著者
森 勇樹 井上 隆 前 真之 佐藤 誠 八塚 春子
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.79, no.697, pp.261-270, 2014-03-30 (Released:2014-07-10)
参考文献数
15
被引用文献数
1

This report shows the actual situation of the spread and the use of mixing faucet and shower head in housing and the use of hot water, based on the result of web questionnaire. It was indicated that the single-lever mixing faucet recently became widespread about 90%, and that the ratio of using hot water in kitchen differed considerably between about 80% in winter and 20% in summer. It was also suggested that though they did not need hot water in summer and middle season, about a single-lever mixing faucet, there was high ratio of using the lever at the position where hot water was mixed.
著者
森 勇樹 井上 隆 前 真之 佐藤 誠 村上 雄飛
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.79, no.700, pp.515-523, 2014-06-30 (Released:2014-07-15)
参考文献数
13

The objective of this research is to grasp the effect of high insulation bathtub on heat-retention of hot water, by means of web questionnaire, laboratory experiment, and actual survey in houses. As a result, the followings were obtained; 1) It is indicated that high insulation bathtub is remarkably effective for restraining falling in temperature of hot water in bathtub, and that the insulation effect is not observed clearly when the lid of bathtub is opened even if it is the high insulation bathtub. 2) The insulation performance of bathroom also affects the decrease in water temperature as well as that of bathtub. As with insulation of the bathtub, it is important to insulate the bathroom. 3) It is suggested that to estimate water temperature drop by using bathtub heat loss coefficient would be possible.
著者
釜森 勇樹 川村 新 飯國 洋二
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. SP, 音声 (ISSN:09135685)
巻号頁・発行日
vol.109, no.57, pp.35-38, 2009-05-21

本論文では,ゼロ位相信号解析による広帯域雑音の除去について検討する.ゼロ位相信号とは,全周波数成分の位相をゼロに変換した信号であり,観測信号の振幅スペクトルの逆フーリエ変換として定義される.ゼロ位相信号へ変換することにより,振幅スペクトルの周波数軸方向の周期性を解析し利用することが可能となる.筆者らは,ゼロ位相信号解析の応用例として,白色雑音およびインパルス雑音に対する雑音除去法を提案してきた.本論文では,ゼロ位相信号解析によって,より一般的な広帯域雑音の除去が可能になることを示す.