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한국 프로농구 외국인 선수들의 팀내 기여도 및 효율성 평가
김세중(Kim, Sea-Joong),도재현(Do, Jae-Hyun) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.6
The purpose of this study were to apply to variety method of analysis and compare these on efficiency and contribution of Korean basketball Foreign player. For this purpose we suggested some APBR metrics formulas on evaluating on efficiency of Korean basketball Foreign player. Data were records of KBL foreign basketball player performed for 2015-2016 season and collected from KBL homepage. To evaluate efficiency and contribution of foreign players, we applied APBR metrics formula to their records, then compared each index calculated by these formulas. In consequence, variety each evaluation index of Korean Foreign basketball players had similarity, however, some evaluation index appeared to related specific performance. Therefore, some evaluation index could be limited whole performance of each Korean Foreign basketball player by stressing specific performance.
한국 프로농구 선수들의 효율성과 팀 승률 변화에 미치는 영향 및 선수교체 전략에서의 활용 방안
김세중(Kim, Sea-Joong),허종관(Heo, Chong-Kwan) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.3
The purpose of this study were to apply to variety method of analysis and compare these on efficient of Korean basketball player. For this purpose we suggested a valid mathematical and statistical model on evaluating on efficient of Korean basketball player, then we discussed availability about these results or index. Also, we gathered 2015-2016 season, 2016-2017 season, 2017-2018 season KBL game data from KBL homepage, applied APBR metrics formula, And compared these index. In consequence, variety each evaluation index of Korean basketball players had similarity, however, some evaluation index appeared to related specific performance. Therefore, some evaluation index could be limited whole performance of each Korean basketball player by stressing specific performance.
코어 운동 프로그램이 건강 관련 체력에 미치는 효과에 대한 메타분석
김세중 ( Kim Sea-joong ),도재현 ( Do Jae-hyun ) 대한체육학회(구 한국유산소운동과학회) 2020 대한스포츠융합학회지 (jcses) Vol.18 No.2
The objective of this study was to estimate the magnitude of the core exercise programs' effectiveness. To achieve this objective, this study identified the goals of the health and fitness-related core exercises proposed by previous studies as dependent variables and evaluated the effects of these programs on the goals by applying a meta-analysis methodology. This study measured and analyzed using the R program to evaluate the effectiveness of exercise programs. The results of the study are as follows. The core exercise programs significantly affected health-related physical fitness. It was found that the core exercise programs were effective. The effects varied according to the characteristics of the study subject. Particularly, it was found that the effectiveness of the core exercise program was determined by the characteristics and attributes of the study subject. In conclusion, the effectiveness of the provided core exercise program was decided by the attribute, range, and shape of the subject who was the target of the exercise program for enhancing health-related core strength.
Mouthguard use in Korean Taekwondo athletes - awareness and attitude
Sea-Joong Kim,Gyu-Tae Kim,Deok-Won Lee,Chong-Kwan Heo,Jung-Woo Lee 대한치과보철학회 2013 The Journal of Advanced Prosthodontics Vol.5 No.2
PURPOSE A survey was performed to identify the level of mouthguard use, awareness, wearability issues and attitude toward mouthguard among elite Korean Taewondo athletes. MATERIALS AND METHODS Survey questionnaires were given to 152 athletes participating in the Korea National Taekwondo team selection event for the 2010 Guangzhou Asian Games. Questionnaires consisted of three sections, mouthguard awareness, reasons for not wearing mouthguard and the last section to test the level of acceptance on current mouthguard and when the identified problems were resolved. For analyzing difference among response, χ2 test was used and significant level (α) was set up as 0.05. RESULTS Responses in each of items showed significant difference (P<.001). Majority of response regarding each question: Majority of respondents believed that mouthguard were effective in preventing injuries (36.4%) but the result suggested that the provision of information on mouthguard to athletes was inadequate (44.0%) and the result showed that respondents were not greatly interested or concerned in relation to the mandatory mouthguard rule (31.6%). Although the responses on the level of comfort and wearability of mouthguard were negative (34.8%), athletes were positively willing to wear mouthguard if the problems rectified (51.2%). CONCLUSION Considering the high level of willingness to wear mouthguard if the problems rectified, it is thought that together with efforts in providing more mouthguard information, the work of sports dentistry to research and improve mouthguard will be invaluable in promoting mouthguard to more athletes.
Sea Hyun Kim,Young Seok Jang,Jin Gyu Han,Hee Won Seo,In Hyeop Park,Kye Joong Cho 한국육종학회 2007 한국육종학회지 Vol.39 No.2
This study was conducted to clarify the relation of the species of genus Sorbus in Korea based on multivariate analysis for the morphological characteristics and DNA polymorphism. Twenty-eight quantitative characters were assessed and analyzed by the principal component analysis and UPGMA cluster analysis. From the principal component analysis of 28 quantitative characters, three principal components (PC’s) explained the variation of inter-specific relations among the genus Sorbus. The first PC’s explained 58.95% of the variation with the Eigenvalue of 16.5, and the second and third PC’s showed the Eigenvalue of 8.3 and 3.1 and explained 88.74% and 100.0% of the variation, respectively. Especially, the first PC’s was related in order of the fruit width (FW) and length of terminal leaflet (LTL), petal length (PL), width of terminal leaflet (WTL), and diameter of winter bud (DWB). The second and third PC’s were involved in order of the No. of leaflet (NL), No. of fruit per fruiting lateral (NFL), length of upper rachis (LUR), and diameter of rachis (DR), No. of pistil (NP), respectively. Cluster analysis using them UPGMA method based on the principal components of four species of the genus Sorbus divided into two groups. Group Ⅰ comprises Sorbus commixta and S. sambucifolia var. pseudogracilis, and Group Ⅱ consists of S. amurensis and S. aucuparia. The pattern of DNA polymorphism of the 56 inter-simple sequence repeat (ISSR) markers revealed that different taxa shared different sets of bands, and DNA analysis is useful for taxonomic study on the genus Sorbus.
고재경,한중수,김영미,김영식,계세협 한양대학교 의과대학 1996 한양의대 학술지 Vol.16 No.2
Activities of nucleases (acid DNase and neutral RNase) known to be involved in carcinogenesis and suppressionof cancer were determined in cancer tissue, serum and ascitic fluid of patients withhepatocellular carcinoma and were compared with those ofthe controls. Also studied were nucleases and nuclease-inhibitors isolated from hepatocellular carcinoma tissue and ascitic fluid of the cancer patients to evaluate the properties and interactions between them. Activites of DNase, RNase and RNase inhibitor were significantly increased, suggesting the use of the nucleases and the inhibitor as biochemical markers for the hepatocellular carcinoma. DNase activity was not detected, RNase activity was increased and RNase inhibitor activity was unchanged in both serum and ascitic fluid of the hepatocellular carcinoma patients. The results indicated that RNase was released into the body fluid from the cancer tissue and that the RNase could be used as a diagnostic marker for the hepatocellular carcinoma. DEAE-cellulose column chromatographical analyses revealed that DNase was isolated as a single enzyme and RNase as seven isozymes from the hepatocellular carcinoma tissue. The DNase isolated was perferentially cleaved ds DNA over ss DNA and was endonuclease in nature (majority of hydrolytic products of DNA by the DNase were oligodeoxyribonucleotides), suggesting an important role of the DNase in carcinogenesis of the liver. Of seven RNase isozymes isolated from the hepatocellular carcinoma tissue, isozyme I exhibited nonsecretory nature of RNase and other six isozymes secretory nature of the enzyme. Activity of RNase isozyme V was greatly increased and the activity of inhibitory complexed with the isozyme V was also increased in the cancer tissue. RNase in ascitic fluid of the cancer patient was separated into four isozymes, of which isozyme I exhibited mixed form of secretory and nonsecretory nature and greatly increased in its activity. RNase isozyme V isolated in the hepatocellualr carcinoma tissue was not detected in the ascitic fluid. The results indicated that RNase isozyme V was limited in the cancer tissue and that RNase isozyme I and V and inhibitors associated with these isozymes might be involved in carcinogenesis processes, supression of cancer and maintenance of hepatocellular carcinoma through their interactions.
허종관(Heo, Chong-Kwan),김세중(Kim, Sea-Joong) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.5
The purpose of this study were to introduce and practically make adapt statistical method for “how sports strategies were selected”. For this study, We introduced statistical method to select strategy suggested by Skinner(2011) and adapted it to some situation based on 2014~2015 season’s game results from KBL web-site. Through adapted results, we confirmed applicability and usefulness of statistical method suggested by him. In conclusion, statistical method suggested by him was able to adapt on situation of game opening part and late part of underdog. It appeared to be appropriate method for estimating ratio of optimization between two scoring strategies, also. Therefore, this statistical method will be able to adapt a personal match with differential scoring system, that is baseball, soccer, Taekwondo, Judo etc.. Moreover, it will be able to used to select tactics without differential scoring system. Also, optimization method of scoring strategies will make sufficient use of balanced distribution among using vary these strategies, and even be adapted on distribution of pass and attacking direction.