• Journal of IKEEE
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• v.17 no.3
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• pp.339-345
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• 2013

In this paper, the probabilistic exclusion based orthogonal matching pursuit (PEOMP) algorithm for the sparse signal reconstruction is proposed. Some of recent greedy algorithms such as CoSaMP, gOMP, BAOMP improved the reconstruction performance by deleting unsuitable atoms at each iteration. They still often fail to converge to the solution because the support set could not escape from a local minimum. PEOMP helps to escape by excluding a random atom in the support set according to a well-chosen probability function. Experimental results show that PEOMP outperforms several OMP based algorithms and the $l_1$ optimization method in terms of exact reconstruction probability.

• Journal of Information Technology Services
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• v.21 no.2
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• pp.43-59
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• 2022

This study investigates an association among Facebook users' upward comparison (e.g., envy), social support (e.g., favorable comments and like), and life satisfaction, putting their self-esteem as a mediating variable. For this analysis, 1,332 female and male Facebook users in Seoul and other four cities in South Korea were surveyed. Structural equation modeling including confirmative factor analysis were employed as quantitative analysis methods. Results show that Facebook users' upward comparison with other users and social support significantly impact their satisfaction mediated by their self-esteem. Specifically, when users feel envious of other users, this emotion lowers their self-esteem, and subsequently, the self-esteem reduces their satisfaction. On the other hand, sufficient social support for users positively affects their self-esteem, which leads to the increase of their satisfaction. The present study is differentiated from previous studies in that it focuses on Facebook users' emotional changes in the process of sharing massive amounts of posts and finds a stepwise relationship among their feelings, including self-esteem as a mediating variable. Additionally, this study is the first to verify a situation when Facebook users' envy of other users' posts affects the decline in their satisfaction through the mediation of their self-esteem.

• Journal of the Korean Society of Clothing and Textiles
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• v.47 no.2
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• pp.256-276
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• 2023

In South Korea, it has become popular for adolescent girls to wear makeup. From social perspectives on their makeup use, however, it remains controversial among parents, teachers, and even the girls. This study examined the status of adolescent girls' makeup usage, identified factors that influence their makeup use, and laid the groundwork for establishing a social consensus on makeup use among adolescent girls in South Korean society. Data from South Korean adolescent girls were collected and analyzed using MANOVA for repeated measures, confirmatory factor analysis, and structural equation modeling. Adolescent girls were found to wear less makeup at school than outside of school. Additionally, their makeup use was influenced by both positive (e.g., fashion leaders and social support from friends) and negative factors (e.g., low self-esteem). The findings of this study suggest that instead of strict bans against the use of makeup by girls, educational programs are needed to help adolescent girls grow up with healthy perspectives.

• Human Ecology Research
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• v.60 no.2
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• pp.231-242
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• 2022

This study examines the relationship of adult attachment, social support, and subjective happiness of university students, and confirm the mediating effect of social support in the relationship between adult attachment and subjective happiness. Participants in this study consist of 284 university students enrolled in G city. Data were analyzed using SPSS and AMOS to conduct descriptive statistics, correlation analysis, and a structural equation model. The main findings are as follows. First, Attachment anxiety and attachment avoidance showed negative correlations with social support and subjective happiness. And social support showed a positive correlation with subjective happiness. Second, social support showed a partial mediating effect on the effect of attachment anxiety and attachment avoidance on the subjective happiness of university students. This study is meaningful in providing basic data for educational and counseling interventions that enhance subjective happiness of university students.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.2
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• pp.92-103
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• 2021

This study was undertaken to examine the effects of social support, as well as avoidance coping, depression and suicidal ideation, of the elderly over 65 years, in G city. This was a descriptive survey study, enrolling 482 subjects from 9 elderly schools in G city, from October 31, 2019 to 1. Data collected were analyzed with t-test, ANOVA, Pearson's correlation coefficients and multiple regression, using the SPSS WIN 24.0 program. The average score of social support was 5.71±1.11, avoidance coping style 12.41±3.45, depression 6.33±2.77, and suicidal ideation 6.17±1.87. Suicidal ideation (r=0.292, p<0.001) positively correlated with avoidance coping, and negatively correlated with gender (r=-0.02, p=0.018), number of family (r=-0.12, p=0.008), social support (r=-0.19, p<0.001), and depression (r=-0.24, p<0.001). Results of regression indicated that gender, social support, avoidance coping style, and depression explained 12.8% of variance in suicidal ideation. Therefore, our results indicate the necessity to develop a support program that improves the social support, and addresses avoidance coping style, depression and suicidal ideation, thereby helping to reduce negative thinking amongst the community of seniors aged over 65 years.

• Korean Journal of Health Education and Promotion
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• v.33 no.3
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• pp.25-35
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• 2016

Objectives: The purpose of this study is to determine the fatigue, self-esteem, and depression of pregnant women with gestational diabetes mellitus (G-DM), and to reveal associated factors of depression. Methods: As a descriptive correlation study, data was collected from 119 pregnant women with G-DM. Data was analysed using t-test, ANOVA, and stepwise multiple regression. Results: Fatigue, self-esteem, and depression averaged $2.09{\pm}.62$ (range of scale 1~4), $2.63{\pm}.32$ (range of scale 1~6), and $0.45{\pm}.25$ (range of scale 0~3), respectively. The depression varied with a statistical significance according to the age (p=.008), employment (p=.014), child (p=.034), and physical and psychological adjustment of pregnancy (p<.001). We also identified fatigue as the most influencing factor and the physical and psychological adjustment of pregnancy as the second most influencing factor, self-esteem as the third, age as the fourth, and child as the influencing factor on the G-DM women's depression. Conclusions: This research provided a valuable opportunity to recognize G-DM as a personal, and societal problem, which calls for relational support as well as personal support. The healthcare providers need to recognize the emotional aspects of the women with G-DM, and make various efforts to promote the physical and psychological health of the G-DM patients.

• Korean Chemical Engineering Research
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• v.51 no.5
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• pp.580-586
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• 2013

In this paper, polymer composite membranes and ceramic composite membranes were prepared in order to compare differences in pervaporation performances relative to the support layers. PVDF was used for the polymer support layers, and $a-Al_2O_3$ was used for the ceramic support layers. For active layer was coated for PDMS, which is a rubbery polymer. The characterization of membranes were analysed by SEM, contact angle, and XPS. We studied performances relative to the composite membrane support layers in the ABE mixture solutions. The results of the pervaporation, the flux of the ceramic composite membrane was shown to be $250.87g/m^2h$, which was higher than that of polymer composite membranes, at $195.64g/m^2h$. However, it was determined that the separation factor of the polymer composite membranes was 31.98 which were higher than that of the ceramic composite membranes, at 20.66.

• Journal of The Korean Astronomical Society
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• v.37 no.5
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• pp.315-322
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• 2004

Several arguments have been presented in the literature to support the connection between radio halos and cluster mergers. The spectral index distributions of the halos in A665 and A2163 provide a new strong confirmation of this connection, i.e. of the fact that the cluster merger plays an important role in the energy supply to the radio halos. Features of the spectral index (flattening and patches) are indication of a complex shape of the radiating electron spectrum, and are therefore in support of electron reacceleration models. Regions of flatter spectrum are found to be related to the recent merger. In the undisturbed cluster regions, instead, the spectrum steepens with the distance from the cluster center. The plot of the integrated spectral index of a sample of halos versus the cluster temperature indicates that clusters at higher temperature tend to host halos with flatter spectra. This correlation provides further evidence of the connection between radio emission and cluster mergers.

• Asia pacific journal of information systems
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• v.29 no.1
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• pp.1-34
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• 2019

The concept of e-Government was first developed and implemented in industrialised countries. Consequently, it should not be assumed that this concept is automatically appropriate for developing countries. This study aims to examine the roles of perceived support quality and support satisfaction in the context of government-to-citizen (G2C) transactions towards behavioural intention and usage in developing countries. To test the proposed model, the official website of Kuwait Government Online Services (KGOS) was selected. A survey with a total of 628 responses was analysed using Structural Equation Modelling (SEM) to investigate the goodness of fit of the model and the underlying indicators. The findings confirm the significance of support quality perceived by citizens and provide insights to explain citizens' intention to use e-Government systems.

• Journal of Korean Academy of Nursing
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• v.45 no.5
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• pp.627-640
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• 2015

Purpose: The objective of this systematic review was to assess the effects of family support programs on caregiving burden, depression, and stress in family caregivers of people with dementia. Methods: A literature search was conducted of electronic databases to identify randomized controlled studies with family support programs done between 2000 and 2014. Studies published in English and/or Korean were included for the analysis with search strategies adapted from the Cochrane Dementia and Cognitive Improvement Group. Studies were rated for quality assessment by two independent reviewers using the appraisal checklist developed by Cochrane Reviews and Dissemination. Of 8,334 articles identified in the literature search, full texts of 76 articles that met the inclusion criteria were reviewed and 38 were found to include relevant outcomes. Results: Results from selected studies were pooled in statistical meta-analysis using Review Manager Software and heterogeneity between combined studies was assessed using the Chi-square test. Meta-analysis showed that the effect sizes of family caregiver support programs were small to medium for categories of caregiving burden (Hedge's g= - 0.17, 95% CI= - 0.30~ - 0.04), depression (Hedge's g= - 0.30, 95% CI= - 0.40~ - 0.20), and stress (Hedge's g= - 0.39, 95% CI= - 0.52~ - 0.25). Conclusion: The review results indicate that a support programs can assist family caregivers in reducing their psycho-emotional distress.