• Aerospace Engineering and Technology
• /
• v.3 no.2
• /
• pp.42-49
• /
• 2004

Analytical solutions are developed to predict temperature of a satellite box during launch stage under the assumption of worst hot condition. The considered time period is from fairing jettison to separation of satellite during launch stage. After fairing jettison, a box mounted on outer surface of satellite are exposed to space environments such as direct solar flux, Earth IR, Albedo, and free molecular heating. The thermal governing equation is simplified to 1st order ordinary differential equation such that analytic solutions are acquired after the box is assumed as a single lumped mass. The analytical solutions are also available for mass varying box. Finally, the practical application is performed for the case of STSAT-1 launch scenario.

• Women's Health Nursing
• /
• v.5 no.1
• /
• pp.36-50
• /
• 1999

The purpose of this study was determine the relationship between social support and the infertility stress of infertile women. The subjects for this were 64 infertile women living in S city, Kyung Book Province. The data was collected during $4^{th}$ July and $14^{th}$ August, 1988 using the social support scale developed by Park(1985) and the infertility stress scale developed by Kim et. al.(1995) The data analysis was done by descriptive statistics, t-test, ANOVA, Pearson correlation coefficient and stepwise multiple regression using SPSS PC program. The results were as follows. 1. The mean of social support of the infertile women was 3.80. 2. The negative correlation was revealed between social support and the infertility stress(r=-.56, p=.001). 3. Research has revealed that the support need of social support was a predictor of the infertility stress of the infertile women, explaining 30.9% of total variance. 4. the general characteristic variable significantly related to the level of the infertility stress of the infertile women was marriage satisfaction(t=-3.28, p=.004). The results of this study suggest that social support is related to the infertility stress of the infertile women. Therefore, The nurse is recommended to apply supportive intervention in caring for infertile women.

• Korean Journal of Adult Nursing
• /
• v.18 no.3
• /
• pp.446-456
• /
• 2006

Purpose: The purpose of this study is to provide basic data for nursing programs in order to reduce depression among middle aged adults by looking at gender differences. Method: A comparative descriptive design was used. Subjects were 315 adults from February. 15 to March. 2, 2005, using a structured questionnaire. The data was analyzed using $\chi^{2}$-test, Pearson correlation analysis and stepwise multiple regression. Results: $\chi^{2}$-test revealed significant gender differences in socio-demographic variables for career, drinking, smoking, and satisfaction with the spouse. The factors that influenced depression for men were stress, fatigue, job satisfaction and self-efficacy. For women, those factors were stress, family support, coping skills, and well-being. Conclusions: The results show that gender differences existed in terms of depressions, in terms of factors influencing depression. As a result, when middle aged adults are provided nursing programs, gender differences should be considered. To decrease the depression of men, nursing interventions are needed to decrease their stress and fatigue, and to improve their job satisfaction and self- efficacy. To decrease the depression of women, it is also needed to decrease their stress, to elevate their family support and coping skills, and to support them so that their well-being is perceived good.

• Korean Journal of Adult Nursing
• /
• v.16 no.2
• /
• pp.233-244
• /
• 2004

Purpose: The Purposes of this study were to examine the effects of Koryo-Sooji-Chim (30minutes * 2times/week * 2weeks) on menstrual pain and menstrual symptoms of female university students with dysmenorrhea. Method: The subjects were 22 female students with dysmenorrhea, 12 experimental group, 10 control group, studying at K university in Chungnam province. The data were collected through questionnaires from September 1st to November 30th 2003 were analyzed using descriptive statistics, ${\chi}^2$-test, Fisher's exact test and Mann-Whitney test. Result: 1. The menstrual pain scores were significantly different between the two groups(U=16.0, p=.001). 2. The menstrual symptom scores were significantly different between the two groups(U=28.5, p=.038). Conclusion: These findings showed that Koryo-Sooji-Chim was effective related to menstrual pain and menstrual symptoms of female university students with dysmenorrhea. Koryo-Sooji-Chim during dysmenorrhea could be applied as an effective nursing intervention.

• Aerospace Engineering and Technology
• /
• v.12 no.2
• /
• pp.24-29
• /
• 2013

A spacecraft radiator is a thermal control method to eject internally dissipated heat into the space generated from operation of unit boxes. The efficiency of thermal design may be improved by optimizing radiator design. In this paper, the optimization approach method of node-based radiator design was suggested which is to combine numerical thermal analysis with optimization algorithm. This method has meaning that it can be used practically to implement the spacecraft radiator design regardless of thermal analysis and optimization algorithm software and maintain the same basic concept of an ordinary radiator design approach based on node division of a thermal model. The overall analysis framework with thermal analysis and optimization algorithm would be presented.

• The Journal of Korean Academic Society of Nursing Education
• /
• v.18 no.1
• /
• pp.149-158
• /
• 2012

Purpose: The purpose of this study was to identify the factors influencing mental health among late elementary age children. Methods: The research design was a secondary data analysis. Data were collected from 746 students in grades 5 or 6, and analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients and stepwise multiple regression with the SPSS/PC 18.0 program. Results: The average score of mental health was $3.42{\pm}0.55$. There were significant differences in mental health according to health status, economic status, scholastic performance, relationships with friends, relationships with the teachers, atmosphere of the home, number of siblings and the source of trouble. Stepwise multiple regression analysis showed influencing factors of stress, negative reaction under stress, self-esteem, teacher support, and friend support support and explained 41.4% of total variance in late elementary age children's mental health. Conclusion: These results may contribute to a better understanding of mental health in late elementary age children. The results of the present study indicate a need to develop nursing interventions to prevent and manage elementary school-age children's negative reaction under stress.

• Women's Health Nursing
• /
• v.12 no.4
• /
• pp.273-281
• /
• 2006

Purpose: The purpose of this study was to provide basic data for nursing programs to reduce fatigue among middle-aged adults by looking at age group differences. Method: The study used a secondary analysis design and participants were 315 middle-aged adults. The data was analyzed using $x^2$-test, ANOVA, Pearson's correlation coefficient analysis, and stepwise multiple regression. Results: The findings revealed significant age group differences in socio-demographic variables for educational level, job, religion, economic status, consumption of cigarettes, experience with disease, satisfaction with spouse and children, and number of children. Scores of fatigue showed a significant difference between age groups. The factors influencing fatigue for subjects in their thirties were depression, level of education and self-efficacy. For those in their forties, factors were stress, depression, and self-efficacy. For those in their fifties, the factor was stress. Conclusion: For people in their thirties, school education or lifelong learning programs are needed to reduce fatigue. A disease prevention program and a family support program for people in their forties and fifties. Nurses need to provide customized nursing programs related to depression, stress and self-efficacy to reduce fatigue among middle-aged adults based on age groups.

• Korean Journal of Adult Nursing
• /
• v.19 no.5
• /
• pp.12-26
• /
• 2007

The purpose of this study was to examine what types of customized nursing intervention for the elderly were most effective by looking at age group difference and other factors related to ego integrity. Methods: A secondary analysis was used with 104 elderly people. The data were analyzed using $\chi^2$-test, Fisher's exact test, ANCOVA, Pearson's correlation analysis and multiple regression. Results: For those 80 and older, powerlessness was higher than for those in their 60s and 70s. The factors influencing ego integrity for those in their 60s were powerlessness, economic condition, source of discretionary money, and health condition; for those in their 70s - life satisfaction, self-esteem, and health condition; and for those 80 and older - life satisfaction and source of discretionary money. Conclusion: In nursing for the elderly, age differences should be taken into consideration. The study suggests that for people in their 60s, the creation of jobs that allow them to earn money is important. For people in their 70s over, offering of health care and self-esteem programs through community health centers are equally important. For people in their 80s over, nursing programs for advocacy, support, and psychological care are needed in order to elevate their life satisfaction.

• Journal of Korean Academy of Nursing
• /
• v.29 no.4
• /
• pp.829-840
• /
• 1999

This study was conducted to construct a hypothetical model of depression in Korean adolescent women and validate the fit of the model to the empirical data. The data were collected from 345 high school girls in Seoul, from May 1 to June 30, 1998. The instruments were the Body Mass Index, Physical Satisfaction Scale, Family Adaptatibility and Cohesion Evaluation Scale III, Family Satisfaction Scale, CES-D and School Adptation Scale. The data were analyzed using descriptive statistics with the pc -SAS program. The Linear Structural Relationship(LISREL) modeling process was used to find the best fit model which would predict the causal relationships among the variables. The overall fit of the hypothetical model to the data was moderate ［X$^2$＝69.6(df＝17, p＝.000), GFI ＝0.95, AGFI＝0.90, RMR＝0.087, NNFI＝0.86, NFI＝0.90］. The predictable variables, especially menstrual symptoms, physical symptoms and family function, had a significant direct effect on depression. but school life adaptation did not have a significant direct effect. These variables explained 18.1% of the total variance.

• Journal of Korean Academy of Nursing
• /
• v.41 no.5
• /
• pp.642-651
• /
• 2011

Purpose: The purpose of this study was to explore the resilience of adult children of alcoholics (ACOA) who are college students, and examine factors contributing to their resilience. Methods: A total of 459 college students from a university in Incheon, participated in this study. Data were collected between April 6 to 30, 2010 using the Korean version of the Children of Alcoholics Screening Test (CAST-K), CAGE, Social Support, Self-Esteem, Family Adaptability and Cohesion, and Resilience measurements. Data were analyzed using the SPSS/WIN 18.0 program. Results: Overall, ACOA group showed lower scores of resilience, social support, self-esteem and family adaptability and cohesion compared to non-ACOA group. Resilience among the ACOA group showed significant relationships with self-esteem (r=.53, p<.001), social support (r=.43, p<.001), and family adaptability and cohesion (r=.25, p<.013). Multiple regression analysis showed that 45% of the variance for resilience in the ACOA group was accounted for by age, gender, social support, self-esteem, and religion. Conclusion: The results of the study show that self-esteem and social support are important determinants of resilience in ACOA, thus it is recommend that further resilience training programs for ACOA be developed to enhance their social support and self-esteem, and ultimately to increase their resilience.