Search Results:　 1-20 of 82

  • 1

    Study on the Fault Location Method for Power Cables using the Time-frequency Analysis

    Kobayashi Shinichi , Morimoto Nozomi , Miyajima Kazuhisa , Hozumi Naohiro

    … It locates the breakdown point by measuring the delay time of the echo or the discharge signal coming from the breakdown point. … In this report, signal processing in the time-frequency domain is proposed to solve this problem. … The phase difference was interpreted as the time lag at an identical frequency. …

    IEEJ Transactions on Power and Energy 131(10), 849-854, 2011

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  • 2

    Development of high performance panel and drive method for full HD 3D plasma display  [in Japanese]

    Ishizuka Mitsuhiro , Shiozaki Yuya , Origuchi Takahiko , Sakata Kazuaki

    3DフルHDプラズマディスプレイを実現するため、3D化に必要な技術として、パネル性能向上を目的としたセルデザインと材料を新規開発した。また併せて3D表示時のクロストークを低減する新たな駆動方法を開発した。これらの技術内容を紹介する。

    ITE Technical Report 34(30), 13-16, 2010-07-23

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  • 3

    Characterization of the Initial Stage of Discharges between Micro-gap in Liquid using Optical Measurement  [in Japanese]

    KANEMARU Makoto , SORIMACHI Shohei , IBUKA Shinji , ISHII Shozo

    … The pulsed arc discharges in liquid between a micro-gap composed of a tungsten wire and a copper rod were characterized for the application to electrical discharge micro-machining. … We discussed the spark formation and optical emission spectral lines of micro-gap discharge in liquid. … The discharge time lag depends on the breakdown process and discharge position on the surface of the plate electrode. …

    IEEJ Transactions on Fundamentals and Materials 130(4), 313-318, 2010-04-01

    J-STAGE CrossRef References (14) Cited by (1)

  • 4

    IMID2009 Report : Plasma Display Panels  [in Japanese]

    KAJIYAMA Hiroshi

    IMID2009におけるプラズマディスプレイ(PDP)セッションをレビューする。高効率放電ダイナミクス、低電圧・高速駆動用保護膜、透明PDPなどの研究のトレンドを紹介したのち、該当論文の位置づけ、結論を概説する。

    ITE Technical Report 33(53), 1-4, 2009-11-27

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  • 5

    IMID2009 Report : Plasma Display Panels  [in Japanese]

    KAJIYAMA Hiroshi

    IMID2009におけるプラズマディスプレイ(PDP)セッションをレビューする。高効率放電ダイナミクス、低電圧・高速駆動用保護膜、透明PDPなどの研究のトレンドを紹介したのち、該当論文の位置づけ、結論を概説する。

    IEICE technical report. Electronic information displays 109(312), 1-4, 2009-11-20

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  • 6

    Numerical Simulation of Secondary Discharge Peak Generation in a Steep Forested Hillslope of Weathered Granite

    SONODA Mieko , KOSUGI Ken'-ichirou , MIZUYAMA Takahisa

    地形と物性分布が調べられている急傾斜な風化花崗岩森林試験斜面で,流出2次ピーク発生の数値シミュレーションをした.流出2次ピークは,斜面に浸透した雨水の流出遅れからなる.流出遅れの原因は2つあり,一つは,雨水が斜面の中に浸透し飽和帯を形成するのに時間がかかること,もう一つは,斜面中に不連続な飽和帯ができるとき,それが斜面方向に連続するのに時間がかかることである.明日香試験流域の実測では,流出2次ピー …

    Transactions, Japanese Geomorphological Union 30(3), 161-188, 2009-07-25

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  • 7

    IMID2008 Report : Plasma Display Panels  [in Japanese]

    KAJIYAMA Hiroshi

    IMID2008におけるプラズマディスプレイ(PDP)セッションをレビューする。高効率放電、低電圧・高速駆動用保護膜の研究のトレンドを紹介したのち、該当論文の結論、位置づけを概説する。

    ITE Technical Report 33(2), 5-9, 2009-01-16

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  • 8

    IMID2008 Report : Plasma Display Panels  [in Japanese]

    KAJIYAMA Hiroshi

    IMID2008におけるプラズマディスプレイ(PDP)セッションをレビューする。高効率放電、低電圧・高速駆動用保護膜の研究のトレンドを紹介したのち、該当論文の結論、位置づけを概説する。

    IEICE technical report. Electronic information displays 108(381), 5-9, 2009-01-09

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  • 9

    Effect of Mircro-Bubbles for Propagation of Pulsed Discharge in Water  [in Japanese]

    NISHIYAMA Hiroyuki , KADOWAKI Kazunori , NISHIMOTO Sakae , KITANI Isamu

    電気学会研究会資料. PST, プラズマ研究会 2007(62), 63-68, 2007-12-21

    References (11)

  • 10

    Spatial and Seasonal Variations of Surface Water Nitrogen and Phosphorus of Chita Bay  [in Japanese]

    Mito Yugo , Yamada Yoshihiro , Ogawa Hiroshi , Yamamoto Toshiya , Tada Kuninao

    知多湾における窒素とリンの循環を解析するため,表層水中の各形態の窒素およびリンの分布を空間的,季節的に明らかにした.溶存態無機窒素(DIN)とリン酸態リン(PO_4^<3->-P)は矢作川河口域で高く,矢作川からの流入が主要な供給源の一つであると考えられた.懸濁態窒素(PN)と懸濁態リン(PP)はクロロフィルaの分布とよく一致しており,湾内での内部生産による影響が大きいと考えられた.溶 …

    Bulletin on coastal oceanography 44(2), 191-202, 2007-02-28

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  • 11

    Experimental Study of Similarity Laws in Gas Breakdown with Repetitive Nanosecond Pulses

    Shao Tao , Sun Guangsheng , Yan Ping , Zhang Shichang

    … Furthermore, the product of gas pressure and breakdown time lag is related to electric field divided by gas pressure. … The experimental results indicated that breakdown voltage was close to DC value when repetition rate was up to 1 kHz, and the product of gas pressure and breakdown time lag is unambiguously associated with E-field strength divided by gas pressure under repetitive nanosecond-pulse conditions. …

    Jpn J Appl Phys 46(2), 803-805, 2007-02-15

    The Japan Society of Applied Physics References (15)

  • 12

    311 Self-excited Vibration of an Overflow Pipe due to Fluid Discharge : Instability Mechanism and Vibration Suppression  [in Japanese]

    WATANABE Masahiro , KOJIMA Yusuke , TANAKA Hideaki , ICHIKAWA Junichi

    … This paper deals with self-excited vibration of an overflow pipe due to fluid discharge. … In this study, the experiments and analysis are carried out to determine the relation among the lag time, the inflow rate, the flow velocity, the fluid force at elbow part and fall height of the fluid falling along the vertical pipe. …

    Dynamics & Design Conference 2006, "311-1"-"311-6", 2006-08-06

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  • 13

    Voltage-time Characteristics Estimation by Streamer Model and Equal-area Criterion  [in Japanese]

    TOYOTA Hiroyuki , MIZOBUCHI Takashi , MATSUOKA Shigeyasu , KUMADA Akiko , HIDAKA Kunihiko

    … Since electrical discharge development is very fast and influenced by the probability largely, strict condition control and high-resolution measurements are difficult. … This paper describes numerical estimation of the sparkover voltages and time lag (V-t) characteristics utilizing a hydrodynamic numerical numerical modeling of a streamer and the equal-area criterion. …

    IEEJ Transactions on Fundamentals and Materials 126(8), 789-794, 2006-08-01

    J-STAGE CrossRef References (7) Cited by (1)

  • 14

    IMID'05 Report : Plasma Display Session  [in Japanese]

    IKEDA Satoshi , YOSHINO Kyohei

    ITE technical report 29(68), 11-14, 2005-11-18

    References (1)

  • 15

    IMID'05 Report : Plasma Display Session  [in Japanese]

    IKEDA Satoshi , YOSHINO Kyohei

    IMID'05のプラズマディスプレイ関連セッションにおいて発表された内容について報告する。発表件数は口頭発表30件、ポスター発表24件の計54件であった。発表内容は、材料・プロセスに関する特性改善の発表と、セル構造の工夫による発光効率の改善、新駆動方法による放電遅れ改善に関する発表が中心であった。各セッションを代表する、計6件の注目すべき発表について解説する。

    IEICE technical report. Electronic information displays 105(421), 11-14, 2005-11-11

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  • 16

    107 Self-Excited Vibrations of Overflow Pipes due to Fluid Discharge  [in Japanese]

    KOJIMA Yusuke , WATANABE Masahiro , TANAKA Hideaki

    … This paper deals with self-excited vibrations of overflow pipes due to fluid discharge. … In this study, the experiments and analysis are carried out to determine the relation among the lag time, the inflow rate, the flow velocity, the fluid force at elbow part and fall height of the fluid falling along the vertical pipe. …

    Dynamics & Design Conference 2005, "107-1"-"107-5", 2005-08-22

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  • 17

    A new flow rate measuring method -SGC(submarine groundwater discharge) flux chamber and its approach off Katakai Alluvial Fan, Toyama Bay, Central Japan(<Special section>Geosciences of submarine groundwater discharge)  [in Japanese]

    ZHANG Zing , HAGIWARA Takashi , KOYAMA Yuki , SATAKE Hiroshi , NAKAMURA Tetsuya , ASAI Kazumi

    … Submarine groundwater discharge (SGD) is becoming recognized as a significant source of fresh water and chemical fluxes into the coastal oceans around the world. … On tidatime scales, the SGD flux increases with the dropping of the tide level with a time lag of 2 hours. … Longer time series at multiple sites willbe required to discern the relations between the SGD flux and river flow rate, precipitation, and long-term (seasonal) changes of the landward unconfined aquifers. …

    地球化学 39(3), 141-148, 2005-08-20

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  • 18

    Measurement of Sparkover Voltage and Time Lag Characteristics in CF_3I-N_2 and CF_3I-Air Gas Mixtures by using Steep-front Square Voltage  [in Japanese]

    TOYOTA Hiroyuki , MATSUOKA Shigeyasu , HIDAKA Kunihiko

    … A square pulse voltage is useful for studying electrical discharge physics or very fast transient overvoltage issues. … This paper describes sparkover voltages and time lag (V-t) characteristics of CF3I gas, which has very low environmental effects and high dielectric strength, and its mixtures with nitrogen gas or air in a very short time range below a microsecond. …

    IEEJ Transactions on Fundamentals and Materials 125(5), 409-414, 2005-05-01

    J-STAGE CrossRef References (19) Cited by (8)

  • 19

    Effect of Initial-electron Supply by γ-ray Irradiation for Breakdown Characteristics of an Insulation Gas  [in Japanese]

    SHINKAI Hiroyuki , GOSHIMA Hisashi , MIKI Megumu , YASHIMA Masafumi

    … In the measurement of discharge characteristics of a gas in a controlled condition, such as under pressure, the electrodes are set up in a pressure vessel. … This often makes a deficiency of initial electrons between gaps, resulting in increase of statistical time lag and dispersion of discharge voltage. …

    IEEJ Transactions on Fundamentals and Materials 125(4), 323-330, 2005-04-01

    J-STAGE CrossRef References (15)

  • 20

    Measurement of Sparkover Voltage and Time Lag Characteristics in SF_6-N_2 Gas Mixtures by using Steep-front Square Voltage  [in Japanese]

    TOYOTA Hiroyuki , MATSUOKA Shigeyasu , HIDAKA Kunihiko

    … A square pulse voltage is useful for studying electrical discharge physics and/or very fast transient overvoltage issues. … This paper describes sparkover voltages and time lag (V-t) characteristics of SF6-N2 gas mixtures in a very short time range below a microsecond, which are measured by using a steep-front square voltage with a rise time of 16 nanoseconds and a peak value of 200 kilovolts. …

    IEEJ Transactions on Fundamentals and Materials 125(2), 153-158, 2005-02-01

    J-STAGE CrossRef References (14) Cited by (5)