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중국 남자 탁구 선수 랭킹 산정에 대한 페이지 랭크 알고리즘의 적용
성금환,탕무림,마천방 한국체육대학교 체육과학연구소 2023 스포츠사이언스 Vol.41 No.2
This study aims to verify the validity of a ranking model for Chinese table tennis players using the PageRank algorithm. A total of 629 matches in men's singles, doubles, and team events were selected as the research subjects. The rankings obtained using the PageRank algorithm showed that Ma Long ranked first in men's singles, Ma Long and Xu Xin ranked first in men's doubles, and Guangdong ranked first in the men's team category. Classification accuracy, sensitivity, specificity, and LoI were calculated to validate the ranking model, and the results demonstrated that the PageRank algorithm-based model outperformed the ranking model currently used by the China Table Tennis Association in terms of classification accuracy, sensitivity, specificity, and LoI. This study provides an objective and reliable ranking approach based on the performance of players and teams, which can be considered as an alternative to the existing point-based ranking system.
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뇌졸중 편마비 장애인 대상 운동프로그램이 보행능력에 미치는 영향: 메타분석
성금환,박재현,한민규,탕무림,김향천 한국체육대학교 체육과학연구소 2022 스포츠사이언스 Vol.40 No.2
The purpose of this study is to confirm the effect on the walking ability of stroke gneiss disabled people by considering the exercise program and demographic characteristics in order to confirm the walking ability of stroke gneiss disabled people. In o der to achieve the research purpose, a study on walking-related variables for more than 6 months, and statistics needed to calulate the effect size were collected from 1995 to June 2020. Meta-analysis was performed using 2% comprehensive meta-analysis (CMA) for the data. As a result of meta-analysis, the overall effect size of the exercise program was 0.661, which was effective in improving the walking ability of people with stroke paralysis. Depending on the age of the target, the effect size was 0.577 in the 40s, 0.987 in the 50s, 0.804 in the 60s, and 0.649 in the 70s, which were effective for all ages. As a result of the analysis according to the characteristics of the exercise program, the average difference effect size of less than 5 weeks was 0.830 for less than 0.6415 weeks to 10 weeks, and 0.941 for more than 10 weeks. The average difference effect size of the intervention time less than 60 minutes is 0.815 and is effective in walking ability regardless of exercise time. In the case of the exercise method, resistance exercise 0.758, aerobic exercise 0.854, underwater exercise 0772, and other exercise methods 1.039 were found. Through this study, it can be used as evidence to improve the walking ability of people with stroke paralysis.
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