http://hdl.handle.net/11605/30 2015-3 2026-03-22T22:03:59Z http://hdl.handle.net/11605/48 タイトル: 剛飛翔体の中速度衝突を受けるコンクリート板の損傷に関する基礎的考察 著者名: 別府, 万寿博; 上野, 裕稔 抄録: This study is intended to investigate failure mechanism of plain concrete plates subjected to medium velocity impact. In a series of tests, a spherical nose projectile of a mass of 8.3kg and a concrete plate of 18cm in thickness were used. In order to examine the impact behavior, impact load, reaction force and strain time history were measured. Test data revealed that the failure of the concrete plate under medium velocity impact loading was generated after the reaction force emerged unlike high velocity impact condition. In order to estimate the failure state of a concrete plate subjected to medium velocity impact, the theoretical model proposed by Miwa et al. was applied and validated through comparison between theoretical and experimental results. 2015-02-28T15:00:00Z http://hdl.handle.net/11605/31 タイトル: 定常加速度系での量子論における局在性 著者名: 尾高, 一彦; 松本, 隆志 抄録: We construct states localized at a point on stationary coordinate systems in the at space- time. In a inertial system two kinds of localized states have been proposed by Newton-Wigner and Philips, respectively. These states are interpreted from the point of view of the quantum eld theory based on the particle picture and extended to stationary coordinate systems. In the Rindler coordinates and the Born coordinates, especially, localization of the Newton-Wigner states is checked by explicit calculation. 2015-02-28T15:00:00Z