Search Results 1-20 of 1022

  • A EMPIRICAL STUDY ON THE UPDATE METHOD OF TWO-DIMENSIONAL DRAWINGS OF THE UNDERGROUND BURIED OBJECTS USING THREE-DIMENSIONAL MODEL BASED ON A SIMPLIFIED MEASUREMENT DATA  [in Japanese]

    岡本 健 , 今井 龍一

    建設マネジメント問題に関する研究発表・討論会講演集 土木学会建設マネジメント委員会 編 = The proceeding of Annual Forum on Construction Management Issues 38, 83-94, 2020-12

  • Study design and baseline characteristics of a population-based prospective cohort study of dementia in Japan: the Japan Prospective Studies Collaboration for Aging and Dementia (JPSC-AD)

    Ninomiya Toshiharu , on behalf of the JPSFC-AD Study Group , Nakaji Shigeyuki , Maeda Tetsuya , Yamada Masahito , Mimura Masaru , Nakashima Kenji , Mori Takaaki , Takebayashi Minoru , Ohara Tomoyuki , Hata Jun , Kokubo Yoshihiro , Uchida Kazuhiro , Taki Yasuyuki , Kumagai Shuzo , Yonemoto Koji , Yoshida Hisako , Muto Kaori , Momozawa Yukihide , Akiyama Masato , Kubo Michiaki , Ikeda Manabu , Kanba Shigenobu , Kiyohara Yutaka

    Environmental Health and Preventive Medicine 25(1), 2020-10-31

    DOI 

  • FREQUENCY-DOMAIN STIFFNESS IDENTIFICATION BASED ON ACCELERATIONS ON SPECIFIC FLOORS IN ASYMMETRIC BUILDINGS  [in Japanese]

    NABESHIMA Kunihiko

    … In particular, investigation on physical SI of three-dimensional (3D) building structures with stiffness or mass eccentricities are more limited.</p><p> This paper proposes a new method of frequency-domain physical-parameter system identification of three-dimensional building structures with stiffness eccentricity, which accompany torsional vibration. … The proposed method has three processes. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (773), 899-909, 2020-07

    J-STAGE  AIJ 

  • Construction of three-dimensional point cloud data of work roads using video data  [in Japanese]

    瀧 誠志郎 , 中澤 昌彦 , 斎藤 仁志 , 大野 勝正 , 鈴木 秀典 , 吉田 智佳史 , 千原 敬也 , 図子 光太郎

    森林利用学会誌 = Journal of the Japan Forest Engineering Society 35(4), 203-208, 2020

  • Application of an intraoral scanner for dental health guidance:High precision <i>in vitro </i>detection of periodontal tissue changes

    TANI Akina , HIGUCHI Shizuo , KAKIMOTO Kazutoshi

    … <p>To assess the use of an intraoral scanner (IOS) for basic periodontal treatment and dental health guidance, we evaluated the data of periodontal tissue records and the range in which changes in periodontal tissues could be observed. … An IOS was used to record the three-dimensional shape of complete dentures and wax dentures. … Measurement points on cross sections were made with a design knife at 32 points on the model gingiva. …

    Journal of Osaka Dental University 54(2), 263-272, 2020

    J-STAGE 

  • Visualization of self-assembled molecular layer at a hydrophobic graphite interface in liquid by three-dimensional scanning force microscopy  [in Japanese]

    Miyazawa Keisuke , Foster William , Kusumaatmaja Halim , Voïtchovsky Kislon , Fukuma Takeshi

    <p>本研究では、3D-SFMを用いたグラファイト界面の自己組織化分子膜の3次元構造計測と3次元画像処理を用いた新規データ解析手法と組み合わせることにより、揮発する有機溶媒中の3D-SFM計測においてもノイズの少ない3次元力分布像を取得することに成功した。本手法は、様々な溶液環境下における3D-SFM計測に適用可能な汎用性の高いデータ解析手法であり、3D-SFMの幅広い分野への拡大と普 …

    Abstract book of Annual Meeting of the Japan Society of Vacuum and Surface Science 2020(0), 249, 2020

    J-STAGE 

  • Descending Stairs in Patients after Total Knee Arthroplasty Fails to Reproduce Efferent Knee Joint Extension Moment in Healthy Volunteers  [in Japanese]

    FURUMOTO Taiki , HAMADA Daisuke , KATAYAMA Ayane , MATSUI Yu , KAWAMURA Yuka , TOMONARI Ken , KATOH Shinsuke , SAIRYO Koichi

    <p>【目的】人工膝関節全置換術（以下，TKA）後患者の階段降段動作では，同年代健常者の遠心性膝関節伸展モーメントを再現できているのかを明らかにすること。【方法】対象は，術後1 年以上経過し降段動作が1 足1 段様式で可能なTKA 群8 例と同年代高齢者である健常群10 例とした。降段動作解析は，三次元動作解析装置と床反力計を用いて矢状面の関節角度，関節モーメント，関節パワーと表面筋電 …

    Physical Therapy Japan 47(6), 531-539, 2020

    J-STAGE 

  • Development of Cathodic Protection Monitoring Method Using Data Assimilation  [in Japanese]

    SAITO Tatsuya , AMAYA Kenji

    … <p>We have developed inverse analysis method that simultaneously estimates the three-dimensional position of measuring instrument and output current from sacrificial anode. … Inverse analysis is a method of estimating an unknown output current from sacrificial anode from potential data measured near the sacrificial anode. …

    Journal of the Society of Materials Science, Japan 69(11), 783-788, 2020

    J-STAGE 

  • Volume Measurements of Post-transplanted Liver of Pediatric Recipients Using Workstations and Deep Learning  [in Japanese]

    Esaki Toru , Furukawa Rieko

    … <p><i>Purpose</i>: The purpose of this study was to propose a method for segmentation and volume measurement of graft liver and spleen of pediatric transplant recipients on digital imaging and communications in medicine (DICOM) -format images using U-Net and three-dimensional (3-D) workstations (3DWS) . … As per the verification results, Dice coefficients for the test data were as follows: graft liver, 0.758 and spleen, 0.577. …

    Japanese Journal of Radiological Technology 76(11), 1133-1142, 2020

    J-STAGE 

  • Structure Gauge Measuring Equipment using Laser Range Scanners  [in Japanese]

    Nagamine Nozomi , Toyama Takashi , Mukojima Hiroki , Omori Tatsuya , Tada Yasuhiro

    … <p>Periodic measurement of the structure gauge is of extreme importance to ensure the safety of train operations. … This measurement is labor intensive and time consuming because there is a considerable number of wayside facilities. … In addition, we have developed a management system that maps the measured three-dimensional point cloud data to the facilities data. …

    IEEJ Transactions on Industry Applications 140(11), 874-884, 2020

    J-STAGE 

  • Construction of three-dimensional point cloud data of work roads using video data.  [in Japanese]

    Taki Seishiro , Nakazawa Masahiko , Saitou Masashi , Oono Katsumasa , Suzuki Hidenori , Yoshida Chikashi , Chihara Takaya , Zushi Kotaro

    <p>一般的にSfM（Structure from Motion）では，主に多視点から撮影された複数枚の静止画像が用いられる。このため静止画を撮影する際には，撮影のたびに立ち止まり，OL（オーバーラップ）率やSL（サイドラップ）率に常に注意しながらの撮影が必要となり，撮影手法が煩雑である。本研究では，作業道の三次元点群データ化のための簡易的な撮影手法を明らかにすることを目的とし，作業道 …

    Journal of The Japan Forest Engineering Society 35(4), n/a, 2020

    J-STAGE 

  • DEVELOPMENT OF VISUALIZATION SYSTEM FOR SOUND ENVIRONMENT SIMULATION OF DISASTER RADIO USING MIXED REALITY  [in Japanese]

    IKENO Kazunosuke , FUKUDA Tomohiro , YABUKI Nobuyoshi

    … Furthermore, when users change the simulation condition such as sound source positions, users can view the results of the simulation immediately.</p><p> It is necessary to create three-dimensional model of the object region and input our system preliminarily. … The cause of this problem is the data transmission speed between PC and HoloLens. …

    Journal of Environmental Engineering (Transactions of AIJ) 85(776), 757-765, 2020

    J-STAGE 

  • Utilization of Three-Dimensional Measurement Data : From Motion Analysis to Musculoskeletal Analysis  [in Japanese]

    KIKUCHI Toshihiko

    Journal of The Society of Instrument and Control Engineers 59(10), 743-747, 2020

    J-STAGE 

  • Estimating three-dimensional tree shape of 40-year-old evergreen conifer using terrestrial laser scanner and a voxel-based analysis  [in Japanese]

    Ebina Masuto , Ishizuka Wataru , Abe Tomoyuki

    <p>蝦名益仁・石塚航・阿部友幸：<b>地上レーザ測量とボクセル解析を用いた40年生常緑針葉樹の三次元形状の推定，森林計画誌54：13～22，2020</b>　地上レーザ測量によって高密度の三次元点群データが取得できるようになり，林分の三次元情報の森林分野への応用が期待される。それには，精度良く三次元形状を推定する技術が求められる。そこで，空間を仮想的な立方体で …

    Japanese Journal of Forest Planning 54(1), 13-22, 2020

    J-STAGE 

  • Analysis of Three-dimensional Structure and Formation Mechanism of Degenerate Pearlite in Eutectoid Steel  [in Japanese]

    Nakamura Yuta , Wang Zhi-Lei , Ogawa Toshio , Adachi Yoshitaka

    … <p>We investigated the three-dimensional morphology and crystallographic characteristics of cementite in degenerate pearlite in eutectoid steel using FIB-SEM. … The three-dimensional morphology of cementite in degenerate pearlite was rod-like and/or incomplete plate-like structures. …

    Tetsu-to-Hagane 106(10), 751-756, 2020

    J-STAGE 

  • Responses to convulsants in human cerebral cortical organoids  [in Japanese]

    ODAWARA Aoi , MATSUDA Naoki , ISHIBASHI Yuto , YOKOI Remi , SUZUKI Ikuro

    … As one approach to IVIVE, an assessment method using a human brain organoid that mimics the three-dimensional structure is considered to be effective. … In this study, we attempted to detect the response to convulsants by MEA measurement using human cerebral cortical organoids.</p><p>[Methods]</p><p>Human cerebral organoids were prepared using the STEMdiff Cerebral Organoid kit from STEMCELL Technologies. …

    Annual Meeting of the Japanese Society of Toxicology 47.1(0), P-140, 2020

    J-STAGE 

  • Accuracy of Position Reproducibility of Intraoral Scanner for Multiple Missing Teeth  [in Japanese]

    FUKAZAWA Shota , TANABE Norimasa , TAKAFUJI Kyoko , YONEZAWA Yu , HARA Soichiro , NATSUBORI Reiji , CHIBA Toyokazu , KONDO Hisatomo

    <p>本研究の目的は，2種の口腔内スキャナーと，1種の歯科技工用スキャナーを使用して，多数歯欠損を想定したインプラントボールアバットメント間における距離の真度，精度の比較検討を行い，口腔内スキャナーの精確さを評価することである．</p><p>下顎インプラント実習用模型にインプラント体を4本埋入した．舌側部に校正用基準球を設置し，本研究のマスターモデルとした．マス …

    Journal of Japanese Society of Oral Implantology 33(2), 176-183, 2020

    J-STAGE  Ichushi Web 

  • Real-time information presentation system for support during breast reconstruction  [in Japanese]

    Kaneko Kotaro , Suzuki Takashi , Chiba Shinji , Washio Toshikatsu , Yano Tomoyuki , Arafune Tatsuhiko

    <p>乳房再建における乳房形状の定量的な評価指標は未だ確立されておらず，それに伴う術後乳房形状の整容性低下が課題として挙げられている．我々は乳腺切除前と再建術中の三次元形状差分情報を求め，局所の形状差情報を患者の皮膚表在へプロジェクションマッピングするシステムを開発し既報にて報告した．本システムを用いた形成外科専門医によるシステム評価により，計算処理が煩雑であること，形状情報がより迅速 …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 260-260, 2020

    J-STAGE 

  • Topographic Interpretation and Quantification of Landslide Terrain Deformation Using Aerial Laser Measurement Data  [in Japanese]

    KIKUCHI Teruyuki , SAKITA Koki , HATANO Teruyoshi , NISHIYAMA Satoshi

    <p>本研究の狙いは，地すべり・崩壊の予察に必要な地形を定量的に判読することを目的として，これに必要な三次元点群密度を見つけることである．地すべり・崩壊を評価するために滑落崖，側方崖，小崖，開口割れ目，陥没凹地，不規則凹凸，ガリーの規模を把握することが必要であるが，このためには，詳細な地形情報の取得が重要である．しかし，航空レーザ計測方法や使用機材による点密度と定性的な地形判読の比較を …

    Geoinformatics 31(2), 37-45, 2020

    J-STAGE 

  • THREE-DIMENSIONAL SIMULATION OF TURBIDITY CURRENT AND BED DEFORMATION AROUND SEDIMENT RELEASE FACILITY AT DAM  [in Japanese]

    OTA Kazuyuki , GOTO Takaomi , HONDA Tsuyoshi

    <p>　本研究では，ダムの底部排砂管からの粘着性土の排砂に関する3次元濁質流動・河床変動解析を行った．まず，現地観測との比較により，解析モデルの妥当性検証を行った．排砂管直上流の局所洗掘形状および流下濁度が解析で妥当に再現されることが示された．そして，排砂時の洗掘速度について，排砂管を全開とした直後に比べて一定時間経過後に洗掘速度がより大きくなる現象が明らかになった．本研究で構築した解 …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 76(1), 42-52, 2020

    J-STAGE 

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