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Browsing 学術雑誌論文 / Journal Article by Title

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  • Kodama, Toshiyuki; Tomita, Satoshi; Hosoito, Nobuyoshi; Yanagi, Hisao (SpringerNature, 2016-01-06)
    We have succeeded in fabricating arrays of micrometer-sized, three-dimensional chiral meta-molecule (CMM) of cobalt (Co) by using a strain-driven self-coiling technique. In the arrays, the Co CMMs were fixed on a silicon ...
  • Kuzuhara, Daiki; Miyake, Satoshi; Moriyama, Hirotake; Tamura, Yuto; Aratani, Naoki; Yamada, Hiroko (Elsevier, 2015-10-07)
    The new synthetic method of indolizino[3,4,5-ab]isoindoles (INIs) by an acid-induced intramolecular cyclization of 1,2-di(1H-pyrrol-2-yl)benzenes has been developed. This protocol can be applied to the preparation of INI ...
  • Keiichi Osako; Yoshimitsu Mori; Yu Takahashi; Hiroshi Saruwatari; Kiyohiro Shikano (電子情報通信学会, 2008-06)
    We propose a new algorithm for the blind source separation (BSS) approach in which independent component analysis (ICA) and frequency subband beamforming interpolation are combined. The slow convergence of the optimization ...
  • Kentaro Tachibana; Yu Takahashi; Yoshimitsu Mori; Hiroshi Saruwatari; Kiyohiro Shikano; Akira Tanaka (信号処理学会, 2008-07)
    大きな残響のある条件でのブラインド信号分離(BSS)の問題を扱った。一般的に,二次独立成分分析(ICA)や高次ICAのような,ほとんど全てのICAアルゴリズムは開形式,すなわち逐次最適化により行われ,実時間処理には適用できない。最近,著者ら一人が閉形式二次ICAを求め,それにより著者らは閉形式ICAの後に開形式高次ICAを行う効率的なBSSの方法を提案した。本論文では,適切なコスト関数に基づいた高次ICAに対する最適化周波数サブバンドの ...
  • Hiroshi Saruwatari; Toshiya Kawamura; Tsuyoki Nishikawa; Kiyohiro Shikano (電子情報通信学会, 2003-03)
    We propose a now algorithm for blind source separation (BSS), in which independent component analysis (ICA) and bram forming arc combined to resolve the lowconvergence problem through optimization in ICA. The proposed ...
  • 亀井, 靖高; 柗本, 真佑; 柿元, 健; 門田, 暁人; 松本, 健一 (情報処理学会, 2007-08-15)
    Fault-prone モジュール(バグを含みやすいモジュール)判別モデルの性能向上を目的として,サンプリング法(オーバ/アンダサンプリング)適用の効果を実験的に評価する.サンプリング法は,2群の判別モデル構築に用いるフィットデータに対する前処理であり,2 群のケース数の偏りを解消することにより,少数派の群の判別精度の向上が期待される.ただし,従来,ソフトウェア工学分野への適用事例は報告されていない.実験では,日本のある企業で開発された ...
  • 柗本, 真佑; 亀井, 靖高; 門田, 暁人; 松本, 健一 (情報処理学会, 2008-03-15)
    本論文では,fault-prone モジュール判別モデルの構築における課題の1 つである,データセット中の外れ値(特異なモジュール)による判別性能の低下を改善することを目的とする.そのために,1つの母集団に対する代表的な外れ値除去法であるMahalanobis Outlier Analysis(MOA)とLocal Outlier Factor Method(LOFM)を2 クラス(fault あり/なし)の判別に拡張した手法と,2 ...
  • 柿元, 健; 門田, 暁人; 亀井, 靖高; 柗本, 真佑; 松本, 健一; 楠本, 真二 (情報処理学会, 2009-07-15)
    ソフトウェアの信頼性確保を目的として,faultの有無を推定するモデル(faultproneモジュール判別モデル)が数多く提案されている.しかし,どのようにテスト工数を割り当てるのかといったfault-proneモジュール判別モデルの判別結果の利用方法についての議論はほとんどされておらず,信頼性確保の効果は不明確であった.そこで,本論文では,faultの有無の判別,テスト工数の割当て,ソフトウェア信頼性の関係のモデル化を行い,TEAR(Test ...
  • yokogawa, Tomoyuki; Tsuchiya, Tatsuhiro; Nakamura, Masahide; Kikuno, Tohru (電子情報通信学会, 2003-12-01)
    Feature interaction is the term used in telephony systems to refer to inconsistent conflict between multiple communication services. Feature interaction is considered a major obstacle to developing reliable telephony systems ...
  • Arima, Satoshi; Tachibana, Takuji; Kaji, Yuichi; Kasahara, Shoji (Institute of Electronics, Information and Communication Engineers, 2007-12-01)
    In this paper, we consider consecutive burst transmission with burst loss recovery based on Forward Error Correction (FEC) in which redundant data is transmitted with multiple bursts. We propose two burst generation methods: ...
  • Kodama, Toshiyuki; Tomita, Satoshi; Kato, Takeshi; Oshima, Daiki; Iwata, Satoshi; Okamoto, Satoshi; Kikuchi, Nobuaki; Kitakami, Osamu; Hosoito, Nobuyoshi; Yanagi, Hisao (American Physical Society, 2016-08-24)
    We investigate the ferromagnetic resonance (FMR) of a single chiral structure of a ferromagnetic metal—the magnetochiral (MCh) metamolecule. Using a strain-driven self-coiling technique, micrometer-sized MCh metamolecules ...
  • Yamaguchi, Nobutoshi; Huang, Jiangbo; Xu, Yifeng; Tanoi, Keitaro; Ito, Toshiro (Springer Nature, 2017-10-24)
    To ensure successful plant reproduction and crop production, the spatial and temporal control of the termination of the floral meristem must be coordinated. In Arabidopsis, the timing of this termination is determined by ...
  • Watanabe, Junji; Kamee, Hiroyuki; Fujiki, Michiya (高分子学会, 2001)
  • Kuzuhara, Daiki; Yamada, Hiroko; Yano, Keiko; Okujima, Tetsuo; Mori, Shigeki; Uno, Hidemitsu (WILEY-VCH Verlag, 2011-02-21)
    The synthesis of dodecasubstituted porphycenes has not been reported, to date. Herein, the preparation of tetramethyloctaethylporphycene by a McMurry-type coupling of 3,3′,4,4′-tetraethyl-5,5′-diformyl-2,2′-bipyrrole was ...
  • Yamanaka, Masaru; Hoshizumi, Makoto; Nagao, Satoshi; Nakayama, Ryoko; Shibata, Naoki; Higuchi, Yoshiki; Hirota, Shun (John Wiley & Sons, Inc., 2017-02-14)
    The number of artificial protein supramolecules has been increasing; however, control of protein oligomer formation remains challenging. Cytochrome c′ from Allochromatium vinosum (AVCP) is a homodimeric protein in its ...
  • 橘, 達弘; 村田, 佳洋; 柴田, 直樹; 安本, 慶一; 伊藤, 実 (一般社団法人電子情報通信学会, 2006-06-01)
    遺伝的アルゴリズム(GA)は様々なアプリケーションに用いることができる.GAを用いたアプリケーションは,ハードウェア上に実装することで,安価で資源の少ない情報機器上で利用することができる.本論文では,適用する問題や利用可能な回路規模に従って,実行効率の良いGA回路を合成するためのアーキテクチャを提案し,またこのアーキテクチャに従って実装される回路の規模予測モデルを提案する.本アーキテクチャ及び回路規模予測モデルを用いて,指定するFPGA ...
  • Okura, Fumio; Ueda, Yuko; Sato, Tomokazu; Yokoya, Naokazu (社団法人映像情報メディア学会, 2014-01-01)
    This paper proposes a free-viewpoint interface for mobile-robot teleoperation, which provides viewpoints that are freely configurable by the human operator head pose. The viewpoints are acquired by a head tracker equipped ...
  • Kawajiri, Kazuki; Kawanoue, Takahiro; Yamato, Masaki; Terai, Kengo; Yamashita, Masataka; Furukawa, Mari; Aratani, Naoki; Suzuki, Mitsuharu; Nakayama, Ken-ichi; Yamada, Hiroko (ECS, 2017-01-01)
    The active layer of organic photovoltaic cells (OPVs) is typically a blend of p- and n-type semiconductors, and the arrangement of these materials largely affects the device performance. We have recently proposed a unique ...
  • Tamura, Yuto; Kuzuhara, Daiki; Suzuki, Mitsuharu; Hayashi, Hironobu; Aratani, Naoki; Yamada, Hiroko (The Royal Society of Chemistry, 2016-09-22)
    Solution processing of a layer-by-layer structure is possible with a precursor approach, in which the soluble precursors of the insoluble or low-solubility target materials are spin-coated on the substrate and converted ...
  • Kubo, Ken-ichi; Paape, Timothy; Hatakeyama, Masaomi; Entani, Tetsuyuki; Takara, Akie; Kajihara, Kie; Tsukahara, Mai; Shimizu-Inatsugi, Rie; Shimizu, Kentaro K.; Takayama, Seiji (Nature Publishing Group, 2015-01-08)
    Self-incompatibility (SI) systems in flowering plants distinguish self- and non-self pollen to prevent inbreeding. While other SI systems rely on the self-recognition between specific male- and female-determinants, the ...

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