- 著者
- Koh Sasaki Mitsuyuki Nakayama Kensuke Iwabuch Takumi Yamamoto Ichiro Watanabe Hironobu Shimozono Jun Murakami Takashi Katsuta Ichiro Kono
- 出版者
- SANKEI DIGITAL Inc.
- 雑誌
- Journal of Digital Life (ISSN:24366293)
- 巻号頁・発行日
- vol.2, pp.2022.2.5, 2022 (Released:2022-03-31)
The aim of this study was to clarify the attack-defence performances of rugby sevens in 2010-2020 seasons, 4,074 matches. Firstly, averaged try scoring rate and try conceding rate of every teams were drawn in two-dimensions space. Hypothesis 1 was that the achievement values of the upper teams could be clarified. Receiver-Operator-Curve analysis was used to understand how attack-defence indicators correctly diagnose the world rankings. Secondly, the 22m entry attack-defence indicators were drawn in two-dimensional space. Clustering analysis of ranking teams was executed using try scoring rate, try conceding rate, 22m attack-defence indicators. Hypothesis 2 was that the clustering characteristics of upper teams can be clarified by these indexes. Thirdly, network analysis was executed to clarify what kind of characteristic in relationship among the ranking, team performance, and individual performance. The ROC analysis showed the specific achievement level of the top-ranking teams with high accuracy (hypothesis 1). Cluster analysis extracted 4 groups. The gradual attack defence standard values were obtained (hypothesis 2). Network analysis showed the relationship structure among the ranking, the team performance, and the individual performance with some interesting results concerned the dependence tendency changing on the ranking stage (hypothesis 3).
- 著者
- Mitsuyuki Nakayama Yasuhiro Asari
- 出版者
- The Japanese Circulation Society
- 雑誌
- Circulation Journal (ISSN:13469843)
- 巻号頁・発行日
- vol.72, no.8, pp.1385-1387, 2008 (Released:2008-07-25)
- 参考文献数
- 13
- 被引用文献数
- 4 5
Patients demonstrating critical limb ischemia with a long-distance occlusion of the major arteries are sometimes poor candidates for bypass surgery, because tandem occlusion complicates distal anastomoses and poor run-off causes early occlusion of bypass grafts. In order to resolve these problems, angiogenesis therapy was attempted by subcutaneous injection of granulocyte colony-stimulating factor either before or after peripheral bypass surgery in 2 cases. (Circ J 2008; 72: 1385 - 1387)