著者
金 相賢 盛川 浩志 渡邊 克己 河合 隆史
出版者
特定非営利活動法人 日本バーチャルリアリティ学会
雑誌
日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)
巻号頁・発行日
vol.21, no.4, pp.675-683, 2016 (Released:2017-02-01)
参考文献数
22

In this study, the effects on concentration of attention, cognitive activity such as memory was examined in consideration of humans' cognitive characteristic over 3D images about the partial 3D image which changed a part of picture. The experiment of concentration of attention was carried out by measuring reaction time in visual search task using a simple visual target and eye fixation while viewing natural color image. On the other hand, the experiment of cognitive effect such as memory, the searching time until the changes are recognized were computed using the change blindness subject. That needs the cognitive activity of comparing by memorizing a picture temporarily while turning a look for detection of change. As a result, it was suggested by the partial 3D image that an object has the cognitive effect which is easy to go up to consciousness and to remain in memory.
著者
宮澤 修平 岡野 和夫 下村 直之 川原 哲也 浅野 修 吉村 寛幸 河合 隆利 左右田 茂 吉田 豊 里 忠 町田 善正 山津 功
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.40, no.2, pp.521-523, 1992-02-25 (Released:2008-03-31)
参考文献数
14
被引用文献数
2 4

Optically active platelet-activating factor (PAF) receptor antagonist, (+)-6-(2-chlorophenyl)-3-cyclopropanecarbonyl-8, 11-dimethyl-2, 3, 4, 5-tetrahydro-8H-pyrido[4', 3' : 4, 5]thieno[3, 2-f][1, 2, 4]triazolo[4, 5-a][1, 4]diazepine (E6123), was synthesized on large-scale by optical resolution using (+)-dibenzoyl-D-tartaric acid. An X-ray crystallographic analysis clearly indicated that the absolute configuration of the synthesized E6123 was S.
著者
河合 隆志 牛田 享宏 井上 真輔 池本 竜則 新井 健一 西原 真理
出版者
日本疼痛学会
雑誌
PAIN RESEARCH (ISSN:09158588)
巻号頁・発行日
vol.29, no.3, pp.181-189, 2014-08-30 (Released:2014-09-16)
参考文献数
20

Many patients have neck and back pain, and their standing posture (spinal alignment) is sometimes considered to be one of the factors that contributes to such pain. Thus, it would be useful to evaluate spinal loads in that posture. A method to evaluate individual spinal loads using link segment models made from body mass distributions using DXA (dual–energy X–ray absorptiometry) was developed.   An element was defined as 1.30 × 1.22 cm, and a detailed body mass distribution consisting of 7473 elements was constructed using DXA equipment (QDR4500). The subjects' bodies were divided into cervicofacial (vertex–C7 ⁄ T1), thoracic (C7 ⁄ T1 – T12 ⁄ L1), and lumbar (T12 ⁄ L1 – L4 ⁄ 5) segments. Each mass, M1, M2, and M3, and the center of the masses were calculated. With these parameters and DXA images, each torque, TC7/T1, TT12/L1, and TL4/5, was calculated from the following formulas: TC7/T1 = M1gr1cosθ1, TT12/L1 = M1g (l2cosθ2 + r1cosθ1) + M2gr2cosθ2, and TL4/5 = M1g (l3cosθ3 + l2cosθ2 + r1cosθ1) + M2g (l3cosθ3 + r2cosθ2) + M3gr3cosθ3 (r1, r2, and r3: lengths from the rotation center to each center of mass; l2 and l3: lengths of C7 ⁄ T1 – T12 ⁄ L1 and T12 ⁄ L1 – L4 ⁄ 5; θ1, θ2, and θ3: angles formed between a horizontal line and r1, r2, and r3). In order to reproduce the standing posture on DXA, the standing side was formed by a vacuum cushion for operative position in advance.   The parameters from DXA in the lateral view were as follows. In case 1 (38–year–old man, healthy, 164.0 cm and 55.5 kg), they were M1 = 4.50, M2 = 13.24, M3 = 6.92 kg, TC7/T1 = –0.28, TT12/L1 = –3.80, and TL4/5 = –6.42 Nm (facing right, clockwise: positive). In case 2 (76–year–old man, lumbar spondylosis, 156.9 cm and 59.6 kg), they were M1 = 4.83, M2 = 14.27, M3 = 10.34 kg, TC7/T1 = –1.69, TT12/L1 = –16.1, and TL4/5 = –44.3 Nm. In case 3 (71–year–old woman, lumbar spondylosis, scoliosis, 147.2 cm and 49.0 kg), they were M1 = 4.63, M2 = 11.42, M3 = 5.36 kg, TC7/T1 = –2.53, TT12/L1 = –16.0, and TL4/5 = –27.0 Nm. Torques at L4/5 were 6.9 and 4.2 times greater in cases 2 and 3 than in case 1. Total masses calculated from DXA were 54.5, 59.0, and 47.6 kg, and errors between these and actual weights were –1.8, –1.0, and –2.9%, respectively.   A method for evaluating spinal loads as torques was developed using DXA. In the future, it will be possible to use this method to evaluate factors such as pain and the effect of rehabilitation. The relationships between torques and various scales (such as pain, depression, ADL, and QOL) need to be examined, taking into account age, sex, muscular strength, etc.
著者
河田 敬義 河合 隆裕
出版者
一般社団法人 日本数学会
雑誌
数学 (ISSN:0039470X)
巻号頁・発行日
vol.25, no.1, pp.68-70, 1973-01-30 (Released:2008-12-25)
参考文献数
37
著者
河合 隆裕 竹井 義次 小池 達也 青木 貴史 神本 晋吾
出版者
京都大学
雑誌
基盤研究(B)
巻号頁・発行日
2008

1. 高階パンルヴェ方程式 (P_J)_m(J=I, II, IV; m = 1, 2, …) に対し、その 1 型変わり点の近くにおいて、そのインスタントン型解は 2 階 I 型パンルヴェ方程式の解に変換できることを示した。議論は高階パンルヴェ方程式の背後に在るシュレーディンガー方程式の WKB 解析的・半大域的変換論に基く。2. その WKB 解析的標準型がマシュー方程式となる一連の方程式の変換論を構築し、その WKB解の解析的構造を超局所解析的手法により明らかにした。
著者
鈴木 雅雄 綿引 元 河合 隆 百々 修司 山本 英明 竹内 鉄郎 樋口 哲也 白石 勉 日置 弥之 近藤 真弘 都宮 伸 木村 恵理子 神谷 明江 小川 博 家本 陽一 下川 邦泰
出版者
一般社団法人日本消化器外科学会
雑誌
日本消化器外科学会雑誌 (ISSN:03869768)
巻号頁・発行日
vol.32, no.8, pp.2191-2192, 1999-08-01

従来より食道表在癌のX線学的深達度指標として, 病変正面像での陰影斑の濃度, 病巣内隆起の大きさ, 辺縁隆起の程度の3因子と各々の組み合わせ, 病変側面像で壁不整像, 陰影欠損像, 伸展障害の程度の3因子と組み合わせにより深達度推定を行い, 高い精度を得ている。表在癌m_1 35, m_2 20, m_3 22, sm_1 6で再検討を行った。陥凹型では陰影斑の濃度と顆粒像の組み合わせが最も有用であり, m_3の顆粒像は5mm以下であった。不整な顆粒像では4mmでもsm_1があった。隆起はm2bから欠損像を呈し, 腫瘍量を表している。伸展障害はsm以深の線維化の程度を反映した。