Search Results 1-20 of 52

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  • LES EVALUATION OF WIND LOADS ON A FLAT PLATE ROOF BASED ON VALIDATION WITH COMPLEX POD ANALYSIS  [in Japanese]

    NAKAMURA Ryohei , TANIGUCHI Tetsuro

    … For wind-resistant design of buildings, it is required to predict accurately the peak wind loads, and the Large Eddy Simulation (LES) effective in obtaining approximately equivalent evaluation of wind loads on the buildings in urban areas to the results obtained in wind tunnel experiments. … On the other hand, wind pressures on each part of structures fluctuate with some correlation mutually. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (743), 23-33, 2018-01

    J-STAGE  AIJ 

  • Direct measurement of benthic oxygen flux using the eddy-covariance technique  [in Japanese]

    Kuwae Tomohiro

    … The newly developed eddy-covariance technique overcomes these limitations. … The eddy-covariance technique is based on the principle that vertical flux is expressed by an average of the product of fluctuating vertical velocity and passive scalar, such as dissolved oxygen. … Here I review previous studies using the eddy-covariance technique and two case studies on in-situ measurement of benthic oxygen exchange rates. …

    Journal of Advanced Marine Science and Technology Society 22(1), 47-56, 2016

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  • E224 Concurrent Large Eddy Simulation of Two-dimensional Impingement Jet Cooling on Ribbed Walls  [in Japanese]

    Wakumoto Go , Oda Yutaka

    … In wall jet region of impingement jet, installation of rib turbulator is an effective technique to prevent rapid decay of local heat transfer. … The use of Concurrent-LES and correlation coefficient realized the direct and quantitative comparison of instantaneous turbulent structure among two different ribs. …

    The Proceedings of the Thermal Engineering Conference 2015(0), _E224-1_-_E224-2_, 2015

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  • FLOW STRUCTURES AND SUSPENDED SEDIMENT TRANSPORT AROUND SUBMERGED SPUR-DIKES  [in Japanese]

    AKAHORI Ryosuke , MATSUO Yosuke , YOSHIMURA Chihiro

    … In this study, coherent flow structures and mechanisms of suspended sediment transport around submerged spur-dikes were investigated by performing a flume experiment with Particle Image Velocimetry (PIV) technique for particles of neutral buoyancy and relatively heavy materials. … Large Eddy Simulation (LES) and Direct Numerical Calculation (DNS) of particle motion were additionally applied in order to interprete the results by the PIV experiment. …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 68(4), I_1147-I_1152, 2012

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  • Oxygen consumption flux across the sediment-water interface: in situ measurements by the eddy-correlation technique  [in Japanese]

    桑江 朝比呂 , 中川 康之 , 三好 英一

    Journal of coastal engineering, JSCE 55-2, 1001-1005, 2008-10

  • Oxygen Consumption Flux Across the Sediment:Water Interface: In Situ Measurements by the Eddy-Correlation Technique

    KUWAE Tomohiro , NAKAGAWA Yasuyuki , MIYOSHI Eiichi

    … Here we overcome these disadvantages by applying the eddy-correlation technique toin situ oxygen consumption flux measurements. …

    PROCEEDINGS OF COASTAL ENGINEERING, JSCE (55), 1001-1005, 2008

    J-STAGE  Cited by (1)

  • Direction-of-Arrival Estimation of M-1 Signals based on Unitary-ESPRIT and Successive-Selection Technique with an M-Element Hexagonal Array

    TAILLEFER Eddy , CHENG Jun , TAROMARU Makoto

    Unitary-ESPRITアルゴリズムとは同一形状であるサブアレー対に分けられる2素子以上のアレーアンテナを用い,サブアレー素子数と同じ数の到来波の方向を推定する方法である.但し,推定できる波数はアレーアンテナ素子数のほぼ半分になる.また,平行移動の関係にあるサブアレーにより推定するためリニアアレーによる推定と同様に不確定性が生じる。本稿では,六角形の配列をしたM素子のアレーアンテナを用い,全方 …

    IEICE technical report 107(260), 75-80, 2007-10-11

    References (9)

  • Air-Sea CO_2 Flux by Eddy Covariance Technique in the Equatorial Indian Ocean

    KONDO FUMIYOSHI , TSUKAMOTO OSAMU

    Journal of oceanography 63(3), 449-456, 2007-06-01

    References (14) Cited by (2)

  • A Theoretical Performance Study of the ESPRIT Algorithm for the 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , SHIMIZU Tatsuya , OHIRA Takashi

    最近, 順方向/逆方向平均法(Forward-Backward Averaging)と7素子ESPAR (Electronically Steerable Parasitic Array Radiator)アンテナのESPRITアルゴリズムとの組合(FBA-ESPRIT-ESPAR)を用いたコヒレント波あるいは高い相関のある2波の到来方向を推定する手法を提案した.しかし、その手法における推定精度の …

    Technical report of IEICE. RCS 104(680), 151-156, 2005-03-04

  • A Theoretical Performance Study of the ESPRIT Algorithm for the 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , SHIMIZU Tatsuya , OHIRA Takashi

    最近, 順方向/逆方向平均法(Forward-Backward Averaging)と7素子ESPAR (Electronically Steerable Parasitic Array Radiator)アンテナのESPRITアルゴリズムとの組合(FBA-ESPRIT-ESPAR)を用いたコヒレント波あるいは高い相関のある2波の到来方向を推定する手法を提案した.しかし、その手法における推定精度の …

    IEICE technical report. Antennas and propagation 104(677), 151-156, 2005-03-04

  • A Theoretical Performance Study of the ESPRIT Algorithm for the 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , SHIMIZU Tatsuya , OHIRA Takashi

    最近, 順方向/逆方向平均法(Forward-Backward Averaging)と7素子ESPAR (Electronically Steerable Parasitic Array Radiator)アンテナのESPRITアルゴリズムとの組合(FBA-ESPRIT-ESPAR)を用いたコヒレント波あるいは高い相関のある2波の到来方向を推定する手法を提案した.しかし、その手法における推定精度の …

    IEICE technical report. WBS, Wideband System 104(674), 151-156, 2005-03-04

  • A Theoretical Performance Study of the ESPRIT Algorithm for the 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , SHIMIZU Tatsuya , OHIRA Takashi

    最近, 順方向/逆方向平均法(Forward-Backward Averaging)と7素子ESPAR (Electronically Steerable Parasitic Array Radiator)アンテナのESPRITアルゴリズムとの組合(FBA-ESPRIT-ESPAR)を用いたコヒレント波あるいは高い相関のある2波の到来方向を推定する手法を提案した.しかし、その手法における推定精度の …

    IEICE technical report 104(683), 151-156, 2005-03-04

  • A Theoretical Performance Study of the ESPRIT Algorithm for the 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , SHIMIZU Tatsuya , OHIRA Takashi

    最近, 順方向/逆方向平均法(Forward-Backward Averaging)と7素子ESPAR (Electronically Steerable Parasitic Array Radiator)アンテナのESPRITアルゴリズムとの組合(FBA-ESPRIT-ESPAR)を用いたコヒレント波あるいは高い相関のある2波の到来方向を推定する手法を提案した.しかし、その手法における推定精度の …

    IEICE technical report. Microwaves 104(686), 151-156, 2005-02-25

  • Improvement of an Air Sampling System for the True Eddy Accumulation Technique

    KOMORI Daisuke , AOKI Masatoshi , NAGASHIMA Takuo , ISHIDA Tomoyasu

    … There are several kinds of techniques to measure vertical fluxes including the true eddy accumulation (TEA) technique. … The significant advantages of the TEA technique are that it is a direct flux measurement technique and is applicable to the trace gases which require either slow response analyzer or installation of adsorbent for condensation. … Therefore, we have developed an air sampling system that is suitable for the TEA technique.<br> …

    Journal of Agricultural Meteorology 60(5), 529-532, 2005

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  • Development of an Air Sampling System for the True Eddy Accumulation Technique

    KOMORI Daisuke , AOKI Masatoshi , ISHIDA Tomoyasu , SUZUKI Satoru , SATOU Takashi , KIM Wonsik

    渦集積法は直接的なガスフラックス測定法とされる。この測定法は高い応答性のガス分析計を必要とせず,また濃縮を必要とする微量ガスの測定も可能であり,微量ガスフラックスの測定に適している。しかし,鉛直風速に比例した空気量を高速でサンプリングすることは技術的に非常に難しい。そこで本研究では,渦集積法のためのサンプリングシステムの開発を目的とした。<br>本研究で開発したサンプリングシステムは, …

    Journal of Agricultural Meteorology 60(4), 263-272, 2004-12-10

    J-STAGE  JASI  References (12)

  • CO_2 Flux Measurements over the Sea Surface by Eddy Correlation and Aerodynamic Techniques

    IWATA TORU , YOSHIKAWA KEIKO , NISHIMURA KATSUTOSHI , HIGUCHI YOSHIHISA , YAMASHITA TAKAO , KATO SHIGERU , OHTAKI EIJI

    Journal of Oceanography 60(6), 995-1000, 2004-12-01

    References (12) Cited by (2)

  • Direction-of-Arrival Estimation of Two Coherent Signals Employing the ESPRIT Algorithm for a 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , AONO Tomoyuki , OHIRA Takashi

    7素子正六角形のESPAR(Electronically Steerable Parasitic Array Radiator)アンテナが菱形のサブアレーに分割できることに着目してESPRIT(Estimation of Signal Parameters via Rotational Invariance Techniques)アルゴリズムを適用する手法を提案した。その手法を用い水平面の無相関3 …

    Technical report of IEICE. RCS 104(399), 141-146, 2004-10-29

    References (7)

  • Direction-of-Arrival Estimation of Two Coherent Signals Employing the ESPRIT Algorithm for a 7-element ESPAR Antenna

    PENCOLE Mickael , TAILLEFER Eddy , AONO Tomoyuki , OHIRA Takashi

    7素子正六角形のESPAR(Electronically Steerable Parasitic Array Radiator)アンテナが菱形のサブアレーに分割できることに着目してESPRIT(Estimation of Signal Parameters via Rotational Invariance Techniques)アルゴリズムを適用する手法を提案した。その手法を用い水平面の無相関3 …

    IEICE technical report. Antennas and propagation 104(396), 141-146, 2004-10-29

    References (7)

  • The Flux-Gradient Relationship of Carbon Dioxide over a Paddy Field  [in Japanese]

    INOHARA Sachiko , IWATA Toru , MIURA Takeshi , OHTOU Akinori , HIGUCHI Yoshihisa , OHTAKI Eiji

    … flux has been measured by the eddy correlation technique at the experimental farm of the Agricultural Faculty, Okayama University, since December in 1998. … The improved aerodynamic technique was developed and used to fill the gap in the eddy flux data. … This technique gave reasonable CO<sub>2</sub> …

    Journal of Agricultural Meteorology 60(3), 215-220, 2004-09-10

    J-STAGE  JASI  References (15)

  • CO(2) Fluxes Measured by Eddy Correlation and Aerodynamic Techniques  [in Japanese]

    猪原 幸子 , 岩田 徹 , 大滝 英治

    … To elucidate the seasonal and inter-annual variation of CO(2) exchanges between the atmosphere and cultivated field in Japan, the CO(2) flux has been measured by the eddy correlation technique at the experimental farm of Agricultural Faculty, Okayama University since December in 1998. … The improved aerodynamic technique was developed and used to cover CO(2) flux data which were not collected. …

    岡山大学環境理工学部研究報告 9(1), 69-73, 2004-02-27

    IR  DOI 

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