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松川, 順子 ; Matsukawa, Junko
概要:
金沢大学人間社会研究域人間科学系<br />Two experiments were conducted to examine the effect of visual similarity on picture categorizatio
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n (Experiment 1) and picture identification (Experiment 2). In Experiment 1 subjects took more time to categorize the pictures of fruits, visually similar to vegetables, than the words which showed their names. On the contrary, subjects took less time to categorize the pictures of animals, visually dissimilar to fruits and vegetables, than the words. In Experiment 2, it took more time for subjects to identify the pictures of animals primed by the same category members than those primed by fruits. The pictures of animals showed the highest visual similarity among three categories. Those results suggest that visual similarity could affect picture categorization and identification as semantic similarity could. We also discussed the notions of visual representation and category specificity in semantic processing.<br />出版者の許可を得て登録
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2. A Possible Emission Feature in an X-Ray Afterglow of GRB 970828 as a Radiative Recombination Edge
Yoshida, A ; Namiki, M. ; Yonetoku, Daisuke ; Murakami, T. ; Otani, C. ; Kawai, N. ; Ueda, Y. ; Shibata, R. ; Uno, S.
概要:
金沢大学大学院自然科学研究科物理学<br />A gamma-ray burst (GRB) of 1997 August 28 was localized by the All-Sky Monitor on the Rossi X-Ray
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Timing Explorer satellite, and its coordinates were promptly disseminated. An ASCA follow-up started 1.17 days after the burst as a Target-of-Opportunity Observation and detected an X-ray afterglow. The spectral data displayed a hump around ∼5 keV and an absorption column of 7.1 × 1021 cm-2. Taking into account the redshift z = 0.9578 found for the likely host galaxy of the associated radio flare, this hump structure is likely a recombination edge of iron in the vicinity of the source. The radiative recombination edge and continuum model can interpret the spectrum from highly ionized plasma in a nonequilibrium ionization state. The absorption could also be due to the medium presumably residing in the vicinity of the GRB.
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池本, 敏和 ; 高畠, 大知 ; 宮島, 昌克 ; 北浦, 勝 ; Miyajima, Masakatsu
概要:
金沢大学理工研究域地球社会基盤学系<br />構造系の同定に関する研究はこれまでにも種々行われている。しかしながら、いずれも非線形系に対しては多くの課題を残していると言える。そこで本研究では、ウェーブレット変換を用いて多自由度非線形系の動特
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性評価を試みた。計算機上で模擬的に生成した応答波形を用い、あらかじめ設定した動的定数の真値を同定した。対象とする構造物は5自由度、バイリニア型の復元力特性を有するモデルである。各種解析手法の同定精度との比較を行うことにより、ウェーブレット解析の非線形系の逆問題に対する有効性と同定精度を確認することができた。
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