• Journal of the Korean Society for Precision Engineering
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• v.28 no.2
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• pp.185-192
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• 2011

This study deals with a basic proposal to prove the safety for the exhausted fittings of the hydrogen fuel cell vehicle. First, this study was approached to numerical analysis solving to close the exact boundary condition (Axial, Bending, Lateral) and the second, this study produced the Lateral movement equipment for the vibration. For the numerical analysis, This study was considered with the exact solution of Lateral movement and the resonance effect for durability sample according to fitting positions. The second, This study was made for special equipment for displacement/gas leak and the frequency because the domestic samples were comparing with foreign fitting and foreign fitting for the hydrogen fuel cell vehicle. The result of this study was satisfied with domestic fittings for the basic reference but it need more test because of other situation for hydrogen fuel cell vehicle.

• The Journal of the Convergence on Culture Technology
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• v.4 no.2
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• pp.171-178
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• 2018

The study was done to analyze the effects of aroma inhalation method on preoperative anxiety of upper and lower surgical patients. The research design was a nonequivalent control group non-synchronized design. The subjects were a total 60 patients of each group 30 patients that were operated on under general anesthesia for upper and lower limbs surgery. The tool of the Amsterdam preoperative anxiety information scale(APAIS), systolic and diastolic blood pressure, and pulse rate levels was measured the day before surgery. The data were analyzed by the $x^2$ test Fisher's exact test, paird t-test, and the independent t-test using SPSS 20.0. Study result indicated that Lavender aroma therapy had the effect on reduction of anxiety before surgery and reduction of blood pressure, and pulse rate levels. Therefore, the study result could be used as a scientifical data that can be applied to the nursing interventions that use the aroma inhalation method and contributing to development of the holistic nursing care.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.4
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• pp.2639-2646
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• 2015

This study was to identify the effects of supportive nursing intervention using video-program of operating room nurses before operation on laparoscopic hysterectomy patient's anxiety. This study was nonequivalent control group pre-post test design. The data were collected from May 1 to Jun 20, 2013 and analyzed by $x^2-test$, Fisher's exact test and t-test using SPSS 20.0 program. Experimental group(who received supportive nursing intervention) and control group(who received booklet education) was respectively consisted of 25 patients who were laparoscopy hysterectomy. The anxiety(p=.002) of experimental group was significantly lower than control group. The systolic(p=.012) and diastolic(p=.045) pressure of experimental group was significantly lower than control group, but pulse wasn't. The supportive nursing intervention for preoperative patient is considered effective and useful in reducing anxiety. Further research is warranted to investigate the supportive nursing intervention long-term effect.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.291-299
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• 2019

This study is a nonequivalent control group pretest-posttest designed to understand the effect of ethical dilemma discussion program on human rights sensitivity and ethical values of university students. By providing ethical dilemma discussion program to university students in C university, G-do, the effectiveness was verified. Analyzed using IBM SPSS 24.0. The normality of the variables was verified by Shapiro-Wilk test. Homogeneity was verified using real number and percentage, Fisher's exact probability test and independent t-test. The program's effect was verified using paired t-test. The results of this study are as follows: after the ethical dilemma discussion program, the experimental group's human rights sensitivity(t=-2.32, p=.025), and ethical value(t=-2.43, p=.020) were higher than the control group. Therefore, the ethical dilemma discussion program of this study helped improve the human rights susceptibility and ethical values of the subjects. Further research is needed to verify the effects of ethics education on diverse groups.

• Communications for Statistical Applications and Methods
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• v.4 no.1
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• pp.139-149
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• 1997

For split plot designs exact univariate F tests of the within-subjects main effect are based on the assumption of multisample sphericity. Type I error rates and power are reported for the F test and two tests designed for use when multisample sphericity is violated: the $\widetilde{\xi}$-adjusted test and the Corrected Improved General Approximation(CIGA) test.The results indicate that even though the F test and the $\widetilde{\xi}$-adjusted test have better power than the CIGA test in some conditions, the F test and the $\widetilde{\xi}$-adjusted test do not control Type I error rates when the design is unbalanced and the F test dose not have a good control of Type I error rates when sphericity assumption is severely violated.

• Communications for Statistical Applications and Methods
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• v.6 no.1
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• pp.11-24
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• 1999

In this paper we propose a method to test $\textit{H}$:$\rho_i$=$\gamma_i$ for 1$\leq$$\textit{i}$$\leq$$\ell$ against $\textit{K}$:$\rho_i$$\neq$$\gamma_i$ for some ｉin k-variance component random or mixed linear model where $\rho$i denotes the ratio of the i-th variance component to the error variance and $\ell$$\leq$K. The test which we call Rao-Wald test is exact and does not depend upon nuisance parameters. From a numerical study of the power performance of the test of the interaction effect for the case of a two-way random model Rao-Wald test was seen to be quite comparable to the locally best invariant (LBI) test when the nuisance parameters of the LBI test are assumed known. When the nuisance parameters of the LBI test are replaced by maximum likelihood estimators Rao-Wald test outperformed the LBI test.

• Journal of the Korea Convergence Society
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• v.8 no.1
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• pp.97-106
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• 2017

The purpose of this convergence study was to identify the effects of favorite music therapy on anxiety, fatigue, and vital signs of patients undergoing prostatectomy with spinal anesthesia. This study used a nonequivalent control group design. A sample of 45 patients was included. The experimental group was given music therapy during operation. The data were collected using a structured questionnaire and monitoring at 30 min before operation, at 20 min and 40min undergoing operation, and at arrival recovery room after operation. Data were analyzed using descriptive statistics, ${\chi}^2-test$, Fisher's exact test, t-test, repeated measures ANOVA. The experimental group reported significantly lower anxiety and lower fatigue than the control group(p=.001; p=.020). However there were no significant differences in the systolic blood pressure, diastolic blood pressure and pulse rate between groups(p=.821; p=.473; p=.782). This findings indicate that the tailored favorite music therapy can be an effective nursing intervention for patient undergoing prostatectomy with spinal anesthesia to reduce anxiety and fatigue related to operation.

• The Journal of the Korea Contents Association
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• v.15 no.12
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• pp.294-303
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• 2015

The purpose of this study was to examine the effects end-of-life care education using self-reflection diary on spirituality, death orientation, and attitudes toward nursing care of the dying patients in nursing students. This study adopted nonequivalent control group pretest-posttest design and the subjects consisted of 69 in the experimental group and 68 in the control group. The education was performed for 100 minutes a session, once a week for 12 weeks. Data was collected using a structured questionnaire consisting of general characteristics, spirituality, death orientation, and attitudes toward nursing care of the dying patients. Collected data was analyzed for frequency, percentage, ${\chi}^2$ test, Fisher's exact test and t-test using SPSS/WIN 21.0 computed program. There were statistically significant differences in spirituality and attitudes toward nursing care of the dying patients between the experimental group and the control group. Regarding death orientation, our result showed no significant differences between two groups. These findings suggest that end-of-life care education using self-reflection diary was effective in enhancing the spirituality and attitudes toward nursing care of the dying patients in nursing students.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.511-522
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• 2018

The purpose of this study was to measure the effect of REBT based cinema therapy program on depression, self-esteem, emotional expression and interpersonal relationship of depressed middle-aged women. The subjects of study were 44 middle-aged women with depression who were registered in the mental health center of G city (experimental group 23, control group 21). Data were analyzed using ${\chi}^2$-test, Fisher's exact test, t-test. The results of study suggested that the REBT-based cinema therapy was effective nursing intervention to reduce depression and improve self-esteem, emotional expression and interpersonal relationship skill in middle-aged women with depression. Therefore, REBT-based cinema therapy program could be used as a community psychosocial rehabilitation nursing intervention program.

• Journal of the Korea Convergence Society
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• v.9 no.2
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• pp.371-380
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• 2018

The purpose of this study was to investigate the effects of patient controlled analgesia(PCA) convergence education on postoperative pain management in spinal surgery patients. Sixty spinal surgery patients were included. For the experimental group(n=30), PCA education using video, booklet, and a PCA model practice was provided before surgery. The data were collected using questionnaire and were analyzed using descriptive statistics, ${\chi}^2-test$, Fisher's exact test, t-test and repeated measures ANOVA. PCA knowledge-attitude, PCA satisfaction and pain control satisfaction were higher in the experimental group than the control group(p<.001; p=.001; p<.001). Postoperative pain and frequency of additional analgesia use of the experimental group were significantly lower than those of the control group(p<.001; p=.001). This findings showed that the convergence PCA education of audiovisual aids with PCA practice training could be effective pain management intervention in patients undergoing spinal surgery. These apply to development of convergence nursing interventions in clinical practice.