著者

松田 憲 一川 誠 橘 佳奈

出版者

Japan Society of Kansei Engineering

雑誌

日本感性工学会論文誌 (ISSN:18845258)

巻号頁・発行日

vol.14, no.1, pp.215-222, 2015 (Released:2015-02-27)

参考文献数

27

被引用文献数

1 1

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We examined how changes in participants' heart rate affect their estimation of time when listening to music. We manipulated participants' heart rate using a cycling task on an exercise bike and by varying the tempo of music. The heart rates of 48 participants were measured before and after the pedaling task on the exercise bike. One week later, they listened to the music and estimated the temporal duration (60 seconds) under the non-manipulated condition (without exercise) and heart rate manipulated condition (with exercise). The results showed that the duration of the music (60 seconds) was underestimated after light exercise and overestimated after strenuous exercise. These results suggest that the acceleration of the internal time mechanism due to an increase in the heart rate affects the perceived duration of time with relation to music.

著者

日高 佑紀 森 大樹 吉 赫哲 川上 茂樹 一川 暢宏 有薗 幸司

出版者

大学等環境安全協議会

雑誌

環境と安全 (ISSN:18844375)

巻号頁・発行日

vol.5, no.1, pp.27-34, 2014-03-31 (Released:2014-05-16)

参考文献数

23

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パーソナルケア製品に頻用されている合成香料は、脂溶性が高く、生体内に高濃度で濃縮されることが憂慮される。しかし、これらの環境汚染状況や生体影響への情報は少ない。今回、合成香料のうち、多環ムスク化合物である6-acetyl-1,1,2,4,4,7-hexamethyltetraline (AHTN) 及び1,3,4,6,7,8-hexahydoro-4,6,6,7,8-hexam ethylcyclopenta-γ-2-benzopyran (HHCB) 並びにHHCB の代謝物HHCB-lactone、さらに[1,2,3,4,5,6,7,8- octahydro-2,3,8,8,-tetramethylnaphtalen-2yl]ethan-1-one (OTNE) の下水処理場における挙動とその動態につ いて調査した。その結果、下水処理施設の流入水においてAHTN 2.3 µg/L、HHCB 4.8 µg/L、HHCB-lactone 1.2 µg/L、OTNE 5.4 µg/Lが検出され、放流水では、AHTN 0.7 µg/L、HHCB 0.9 µg/L、HHCB-lactone 0.9 µg/L、 OTNE 0.7 µg/Lの濃度で検出された。下水汚泥においてはAHTN 2.1~9.3 mg/kg、HHCB 3.9~11.7 mg/kg、HHCB-lactone 1.8~3.4 mg/kg、OTNE 2.0~9.3 mg/kgの範囲で検出された。下水汚泥の各処理過程においては、AHTN、HHCB及びOTNEが活性汚泥中で濃度が低下するのに対し、HHCB-lactoneは下水処理過程を通して濃 度の大きな変動は見られなかった。さらに、下水処理場からの多環ムスク化合物の環境への排出量は、流入量の約60 %が放流水及び下水汚泥として環境中へ放出されること、下水処理過程での分解消失率は流入量の除去率は40 %弱であることが判明した。

著者

岡田 和也 一川 誠

出版者

日本視覚学会

雑誌

VISION (ISSN:09171142)

巻号頁・発行日

vol.33, no.3, pp.117-138, 2021-07-20 (Released:2021-07-27)

参考文献数

23

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In order to examine how the color of containers affect the taste intensities of drinks, participants evaluated the intensities of four basic tastes for various solutions, which was supplied with a colored container. Also, they evaluated subjective matching between colors and tastes. Analyses for the evaluated intensities of tastes showed that colors of container affect the tastes of drinks; bitterness was emphasized with black and green containers; sourness was emphasized with yellow container; saltiness was emphasized with pink container; sweetness reduced with black, blue, and green containers. We found that yellow container would emphasize the sourness for which participants evaluated as strongly matched with yellow while black, blue and green containers reduce the sweetness for which participants evaluated as negatively matched with those colors. These results suggest that the effects of color of container on taste intensities for inner drinks depend on the subjective matching between the color and taste.

著者

松田 憲 一川 誠 中嶋 優 興梠 盛剛

出版者

Japan Society of Kansei Engineering

雑誌

日本感性工学会論文誌 (ISSN:18845258)

巻号頁・発行日

vol.13, no.1, pp.63-73, 2014 (Released:2014-02-10)

参考文献数

21

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This study investigated the basis of a right-side dominance in aesthetic arrangement. In experiment 1, in order to examine the effect of attended position in pictures on aesthetic arrangement, we manipulated the positions of the fixation points, which attract observer's attention, and centroids of triangle arrangement for three objects. Participants rated preference, balance, beauty and harmony by the use of seven points scale for each of the pictures. We found that participants evaluated highly aesthetic in viewing the pictures whose arrangement centroids were near to the fixated position. In experiment 2, in order to examine the effect of participant's dominant hand on aesthetic arrangement we presented the objects which the participants are willing to manually manipulate, or the object which they should avoid to manually touch for right-handed or left-handed participants. We found that right-handed participants evaluated highly aesthetic in viewing the pictures whose arrangement centroid was at right side, but left-handed participant did not.

著者

松田 憲 一川 誠 矢倉 由果里

出版者

Japan Society of Kansei Engineering

雑誌

日本感性工学会論文誌 (ISSN:18845258)

巻号頁・発行日

vol.12, no.4, pp.493-498, 2013 (Released:2013-12-11)

参考文献数

30

被引用文献数

1

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This study investigated how the several factors of BGM (Background music) affected the time estimation . We composed 28 original music tunes with different tempo and notes. Twenty undergraduates estimated one minute by the use of the method of production while listening to a BGM. Results showed that participants underestimated the duration while listening to a tune with a slow tempo, whereas they overestimated while listening to the tunes with fast tempo. The participants overestimated the duration with the increment of the number of the notes per unit time and variety of a note. In addition, the music experiences influenced the auditory time estimation.

著者

一川 誠

出版者

日本時間学会

雑誌

時間学研究 (ISSN:18820093)

巻号頁・発行日

vol.7, pp.31-46, 2016 (Released:2017-05-01)

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時間に関する知覚過程は、一義的な解のない不良設定問題を解決する過程とみなすことができる。すなわち、時間知覚は、時間進行のペースや事象間の間隔についての確かな情報がないのに、0次元もしくは0.5次元的に得られる諸事象についての知覚情報を一次元的な進行する時間軸上に位置付ける過程と見なすことができる。普段の時間知覚において、何らかの巧妙な方略を用いることによって知覚系はこの不良設定問題に一応の解を与えていると考えられる。本研究では、知覚系がこの不良設定問題解決に用いている方略を理解するために、時間に関する錯視、錯覚の特性を整理した。その上で、進行する時間軸上への諸事象の位置付けという不良設定問題解決のため、知覚系が、処理促進による遅延の短縮や、顕著な情報による引き込み的処理などの方略を用いていることを示した。

著者

池田 朋矢 一川 誠

出版者

日本感性工学会

雑誌

日本感性工学会論文誌 (ISSN:18845258)

巻号頁・発行日

pp.TJSKE-D-22-00052, (Released:2023-04-13)

参考文献数

19

被引用文献数

1

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We have found that various cognitive biases would interfere with evacuation behavior during a disaster, and this have caused many casualties. In this study, we focused on the conformity bias, one of the cognitive biases, which is introduced by evacuation order sentences with information about other residences’ behavior, to facilitate evacuation behavior. In the experiment, we presented the evacuation order sentences, and pictures which depict the scene of disaster, or normal situation. Participants evaluated the degree of risk for the picture, and degree of necessity of evacuation from the scene. Our results demonstrated that the conformity bias would facilitate evacuation especially for the low-risk situation. In addition, we found that judgments of the need for evacuation can be predicted by the rating of the degree of danger, disaster experience, sense of crisis about disasters, and the other-personality-orientations of the participants.

著者

長田 和美 三輪 智也 長 篤志 一川 誠 水上 嘉樹 多田村 克己 三池 秀敏

出版者

日本認知科学会

雑誌

認知科学 (ISSN:13417924)

巻号頁・発行日

vol.15, no.1, pp.100-109, 2008 (Released:2009-10-30)

参考文献数

31

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Psychological researchers have pointed out that as the distance between a viewer and an object increases, the perceived size of the object becomes larger than the size predicted using the linear perspective. This phenomenon is called “size constancy”. The purposes of this study are to determine a magnification-rate function for rendering a graphic image to fit it with size and distance impressions obtained in real space observation at a given distance, and to assess the validity of the magnification-rate function for computer graphic images. In the first experiment, we investigated the perceived size of an object placed at different distances, ranging from 1 to 10 m (short distance conditions), and from 4 to 120 m (long distance conditions). We found that the Z-ratio function (Thouless, 1931) can predict the perceived size for an object under the short distance conditions; however, it failed to predict the perceived size under the long distance conditions. Therefore, we applied a logistic function to predict the perceived size of an object under both the short and long distance conditions. In the second experiment, we asked observers to rate the fit of the size and distance of a computer graphic image with the perceived size and distance of objects in a real space. The size and distance of objects in the graphic images were determined using the magnification-rate function in terms of the logistic function, or the conventional linear perspective. We found that the observers gave higher scores for the images generated using the magnification-rate function than those generated using the conventional linear perspective. These results indicate that the magnification-rate function obtained in this study is more useful than the linear perspective in rendering computer graphic images to fit the size and distance of objects in the images with the real space observation.

著者

松花 和貴 一川 誠

出版者

日本感性工学会

雑誌

日本感性工学会論文誌 (ISSN:18845258)

巻号頁・発行日

pp.TJSKE-D-21-00084, (Released:2022-07-06)

参考文献数

9

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The impression of sharpness of body movements (Kire in Japanese) is critical for aesthetical evaluation of body movements in dance, gymnastics, and martial arts’ Kata. However, the basis of impression formation of sharpness has not been empirically investigated to date. This study was designed to clarify how body movements’ speed affected impression formation regarding body movements’ sharpness. We also examined the effects of unexpectedly fast body movements on impressions of sharpness. Participants rated the impressions of sharpness, subjective speed, and unexpectedness of body movements when viewing movies of Karate Kata performance. Multiple regression analysis and path analysis revealed that subjective speed and unexpectedness affected impressions of sharpness of body movements and that subjective speed also affected them through unexpectedness. These results suggest that manipulating the speed and unexpectedness of movements effectively enhances impressions regarding the sharpness of body movements.

著者

一川 誠

出版者

日本時間学会

雑誌

時間学研究 (ISSN:18820093)

巻号頁・発行日

vol.12, pp.119-120, 2021-12-31 (Released:2022-07-01)

著者

金子 尚文 中山 智洋 一川 暢宏

出版者

公益社団法人 日本薬学会

雑誌

YAKUGAKU ZASSHI (ISSN:00316903)

巻号頁・発行日

vol.132, no.7, pp.849-853, 2012-07-01 (Released:2012-07-01)

参考文献数

8

被引用文献数

4 2

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Antimicrobial agents occasionally cause certain adverse effects, such as diarrhea and loose stool, by altering the composition of the intestinal flora. Antibiotic-resistant lactic acid bacteria are used to prevent these adverse effects. Although these bacteria are not resistant to several recently introduced antimicrobial agents, bacterial preparations are still sometimes prescribed concomitantly with these antimicrobial agents. In this study, we investigated whether the administration of the spore-forming butyric acid bacteria Clostridium butyricum improves the adverse clinical effects by preventing diarrhea. Inhibition of C. butyricum growth was observed with 17 of the 20 antimicrobial agents used. However, dilution of 11 of these 17 agents resulted in the regrowth of C. butyricum. These results suggest that C. butyricum may survive exposure to several antibiotic agents by forming spores. Further, a decrease in the antimicrobial agent concentration in the gastrointestinal tract permits the vegetative growth of C. butyricum, which functions as a probiotic.

著者

江頭 かの子 北原 隆志 柏木 香 樋口 則英 中嶋 幹郎 一川 暢宏 佐々木 均

出版者

公益社団法人 日本薬学会

雑誌

YAKUGAKU ZASSHI (ISSN:00316903)

巻号頁・発行日

vol.126, no.11, pp.1155-1161, 2006-11-01 (Released:2006-11-01)

参考文献数

13

被引用文献数

5 5

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Antimicrobial agents sometimes cause the adverse effects of diarrhea and loose stool. Antibiotic-resistant lactic acid bacteria are used to prevent these adverse effects. The bacteria are not resistant to several antimicrobial agents, although the bacterium preparations are sometimes prescribed the antimicrobial agents concomitantly. Therefore this paper reports that the minimal inhibitory concentration of three new antimicrobial agents against antibiotic-resistant lactic acid bacteria were determined using a microdilution method with cation-adjusted Mueller-Hinton broth. Furthermore, we investigated antimicrobial agents that are prescribed concomitantly with antibiotic-resistant lactic acid bacterium preparations or a clostridium butyricum preparation. The bacteria were susceptible to the three new antimicrobial agents. Approximately 50% of the bacterium preparations were prescribed alone, and 30% were prescribed concomitantly with antimicrobial agents that show antimicrobial activity against the bacteria. Consequently, we suggest that pharmacists need to confirm prescriptions and to provide more drug information on antibiotic-resistant lactic acid bacterium preparations.

著者

金子 寛彦 一川 誠

出版者

日本視覚学会

雑誌

VISION (ISSN:09171142)

巻号頁・発行日

vol.32, no.2, pp.47-49, 2020-04-20 (Released:2020-04-24)

参考文献数

9

著者

一川 誠

出版者

大阪市立大学

巻号頁・発行日

1994

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博士論文

著者

周 一川

出版者

慶應義塾大学

雑誌

史学 (ISSN:03869334)

巻号頁・発行日

vol.67, no.1, pp.161-186, 1997-09

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はじめに一 留学生は聴講生として対処された東京女高師二 留学生特設予科を設置した奈良女高師三 留学生特別措置がなかった東京高等糸学校おわりに

著者

樋口 則英 一川 暢宏 嶺 豊春 中嶋 幹郎 平井 正巳 佐々木 均

出版者

日本医療薬学会

雑誌

医療薬学 (ISSN:1346342X)

巻号頁・発行日

vol.30, no.6, pp.382-388, 2004-06-10

被引用文献数

1 2

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In recent years, computerized prescription order entry systems have played an increasingly important role in medical risk management as such systems have become more sophisticated. Though prescription order entry systems enable us to access huge amounts of information in drug information databases on drug interactions, adverse reactions and so forth, it is very difficult to manage such large amounts of information. Prescription order entry systems have a prescription checking function but the master maintenance must be done properly for it to work well. With this in mind, we developed an improved system using a commercially available program, PC-ORDERING 2000 (NEC Corp.), to make it easier to use the master maintenance screen of the order entry system. In order to investigate the resulting improvements we did the following : 1) measured the improvement in input efficiency, 2) evaluated the improvement in reference functions, 3) evaluated the improvement in file output functions and 4) made a comparison with the existing system. As a result, we found that the required maintenance time with the improved system was reduced to 66% and considered this to be very important to risk management since the prescription checking function in the order entry system had been enhanced.

著者

.*三村 遼平 一川 誠 若林 明雄

雑誌

日本心理学会第87回大会

巻号頁・発行日

2023-08-03

著者

北 徹朗 橋口 剛夫 一川 大輔 服部 由季夫 浅井 泰詞

出版者

公益財団法人 石本記念デサントスポーツ科学振興財団

雑誌

デサントスポーツ科学 (ISSN:02855739)

巻号頁・発行日

vol.42, pp.37-51, 2022-06-20 (Released:2023-04-09)

参考文献数

22

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本研究では実験室内で検証されることが多かった帽子の着帽効果について,暑熱環境下における実際の運動・スポーツ場面において検討し,熱中症対策に有用な帽子開発の基礎資料を提示することを目的とした.実験1では,39種類の色と素材の帽子について,帽子内温度が低く抑えられるものは何かを検討した.その結果,綿ポリ製の複数の色で最も温度上昇が抑えられた.実験2では,綿ポリ製素材を用いて2種類の形状の帽子を試作した.この帽子を用いて,4種目のスポーツ実施中の帽子内温湿度と被験者の深部体温の変化について観察した.その結果,広い通気口のある帽子では,湿度の上昇が低く抑えられた.他方,帽子全体に1センチ四方の小窓を開けた帽子では,広い通気口を設けるより,帽子内温度上昇率を15ポイント以上低く抑えられた.2つのタイプの帽子はそれぞれに優れている点が認められ,これらを組み合わせたスポーツキャップがあれば有用性が高いのではないかと示唆された.

著者

尾田 拓人 一川 誠

出版者

日本視覚学会

雑誌

VISION (ISSN:09171142)

巻号頁・発行日

vol.35, no.2, pp.43-55, 2023-04-20 (Released:2023-04-25)

参考文献数

38

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This study investigated how properties of precedent stimuli affect the perceived temporal duration for the following stimuli by the use of an experimental methodology similar to a previous study’s, which found cue recruitment in depth perception (Backus & Haijiang, 2007). Participants viewed movies (Experiment 1) or static images (Experiment 2), which lasted for various durations. Each participant conducted 250 training trials and 250 test trials in alternation. In the training trials, duration of the movies or static images was consistent with retinal location. In the test trials, participants judged whether the duration of the stimuli, which were presented at one of the alternative locations in random order, corresponds to the short or long criteria. Results of two experiments showed no sign of cue recruitment based on Bayesian rule concerning with the stimulus location, while perceived duration was modulated by the duration of the immediately precedent stimulus in a contrasting manner.

著者

一川芳員

出版者

〔丸屋甚八〕

雑誌

古登久爾婦里

巻号頁・発行日

1860