Search Results 1-20 of 459

  • Visualization of spatial impulse responses with mixed reality techniques and moving microphone  [in Japanese]

    渡辺 靖明 , 片岡 優太 , 池田 雄介 , 及川 靖広 , 小坂 直敏

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(430), 51-56, 2020-02-28

  • Emergency Transportation Characteristics of Patients with Gastrointestinal Bleeding of Areal Groups in Osaka City  [in Japanese]

    木村 義成

    患者の受入先医療機関が速やかに決定しない救急事案(救急搬送困難事案)が全国的に報告され社会問題となっている。本稿では、大阪市内で搬送困難が報告されている消化管出血患者の搬送特性について、その地域差を明らかにし、患者の円滑な救急搬送にむけた対応策を検討した。分析手法として、搬送特性の地域差を検討するために「救急隊最近接地域」という空間分析単位を考案し、平日・休日や時間帯ごとの搬送時間や医療機関への連 …

    史林 = The Journal of history 103(1), 215-241, 2020-01

    IR  DOI 

  • HDR Imaging Based on Image Interpolation and Motion Blur Suppression in Multiple-Exposure-Time Image Sensor

    SHIMAMOTO Masahito , KAMEDA Yusuke , HAMAMOTO Takayuki

    … <p>We aim at HDR imaging with simple processing while preventing spatial resolution degradation in multiple-exposure-time image sensor where the exposure time is controlled for each pixel. … The contributions are the proposal of image interpolation by motion area detection and pixel adaptive weighting method by overexposure and motion blur detection.</p> …

    IEICE Transactions on Information and Systems E103.D(10), 2067-2071, 2020

    J-STAGE 

  • A PointNet-based CNN Framework for Spatial Data Interpolation  [in Japanese]

    TAKEUCHI Koh , KASHIMA Hisashi , UEDA Naonori

    <p>都市空間の様々な地点に数多くのセンサーが設置され,都市の活動が膨大な時空間データとして計測されている.これらの時空間データを利活用し,都市の状態把握や将来の変化予測に役立つ新たなデータ解析技術が必要とされている.データ解析のための技術として,畳み込み型ニューラルネットワーク(Convolutional Neural Network: CNN)が注目を集めて久しいが,CNNは観測値 …

    Proceedings of the Annual Conference of JSAI JSAI2020(0), 2P5GS303-2P5GS303, 2020

    J-STAGE 

  • Kriging Interpolation Evaluation of Vapor Pressure Deficit in Plant Factory with Solar Light

    KOGA Takashi , YAMAGUCHI Ken'ichi , IWATA Hiroshi , KURIMOTO Ikusaburo

    … The spatial data of environmental information cannot be obtained without interpolation among the detected values by the allocated sensors. … Therefore, Kriging is useful for interpolation in the plant factory with solar light.</p> …

    SICE Journal of Control, Measurement, and System Integration 13(3), 131-137, 2020

    J-STAGE 

  • ESTIMATION OF AN ACCELERATION FOURIER AMPLITUDE SPECTRUM AT AN ARBITRARY POINT USING SPATIAL DISTRIBUTION OF TRANSFER FUNCTION OF SURFACE STRATA BY MODIFIED KRIGING METHOD  [in Japanese]

    MIZUTANI Yukari , SUGAI Michiyo , MORI Yasuhiro , NOZU Atsushi , MITOBE Shigeki

    … Developing the proposed method, it is thought that it becomes possible to estimate GMI's at an arbitrary point by using a limited number of observation records obtained when an earthquake occurs.</p><p> It is practically impossible to estimate the spatial distribution of GMI's directly from the observation records by seismometers installed on the ground surface because it requires very dense distribution of seismometers. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (758), 459-467, 2019-04

    J-STAGE  AIJ 

  • Variable Fertilizer Recommendation for Grass Production by Image–based Growth Status

    KABIR Md. Shaha Nur , CHUNG Sun–Ok , JANG Bo–Eun , KIM Yong–Joo , LEE Geung–Joo , LEE Kyeong–Hwan , OKAYASU Takashi , INOUE Eiji

    … For the analysis of the spatial variation of growth level and mapping, geostatistical methods such as variogram modeling and Kriging interpolation were used. …

    Journal of the Faculty of Agriculture, Kyushu University 64(1), 145-155, 2019-02-28

    IR  DOI 

  • An Assessment of Soil Chemical Properties and Yields of Black Gram, Using GIS, in a Selected Area of Myanmar

    OO HTAY HTAY , OO KHIN MAR , SWE MAR SWE , NAING MOE NAING

    … Understanding the spatial variability of soil chemical properties is critical for improving the productivity of pulses and ensuring sustainable farming practices. … However, a systematic assessment on the spatial variability of pulses yield has not been conducted. … Interpolation allowing overlay mapping of variations in black gram yields on soil chemical properties was accomplished using ArcGIS software. …

    International Journal of Environmental and Rural Development 10(2), 14-19, 2019

    J-STAGE 

  • The Spatial Variability of Soil Chemical Properties in a Selected Area of Myanmar

    NAING MOE NAING , SWE MAR SWE , KYAW MYINT AUNG , TOE KYI , NGWE KYAW

    … <p>Sustainable crop production requires detailed knowledge of the spatial variability of soil properties, such as soil nutrients. … Soil fertility maps were generated using Inverse Distance Weighting (IDW) interpolation in ArcGIS software 10.5. …

    International Journal of Environmental and Rural Development 10(2), 20-26, 2019

    J-STAGE 

  • Analysis of Unsteady Vortical Flow Field in Rotating Cascade Using Instantaneous Pressure Field Measurement and Smart Visualization of CFD  [in Japanese]

    FURUKA Masato

    <p>ターボ機械における非定常流動現象の解明には,実験解析とCFD解析を併用することが不可欠である.この観点から,瞬時圧力分布計測法およびCFD結果の知的可視化手法について述べている.瞬時圧力分布計測法では,動翼列内の非定常流れ場の過渡的な現象を捉えるために,30個の高応答圧力センサおよび時空間補間を駆使して,翼間1ピッチにわたるケーシング壁面上の瞬時圧力分布の時系列データを得る.CF …

    Journal of the Visualization Society of Japan 39(153), 23-27, 2019

    J-STAGE 

  • Digital Image Correlation on FIB Ring-Core Measurement on Residual Stress of Thin Films

    Chou Yun-Chia , Lin Wen-Yen , Pan Wen-Chieh , Lin Ming-Tzer , Chen Terry Yuan-Fang

    … The DIC techniques were first introduced by Sutton who used the calculation of a grayscale digital image through bilinear interpolation for the object translation. …

    The Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2019(0), 1008B1145, 2019

    J-STAGE 

  • Super-Resolution Simulation for Real-Time Prediction of Urban Micrometeorology

    Onishi Ryo , Sugiyama Daisuke , Matsuda Keigo

    … It is shown that the proposed SR method can be used with a spatial scaling factor of 4 and that it outperforms conventional interpolation methods by a large margin. …

    SOLA 15(0), 178-182, 2019

    J-STAGE 

  • Cranial vault thickness measurement and distribution: a study with a magnetic calliper

    DEL OLMO LIANES IRENE , BRUNER EMILIANO , CAMBRA-MOO OSCAR , MOLINA MORENO MARÍA , GONZÁLEZ MARTÍN ARMANDO

    … Thickness distribution was evaluated and represented in bidimensional maps after spatial interpolation. …

    Anthropological Science 127(1), 47-54, 2019

    J-STAGE  Ichushi Web 

  • Cluster Analysis of the Long-Period Ground-Motion Simulation Data: Application of the Sagami Trough Megathrust Earthquake Scenarios

    Maeda Takahiro , Fujiwara Hiroyuki , Akagi Sho , Hayakawa Toshihiko

    … <p>A clustering method that classifies earthquake scenarios and the local area on the basis of similarities in the spatial distribution of ground motion was applied to long-period ground-motion data computed by a seismic wave propagation simulation. …

    Journal of Disaster Research 14(3), 435-444, 2019

    J-STAGE 

  • Fast Superpixel Segmentation via Boundary Sampling and Interpolation

    XU Li , LUO Bing , KONG Mingming , LI Bo , PEI Zheng

    … <p>This letter proposes a fast superpixel segmentation method based on boundary sampling and interpolation. … On the one hand, there exists high spatial redundancy within each local region, which could be discarded. …

    IEICE Transactions on Information and Systems E102.D(4), 871-874, 2019

    J-STAGE 

  • Interpolation of Groundwater Nitrate Concentration Using Time-Space Analysis in the Miyakonojo Basin  [in Japanese]

    HIRAOKA Toru , TOYOMITSU Yukio , NAKAGAWA Kei , NONAKA Hirofumi , HIROTA Masaharu , SUZUKI Yoshihiro

    <p> 筆者らは,都城盆地における地下水中の硝酸性窒素濃度を長年観測してきた.観測は,1995年11月から開始し,毎年2月と8月を中心に行った.しかしながら,未観測地点の硝酸性窒素濃度を知りたい場合もある.そこで,本研究では既観測地点の空間的に分布した時系列の硝酸性窒素濃度を用いて未観測地点の硝酸性窒素濃度を補間する方法を開発した.提案法は,既観測地点の硝酸性窒素濃度を用いて未観測地点 …

    JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES 32(1), 23-34, 2019

    J-STAGE 

  • Improving Spatial Rainfall Estimates at Mt. Merapi Area Using Radar-Rain Gauge Conditional Merging

    Hambali Roby , Legono Djoko , Jayadi Rachmad , Oishi Satoru

    … The X-band multi-parameter radar developed to support these warning systems provides rainfall information with high spatial and temporal resolution. … By using the cokriging interpolation method, kriged gauge rainfall, and kriged radar rainfall data were obtained, which were then combined with radar rainfall data to yield the adjusted spatial rainfall. …

    Journal of Disaster Research 14(1), 69-79, 2019

    J-STAGE 

  • Channel Estimation based on Spatial Correlation in Massive MIMO  [in Japanese]

    栗山 真純 , 大槻 知明

    映像情報メディア学会技術報告 = ITE technical report 42(23), 1-4, 2018-07

  • Invited Lecture : Machine Learning Based Regression of Fingerprint Database for Unknown Radio Localization (スマート無線) -- (特集セッション「機械学習や人工知能が応用されているスマート無線技術」)

    HANIZ Azril , TRAN Gia Khanh , SAKAGUCHI Kei , TAKADA Jun-ichi , YAMAGUCHI Toshihiro , MITSUI Tsutomu , ARATA Shintaro

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117(457), 81-88, 2018-02-28

  • Visualization Service for Congestion Degree Using BLE Beacons  [in Japanese]

    佐藤 大祐 , 美原 義行 , 佐藤 吉秀 , 田中 悠介 , 宮本 勝 , 佐久間 聡

    本研究では,イベント会場における混雑度を即時的に把握・可視化することで,イベント運営者に混雑リスクの注意喚起をすることを目指す.イベント会場内の混雑度の取得のため,会場内にBLE(Bluetooth Low Energy)ビーコンを多数設置し,来場ユーザのスマートフォンアプリ(以下,アプリ)で取得したBLEビーコン電波情報をサーバで収集することで会場内の群集密度を計測する.1つのBLEビーコンがカ …

    情報処理学会論文誌コンシューマ・デバイス&システム(CDS) 8(1), 1-10, 2018-01-30

    IPSJ 

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