated health status and depression in the elderly through longitudinal analysis. An autoregressive cross-lagged model was identified. This study analyzed 3,363 elderly people aged 65 or older using the 5th, 6th, and 7th wave data from Korean Longitudinal Study of Ageing(KLoSA). The results are as follows. First, self-rated health status had a positive(+) autoregressive effect. Second, depression had a positive(+) autoregressive effect. Third, self-rated health status had a negative(-) cross-lagged effect on depression, but depression was not a casual predictor of self-rated health status. Based on these findings, it was suggested that there is a need for systematic policies to improve basic fitness in the early stages of old age, as well as the need to expand health promotion programs and implement integrated depression management programs.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.68 no.4
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• pp.262-275
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• 2023

This study aimed to assess the preferences of African, American, and Asian panels, in comparison to a Korean panel, for various Korean rice varieties, including three japonica, two indica, and one Tongil-type, all developed by the Rural Development Administration in Korea. Regarding rice appearance, most panelists, except for the Koreans, favored long and slender rice varieties like 'Hanyeol', 'Hyangyeol', and 'Amissal'. In contrast, the Koreans preferred wider varieties like 'Sindongjin' and 'Deuraehyang'. Notably, the overseas panelists consistently favored rice varieties with high appearance quality in sensory evaluations of cooked rice. Both overseas and Korean panelists strongly preferred the indica rice variety 'Hanyeol' in terms of appearance quality and sensory evaluations. However, Korean rice varieties like 'Amissal' and 'Sindongjin' scored high in appearance quality with overseas panelists but received low ratings in sensory aspects, including shape, stickiness, and taste, compared to those for 'Hanyeol'. This suggests that considering sensory characteristics is important when exporting Korean rice varieties. Regarding taste characteristics preferred by the panelists derived from the correlation analysis between taste traits, Africans preferred rice with a smooth texture and no stickiness, especially favoring long-grain rice. Americans leaned towards rice with a slightly firm texture, some stickiness, and late aging characteristics. Asians preferred rice with a smooth texture, low stickiness, and long-grain varieties. In contrast, Koreans favored round rice with a glossy appearance, a slightly firm texture, late aging traits, and some stickiness. These research findings can serve as valuable data for the development of rice varieties for overseas markets and are expected to contribute to securing competitiveness in international markets.

• Journal of Family Resource Management and Policy Review
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• v.26 no.1
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• pp.43-58
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• 2022

In this study, I analyzed how the hours and frequency of housework change after older couples' retire, using data from the 1st(2007) to 7th(2018) years of the Women's Family Panel (KLoWF) conducted at the Korea Women's Policy Research Institute. In this study, couples where both the wife and the husband were 65 years of age or older were selected for the survey. A total of 2,482 people participated. The results as follows. First, as comparing between two time points, when the weekday housework hours of the wife and husband at t1 time point increased, the weekday housework hours of the wife and husband at t2 time point also increased. Second, on weekdays, when the wife's housework increased, the husband's housework also increased. On the other hand, on weekend, when the wife's housework increased, then the husband's housework decreased on weekdays.

• Information Systems Review
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• v.18 no.2
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• pp.23-38
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• 2016

Previous studies on information systems (IS) and finance suggest that information on stock message boards influence the investment decisions of individual investors. However, how information on online stock message boards influences an individual investor's buy or sell decisions is unclear. To address this research question, we investigate the relationship between a number of posts on stock message boards and order imbalance in stock markets. Order imbalance is defined as the difference between the daily sum of buy-side shares traded and the daily sum of sell-side shares traded. Therefore, order imbalance can suggest the direction of trades and the strength of the direction with trading volumes. In this regard, this study examines how the number of posts (information on stock message boards) influences order imbalance (stock trading behavior). We collected about 46,077 messages of 40 companies on the Korea Composite Stock Price Index from Paxnet, the most popular Korean online stock message board. The messages we collected were divided based on in-trading and after-trading hours to examine the relationship between the numbers of posts and trading volumes. We also collected order imbalance data on individual investors. We then integrated the balanced panel data sets and analyzed them through vector regression. We found that the number of posts on online stock message boards is positively related to prior order imbalance. We believe that our findings contribute to knowledge in IS and finance. Furthermore, this study suggests that investors should carefully monitor information on stock message boards to understand stock market sentiments.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.485-496
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• 2019

The current study examined the latent mean analysis and path analysis comparison between male and female groups in the structural relationships among parent-child conversation, peer attachment, satisfaction in teacher at a community child care center, ego-resiliency, self-esteem, and career identity in adolescents who attend a community child care center. For this purpose, 438 adolescents who participated in the 4th(2017) questionnaire in the 2nd child panel of the community child care center were used. From the analysis results, first, peer attachment and satisfaction in teacher at a community child care center increased ego-resiliency and career identity, but parent-child conversation did not predict ego-resiliency and career identity. Peer attachment and satisfaction in teacher at a community child care center was fully mediated by ego-resiliency and self-esteem to career identity. Second, in the latent mean analysis, male students showed significantly higher latent mean values in ego-resiliency and self-esteem than female students, while female students showed significantly higher latent mean values in parent-child conversation than male students. Third, multi-group analysis revealed different paths to career identity between the genders. Peer attachment can buffer the effect of ego-resiliency and self-esteem on career identity of male students, but satisfaction in teacher at a community child care center buffers more on the ego-resiliency of female students. The results of this study suggest that social support for enhancing ego-resiliency and self-esteem is needed to encourage career identity, and that gender needs to be considered.

• 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.