著者
大野 隆造 近藤 美紀
出版者
日本建築学会
雑誌
日本建築学会計画系論文集 (ISSN:13404210)
巻号頁・発行日
vol.59, no.461, pp.123-129, 1994
被引用文献数
10 5

The Japanese circuit-style gardens have long been appreciated for their sequential scenes of beautiful landscapes. The aesthetic experience, however, has rarely been analyzed in a scientific manner. The present study attempts to analyze the sequential experience by measuring sensory stimulus information from the environment. A set of personal computer programs was developed and applied to the environmental data of three famous circuit-style gardens in order to measure the following three aspects of sensory stimulus information: (l) ambient visual information; (2) focal visual information; and (3) such non-visual information as tactile and kinesthetic information. In this paper, part 1 of the study, the profile of each aspect was obtained by assessing consecutive points every 0.5m (one step of a pedestrian) apart along the garden path. In the future study, changes in the profiles of sensory stimulus information can be used to examine the sequential experience as people moved through the garden.
著者
大塚 秀幸 V.A. Dinh 大野 隆央 津﨑 兼彰 土谷 浩一 佐原 亮二 北澤 英明 中村 照美
出版者
一般社団法人 日本鉄鋼協会
雑誌
鉄と鋼 (ISSN:00211575)
巻号頁・発行日
vol.100, no.10, pp.1329-1338, 2014 (Released:2014-09-30)
参考文献数
22
被引用文献数
10

The effects of carbon content on tetragonality and magnetic moment of bcc iron have been evaluated by first-principles calculation. Three kinds of supercells, Fe54C1, Fe54C2 and Fe128C1 (which correspond to Fe-0.40C, Fe-0.79 and Fe-0.17C mass%, respectively) are used for the calculation of tetragonality and magnetic moment of Fe-C system. Main results obtained are as follows. (1) The total energy and mechanical energy of the Fe-C system with carbon atom at the octahedral sites are smaller than those with carbon atom at the tetragonal sites. The carbon atom at octahedral site produces fairly large expansion in one direction. (2) Tetragonality of Fe-C system obtained by first-principles calculation increases linearly with increasing carbon content and agrees well with experimental results. The average magnetic moment of an Fe atom increases with increasing carbon content. (3) The magnetic moment of an Fe atom at the nearest neighbor of carbon atom is lower than that of pure iron and increases with increasing distance between the iron and carbon atoms. The projected density of states shows a hybridization with main contributions from Fe d and C p states which leads to the above mentioned decrease of the magnetic moment of an Fe atom. (4) In Fe54C2, tetragonality and magnetic moment of iron atom change with the distance between two carbon atoms. The value of tetragonality is either 0.981, 1.036 or 1.090. When the dumbbell structure which consists of the first carbon atom and its two nearest neighbor iron atoms is perpendicular to the second dumbbell structure which consists of the second carbon atom and its two nearest neighbor iron atoms, the tetragonality is 0.981 and does not agree with experimental value. The mechanical energy is relatively large. On the other hand, when the first dumbbell structure is parallel to the second dumbbell structure, the tetragonality is 1.036 which agrees well with experimental data. The mechanical energy is relatively small. When straight C-Fe-C pair is formed, tetragonality is 1.090. (5) In Fe54C2, formation enthalpy is relatively low when the calculated tetragonality is 1.036, and the existence probability under the assumption of Boltzmann distribution is high. In other cases, the existence probability is nearly zero. (6) The average magnetic moment of an Fe atom is proportional to volume, but not in a clear relation with tetragonality. It is considered that the increase of magnetic moment of an Fe atom by the addition of carbon atom is mainly due to the magneto-volume effect but not due to the tetragonality effect.
著者
川崎 拓郎 村尾 修 諫川 輝之 大野 隆造
出版者
公益社団法人 日本地震工学会
雑誌
日本地震工学会論文集 (ISSN:18846246)
巻号頁・発行日
vol.12, no.4, pp.4_263-4_277, 2012 (Released:2012-09-28)
参考文献数
12
被引用文献数
3

本研究では、沿岸部住民の津波避難行動に着目し、2008年と2011年の2度にわたって千葉県御宿町を対象とした避難行動に関するアンケート調査を実施した。そして、想定津波および東日本大震災直後の避難経路についての空間的な比較分析を行い、(1)標高、(2)海岸線からの距離、(3)想定浸水域内の残存者数の観点から考察した。その結果、実際の避難行動における多様性、自動車による避難行動の多さ、避難距離の長さ、浸水域に留まる事例の多さ、などが明らかになった。
著者
青木 宏文 大野 隆造 山口 孝夫
出版者
日本建築学会
雑誌
日本建築学会計画系論文集 (ISSN:13404210)
巻号頁・発行日
vol.68, no.563, pp.85-92, 2003
被引用文献数
2

In Part 1, a simulation system was developed to examine human spatial orientation in a virtual weightless state. By conducting experiments in several routes of connected modules, we found some relevant variables for spatial cognition errors. Part 2 clarifies the causes of spatial cognition errors by the similar experiments using more complicated routes. The results showed the errors were able to be explained by two causes. One cause was that subjects did not recognize the rotation of the frame of reference, especially more often when they turned in pitch direction rather than in yaw. The other cause was that subjects were incorrect in the place, the direction, and the sequence of turns.
著者
大野 隆造 青木 宏文 山口 孝夫
出版者
日本建築学会
雑誌
日本建築学会計画系論文集 (ISSN:13404210)
巻号頁・発行日
vol.67, no.558, pp.71-77, 2002
被引用文献数
3 3

In a virtual weightless environment, pointing and modeling tasks were conducted to examine subjects'orientational skills. Subjects who wore a head-mounted display in a reclining chair moved from one end to the other end in several routes that were made by three or four modules that were connected by cubical modules, and pointed to the start point and made the experienced route by a scale model. Analyses of the results show the ability of spatial orientation varies with such variables as the number of bends, the number of embedding planes and the number of planes with respect to the body posture. Subjects who miss the tasks have a tendency not to take the change of the direction of their body axes into account.
著者
永塚 規衣 大野 隆司 大川 祐輔 河村 フジ子 長尾 慶子
出版者
一般社団法人日本調理科学会
雑誌
日本調理科学会誌 (ISSN:13411535)
巻号頁・発行日
vol.36, no.4, pp.364-370, 2003-11-20
参考文献数
17
被引用文献数
2

ゼラチン溶液に糖及びアルコールを添加した場合のゲル化機構を動粘度モニタリングシステム,旋光度,動的粘弾性,レオメータの測定により検討した結果を以下にまとめた。1)糖及びアルコールの添加はアルカリ処理低温抽出ゼラチンのゾル-ゲル変換に影響を及ぼした。糖添加によりゲル化開始時間は短く,ゲル化が完了した時間は長く,ゲル化温度は高くなった。一方,エタノール20%添加ではゲル化開始時間,ゲル化時間は長く,ゲル化温度を低下させた。2)本試料ゼラチンのゲル化では,粘性率の増加から始まり,続いて弾性率の増加が起こり,最後に旋光度という順で変化が起きていた。3)ソルビトール添加はゼラチン分子のへリックス形成に有効であり,弾性率も上昇し,硬いゲルを形成したが,高濃度のエタノール添加はゼラチンのヘリックス形成に抑制的に働き,弾性率も低下し、破断波形において延性を増した。
著者
大野 隆造
出版者
東京工業大学
雑誌
基盤研究(C)
巻号頁・発行日
2008

没入型VRシステムを用いて、火災発生時の異変察知から避難意思決定に至るまでの行動に関する実験を行った結果、火災放送は、単独では避難意思決定を促すには十分でなく、非常ベルと発報放送という事前情報があることで意思決定が促進されること、また非常ベルや火災放送の繰り返しが、避難意思決定および確認行動を早める効果があること、さらに建築の空間構成として、廊下側に窓のない居室や遮音性の高い居室では、避難行動が遅れることが明らかとなった。