• Journal of the Korean Society of School Health
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• v.29 no.3
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• pp.235-244
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• 2016

Purpose: The purpose of this study was to investigate factors effecting the psychological well-being of adolescents who attend a community child center. Methods: The survey was conducted on 143 children attending a community child center in P city with a structured self-report questionnaire from August 20 to September 20, 2016. Data were analyzed through descriptive statistics, t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficient, and stepwise multiple regression, using SPSS/WIN version 18.0. Results: There were significant differences in psychological well-being according to grade, one of the general characteristics of the subjects. There was a significant positive correlation between ego-resilience, social support, subjective well-being, and psychological well-being. From the multiple regression analysis, the most significant factors affecting psychological well-being were subjective well-being (${\beta}=.56$) and grade division (${\beta}=.19$). These variables explained 38.0% of the total variance in psychological well-being. Conclusion: Considering the results of this study, it is desirable to develop measures to increase adolescents' subjective well-being and provide support according to grade in order to improve the psychological well-being of the adolescents attending community children centers.

• Journal of the Korean Society of Costume
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• v.56 no.3 s.102
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• pp.143-155
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• 2006

This study aims to examine the difference of body image and psychological well-being of men and women according to appearance management. The subjects of the study were 673 college students who lived in Seoul and metropolitan areas. Statistical analyses used in the study were factor analysis, Cronbach's a, cluster analysis, ANOVA, Duncan test and $\chi^2-test$. The results of this study were as follows; 1. The body image was categorized into the three factors of personal interest innce, anxiety about weight and physical attraction. Appearance management was categorized into the appearance management through clothing, strict diet therapy and daily appearance management. The psychological well-being was classified as seven factors which include the life goal, self-acceptance, positive personal relations, self-regulation, personal development, environment control and responsibility. 2. The appearance management was classified by 4 groups as below: Daily appearance management group, strict diet therapy group, appearance management through clothing group and no interest in appearance group. 3. There were significant differences among the four groups regarding body image, psychological well-being and life satisfaction. First, appearance management through clothing group had more interest in appearance than other groups. In the case of weight awareness, strict diet therapy group and the appearance management through clothing group intended to have more concerns over their weight. The strict diet therapy group seemed to have an overall lower level of psychological well-being than other groups. Lastly, the appearance management through clothing group had a higher level of life satisfaction.

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.391-396
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• 2005

Salt water spray test and salt water immersion test were experimentally conducted in order to investigate the durability of fiber reinforced composites under salt water environment. The specimens were made of glass fabric reinforcement and phenolic resin. Mechanical test was performed to obtain mechanical properties such as tensile properties, flexural properties, and shear properties by varying with exposure times. Also dynamic mechanical test and FTIR were conducted to investigate a change in chemical structure as well as thermal analysis properties such as storage shear modulus, loss shear moduls, and tan ${\delta}$. According to the results, salt water environment has effected on mechanical properties and thermal analysis properties and especially the durability of glass fabric/phenolic composites were severely affected on salt water immersion environment rather than salt water spray environment.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.24 no.7 s.178
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• pp.1753-1762
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• 2000

An inverse method is presented to obtain material's flow properties by using small punch test. This procedure employs, as the objective function of inverse analysis, the balance of measured load-di splacement response and calculated one during deformation. In order to guarantee convergence to global minimum, simulated annealing method was adopted to optimize the current objective function. In addition, artificial neural network was used to predict the load-displacement response under given material parameters which is the most time consuming and limits applications of global optimization methods to these kinds of problems. By implementing the simulated annealing for optimization along with calculating load-displacement curve by neural network, material parameters were identified irrespective of initial values within very short time for simulated test data. We also tested the present method for error-containing experimental data and showed that the flow properties of material were well predicted.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2003.11a
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• pp.836-839
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• 2003

In this paper, we briefly introduce the test bench and test method of RWA micro-vibration. TAMAM RWA (Reaction Wheel Assembly) micro-vibration was measured on a KISTLER dynamic plate which can measure time signals of three orthogonal forces and torques simultaneously up to 400Hz, and test data was analyzed. Measured data were evaluated with respect to the wheel spin rate and the static/dynamic unbalances were estimated from the extracted first harmonic component. The estimated static and dynamic unbalances were 0.79gㆍcm and 17.4gㆍ$\textrm{cm}^2$ respectively. The resonance mode and two rocking modes were observed as a results of its frequency analysis. Several higher order harmonic components were observed, which comes from its rotor shape as well as the wheel bearing.

• Journal of the Korean Society of Safety
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• v.19 no.3 s.67
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• pp.78-83
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• 2004

The channel-type lining board that partial welded on many partition frames is used to normal servicing lining board type. On this study is to investigate existing channel-type lining board's capacity by using the static loading test. From this study, to develop new-type lining board which reflect well cross section area and sectional modulus of existing channel-type lining board. Six types FEM model are adopted. The accumulated test results of stress conditions and deflections by section shapes will be used to analyzed the relation between the capacity and the section shape. With the comparing the results of static loading test and FEM analysis.

• International Journal of Aeronautical and Space Sciences
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• v.17 no.2
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• pp.167-174
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• 2016

Even though the differential drag type machines of the vertical wind turbines are a bit less efficient than the lift type machines such as Darrieus type machines, they have an advantage of low starting torque. The flapping blade type wind turbine is a specific type of the differential drag machines, and it has no need for orientation as well as quite low starting torque. This work is to develop an innovative 5kW class flapping type vertical wind turbine system which will be applicable to a hybrid power generation system driven by the diesel engine and the wind turbine. The parametric study was carried out to decide an optimum aerodynamic configuration of the wind turbine blade. In order to evaluate the designed blade, the subscale wind tunnel test and the performance test were carried out, and their test results were compared with the analysis results.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.50 no.8
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• pp.351-358
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• 2001

This paper deals with the PSS modeling of Ulchin N/P #1 as well as the generator and excitation system modeling by utilizing the recorded data from AVR step test, which has been performed by entering small voltage signal into the AVR summing point. In addition to it. two recorded results obtained from the AVR step test with PSS sunning and without PSS running have not only been compared each other on the time domain, but also they heve been analyzed with FFT analysis on the frequency domain; thus, the desirable effects of running PSS in Ulchin N/P #1 on power system have been explicitly confirmed. Finally, the derived PSS model parameters lead to good matches between simulation results and recorded data.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.24 no.4
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• pp.286-295
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• 2017

Purpose: The World Health Organization identifies spiritual care as a component of health and thus nursing care. There is a need to identify how self-esteem, communication and existential well-being affects spiritual care competence in nurses. Methods: The participants were 189 nurses in G metropolitan city. The survey was conducted from March 21 to April 8, 2016, with a self-report questionnaire. Data were analyzed using descriptive statistics, independent t-test, one-way ANOVA, $Scheff{\acute{e}}$ test, Pearson correlation coefficient and stepwise multiple regression analysis using SPSS version 21.0. Results: Differences in spiritual care competence were statistically significant according to education level, work department, position, having received spiritual care education, experience of providing spiritual care, experience of asking religionist to provide spiritual care for a patient and recognition of need for spiritual care. The spiritual care competence of nurses showed a significantly positive correlation with self-esteem, communication and existential well-being. Factors influencing spiritual care competence were communication, experience of providing spiritual care and existential well-being which explained about 37.5% of spiritual care competence. Conclusion: It's necessary for nurses to develop intervention programs to strengthen spiritual care competence through improving communication, providing opportunities for spiritual care and existential well-being.

• The Korean Journal of Community Living Science
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• v.25 no.3
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• pp.349-361
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• 2014

This study was examined the general trends in social activity participation, the flow degree, and the psychological well-being of middle-aged women in Korea and explored how psychological well-being varies according to various sociodemographic variables, social activity participation, and the flow degree. This study provided practical insights into how the psychological well-being of middle-aged women can be enhanced. Data were gathered from 302 middle-aged women between the ages of 40 and 60 by using a structural questionnaire. The statistical methods included a descriptive analysis, a t-test, and a regression analysis using SPSS WIN 18.0. According to the results of the hierarchical regression analysis, the key variables influencing the psychological well-being of middle-aged women included the flow degree in terms of social activity participation and the education level. These variables explained 30% of the psychological well-being of middle-aged women. The higher the education level and the flow degree, the stronger the psychological well-being was. Social activity participation and the flow degree had greater effects on psychological well-being than sociodemographic characteristics. In particular, an increase in the flow of social activities increased psychological well-being. This suggests a need to improve the psychological well-being of middle-aged women by providing them with an environment where they can play social roles. One way to accomplish this is by linking retraining and life-long education-related activities to employment or volunteer activities. This study demonstrates the importance of the flow degree for the psychological well-being of middle-aged women. The results have important policy and theoretical implications.