• The Korean Journal of Applied Statistics
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• v.28 no.3
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• pp.573-581
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• 2015

We study problems of sample size determination for one-sample location tests. A simulation study shows that sample size calculations based on approximated distribution do not achieve the nominal level of power. We investigate sample size determinations based on exact distribution and with a power that attains the nominal level.

• Physical Therapy Korea
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• v.22 no.3
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• pp.91-97
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• 2015

This study was conducted to investigate the effects of the removable ankle-foot orthosis (RAFO) which was developed to improve the gait of stroke patients. The subjects of this study were five stroke patients who agreed to participate in this study by signing a written consent form. To verify gait improvement after wearing the orthosis, a Timed Up and Go test and Functional Gait Assessment were performed, and spatiotemporal gait variables such as gait speed, cadence, stride length, double limb support, and the efficient gait test of body sway angle were performed. For every variable, the differences prior to and after wearing the RAFO were compared using the Wilcoxon signed-rank test. Every gait variable improved significantly after wearing the RAFO compared to prior to wearing it. The pilot study will enhance future efforts to evaluate orthotic function objectively during gait in stroke patients.

• Physical Therapy Korea
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• v.5 no.3
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• pp.48-55
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• 1998

The purpose of this study was to identify vital capacity (VC) in relation to the changing position of 19 patients with spinal cord injury (SCI) and 20 normal controls. Among the 19 SCI patients, there were 9 quadriplegics and 10 paraplegics. The vital capacity was measured in each subject during sitting, standing, lying, and head down position of 30 degrees. The data were analysed by the Kruskal-Wallis test, Mann-Whitney test, and Wilcoxon signed rank test. For the SCI, significant difference of VC accoring to the 4 positions between quadriplegics and paraplegics. In the control group, significant difference of VC according to the 4 positions. In 4 positions the VC of men were significantly larger than that of women between two groups. No statistical significant difference was shown in VC by the postural change between quadriplegics and paraplegics.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.4
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• pp.1699-1705
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• 2012

This study was conducted to examine the differences of the quality of chest compression between 10 cm higher position of rescuer's knee from the bottom and its bottom position during implementation of CPR. It selected randomly subjects out of 66 students who attend the Dept. of Emergency Medical Technology in G college, G metropolitan city as the first grader and divided them into 31 experimental group and 32 control group from Nov. 8 to 9, 2011. Mattress was spread 10 cm higher from the bottom(material: B4 Copy Paper) and on the bottom(material: PVC, size: $185{\times}125{\times}0.65cm$) and only chest compression was conducted for 2 minutes. Experiment was conducted with 1 Resusci Anne mannequin and the results of experiment were recorded with Laerdal PC Skill Reporting System. Data collected were analyzed with $x^2$-test and Fisher's exact probability test using SPSS 14.0 for Window, Mann-Whitney U-test, and Wilcoxon signed rank test. As a result of the study, it was found that 10 cm higher position of rescuer knee from the bottom than the bottom position and group below 170 cm in their height and 65 kg in their weight were more effective in proper depth of chest compression and average chest compression depth.

• Journal of Christian Education in Korea
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• v.64
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• pp.237-287
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• 2020

This study was developing group counseling program for sexual education for Christian young adults. and its effects were proven. For this purpose, this study of unmarried Christian young adults ranging 30 from the age 20~35 years old who are attending church C and S located in city of C at Kyungnam province. The subject and control group each had 15 people who separately participated in this program once a week for 120 minutes, 12 times in total. The control group did not receive any feedback after the sessions. group counseling program for sexual education was based on Crabb's biblical counseling model and McMinn's cognitive therapy. Using 12 kinds of cognitive therapy techniques. for its effects were verified. used The sexual knowledge scale standardized model of a college student set by Jeon Gyungsook, Lee Hyoyoung, Lee Seonja, The sexual attitude scale standardized model for a college student set by Ho Seonmin, The sexual decision making scale developed by Sun Mikyung. The data analysis consisted of Cronbach's α test, χ2-test, Mann-Whitney U test, Friedman test, a χ nd Wilcoxon signed-rank test. The result of this study is improve the sexual knowledge, show the conservative tendency of sexual attitudes, and prove the increase in the ability to make responsible sexual decisions of Christian young adults. Following up, this study spreads awareness of the true meaning of sexual being as illustrated from the bible and implies a beneficial program within the church that promotes a healthy life and reconciliation between self, neighbors, and God in a life according to the purpose of creation and order.

• Journal of Digital Convergence
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• v.12 no.8
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• pp.493-499
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• 2014

This study aims to verify the effects of the life redesign educational program based on the baby boomer (11 members of experimental group, 12 members of control group). The program was conducted for two hours two times in a week in the area of Chungnam (Total 8weeks 16sessions). First, in the result of the Wilcoxon's pairs signed-ranks test between the pre-post tests for the analysis on the program effectiveness of the experimental group of baby boomer, the baby boomer of experimental group showed an improved perception of preparing the volunteer work in the perception of preparing their old age, and there was no pre-post significant differences in the control group. In case of the experimental group, perception of the post-retirement preparation, such as a physical preparation, emotional preparation, financial preparation, volunteer work preparation and leisure activities preparation increased in average. Second, the satisfaction for the program's educational process, educational contents, educational data, educational method, instructor and the educational environment were shown to be more than 3.5 points out of 5 points in full.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.36 no.3
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• pp.298-305
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• 2003

Seasonal variation in species composition of fish in the estuary of Saemangeum water in the western coast of Korea was determined using seasonal samples collected by an otter trawl from April 2001 to February 2002. Species compositions did not differ significantly among the 4 stations (p>0.05, Wilcoxon signed-rank test). The cumulative number of species and species diversity (H') approached asymptote after four 30-min trawl hauls. Therefore 30-min trawl samples from each of the four stations were pooled to represent each season. A total of 45 species 2758 individuals and 30,346.8 g of fish were collected during the study period. Of the fish collected Leiognathus nuchalis, Synechogobius hasta, Neosalanx jordani, Konosirus punctatus and Chaeturichthys stigmatias predominated in abundance accounting for $68\%$ of the total number of individuals. Seasonal variation of fish abundance showed a similar trend to those of the other western coastal waters of Korea. The resident species were collected only in spring and autumn. Number of species and biomass were highest in summer due to the catch of many migrating species. In winter catch amount was low, and only 7 species were collected.. Brackish water fishes were more abundant in the study area, and Johnius grypotus and Cynoglossus joyneri were not premominated compared to the other coastal waters. This difference in species compositions may be related to the lower salinity in this estuarine habitat than in the other western coastal waters of Korea.

• Journal of Dental Rehabilitation and Applied Science
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• v.30 no.3
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• pp.223-230
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• 2014

Purpose: The purpose of this study was to evaluate the improvement and posttreatment stability of patients treated with extraction of lower incisors. Materials and Methods: The total of 20 patients with extracted lower incisors were analyzed by means of diagnostic models and panoramic x-rays at the time of initial, final and after 2 years of retention period of the treatment. Irregularity index, overjet, overbite, tooth size-arch length discrepancy (TSALD), intercanine width, intermolar width and American Board of Orthodontics cast/radiographic evaluation (ABO-CRE) were analyzed. Statistical analysis was performed using Wilcoxon signed-rank test. Results: After treatment, irregularity index showed significant decrease (P = 0.000). TSALD showed significant increase (P = 0.028). During retention period, irregularity index showed significant increase (P = 0.001). For ABO-CRE, total score showed significant decrease after treatment (P = 0.000) and showed average decreased which was not significant result (P = 0.053). Conclusion: Through evaluation of stability of extraction of lower incisors by means of diagnostic models and panoramic x-rays, it can be concluded that lower incisor extraction treatment had been stable for 2 years after treatment.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.235-242
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• 2019

The present paper aims to examine how prospective teachers' experience of creating UCC materials affects their teaching expertise and creativity. The group of subjects consists of a group of 19 students majoring in Japanese under the teacher certificate curriculum at N University located in Cheonan. The collected data was analyzed using a set of statistical methods including frequency analysis, descriptive statistics, correlation analysis, Wilcoxon Signed Rank Test using SPSS WIN 21.0. It was found that there was a positive correlation between their UCC experiences and their teaching subject expertise/creativity. It was also found that the former exerted a statistically significant effect on the latter. The results of the current research might suggest that teachers' teaching methods in the field are very important. It is hopeful that innovative teaching methods and activities will be introduced and expanded in the filed to produce more effective education.The Korea Convergence Society.

• Archives of Plastic Surgery
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• v.39 no.5
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• pp.452-456
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• 2012

Background Phosphatidylcholine (PPC) and deoxycholate (DCA) compound has been recently used for the purpose of partial lipolysis and is valued for its efficacy and lower invasiveness compared to liposuction and dermolipectomy used previously. In this article, the authors discuss the efficacy of the PPC dissolved in DCA via an experimental rat study model, along with suggesting a useful animal experimental model for the study of adipose tissue and lipolysis. Methods Bilateral inguinal fat pads of an experimental rat were elevated with the deep inferior epigastric vessel as the sole vascular pedicle. Normal saline was injected on one side as a control group and a PPC and DCA compound was injected on the other side. After 4 days, the rats were euthanized for microscopic tissue examination. The pathology was scored by a sem-iquantitative system in 4 categories: normal fat amount, fat necrosis, inflammatory activity, and stage of fibrosis. A Wilcoxon signed-rank test powered by SPSS packet program was used for statistical analysis and to determine significance. Results Microscopic examination was performed on the obtained samples, and the experimental data of all four categories showed significant histologic differences compared to the control group. All of the data also showed statistical significance by the Wilcoxon signed-rank test (P<0.01). Conclusions In the inguinal fat pad rat model, the control group and the experimental group had a differed significantly in the amount of normal fat tissue, inflammation, necrosis, and fibrosis. We recommend the rat inguinal fat pad model used in this study, as it is likely to be useful in related research.