About AKAHIRA MASAFUMI
About 筑波大 数理物質系
About 日本物理学会誌
About earthquake disaster
About large earthquake
About statistics (science)
About t-distribution
About statistical estimation
About data analysis
About chi-square test
About Great East Japan Earthquake
About The 2011 off the Pacific coast of Tohoku Earthquake
About Great East Japan Earthquake
About Seismic activity
About Statistics
About 歴史
About 事象
About 統計
About 推測
About 進展