著者
李 可人 井筒 雅之
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. OPE, 光エレクトロニクス
巻号頁・発行日
vol.97, no.539, pp.55-60, 1998-02-12
参考文献数
11

本論文では、ミリ波帯で動作する新しい光検波器を提案した。新しい光検波器は、帯域動作の利点をフルに生かし、検波器の出力を最大になるように、進行波型の概念を用いながら、多段共振器と反射スタブを設けた。本論文では、共振器と反射スタブをそれぞれショットとオープンの四分の一波長の共平面導波路(CPW)スタブを用いた。光導波路を伝播する光波とフォットダイオードによって生じた共平面導波路を伝播するミリ波との間の速度整合はS字型蛇行ミリ波伝送線路によって実現した。
著者
鶴見 康昭 中川 稔章 西垣 英一 西脇 眞二 小島 芳生 菊地 昇
出版者
一般社団法人日本機械学会
雑誌
設計工学・システム部門講演会講演論文集 (ISSN:13480286)
巻号頁・発行日
vol.2001, no.11, pp.279-281, 2001-11-01

An integrated system with both Computer Aided Design (CAD) and Computer Aided Engineering (CAE) has been developed. Most of these systems mainly focus on the effectiveness of constructing Finite Element (FE) model In these systems, a FE model is automatically constructed and calculation is automatically carried out. But a good design candidate cannot be obtained since some analysis tools for finding out it effectively are not included. In this paper, firstly some problems in current CAE systems are made clear. Secondly, in order to overcome these problems, two new analyses, that are FOA( First Order Analysis) in a concept design phase and a optimization tool based on a reduction technique in detailed design phase, are presented. Finally, in order to perform these analyses in a integrated system, a few concepts of necessary technique are proposed.
著者
菊地 一夫 上杉 志朗
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. SITE, 技術と社会・倫理 (ISSN:09135685)
巻号頁・発行日
vol.103, no.224, pp.23-28, 2003-07-18
被引用文献数
1

近年、中心市街地の商店街の衰退し、地域商業集積間の競争では特定地域のイメージ戦略が重要になるといえる。本稿は松山市の商店街イメージ調査から情報発信の基礎となる因子を抽出し、地域情報化の観点で考察する。
著者
森部 敦 毛利 公美 森井 昌克
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. OIS, オフィスインフォメーションシステム (ISSN:09135685)
巻号頁・発行日
vol.105, no.283, pp.11-16, 2005-09-08
被引用文献数
3

電話による音声理解による自動応答システムやパソコンによる文字理解に基づく応答システムがある.他方, 以前から会話を成立させるシステムとして人工無能がある.人工無能は文字通り, 主として会話の内容に関しての目的や意図もなく, 会話としての成立だけを目的としている.本研究では, 人工無能において, より自然に会話を成立させるための手法の開発と, その応用として自動応答システム, 特にマーケティングとしての情報提供および情報収集システムへの可能性について考察する.
著者
菅野 正彦
出版者
愛知学泉大学
雑誌
愛知学泉大学コミュニティ政策学部紀要 (ISSN:13447939)
巻号頁・発行日
vol.6, pp.83-97, 2003-12

ボエティウスはローマの貴族の家庭に生まれたが,陰謀を働いた廉でパヴィアの牢獄に幽閉された。処刑されるまでの間に牢獄の中で書いたのが,この有名な『哲学の慰め』である。「思いを深く真理探究に致す者は/また岐路に迷うことを欲しない者は/心眼の光りを自己自らの中に向けよ」(III. m. 11. 1-3)と述べているように,獄中で筆を進める彼の精神力と記憶力の強靱さに今更ながら驚かされる。学問を中途で放棄するな,真摯な情熱を抱けと後世の人々を励まし,知の追求と神の愛こそ人間の真の幸福の源泉と明言する。神の叡知,即ち神の摂理(Providence)を解するために,可能な限り頂上に登らなければならない。行動を引き起こすのは,意思と力である。
著者
水原 隆道 中西 恒夫 福田 晃
出版者
一般社団法人情報処理学会
雑誌
情報処理学会研究報告計算機アーキテクチャ(ARC) (ISSN:09196072)
巻号頁・発行日
vol.2001, no.116, pp.79-64, 2001-11-28
被引用文献数
2

ゲノム情報学分野における相同性検索や立体構造予測などのアプリケーションは,巨大なゲノム配列データに対して解析を行うため,特に解析精度を求める場合には、高速な計算機が要求される.本稿では,このようなゲノム情報学アプリケーションに特化した専用プロセッサを設計し,ハードウェアによるその高速処理を図る.同専用プロセッサは,ゲノム情報学アプリケーションによく用いられる動的計画法をデータフロー並列処理により高速化する.ソフトウェアシミュレーションによる予備評価の結果,PentiumIII 1GHz と比べて,約13.5 倍の処理速度が得られることを確認した.Genome informatics applications such as homology search or protein structure prediction, which deal with a huge amount of DNA or amino acid sequences, requires extremely high performance computers especially for accurate analysis. This paper describes design of an application-specific for genome informatics to achieve high performance computing by hardware. The processor accelerates dynamic programming frequently employed by genome informatics applications by data-flow parallel processing. A preliminary experiment by soft-ware simulation shows that the processor can perform dynamic programming 13.5 times as fast as purely software processing by PentiumIII of 1GHz CPU clock.
著者
辻 藤吾
出版者
日本土壌肥料學會
雑誌
日本土壌肥料學雜誌 = Journal of the science of soil and manure, Japan (ISSN:00290610)
巻号頁・発行日
vol.71, no.4, pp.454-463, 2000-08-05
参考文献数
7
被引用文献数
4

The author investigated the regional growth disorders of early-planted rice, of which initial growth is severely and peculiarly inhibited, causing yellow stunting of lower leaves and no increase in stem number after approximately 30 to 40 d of transplanting, to paddies supplemented with a basal paste-like fertilizer at the row sides. No specific responses were found among rice varieties. The field experiments and soil analysis of paddies were carried out; firstly to reproduce the disorders in the late planting of rice, and secondly, to diagnose the components of a commercial fertilizer which has been effectively used by a farmer to recover the disorders. The results obtained were as follows; 1) Disordered paddies contained appreciable amounts of ammonium nitrogen in the soil, indicating no effects of nitrogen deficiencies to rice plants. 2) The specific growth disorders of yellow stunting were also found in the late-planted rice cultivation. Furthermore, the application of a granular fertilizer at the row sides showed less growth disorders as compared to the paste-like fertilizer when they were treated in the same experimental paddy. 3) An experiment to separate the farmers practical fertilizer into a few nutrients for diagnosis showed that any nutrient other than sulfate contributed less to recover the disorders. Consequently, in the following early rice planting experiment, in which the growth disorders by paste-like fertilizer were also induced, the application of magnesium sulfate responded well for recovery within several days under a submurged condition, whereas the recovery by surface drainage took more than 10 d. As a conclusion, the author suggests the disorders will be induced primarily by developed soil reduction, hence causing nutritional disorders in rice plants related to temporary sulfate starvation in the soil.
著者
辻 藤吾
出版者
日本土壌肥料學會
雑誌
日本土壌肥料學雜誌 = Journal of the science of soil and manure, Japan (ISSN:00290610)
巻号頁・発行日
vol.71, no.4, pp.464-471, 2000-08-05
参考文献数
7
被引用文献数
1

Sulfur absorption and critical contents of sulfur in disordered rice plants during their initial growth were investigated. The results obtained were as follows; 1) The total sulfur content of rice shoots which were inhibited at the time of late planting by the application of a paste-like fertilizer showed 0.12% in dry matter. When this growth was recovered by using the same fertilizer as that used by a farmer, sulfur content was raised to as high as 0.28% in dry matter, together with a remarkable increase in dry matter. 2) A similar response was observed for the early planting of rice in a farmer's paddy with enhanced increments of total sulfur, from 0.09 to 0.40% in dry matter, by the application of magnesium sulfate, the major component of the commercial fertilizer. Also, dry matter increments were twice as high as those recovered by the surface drainage. 3) Surprisingly, the yellow stunting of the initial growth disorders were found by the incorporation of a chloride fertilizer into the plow layer as a basal. Such nutritional disorders were restricted during the tillering stages and the total sulfur content of the shoots decreased to as low as 0.13% in dry matter. However, the higher absorption of inorganic sulfate between the maximum tillering stage and young panicle formation period contributed greatly to the recovery of sulfur deficiency in the rice. 4) Total sulfur contents as well as N/S ratios were significantly correlated to the relative yields. These critical levels were 0.12 to 0.13% of total sulfur and 25 to 21 of N/S ratios when the relative yields were 50 to 55%. The levels were considered practical indicies as far as the present growth disorders are concerned.
著者
辻 藤吾
出版者
日本土壌肥料學會
雑誌
日本土壌肥料學雜誌 = Journal of the science of soil and manure, Japan (ISSN:00290610)
巻号頁・発行日
vol.71, no.4, pp.472-479, 2000-08-05
参考文献数
13
被引用文献数
3

Sulfate transformation under submurged conditions was investigated by the incubation of Submurged soils applied with granular and paste-like high analysis fertilizers. Secondly, soil samples collected from the fixed paddies for the soil fertility survey, both of farmers and experimental stations, were analysed for humus and sulfur. The results obtained were as follows; 1) Paste-like and granular fertilizers were applied in a layer and mixed in the whole layer respectively, followed by the extraction of soluble and available sulfur with appropriate extractants. As a result, both soluble and available sulfur decreased as the Eh of soils decreased, indicating appreciable amounts of sulfate were transformed to sulfide. 2) Five soils of fixed paddies in which the humus contents differed appreciably were selected to check the changes in available sulfur within 15 y. As a result, humus contents showed relative increases within 15 y, however, the content of available sulfur tended to decrease. The ratios of available to total sulfur significantly decreased within 15 y, indicating the influences of soil pH and/or farmers' practices of fertilizer selection upon the ratios. 3) Soil samples, especially of well-drained paddy in an experiment station, decreased the available sulfur within 20 y. It can be concluded that the greater Eh is reduced in the soils, the higher level of sulfide formed, thus the rice plants will become deficient in sulfate due to the formation of unavailable iron sulfides. This will be much enhanced considering the recent trends of lower levels of available sulfur, which coincidentally inhibited the initial growth of rice in early planting cultivation in our district.