Search Results 1-20 of 19787

  • Genetic Algorithm Based Automatic Input Parameter Calibration Method for the Discrete Element Modeling of Vibration Feeders

    Katagiri Jun , Ueda Takao , Hayashi Naohito , Koyanaka Shigeki

    Materials transactions 62(4), 551-556, 2021-04

  • How to Test Middleware with Coverage-based Greybox Fuzzing  [in Japanese]

    伊藤 弘将 , 松原 豊 , 高田 広章

    近年,自動ソフトウェアテスト手法の一種であるfuzzingが注目されており,その効果や効率を向上させるための研究が数多く発表されている.しかし,多くの既存研究では,比較的シンプルなベンチマークを対象に,単一のインタフェースに対し単一の入力を与えた際の探索結果により,評価が行われている.これらのベンチマークとは異なる,より複雑なソフトウェアを対象とした場合,効果的にfuzzingを行うための研究は, …

    情報処理学会論文誌 62(3), 877-890, 2021-03-15

    IPSJ 

  • Generating Adversarial Examples for Hardware-Trojan Detection at Gate-Level Netlists

    Kohei Nozawa , Kento Hasegawa , Seira Hidano , Shinsaku Kiyomoto , Kazuo Hashimoto , Nozomu Togawa

    … However, a weakness of such a machine-learning-based classification method against adversarial examples (AEs) has been reported, which causes misclassification by adding perturbation in input samples. … However, a weakness of such a machine-learning-based classification method against adversarial examples (AEs) has been reported, which causes misclassification by adding perturbation in input samples. …

    情報処理学会論文誌 62(3), 2021-03-15

    IPSJ 

  • Generating and Evaluating Animation Images of Plants and with GUI Based on Point Input and Feature Interpolation Using Deep Learning  [in Japanese]

    山下 祐貴 , 森本 有紀

    … In conventional image generation by deep learning, a rough input may be difficult because an input image for generation and an output image need to correspond one-to-one for each pixel. … In addition, a large amount of input data is required to generate an animation. …

    芸術工学研究 (34), 11-18, 2021-03-10

    IR  DOI 

  • Real-time Rendering of Shadow Shapes Peculiar to Character Illustrations for Clothes Wrinkles  [in Japanese]

    青木 明優花 , 阿部 雅樹 , 渡辺 大地

    近年,コンピュータを用いてイラストを描く人が増加しており,ツールの機能向上と描画手法の発展からクオリティの高いイラストを仕上げることができるようになった.イラストのクオリティを上げる重要なポイントはいくつかあるが,そのポイントの1つに陰影がある.人物の姿勢や衣服の凹凸をふまえた陰影描写には独特の法則がある.キャラクタの陰影付けでは,様々なパーツに対して陰影付けを行うが,その中でも衣服は大部分を占め …

    情報処理学会論文誌デジタルコンテンツ(DCON) 9(1), 1-10, 2021-02-26

    IPSJ 

  • User-defined Gesture for Mobile Device Control with Ski Poles  [in Japanese]

    岡田 友哉 , 坂本 大介 , 小野 哲雄

    本研究ではアウトドアアクティビティとしてのスキーに注目し,スキーポールを入力デバイスとしたジェスチャ入力手法を提案する.まず,複数人のスキー経験者にモバイルデバイス操作に適したジェスチャを考案してもらうことでユーザ定義型ジェスチャを設計した.設計したジェスチャの認識を行うため,ポールのグリップ部分の下に加速度,ジャイロセンサを装着し,そこから得られるセンサデータを利用するジェスチャ認識器を畳み込み …

    情報処理学会論文誌 62(2), 654-666, 2021-02-15

    IPSJ 

  • PhKey: An Input Interface for Wearable Devices Using Phalanges as Keys  [in Japanese]

    中村 喜宏 , 酒井 拓武 , 矢崎 晃平

    近年,スマートウォッチやスマートグラスといったウェアラブル機器が注目されている.しかし,これらは画面が極端に小さいことや,様々なシーンや姿勢での使用が想定されるため入力装置をつねに把持したり注視したりできない場合があるなどの理由から,快適な入力性能の実現が難しかった.そこで我々は片手の12個の指節をキーとして利用し,もう一方の手の3指でタップ入力する方式PhKeyを提案する.指節は入力範囲の区切り …

    情報処理学会論文誌 62(2), 701-712, 2021-02-15

    IPSJ 

  • The switching mechanisms of social network densification

    Kobayashi Teruyoshi , Genois Mathieu

    … Here, we develop a Bayesian statistical method to identify the extent to which each of these mechanisms is at play at a given point in time, taking the mixed densification scaling as input. … We apply the method to networks of face-to-face interactions of individuals and reveal that the main mechanism that causes densification and sparsification occasionally switches, the frequency of which depending on the social context. …

    Scientific Reports 11(1), 3160, 2021-02-04

    IR 

  • A Parameter Identification Method for Single-Input and Single-Output Linear Systems with Colored Noises Using Noise Gain Function  [in Japanese]

    小松 信雄

    システム制御情報学会論文誌 = Transactions of the Institute of Systems, Control and Information Engineers 34(2), 29-36, 2021-02

  • Nano-carbon fiber synthesized in waste plastic gasification process and application as composite material(Papers)

    Takashi Amemiya , Ryuta Ohki , Junpei Honma

    … This paper reported a method to create carbon nano-fiber, a type of NC, by the pyrolysis gasification combined with a CVD nanocarbon generation process using pelletized polypropylene (PP) which simulates waste plastics as an input raw material. … This study also evaluated the mixing effect of fluid catalytic cracking (FCC) catalyst in the input plastic. …

    日本工業大学研究報告 = Report of researches, Nippon Institute of Technology 50(3), 62-67, 2021-02

    IR 

  • Bounding linear rainfall-runoff models with fractional derivatives applied to a barren catchment of the Jordan Rift Valley

    Unami Koichi , Fadhil Rasha M , Mohawesh Osama

    … Firstly, a pair of linear autoregressive models with exogenous input (ARX models) is identified to tightly bound each runoff time series using the simplex method of linear programming. … The exogenous input part is compatible with the conventional unit hydrograph method, while the autoregressive part is regarded as a discretized differential operator of fractional orders. …

    Journal of Hydrology (593), 2021-02

    IR 

  • Development of an Eye-Gaze Input System With High Speed and Accuracy through Target Prediction Based on Homing Eye Movements

    Murata Atsuo , Doi Toshihisa , Kageyama Kazushi , Karwowski Waldemar

    … In this study, a method to predict a target on the basis of the trajectory of eye movements and to increase the pointing speed while maintaining high predictive accuracy is proposed. … First, a predictive method based on ballistic (fast) eye movements (Approach 1) was evaluated in terms of pointing speed and predictive accuracy. …

    IEEE Access (9), 22688-22697, 2021-01-29

    IR 

  • Packrat Parsers Can Support Multiple Left-recursive Calls at the Same Position

    Masaki Umeda , Atusi Maeda

    … One of the common problems with the recursive descent parsing method is that when parsing with a left-recursive grammar, the parsing does not terminate because the same parsing function is recursively invoked indefinitely without consuming the input string. … Packrat parsing, which is a variant of recursive descent parsing method that handles grammars described in parsing expression grammars (PEGs) by backtracking, is also affected by the above problem. …

    情報処理学会論文誌プログラミング(PRO) 14(1), 2021-01-27

    IPSJ 

  • A Method for Validating Binary Optimizers

    Motohiro Kawahito , Reid Copeland , Toshihiko Koju , David Siegwart , Moriyoshi Ohara

    … In this presentation, we propose a method for validating binary optimizers. … It executes the target code and its optimized code with several input data during binary optimization. … Our approach can be used to test multiple input data not included in the target code, which is the most beneficial aspect of the approach. … If the results differ, we can use the input code for the final output code to maintain compatibility. …

    情報処理学会論文誌プログラミング(PRO) 14(1), 15-15, 2021-01-27

    IPSJ 

  • T1-weighted and T2-weighted MRI image synthesis with convolutional generative adversarial networks

    Kawahara Daisuke , Nagata Yasushi

    … Background: The objective of this study was to propose an optimal input image quality for a conditional generative adversarial network (GAN) in T1-weighted and T2-weighted magnetic resonance imaging (MRI) images.Materials and methods: A total of 2,024 images scanned from 2017 to 2018 in 104 patients were used. … Two image sizes (512 × 512 and 256 × 256) and two grayscale level conversion method (simple and adaptive) were used for the input images. …

    Reports of Practical Oncology and Radiotherapy 26(1), 35-42, 2021-01-22

    IR 

  • Control method to reduce capacitor current stress and voltage fluctuation of a motor drive system using dual inverter  [in Japanese]

    奥村 廉 , 芳賀 仁

    電気学会研究会資料. SPC = The papers of technical meeting on semiconductor power converter, IEE Japan 2021(15-19・21・22・24-28), 21-26, 2021-01-21

  • Control method to reduce capacitor current stress and voltage fluctuation of a motor drive system using dual inverter  [in Japanese]

    奥村 廉 , 芳賀 仁

    電気学会研究会資料. MD 2021(15-19・21・22・24-28), 21-26, 2021-01-21

  • Proposal and its Evaluation of Deep Learning Model for Human Detection Task in a Single LRF Environment  [in Japanese]

    小原 裕輝 , 中沢 実

    単体のレーザレンジファインダ(LRF)を用いた人の検出手法は,貨物運搬ロボットなどに使われる.これらの検出では,入力が検出対象であるかどうかの判定に,hand-crafted特徴量と正であるか偽であるか分類する1クラス分類モデルを使用した手法が適用されている.本論文では,1クラス分類モデルへの入力をhand-crafted特徴量ではなく,深層学習モデルによって生成された特徴量に置き換えた手法を提案 …

    情報処理学会論文誌 62(1), 246-253, 2021-01-15

    IPSJ 

  • An End-to-End BLE Indoor Localization Method Using LSTM

    Kenta Urano , Kei Hiroi , Takuro Yonezawa , Nobuo Kawaguchi

    … This paper proposes an indoor localization method for Bluetooth Low Energy (BLE) devices using an end-to-end LSTM neural network. … Our proposed method adopts end-to-end localization, which means input is a time-series of signal strength and output is the estimated location at the latest time in the input. … The neural network in our proposed method consists of fully-connected and LSTM layers. …

    情報処理学会論文誌 62(1), 2021-01-15

    IPSJ 

  • Point-of-Interest Search Considering Popularity based on Social Network Services and Population Statistics  [in Japanese]

    川崎 仁嗣 , 深澤 佑介 , 豊田 正史

    Point-of-Interest(POI)の検索は,地図やカーナビアプリでの目的地検索だけでなく,場所に対するチェックインや写真へのジオタグ付けなど様々な用途で利用されている.POI検索では施設名称や施設ジャンルを検索クエリとして利用することも多いが,同一の施設名称であるPOIが存在したり,有名な施設とそうではない施設が混ざって表示されたりすると本来意図するPOIを探し出す際のユーザ体験に悪影響 …

    情報処理学会論文誌 62(1), 263-274, 2021-01-15

    IPSJ 

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