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Effects of Sheared Flow on Microinstabilities and Transport in Plasmas

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Plasma Science and Technology 2005年第1期7卷 2610-2614页

作者： H.Sanuki k.itoh A.Fujisawa J.Q.Dong National Institute for Fusion Science Toki Gifu 509-5292 JapanNational Institute for Fusion Science Toki Gifu 509-5292 JapanNational Institute for Fusion Science Toki Gifu 509-5292 JapanSouthwestern Institute of Physics Chengdu 610041 China

Theoretical and experimental studies associated with electric field effectson the stability and transport are briefly surveyed. The effects of radial electric field on thesuppression and/or enhancement of various microinstabilities such as drift waves, flute mode andtemperature gradient modes are discussed. The suppression of flow shear on the electron temperaturegradient mode in plasmas with slightly hollow density profiles is investigated by solving thegyrokinetic integral eigenvalue equation. Comparison between theoretical predictions andexperimental observations based on the HIBP measurements with high temporal and spatial resolutionsis made in bumpy tori and heliotron (CHS) devices.

关键词： sheared flow microinstabilities transport bumpy tori heliotron

DIAGRAMMATIC EDUCATION FOR SOFTWARE ENGINEERING

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DIAGRAMMATIC EDUCATION FOR SOFTWARE ENGINEERING

kNOWLEDGE MANAGEMENT AND kNOWLEDGE REPRESENTATION FOR SYSTEMS ANALYSIS

The Eighth World Conference on Integrated Design & Process Technology

作者： R.kawabata k.itoh Laboratory Information and Systems Engineering Sophia University Tokyo

In the education of software engineering, it is important to educate learners about diagrammaticrepresentations for analyzing configurations or functions of a target system. In systems analysis twoor

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KNOWLEDGE MANAGEMENT AND KNOWLEDGE REPRESENTATION FOR SYSTEM...

Effects of the Safety Factor on Ion Temperature Gradient Modes

The Eighth World Conference on Integrated Design & Process Technology

作者： R.kawabata k.itoh Laboratory Information and Systems Engineering Sophia University Tokyo Japan Laboratory Information and Systems Engineering Sophia University Tokyo Japan

In this paper, the method for systems analysis based on knowledge management is proposed. In thesystems development, the system is analyzed in terms of several system views to acquire therequirements

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Southwestern Institute of Physics Annual Report 2002年第1期 84-87页

作者： WANGAike DONGJiaqi H.Sanuki k.itoh 不详 NationalInstituteforFusionScience TokiGifu509-5292Japan

In the previous models for the ion temperature(ITG)driven instability,the safety factor (r) is introduced into the model through the wavenumber or relative derivative,such sa kθ=lq(r)/r and △1=ik1=(Rq)^-1э/эθ.sin... 详细信息

关键词：安全系数离子温度斜率电流密度效应磁流体力学

Instability and Transport Driven by an Electron Temperature Gradient Close to Critical

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Southwestern Institute of Physics Annual Report 2002年第1期 73-77页

作者： DONGJiaqi JIANGuangde WANGAike H.Sanuki k.itoh 不详 NationalInstituteforFusionScience TokiJapan

Recent observations on tokamaks have shown that, within internal transport barriers (ITBs), electron thermal transport hardly changes while ion thermal diffusivity is reduced to the neoclassical level. These findings ... 详细信息

关键词：不稳定性托卡马克装置电子热传输离子热扩散等离子体物理模型

Development of Analyzing Method of Small-Angle Scattering for Size Distribution of Segregation Particles in Metal Alloy

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Development of Analyzing Method of Small-Angle Scattering fo...

作者： M.Sugiyama S.kawabe k.Mori k.itoh T.Fukunaga Research Reactor Institute Kyoto University Graduate School of Engineering Kyoto University

INTRODUCTION:Small-angle scattering(SAS) is one of very powerful tools to analyze nano-scale structure. However,standard analysis methods,such as Guinier analysis,Ornstein-Zernike analysis and so on,give us average size of particles and/or average length of density fluctuation in an observed *** means that detailed particle shape,size distribution and position distribution are not obtained with the standard analyzing *** overcome the limitations in SAS,we are developing a

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重载柴油机陶瓷涂层排气管的开发研究

柴油机设计与制造 1994年第2期3卷 20-26页

作者： k.itoh 邱国平

在提高发动机动力性和降低废气排放的同时,排气温度相应提高,从而产生新的问题,即排气管内表面氧化和热变形。在此背景下,开发了一种新颖的陶瓷涂层排气管。涂覆物质有两层,内层是抗氧化层,结构较致密,它与铸铁基体的热膨胀系数相同;... 详细信息

在提高发动机动力性和降低废气排放的同时,排气温度相应提高,从而产生新的问题,即排气管内表面氧化和热变形。在此背景下,开发了一种新颖的陶瓷涂层排气管。涂覆物质有两层,内层是抗氧化层,结构较致密,它与铸铁基体的热膨胀系数相同;外层为隔热层,结构疏松。因此这两个涂层能承受高温排气的热冲击所引起的破坏和剥离,可用于形状复杂的排气管内表面。通过采用这种新开发的陶瓷涂层技术,将使传统的球墨铸铁排气管改进成具有高耐热性排气管。

关键词：柴油机高温搪瓷排出管

高b值扩散加权磁共振成像胆囊癌检出的初步研究与研究结果

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国际医学放射学杂志 2009年第5期32卷 511-511页

作者： R.Sugita T.Yamazaki A.Furuta k.itoh N.Fujita S.Takahashi 郭雪梅 Department of Radiology Sendai City Medical Center

本研究旨在回顾性评价高b值扩散加权成像（DWI）对于胆囊癌的检出价值。15例胆囊癌病人和14例其他病人纳入研究。所有病人均进行了DWI检查，由2位放射科医师评价影像。计算受试者工作特征曲线的曲线下面积（AUC）、测量得到的表观扩散... 详细信息

本研究旨在回顾性评价高b值扩散加权成像（DWI）对于胆囊癌的检出价值。15例胆囊癌病人和14例其他病人纳入研究。所有病人均进行了DWI检查，由2位放射科医师评价影像。计算受试者工作特征曲线的曲线下面积（AUC）、测量得到的表观扩散系数（ADC）、敏感度和特异度。

关键词：胆囊癌 MRI 扩散

Response of plasma turbulence against externally-controlled perturbations

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Chinese Physics B 2012年第9期21卷 385-395页

作者： S. I. itoh k. itoh Research Institute for Applied Mechanics Kyushu University itoh Research Center for Plasma Turbulence Kyushu University National Institute for Fusion Science

A theory of the dynamic response of the turbulent plasma against the externally-controlled perturbations is reported. Based on Mori＇s method [Prog. Theor. Phys. 33 423 （1965）], the nonlinear force is assmned to be separated into the memory function and the nonlinear fluctuating force. The former corresponds to the damping term, and the latter is categorized into the noise term. The response of the turbulent plasma against the externally-controlled source is formulated. The response kernel, which connects the externally-controlled source and the response of the turbulent field, is shown to have both the nonlocal property （in space） and the non-Markovian response （in time）. A discussion is made on the nonlocal and non-Markovian response, including the case of disparate-scale interactions. A new method is proposed to observe experimentally the nonlocal interaction in the drift wave turbulence via the zonal flows.

关键词： turbulent transport nonlocal and non-Markovian response