著者
奥山 圭一 加藤 純郎 山田 哲哉
出版者
宇宙航空研究開発機構
雑誌
宇宙航空研究開発機構研究開発報告 (ISSN:13491113)
巻号頁・発行日
vol.4, pp.55-75, 2005-03

REV was the first reentry capsule developed through pure domestic technology and successfully recovered. REV is thermally protected against the severe aerodynamic heating by carbon-phenolic ablator material. The present paper describes the feature of the heating test in the arc windtunnel and the ablator characteristics clarified during the research and development process of the REV heatshield. Because the heat flux anticipated on the stagnation surface is about 2 MW/m^2, the dominant surface recession mechanism is identified to be in the reaction control region. The thermochemical reaction data have been acquired through three arc-heater facilities with different enthalpy level for calibration and tuning of the ablation analysis code. The thermomechanical behavior of the ablator under the high heat flux environment such as delamination, or spallation also has been investigated for functional safety of the heatshield.
著者
伊波 靖 高良 富夫
出版者
情報処理学会
雑誌
情報処理学会論文誌 (ISSN:18827764)
巻号頁・発行日
vol.50, no.9, pp.2173-2181, 2009-09-15
被引用文献数
1

近年,不正なプログラムの感染および拡大方法の多様化と伝搬速度の高速化により,シグネチャによる不正プログラム対策ソフトウェアの限界が議論され,プログラムの振舞いに基づくビヘイビア型異常検知システムがさかんに研究されている.しかし,ビヘイビア型異常検知システムでは,高い検知率を得ることにともなうFalse Positiveの割合を減少させることが課題となっている.本論文では,Windowsにおいてシステムの資源に影響を与える危険なシステムコールに着目した異常検知手法を提案する.提案方式は,まず,OSが管理する重要な資源に影響を与えるクリティカルなシステムコールを,不正なプログラムの振舞いから定義したシステムコールと引数によるルールを用いて検知する.次に,それ以前に発行されたシステムコールの履歴からSupport Vector Machine(SVM)を用いて,検知したクリティカルなシステムコールが不正なプログラムによって発行された危険なシステムコールかどうかを識別することで異常を検知する.我々は,提案方式に基づくプロトタイプシステムを開発し,現実的な不正なプログラムおよび通常のプログラムを用いて実験を行った.実験では,提案方式の検知能力とFalse Positiveの割合について評価を行った.In recent years, infection and expansion method of malicious program are diversified, and the propagation speed has been rapid. The limit of the detection of security systems by signature has been indicated. Therefore, the behavior type anomaly detection system based on the behavior of the program has been actively researched. However, decreasing the ratio of false positive according to obtaining a high detection rate becomes a problem in the behavior type anomaly detection system. In this paper, we propose the anomaly detection method of combining behavior of program and detection rule to detect a dangerous system call that affects important resource of Windows system. The proposed method first detects a doubtful system call by the detection rule using system call and argument. Then, a dangerous system call is identified by using Support Vector Machine (SVM) from the history of the system call, and execution is intercepted. We performed an experiment by developing the prototype system based on the proposed method, and using realistic malicious program and usual program. Through the experiments, we have evaluated the detection rate of the proposed technique and the ratio of false positive.
著者
林 鎭代
出版者
関西国際大学
雑誌
研究紀要 (ISSN:13455311)
巻号頁・発行日
vol.13, pp.15-25, 2012-03-31

日本の昔話には,"人にあらざるもの"が いろいろと登場する。"天狗","河童","大蛇","鬼"等である。とりわけ,"鬼"は,恐ろしい存在として子どもに伝えられてきた。"鬼"の話には,同じ話が複数の地域にある場合と,その地域にのみある場合とがある。そうした昔話を教育現場で活用しようと,再編集したものが「読みがたり」である。「読みがたり」の話は,おおよそ基本に従って分類されているが,中には同じ話が異なって分類されている場合もある。これは,子どもに伝えたい教育的内容が異なったことから分類も異なったものと思われる。 "鬼"は,長きにわたり『避けるべきもの』『退治すべきもの』と子どもに伝えられてきた。しかし,近年のグローバル社会化を受けて『多様性を認めよう』『相手の立場を思いやろう』と"鬼"を通して伝えることも変化してきた。今後も,"鬼"は生き続ける限り変化していくであろう。
著者
岡本 源太
出版者
美学会
雑誌
美學 (ISSN:05200962)
巻号頁・発行日
vol.61, no.2, pp.13-24, 2010-12-31

Dans le De gli eroici furori (1585), Giordano Bruno (1548-1600) interprete la fable d'Acteon, mythe grec d'un chasseur metamorphose en cerf par Artemis (Diane) au bain et dechiquete par sa propre meute, comme destin de ceux qui cherchent a voir la verite divine. Pour cerner l'enjeu de cette interpretation, qui constitue certainement l'un des points forts du De gli eroici furori, le mieux est d'examiner comment Bruno fait face au petrarquisme a travers la variation de la figure d'Acteon. Car, a la Renaissance, la figure d'Acteon se diffusait comme allegorie de la melancolie amoureuse petrarquiste. Mon hypothese est que l'interpretation brunienne de la fable d'Acteon met en cause la conception petrarquiste de l'art comme activite melancolique. Selon Bruno, l'art n'est pas l'activite melancolique qui tente de perpetuer l'aimee, mais le processus des <<vicissitudes>> comme la metamorphose d'Acteon le suggere.
著者
佐藤 悦子 梅澤 絹子 小林 茂雄
出版者
社団法人日本家政学会
雑誌
日本家政学会誌 (ISSN:09135227)
巻号頁・発行日
vol.49, no.1, pp.59-68, 1998-01-15
参考文献数
8
被引用文献数
2

The purposes of this study are to investigate how the hemline widths of jeans affect the body movements of healthy persons when putting on and taking off jeans, and how they are related to wearing comfortability. In the experiment, four types of jeans with different hemline widths were used. The types were classified as middle-slim (S1), middle-straight (S2), roomy-straight (S3), and soft-middle-straight (S4). Subjects were 30 healthy female university students. They were classified into three groups by body size: large, medium and small. After videotaping the subjects putting on and taking off each type of jeans, each subject was required to answer a sensory evaluation sheet consisting of 21 items using the SD method. They were also asked which leg they mainly used in their daily activities. The results were as follows: 1) With regard to required time for putting on and taking off each type of jeans, significant differences were found among the types of hemline width. For putting on jeans, the longer the time required, the narrower the hemline width was. This was shown as follows: S1, S2&gtS3, S4. Particularly, the large body size group, showed remarkable differences. For taking off jeans, S1 showed significantly longer time, while the large body size group showed significantly longer time than other groups. 2) Concerning the sense of comfort in wearing, S2 and S3 types showed significant differences. Particularly, the small body size group gave the highest points to S2; the items, such as, "suberigayoi," "hadazawarinoyoi," and so on. 3) Regarding which leg is used to step into and out of jeans, it was confirmed that the different types of hemline widths did not affect which leg was used for the movement.
著者
札野 寛子
出版者
金沢工業大学
雑誌
KIT progress : 工学教育研究 (ISSN:13421662)
巻号頁・発行日
vol.20, pp.17-29, 2013-03

2012 年1 月に金沢工業高等専門学校が、初の試みとしてニュージーランドの協力協定校の学生を数名受け入れ、地元の精密機械企業で3 週間実地研修を行うインターンシッププログラムを実施した。そのプログラムに先立って、本学では日本語学習の初心者であった学生らを「研修生」として受け入れ、筆者らがのべ10 日間の事前日本語・日本文化指導を担当した。本論では、学生らと企業研修指導者へのアンケートやインタビュー回答、その他のデータをもとに、今回初めて実施した事前指導での学習内容が適切なものであったかを質的に検証する。そして、今回の事前指導ではどのような条件にもとづいて指導内容が計画されたか、あるいは企業研修での実情を踏まえると考慮すべきであったか、カリキュラム内容を左右する条件を吟味する。
著者
佐藤 昇
出版者
日本西洋古典学会
雑誌
西洋古典學研究 (ISSN:04479114)
巻号頁・発行日
vol.49, pp.98-107, 2001-03-05

From the late fifth century, those who participated regularly in politics as quasi-professional politicians mamly came from wealthy families This was because politicians received no remuneration for their 'active political activities', such as moving decrees and bringing accusations, and they could not engage in their own work themselves while they were engaged in these political activities Moreover they were required to perform liturgies and sometimes faced the danger of being prosecuted by their political rivals and being heavily fined In addition to these economic aspects, those who belonged to the upper class had an advantage with regard to political knowledge and information Only in exceptional cases did men from the middle or lower class have any chance to learn rhetorical skill, for getting a rhetorical education required considerable expense It also cost money to get a speech written by a logographer Other fields of political knowledge and information (e g news on foreign affairs, knowledge about finance) were also nearly concentrated in the hands of those who were constantly engaged in politics or had access to the necessary resources, that is, men from a rich family or from a family of influence traditionally Despite these circumstances, however, some sources show that not a few citizens from the middle or lower class did some active political activities Some acted regularly, others occasionally How could they become active in politics ? Many of them had some relations with the wealthy citizens or the political leaders They took part in political activities through what's called 'patronage' They could get economic and political support from their patrons And then they performed active political activities reciprocally for their patrons Besides they could get necessary information and knowledge about their political activities from their patrons without leaving their own work for a long time In some cases, the Athenian citizens recognized them as politicians on the basis of their patron's influence Thus it was patronage that enabled and prompted citizens from the middle or lower class to be active, even if occasionally, in the politics of the Athenian democracy, where economic constraints and the concentration of political knowledge and information ensured that quasi-professional politicians played central roles According to M H Hansen, in addition to the political leaders, there was an important group of politically minded citizens who were active, even to the extent of proposing decrees, but not regularly And these citizens amounted to some 300-600 at any given meeting of the ecclesia If the circumstances under which the patronage was employed are taken into account, it is possible to guess that most of the group might be consisted of citizens from the middle or lower class Then much more citizens from the middle or lower class might be engaged in the active political activities, if only occasionally, through patronage than usually believed
著者
真島 顕子 石田 毅 野島 伸仁 椎名 正明 ルイス・A・マルケス
出版者
サレジオ工業高等専門学校
雑誌
サレジオ工業高等専門学校研究紀要 (ISSN:18812538)
巻号頁・発行日
vol.36, pp.63-68, 2010

English is recognized as the global language, while other foreign languages are usually referred to as "the second foreign languages" and tend to be considered less important in higher education, especially in technical colleges, in Japan. Some technical colleges minimize the number of foreign language classes and some haveeven closed them down completely. This trend is being encouraged by the recent emphasis on English education and the difficulties in employing full-time or even part-time teachers for such classes. However, our research has found that students wish to have a chance to learn the second foreign languages at school.Therefore, we strongly believe in the importance of learning foreign languages along with English and retaining them in the curriculums. This can help us on the road to true international understanding.
著者
荒川 尚久 泉 知論
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. AI, 人工知能と知識処理 (ISSN:09135685)
巻号頁・発行日
vol.112, no.70, pp.131-136, 2012-05-22
参考文献数
13

大容量化するFPGAの活用には設計生産性の向上が不可欠であり、抽象度の高い言語と高位合成系の活用が求められる。高位合成のための最適化アルゴリズムや設計支援ツールは実用段階に入ってきているが、それらを効果的に活用し品質の良い回路を得るにはノウハウが必要である。我々は、高位合成系を活用しつつ設計者の工夫や英知を効果的に反映させる設計方法論、記述法の確立を目指している。本稿では、一般にはハードウェア化が難しいとされるゲーム思考アルゴリズムを対象として、高位合成系を用いた設計試行を行う。ボードゲームConnect6を対象に、ソフトウェアプログラムの作成から、単純移植、記述の工夫による最適化を行う。記述の工夫により、回路規模が53%削減できた。