著者
久保 幸夫 関目 茂 今村 俊夫 井本 利彦 上田 康弘 原田 昌幸
出版者
一般社団法人日本機械学会
雑誌
鉄道技術連合シンポジウム(J-Rail)講演論文集
巻号頁・発行日
vol.2006, no.13, pp.525-528, 2006-12-13

Electric brake system in 103 series has been used for over 40 years, but it has a lot of troubles. So we tried to solve the following two troubles. ・ the lack of the brake effect in a high-speed region with the old-type-control machine called CS20C. ・ the lapse of the brake effect in about 30km/h region with the new-type- microcomputer-control machine called CS20D.
著者
原田 昌幸
出版者
日本建築学会
雑誌
日本建築学会環境系論文集 (ISSN:13480685)
巻号頁・発行日
vol.82, no.734, pp.309-315, 2017 (Released:2017-04-30)
参考文献数
7

Currently, a restaurant or a cafeteria is often used not only as a place to have a meal but also as a place to work, take a rest, or just kill time. This change has become significantly enhanced by the development and wider availability of wireless networking services that facilitate all types of internet interaction from recreational use to work from just about any place. At many self-service restaurants, customers can not only select their own seats but also move one or more tables together to create more space for themselves. However, when customers are allowed this freedom, it is not uncommon that other customers are inconvenienced because a single customer has taken up many seats, especially during peak operating hours. The objectives of this study are to identify and clarify the characteristics of seat use and over-use behaviors based on customer behaviors in the food court of a shopping mall. The observation target for this research was a food court in a large shopping center in Nagoya, Japan where customers are free to choose their seats and connect tables as they like. Activities besides eating and drinking, such as studying are also tacitly permitted by the establishment. The observation time was from 10:00 a.m. to 2:00 p.m. and included both crowded and relatively empty time periods. The observation survey was conducted on 13 weekdays and 10 weekends, and more than 600 groups and more than 1, 400 customers were observed. The observed items included customer age categories and gender (estimated by the observer), the number of group members, arrival and departure times, tables and seating choices, and the activities in which they engaged. After observation, it was found that the customers ranged widely in terms of age, from young children (even less than 10-year olds) to senior citizens, with a large number of teenage customers too. There were many single customers on weekdays, whereas on weekends nearly all customers were in groups. The seats chosen most often on weekdays were the bench seats with the atrium to its back, with a slight difference in choosing bench or chair seating on the weekends. Also, looking at how customers tended to choose seats, they regarded the distance or nearness to other customers, which indicated that interpersonal distance had an effect on seat selection in this study. Regarding extra seat usage, during the week people in age groups from teenagers to 40-year olds used seats for longer than necessary, with a shift on the weekends to teenagers and people in their 20s, especially teenagers. People who were engaged in chatting were the predominant long-users, with people studying on weekends spending inordinate amounts of time taking up space in the food court observation area during the hours of the study. Taking up extra seats was observed much more on weekdays compared to weekends, and decreased significantly on crowded weekends. During the week men more than women took up more extra seats, which likely reflects a cultural norm regarding personal space. However, on both weekdays and weekends, single people and people 70 years old or older tended to take up extra seats for themselves. Interestingly, during the week, resting and reading seemed to require the most seat overuse, but studying took over the number one slot on weekends, followed by resting and reading. Again, the need for more interpersonal distance might be important to being comfortable resting and reading in such a public place.
著者
原田 昌幸 久野 覚 阿部 慎一 田中 秀夫
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.61, no.484, pp.89-95, 1996-06-30 (Released:2017-02-02)
被引用文献数
4 3

The purpose of this paper is to clarify the residents' consciousness to new subway service and its effects on residential environment. One residential area in Nagoya, which had new subway service, was selected, and two sampling surveys were conducted on it before and after its construction. The findings were as follows: More than 60% residents wanted new subway service and evaluated that the effects were desirable. However the further from the station there were subjects' houses, the less they wanted the new subway service and the lower they evaluated the effects, the effects on residential environment seemed to be small, but the degree of dissatisfaction for two items concerning car, 'parking on the road' and 'lack of parking lot', diminished.
著者
高 娟淑 久野 覚 原田 昌幸 中山 和美 飯村 龍
出版者
日本建築学会
雑誌
日本建築学会環境系論文集 (ISSN:13480685)
巻号頁・発行日
vol.74, no.638, pp.427-433, 2009-04-30 (Released:2009-11-24)
参考文献数
15
被引用文献数
2 1

In this study we examined ventilation in summer and solar insolation in winter as elements of the indoor environment, with the objective of analyzing the seasonal characteristics of thermal environment evaluation as well as identifying how particular characteristics of space affect the evaluation of the thermal environment. The results were as follows. We found that in summer, feelings of discomfort disappeared even at the high indoor temperature of 33°C when a breeze of at least 0.6 m/s was present. In winter, some subjects expressed a desire for the temperature to be raised while others desired it to be lowered, with a neutral temperature of 23-25°C. We found that subjects' degree of satisfaction to exposure to sunlight was “just right” at temperatures over 25°C, with dissatisfaction at the amount of sunshine being eliminated. During winter, by moving into and out of sunlit areas, subjects created a transient thermal environment in which they actively enjoyed temporary pleasant sensations even in high temperatures.
著者
久野 覚 高橋 晋也 古賀 一男 辻 敬一郎 原田 昌幸 齋藤 輝幸 岩田 利枝
出版者
名古屋大学
雑誌
基盤研究(B)
巻号頁・発行日
2000

快適性には、不快がないという消極的(negative)な快適性と、面白い・楽しい・気持ちいいという積極的(positive)な快適性の2種類がある。後者の快適性はプレザントネス(pleasantness)とも呼ばれている。現在の技術の下で、建築環境工学的諸問題の多くが解決され、ほぼ不快のない空間の達成がなされていると言っていい。しかし、このような状態では、暖かいとか涼しいといったプレザントネスはない。本研究の目的は、オフィス環境における温熱環境と照明視環境を中心にプレザントネス理論を応用した新たな環境調整法を検討し、その評価手法を確立することである。得られた成果は以下の通りである。1)温熱環境:被験者実験により、低湿度空調のプレザントネス効果および屋外から室内への移動(環境変化)に伴う生理心理反応とプレザントネス性の関係について明らかにした。さらに、パーソナルコントロールが可能な天井吹き出しユニットを用いた空調方式のプレザントネス効果について研究を行った。他の研究者によって行われている研究との違いは、アンビエントつまり周囲気温を中立温度ではなく不快側に設定する点である。2)視環境:・高輝度窓面をシミュレートする調光可能な光源装置を作成し、オフィス環境実験室でアクセプタブル・グレアの実験を行った。高輝度面に対する被験者の向き、机上面照度、高輝度面の立体角のの影響などについて明らかにした。また、視覚刺激生成器(VSG)を用いた色知覚の研究、光とヒトの生体リズムの研究を行った。3)以上の結果をもとに、オフィス環境におけるプレザントネスについて総括した。