• Sleep Medicine and Psychophysiology
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• v.13 no.2
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• pp.59-66
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• 2006

The objective of this study was to investigate the relationship between insomnia severity, depression, anxiety, and anxiety sensitivity and to find out the explanatory variables that account for the insomnia severity among depression, anxiety, and anxiety sensitivity in general population. 95 mentally healthy volunteers who visit health promotion center of Kangbuk Samsung hospital for their regular medical examination were requested to complete Athens Insomnia Scale, Beck Depression Inventory, State-Trait Anxiety Inventory, and Anxiety Sensitivity Index. Association between total scores of Athens Insomnia Scale and other variables (total scores of Beck Depression Inventory excluded item 16, total scores of State Anxiety, total scores of Trait Anxiety, and total scores of Anxiety Sensitivity Scale) was assessed individually with partial correlations adjusted by age and then together using multiple regression analysis. The total scores of Athens Insomnia Scale were significantly associated with total scores of Beck Depression Inventory excluded item 16 (r=0.541, p<0.001), total scores of Trait Anxiety (r=0.642, p<0.001), total scores of State Anxiety (r=0.267, p<0.05), and total scores of Anxiety Sensitivity Index (r=0.312, p<0.01). Total scores of trait anxiety showed the highest correlation with the total scores of Athens Insomnia Scale and was the significant predictor to total scores of Athens Insomnia Scale among the other predictor variables (p<0.001). These results show that insomnia severity is positively correlated with depression, anxiety, and anxiety sensitivity. The correlation was strongest with trait anxiety. In addition, our results suggest that trait anxiety is associated with insomnia severity in general populations.

• Sleep Medicine and Psychophysiology
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• v.17 no.2
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• pp.91-99
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• 2010

Objectives: Deficit schizophrenia (DS) constitutes a disease separate from non-deficit schizophrenia (NDS). The aim of the current study was to compare the quantitative EEG and low resolution electromagnetic tomography (LORETA) imaging between DS and NDS. Methods: This study was performed by 32 channels EEG for 42 schizophrenia patients who we categorized into DS and NDS using proxy instrument deficit syndrome (PDS). We performed the absolute power spectral analyses for delta, theta, alpha, low beta and high beta activities. We compared power spectrum between two groups using Independent t-test. Partial correlation test was performed with clinical parameters. Standardized LORETA (sLORETA) was used for comparison of cortical activity, and statistical nonparametric mapping (SnPM) was applied for the statistical analysis. Results: DS showed significantly increased delta and theta absolute power in fontal and parietal region compared with NDS (p<0.05). Power spectrum showed significant correlation with 'anergia' and 'hostility/suspiciousness' subscale of brief psychiatric rating scale (BPRS)(p<0.05). sLORETA found out the source region (anterior cingulate cortex/limbic part) that delta activity was significantly increased in DS (p=0.042). Conclusions: DS showed different cortical activity compared with NDS. Our results may suggest QEEG and LORETA could be the marker in differentiating between DS and NDS.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.5
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• pp.93-101
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• 2019

This study was conducted to investigate the mediating effects of career preparation behavior on nursing professionalism related factors of nursing students. The subjects were 265 students in the first, second, third, and fourth grades of nursing schools in the Gyeongbuk area. Data were collected from May 7, 2018 to May 25, 2018 using structured questionnaires. Data were analyzed by t-tests, ANOVA, Pearson's correlation, and multiple regression analysis based on descriptive statistics (frequency, percentage, mean, standard deviation) using the SPSS 22.0 program. The results of this study showed that career identity and career attitude maturity have a partial mediation effect on career preparation behavior in relation to nursing professionalism. Career attitude maturity (${\beta}=.38$), career identity (${\beta}=.17$), and career preparation behavior (${\beta}=.14$) were significant factors affecting nursing professionalism and the explanatory power of these variables was 19%. Therefore, it is necessary to develop and apply educational methods to improve career preparation behaviors and enhance professionalism of nursing students. In addition, there is a need for follow-up research on the structural relationship between career preparation behaviors, which are concrete and practical actions related to nurse's careers, and how they affect other career-related variables.

• Journal of Convergence for Information Technology
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• v.12 no.5
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• pp.51-61
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• 2022

The purpose of this study was to identify whether need of cognition have a mediating effect on media multitasking on learning engagement in online education. The subjects were 168 university students who had received online education for more than one semester, and data were collected using questionnaires on media multitasking, need of cognition, and learning engagement. For data analysis, correlation, hierarchical regression and Sobel test were performed using SPSS WIN 20.0 program. As a result of the study, there was a significant positive correlation between media multitasking and learning engagement (r=.52, p<.001), and a between need of cognition and learning engagement(r=.39, p<.001). Media multitasking had a significant effect on learning participation (β=.52, p<.001), and explanatory power was 27%. When need of cognition was input, the effect of media multitasking on learning engagement decreased (β=.52 ⟶ .44), so it was found that need of cognition had a partial mediating effect in the effect of media multitasking on learning engagement(Z=2.77). p<.01). Therefore, it is suggested to use online contents with learning to organizing a g a lesson syllabus for distance education, and to organize activities promoting media multitasking activities. Also, it is proposed to develop and apply various teaching strategies to promoting the need of cognition in the distance education.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.667-676
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• 2023

This study is a descriptive research to identify the effects of job stress, competency, and emotional intelligence on burnout and the mediating effects of competency and emotional intelligence in Wee counseling professionals. The subjects of the study were 104 counseling professionals in charge of Wee work in the G-do area, and data were collected from February to April 2023. The collected data were analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation, regression analysis, and Sobel test. As a result of the study, job stress and competency of Wee counseling professionals had a significant effect on burnout, and competency had a partial mediating effect in the relationship between job stress and burnout, and the explanatory power was 45.6% (Z=2.96, p=. 003). In addition, job stress and emotional intelligence had a significant effect on burnout, and the explanatory power was 44.8%, and there was no mediating effect of emotional intelligence. Based on these results, we can contribute to the reduction of burnout by interventions that lower job stress and improve competency and emotional intelligence of Wee work counseling professionals, in addition, it is suggested that a systematic plan should be established and provided to include interventions for competency improvement in job stress reduction interventions.

• Journal of Industrial Convergence
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• v.22 no.3
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• pp.101-110
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• 2024

This study was conducted to confirm the relationship between perception of patient safety culture, critical thinking propensity, and practice of standard precaution among nurses in small and medium-sized hospitals. The research subjects were nurses from three small and medium-sized hospitals located in S City and C City who understood the purpose of the study and agreed to participate. The final study subjects were 158 nurses. The data were collected from January 5, 2020 to March 31, 2020, and descriptive statistics, t-test, one-way ANOVA, correlation, regression analysis, and Sobel test of the collected data were performed using SPSS/WIN26.0 Program. As a result of the study, nurses' practice of standard precaution showed a significant positive correlation with perception of patient safety culture (r=.524, p<.001) and critical thinking disposition (r=.471, p<.001). Critical thinking propensity was found to have a partial mediating effect in the relationship between perception of patient safety culture and practice of standard precaution. Based on the results of this study, repeated research can be conducted in the future, and can be used to develop and apply educational programs that can improve nurses' practice of standard precaution.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.9
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• pp.322-333
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• 2017

The purpose of this study was to examine the impact of the quality of life of emergency medical workers on their stress and job satisfaction. The subjects in this study were 209 selected emergency medical workers who worked shifts in the emergency medical centers of general hospitals located in two different provinces. A survey was conducted from March 1 to June 30, 2015. The collected data were analyzed by SPSS 20.0 for Windows usingfrequency analysis, factor analysis, Cronbach alpha coefficients, descriptive statistics, correlation analysis and multiple regression analysis. The findings of the study were as follows: First, the quality of life was correlated with stress and job satisfaction. Second, the quality of life was found to have affected the levels of physical and psychological stress(p<.001). Third, the quality of life was found to have exercised an influence on job satisfaction. Job satisfaction was under the significant influence of post-sleep recovery, difficulty in falling asleep, difficulty in getting up and difficulty in sleep maintenance. Fourth, psychological stress was found to have had a partial impact on job satisfaction(p<.01). Given the findings of this study, an appropriate increase in staffing and the guarantee of proper sleeping hours are necessary to improve the quality of sleep. Moreover, the development of programs that aim at relieving physical and psychological stress is required. Thus, various institutional measures should be taken to boost job satisfaction.

• Trans-
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• v.6
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• pp.97-127
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• 2019

This study investigated the specific effects of dance themed movies on dance students in their passion for dance and affect. The related data is generated by choosing a method of Convenience Sampling and used a sample of 112 dance students in high school of arts which located in Seongnam-si, South Korea. The dance students divided into 3 group of school year and also 2 group of gender. The dance themed movies which are used in this research are First Position, Billy Elliot and Mao's Last Dancer. Also, the dance students were asked to answer the survey which are based on the Self-administration. In order to obtain several findings below, Frequency analysis, Exploratory factor analysis, Reliability analysis, t-test, ANOVA, Correlation analysis and Linear structural relation model were applied to the gathered data using statistics utility SAS 9.4. First, there was a significant difference between the school years in the passion for dance and affect of students after watching movies. Second, there was a significant difference in students' affect depended on their majors (dance major is divided into three specialized major which are ballet, korean dance and modern dance). Third, there was a significant difference in the passion for dance and students' affect which is irreverent to their dance career (such as years they have learned dance). Forth, there was a significant difference in the passion for dance and negative affect of 'dance' students after watching movies. To summarize, the findings demonstrate that there is a partial difference, specially significant effects on their negative affect in the dance passion and affect of dance students depended on their characteristics after watching dance themed movies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.1
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• pp.297-303
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• 2019

This study examines the relationships among ego resilience, social support, and psychological well-being of adolescents. In addition, we verify the mediation effect of social support on the relationship between ego resilience and psychological well-being so as to find ways to improve the psychological well-being of adolescents. For this study, I conducted a survey at middle schools in Seoul and Incheon and collected 289 answered questionnaires. For analyses of the survey results, frequency analysis, reliability analysis, correlation analysis, and hierarchical regression analysis were carried out using SPSS 23.0. The results confirmed significant correlations among ego resilience, social support, and psychological well-being of adolescents. Furthermore, social support was found to have a partial mediation effect on the relationship between ego resilience and psychological well-being of adolescents. For improving the psychological well-being of adolescents based on the results of this study, an in-depth counseling program that can strengthen ego resilience in adolescents should be developed and actively used in the education field. Furthermore, various efforts should be made to improve the social support of adolescents, such as the development of a communication program to help students. Specifically, this program should aim to assist students connect with teachers and seniors by strengthening social support from friends and improving the functions of family to provide social and psychological supports.

• Journal of Korea Port Economic Association
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• v.38 no.3
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• pp.87-104
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• 2022

Considering the complex structure and high volatility in the shipping market, it is important to investigate the connectedness amongst influencing factors. This study explores the dynamic relationship between supply-demand factors and shipping freight indices. We choose Capesize and Panamax in the bulk carrier market and use quarterly data of GDP, world fleet, BCI, and BPI from 1999 to 2021. Applying the wavelet analysis and wavelet Granger causality test, the simultaneous examination of co-movement and causality between two factors and the shipping market in both the time and frequency domains is achieved. We find that co-movement and causality vary across time and frequencies, thereby existing dynamic relationships between variables. Second, compared to multiple coherencies using demand and supply factors together, partial coherencies indicate noticeable causalities. It implies that analyzing demand and supply factors separately is essential. Finally, shipping freight indices show a high correlation with the demand factor in a good market and with the supply factor in a bad market. Generally, GDP positively leads shipping freights in the recovery phase while the world fleet negatively leads shipping freights in the downturn. The research is meaningful in that the rarely-applied wavelet analysis is adopted in the shipping market and that it gives a reasonable ground to explain the role of supply and/or demand factors in different phases of the market cycle.