• Journal of Music and Human Behavior
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• v.6 no.2
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• pp.1-23
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• 2009

This study aims to identify the effect of music psychotherapy on motivation for learning in the underachieving student. The study divided nine children into two groups and placed four children in a test group and five children in a control group. After conducting a pre-test, the researcher performed music psychotherapy with the four children in the test group for about 12 weeks, twice a week, totaling 18 sessions. Quantitative data were measured in pre-and-post tests using Mann-Whitney's U-test, and the effects of the therapy were analyzed using Wilcoxon. The findings of this study were as follows. Music psychotherapy was shown to be effective for improving all types of motivation for learning in underachieving students (p < .001). This was shown by assessing improvements in the experimental group across four sub-areas of motivation for learning (p < .1), and directly measured by examining the subjects' lingual responses related to motivation for learning. These results demonstrate that music psychotherapy is effective for enhancing motivation for learning in underachieving students.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.7
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• pp.463-474
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• 2020

This study aims to investigate the impact of COVID-19 pandemic on the stock markets of sixteen countries. Pooled OLS regression, conventional t-test and Mann-Whitney test are used to estimate the results of the study. We construct a weekly panel data of COVID-19 new cases and stock returns. Pooled OLS estimation result shows that the growth rate of weekly new cases of COVID-19 negatively predicts the return in stock market. Next, the returns on leading stock indices of these countries during the COVID-19 outbreak period are compared with returns during the non-COVID period. We use a t-test and Mann-Whitney test to compare the returns. The results reveal that investors in these countries do not react to the media news of COVID-19 at the early stage of the pandemic. However, once the human-to-human transmissibility had been confirmed, all of the stock market indices negatively reacted to the news in the short- and long-event window. Interestingly, we noticed that the Shanghai Composite Index, which was severely affected during the short-event window, bounced back during the long-event window. This indicates that the Chinese government's drastic measures to contain the spread of the pandemic regained the confidence of investors in the Shanghai Stock Market.

• Journal of the Korean Society of Physical Medicine
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• v.7 no.3
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• pp.259-265
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• 2012

Purpose : Patients with Parkionson's disease have a temporal and spatial restriction for their's exercise treatment. The aim of this study is to verify the effectiveness of e-exercise program on balance, gait, and endurance ability in people with Parkinson's disease. Methods : Eighteen participants, with Parkinson's disease that ranged from stage to on the Hoehn & Yahr scale, were assigned to two group. Two group were divided into on-line group that exercised in home by computer video, and off-line group that exercised in clinical center. Exercise program that included 3 sections (warm-up, main exercise, cool down)-5 parts(stretch, strength, balance, gait, stretch) was used to train for participants. We used the functional reach test for balance ability, timed up and go test for gait ability, 6 minute walking test for endurance ability. Wilkoxon sign lank tests were used to assess the difference of balance, gait, and endurance ability in pre-and post test each groups. Mann-whitney tests were used to assess the difference of balance, gait, and endurance ability between groups. Results : Wilkoxon sign lank tests revealed that both group were improved the balance, gait and endurance agility by e-exercise program intervention. Mann-whitney tests showed that there were no differences between groups in the variation of balance, gait, endurance ability. Conclusion : We believe that exercise program with on-line(e-exercise program) is an effective intervention for people with Parkinson's disease and is no different than off-line exercise group in the variation of balance, gait, endurance ability.

• Korean Journal of Clinical Laboratory Science
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• v.41 no.2
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• pp.62-66
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• 2009

HbA1c is the major fraction of glycated hemoglobin, and used primarily to identify the average plasma glucose concentration over prolonged periods of time, mostly 2-3 months. It is used as markers for the diagnosis and monitoring of diabetic patients and increasingly used a marker in health screening check up for general populations. In this study, HbA1c was measured with Cobas integra 800 (Roche Diagnostics, Mannheim, Germany), using immunoturbidimetry principles. We established the reference interval for HbA1c with Cobas integra 800 and evaluated its significance. The study subjects were 36,140 (male 57.5%, and female 42.2%) who visited the Health Promotion Center of a tertiary care center in Seoul for health checkup from January to September, 2008. HbA1c levels were measured with immunoturbidimetric method. Statistical evaluation was done with SPSS. Comparison between male and female was checked with Mann-Whitney test, and among age groups with Kruskal-Wallis test. Reference interval for HbA1c was from 4.8% to 6.1%. There was no significant difference between male and female with Mann-Whitney test (P=0.539). There was significant difference among age groups with Kruskal-Wallis test (P<0.05). Reference interval for HbA1c with Cobas integra 800 was 4.8~6.1%, which was different from conventional one, 4.4-6.4%. Establishment of reference interval for each principle is needed.

• Journal of Technologic Dentistry
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• v.18 no.1
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• pp.67-72
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• 1996

This test is verifying for influence of W/P ratio of investment upon dental prosthesis Firstly we made 40 MOD die and divide 4 groups, each group take 0.2 different w/p ratio grade such as 0.35, 0.37, 0.39 and 0.41. The method of data analysis applied were by ANOVA, Tukey test and Mann-Whiney and Kruskal Wallis test. The finding of this study were as follows : 1. The 0.37 w/p ratio group showed most accurte margin due to $15.8{\mu}m$ gap between margin and die which keep up with manufacture's instruction and 0.35 w/p ratio group was followed as second accuracy group o 새 $48.3{\mu}m$ gap between margin and die, 0.39 w/p ratio group showed $101{\mu}m$ gap and 0.41 w/p ratio group showed $129.8{\mu}m$ gap. 2. As to the relationship of the margin accuracy between 4 different grade of w/p ratio groups, each group was statistically significant(P<0.01). Also the all groups were statistically significant except between 0.35 and 0.37 groups between 0.39 and 0.41 groups, and between 0.35 and 0.39 groups. 3. A consequence of Mann-Whitney & Kruskal-Wallis test for marginal accuracy between 4 different grade of w/p ratio was statistically significant as same as above ANOVA test result. Also Tukey test for verifying similarity from each group showed same as above.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.466-476
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• 2011

The present research is aimed to observe the effects on the peer counseling program which can increase the communication skills and social efficacy of high school students. In order to do the present research, I have taken 16 high school students, who want to join to this research, within A city. I have separated those students into two groups: an experienced group of 8 students and a controlled group of 8 students. Mann-Whitney U and Wilcoxon Signed Ranks test were adopted to analyze collected data from the peer counseling program. The results of this research indicated that the level of communication skills have been increased after peer counseling intervention program of the experienced group, and the level of occupational stress also have been increased after peer counseling intervention program of the experienced group. This result showed that, the peer counseling program could stimulate the communication skills and social efficacy of experienced group significantly comparing with the result of the controlled group. From the result I have confirmed that, the peer counseling program have positive effects to increase the high school students' communication skills and social efficacy.

• Journal of Wetlands Research
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• v.12 no.3
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• pp.79-97
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• 2010

The purpose of this research is to apply the neural networks models for the hydrologic disaggregation of the yearly pan evaporation(PE) data in Republic of Korea. The neural networks models consist of multilayer perceptron neural networks model(MLP-NNM) and support vector machine neural networks model(SVM-NNM), respectively. And, for the evaluation of the neural networks models, they are composed of training and test performances, respectively. The three types of data such as the historic, the generated, and the mixed data are used for the training performance. The only historic data, however, is used for the testing performance. The application of MLP-NNM and SVM-NNM for the hydrologic disaggregation of nonlinear time series data is evaluated from results of this research. Four kinds of the statistical index for the evaluation are suggested; CC, RMSE, E, and AARE, respectively. Homogeneity test using ANOVA and Mann-Whitney U test, furthermore, is carried out for the observed and calculated monthly PE data. We can construct the credible monthly PE data from the hydrologic disaggregation of the yearly PE data, and the available data for the evaluation of irrigation and drainage networks system can be suggested.

• Journal of The Korean Association For Science Education
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• v.22 no.2
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• pp.252-260
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• 2002

The types and the characteristics of students' responses to anomalous data in studying 'boiling point' were investigated, and the degree of cognitive conflict and conceptual change were compared by students' cognitive variables. Tests regarding field dependence-independence and logical thinking ability, a preconception test, and a test of responses to anomalous data were administered to 137 sixth graders. Among them, 90 students whose preconceptions were consistent with the presented initial theory were selected. After learning the scientific concept, students' conceptual change was examined. Six types of responses identified were as follows: Rejection, reinterpretation, exclusion, uncertainty, belief decrease, and theory change. The main responses were rejection (33%) and theory change (39%). The results of Mann-Whitney U test indicated students who were field independent and had higher logical thinking abilities felt more cognitive conflict and exhibited more conceptual change.

• Journal of Convergence for Information Technology
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• v.8 no.4
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• pp.55-62
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• 2018

This is a primitive experimental study to find effects of 10 times classwide peer tutoring on academic achievement, self-leadership and interpersonal ability of nursing students. According to the results of Mann-Whitney U and Kruskal-Wallis test using SPSS/WIN 19.0, the motive of admission was the factor affecting the most mean ranks related to general characteristics. There were significant differences between academic achievements, cognitive strategy, and promoting relationships(p<.001; p=.020; p=.040), and there was a positive correlation between self-leadership and interpersonal ability(r=.296, p=.041) in Wilcoxon Signed Ranked test. As results of this study, the classwide peer tutoring could be applied in nursing classes for enhancing students' competence, but the researcher suggests further researches with wider range of subjects and setting control group.

• 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.