English summary of the 1 number of volume 50 publishing paper
第50巻1号掲載論文の英文要旨(2008)
Vol.50 No.1
Original Paper
Title : The Fostering of Self-Educability in Technology Education:
-The Orientation in Formation of Intention for Attainment Project-
Author : Akio UOZUMI
題目：技術科教育における自己教育力の育成に関する研究
著者：−課題意識の形成に関わる志向性について−
魚住 明生
キーワード：技術科教育，自己教育力，課題意識，志向性，意識調査
Abstract
In the present course of study for Junior High School, an aim is to instill in students a "zest for living" (ikiru-chikara) to foster in them the ability to learn and think for themselves. It has been shown in research in technology education on the fostering of such "self-educability" that an intention for attainment is a core factor, and that there are four elements at its base. Above all "goal and value awareness" is linked to formation and cohesion in intention for attainment and thus, we believe that it is through detailed considering of this awareness that self-educability in technology education will be effectively fostered.
In this study, based on attitudinal survey of students, we attempt to clarify the relationship between the intention for attainment and "goal and value awareness" in technology education. The results show that the awareness possesses nine attitudinal tendencies and these are linked with formation and cohesion of intention, giving us insight into the fostering of self-educability in technology education.
Key words : technology education, self-educability, intention for attainment, orientation, attitudinal survey
Title : Entrepreneurship- and Technology Education in the Context of the Information Society
Author : Matti Parikka and Arto Ojala
Title : Pedagogical Content Knowledge and Technology Teacher Education: Issues for Thought
Author : Michael A. De Miranda
General Paper
Title : Proposal of New Slicing Method and Trial Manufacture of Wire Tool
Author : Satoshi SAKAMOTO, Yasuo KONDO, Shiro OZAKI, Hiroshi USUKI, Kenji
YAMAGUCHI, Noboru MURAKAMI
題目：新しいスライシング方式の提案とワイヤ工具の試作
著者：坂本 智・近藤 康雄・尾崎 士郎・臼杵 年・山口 顕司・村上 昇
Abstract
Slicing by multi-wire saw can be roughly categorized into two types, a free abrasive grain system and a fixed abrasive grain system, both of which have good and bad points. Generally, a free abrasive grain system is suitable for precision slicing at low cost, but the slicing speed is slow and also a large amount of industrial waste occurs. On the other hand, while the fixed abrasive grain system slicing can be of high speed, the wire tool itself is very expensive.
As a result a free abrasive grain system is adopted when forming accuracy is necessary, and a fixed abrasive grain system is adopted when processing efficiency is necessary. In this study, a new, eco-friendly, half fixed abrasive grain system is proposed? one that falls between the free abrasive grain and the fixed abrasive grain systems. Also, the trial manufacture results of our proposed half fixed abrasive grain wire tool are reported.
Key words : multi-wire saw, slicing method, half fixed abrasive grain system, half fixed abrasive grain wire tool, hard and brittle materials
Title : The Mechanism of Bubble Sound Generation due to Water Drop Impact and its Application to Open-Type Suikinkutsu
Author : Yukio TOMITA, Shyuntaro GANBARA, Tatsuya SAITO
題目：水滴衝突による気泡音の発生機構とオープン型水琴窟への応用
著者：冨田 幸雄・腐原 俊太郎・斉藤 竜也
Abstract
A Suikinkutsu, a kind of water chime, is a traditional, musical, sound generating vessel which makes use of internal water drops as a sound source. Manufactured with closely guarded methods by gardener since the Edo period (1603-1867), it is often placed in Japanese gardens. The aim of this paper is to elucidate the mechanism of this water sound generation and by applying the experimental results to an open- type Suikinkutsu to contribute a variety of controls and designs to the sound source. It was well known that an impact at the water interface of drops with diameters of 4.7mm=< dD =< 6.5mm generates three underwater sounds patterns. However, in the case of larger drops with the diameter of more than 7mm, as employed in the present experiment, the initial underwater sound generated was found to be the principle sound source for Suikinkutsu. Understanding this, special attention was paid to the effects of drop water rate, water temperature and drop number on sound resonance within the Suikinkutsu vessel. Rresults show that a more powerful underwater sounds was emitted as water drop numbers increased. Very clear sounds were created when the drop water rate was 0.25ml/s and a low water temperature was maintained. This knowledge could be a good guideline for control and design in creating a variety of Suikinkutsu sounds.
Key words : water drop, air bubble, surface breakup, resonance, spectral analysis, Suikinkutsu