• Journal of Korean Society of Water and Wastewater
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• v.26 no.6
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• pp.883-888
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• 2012

Anode electrode is one of the most important factors in microbial fuel cell (MFC). This study was conducted to investigate the effects of mediator as methylene blue (MB) and electrode surface area on the power density of MFC with sponge and carbon nano tube (CNT) electrode (SC). The SC electrode with MB (MC) showed the maximum power density increased from 74.0 $mW/m^2$ to 143.1 $mW/m^2$. The grid shaped sponge and CNT (GSC) electrode showed the maximum power density of 209.2 $mW/m^2$ due to the increase of surface area from 88.0 to 152.0 $cm^2$. The GSC electrode with MB (GMC) revealed the maximum power density of 384.9 $mW/m^2$ which was 5.2 times higher than that obtained from the MFC with SC. Therefore MB and increase of surface area led to enhance the performance of microbial fuel cell such as power density.

• Journal of Wetlands Research
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• v.10 no.1
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• pp.77-87
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• 2008

This study attempted to characterize and compare wetland conflicts in Korea and United States, which caused serious social and environmental effects. First of all, such 3 different survey methods as open-ended questionnaires, Likert-type and ranking questionnaires were adopted for 5 selected study sites in Korea and 12 cases in the U.S. in order to understand and measure these effects. 53 subjects were contacted for open face-to-face interviews in the U.S. and 258 in Korea and overall 567 disputants were for other questionnaires. Analyses of survey results revealed that disputants involved in the wetland conflicts had developed different concept of conflict frames. The study also identified the reframing is the key for conflict resolution Based on these results, a idea of public mediator was suggested to resolve and mediate conflicts.

• The Journal of the Korea Contents Association
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• v.14 no.11
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• pp.486-496
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• 2014

The purpose of this study was to examine the role of self-directed learning readiness between career maturity and academic stress. To examine it, a total of 582 cyber universities were participated in this study, and correlation analysis and regression analysis were conducted. Therefore, career maturity was significantly positive correlated with self-directed learning readiness and it was significantly negative correlated with academic stress. In addition, it was revealed that self-directed learning readiness mediated between career maturity and academic stress. Based on the results, we discussed the strategies for reducing academic stress for cyber students, limitations and suggestions for future researches were also discussed.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2000.05a
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• pp.52-55
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• 2000

The effects of environmental conditions, initial dissolved oxygen concentrations, pH, and the presence of electron carrier vitamin B$_{12}$ , on the reduction rate of TNT by Fe$^{0}$ was Quantitatively analyzed using a batch reactor. In all experiments, TNT reduction was best described with a first order reaction and the reduction rate decreased with the increase in the initial DO concentration. However, the specific reaction rate did not decrease linearly with the increase in the initial DO concentration. In the presence of HEPES buffer 0.2 and 2.0 mM(pH 5.7$\pm$0.2), the specific reaction rate increased more than 5.8 times, which showed reduction rate is rather significantly influenced by the pH of the solution. To test the possibility of reaction rate enhancement, well-known electron carrier(or mediator), vitamin B$_{12}$ has augmented besides Fe$^{0}$ . In the presence of 8.0 $\mu\textrm{g}$/L of vitamin B$_{12}$ , the specific reaction rate increased as much as 14.6 times. The results indicate that the addition of trace amount of vitamin B$_{12}$ can be a promising rate controlling option for the removal of organics using a Fe$^{0}$ filled permeable reactive barrier.

• The Korean Journal of Physiology and Pharmacology
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• v.22 no.2
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• pp.193-201
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• 2018

Connective tissue growth factor (CTGF) is a novel fibrotic mediator, which is considered to mediate fibrosis through extracellular matrix (ECM) synthesis in diabetic cardiovascular complications. Statins have significant immunomodulatory effects and reduce vascular injury. We therefore examined whether fluvastatin has anti-fibrotic effects in vascular smooth muscle cells (VSMCs) and elucidated its putative transduction signals. We show that advanced glycation end products (AGEs) stimulated CTGF mRNA and protein expression in a time-dependent manner. AGE-induced CTGF expression was mediated via ERK1/2, JNK, and Egr-1 pathways, but not p38; consequently, cell proliferation and migration and ECM accumulation were regulated by CTGF signaling pathway. AGE-stimulated VSMC proliferation, migration, and ECM accumulation were blocked by fluvastatin. However, the inhibitory effect of fluvastatin was restored by administration of CTGF recombinant protein. AGE-induced VSMC proliferation was dependent on cell cycle arrest, thereby increasing G1/G0 phase. Fluvastatin repressed cell cycle regulatory genes cyclin D1 and Cdk4 and augmented cyclin-dependent kinase inhibitors p27 and p21 in AGE-induced VSMCs. Taken together, fluvastatin suppressed AGE-induced VSMC proliferation, migration, and ECM accumulation by targeting CTGF signaling mechanism. These findings might be evidence for CTGF as a potential therapeutic target in diabetic vasculature complication.

• Asian Journal of Innovation and Policy
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• v.7 no.2
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• pp.310-337
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• 2018

Adoption of mobile learning (m-learning) is not new in Malaysian oil and gas industry, with heavy investment into research and development to train the workers. Nevertheless, the low application of learnt skills on the job remains an emergent research area where there is a missing link on the effects of m-learning and effective organisational learning and implication on its training transfer. The result of this quantitative research revealed that all variables in m-learning were found to have a positive relationship with the effective organisational learning, and there is evidence of training transfer as a mediator of the relationship between self-directed learning, training design, work environment and effective organisational learning. However, there were some discrepancies in the extend of training transfer between trainee characteristics and organisational learning. As such, some important issues emerged which challenge the importance of evaluating workers' readiness and transfer for a successful implementation of m-learning towards developing effective organisational learning.

• Journal of Families and Better Life
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• v.27 no.2
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• pp.281-292
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• 2009

This study was designed to investigate the effects of children's self-regulation on their friendships and their adjustment to school adjustment. Especially, this study was focused to determine whether children's friendships played a role as ain mediator among the other each variables. The subjects were 212 children in the 5th grade at from 3 elementary schools in located at U city. The data were analyzed by factor analysis, correlation analysis, and path analysis, using SPSS (ver. 14.0) program and LISREL (ver. 8.30) program. The main findings of study were, first, that there were correlations among the children's self-regulation, friendships, and school adjustment, and second, it was found that children's self-regulation influenced on their friendships and their school adjustment. Specially, children's friendships played a role in mediating their self-regulation and their school adjustment.

• Journal of muscle and joint health
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• v.22 no.3
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• pp.185-194
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• 2015

Purpose: The purpose of this study is to determine the mediator or moderator effect of clinical nurses' emotional intelligence on the relationship between the emotional labor and psychological well-being. Methods: Data was collected from 240 nurses in tertiary hospitals located in B city using structured questionnaires. Data was analyzed with descriptive statistics, Pearson's correlation coefficient and hierarchical multiple regression using the SPSS program. Results: Clinical nurses' emotional intelligence had a significant correlation with emotional labor (r=-.13, p=.039) and psychological well-being (r=.52, p<.001). Also, clinical nurses' emotional intelligence showed mediating effects between the emotional labor and psychological well-being. However, emotional intelligence did not show moderating effects. Conclusion: The results of this study show that the clinical nurses' emotional intelligence has an important influence on nurses' emotional labor and psychological well-being. This finding points to the importance of emotional intelligence to increase psychological well-being and suggests that the hospital should develop education and training programs to enhance nurses' emotional intelligence and promote clinical nurses' psychological well-being.

• Journal of the Korean Home Economics Association
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• v.48 no.5
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• pp.61-72
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• 2010

This study examined the effects of maternal parenting, children's self-esteem and emotion regulation strategy on emotion regulation. Data were collected from 493 5th and 6th graders. The results were as follows: Firstly, maternal authoritarian and permissive parenting directly affected children's maladaptive emotion regulation, while maternal affectionate and permissive parenting directly affected children's adaptive emotion regulation. Secondly, children's selfesteem directly affected both their maladaptive and adaptive emotion regulation, while also acting as a mediator between maternal parenting and children's maladaptive and adaptive emotion regulation. Children's cognitive reappraiser strategy positively affected adaptive emotion regulation, but emotion suppressive strategy negatively affected adaptive emotion regulation. These emotion regulation strategies played a mediating role between maternal parenting or children's self-esteem and adaptive emotion regulation.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.5
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• pp.833-844
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• 2001

The purposes of this study were 1) to identify the effects of store image and stores entertainment environment image on attitude toward store and store patronage intention through emotions toward store, and 2) to identify the effects of sensation-seeking tendency, hedonic shopping orientation and shopping motives on store image, stores entertainment environment image, attitude toward store and store patronage intention. The data were collected from 416 female adolescents who visited stores located in Dongdaemoon, Seoul, via self-administered questionnaires, and were analyzed by frequency, factor analysis, multiple regression and path analysis. The results of this study were as follows : (1) According to path analysis, store image and stores entertainment environment image affected emotions toward store and attitude toward store, and affected store patronage intention through a mediator, emotions toward store. (2) Among the factors related to store images, stores entertainment environment image had the greatest effect on store patronage intention. (3) Sensation-seeking tendency, hudonic shopping orientation and shopping motives affected store image, stores entertainment environment image, emotions toward store and attitude toward store directly and indirectly through store image and stores entertainment environment image. (4) The most significant factor in explaining all these relations was hedonic shopping orientation.