著者
久野 靖 大木 敦雄 角田 博保 粕川 正充 Yasushi Kuno Atsuo Ohki Hiroyasu Kakuda Masaatsu Kasukawa 筑波大学大学院経営システム科学専攻 筑波大学大学院経営システム科学専攻 電気通信大学情報工学科 お茶の水女子大学情報科学科 Graduate School of Systems Management The University of Tsukuba Tokyo Graduate School of Systems Management The University of Tsukuba Tokyo Department of Computer Science University of Electro-Communications Department of Information Science Ochanomizu University
出版者
日本ソフトウェア科学会
雑誌
コンピュータソフトウェア (ISSN:02896540)
巻号頁・発行日
vol.13, no.3, pp.230-240, 1996-05-15
参考文献数
6
被引用文献数
4

図的ユーザインタフェースの一種として,アイコンで様々な対象を表現し操作するWIMP[1]インタフェースがある.WIMPインタフェースでアイコンに対する操作を指示するやり方(操作選択方式)としてメニュー,ドラグ&ドロップ,キー操作などがあるが,これらの間には,操作時間が短いものは柔軟性や分かりやすさに欠け,柔軟で分かりやすいものは操作時間が長いというトレードオフがある.筆者らはドラグ&ドロップの改良版として「アイコン投げ」(ドラグの途中でマウスボタンを離してもアイコンがこれまでの速度と方向で目的地に向かって移動し続ける方式)に注目し,その操作時間について実験と検討を行った.実験の結果,「アイコン投げ」インタフェースはメニュー,パレット,ドラグ&ドロップなどのマウスによる選択方法より有意に高速であり,誤り率も他の方法と比べて遜色ないため,図的インタフェースの基本操作として有望である.
著者
飯田 浩之 Hiroyuki IIDA 筑波大学 The University of Tsukuba
出版者
東洋館出版社
雑誌
教育社会学研究 = The journal of educational sociology (ISSN:03873145)
巻号頁・発行日
vol.80, pp.41-60, 2007-05-31

In Japan, disparities in high schools showed an increasing tendency until the end of the 1970s. Since that time, attempts have been made to analyze and reduce these disparities, both in the field of sociology of education and educational reforms. This paper aims to re-examine the challenges in both fields and to elucidate their positive outcomes and limitations, and in addition, to point out a new perspective for future challenges in this area. Academically, the study of disparities began with the application of the concept of "tracking." At the beginning, many types of evils caused by disparities were problematized, and the concept of "tracking" was adopted to document the situation. The concept of "tracking" was compatible with functionalism, which was the main theoretical stream in the sociology of education at that time. The concept of "tracking" was originally used in studies of high schools in the United States to reveal the fact that there were invisible mechanisms for the selection of students in open curriculum systems. However, in Japan, the concept was used to report the fact that there were great differences in the inner processes of schools and subjective aspects of students based on school disparities. In other words, the concept was used to point out the effects of the disparities. As a result, the study of disparities has been developed as the study of "tracking effects." It can be said that studies of the tracking effect could have contributed to investigations of the inner processes of schools and subjective aspects of students. But instead, they took a macro perspective from the studies of school disparities. As a result, disparities were not examined in relation to social structures. Politically, there are two ways to reduce disparities in schools. One is to control the level of achievement of new students in order to prevent the emergence of differences among schools (input control). The other is to control educational activities in the schools to ensure that tracking effects do not take place in each school (through-put control). Since the late 1970s, input controls have been carried out through reforms of the entrance examination system of high schools and improvements of the guidance system of junior high schools. However, these controls were too indirect to reduce school disparities. In other words, whether they could reduce the disparities or not depended on their ability to change students' standards for school choice, which were indeed subjective. Through-put controls have been carried out as reforms of high schools. High school reforms after the 1980s were generally seen as an attempt to weaken classifications and frames of education. Logically, it seemed that these efforts led to a limitation of tracking effects in each school and to a reduction in school disparities as a whole. However, these attempts were not effective as they lacked a grand design and were done separately for each school. Challenges to the school disparities in both fields mentioned above seems to be homologous. They share the fact that they look at the disparities from a narrow perspective, only in relation to inner processes of each school or the subjective aspect of students. School disparities are social disparities. For example, they involve class differences among the enrolled students, and are related to regional differences. Consequently, in order to reduce school disparities, it is necessary to see them in their social context. The conclusion of this paper, by introducing recent challenges to school disparities, proposes this new perspective.