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3 0 0 0 OA Characteristics of a carbon nanotube field-effect transistor analyzed as a ballistic nanowire field-effect transistor

著者: Natori Kenji Kimura Yoji Shimizu Tomo
出版者: American Institute of Physics
雑誌: Journal of applied physics (ISSN:00218979)
巻号頁・発行日: vol.97, no.3, pp.034306, 2005-02
被引用文献数: 94

A general expression of the current-voltage characteristics of a ballistic nanowire field-effect transistor (FET) is derived. At T=0, the conductance, which is equal to the quantum conductance multiplied by the number of channels at zero bias, decreases stepwise toward current saturation as the drain bias is increased. The current-voltage characteristics of a single-wall carbon nanotube FET in ballistic conduction are discussed based on the band structure of the nanotube. When both the gate overdrive and the drain bias are equal to 1 V, the device made of a (19,0) nanotube and a 2-nm high-k gate insulator (epsilon=40epsilon(0)) flows a current of 183 muA, which amounts to a current density 48 times as large as the counterpart of a silicon device. The high performance originates from a high carrier density due to the enhanced gate capacitance, and a large carrier velocity caused by the large group velocity of the original graphene band. Quantum capacitance also plays an important role in the device's characteristics.

2013-01-26 08:31:29
2 CiteULike
1 + 0 Twitter

3 0 0 0 OA FSK変調波のARモデルを用いた復調方式の関数解析的考察(応用函数解析の研究)

著者: 中尾剛江口正義
出版者: 京都大学数理解析研究所
雑誌: 数理解析研究所講究録 (ISSN:18802818)
巻号頁・発行日: vol.975, pp.155-162, 1996-11

http://hdl.handle.net/2433/60781

3 0 0 0 OA 「1930年の精神」とブランショ(一)

著者: 上田和彦 Kazuhiko Ueda
雑誌: 外国語・外国文化研究 (ISSN:02871327)
巻号頁・発行日: no.15, pp.153-185, 2010-07-31

2013-01-25 03:11:39
3 + 5 Twitter

http://hdl.handle.net/10236/9895

3 0 0 0 OA 非契約者間の『違約金』請求ー私人による権利救済の可能性ー

著者: 生田敏康
出版者: 早稲田大学法学会
雑誌: 早稲田法学 (ISSN:03890546)
巻号頁・発行日: vol.74, no.3, pp.369-382, 1999-03-10

http://hdl.handle.net/2065/2370

3 0 0 0 OA 体罰が発生する「構造」とその個別性 : 判例研究の方法論に関する一つの新たな試み(<小特集>学校改善と学校の個別性に関する研究)

著者: 平田淳岡田賢宏
出版者: 東京大学大学院教育学研究科教育行政学研究室
雑誌: 東京大学大学院教育学研究科教育行政学研究室紀要 (ISSN:13421980)
巻号頁・発行日: vol.17, pp.29-49, 1998-03-28

This thesis aims to clarify the structures that corporal punishments happened, extract various factors from the structues and reveal their correlations and interactions through precedent study. As a result, we aim to suggest some recommendations to sweep away corporal punishment for school improvement.

2013-01-14 20:37:57
1 Delicious
2 + 8 Twitter

http://hdl.handle.net/2261/1271

3 0 0 0 OA 小学校教員の連続する労働時間に関する分析 : 給食時間と昼休みに着目して

著者: 小入羽秀敬
出版者: 東京大学大学院教育学研究科
雑誌: 東京大学大学院教育学研究科紀要 (ISSN:13421050)
巻号頁・発行日: vol.50, pp.277-283, 2011-03-10

This paper analyzes the long and continuous work hours of elementary school teachers by reviewing teachers'work-style during lunchtime and lunchtime recess, especially from 11 : 30 to 13 : 30. The problems on teachers'over-work are exposed recently, and the solutions to lighten the teachers'duties are in necessity. Elementary school teachers are busiest in working hours, when students are in the school. They are too busy to take a break during working-hours. This paper defines this phenomenon as "continuous work hours". From the analysis, this paper concludes that many teachers have duties that cannot control by themselves during lunchtime and those uncontrollable duties makes teachers to work long and continuously. Especially, teachers in charge of 1st and 2nd grades are in this trend. To solve this problem, this paper suggests two things. One is to lighten the workload of lunchtime teaching. By setting the lunchroom and cafeteria-aids, teachers'workload on teaching in lunchtime will be relieved. Second, is making a controllable time during their working hours, such as in the morning class. This can be done by assigning special subject teacher, such as art and music. By making the controllable time during the working hours, teachers'health can be more guaranteed than in the past.

2013-01-13 23:16:50
3 + 0 Twitter

http://hdl.handle.net/2261/43610

3 0 0 0 OA 遺伝子ネットワーク再構成による遺伝子発現ダイナミクスの定量的解析(修士論文(2004年度))

著者: 前多裕介
出版者: 物性研究刊行会
雑誌: 物性研究 (ISSN:07272997)
巻号頁・発行日: vol.85, no.5, pp.685-721, 2006-02-20

この論文は国立情報学研究所の電子図書館事業により電子化されました。

2013-01-05 16:32:36
3 + 1 Twitter

http://hdl.handle.net/2433/110395

3 0 0 0 OA ヨーロッパ中・近世史におけるアルプス地域 : 山岳地方における社会・国家・コミュニケーション

著者: 服部良久
出版者: 京都大學大學院文學研究科・文學部
雑誌: 京都大學文學部研究紀要 (ISSN:04529774)
巻号頁・発行日: vol.51, pp.71-106, 2012-03-20

2013-01-03 08:42:10
3 + 1 Twitter

http://hdl.handle.net/2433/154722

3 0 0 0 OA キヤノン : デジタルカメラ事業における国内生産拠点の強化と維持

著者: 阿部智和近藤隆史
出版者: 北海道大学大学院経済学研究科
雑誌: Discussion Paper, Series B
巻号頁・発行日: vol.105, pp.1-20, 2012-08

本ケースの目的は,キヤノンのデジタルカメラ事業が,一見すると,海外需要への迅速な対応とコスト面で不利と考えられている国内自社生産にこだわりながら,業界トップを維持している要因について記述することにある.具体的には,デジタルカメラ市場の動向を踏まえた上で,①国内生産のメリット,②国内生産のメリット追求するためにキヤノンが取り組んできた様々な部門における革新活動の内容,③近年の国内生産拠点の強化の3点に着目しながら,同社のデジタルカメラ生産に関する取り組みについて記述していく.