• The Journal of Korean Academic Society of Nursing Education
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• v.21 no.2
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• pp.190-201
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• 2015

Purpose: This study was conducted to explore the influence of academic institutional interest, open parent-adolescent communication, social (friend) support, and existential spiritual well-being on suicidal ideation of college students. Methods: The research design was descriptive survey research involving 285 college students in city G. Data was collected from May 18, 2011 to November 2, 2011 and analyzed using descriptive statistics, t-test, one-way ANOVA, Pearson correlation coefficient, and hierarchical regression analysis. Results: The findings reveal that suicidal ideation of college students was low, i.e., average score was $9.2{\pm}3.65$ (possible range 5~25). This study determined that suicidal ideation is negatively correlated with interest on the part of the academic institution, open parent-adolescent communication, social support from friends, and existential spiritual well-being. The extent of existential spiritual well-being was a significant predictor of suicidal ideation, controlling for general characteristics variables (gender, number of close friends, first supporter) and institutional interest, open parent-adolescent communication, and social support. Existential spiritual well-being accounted for 50% of the explanation of suicidal ideation of college students. Conclusion: Based on the outcomes of this study, designing an intervention program that emphasizes existential spiritual well-being in order to decrease suicidal ideation of tertiary education students is strongly recommended.

• The KSFM Journal of Fluid Machinery
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• v.17 no.5
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• pp.43-53
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• 2014

This paper presents a the study on air curtain system of top and bottom bi-directional jet air discharge for blocking the spread of smoke in case of tunnel fire. The five kinds different air curtains of A, B, C, D, and E of models for various performance tested after manufactured. A results of the various performance test obtained the best efficiency from E model air curtain. And optimize the injection angle of the air curtain nozzle through the three-dimensional computational fluid dynamics (CFD) analysis and analyzed the effects of external pressure of tunnel. and also single factor design have been applied. At present, our attention is focused on the velocity distribution(flow width and flow position) of 1.5m on the ground in tunnel. Also, analyzed the influence of draft in the tunnel. Detailed effects of discharge angle of air curtain and velocity at nozzle exit are discussed.

• Asian Pacific Journal of Cancer Prevention
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• v.14 no.4
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• pp.2393-2399
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• 2013

Objective: Mitochondrial DNA (mtDNA) is considered a hotspot of mutations in various tumors. However, the relationship between microsatellite instability (MSI) and mtDNA copy number alterations in lung cancer has yet to be fully clarifieds. In the current study, we investigated the copy number and MSI of mitochondrial genome in lung carcinomas, as well as their significance for cancer development. Methods: The copy number and MSI of mtDNA in 37 matched lung carcinoma/adjacent histological normal lung tissue samples were examined by polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) assays for sequence variation, followed by sequence analysis and fluorogenic 5'-nuclease real-time PCR. Student's t test and linear regression analyses were employed to analyze the association between mtDNA copy number alterations and mitochondrial MSI (mtMSI). Results: The mean copy number of mtDNA in lung carcinoma tissue samples was significantly lower than that of the adjacent histologically normal lung tissue samples (p<0.001). mtMSI was detected in 32.4% (12/37) of lung carcinoma samples. The average copy number of mtDNA in lung carcinoma samples containing mtMSI was significantly lower than that in the other lung carcinoma samples (P<0.05). Conclusions: Results suggest that mtMSI may be an early and important event in the progression of lung carcinogenesis, particularly in association with variation in mtDNA copy number.

• Journal of Korean Biological Nursing Science
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• v.15 no.3
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• pp.122-132
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• 2013

Purpose: The purpose of this study was to evaluate the effect of periodic video education on knowledge about hemodialysis, patient role behavior and the physiologic index in patients with hemodialysis. Methods: One-group pretest-posttest design was applied. A total of 50 patients with hemodialysis at a university hospital hemodialysis unit in Daegu participated. Periodic video education about kidney function, diet, arteriovenous fistula management, medication, and exercise was administered to them for 12 weeks at intervals of 2 weeks. Before and after the education, the participants completed the self-administered questionnaires of knowledge about hemodialysis and patient role behavior and the measures of serum potassium and phosphorus concentration, weight gain between hemodialysis sessions, and adequacy of dialysis (Kt/V). Statistical analysis was performed using paired t-test. Results: Knowledge about hemodialysis and patient role behavior were significantly different between before and after education (p<.01). For the physiologic index, serum potassium concentration and weight gain between hemodialysis sessions were not significantly different but the serum phosphorus concentration and Kt/V were significantly different between before and after education (p<.05). Conclusion: The results suggest that the periodic video education for patients with hemodialysis contributed to the change and improvement in knowledge about hemodialysis, patient role behavior, and the physiologic index.

• Journal of the Korea Fashion and Costume Design Association
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• v.15 no.3
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• pp.137-156
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• 2013

The purpose of this study is to analyze the general status of wearing clothes and clothing purchase of middle-aged women in the 40's to 50's, the patterns and colors of clothes they prefer, clothing preference related with fitting or such, and also complaints. And this paper also divides the middle-aged women into those in the 40's and 50's to analyze how they differ in terms of the apparel brands and fitting they prefer and also the status of wearing clothes. For the research, a survey was performed to 350 women, and the survey data went through x2 and t-test analysis by using SPSS 20.0 to examine significant difference. The results of this study are as follows: the women in the 40's included as the subjects showed a high frequency of clothing purchase from casual brands or SPA brands and regarded design to be important at the clothing purchase. Meanwhile, the women in the 50's indicated a higher frequency of clothing purchase of middle-aged women's apparel brands, outdoor brands, madam clothes, or designer brands and thought activity to be crucial at the clothing purchase. As the women in the 40's and 50's showed difference in the brands they preferred, particularly the fitting indicated difference in terms of dissatisfaction. While those in the 40's preferring and buying young casual showed particularly more fitting problems in the arm-hole girth, upper arm circumference, bust size, and thigh or hip area, those in the 50's indicated fitting problems in the hip circumference or waist measurement. It is expected that this study will be used as foundational data to set up the target age by related apparel companies or develop clothes with great size fitting and design satisfaction.

• Journal of the Korean Society of Food Culture
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• v.26 no.6
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• pp.531-538
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• 2011

This study considered the whole intake patterns and realities of consumption of instant noodles on sales targeting children and adolescents. Based on a total of 1021 subjects, data from self-administrated questionnaires were collected and analyzed using comparative statistical analysis, including frequency, chi-square, t-test, and one-way ANOVA. Results of the study were as follows. The preference levels for instant noodles by children and adolescents were 5.25, thereby showing a more than moderate preference. Middle school boy students' preference for instant noodles was the highest. The main reason for preferring instant noodles was taste and convenience. The main reason for disliking instant noodles was poor nutrition and likelihood of becoming fat. The intake of instant noodles was the highest between lunch and dinner with a frequency of once to twice per week. Content of soup powder given taking instant noodles was the largest in having putted all. The soup quantity of being left given taking instant noodles was possessed the majority in almost not eating soup. The main reason for not consuming soup was being full or concerns for health. A significant difference was observed in preference level for instant noodles and in intake patterns depending on the respondents' general characteristics. Limitations and future research directions are also discussed.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.22 no.3
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• pp.264-274
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• 2012

Evaluation on the environmental noise is carried out by surveying subjective response of residents with physical measurement of noise during long period in field. Particularly field survey is used to make regulations from the analysis on how many people are annoyed for specific noise level, and laboratory test used to analyze the relationship between physical parameters of noise and subjective responses. In the laboratory controlling the variables is easy but the results could be biased because the condition in room would be different with field. Most of all noise exposure time is considered to be different with real situation, and this study aimed to evaluate the subjective response by exposure time of transportation noise, by applying three kinds of variable how much they give effects on the annoyance as the exposure time is operating condition, windows type and sound level. As a result there was somewhat difference between operating type and annoyance, which is caused by the sound characteristics operated in different condition. However the window type didn't give much effect to the annoyance as much as sound type. This means that the subjective response could give similar result by exposure time even for different window types. Most of all, the main factor affecting subjective response is considered to be the sound level and the exposure time.

• Korean Journal of Adult Nursing
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• v.25 no.6
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• pp.725-735
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• 2013

Purpose: The purpose of this study was to investigate the levels of burden, family resilience and adaptation of caregivers of elderly patients with dementia, and further to identify factors influencing their adaptation. Methods: A cross-sectional descriptive study was designed. Data were collected from questionnaires distributed to 131 family caregivers of elderly patients who visited at the Centers for Dementia in Seoul during 2012~2013. The data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation analysis, and stepwise multiple regression. Results: The average age of the care giving subjects was 63.58, and 31.3% were male, and 41.2% were the spouses. Statistically significant relationships were found between burden and adaptation (r=-.38, p<.001), and between family resilience and adaptation (r=.52, p<.001), and between burden and family resilience (r=-.35, p=.001). Thirty percent of adaptation was explained by burden and family resilience. The most influencing factor to adaptation was family resilience which explained about 27% of the variance. Conclusion: The results of the study clearly indicate that family resilience explains better than burden on adaptation of family caregivers. Thus, to develop more effective nursing intervention for family caregivers of elderly patients with dementia, it would be necessary to integrate family resilience in the programs. 27% is not that much and I wonder if we have to do more work to identify the factors that influence care giving.

• Journal of the Korea Safety Management & Science
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• v.15 no.4
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• pp.435-448
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• 2013

The aim of this study is to investigate and develop the extended models for Economic Cash Amount(ECA), Cash Break Even-Point(BEP), and Cash Flow Statement(CFS) by referencing systematic literature review in the field. The study develops three extended models to determine the optimal cash amount: ECA model with interest opportunity cost, financing transaction cost and financing fail cost, ECA model with daily cash supply and interest opportunity cost, ECA model with financing fail cost and interest opportunity cost. Earnings Before Interests, Tax, Depreciation and Amortization(EBITDA) is obtained by subtracting noncash depreciation costs from Earning Before Interest and Tax(EBIT), which is efficient metric to evaluate operating cash flow. The research also develops two extended Cash BEP models, considered as interest and corporate tax, in order to indentify the break-even point as EBITDA equals zero. Furthermore, this paper proposes the modified version of CFS by introducing the reclassification of operating and financing accounts in the statement of financial position. In addition, the study also present the reclassification of five types of profit, such as gross profit, EBIT, ordinary profit, special profit, and net profit within the statement of comprehensive income. In order to provide a better understanding of the proposed cash flow models, numerical examples, such as two-sample t test and Analysis of Variance(ANOVA), are presented to demonstrate the statistical significance according to the industrial types for net working capital(i.e cash-to-cash), net profit, operating cash flow and free cash flow.

• Korean Journal of Occupational Health Nursing
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• v.20 no.1
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• pp.83-92
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• 2011

Purpose: This is a descriptive study that provides basic material to improve occupational health nurses' work conditions and industrial performance status. Methods: The 955 nurses who participated in the training program to understand the purpose of this study from January 2009 to December 2010 conducted by the Korean Association of Occupational Health Nurses agreed to be subjects for the study. The questionnaire included the general characteristics, work conditions and performance of occupational health management. The data were analyzed using descriptive statistics, t-test, ANOVA, and multiple regression analysis. Results: Occupational health management performance of the subjects averaged 3.11 points and detailed area by health management 3.64 points, environment management 2.91 points and occupational management 2.77 points. Health management performance of those factors affecting the duration of occupational health nurse (${\beta}$=.199), type of industry (${\beta}$=.126), average annual income (${\beta}$=-.277) to 11.4% (F=3.175, p<.001) were found to be a significant determinant. Conclusion: Occupational health nurses are the core workforce of occupational health through the prevention of occupational disease and industrial accidents. Findings of this study can be an important resource to increase appropriate occupational health nurses' work conditions and performance of occupational health management.