• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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• pp.255-259
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• 2012

BIPV/T (Building Intergrated PhotoVoltaic/Thermal) is combined system produces electricity and thermal energy. The heat from PV modules should be removed for better electrical performance, and can be converted into useful thermal energy. The test system is installed to top floor of the experimental house in the KEPCO Research Institute. The experimental performance is executed from 13th February to 13th March, 2012. The expected system's thermal performance is 1.9kWh under the horizontal solar radiation is $600W/m^2$ and the air flow in the system is $20CMH/m^2$.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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• pp.445-450
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• 2012

BIPV/T (Building Intergrated PhotoVoltaic/Thermal) is combined system produces electricity and thermal energy. The heat from PV modules should be removed for better electrical performance, and can be converted into useful thermal energy. The efficiency of the PV system's performance will raise by the system removes heat from the PV. The test system is installed to top floor of the experimental house in the KEPCO Research Institute. The planned experiment is following. (1) Supplying heat energy to top floor. (2) Supplying heat and cool energy to thermal storage in the bottom of the top floor. (3) Supplying heat energy to EHP for improved performance. The experimental performance is executed from 13th February to 13th March, 2012. The solar generation of electricity is 4.04kWh under the horizontal solar radiation is $1000W/m^2$ and the air temperature is $25^{\circ}C$.

• Journal of Aerospace System Engineering
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• 제2권3호
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• pp.40-44
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• 2008

T-50 ECS(environment control system) was designed to have freezing protection for the condenser. However during the ground and flight test, the freezing problem was occurred. This paper deals with the analysis of the freezing problem and introduces anti-freezing design using ADI(Active De-Icing) logic to solve the condenser freezing problem of T-50 ECS

• Journal of Convergence for Information Technology
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• 제7권2호
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• pp.111-117
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• 2017

Background/Objectives: The purpose of this study is to investigate the effects of eating habits and self-efficacy on health promotion behavior and to improve the quality of life in each life cycle. Methods/Statistical analysis: This study is a narrative research study for nursing students at university B in C city. The data were analyzed by SPSSWIN 18.0, t-test, ANOVA and bonferroni post test, Pearson correlation coefficient calculation and multiple regression analysis. Findings: Health promotion behaviors were positively correlated with eating habits and self-efficacy. Multiple regression analysis showed that 53.8% of the parents, caregivers, health status, eating habits, and self - efficacy of the nursing students showed the health promotion behaviors of the nursing students. The higher the self-efficacy(t=6.06, p<.001), the better the health-promoting behaviors(t=3.28, p=.001). Application/mprovements: Development of programs for strengthening health education and self-efficacy is required for proper eating habits and health promotion.

• Journal of Korean Academy of Nursing
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• 제23권1호
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• pp.107-117
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• 1993

This study was a clinical Quasi-experiment to examine the effects of the range of motion exercise on powerlessness and life satisfaction among the E-Institutionalized elderly in Pusan. The purpose was to test the effect of the range of motion exercises on powerlessness and life satis-faction, and to examine the correlation between powerlessness and life satisfaction. The subjects for this study were 54 elderly people, both were over 60 and residing at I-Institution in Pusan. The research samples of 54 elderly were divided into an experimental and control group by matching randomized assignment. The instruments for this study were the Assessment Tool of Powerlessness in the elderly developed by Miller, Life satisfaction developed by Yoon Jin, and the Active-Passive Range of Motion Exercise Program which was developed and utilized by Shin, Jae-Shin. The data were collected from December 15, 1990 to November 1991. The paired t-test, t-test and ANCOVA were used to test hypothesis I and II, related to the Effect of the Range of Motion Exercises to powerlessness and life satisfaction. To identify the relationship of the range of motion exercises to powerlessness and life satisfaction, path analysis was done through multiple regression. The interrelationship of the variables was analyzed using t-test paired t-test. The results of the three hypothesis can be summarized as follows : 1. Hypothesis I -the experimental group which participated in the Range of Motion Exercise gets lower powerlessness score than that of the control group-was accepted by t-test (t = -3.40, p = .001) but not accepted by ANCOVA (F = .1, p =.96). 2. Hypothesis II - the experimental group which participated in the Range of Motion Exercise gets a higher Life Satisfaction Score than that of the control group-was not supported by t-test(t = 1.01, p = .316) but was accepted by ANCOVA (F = 4.39, p = .006). 3. Hypothesis III - if the powerlessness Score becomes higher, the Life Satisfaction Score will be-come lower - was accepted by Pearson Correlation Coefficient (pre-exercise : r : -.34, p=.006), (post exercise : r = -.06, p=.32) . The relation-ship between the score of powerlessness and life satisfaction was negatively correlated. The results obtained clearly showed that the effects of the range of motion exercises on powerlessness and life satisfaction are beneficial to the elderly The relation between the scores of powerlessness and life satisfaction was negatively correlated and the range of motion exercise had a direct influence to powerlessness. Therefore, it is concluded that the relationship between powerlessness and life satis-faction was not a causal one. Also it is concluded that the range of motion exercises can be applied as a nursing intervention to reduce powerlessness and to improve life satisfaction in the elderly.

• Journal of Acupuncture Research
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• 제28권2호
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• pp.155-164
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• 2011

Objectives : The purpose of this study was to show the corelation between age-related muscular mass and the change of exercise, muscle mass and muscular strength by comparison of muscle strength. Methods : 39 volunteers of all the patients who come to Dangjin health center between May and June in 2009 were classified as group A and group B according to age. Demographic data of these two groups have been done a comparative analysis, using the t-test procedure and linear regression analysis. Results : The results and summarized as follows. 1. Demographic data of these two groups have been done a comparative analysis, using the t-test procedure. As a result the average exercise and the average pulse have a statistically significant difference according to age. 2. Each of average fat, muscle and muscular strength in these two groups have been done a omparative analysis, using the t-test procedure. As a result there is no statistically significant according to age. 3. According to the result analyzed by using linear regression analysis, age have a negative effect on muscle but there is no statistically meaningful. Exercising have a positive effect on muscle and there is statistically significant. 4. Age and Protein diet have a negative effect on Grip strength but there is no statistically significant Conclusions : From this result, it can be assumed that the amount of exercise is decreasing with age, which leads to lose some muscle mass.

• Journal of Digital Convergence
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• 제19권12호
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• pp.567-575
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• 2021

This study was aimed to identify surgical ward nurses' importance-performance awareness toward early mobilization after abdominal surgery patients. The date were collected from 162 nurses and the importance and performance of early mobilization were analyzed by the IPA method. The collected data were analyzed using the SPSS/WIN 25.0 by implementing descriptive statistics, independent t-test, paired t-test, and ANOVA. Early mobilization was divided into exercise of pulmonary complications and early ambulation. As a result of the study, the areas requiring concentration were 'check risk of aspiration', and areas requiring improvement were 'oral care', 'check lung sound', 'percussion/vibration', 'suction', and 'reinforcement exercise in bed'. Therefore, each item of early mobilization is recommended to reduce the gap between importance and performance in clinical care.

• Journal of radiological science and technology
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• 제42권1호
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• pp.39-46
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• 2019

This study conducted a comparative analysis of differences between cartesian trajectory in a linear rectangular coordinate system and MultiVane trajectory in a nonlinear rectangular coordinate system axial T1 and axial T2 images using an American College of Radiology(ACR) phantom. The phantom was placed at the center of the head coil and the top-to-bottom and left-to-right levels were adjusted by using a level. The experiment was performed according to the Phantom Test Guidance provided by the ACR, and sagittal localizer images were obtained. As shown in Figure 2, slices # 1 and # 11 were scanned after placing them at the center of a $45^{\circ}$ wedge shape, and a total of 11 slices were obtained. According to the evaluation results, the image intensity uniformity(IIU) was 93.34% for the cartesian trajectory, and 93.19% for the MultiVane trajectory, both of which fall under the normal range in the axial T1 image. The IIU for the cartesian trajectory was 0.15% higher than that for the MultiVane trajectory. In axial T2, the IIU was 96.44% for the cartesian trajectory, and 95.97% for the MultiVane trajectory, which fall under the normal range. The IIU for the cartesian trajectory was by 0.47% higher than that for the MultiVane trajectory. As a result, the cartesian technique was superior to the MultiVane technique in terms of the high-contrast spatial resolution, image intensity uniformity, and low-contrast object detectability.

• Journal of the Korean Applied Science and Technology
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• 제38권2호
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• pp.521-531
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• 2021

This study was conducted to examine the relationships between nursing students' knowledge on dementia, care performance, and empathy, thus providing the foundation of dementia patient nursing intervention strategies for nursing students. For the analysis to examine the relationships, this study used descriptive statistics, t-test, ANOVA, Scheffé test, and Pearson's correlation coefficient. The analysis showed that the higher students' year of study and the higher their interest in dementia (F=5.02, p=.008), the higher their knowledge on dementia (t=-4.03, p<.001), and also that the higher their satisfaction with clinical training (F=3.91, p=.023), the higher their care performance. It was found that nursing students' knowledge on dementia and their care performance (r=.21, p=.023) were positively correlated at a statistically significant level. Based on the results, this study suggests the need to develop and utilize education programs that can help students gain knowledge on dementia prior to clinical training so that they can have more knowledge on dementia and be encouraged to practice caring for patients with dementia.

• Journal of Digital Convergence
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• 제19권3호
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• pp.425-436
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• 2021

The purpose of this study was to investigate the related variables of the resilience of Korean young adults. The sample was 464 young adults aged 19-34 years who had never been married, both parents alive and living with one or more of their parents in the Seoul metropolitan region. The collected data were analyzed by descriptive statistics, factor analysis, t-test, paired t-test, one-way ANOVA, and multiple regression analysis using SPSS ver.23 and AMOS 23.0. The resilience of young adults was significantly related to the variables of gender, maternal helicopter parenting, bonding social capital, and bridging social capital. As a result, this study showed that the resilience of young adults was formed and promoted by the combined effects of the family-related environment and social-related environment. The results of this study provide meaningful data that should be considered in the counseling and education field when developing programs to build the resilience of young adults. Policy implications for improving the resilience of Korean young adults are discussed.