著者

山本 桂一郎 水谷 淳之介 早川 幸弘 浜田 真

出版者

一般社団法人 品質工学会

雑誌

品質工学 (ISSN:2189633X)

巻号頁・発行日

vol.14, no.4, pp.49-57, 2006-08-01 (Released:2016-09-30)

参考文献数

6

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Introductory quality engineering education was studied. There has been much dispute regarding this type of education, in which the participants must struggle to make the initial paradigm shift. Quality engineering instructors have had much difficulty in motivating their students to take up quality engineering. This study identified current problems in introductory quality engineering education. In particular, instructional materials that will efficiently show the effectiveness of quality engineering and enable students to be educated effectively were studied.

著者

早川 幸弘 水谷 淳之介 山本 桂一郎 鴨下 隆志 矢野 宏

出版者

品質工学会

雑誌

品質工学 (ISSN:2189633X)

巻号頁・発行日

vol.18, no.2, pp.50-63, 2010-04-01 (Released:2016-10-17)

参考文献数

7

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Earthquake prediction by the MT-system was proposed by Genichi Taguchi in 1995. Studies started in the Yano laboratory at Tokyo Denki University in 2004 demonstrated that earthquake prediction was possible to some extent, but there was considerable prediction error. A new study was started in line with new developments in the MT-system. Data collection was started in Tsukuba district. This paper gives a periodic analysis of seismic waveforms in the Tsukuba district and obtains the distances of ground vibrations by using the RT method, with the variance of the period as an attribute. The possibility of prediction by a further two-tail T method is shown, based on the variation of the distance over time. The estimated S/N ratio was -0.176 db and the sensitivity was 0.016 db. The prediction error was ±10% at a vibration velocity of 20μm/s.