• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.10
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• pp.4612-4618
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• 2012

The purpose of this study was to analyze the reliability and validity of CDT as a screening tool for cognitive impairment for stroke clients living in local community. Two evaluator assessed 51 clients' cognitive function using CDT and K-MMSE from October 2010 to August 2011 year. The researcher analyzed test-retest reliability, interrater reliability, construct validity, construct validity. The test-retest and interrater reliability was higher than .54(p<.01). The construct validity and concurrent validity was statistically significant(p<.01). So, The CDT using productive method and scoring system of Freedman et al., may be applied to screen cognitive impairment of clients with stroke.

• Journal of The Korean Association of Information Education
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• v.24 no.4
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• pp.327-335
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• 2020

This study intends to examine the effects of education using robot on computational thinking and attitudes according to left and right brain preference. To execute the study, 17 elementary students at A youth training center in Seoul were selected to participate in the education. And the mean difference was analyzed using matched pair t-test and Mann-Whitey U test. As a result, after participating in the education, there was some statistical significance found in the scores to test student's computational thinking, but not statistical significance on the attitudes. Furthermore, there was no significance found in computational thinking or attitude according to the left and right brain preference. The purpose of this study can be found in that it expands the understanding of education using robot by verifying the efficacy and analyzing differences according to left and right brain preference.

• Journal of the Korean Data and Information Science Society
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• v.27 no.2
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• pp.337-351
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• 2016

There exist many real situations that statistical decision problems are classified into more than two categories. In these cases, the concordance statistics by the pair approach are mostly used. However, the expression of the classification of categories are ambiguous. Recently, the standardized evaluation data and re-expressed concordance statistics are defined and could be explained their meanings. They have still some non-specific problems for standard criteria of the statistics. Since these can be considered between result and truth categories additionally, two alternative concordance statistics might be proposed in this paper. Some advantages are founded that the proposed statistics could be discriminated all possible cases for two randomly selected categories. Moreover since the proposed statistics are represented with indicator functions, these could be transformed non-parametrically, so that these concordances are used for hypothesis testing.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.154-165
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• 2016

The purpose of this study is to see the effect of the art therapy in group on the work stresses and emotional burnouts of social workers for diabled facility. The subjects are the 8 members of social workers at the facility for disabled located in city A. From Feb 16, 2016 to May 31, 2016, 70 minutes per session, overall 13 therapies were given. To see the therapeutic effects, there were test of stress and burnout before, afterwards and 4 weeks later. To find out the similarities in group, Mann Whitney U test was done, and Wilcoxon's signed ranks test was done to see the difference afterwards. As a result, art therapy in group was effective on the work stress and burnout of social workers in daisabled facility and the positive effect lasted. This results suggests a developed ways to reduce work stress and emotional burnout of social workers for disabled facility.

• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.268-284
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• 2010

The purpose of this study was to evaluate the effects of horseback riding simulation training(HRST) on gross motor function of children with cerebral palsy. Twenty-four children with cerebral palsy participated were divided into two groups randomly. Control group and experimental group both received 30 minutes of regular neuro-rehab exercises for three times a week per twelve weeks, but experimental group received additional 15 minutes of the HRST. Gross Motor Function Measure(GMFM) was used to evaluate the changes before and after HRST. Normalized GMFM scores were compared using Mann-Whitney U test, statistical significance was set at a=.05. The results were as followings: First, in each compared before and after the experiment, the control group showed significantly increased GMFM score in dimensions A and B. The experimental group showed significant increasing in all dimensions of GMFM test. Second, the experimental group showed significant differences comparing to control group in dimensions C, D and E of GMFM test. Consequently, HRST should be considered as a therapeutic method for physical therapy for the children with cerebral palsy to improve the functional movements.

• The Journal of the Korea Contents Association
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• v.12 no.7
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• pp.497-509
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• 2012

The purposed of this study was to evaluate the effects of psycho-social maturity personality improvement program for university students. This program based on the book written by Lee et al.(2010) to improve the personality for university student was used. The program consisted of a total of 13 session and every session consisted of a 50 minutes lecture and 100minutes activity program. The researcher carried out the pre-test, post test and follow up test regarding psycho-social maturity and conducted Mann-Whitney U test and the ancova. The results showed who had participated in counseling groups reported significant improvement of psycho-social maturity total scores and sub scores, while the control group did not report any significant improvements. After 10 weeks follow-up point, these changes experienced by the experiment group on the improvement of the psycho-social maturity. Finally the personality program helped improve the psycho-social maturity.

• The Journal of the Korea Contents Association
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• v.12 no.6
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• pp.361-370
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• 2012

The Purpose of this study was to find out the effects of frequency and intensity of transcutaneous electrical nerve stimulation(TENS) on the patients with chronic low back pain. The subjects were 32 patients with chronic low back pain average age 39.19 (${\pm}12.96$)years. The duration of chronic low back pain was 8.57 (${\pm}3.07$)months. The treatments were given 15 minutes once a day five a week for two weeks. to low back. Lumbar range of motion(ROM) and Oswestry Disabilitv Index(ODI)) was evaluated before and after TENS application. Each group was compared using Wilcoxon Mann-Whitney test. The results were as followings: Each group showed significant effect. High intensity group showed more effect in low frequency group. High intensity group showed more effect in high frequency group. Therefore, the high intensity can be used more effectively with high frequency for treating chronic low back pain.

• The Journal of the Korea Contents Association
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• v.15 no.5
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• pp.661-673
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• 2015

This study is about the effects of the solution-focused group art therapy which was implemented for school maladjusted adolescents. The pre-test was conducted for 30 students who had difficulties to adapt school life in K middle school at K city, Gyeonggi province. 20 out of the 30 students were chosen to the participants for this study and randomly divided into an experimental group and control group, with 10 in each group. The experimental group received a 12 session solution-focused group art therapy including pre- and post-tests. This study found that the solution-focused group art therapy program improved the school life adaptation competency of the participants. In conclusion, the findings suggest that the solution-focused group art therapy can be a good approach to help adolescents to improve their school life adaptation ability.

• The Korean Journal of Applied Statistics
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• v.32 no.4
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• pp.593-605
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• 2019

Significant literature exists on the area under the ROC curve (AUC) and the volume under the ROC surface (VUS) which are statistical measures of the discriminant power of classification models. Whereas the partial AUC is restricted on the false positive rate, the two-way partial AUC is restricted on both the false positive rate and true positive rate, which could be more efficient and accurate than partial AUC. The two-way partial AUC was suggested as more efficient and accurate than the partial AUC. Partial VUS as well as the three-way partial VUS were also developed for the ROC surface. A proposed AUC is expressed in this paper with probability and integration using two truncated distribution functions restricted on both the false positive rate and true positive rate. It is also found that this AUC has a relation with the two-way partial AUC. The three-way partial VUS for the ROC surface is also related to the VUS using truncated distribution functions. These AUC and VUS are represented and estimated in terms of Mann-Whitney statistics. Their parametric and non-parametric estimation methods are explored based on normal distributions and random samples.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.157-162
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• 2022

The purpose of this study was to verify the changes in Grit and career anxiety among college students by conducting a Grit improvement career group counseling program. The subjects of the study were 24 four-year college students, and the group counseling program was conducted once a week from September, 28, 2021 to November 16, 2021, for a total of 8 sessions. Research tools consisted of Grit and career anxiety, and the collected data were analyzed using SPSS 24.0. The Mann-Whitney U test was performed to secure the homogeneity of the experimental and control groups, and the Wilcoxon signed-rank test was used to verify the effectiveness before and after the program. As a result of this study, it was found that the subjects of the experimental group had higher grit and lowered career anxiety than the control group. Based on the research results, the significance and limitations of this study were discussed.