• Journal of Convergence for Information Technology
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• v.8 no.6
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• pp.361-366
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• 2018

In this study, 200 social workers in Seoul and Gyeonggi area were surveyed using convenience extraction method. Data were analyzed by frequency, reliability, correlation, and regression analysis using IBM SPSS Statistics 20, and Sobel test was performed. The purpose of this study was to investigate the effects of empowerment on the relationship between exhaustion and organizational effectiveness of social workers and to provide basic data for improving organizational effectiveness. The results of the study are as follows. Empowerment was found to be mediated in the relationship between exhaustion and job satisfaction, which is a sub - area of organizational effectiveness. Empowerment was found to be mediated in the relationship between exhaustion and turnover intention, which is a sub - domain of organizational effectiveness. Therefore, it is necessary to have a resting place that gives a sense of security to the exhausted social worker rather than granting authority for the social welfare organization.

• The Journal of the Korea Contents Association
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• v.19 no.3
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• pp.375-384
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• 2019

The purpose of this study is to investigate the relationship among stress, smartphone addiction, and depression of university students and whether depression is mediators in the relationship between stress and smartphone addiction. For this purpose, data were collected from May 1st to 31, 2017 from 400 university students, and analyzed 381 valid ones. Frequency analysis, reliability analysis, correlation analysis and regression analysis were used as analysis methods; and the Soble test was conducted in addition to verification of mediator effect according to procedures of Baron & Kenny(1986) for verification of mediator effect. The results of this study are as follows. First, stress of the subjects was positively correlated with depression(employment stress r=.353, economic stress r=.193, heterosexual relationship stress r=.138) and smartphone addiction(employment stress r=.262, economic stress r=.178, heterosexual relationship stress r=.190). Second, depression was a statistically significant partial mediator between employment-stress and smartphone addiction(Z=2.7151, p<.001). Based on the results of this study, I proposed education/counseling programs that can relieve employment-stress and depression.

• Journal of Korean Academy of Nursing
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• v.49 no.4
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• pp.386-397
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• 2019

Purpose: This study examined the effect of hospitals' family-friendly management on married female nurses' retention intention. The focus was the mediating effects of the work-family interface (work-family conflict, work-family enrichment and work-family balance). Methods: This study was a cross-sectional study. The participants were 307 nurses working at five public and five private hospitals with more than 200 beds in Seoul. Data were collected using structured questionnaires from September 10 to September 17, 2018 and analyzed with SPSS 24.0. Data were analyzed using an independent t-test, a one-way ANOVA, Pearson's correlation coefficients, and multiple regression following the Baron and Kenny method and Sobel test for mediation. Results: There were significant correlations among family-friendly management, the work-family interface, and retention intention. Work-family conflict showed a partial mediating effect on the relationship between family-friendly management and retention intention. Work-family enrichment showed a partial mediating effect on the relationship between family-friendly management and retention intention. Work-family balance showed a partial mediating effect on the relationship between family-friendly management and retention intention. Conclusion: These findings indicate that both hospitals' family-friendly management and nurses' work-family interface are important factors associated with nurses' retention intention. Therefore, hospitals should actively implement family-friendly management for nurses and establish strategies to enhance nurses' work-family interface for effective human resource management.

• Child Health Nursing Research
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• v.25 no.2
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• pp.205-213
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• 2019

Purpose: The purpose of this study was to examine the mediating effect of major satisfaction in the relationship between academic self-efficacy and academic achievement among nursing students. Methods: Data were collected from 142 nursing students from March 5 to March 9, 2018, and the collected data were analyzed using SPSS version 21.0 for Windows. Results: Academic self-efficacy had a significant effect on both major satisfaction (${\beta}=.31$, p<.001), and academic achievement (${\beta}=.43$, p<.001). The parameter of major satisfaction was found to have a significant effect on the dependent variable, academic achievement (${\beta}=.22$, p=.007), and the independent variable, academic self-efficacy, also had a significant effect on academic achievement (${\beta}=.39$, p<.001). Thus, major satisfaction was found to have a partial mediating effect on the relationship between academic self efficacy and academic achievement. The Sobel test showed that the path of the academic achievement and academic self efficacy variables was significantly mediated by major satisfaction (Z=2.99, p=.003). Conclusion: Academic self-efficacy was found to affect academic achievement, and major satisfaction was found to play a partial mediating role in the relationship between academic self efficacy and academic achievement.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.7
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• pp.55-66
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• 2021

The purpose of this study is to analyze the relationship and effects of variables both directly and indirectly (e.g., investment (INV), government expenditure (GE), unemployment rate (UR), economic growth (EG), and income inequality). The analytical phases consist, first, to transform the data using the Log Natural (Ln) method. Second, to check normality and multicollinearity of data. Third, to test direct effects of variables (government expenditure and investment effect on the unemployment rate and economic growth; investment on government expenditure; economic growth on unemployment rate; economic growth and unemployment rate on income inequality). Fourth, to test indirect effects using Sobel test, which involves UR and EG as intervening variable. Fifth, to test hypotheses with p-value < 0.05. The results of the study reveal that, of the 12 relationships, statistics show that 11 variations of the association have significant positive and negative effects. Theoretically, the different characters and goals of GE and INV in each country will have a different impact on EG and UR goals. The study provides an input, especially for the government. To create optimal EG through GE and INV, it is necessary to allocate budgets to industrial sectors that can absorb a massive labor force and to new economic growth sectors.

• 한국노년학
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• v.37 no.2
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• pp.415-430
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• 2017

This study aims to examine whether assets matter for depression among older adults and whether the relationship between assets and depression is mediated by social activities. The research questions are based on asset effect theory, stakeholder theory, and activity theory. This study used the 5th wave of KLoSA data which is a nationally representative data in Korea. Research findings are summarized as follows: First, we found the negative relationship between assets and depression of older adults. Second, The relationship between assets and depression was partially mediated by social activities of older adults. The findings suggest that older adults with assets are more likely to participate in social activities and accordingly their depression is likely to decline. Based on the empirical findings, we can propose that asset-building programs targeting older adults should be developed and that the financial education and saving chances should be given to middle-aged adults who need to prepare old age in the long-term perspective.

• Journal of the Korea Fashion and Costume Design Association
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• v.23 no.1
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• pp.19-36
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• 2021

Real-time two-way communication has become an important factor in the relationship between consumers and broadcasters in the Live Commerce environment. To clarify, the relationship of the factors, and the effect of Live Commerce's on consumer purchase intention were examined. In addition, the role of Wanghong, who broadcasts Live Commerce and Co-experience that occurs between consumer and broadcasters influences consumer purchase intention. An online survey method was conducted for 403 subjects in their 20s that were Live Commerce users in Shanghai, Beijing, and Guangzhou, China. The number of final the data used for the analysis was 274 and anlaysis was conducted using SPSS 26.0 program and a Sobel test was employed. Based on the analysis of the data, it was found that Live Commerce's characteristics consisted of interactivity, security, and Wanghong's characteristics consisted of honesty, originality, and expertise. Also, it revealed that Co-experience was consisted of responsiveness and vividness. Second, for Live Commerce's characteristics, the Wanghong's characteristics, and Co-experience had a positive effect on the consumers' purchase intention. Third, the Wanghong's characteristics and vividness, a factor of Co-experience, had significant mediating effects on the relationship between Live Commerce's characteristics and the consumers' purchase intention. Finally, responsiveness of Co-experience had a noteworthy mediating effect on the relationship between the interactivity of Live Commerce's characteristics and the consumers' purchase intention. This study confirmed the important role of Live Commerce's characteristics, the Wanghong's characteristics and Co-experience in relation to the consumers' purchase intention. In addition, the Wanghong's characteristics and Co-experience were proposed as a significant mediating factors.

• The Journal of Korean Society for School & Community Health Education
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• v.22 no.3
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• pp.29-39
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• 2021

Purpose: This study aims to investigate the mediating effect of grit in the relationship between body image and health promotion lifestyle for nursing students. It was implemented to present basic data for the development of educational programs to establish the health promotion lifestyle of nursing students. Methods: The participants of this study were 169 nursing students in three universities in G City, J Province. Data were descriptive statistics, t-test, ANOVA, Pearson correlation analysis. Also mediation analysis was performed according to the Baron and Kenny method and Sobel test. Results: Health promotion lifestyle is positively correlated with body image(r=.53, p<.001), grit (r=.37, p<.001), and body image is positively correlated with grit(r=.33, p<.001). The grit showed a partial mediating effect between the body image and the health promotion lifestyle(Z=3.21, p<.001), the positive the body image(β=.46, p<.001), the higher the grit(β=.22, p<.001), the healthier the health. The level of health promotion lifestyle increased, and the explanatory power to explain the health promotion lifestyle was 33%. Conclusion: Therefore, in order to improve the health promoting lifestyle level of nursing students, it is important to change their perception so that they can view their body image positively. In addition, it suggests that nursing students need to cultivate grit so that they can continuously pay attention to and strive for their health promotion lifestyle.

• Korean Journal of Occupational Health Nursing
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• v.31 no.1
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• pp.22-30
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• 2022

Purpose: This study aimed to identify the mediating effect of Psychological stress of COVID-19 stress on the relationship between nursing work environment and turnover intention of nurses in long-term care hospitals. Methods: The participants were 176 nurses working at three long-term care hospitals in Changwon City. Data were collected from August 11 to 14, 2021, using self-report questionnaires. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients, and hierarchical regression, using the SPSS 23.0 software. A mediation analysis was performed according to the Baron and Kenny's test, and Sobel test. Results: Turnover intention was positively correlated with Psychological stress of COVID-19 stress (r=.23, p=.002) and negatively correlated with nursing work environment (r=-.44, p<.001). Psychological stress of COVID-19 stress had a significantly negative relationship with nursing work environment (r=-.15, p=.045). Psychological stress of COVID-19 stress partially mediated the relationship between nursing work environment and turnover intention. Conclusion: The findings of this study indicate that a positive nursing work environment can help nurses reduce their Psychological stress of COVID-19 stress and turnover intention. To reduce the turnover intention among nurses' in long-term care, it is necessary to promote better work environments suitable for COVID-19 and to establish detailed strategies for reducing their physiological stress.

• Journal of radiological science and technology
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• v.45 no.2
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• pp.145-150
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• 2022

The main purpose of this work was to restore the blurry chest CT images by applying a blind deconvolution algorithm. In general, image restoration is the procedure of improving the degraded image to get the true or original image. In this regard, we focused on a blind deblurring approach with chest CT imaging by using digital image processing in MATLAB, which the blind deconvolution technique performed without any whole knowledge or information as to the fundamental point spread function (PSF). For our approach, we acquired 30 chest CT images from the public source and applied three type's PSFs for finding the true image and the original PSF. The observed image might be convolved with an isotropic gaussian PSF or motion blurring PSF and the original image. The PSFs are assumed as a black box, hence restoring the image is called blind deconvolution. For the 30 iteration times, we analyzed diverse sizes of the PSF and tried to approximate the true PSF and the original image. For improving the ringing effect, we employed the weighted function by using the sobel filter. The results was compared with the three criteria including mean squared error (MSE), root mean squared error (RMSE) and peak signal-to-noise ratio (PSNR), which all values of the optimal-sized image outperformed those that the other reconstructed two-sized images. Therefore, we improved the blurring chest CT image by using the blind deconvolutin algorithm for optimal approach.