Search Results 1-20 of 4036

  • Real-Time acoustic emission monitoring of wear-out failure in sic power electronic devices during power cycling tests

    Choe Chanyang , Chen Chuantong , Nagao Shijo , Suganuma Katsuaki

    … Suganuma, "Real-Time Acoustic Emission Monitoring of Wear-Out Failure in SiC Power Electronic Devices During Power Cycling Tests," in IEEE Transactions on Power Electronics, vol. 36, no. 4, pp. … After eliminating background AE noise including the power on-off switch and the ambient noise via a noise filtering process, AE signals were successfully collected for the SiC devices during a power cycling test. …

    IEEE Transactions on Power Electronics 36(4), 4420-4428, 2021-04-01


  • HeteroTSDB: A High Performance Time Series Database for Automated Data Tiering in Heterogeneous Distributed KVSs  [in Japanese]

    坪内 佑樹 , 脇坂 朝人 , 濱田 健 , 松木 雅幸 , 小林 隆浩 , 阿部 博 , 松本 亮介

    クラウド上のシステムの大規模化にともない,CPU利用率などのシステムの各構成要素の状態を把握するために,大量の時系列データを保存する必要がある.そのために,時系列データを保存するデータベースにはデータの挿入処理とデータ保存の効率化と挿入スケールアウト性の向上が求められる.既存技術は,挿入スケールアウト性を高めるために広く利用されているディスクベースの分散KVS(Key Value Store)を利 …

    情報処理学会論文誌 62(3), 818-828, 2021-03-15


  • In-process monitoring of laser welding using deep learning  [in Japanese]

    鷲谷 泰佑 , 坂井 哲男 , 塩見 康友

    画像ラボ 32(2), 1-6, 2021-02

  • Monitoring of Crystallization Process in Solution-Processed Pentacene Thin Films by Chemical Conversion Reactions  [in Japanese]

    Shioya Nobutaka , Fujiwara Ryoi , Tomita Kazutaka , Shimoaka Takafumi , Okudaira K. Koji , Yoshida Hiroyuki , Koganezawa Tomoyuki , Hasegawa Takeshi

    … The overall process of the thin film growth, however, remains unrevealed. … The highlight is that pentacene is crystallized in a stepwise manner in the thermally converted films, which is substantially different from a typical growth process. …

    The Journal of Physical Chemistry C 125(4), 2437-2445, 2021-01-10


  • Example of Monitoring in Cutting Process with a Multifunctional Wireless Communication Tool Holder System  [in Japanese]

    松田 亮 , 村上 浩二

    自動車技術 = Journal of Society of Automotive Engineers of Japan 75(1), 67-73, 2021-01

  • Real-Time Monitoring of Yogurt Fermentation Process by Aquaphotomics Near-Infrared Spectroscopy

    Muncan Jelena , Tei Kyoko , Tsenkova Roumiana

    … At present, monitoring of yogurt production is performed by sampling for microbiological and physicochemical measurements. … The results proved that NIRS is a valuable tool for real-time monitoring and better understanding of the yogurt fermentation process. …

    Sensors 21(1), 177, 2021-01


  • Temperature monitoring with a high-speed camera based on two color method and its CFD analysis in Cu direct laser drilling of printed circuit board  [in Japanese]

    HIROGAKI Toshiki , AOYAMA Eiichi , YAMAGUCHI Ryouta , NAKAGAWA Wataru

    … <p>In the present report, we attempt to monitor the temperature of Cu direct laser drilling process of multi-layer printed circuit board with a high speed camera based on two color method and to construct a model of its process with a CFD (computational fluid dynamics). … First, we estimate the temperature distribution at the time line of process including the penetration of Cu layer on the surface and the cooling of drilled hole wall after laser drilling. …

    Transactions of the JSME (in Japanese), 2021


  • Identification of Cracking Issues and Process Improvements through Plant Monitoring and Numerical Modelling of Secondary Cooling during Continuous Casting of HSLA Steels

    Pineda Huitron Rosa Maria , Ramirez Lopez Pavel Ernesto , Vuorinen Esa , Nazem Jalali Pooria , Kärkkäinen Maija

    … The approach consisted on plant monitoring, including direct temperature measurements in the strand with pyrometers. … The models presented are an ideal toolkit to analyse the influence of product size and operation parameters in combination with plant monitoring and extensive microstructure characterization to improve the quality and productivity of the process.</p> …

    ISIJ International 61(3), 834-843, 2021



    KUBOTA Yasuyuki , NISHIYAMA Satoshi , YABUKI Nobuyoshi , FUKUDA Tomohiro , TEDUKA Hitoshi , OBATA Hiroshi , MURAKAMI Osamu

    <p> トンネル工事での肌落ち災害を防止するため,作業中は切羽の状態を常時継続的に監視する必要がある.切羽での大規模な崩壊の予兆として,崩壊までの時間に差はあるものの小規模な落石が見られる場合があるが,目視では落石の確認が困難であるため,大規模崩壊に巻き込まれ,重大災害に繋がる可能性がある.そこで,筆者らはAIにより切羽のみに解析範囲を制限し,背景差分法を軸に面的に落石を検出するシステ …

    Journal of Japan Society of Civil Engineers, Ser. F3 (Civil Engineering Informatics) 77(2), I_77-I_88, 2021


  • Risk Factor for Additional Intravenous Medication during Transforaminal Full-endoscopic Lumbar Discectomy under Local Anesthesia

    YAMAYA Seiji , MAEDA Toru , SAIRYO Koichi , TEZUKA Fumitake , SUGIURA Kosuke , TAKEUCHI Makoto , MANABE Hiroaki , MORIMOTO Masatoshi , YAMASHITA Kazuta , TAKATA Yoichiro , SAKAI Toshinori

    … were retrospectively evaluated in 113 consecutive patients who underwent TELD under local anesthesia at our institution: demographic characteristics, radiological features at the intervertebral disc level, distance between the superior articular process and the exiting nerve root, height of the intervertebral disc, height of the bulging disc, height of the intervertebral foramen, and distance from the insertion site to the spinous process on magnetic resonance imaging (MRI) and computed tomography (CT) scans of the lumbar …

    Neurologia medico-chirurgica 61(3), 236-242, 2021


  • Development of Real-Time Nitrification Denitrification Control with Activated Sludge Model to Achive Simultaneous Water Quality Improvement and Energy Saving  [in Japanese]

    MIYAOKA Takeshi , ARINO Takashi , YUDA Megumi , MIYAHARA Morio , NAKATA Masayuki , TOYOOKA Kazuhiro , WATANABE Shizuo

    <p> 既報により,リアルタイム硝化制御(RNC)または回路別送風制御システムを導入することにより,水質を維持しながら送気倍率を削減できる旨を報告している.今回報告するリアルタイム硝化脱窒制御(RNDC)は,水質改善と送風量の最適化を図ることを目的に,RNCに脱窒機能を追加するとともに,回路別送風制御システムを組み合わせた技術である.その制御は,反応タンクの流入水質の連続測定により流入 …

    Journal of Japan Sewage Works Association 58(700), 94-102, 2021


  • Temperature-Robust 0.48-V FD-SOI Intermittent Startup Circuit with 300-nA Quiescent Current for Batteryless Wireless Sensor Capable of 1-μA Energy Harvesting Sources

    SUDO Minoru , UTSUNOMIYA Fumiyasu , TANAKA Ami , DOUSEKI Takakuni

    … To verify the effectiveness of the circuit, the ISC was fabricated in a 0.8-μm triple-Vth FD-SOI CMOS process. … It was also successfully applied to a self-powered wireless plant-monitoring sensor system.</p> …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E104.A(2), 506-515, 2021


  • In-process monitoring of welding quality by robotic laser ultrasonic measurement system using microchip laser  [in Japanese]

    MATSUIDA Taketo , OTAKI Satoshi , NOMURA Kazufumi , ASAI Satoru

    … Recent studies have reported that LUT is applicable during welding and it's effective for in-process monitoring. … SAFT image obtained by in process measurement was evaluated to confirm the presence or absence of welding defect indication. … Then, during Gas Metal Arc (GMA) welding process in the mid-pass of multi-layer welding for a single bevel groove, we attempted to detect welding defects generated by introducing slits before welding. …



  • Fundamental Study for Optical Transillumination Imaging of Arteriovenous Fistula

    Kamiyama Hideaki , Kitama Masataka , Shimizu Hisae O. , Yamashita Masaji , Kojima Yohichiro , Shimizu Koichi

    … Daily monitoring of the AV fistula is crucially important to maintain its correct function. … We developed a new technique using a safe and simple instrument for noninvasive monitoring of the AV fistula. … This process clarified the blood vessel image and facilitated measurement of its inner diameter. … These results verified the feasibility and applicability of the proposed technique for non-invasive daily monitoring of AV fistulae.</p> …

    Advanced Biomedical Engineering 10(0), 1-10, 2021


  • Uncertain Nonlinear Process Monitoring Using Interval Ensemble Kernel Principal Component Analysis

    Wang Xianrui , Zhao Guoxin , Liu Yu , Yang Shujie

    … To verify the method, IEKPCA is applied to the Tennessee Eastman (TE) process. … The results show that the IEKPCA improves the accuracy of uncertain nonlinear process monitoring.</p> …

    Journal of Advanced Computational Intelligence and Intelligent Informatics 25(1), 101-109, 2021


  • Experimental Analysis of Image Dehazing Algorithms for Pelletization Process Images

    Wu Xin , Liu Xiaoyan , Yuan Fei

    … <p>The product quality of pelletization process in steel industry is usually monitored by machine vision system. … Whether these algorithms can be directly adopted in solving haze removal problem in industrial process images, needs to be studied. …

    ISIJ International 61(1), 269-279, 2021


  • Various applications of process plasma measurement with vacuum ultraviolet absorption spectroscopy  [in Japanese]

    TAKEDA Keigo

    <p>吸収分光法を用いたプラズマ診断技術は,プラズマ内部の活性粒子を定量的に計測できるため,プロセスプラズマにおける粒子反応過程を理解するうえで重要な役割を果たしている.本稿では特に,プロセスプラズマ内で生成される原子種の密度計測に使用される真空紫外吸収分光法について解説する.まず原理的な説明として,比較的簡便なプラズマ光源を吸収分光に使用する場合においてプラズマ光源に求められる特性や …

    Oyo Buturi 90(1), 24-30, 2021


  • An extractive streaming system to reduce monitoring traffic

    Mizutani Kimihiro

    … <p>Generally, a monitoring system has tradeoff between network fee and monitoring precision. … If the system user wants to monitor a something target from a remote office precisely, the network fee becomes higher because of taking lots of monitoring packets (i.e., video frame). … Through these process, the user can monitor a target area (i.e., focused area) precisely with low network fee. …

    IEICE Communications Express 10(1), 13-17, 2021


  • From Human Grading to Machine Grading: Automatic Diagnosis of e-Book Text Marking Skills in Precision Education

    Yang M. C. Albert , Y Irene , Chen L. , Flanagan Brendan , Ogata Hiroaki

    … To facilitate precision education, text marking skills can be used to determine students' learning process. … The findings of this research provide evidence supporting the importance of monitoring and training students' text marking skill and facilitating precision education. …

    Educational Technology & Society 24(1), 164-175, 2021


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