巻号一覧
30 巻, 2 号
選択された号の論文の5件中1～5を表示しています
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稲葉 武彦1996 年 30 巻 2 号 p. 3-7
発行日: 1996年
公開日: 2010/08/25
ジャーナル フリーIn search of the relation between shape and performance, the effect of the pipe section on the heat transfer has been investigated. Longitudinal heat transfer between two fluid reservoirs of different temperatures is highly enhanced by fluid pulsation in capillary pipes which connect the reservoirs. When the pulsation frequency is sufficiently large, a boundary layer is formed along the pipe walls. The lateral heat transfer between the core and the boundary layer enhances the longitudinal heat transfer. It is interesting to investigate the effect of the shape of the pipe section which affects the boundary layer on the heat transfer. Regular polygons of the same area are considered as the pipe sections; triangle, square, pentagon and hexagon. The enhancement of heat transfer was more prominent with polygons of fewer edges under the same condition concerning the rest parameters which affected the heat transfer characteristics. A polygon of fewer edges has a longer wetted perimeter which causes a wider boundary layer region resulting in a more enhanced heat transfer. On the other hand, a longer wetted perimeter requires more power to maintain the fluid pulsation. Therefore, when the power was taken into consideration, a polygon with more edges was more power efficient to enhance the heat transfer and a circle was most efficient.抄録全体を表示PDF形式でダウンロード (497K) -
梶山 喜一郎1996 年 30 巻 2 号 p. 9-18
発行日: 1996年
公開日: 2010/08/25
ジャーナル フリーIs it effective to teach students by using image pictures? This study describes imagery differences between individual students. Students, beginners were asked to visualize the line problem of descriptive geometry taught at the class. After that they drew pictures showing how they“see” the problem. There were a lot of differences between each student's picture. The images that students drew often were different with the content of taught material. Students didn't follow teacher's instructions in visualizing solid and pictorial drawings. As their comprehension of taught material increased they would easier and correctly visualize it. The relation between imagery and linguistic knowledge is very important in teaching process. Teacher should be able to read student's imagery in according to assist creating it.抄録全体を表示PDF形式でダウンロード (1445K) -
近藤 邦雄, 伊藤 素子, 猪原 徹, 佐藤 尚, 島田 静雄1996 年 30 巻 2 号 p. 19-26
発行日: 1996年
公開日: 2010/08/25
ジャーナル フリーTextiles used in furniture in a living room as well as for clothes are designed with design pictures of various colors and patterns. A computer aided design system SERENADE was developed to have three major functions ; to build design pictures database, retrieval, and design pictures processing. This study proposes a reasonable user interface system for a designer at the pictures search on a graphics screen of a workstation. Several pairs of adjectives in antonym relation are chosen as retrieval keys such as‘warm-cool’, but the words are not directly used as keywords. An impression scale is proposed ranging from -3 to +3 so that the both terminals have the opposite human impressions corresponding to the adjective pair. Using two of such impression scales, a retrieval area is represented by a two dimensional domain where the pictures in database are plotted. A designer on his workstation can find some of sample pictures by pointing a location on the domain. Two methods of pointing procedures are discussed in the paper.抄録全体を表示PDF形式でダウンロード (2730K) -
1996 年 30 巻 2 号 p. 35-48
発行日: 1996年
公開日: 2010/08/25
ジャーナル フリーPDF形式でダウンロード (1719K) -
「図学教育の現状と将来 (3) ―隣接分野からの提言―」1996 年 30 巻 2 号 p. 49-57
発行日: 1996年
公開日: 2010/08/25
ジャーナル フリーPDF形式でダウンロード (6940K)
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