Search Results 1-20 of 185

  • Metric discrepancy results for geometric progressions perturbed by irrational rotations

    Fukuyama Katusi , Mori Shinya , Tanabe Yusuke

    Acta Mathematica Hungarica 161(1), 48-65, 2020-06

    IR 

  • Design and Fabrication of Bridge Decks made from Extruded Aluminium  [in Japanese]

    Djedid Amar , Guillot Michel , Desjardins Victor , Annan Charles-Darwin , Fafard Mario

    … This strategy proposes a specific sequence of installation that may provide satisfactory fit and limit the effect of any geometric inaccuracies in the individual extrusions. …

    Journal of Light Metal Welding 58(Supplement), 138s-144s, 2020

    J-STAGE 

  • Proposal of computer aided process planning of parts machining using workholding devices

    KOMATSU Wataru , INOUE Yuki , NAKAMOTO Keiichi

    … In order to reduce preparation time, computer-aided process planning (CAPP) is expected to automatically determine machining process parameters such as machining sequence, cutting tools, and cutting conditions. … In the author's previous study, novel machining features are proposed to derive machining process parameters from specific geometric shape patterns of removal volume during a parts machining operation. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 14(3), JAMDSM0033-JAMDSM0033, 2020

    J-STAGE 

  • Proposal of a feature recognition method to reflect design information  [in Japanese]

    INOUE Yuki , NAKAMOTO Keiichi

    … In previous works, machining features have been usually recognized based on geometric information such as surface, volume, and so on. … However, those machining features never satisfy designer's intents due to the recognition without dealing with design information such as geometric tolerances and surface roughness. … Then, the same machining sequence is allocated to some machining primitives which have the same design information. …

    Transactions of the JSME (in Japanese) 86(882), 19-00414-19-00414, 2020

    J-STAGE 

  • Automated Process Planning System for End Milling Operation Constrained by Geometric Dimensioning and Tolerancing (GD&T)

    Nishida Isamu , Adachi Shogo , Shirase Keiichi

    … This study proposes a process planning system that automatically defines the machining region and determines the machining sequence. … Although previous studies have explored computer-aided process planning, only a few have considered geometric tolerances. … Geometric tolerances are indicated on product drawings to eliminate their ambiguity and manage machining quality. …

    International Journal of Automation Technology 13(6), 825-833, 2019

    J-STAGE 

  • Machine Tool Assignment Realized by Automated NC Program Generation and Machining Time Prediction

    Nishida Isamu , Shirase Keiichi

    … The removal region changed according to the determined machining sequence. … The conditions for machining the removal region is automatically determined according to the machining case data, which is stored by linking the geometric properties of the removal region with the machining conditions determined by experienced operators. …

    International Journal of Automation Technology 13(5), 700-707, 2019

    J-STAGE 

  • Shape optimization of a flexible beam with a local shape feature based on ANCF

    HE Gang , GAO Kang , JIANG Jun , LIU Ruifeng , LI Qian

    … A mapping between the ANCF element local coordinates and the NURBS localized geometric parameters is used for the consistent implementation of the overlapping methods. … A two-stage shape optimization method based on SQP (Sequence quadratic program ) is run to reduce the compliance of the beam. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 13(3), JAMDSM0059-JAMDSM0059, 2019

    J-STAGE 

  • The study of material with intention of creating mathematics by students : The analysis from a viewpoint of mathematization for "sugaku daiitirui"  [in Japanese]

    今野 省吾

    … The purpose of this study is to clarify the structure of "sugaku daiitirui" questions and the sequence of activities, focusing on the fact that the students create mathematics in learning differential and integral. … For that purpose, I analyze the questions of "division quadrature", "sequence", "limit", "geometric progression", and "infinite decimal", which are the processes leading to differential integration in itirui. …

    東北数学教育学会誌 = Journal of Tohoku Society of Mathematics Education (50), 73-86, 2019

    IR  DOI 

  • TWO OPEN-POINT GAMES RELATED TO SELECTIVE (SEQUENTIAL) PSEUDOCOMPACTNESS, WITH APPLICATION TO 1-CL-STARCOMPACTNESS PROPERTY OF MATVEEV (Research Trends on Set-theoretic and Geometric Topology and their cooperation with various branches)

    Dorantes-Aldama Alejandro , Shakhmatov Dmitri

    … A topological space X is selectively sequentially pseudocompact (selectively pseudocompact) if for every sequence {U_{n} : n in mathrm{N}} of non-empty open subsets of X, one can choose a point x_{n} in U_{n} for every n in mathrm{N} in such a way that the sequence {x_{n} : n in mathrm{N}} has a convergent subsequence (respectively, has an accumulation point in X). …

    数理解析研究所講究録 (2064), 41-52, 2018-04

    IR 

  • Linear Complexity of Geometric Sequences Defined by Cyclotomic Classes and Balanced Binary Sequences Constructed by the Geometric Sequences

    TSUCHIYA Kazuyoshi , OGAWA Chiaki , NOGAMI Yasuyuki , UEHARA Satoshi

    … An m-sequence is a linear feedback shift register sequence with maximal period over a finite field. … A geometric sequence is a sequence given by applying a nonlinear feedforward function to an m-sequence. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E101.A(12), 2382-2391, 2018

    J-STAGE 

  • Split and Shift of <i>ε</i>-martensite Peak in an X-ray Diffraction Profile during Hydrogen Desorption: A Geometric Effect of Atomic Sequence

    Koyama Motomichi , Abe Yuji , Tsuzaki Kaneaki

    <p>Cryogenic X-ray diffraction measurements demonstrated a split of the <i>ε</i>-martensite peak at 193 K in a hydrogen-charged austenitic steel. Only the higher angle peak remained …

    ISIJ International 58(9), 1745-1747, 2018

    J-STAGE 

  • Pain Intensity Estimation Using Deep Spatiotemporal and Handcrafted Features

    WANG Jinwei , SUN Huazhi

    … We use C3D, a deep 3-dimensional convolutional network that takes a continuous sequence of video frames as input, to extract spatiotemporal facial features. … For handcrafted features, we propose extracting the geometric information by computing the distance between normalized facial landmarks per frame and the ones of the mean face shape, and we extract the appearance information using the histogram of oriented gradients (HOG) features around normalized facial landmarks per frame. …

    IEICE Transactions on Information and Systems E101.D(6), 1572-1580, 2018

    J-STAGE 

  • On the Texture Angle Detection Used in Space-Time Image Velocimetry (STIV)

    Tsubaki Ryota

    … The space-time image velocimetry (STIV) method evaluates the velocity of a water surface by analyzing a texture angle within a space-time image (STI) obtained from an image sequence of the flowing water's surface. … In the manuscript, derivation of the BGT is first reviewed and then a geometric representation of the BGT is discussed. …

    Water Resources Research 53(12), 10908-10914, 2017-12

    IR 

  • Origami Folding Sequence Generation Using Discrete Particle Swarm Optimization

    Bui Ha-Duong , Jeong Sungmoon , Chong Nak Young , Mason Matthew

    … Through extensive numerical experiments, we have shown that the proposed approach can generate an optimum origami folding sequence by iteratively minimizing the Hausdorff distance, a dissimilarity metric between two geometric shapes. … Moreover, an in-house origami simulator is newly developed to visualize the sequence of origami folding. …

    Lecture Notes in Computer Science (10637), 484-493, 2017-10-24

    IR 

  • Analysis of Optimum Slinky Loop Arrangement for Horizontal Ground Heat Exchanger

    ALI Md. Hasan , MIYARA Akio

    … Aiming to improve the thermal performance of slinky GHE, the uniform distribution of slinky loops were modified by a geometric sequence such that gradually decreasing the loop pitch interval from starting loop to end loop. … Under the present operating conditions and geometric parameters considered, the modified arrangement of slinky GHE loops offers maximum 22.2% higher heat exchange compared with uniform distribution of loops of slinky GHE within 7 days of continuous operation.</p> …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 34(4), 473, 2017

    J-STAGE 

  • Incremental Loop Closure Verification by Guided Sampling

    Kanji Tanaka

    … <p>Loop closure detection, which is the task of identifying locations revisited by a robot in a sequence of odometry and perceptual observations, is typically formulated as a combination of two subtasks: (1) bag-of-words image retrieval and (2) post-verification using random sample consensus (RANSAC) geometric verification. …

    Journal of Advanced Computational Intelligence and Intelligent Informatics 21(1), 59-66, 2017

    J-STAGE 

  • DEVELOPMENT OF ANALYSIS TOOL FOR VISUAL SEQUENCE BY USING VR WALKTHROUGH SYSTEM  [in Japanese]

    YASUFUKU Kensuke

    … This study aims to evaluate architectural space quantitatively based on visual sequence. … To analyze a visual sequence in an existing architecture, we measured the changes of the indices that are the geometric characteristics of a visual field based on the isovist theory. …

    AIJ Journal of Technology and Design 23(54), 637-641, 2017

    J-STAGE 

  • Interleaved Sequences of Geometric Sequences Binarized with Legendre Symbol of Two Types

    TSUCHIYA Kazuyoshi , NOGAMI Yasuyuki , UEHARA Satoshi

    … An m-sequence is a linear feedback shift register sequence with maximal period over a finite field. … A geometric sequence is a binary sequence given by applying a nonlinear feedforward function to an m-sequence. … Nogami, Tada and Uehara proposed a geometric sequence whose nonlinear feedforward function is given by the Legendre symbol. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E100.A(12), 2720-2727, 2017

    J-STAGE 

  • Development of model identification methodology based on form recognition for Computer-Aided Process Planning

    ARRIBA-MANGAS Alejandro DE , FUKUDA Ryo , AOYAMA Hideki

    … The methodology is based on an original coding system that links the geometric information extracted from the CAD model with the features of the part by means of an identification sequence which is detailed in the text. … In addition, quantitative geometric data is also extracted from the CAD model on behalf of future steps of the CAPP system, such as the NC code generation stage. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 11(5), JAMDSM0054-JAMDSM0054, 2017

    J-STAGE 

  • Multi-Valued Sequences Generated by Power Residue Symbols over Odd Characteristic Fields

    NASIMA Begum , NOGAMI Yasuyuki , UEHARA Satoshi , H. MOLEROS-ZARAGOZA Robert

    … Then, for the maximum length sequence of vectors generated by the primitive polynomial, the trace function is used for mapping these vectors to scalars as elements in the prime field. … Finally, a pseudo random <i>k</i>-value sequence is obtained. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E100.A(4), 922-929, 2017

    J-STAGE 

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