※一部利用できない機能があります
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図書 |
図書
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小寺武久著
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| 2.
図書 |
図書
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溝口正人[著]
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図書 |
図書
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平田昌司主編 ; 溝口正人 [ほか] 著
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その他 |
その他
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溝口, 正人 ; Mizoguchi, Masato
概要:
取得学位：博士(工学)，学位授与番号：博甲第735号，学位授与年月日：平成17年3月22日
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論文 |
論文
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溝口, 正人 ; 米山, 猛
概要:
[特集-解説記事]
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| 6.
論文 |
論文
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香川, 博之 ; 高橋, 昌也 ; 佐藤, 一孝 ; 溝口, 正人 ; 米山, 猛 ; 北川, 雄二郎 ; 那須, 英彰 ; 武田, 憲明
概要:
In this study, a new technique has been proposed to quantitatively evaluate the hitting performance of baseball bats wit
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hout affecting their initial pitching velocity; this technique is based on an earlier evaluation system developed to measure the same. The experiments conducted in this study were used to calculate two parameters, namely “hitting efficiency index” and “hitting velocity index,” to demonstrate the relation between the pitching and hitting velocity of the baseball bat and evaluate the bat's hitting performance. To evaluate the hitting performance, this method required fewer experiments than the previously developed method. Furthermore, on the basis of the calculations of these two parameters, the swinging ability of a baseball bat was found to be corresponded to the bat's moment of inertia. Using the parameters proposed in this method along with the pitching velocity, a player can estimate the hitting velocity of the bat when used in a match. Therefore, this method, when adopted, can help players choose baseball bats depending on their individual playing abilities.<br />Embargo Period 12 months
続きを見る
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図書 |
図書
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[フレッチャー原著] ; ダン・クリュックシャンク編 ; 片木篤 [ほか] 訳
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