検索結果 44928件中 1-20 を表示

  • Nonlinear model analysis of all-optical flip-flop and inverter operations of microring laser

    Kobayashi Naoki , Kawamura Yusaku , Aoki Ryosuke , Kokubun Yasuo

    Numerical simulations indicate that all-optical flip-flop operations and inverter operations can be observed within the same device by controlling the injection current. … The validity of our analysis is confirmed by a comparison of the results for numerical simulations with experimental results of the lasing spectrum. … We believe that the analysis presented in this paper will be useful for the future design of all-optical signal processing devices. …

    Jpn. J. Appl. Phys. 57(3), 032201, 2018-02-06


  • Numerical simulations of magnetic resonance elastography using finite element analysis with a linear heterogeneous viscoelastic model

    Tomita Sunao , Suzuki Hayato , Kajiwara Itsuro , Nakamura Gen , Jiang Yu , Suga Mikio , Obata Takayuki , Tadano Shigeru

    … Because finite element analysis (FEA) of MRE evaluates not only the viscoelastic model for a tissue but also the efficiency of the inversion algorithm, we developed FEA for MRE using commercial software called ANSYS, the Zener model for displacement field of a wave inside tissue, and an inversion algorithm called the modified integral method. …

    Journal of visualization 21(1), 133-145, 2018-02

    機関リポジトリ DOI

  • Assimilating All-Sky Himawari-8 Satellite Infrared Radiances: A Case of Typhoon Soudelor (2015)

    Honda Takumi , Miyoshi Takemasa , Lien Guo-Yuan , Nishizawa Seiya , Yoshida Ryuji , Adachi Sachiho A. , Terasaki Koji , Okamoto Kozo , Tomita Hirofumi , Bessho Kotaro

    … This study aims to assimilate all-sky every-10-min infrared (IR) radiances from Himawari-8 with a regional numerical weather prediction model and to investigate its impact on real-world tropical cyclone (TC) analyses and forecasts for the first time. … The TC intensity forecasts are also improved due to Himawari-8 data because of the improved TC structure analysis. …

    Monthly Weather Review 146(1), 213-229, 2018-01-17

    機関リポジトリ DOI

  • 重合メッシュ法の地下空洞解析への適用性に関する検討

    鈴木 隼人 , 尾留川 剛 , 遊佐 泰紀 , 岡田 裕

    岩盤力学に関するシンポジウム講演論文集 Proceedings of the Symposium on Rock Mechanics 45, 298-302, 2018-01-15

  • 名勝伊江殿内庭園の石積みアーチ橋の静的・動的安定性に関する模型実験および解析的検討

    藍檀 オメル , 渡嘉敷 直彦

    岩盤力学に関するシンポジウム講演論文集 Proceedings of the Symposium on Rock Mechanics 45, 25-30, 2018-01-15


    Dintwe Tumelo , Seiki Takafumi

    岩盤力学に関するシンポジウム講演論文集 Proceedings of the Symposium on Rock Mechanics 45, 1-6, 2018-01-15

  • Label-free photoacoustic imaging of human palmar vessels: a structural morphological analysis

    Matsumoto Y. , Asao Y. , Yoshikawa A. , Sekiguchi H. , Takada M. , Furu M. , Saito S. , Kataoka M. , Abe H. , Yagi T. , Togashi K. , Toi M.

    … The analysis focused on the common and proper palmar digital arteries. … Good agreement was found between the 3D numerical analysis results and the subjective evaluation of the two-dimensional (2D) projection image. … The PAT system enabled visualization of the 3D features of blood vessels in the palm and noninvasive analysis of arterial tortuousness. …

    Scientific Reports 8, 2018-01-15

    機関リポジトリ DOI

  • 数値解析によるMHD発電機のパルス電離支援に対する発電出力の周期構造の関係

    山﨑 洋介 , 高橋 一匡 , 佐々木 徹 , 菊池 崇志 , 原田 信弘

    電気学会論文誌. B, 電力・エネルギー部門誌 = IEEJ transactions on power and energy 138(1), 30-35, 2018-01

  • Numerical Simulation of Particle Trajectories in the Charge-injection Type of Electrostatic Oil Filter

    YANADA Hideki , MATSUURA Shinji , YOKOYAMA Tomohiro , NISHIKAWARA Masahito

    … The numerical results agree qualitatively with the experimental results. … This particle trajectory analysis will be useful for improving the structure of the charge injection type of electrostatic oil filter.</p> …

    JFPS International Journal of Fluid Power System 11(1), 1-8, 2018


  • Cloud Resolving Simulation of a Local Heavy Rainfall Event on 26 August 2011 Observed in TOMACS

    SAITO Kazuo , KUNII Masaru , ARAKI Kentaro

    … In an analysis using geostationary multi-purpose satellite rapid scan images and dense automated weather station networks, development of the MCS occurred after the merging of sea breezes from the east (Kashima-nada) and the south (Tokyo Bay). …

    気象集誌. 第2輯, 2018


  • Comparative Study on Phytochemical Variations in Japanese F<sub>1</sub> Varieties of Bulb Onions and South-East Asian Shallot Landraces

    Aeni Ariyanti Nur , Torikai Kotaro , Kirana Rizky Pasthika , Hirata Sho , Sulistyaningsih Endang , Ito Shin-ichi , Yamauchi Naoki , Kobayashi Nobuo , Shigyo Masayoshi

    … While a principal component analysis (PCA) based on the results from both 2014 and 2015 could clearly discriminate shallots from bulb onions from a phytochemical perspective, bulb onions mainly had higher monosaccharides than shallots. … In most cases, regression analyses using the numerical data of the chemical compounds found in bulb onions and shallots suggested year-year correlations between 2014 and 2015. …

    The Horticulture Journal 87(1), 63-72, 2018


  • 新しい熱伝達モデルを組み込んだ熱流体潤滑モデル

    畠中 清史

    <p>Thermo-hydrodynamic lubrication (THL) models have been applied at the design stage of large-sized high-speed rotary machineries to confirm that the maximum surface temperature of sliding bear …

    トライボロジスト, 2018


  • 津波避難ビルの損傷評価のための有限要素解析手法の構築

    田中 聖三 , 磯部 大吾郎

    地震発生時に励起される可能性のある津波災害は, 沿岸域に多大な人的・物的被害が引き起こされることは記憶に新しい. 津波発生時に沿岸域でとるべき行動は, 原則として高台へ避難することであるが, 高台から遠く離れた平地部においては, 津波避難ビルを建設することで対応がなされている. この津波避難ビルは, 津波波力に対して十分な堅牢性を有し, 想定しうる様々な津波波力に対し設計時に十分検討されている必要 …

    日本計算工学会論文集 2018(2), 20182008-20182008, 2018


  • 斜め平板に衝突する超音速噴流と渦の干渉から生じる音響現象

    今野 千尋 , 寺本 進 , 赤嶺 政仁 , 岡本 光司

    … The numerical result shows three acoustic waves similar to those observed in Akamine et al.'s experiment. …

    日本航空宇宙学会論文集 66(1), 24-30, 2018


  • ベイジアンネットワークによる修学状態推移モデルの構築

    近藤 伸彦 , 畠中 利治

    <p>ラーニングアナリティクスをはじめとした教育データ分析の関連分野が急速な発展を遂げる一方,大学における教育の質保証の観点から教学IR の重要性が認識されてきている.これらの分野が互いに統合され,個に応じた分析と支援が組織的に行われることは今後ますます重要性を増すものと考えられる.本論文ではこの観点から,ラーニングアナリティクス的手法を教学IR や修学支援に活用するフレームワークのひ …

    日本教育工学会論文誌 41(3), 271-281, 2018


  • Comprehensive Analysis of the Impact of TWDP Fading on the Achievable Error Rate Performance of BPSK Signaling

    KIM Donggu , LEE Hoojin , KANG Joonhyuk

    Numerical results clearly demonstrate the accuracy of the derived asymptotic formulas, and also support our proposed criterion.</p> …

    IEICE Transactions on Communications E101.B(2), 500-507, 2018


  • Capsule Antenna Design Based on Transmission Factor through the Human Body

    LI Yang , SATO Hiroyasu , CHEN Qiang

    … <p>To design antennas for ingestible capsule endoscope systems, the transmission factors of dipole and loop antennas placed in the torso-shaped phantom filled with deionized water or human body equivalent liquid (HBEL) are investigated by numerical and experimental study. … Good agreement of S-parameters between measured results and numerical analysis is observed and the transmission factors for both cases are obtained. …

    IEICE Transactions on Communications E101.B(2), 357-363, 2018


  • 竜巻接近時の建屋内気圧変化の評価について

    清水 純太郎 , 秋野 恭平 , 大坪 俊介

    … This study introduces the numerical calculation code "TAIPEC", based on Bernoulli's theorem and the state equation of air, which was developed to analyze the inner pressure change and air flow rate through an opening of a building due to a pressure difference caused by APC. …

    日本原子力学会和文論文誌, 2018


  • Full-Duplex Cooperative Cognitive Radio Networks with Simultaneous Transmit and Receive Antennas in MIMO Channels

    PARK Sangwoo , SONG Iickho , LEE Seungwon , YOON Seokho

    … It is shown through numerical analysis that the proposed FD MIMO-CCRN framework can provide a considerable performance gain over the conventional frameworks of CCRN and MIMO-CCRN.</p> …

    IEICE Transactions on Communications, 2018


  • Modified method of detecting dynamic buckling

    ARITA Shoko , MIYAZAKI Yasuyuki

    … However, there was no general numerical method to evaluate the reliability efficiently and quantitatively, not estimating any errors. … Therefore, the authors proposed an original numerical method to evaluate quantitatively the reliability of the deployment by detecting buckling in a dynamic analysis of FEM in 2016. … The conventional method to detect the buckling in the dynamic analysis uses mode orthogonality to the rigid-body modal space and the eigenvalue. …

    Mechanical Engineering Letters 4(0), 17-00441-17-00441, 2018