検索結果 2678件中 1-20 を表示

  • Multipole modes of excitation in triaxially deformed superfluid nuclei

    Washiyama Kouhei , Nakatsukasa Takashi

    … We construct a computational code of FAM-QRPA in the three-dimensional Cartesian coordinate space to handle triaxially deformed superfluid nuclei.Results: We validate our new code by comparing our results with former QRPA calculations for axially symmetric nuclei. …

    Physical review C 96(4), 41304, 2017-10

    機関リポジトリ DOI

  • Low-Cost and Steady On-Line Retraining of MLP with Guide Data

    Yuya Kaneda , Qiangfu Zhao , Yong Liu

    … To upgrade performance of DBM-initialized models, we may use all observed data to retrain the model, but the computational cost is high. … To reduce the cost, we may use the newly observed datum only, but this often degrades the performance of the model. …

    情報処理学会論文誌 58(8), 2017-08-15


  • CONeP: A cost-effective online nesting procedure for regional atmospheric models

    Yoshida Ryuji , Nishizawa Seiya , Yashiro Hisashi , Adachi Sachiho A. , Sato Yousuke , Tomita Hirofumi

    … We propose a cost-effective online nesting procedure (CONeP) for regional atmospheric models to improve computational efficiency. … The conventional procedure of online nesting is ineffective because computations are executed sequentially for each domain, and it does not enable users freely to determine the number of computational nodes. …

    Parallel Computing 65, 21-31, 2017-07

    機関リポジトリ DOI

  • Computational cost reduction by avoiding ray-linking iteration in bent-ray method for sound speed image reconstruction in ultrasound computed tomography

    Qu Xiaolei , Azuma Takashi , Lin Hongxiang , Nakamura Hirofumi , Tamano Satoshi , Takagi Shu , Umemura Shin-ichiro , Sakuma Ichiro , Matsumoto Yoichiro

    Bent-ray reconstruction method can improve sound speed image quality, compared with straight-ray reconstruction. However, it suffers from time-consuming ray-linking iteration, because multiple rays wi …

    Jpn. J. Appl. Phys. 56(7S1), 07JF14, 2017-06-14


  • POD & MLSM Application on DU96-W180 Wind Turbine Airfoil

    Halawa Amr M. , Elhadidi Basman , Yoshida Shigeo

    … namely Proper Orthogonal Decomposition (POD) was applied in conjunction with the Modified Linear Stochastic Measurement (MLSM) to achieve a reduced order model with high accuracy and low computational cost. … This application is important in reducing the computational time from several hours to just few seconds for applications involving recursive solution of the Navier-Stokes equations. …

    Evergreen : joint journal of Novel Carbon Resource Sciences & Green Asia Strategy 4(1), 36-43, 2017-03


  • モバイルセンサデータベースにおける効率的なTop-k検索結果の多様化手法

    横山 正浩 , 原 隆浩

    … In this case, the computational cost of a naive method is excessively high when the amount of mobile sensor data is very large. … Experimental results show that our proposed method involves short computation time and reduces the disk IO cost. …

    情報処理学会論文誌 58(2), 481-494, 2017-02-15


  • Sponsored Search Auction Considering Combinational Bids with Externalities

    IMADA Ryusuke , FUJITA Katsuhide

    … However, the externalities which give effects to CTR and haven't been considered in some existing works because the mechanism with externalities has high computational cost. … Moreover, we prove the computational complexity and the monotonicity of the proposed mechanism, and demonstrate computational costs and efficiency ratios by changing the number of ads, slots and maximum bids. …

    IEICE Transactions on Information and Systems E100.D(12), 2906-2914, 2017


  • Color-Based Cooperative Cache and Its Routing Scheme for Telco-CDNs

    NAKAJIMA Takuma , YOSHIMI Masato , WU Celimuge , YOSHINAGA Tsutomu

    … Although such technique could reduce the generated traffic between servers, it comes with the cost of a large computational overhead. … Evaluation results, using a backbone network topology, showed that our color-tag based caching scheme could achieve a performance close to the sub-optimal one obtained with a genetic algorithm calculation, with only a few seconds of computational overhead. …

    IEICE Transactions on Information and Systems E100.D(12), 2847-2856, 2017


  • Low Cost and Fault Tolerant Parallel Computing Using Stochastic Two-Dimensional Finite State Machine

    WANG Xuechun , JI Yuan , CHEN Wendong , RAN Feng , GUO Aiying

    … <p>Hardware implementation of neural networks usually have high computational complexity that increase exponentially with the size of a circuit, leading to more uncertain and unreliable circuit performance. …

    IEICE Transactions on Information and Systems E100.D(12), 2866-2870, 2017


  • 高解像RCM実験情報を活用した統計的ダウンスケーリングの試み

    若月 泰孝

    気候変化の不確実性をカバーするために必要な複数の超高解像気候情報を創出するために,統計的ダウンスケーリング法が開発された.その方法では,膨大な計算資源を使う1回の超高解像領域気候実験を実施し,その情報を統計モデル作成に利用する.そのモデルでは,空間内挿(SI)とバイアス補正(BC)が実施される.統計量に対する補正(差や比)が,一般化線形モデルなどを用いてモデル化された.このSI-BCモデルは,関東 …

    水文・水資源学会研究発表会要旨集 30(0), 67, 2017


  • 転移学習を利用したファッション購買とアンケートデータからの幸福度の推定

    森田 裕之 , 白井 康之 , 後藤 裕介

    近年、様々なビッグデータの収集が、容易かつ安価になってきているが、購買履歴データと消費者の意識や購買の影響を調査したデータを組み合わせて取得することは、コスト面の課題も大きく、実現が困難である。一方、一部の顧客のみに限定した購買履歴と顧客意識に関するアンケートデータが存在することも多い。<br> 本稿では、このようなあるショッピングサイトの購買履歴データと、一部の顧客についてのみ存在す …

    経営情報学会 全国研究発表大会要旨集 2017f(0), 10-13, 2017


  • 深層強化学習による施工機械の知能化

    中谷 優之 , 孫 澤源 , 内村 裕

    … Also, deep reinforcement learning comes with a prohibitive computational cost to finish the learning in some learning environment. …

    ロボティクス・メカトロニクス講演会講演概要集 2017(0), 2P2-G03, 2017


  • 自己組織化マップを用いた人工生物の評価値推定手法の提案

    大西 涼介 , 岩館 健司 , 鈴木 育男 , 渡辺 美知子

    … Our proposed method by using the evolutionary computation has the problem that computational cost is increased. … As the results of the computational experiments, it was verified that our proposed method is able to classify the type of the robot's morphology.</p> …

    ロボティクス・メカトロニクス講演会講演概要集 2017(0), 2P1-H01, 2017


  • Convex Filter Networks Based on Morphological Filters and their Application to Image Noise and Mask Removal

    NAKASHIZUKA Makoto , KOBAYASHI Kei-ichiro , ISHIKAWA Toru , ITOI Kiyoaki

    … The examples of noise and mask removal show that the convex-concave filter can obtain a recovered image, whose quality is comparable to inpainting by using the total variation minimization with reduced computational cost without mask information of the corrupted pixels.</p> …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E100.A(11), 2238-2247, 2017


  • A Reduced Transport Model for Ion Heat Diffusivity by Gyro-Kinetic Analysis with Kinetic Electrons in Helical Plasmas

    TODA Shinichiro , NAKATA Motoki , NUNAMI Masanori , ISHIZAWA Akihiro , WATANABE Tomo-Hiko , SUGAMA Hideo

    … To reduce the computational cost for applying to the dynamical transport simulation, an extended transport model for the ion heat diffusivity in terms of the mixing length estimate and the characteristic quantity for the linear response of zonal flows is proposed.</p> …

    Plasma and Fusion Research 12(0), 1303035-1303035, 2017


  • 時間構造化ネットワーク上の確率的交通配分

    大山 雄己 , 羽藤 英二

     マルコフ連鎖配分(MCA)はその操作性の高さから近年再び注目を集めているものの,1)過大なサイクリックフロー,2)ネットワーク条件に依存する計算不可能性,3)IIA 特性の増幅という課題を残すことが知られている.本研究では上記の課題を解決するローディングアルゴリズムとして,時間構造化ネットワーク上の交通配分(TSA)手法を提案する.時間制約パラメータとネットワークの構造化手法の導入により,経路選 …

    土木学会論文集D3(土木計画学) 73(4), 186-200, 2017


  • 高圧力下における珪酸塩融体の大規模・非経験的分子動力学シミュレーションの必要性

    則竹 史哉

    … However, the strong finite size effect does not allow the application of first-principles molecular dynamics simulations because of its heavy calculation cost, because the system composed of at least 10<sup>4</sup> …

    高圧力の科学と技術 27(3), 198-204, 2017


  • rPM6 Parameters for Manganese and Application to Transition State Search for Oxidation Reactions of Cyclohexene by Manganese(IV)-Oxo Species

    Saito Toru , Takano Yu

    … The spin-unrestricted calculations with the resultant parameter sets (UrPM6) successfully provide acceptable TS structures similar to the UDFT-optimized geometries at much lower computational cost. … Our method will lead to substantial savings of computational time spent in the TS search for transition-metal-containing species.</p> …

    Chemistry Letters 46(10), 1567-1569, 2017


  • Efficient Similarity Search with a Pivot-Based Complete Binary Tree

    YAMAGISHI Yuki , AOYAMA Kazuo , SAITO Kazumi , IKEDA Tetsuo

    … Experimental results on one million real image data set with high dimensionality demonstrate that the proposed method finds an exact solution for a range query at around one-quarter to half of the computational cost of one of the state-of-the-art methods, by using a CBT index constructed off-line at a reasonable computational cost.</p> …

    IEICE Transactions on Information and Systems E100.D(10), 2526-2536, 2017


  • 反復構造を持つ高分子に対する分子動力学計算のためのパラメータ設定支援プログラムo2pの開発

    矢部 誠 , 園部 智彩 , 上田 一義 , 武田 穣

    <p>Molecular dynamics (MD)の実行に必須の結合角や電荷などのパラメータセット(力場)がライブラリに存在しない場合,力場の量子力学計算による算出やパラメータ自動生成ツールの活用という手法が用いられる.しかし,これらの手法は原子数の多い高分子の場合には適していない.そこで,3つの単位構造(両末端の単位と中央部の繰り返し単位)を含むオリゴマーの力場を …

    Journal of Computer Chemistry, Japan 16(3), 63-69, 2017