Mathematics and Computer Science

Volume 4, Issue 6, November 2019

  • EMG Signal Processing and Application Based on Empirical Mode Decomposition

    Xu Mengying, Yang Xiaoli, Xu Chenli, Yang Bin

    Issue: Volume 4, Issue 6, November 2019
    Pages: 99-103
    Received: 10 October 2019
    Accepted: 22 November 2019
    Published: 6 December 2019
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    Abstract: With the development of rehabilitation medicine and kinematics, the study of Electromyographic (EMG) signal come into people’s sight. The information obtained from the surface EMG signals can not only reflect the motion state of muscles and joints, but also judge people's motion type, which is one of the important indexes in the study of human body... Show More
  • Stability and Oscillatory Behavior of the Solutions on a Class of Coupled Van der Pol-Duffing Equations with Delays

    Chunhua Feng

    Issue: Volume 4, Issue 6, November 2019
    Pages: 104-111
    Received: 31 October 2019
    Accepted: 29 November 2019
    Published: 10 December 2019
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    Abstract: In the present paper, a class of coupled van der Pol-Duffing oscillators with a nonlinear friction of higher polynomial order model which involves time delays is investigated. The coefficients of the highest order of the polynomial determine the boundedness of the solutions. With special attention to the boundedness of the solutions and the instabi... Show More
  • Determination of Forest Reserves Area Using Images Processed by Drones, Neural Networks and Monte Carlo Method

    Paulo Marcelo Tasinaffo, Afonso Henriques Moreira Santos, Elias Cavalcante Junior, Carlos Henrique Quartucci Forster, Rafael Augusto Lopes Shigemura, Rafael Jacomel, Victor Ulisses Pugliese, Bruno Koshin Vazquez Iha, Adilson Marques da Cunha, Gildarcio Sousa Goncalves, Luiz Alberto Vieira Dias

    Issue: Volume 4, Issue 6, November 2019
    Pages: 112-129
    Received: 26 June 2019
    Accepted: 30 July 2019
    Published: 24 December 2019
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    Abstract: Land cover classification analysis from satellite imagery methods are important because they are the basis for characterizing surface conditions and evolution, supporting the management and optimization of land resources, evaluating global climate and environmental changes, and facilitating sustainable regional economic and social development. In o... Show More
  • Symmetric I* Restriction Method of Fuzzy Inference

    Yiming Tang, Guangqing Bao

    Issue: Volume 4, Issue 6, November 2019
    Pages: 130-137
    Received: 12 November 2019
    Accepted: 11 December 2019
    Published: 24 December 2019
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    Abstract: As one of important parts of fuzzy logic, fuzzy inference plays a vital role in the fields of fuzzy control, artificial intelligence, affective computing, image processing and so forth. Two key problems of fuzzy inference are FMP (fuzzy modus ponens) and FMT (fuzzy modus tollens). How to get the ideal solution for FMP and FMT is a difficult problem... Show More
  • An Uncertain Resource Constrained Scheduling Model Based on Uncertainty Theory

    Qian Zhang, Xiaosheng Wang, Wei Li, Hao Hu

    Issue: Volume 4, Issue 6, November 2019
    Pages: 138-141
    Received: 20 November 2019
    Accepted: 16 December 2019
    Published: 27 December 2019
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    Abstract: Resource constrained project scheduling problem is to make a schedule for minimizing of the completion time or total cost subject to precedence rules and resource constraints. Traditional resource constrained project scheduling problem research takes into account achieve management goal in certain environment. However, there are many uncertainties ... Show More
  • A Tanker Port Positioning Method of Quantitative Loading Automation

    Wenliang Zhu, Yanzhe Ni, Tingbo Huang, Jiahao Han

    Issue: Volume 4, Issue 6, November 2019
    Pages: 142-148
    Received: 12 November 2019
    Accepted: 13 December 2019
    Published: 30 December 2019
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    Abstract: Laser scanning ranging radar is an important tool for machines to perceive the surrounding environment and is widely used in the power, forestry, surveying and mapping industries. At present, the loading of oil and grain oil in our country generally adopts the way of manual loading. The loading arm is inserted into the tank of the tanker for refuel... Show More