著者

Ishibashi Nobuyuki Murakami Koichi

出版者

Springer

雑誌

Journal of high energy physics (ISSN:10298479)

巻号頁・発行日

vol.2011, no.7, pp.90, 2011-07

被引用文献数

3 1

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We consider the dimensional regularization of the light-cone gauge type II superstring field theories in the NSR formalism. In the previous work, we have calculated the tree-level amplitudes with external lines in the (NS, NS) sector using the regularization and shown that the desired results are obtained without introducing contact term interactions. In this work, we study the tree-level amplitudes with external lines in the Ramond sector. In order to deal with them, we propose a worldsheet theory to be used instead of that for the naive dimensional regularization. With the worldsheet theory, we regularize and define the tree-level amplitudes by analytic continuation. We show that the results coincide with those of the first quantized formulation.

著者

松本 源太郎

出版者

北海道大学經濟學部 = HOKKAIDO UNIVERSITY SAPPORO,JAPAN

雑誌

北海道大學 經濟學研究 (ISSN:04516265)

巻号頁・発行日

vol.27, no.2, pp.59-88, 1977-05

著者

井上 暁子

出版者

現代文芸論研究室

雑誌

れにくさ

巻号頁・発行日

vol.2, pp.40-61, 2010-12-27

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論文

著者

金城 純一

出版者

[出版者不明]

巻号頁・発行日

2011-02

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制度:新 ; 報告番号:甲3307号 ; 学位の種類:博士(理学) ; 授与年月日:2011/3/15 ; 早大学位記番号:新5611

著者

Held Klaus 丸山 英幸 酒詰 悠太

出版者

京都大学大学院人間・環境学研究科総合人間学部『人間存在論』刊行会

雑誌

人間存在論 = Menschenontologie (ISSN:13412698)

巻号頁・発行日

vol.16, pp.1-16, 2010-07-01

著者

清水 洋輔

出版者

京都大学経済学部岩本武和研究室

雑誌

岩本ゼミナール機関誌

巻号頁・発行日

vol.6, pp.13-29, 2002-03-25

著者

姫野 完治 ヒメノ カンジ Himeno Kanji

出版者

大阪大学大学院人間科学研究科教育学系

雑誌

大阪大学教育学年報 (ISSN:13419595)

巻号頁・発行日

vol.7, pp.47-60, 2002-03

著者

吉田 英一 YOSHIDA Hidekazu 佐々木 重洋 SASAKI Shigehiro 寺田 騰 TERADA Noboru 浅沼 修一 ASANUMA Shuichi 槇原 大悟 MAKIHARA Daigo 桂田 祐介 KATSURADA Yusuke

出版者

名古屋大学博物館

雑誌

名古屋大学博物館報告 (ISSN:13468286)

巻号頁・発行日

vol.25, pp.183-200, 2009-12-25

著者

Drahos Peter 山根 崇邦(訳)

出版者

北海道大学グローバルCOEプログラム「多元分散型統御を目指す新世代法政策学」事務局, 北海道大学情報法政策学研究センター

雑誌

知的財産法政策学研究 (ISSN:18802982)

巻号頁・発行日

vol.37, pp.91-123, 2012-03

著者

内田 吟風

出版者

東洋史研究会

雑誌

東洋史研究 (ISSN:03869059)

巻号頁・発行日

vol.5, no.6, pp.442-443, 1940-10-31

著者

Yoshikawa M. Yasuhara R. Morimoto M. Shima Y. Kohagura J. Sakamoto M. Nakashima Y. Imai T. Yamada I. Kawahata K. Funaba H. Minami T.

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.83, no.10, pp.10E333, 2012-10

被引用文献数

17 6

---

In the GAMMA 10 tandem mirror, the typical electron density is comparable to that of the peripheral plasma of torus-type fusion devices. Therefore, an effective method to increase Thomson scattering (TS) signals is required in order to improve signal quality. In GAMMA 10, the yttrium-aluminum-garnet (YAG)-TS system comprises a laser, incident optics, light collection optics, signal detection electronics, and a data recording system. We have been developing a multi-pass TS method for a polarization-based system based on the GAMMA 10 YAG TS. To evaluate the effectiveness of the polarization-based configuration, the multi-pass system was installed in the GAMMA 10 YAG-TS system, which is capable of double-pass scattering. We carried out a Rayleigh scattering experiment and applied this double-pass scattering system to the GAMMA 10 plasma. The integrated scattering signal was made about twice as large by the double-pass system.

著者

Suzuki Kazuya Z. Yanagihara Hideto Niizeki Tomohiko Kojio Ken Kita Eiji

出版者

American Institute of Physics

雑誌

Applied physics letters (ISSN:00036951)

巻号頁・発行日

vol.101, no.22, pp.222401, 2012-11

被引用文献数

5 4

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Magnetic and magnetotransport properties of pyromellitic dianhydride-4,4′-oxydianiline polyimide-Co granular thin films prepared by vapor deposition polymerization are investigated. The prepared sample is composed of Co particles with diameters of 2–3 nm homogeneously dispersed in a denatured polyimide matrix. The temperature dependence of the resistivity closely follows the T−1/2 law, suggesting that the dominant conduction mechanism is tunneling between metallic granules embedded in the insulating polyimide matrix. The magnetoresistances at 300 and 90 K are 2.6% and 3.0%, respectively. The results indicate that polyimide is a promising material for organic spintronics.

著者

Hojo H. Mase A.

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.77, no.10, pp.10F329, 2006-10

被引用文献数

1 1

---

A new method for determining the electron density of a thin plasma by means of Fabry-Pérot interferometry is proposed. The interferometer consists of two plasma layers and dielectric material surrounded by two plasma layers. The transmittance of electromagnetic waves across the interferometer is calculated, and Fabry-Pérot resonances are demonstrated. It is shown that the electron density can be determined from the measurement of the Fabry-Pérot resonance frequencies. This method can also be applied to the measurement of conduction electron density in semiconductor films.

著者

Handa Shinya Domalain Thierry Kose Katsumi

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.78, no.8, pp.084705, 2007-08

被引用文献数

17 14

---

An MRI pulse programmer has been developed using a single-chip microcontroller (ADμC7026). The microcontroller includes all the components required for the MRI pulse programmer: a 32-bit RISC CPU core, 62 Kbytes of flash memory, 8 Kbytes of SRAM, two 32-bit timers, four 12-bit DA converters, and 40 bits of general purpose I/O. An evaluation board for the microcontroller was connected to a host PC, an MRI transceiver, and a gradient driver using interface circuitry. Target (embedded) and host PC programs were developed to enable MRI pulse sequence generation by the microcontroller. The pulse programmer achieved a (nominal) time resolution of approximately 100 ns and a minimum time delay between successive events of approximately 9 μs. Imaging experiments using the pulse programmer demonstrated the effectiveness of our approach.

著者

Seki Yusuke Kandori Akihiko Kumagai Yukio Ohnuma Mitsuru Ishiyama Akihiko Ishii Tetsuko Nakamura Yoshiyuki Horigome Hitoshi Chiba Toshio

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.79, no.3, pp.036106, 2008-03

被引用文献数

11 14

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We developed a fetal magnetocardiography (fMCG) system that uses a pair of two-dimensional gradiometers to achieve high signal-to-noise ratio. The gradiometer, which is based on a low-Tc superconducting quantum interference device, detects the gradient of a magnetic field in two orthogonal directions. Gradiometer position is easy to adjust by operating the gantry to drive the cryostat in both the swinging and axial directions. As a result, a fMCG waveform for 25 weeks' gestation was measured under an unshielded environment in real time. Moreover, the P and T waves for 25 and 34 weeks' gestation, respectively, were obtained by averaging. These results indicate that this two-dimensional gradiometer is one of the most promising techniques for measuring fetal heart rate and diagnosing fetal arrhythmia.

著者

Handa Shinya Haishi Tomoyuki Kose Katsumi

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.79, no.11, pp.113706, 2008-11

被引用文献数

10 6

---

A local radio frequency (rf) shielding consisting of a Cu plate and an LC balun circuit has been developed for a compact magnetic resonance imaging (MRI) system with a 0.3 T permanent magnet. Performance of the local rf shielding was evaluated using an artificial external noise source irradiating a human subject whose hand was inserted into the rf coil of the MRI system. Power spectra of the rf signal detected through the rf coil demonstrated that the local rf shield achieved 30.1 dB external noise suppression. With the local rf shielding, a MRI of the subject's hand was performed using a three-dimensional gradient-echo sequence. Anatomical structures of the subject's hand were clearly visualized. It was concluded that the local rf shielding could be used for the compact MRI system instead of a rf shielded room.

著者

Kimura Takeshi Geya Yuto Terada Yasuhiko Kose Katsumi Haishi Tomoyuki Gemma Hiroshi Sekozawa Yoshihiko

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.82, no.5, pp.053704, 2011-05

被引用文献数

48 12

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By combining a 0.3 T permanent magnet with flexible rotation and translation mechanism, a probe with a local electromagnetic shielding, several electrical units, a mobile lift, and an electric wagon, a mobile magnetic resonance imaging (MRI) system was developed for outdoor tree measurements. 2D cross-sectional images of normal and diseased branches of a pear tree were acquired for measurements of T1, T2, proton density, and apparent diffusion constant (ADC). The ADC map clearly differentiated diseased from normal branches. A whole-day measurement of the ADC map demonstrated that microscopic water flow in the normal branch changed proportionally with solar radiation. Therefore, we have concluded that our mobile MRI system is a powerful tool for studies of plants in outdoor environments.

著者

Sakakibara Jun Kita Junichiro Osato Naoyuki

出版者

American Institute of Physics

雑誌

Review of scientific instruments (ISSN:00346748)

巻号頁・発行日

vol.83, no.3, pp.036103, 2012-03

被引用文献数

15

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We developed a video recording system with the capability of tracking moving objects and used it to track the flight of an insect. The system consists of two galvano mirrors, which redirect the light coming from the object in two orthogonal directions toward a high-speed camera to capture the image. An additional high-speed camera, which views the same object through a beam splitter placed between one of the galvano mirrors and the observation camera, detects the position of the object. The mirror angle is controlled to maintain the position of the object at the center of the view, allowing the object to be tracked. In order to validate this system, images of a live fly in flight were recorded along a flight path that was much longer than the field of view of the stationary camera. A high-resolution video image of a rapidly moving live fly was successfully captured.

著者

王 大川

出版者

京都大学経済学会

雑誌

経済論叢別冊 調査と研究 (ISSN:09175393)

巻号頁・発行日

vol.30, pp.62-75, 2005-04

著者

酒井 智宏

出版者

東京大学大学院人文社会系研究科・文学部言語学研究室

雑誌

東京大学言語学論集 (ISSN:13458663)

巻号頁・発行日

vol.32, pp.255-276, 2012-09-30

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論文 Articles