• Title/Summary/Keyword: Panel Data Approach

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The Duality of Organizational Status and Temporary Employment: The Impact of Evaluated Status and Categorical Status on Temporary Employment in Korean Universities (조직지위의 이원성과 비정규직 고용: 한국대학의 평가형 지위와 범주형 지위가 비정규직 고용에 미치는 영향)

  • Dae-Hun Chunga
    • Asia-Pacific Journal of Business
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    • v.14 no.3
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    • pp.89-101
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    • 2023
  • Purpose - This paper discusses an impact of status on organization's temporary employment. Status not only offers various opportunities for organization but also places constrains on organization. In this perspective, we propose that organization's temporary employment will differ depending on the status. Design/methodology/approach - We predict that organization's evaluated status has a U-shaped relationship with temporary employment because organizational social insecurity varies by the status. Moreover, we predict that organization's categorical status has a positive effect on temporary employment since organizational legitimacy varies with the status and that the effect will be enhanced by an organizational niche. To verify these predictions, we examined a regression analysis using panel data of temporary employment in Korean universities. Findings - The results of regression analysis show that there is a U-shaped relationship between universities' evaluated status and temporary employment. This implies that the middle status university is likely to minimize temporary employment because of conformity pressures. In addition, the results show that university's categorical status has a positive effect on temporary employment and the effect is enhanced by university's market concentration. This suggests that the categorical status has a strong impact on specialist university. Research implications or Originality - This paper contributes the development of temporary employment theory by applying duality of organizational status and identifies the organizational determinants of temporary employment in Korean universities.

Mediated Moderating Effects of Life Satisfaction and Physical Activity in the Effect of Positive Parenting Attitudes Perceived by Adolescents on Depressed (청소년이 지각한 긍정적 양육태도가 우울에 미치는 영향에서 삶의 만족도와 신체활동의 매개된 조절효과)

  • Min ji Lee;Sang woo Kim
    • Journal of Korean Physical Therapy Science
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    • v.31 no.2
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    • pp.75-89
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    • 2024
  • Background: The purpose of this study is to examine the mediating effect of life satisfaction and moderating effect of physical activity on the effect of adolescents' perceived positive parenting on depressed. In addition, the present study explores the role of life satisfaction and physical activity in the relationship between adolescents' perceived positive parenting and depressed, which may help in the reduction and control of adolescent depressed. Design: This study utilizes data from the 2021 Korean Children and Youth Panel Survey. Methods: First, positive parenting attitudes have a significant positive effect on life satisfaction. Second, life satisfaction has a significant negative effect on depressed. Third, life satisfaction has a mediating effect on the relationship between positive parenting and depressed. Fourth, physical activity has a significant negative effect on depressed. Fifth, physical activity has a moderating effect on the relationship between life satisfaction and depressed. Finally, this study confirmed the mediating effect of life satisfaction and moderating effect of physical activity on the relationship between positive parenting attitudes and depressed. Conclusion: This study confirmed that life satisfaction and physical activity are positive resources for depressed in adolescents. Therefore, a system that promotes a positive outlook on life and voluntary physical activity is necessary to prevent and overcome depressed. In addition, it shows the need for arts and physical education as well as entrance examination-oriented subjects in the curriculum. The results of this study may provide a basis for the therapeutic approach of mental health physiotherapy in the treatment of adolescent depressed.

Corporate use of Social Media and Corporate Social Performance: Evidence from Korea (기업의 SNS 활용과 사회적 책임 성과: 기업 연령의 조절 효과를 중심으로)

  • Jee-Hyun Park;Do-Kyun Kwon;Yang-Min Kim
    • 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.

The Effect of Corporate Ownership Structure on Technological Innovation: Evidence from Chinese Listed Companies (기업의 지분구조 특성이 기술 혁신에 미치는 영향: 중국 상장기업을 중심으로)

  • Yuying Chen;Eunjung Yeo
    • Asia-Pacific Journal of Business
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    • v.15 no.3
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    • pp.139-172
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    • 2024
  • Purpose - This study investigates the relationship between corporate ownership structure and technological innovation for Chinese listed firms. Specifically, we analyze four ownership characteristics: concentration, constraints, alignment, and foreign/domestic institutional investor ownership, and use patent applications to measure innovation. Design/methodology/approach - Employing a quantitative research design, this study uses panel data of Chinese listed companies during the period from 2015 to 2021. The empirical analysis relies on multiple regression models, including Tobit models and two-stage least squares estimation, to assess the relationship between corporate ownership structure characteristics and innovation. Robustness checks are conducted using lagged dependent variables and subgroup analyses based on firm age, ownership type, and stock exchange listing. Findings - First, it provides empirical evidence on the non-linear relationship between ownership concentration and innovation, suggesting that there is an optimal level of ownership concentration for promoting innovation. Second, it highlights the importance of equity constraints in influencing innovation, showing that both excessive and insufficient equity constraints can hinder innovation. Third, the study demonstrates the negative impact of aligned ownership and control on innovation, suggesting that separation of ownership and control may be beneficial for fostering innovation. Fourth, it sheds light on the differential impact of domestic and foreign institutional investors on innovation, suggesting that foreign institutional investors may play a more positive role in promoting innovation. Research implications or Originality - The significance of this study's results lies in the fact that we empirically analyze the relationship between corporate ownership characteristics and technological innovation, thereby suggesting the direction of a desirable corporate governance structure that listed companies should pursue depending on their circumstances. This research contributes to a deeper understanding of the ownership characteristics that influence technological innovation and provides valuable insights for policymakers and corporate managers.

The Relationship between Self-rated Health and Depression in the Elderly with Chronic Illness -Moderating Effect of Satisfaction with Social Relationship and Leisure- (만성질환을 가진 노인의 주관적 건강과 우울인식의 관계 -사회적 친분관계 만족과 여가생활 만족의 조절효과-)

  • Lee, Jin-Hyang;Oh, Mi-Ok
    • The Journal of the Korea Contents Association
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    • v.17 no.2
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    • pp.429-438
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    • 2017
  • The main objectives of this study are to examine the effects of self-rated health on depression and to examine the moderating effect of satisfaction with social relationship and leisure on relationship between self-rated health and depression in the elderly with chronic illness. To do this, we analyzed 4,831 elderly people with chronic illness using the 10th Korea Welfare Panel data in 2015. To investigate the moderating effects of variables, we conducted a hierarchial regression analysis and confirmed the change $R^2$. As a result of that, first, subjective health, satisfaction with social relationship and satisfaction with leisure had a direct impact on depression. The results show that the better self-rated health of the elderly is, the higher satisfaction with social relationship is and the higher satisfaction with leisure is, the lower depression is. Second, it was found that satisfaction with social relationship and leisure was moderating variables in the relationship of subjective health and depression. This shows that the approach to the subjective aspect of the parties is important rather than the quantitative approach to the social interaction or leisure life. Based on this results, this study has proposed the implications and limitations of it and suggestions for further study.

CO2 Emission and Productivity of Fossil-fueled Power Plants: A Luenberger Indicator Approach (CO2 배출량을 감안한 화력발전소의 생산성 변화 분석: Luenberger지수 접근법)

  • Kwon, Oh-Sang
    • Environmental and Resource Economics Review
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    • v.19 no.4
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    • pp.733-752
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    • 2010
  • This study applies the Luenberger indicator approach to estimate productivity of the Korean fossil-fueled power plants. A panel data set of 25 power plants was used. The method incorporates $CO_2$ emission as an undesirable output and shows that ignoring $CO_2$ emission overestimates the productivity change. There are two sources of overestimation. First, the usual method estimates productivity change ignoring the increase in $CO_2$ emission that occurred during the study period. Second, the productivity change estimated by the usual method that does not incorporate $CO_2$ emission is very sensitively affected by the change in operation rate. The paper decomposes the productivity change into the efficiency change and the technical change. The results show that the two sources contribute to the productivity change almost equally. It is also shown that the size and the pattern of productivity change are dependent on the plants' fuel types. Non-LNG power plants which saved their energy consumption and thereby reduced their $CO_2$ emission have achieved relatively high rate of productivity improvement.

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The Effects of Preparation for Old Age of the past on Activity of the elderly: The mediating effect of Psycho-Social resources (과거 노후준비가 노년기의 활동성에 미치는 영향 : 심리사회적 자원의 매개효과)

  • Shin, Soo-Min;Kim, Dongbae
    • Korean Journal of Social Welfare Studies
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    • v.44 no.3
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    • pp.57-83
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    • 2013
  • There has neither been enough research on how to approach the concept of active aging through an integrated view nor an examination to verify the relationship between preparation for old age and active aging in later life. Therefore, this research aims to verify that the elderly, who have prepared for their later life, affected their active aged life. In addition, by setting up self-efficacy and social support as mediator in the research model, this paper looks into the psycho-social resource mechanism of the relationship in depth. In order to verify the correlation of two variables, the Seoul welfare panel data, a mediating model structured by psycho-social resources created by Seoul welfare foundation in 2010, was used. The total sample size was a group of 1,492 elders aged over 65. When it came to our research methods, structured equation analysis was applied to verify the mediating effect and theoretical background. The results revealed that physical preparation, financial preparation, social preparation and leisure preparation directly affected their active aging level positively, thus, psycho-social resources showed a partial mediating effect between preparation for old age of the past and active aging level. The research implications are as follows. First, this research makes an effort to approach the concept of preparation for old age with an integrated perspective through making a construct by entire preparation types. Second, it will attempt to verify the relationship between preparation for old age in the past and active aging in terms of multi-dimension is meaningful. Third, this research reveals the function of psycho-social resource, self-efficacy and social support within the relationship. As far as the partial mediating effect is concerned, preparation for old age education for the middle-aged class should be modified as a decent field to enhance of the elderly.

A Study of Longitudinal Changes in Mother-Child Interaction and its Effect on Media Device Addiction (모-자녀 상호작용 변화 양상에 따른 자녀의 미디어 기기 중독 차이)

  • Yeon, Eun Mo;Choi, Hyo-Sik
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.12
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    • pp.346-353
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    • 2020
  • The purpose of this study was to explore types of longitudinal changes in interactions between mothers and 4-year-old children in primary school as well as the effects on media device addiction. To explore interaction types between mothers and children, latent class growth modeling (LCGM) and BCH were used in a three-step approach. Data from the 6-10th wave of the Panel Study of Korea Children were used. First, the trajectory of the mother-child interactions was linear and decreased across time. This linear decrease was classified into the following three trajectories: high-decreasing, average-deceasing, and low-decreasing. Second, BCH was performed to examine media device addiction in each trajectory, and the findings show that children who had low initial mother-child interactions over time were more likely to experience daily disturbances in adaptive functions such as withdraw or tolerance than other groups of children. The results indicate that maximizing the quality of mother-child interactions in childhood through primary school can lower media device addiction in children.

The Reciprocal Effects of Deviant Self-Concept and Delinquent Behaviors Revisited: A Latent State-Trait Autoregressive Modeling Approach (청소년 비행과 일탈적 자아개념의 상호적 인과관계: 잠재 상태-특성 자기회귀 모델을 통한 재검증)

  • Eunju Lee;Ick-Joong Chung
    • Korean Journal of Culture and Social Issue
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    • v.16 no.4
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    • pp.447-468
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    • 2010
  • The purpose of this study was to attain a clearer understanding of the reciprocal effects of deviant self-concept and delinquent behaviors by applying a latent state-trait autoregressive modeling approach. Although traditional autoregressive cross-lagged (ARCL) modeling has been widely applied to test the longitudinal reciprocal relationship between the two constructs, it could produce misspecified findings if there were trait-like processes involved in this relationship. The latent state-trait autoregressive(LST-AR) modeling was applied to control trait effects of deviant self-concept and to examine the reciprocal causal relations between the two constructs. Data were taken from a sample of 3,449 eighth graders who were followed annually for 5 years from the Korea Youth Panel Study. The combining LST-AR model with ARCL model substantiated the reciprocal effects of deviant self-concept and delinquent behaviors, even after the stable trait component of deviant self-concept was taken into account. The present findings shed lights on the reciprocal effects of behaviors (i.e., delinquency) and self concepts (i.e., deviant self-concept). Not only did behaviors change corresponding self-concept, but the ways adolescents perceived themselves influenced their behaviors.

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Nursing Time Use in a Newborn Intensive Care Unit (NICU) (신생아중환자실 간호사의 간호업무량 분석)

  • Jun, Eun-Kyoung
    • Journal of Korean Academy of Nursing Administration
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    • v.6 no.1
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    • pp.55-81
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    • 2000
  • This study examined nursing care in a Newborn Intensive Care Unit (NICU) by reviewing nursing activities for the newborns. Through direct observation, time used for nursing care according to the nursing activity, shift, day of the week, and position of the nurses was measured. This study was done on November 15, 21, 24, 1999 at a university medical center hospital and included eight nurses and 179 newborns as the study subjects. The data were collected from the medical records, and by using a nursing activity record for the NICU, and a nursing activity time record for the NICU. The first step in the data collection process was to develop a list of nursing activities which was done through a literature review, examination of medical affairs and duty records. Content validity was measured by a panel of three professors who were experienced clinicians. In the second step two pre-training sessions were held with three sophomore student nurses who then measured the time for each nursing activity using a stopwatch. The data were analyzed using frequencies for nursing activities, averages, percentages and ANOVA for differences between shift and between days of the week, and percentages and t-test for differences according to position of the nurse. The results are as follows: 1) The total number of activities was 156, direct or indirect nursing activities. Direct nursing activity classified according to physical, educational, emotional/social/economic/spiritual needs. There were 109 direct nursing activities in 16 fields. 2) The order of nursing activities, according to time required, was record keeping, nutritional care, measurement/observation, medication, hygiene care, examination and specimen collection, and checking supplies, and according to frequency, measurement/ examination, record keeping, nutrition care, hygiene care, elimination care and medication. 3) According to shift, direct care during the night shift at 313.4 minutes was the longest time and indirect nursing care during the night shift at 252.2 minutes was the highest time. 4) For days of the week, Monday had the highest time for direct care 275.8 minutes (34.6%) and Wednessday had the highest time for indirect nursing care 269.6 minutes (36.1%). 5) For nursing time according to position of nurse, general nurses had the highest for direct care (330.7 minutes), nurse managers for indirect nursing activities (239.0 minutes) and general nurses for individual private time (63.9 minutes). The results of this study show that the major nursing time consuming activities included record keeping, nutrition care and measurement/examination. For newborns, time needs to be allowed for care to be sensitive, sophisticated and specialized rather than concentrated on indirect nursing tasks such as record keeping. Therefore, it is imperative to develop computerized systems that support a systematic approach to record keeping which is more efficient. Moreover, nursing needs according to shift, day or position of nurse can be utilized in assessing nursing resources through a computerized process.

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