• Restorative Dentistry and Endodontics
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• v.26 no.5
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• pp.409-417
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• 2001

The purpose of this study was to investigate the influence of light irradiation over self-priming adhesive on dentin bonding. After acid etching the exposed dentin, a self-priming adhesive (Prime&Bond$^{\circledR}$NT dental adhesive system Dentsply DeTrey, GmbH, Konstanz, Germany) was applied and light irradiation was done for 20 sec with regular intensity (600 mW/$\textrm{cm}^2$) in group I and for 3 sec with ultra-high intensity (1930 mW/$\textrm{cm}^2$) in group III. No light irradiation was done over self-priming adhesive in groups II and IV. Composite resin was added on the self-priming adhesive and irradiated for 40 sec with regular intensity (600 mW/$\textrm{cm}^2$) in groups I and II and for 3 sec with ultra-high intensity (1930 mW/$\textrm{cm}^2$) in groups III and IV. To see the effect of light curing time on dentin bonding, another 3 group specimens were prepared. Without light-irradiation over self-priming adhesive, added composite resin was irradiated for 3, 6, or 12 sec with ultra-high intensity light. After bonded specimens were stored in 37$^{\circ}C$ distilled water for 24 hours, shear bond strength were measured using a universal testing machine (4202, Instron, Instron Co., U.S.A.) and fractured surfaces were examined under a stereomicroscope (SZ-PT Olympus, Japan). Statistical analysis were done with one-way, two-way ANOVA and chi-square test. The results were as follows : 1. The shear bond strengths from the groups irradiated over self-priming adhesive were significantly higher than those from the groups without irradiation (p<0.05). 2. There was no significant shear bond strength difference between regular intensity light irradiation groups and ultra-high intensity ones (p>0.05). 3. There was no significant shear bond strength difference among various irradiation time groups with ultra-high intensity ones (p>0.05). 4. In stereomicroscopic examination of fractured surfaces, adhesive-cohesive mixed failure mode was mostly seen in all groups, and there was no significant difference in failure mode among groups (p>0.05).

• Journal of Korean Biological Nursing Science
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• v.14 no.2
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• pp.112-121
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• 2012

Purpose: The purpose of this study was to investigate the level of self management behavior of patients with type 2 diabetes and to compare the factors influencing self management behavior between the elderly and adults. Methods: The participants consisted of 105 adults and 100 elderly who visited the outpatient department of a hospital from August to December 2011. Data was collected by questionnaires and analyzed using the SPSS/WIN 18.0. Results: The elderly showed higher mean scores of subcategory of self management behavior than adults. In stepwise multiple regression analysis, a total of 42% (adults), 52% (elderly) respectively of variance in self management behavior were accounted for by self-efficacy, perceived barriers, perceived benefits, yes or no smoking and regular exercise in adults and readiness, self efficacy, perceived benefits in the elderly. Conclusion: Therefore, a diabetics intervention program should be designed and provided as a tailored one for adults and elderly separately in Korea. In the strategy for adults with type 2 diabetes in the promotion of self efficacy, perceived benefits and reduction of perceived barriers, and correction of life habits such as smoking and exercise are needed, whereas in the elderly promotion of readiness, self efficacy, perceived benefits are required.

• Journal of Convergence for Information Technology
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• v.10 no.1
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• pp.109-119
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• 2020

The purpose of this study is to determine the variables that directly affect self-rated health and life satisfaction, and to examine the mediating effect of self-rated health on life satisfaction. The study utilized multiple regression to analyze the data obtained from interviewing 169 older adults aged 60 and over in G-gun in 2015. The results are as follows. First, the number of diseases had a negative effect on self-related health, whereas self-rated economic status and length of exercise time had a positive effect. Second, self-rated economic status, length of exercise time, regular meals, and the number of meals per day positively affect life satisfaction. Third, self-rated economic status and the length of exercise time affect life satisfaction by partially mediating self-rated health, whereas the number of diseases affected life satisfaction by totally mediating self-rated health. Based on the results, policies related to healthcare and provision of meals for older adults have been suggested.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.26 no.3
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• pp.166-175
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• 2019

Purpose: This study was done to investigate the degree of self-efficacy, transplant-related knowledge, and other factors affecting compliance with a therapeutic regimen for liver transplant recipients. Methods: Participants were 140 patients who had received a liver transplant at a tertiary hospital in Y City, Gyeongnam Province and made regular hospital visits as outpatients. A self-report questionnaire was used to collect the data and collection was done from December 4, 2017 to January 26, 2018. Data were analyzed using frequencies, percentages, means, and standard deviations, and t-test, ANOVA, Pearson's correlation coefficients. Multiple linear regression was performed using SPSS/WIN 21.0 program. Results: Participants scored $113.29{\pm}20.95$ (out of 150) on self-efficacy, $16.38{\pm}3.62$ (out of 18) on transplant-related knowledge, and $148.30{\pm}31.06$ (out of 200) on compliance with the therapeutic regimen. Analyzed of correlations among participant's self-efficacy, transplant-related knowledge, and compliance with the therapeutic regimen showed a significant positive correlation between self-efficacy and compliance with the therapeutic regimen (r=.64, p=.001), but no significant correlations were found between self-efficacy and transplant-related knowledge (r=-.01, p=.912) or between transplant-related knowledge and compliance with the therapeutic regimen (r=.06, p=.458). Multiple regression analysis showed that factors affecting compliance with the therapeutic regimen were state of re-transplantation (${\beta}=.17$, p=.016) and self-efficacy (${\beta}=.53$, p=.001). Conclusion: There is a need to apply a differentiated nursing intervention program considering the differences in patients' self-efficacy, transplant-related knowledge, and compliance with the therapeutic regimen.

• Journal of the Korea Convergence Society
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• v.9 no.12
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• pp.401-409
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• 2018

The purpose of this study was to examine the oral health care and self-rated health status of adults visiting dental clinics in the region of Busan and influential factors for their dental fear from January to May, 2017, in an effort to obtain some information on how to relieve fear. As for dental fear, adults who were in their 30s, who were homemakers and whose monthly income ranged from 4 to 4.99 million won. In regard to fear according to oral health care, dental fear caused by the treatment avoidance factor was stronger among the adults who didn't receive dental checkups and who brushed their teeth in the wrong way. Dental fear that was attributed to the physiological reaction factor and the stimuli-inducing factor was severer among the adults who didn't receive dental checkups and who had no scaling experience. Overall fear was severer among the adults who didn't receive dental checkups and who changed their toothbrushes every four or more months. The factors that affected dental fear were self-rated health status, self-rated oral health status, gender, age, whether to receive dental checkups on a regular basis or not, and oral health education experience. Therefore in order to alleviate dental fear, self-rated health status should be improved, and the kind of system that encourages regular dental checkups and provides oral health education should be prepared.

• Communications of Mathematical Education
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• v.23 no.1
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• pp.1-38
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• 2009

This study investigates the relationships of perfectionism and the affective traits(academic self-concept, learning attitude, interest, mathematical anxiety, learning habits) in mathematics between the gifted students and the regular students in Korean Middle Schools. The findings of this study can be used for the understanding of the gifted students, and as data or resources for counsellors when they advise the gifted students on enhancing study strategies and developing future courses. This study was investigated by measuring the relationships between perfectionism and the affective traits on mathematics between two groups. Here, the correlation analysis, t-test, and regression analysis of the SPSS for Window 12.0 Program were applied to measure the differences of both groups. Therefore, there were no differences in perfectionism between the gifted students and the regular students. But the self-oriented perfectionism of the gifted students appeared higher compare with regular students. The affective traits in mathematics of the gifted students appeared more positive compare with regular students. There were a few correlations between the perfectionism and the affective traits in mathematics at two group all. however the self-oriented perfectionism and the affective traits in mathematics showed to correlation. There were several suggestions based on the results of this study. First, the results showed that professional assistance is needed for the gifted students so that their perfectionism flows positively into developing their gifts. Secondly, the results suggested that specialized mathematical program reflecting on the affective traits of the gifted students in mathematics should be offered.Lastly, tthe results of this study suggested a researcher regarding relevance with perfectionism and affective traits regarding subject shall be performed more. The result of research shall be included to contents of training for the gifted students and their parents.

• Journal of Korean Public Health Nursing
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• v.26 no.3
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• pp.465-477
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• 2012

Purpose: The purpose of this study was to investigate the influence of breakfast characteristics of university students on their self-regulated learning, attentional control, and fatigue in order to provide-basic data for establishing desirable eating habits, self-regulated learning skills using attentional control, and advisable learning habits of university students. Method: The level of fatigue was estimated using the Visual analogue scale (VAS) and Critical flicker frequency (CFF). Attentional control was measured using the Attentional Control Questionnaire (ACQ) adapted by Yoon. Self-regulated learning was surveyed by the Self-Regulated Learning Test developed by Chung. Data from atotal of 142 university students were collected from November 30 to December 9, 2011. Result: 69% of the subjects skipped their breakfast. Attentional control has a negative correlation with fatigue (r=-.179, p=.033) and a positive correlation with self-regulated learning (r=.352, p<.001). The multiple regression model of self-regulated learning consists of attentional control (t=3.218, p=.002), commuting time (t=-3.076, p=.003), understanding the importance of breakfast (t=-2.413, p=.008), and skipping breakfast(t=-2.195, p=.030) and its R-square was 21.8%. Conclusion: Learning efficiency of university students should be improved by means of attentional control, which is related to self-regulated learning. Also, it is essential for university students to establish healthy lifestyles including regular eating habits and attentional control, in order to improve their self-regulated learning.

• The Journal of Korean Society for School & Community Health Education
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• v.23 no.1
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• pp.1-16
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• 2022

Background & Objectives: Self-rated health has been widely used to evaluate health status and accepted as a subjective measurement of quality of life. This study aimed to analyze the associations between self-rated health, health promotion behaviors, and mental health factors and suggest the approaches to improve health status among university students. Methods: Two thousand six hundred seventy-seven students who had stayed at dormitories on campus participated in the DU health survey by self-reported questionnaire from April 10 to 14, 2017. Multivariate logistic regression analysis was performed to estimate the odds ratios and 95% confidence intervals of association of self-rated health with health-related factors among male and female students. Results: 38.6% of the respondents reported good self-rated health. Male and first-year students were more likely to report good self-rated health than female and third-year students. There were significant differences in sex, grade, health problems, BMI, sleeping hours, eating breakfast, consumption of fruits and vegetables, physical activity (regular walking, strength exercise, moderate exercise, vigorous exercise), perceived stress, depression, and suicide thought (p<0.05). Conclusion: Although health promotion programs for university students are essential to support their adaptation to campus life and academic achievement, evidence-based health programs to encourage their participation are still insufficient. Therefore, it should establish a campus-based health policy and develop health promotion programs to increase self-rated health levels and prevent mental health problems for university students.

• Korean Journal of Occupational Health Nursing
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• v.32 no.2
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• pp.39-48
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• 2023

Purpose: This study aimed to understand how changes in income due to the COVID-19 pandemic have affected the health behavior and mental health status of self-employed individuals. Methods: We compared the health behavior and mental health status of regular wage workers and self-employed individuals with no change in income, with that of self-employed individuals with reduced income due to the spread of COVID-19. Results: Smoking status, average amount of smoking per day, changes in the amount of smoking and drinking due to COVID-19, drinking frequency per year, monthly binge drinking experiences, subjective stress, and suicidal thoughts experienced by self-employed individuals with decreased income were not only higher than those of wage workers and self-employed individuals with maintained income, but their happiness index was also lower than the latter group. Conclusion: This study suggests that the change in total household income due to COVID-19 adversely affects the health behavior and mental health status of self-employed individuals. However, COVID-19-related policies focus only on economic loss compensation, and the health behavior and mental health management for self-employed individuals is insufficient. Therefore, it is necessary to establish policies for health behavior and mental health management of self-employed individuals.

• Korean Journal of Labor Studies
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• v.24 no.1
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• pp.157-196
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• 2018

This study analyzes non-standard workers' attitudes and behaviors towards standard workers' strikes using the case of a joint strike held by journalists at KBS and MBC in 2012. Tracing the process since 2008 by which a conservative government has tried to control the press and regular journalists have collectively resisted against it, we put our analytical focus on two major groups of freelance broadcast professionals: independent producers and writers in current affairs. Specifically, we examine 1) how they perceived and responded to a series of regular journalists' struggle to protect journalistic value, 2) how such perception of and response to regular journalists could be developed, and 3) how (de)solidarity could form and then deepened between freelance and regular journalists in the 2012 Media Strike. Our findings show that the ways in which regular journalists had controlled freelance journalists at work affected the relationship between class-based and occupation-based rationality freelance journalists held in their minds. Independent producers, who had developed a strong class-based rationality in response to the coercive input-output control, showed cynicism about regular journalists' strike pointing out their hypocrisy and contradiction. In contrast, freelance writers accommodated and joined the strike by regular workers in the spirit of solidarity based on occupational rationality which had developed from normative, process control. Our paper ends with theoretical and practical implications.