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Decadal Variability Shown by the Arctic Ocean Hydrochemical Data and Reproduced by an Ice-Ocean model

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Journal of Ocean University of China 2005年第4期4卷 343-348页

作者： m.ikeda R.Colony H.Yamaguchi T.ikeda Graduate School of Environmental Earth Science Hokkaido UniversitySapporoJapan International Arctic Research CenterUniversity of AlaskaFairbanksAlaskaU.S.A. International Arctic Research Center University of AlaskaFairbanksAlaskaU.S.A. Graduate School of Environmental Earth Science Hokkaido UniversitySapporoJapan

The Arctic is experiencing a significant warming trend as well as a decadal oscillation. The atmospheric circulation represented by the Polar Vortex and the sea ice cover show decadal variabilities, while it has been difficult to reveal the decadal oscillation from the ocean interior. The recent distribution of Russian hydrochemical data collected from the Arctic Basin provides useful information on ocean interior variabilities. Silicate is used to provide the most valuable data for showing the boundary between the silicate-rich Pacific Water and the opposite Atlantic Water. Here, it is assumed that the silicate distribution receives minor influence from seasonal biological productivity and Siberian Rivers outflow. It shows a clear maximum around 100m depth in the Canada Basin, along with a vertical gradient below 100 m, which provides information on the vertical motion of the upper boundary of the Atlantic Water at a decadal time scale. The boundary shifts upward (downward), as realized by the silicate reduction (increase) at a fixed depth, responding to a more intense (weaker) Polar Vortex or a positive (negative) phase of the Arctic Oscillation. A coupled ice-ocean model is employed to reconstruct this decadal oscillation.

关键词： polar oceanography Arctic Oscillation ice-ocean interaction

Characterization of Electronic Charged States of Si-based Quantum Dots for multi-valued mOS memories

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Characterization of Electronic Charged States of Si-based Qu...

Emission Characteristics of NOx and Unburned Carbon in the Fly Ash of Sub-bituminous Coal Combustion

2006 8th International Conference on Solid-State and Integrated Circuit Technology

作者： S.miyazaki K.makihara m.ikeda Graduate School of Advanced Sciences of matter Hiroshima University Kagamiyama 1-3-1Higashi-Hiroshima 739-8530Japan

＜正＞We have found that,for Si dots individually charged with a few electrons or holes,characteristic potential profiles with a dimple around the center of the charged Si dot are observed and can be interpreted in terms of the Coulomb repulsion among the charges retained in the dot. By an introduction of Ge core in Si dots,holes can be well-confined in the Ge core while electrons are stored in the Si clad because of the energy band discontinuity at the interface between the Si clad and the Ge *** influence of ionized impurity doping to Si-QDs on their electron charging and discharging characteristics has also been *** metal-oxide-semiconductor（mOS） capacitors and n-channel mOS field-effect-transistors （n-mOSFETs） with Si-QDs floating gates,distinct multiple-step charging to（or discharging from） the Si-QDs floating gate have been confirmed at room temperature,which are regulated presumably by redistribution of injected electrons in the Si-QDs floating gate for further electron injection（or emission）.

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Emission Characteristics of NOx and Unburned Carbon in the F...

CSPE-JSmE-ASmE International Conference on Power Engineering

作者： m.ikeda Y.Kozai H.makino Chemical Energy Engineering Department CRIEPI(Central Research Institute of Electric Power Industry2-6-1 Nagasaka Yokosuka-shiKanagawa-ken 240-0196 Japan Chemical Energy Engineering Department CRIEPI(Central Research Institute of Electric Power Industry2-6-1 Nagasaka Yokosuka-shiKanagawa-ken 240-0196 Japan Chemical Energy Engineering Department CRIEPI(Central Research Institute of Electric Power Industry2-6-1 Nagasaka

＜正＞At present, coal-fired power stations in Japan use mainly bituminous coal as fuel. Since coalconsumption is increasing worldwide and bituminous coal will be in short supply in the near future,low rank coal with lower calorific value will become an important fuel. Sub-bituminous coal, whichcontains more than 20% moisture, is looked to as a substitute fuel for bituminous coal, as thereserve is the most abundant among low rank coals. Problems involving the utilization of the sub-bituminous coal are the low ignitability and combustion efficiency caused by the moisture in thecoal. Control of NOx emission will also be necessary. Before combustion, coal is carried to thefumace through the mill by hot air When sub-bituminous coal is pulverized, part of moistureremains in the coal and part is vaporized. This report describes the influence of the remainingmoisture in the coal and of the vaporized moisture on the combustion characteristics. This researchwas conducted using a pulverized coal combustion test furnace （coal combustion rate f 0.1t/h）.Furthermore, in order to optimize combustion conditions for sub-bituminous coal, we investigatedthe influence of the distribution ratio and the swiri force of secondary and tertiary air on the emissionof NOx and unbumed carbon in the fly ash. As a result, we clarified that, when the ratio of remainingmoisture in the coal to that of the total amount of moisture was higher, ignition worsened and thecombustion flame became widely diffused. Therefore, emissions of both Nox and unbumed carbonconcentration in the fly ash increased. When combustion air injection conditions, meaning Air/Coal and swirl force, were optimized for sub-bituminous coal, ignition conditions improved andemissions of both NOx and unbumed carbon in the fly ash decreased. Although ignition conditionsworsened when the remaining moisture conent in the coal was higher, adjustment of the combustionair injection conditions for higher moisture coal effectively improved igni

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流动变压器油的击穿特性

变压器 1988年第12期 34-36+13页

作者： m.ikeda 韩贵

为尽快研制电压等级高于1000kV的超高压变压器,提高变压器油的击穿场强是其关键之一。但变压器油精制到工业允许程度,仍含有可测杂质,油中杂质对油的绝缘击穿起到重要作用。通过减少油中杂质可有效地提高油的击穿场强,因此需要对其进行... 详细信息

为尽快研制电压等级高于1000kV的超高压变压器,提高变压器油的击穿场强是其关键之一。但变压器油精制到工业允许程度,仍含有可测杂质,油中杂质对油的绝缘击穿起到重要作用。通过减少油中杂质可有效地提高油的击穿场强,因此需要对其进行深入的研究。一、试验装置及结果

关键词：变压器油击穿概率超高压变压器液体绝缘材料电力变压器直流击穿电压击穿场强击穿特性

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低噪声受电弓

大功率变流技术 1995年第10期 39-40页

作者： m.ikeda 郭立新日

机车或动车顶部的凸出部件——受电弓是空气动力学噪声的主要来源。日本研究人员正在研制一种能将350 km/h速度的受电弓噪声降至70 dB(A)的低噪声受电弓。

关键词：受电弓研制低噪声高速

Crustal Tomography Under the median Tectonic Line in Southwest Japan Using P and PmP data

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地学前缘 2009年第S1期16卷 67-67页

作者： Sandeep Gupta Dapeng Zhao m.ikeda S.Ueki S.S.Rai National Geophysical Research Institute Council of Scientific and Industrial Research Department of Geophysics Tohoku University Department of Civil Engineering Shikoku Research Institute

The median Tectonic Line(mTL)is the largest active fault system on the Japan Islands and underlies many densely populated *** understand the seismotectonics and to reduce seismic hazard in the mTL region,we determined a detailed 3-D crustal structure under the region using a large number of arrival times of the first P-waves and moho-reflected waves(PmP).Results of detailed resolution tests show that the addition of PmP data can significantly improve the resolution of the lower crustal structure and the entire crustal structure can be imaged better than that by using P-wave data ***

关键词： median tectonic line(mTL) seismic tomography hazard mitigation low-velocity anomalies fluids

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取向的力学效应

绝缘材料 1981年第4期 42-45页

作者： Richard m.ikeda 左榘谢光贤

在分子有序性的力学效应研究中,我们研究了一种聚合物体系,结果表明,这种聚合物的损耗机理似乎与分子的有序性相关。我们所研究的聚合物是由均苯四酸和4,4′—二氨基二苯醚合成的聚酰亚胺。本文报导两种样品的测试结果,一种是由模压样... 详细信息

在分子有序性的力学效应研究中,我们研究了一种聚合物体系,结果表明,这种聚合物的损耗机理似乎与分子的有序性相关。我们所研究的聚合物是由均苯四酸和4,4′—二氨基二苯醚合成的聚酰亚胺。本文报导两种样品的测试结果,一种是由模压样品加工成的,其尺寸为

关键词：薄膜样品损耗峰衍射强度层状结构结晶指数布拉格捷克介电损耗介质损耗介电性质取向角损耗机理力学效应

多层CT评估胰腺导管内乳头状黏液瘤的侵袭性

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国际医学放射学杂志 2008年第A6期31卷 487-488页

作者： H.Ogawa S.Itoh m.ikeda K.Suzuki S.Naganawa 郭欢仪 Department of Radiology Nagoya University Graduate School of Medicine65 Tsurumai-choShowakuNagoya 466-8560Japan

目的对用多层CT了解胰腺导管内乳头状黏液瘤(intraductal papillary mucinous neoplasm,IPmN)有无侵袭性的价值进行评价。

关键词：胰腺导管 intraductal mucinous neoplasm papillary 黏液瘤侵

Symmetric silicon microring resonator optical crossbar array for accelerated inference and training in deep learning

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Photonics Research 2024年第8期12卷 1681-1688页

作者： RUI TANG SHUHEI OHNO KEN TANIZAWA KAZUHIRO ikeda mAKOTO OKANO KASIDIT TOPRASERTPONG SHINICHI TAKAGI mITSURU TAKENAKA Department of Electrical Engineering and Information Systems The University of TokyoTokyo 113-8656Japan Quantum ICT Research Institute Tamagawa UniversityTokyo 194-8610Japan National Institute of Advanced Industrial Science and Technology Ibaraki 305-8568Japan

Photonic integrated circuits are emerging as a promising platform for accelerating matrix multiplications in deep learning,leveraging the inherent parallel nature of *** various schemes have been proposed and demonstrated to realize such photonic matrix accelerators,the in situ training of artificial neural networks using photonic accelerators remains challenging due to the difficulty of direct on-chip backpropagation on a photonic *** this work,we propose a silicon microring resonator(mRR)optical crossbar array with a symmetric structure that allows for simple on-chip backpropagation,potentially enabling the acceleration of both the inference and training phases of deep *** demonstrate a 4×4 circuit on a Si-on-insulator platform and use it to perform inference tasks of a simple neural network for classifying iris flowers,achieving a classification accuracy of 93.3%.Subsequently,we train the neural network using simulated on-chip backpropagation and achieve an accuracy of 91.1%in the same inference task after ***,we simulate a convolutional neural network for handwritten digit recognition,using a 9×9 mRR crossbar array to perform the convolution *** work contributes to the realization of compact and energy-efficient photonic accelerators for deep learning.

关键词： resonator neural matrix