著者

佐藤 皓也

出版者

日本武道学会

雑誌

武道学研究 (ISSN:02879700)

巻号頁・発行日

pp.2106, (Released:2021-08-11)

参考文献数

188

---

The All Japan Kendo Federation (AJKF) was established in October 1952. After World War II kendo was revived as a means of physical education and a sporting activity, with its organization democratically managed, and rational match processes and judging methods being considered while spreading and developing as a competitive sport (a general term for sports that emphasize winning, losing, and ranking). On the other hand, in 1975 the AJKF established its own philosophy, stating that “kendo is to discipline the human character through the application of the principles of the katana (sword)”, which is slightly different in meaning from the philosophy of sports, which states that “sports are athletic competitions and physical activities that are undertaken for the sound development of body and mind”. (Sports Promotion Act, 1961) To clarify the intent and content of this concept, it is necessary to re-read the historical development of kendo as a competitive sport.From the Meiji period onward, among the first to practice competitive sports were students who belonged to the athletic associations of Tokyo Imperial University and Tokyo Commercial High School, and the alumni association of Daiichi Higher Middle School. In such a climate, Western competitive sports were actively practiced in the old junior and senior high schools during the Meiji period. Kendo was developed on the model of a competitive sport rather than as a traditional budo.In the history of student kendo, it was Kyoto Imperial University that pioneered the national tournament. Kumao Ono points out that it was the former Daisan High School (hereafter, “Sanko”) that played a part in this. I was interested in the description of the Sanko Kendo Club members during the Meiji period, who tried to understand kendo in terms of the new concept of “athletics”, which at that time was a collective noun for all Western competitive sports. However, I could not find any previous studies. Therefore, as part of my search for the roots of the transformation of kendo into a competitive sport, I decided to first focus on the Sanko Kendo Club, which seems to have been a forerunner of this movement, in order to understand the actual state of students’ attitudes toward kendo during the Meiji and Taisho periods.The purpose of this paper is to clarify the actual state that the old high school system played in the development of kendo as a competitive sport, and to examine in detail the magazines Gakusui-kai Zasshi and its predecessor, Jinshin-kai Zasshi, which were published independently by the Gakusui-kai (alumni association) of Sanko, as well as other Sanko-related materials such as the Jinryo Shoshi (Short History of Jinryo) and the Sanko Hachiju-nen Kaiko (Sanko 80th Year Review).(View PDF for the rest of the abstract.)

著者

家入 正治 高橋 仁 皆川 道文 澤田 真也 成木 恵 佐藤 皓 三輪 浩司 黒澤 真城

出版者

大学共同利用機関法人高エネルギー加速器研究機構

雑誌

基盤研究(B)

巻号頁・発行日

2009

---

原子核・素粒子反応実験において、毎秒10^7までの画像事象を選別し処理可能な『超高速イメージ撮像管』の開発を行った。蛍光体の残光に頼らず、撮像管内部の電子の移動を制御する事により、画像保持すなわち"イメージ遅延機能"を有する。試験機は完成し、基本性能試験を行った。

著者

佐藤 皓明 遊佐 泰紀 岡田 裕

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.854, pp.17-00300-17-00300, 2017 (Released:2017-10-25)

参考文献数

20

被引用文献数

3

---

In this paper, formulations and some computational results of cycle jump method based on the nonlinear finite element method are presented. Problems, involving nonlinear cyclic deformation, such as low cycle fatigue problems can be solved by the proposed cycle jump method. To solve the problems of nonlinear cyclic deformation of structure by the nonlinear finite element method with a cycle-by-cycle approach, a large amount of computational time is generally required. Thus a cycle jump method is presented from a view point of temporal multi-scale analysis. Then, an alternative analytical procedure consisting of three steps is proposed. They are a few cycles of nonlinear analysis in a cycle-by-cycle fashion, computations of jumps of strain history dependent quantities (extrapolations) based on the results of the cycle-by-cycle analysis and a cycle jump for several dozen to several hundred cycles using the results of the extrapolations. The results of cycle jump analyses are presented and their accuracies are critically examined. It was found that the results of several load cycles at the beginning of each cycle-by-cycle analysis step should be excluded from the computations of the extrapolation step.