Showing 581 - 600 results of 1,540 for search '"electromagnetism"', query time: 0.04s Refine Results
  1. 581

    THE STUDY OF TRANSIENT PROCESSES OF THE FREQUENCY-REGULATED SYNCHRONOUS ELECTRIC DRIVE by B. I. Firago, S. V. Aleksandrovsky

    Published 2016-12-01
    “…The synchronous motors with electromagnetic excitation and permanent magnet excitation in various industrial settings, including load-lifting machines and mechanisms, are used. …”
    Get full text
    Article
  2. 582

    Research on the application of weighted-Laguerre-FDTD method with “unidirectional explicit” matrix in cylindrical structure by Dawei ZHU, Hailin CHEN, Zhongwen SHEN, Xiuling JIA, Zhen LI

    Published 2023-07-01
    “…To solve the shortcomings of FDTD algorithm in electromagnetic wave propagation in communication applications.A FDTD algorithm under “unidirectional explicit” matrix was constructed and applied to cylindrical structure.Firstly, a new coefficient matrix was established by the ideology of WCS and WLP.Secondly, the perturbation terms were introduced to form the initial value and iterative equations.Finally, the fields on the z axis were treated in special way.Numerical examples prove that the proposed algorithm is superior to the WCS-FDTD and WLP-FDTD in electromagnetic wave propagation.The best improvement efficiency is 83%, accuracy is 88%, and memory consumption is reduced by 44%.Meanwhile, comparing with the conventional FDTD algorithm, it can improve the efficiency of 7 time steps size and reduce the memory consumption by 53% without losing accuracy.Moreover, under the boundary truncation of the PML, the proposed algorithm also shows good electromagnetic wave energy absorption performance, which can reach below -60 dB.…”
    Get full text
    Article
  3. 583

    ANALYSIS OF THE INTERNAL RESONANCE CHARACTERISTICS OF RECTANGULAR CURRENT-CONDUCTING THIN PLATE IN TRANSVERSE MAGNETIC FIELD by LI Jing, HU YuDa

    Published 2017-01-01
    “…Based on the basic equation of electromagnetic elastic motion and the expression of electromagnetic force,the electromagnetic vibration equation of the rectangular thin plate in transverse magnetic field is obtained. …”
    Get full text
    Article
  4. 584

    Modeling of Lightning Strokes Using Two-Peaked Channel-Base Currents by V. Javor

    Published 2012-01-01
    “…Lightning electromagnetic field is obtained by using “engineering” models of lightning return strokes and new channel-base current functions and the results are presented in this paper. …”
    Get full text
    Article
  5. 585
  6. 586

    The Hydrophobization of Active Carbons by N.S. Polyakov, G.A. Petukhova, S.P. Vnukov, A.O. Shevchenko

    Published 1993-03-01
    “…Three methods for the hydrophobization of active carbons (ACs) have been investigated, i.e. chemical modification, heat treatment under the influence of a ultrahigh frequency electromagnetic field and heat treatment under the influence of a low-frequency electromagnetic field. …”
    Get full text
    Article
  7. 587

    Three-Dimensional Inversion of Borehole-Surface Resistivity Method Based on the Unstructured Finite Element by Zhi Wang, Sinan Fang

    Published 2021-01-01
    “…The electromagnetic wave signal from the electromagnetic field source generates induction signals after reaching the target geological body through the underground medium. …”
    Get full text
    Article
  8. 588
  9. 589

    The Gibbs Fundamental Relation as a Tool for Relativity by Friedrich Herrmann, Michael Pohlig

    Published 2025-01-01
    “…When relativistic physics is lectured on, interest is focused on the behavior of mechanical and electromagnetic quantities during a reference frame change. …”
    Get full text
    Article
  10. 590

    Wideband Negative Permittivity and Double Negative Fishnet-Mushroom-Like Metamaterial in X-Band Waveguide by Ahmed Mahmood, Golge Ogucu Yetkin, Cumali Sabah

    Published 2017-01-01
    “…A Fishnet-Mushroom-like metamaterial electromagnetic behaviour is represented in S-parameters numerically and experimentally for X-band frequencies arena. …”
    Get full text
    Article
  11. 591
  12. 592
  13. 593
  14. 594

    Phenomenological construction of metal photonic topological insulators based on theory of characteristic modes by Lili Dai, Jie Meng, Weiwen Li

    Published 2025-01-01
    “…Dielectric photonic crystals are usually used to construct electromagnetic topological insulators, while metal photonic crystals are easier to be manufactured and compatible with microwave circuits. …”
    Get full text
    Article
  15. 595

    Evolutionary origins of synchronization for integrating information in neurons by Takashi Shibata, Takashi Shibata, Noriaki Hattori, Hisao Nishijo, Tsutomu Takahashi, Tsutomu Takahashi, Yuko Higuchi, Yuko Higuchi, Satoshi Kuroda, Kaoru Takakusaki

    Published 2025-01-01
    “…Electromagnetic synchronization encompasses action potentials, electrical gap junctions, and ephaptic coupling. …”
    Get full text
    Article
  16. 596
  17. 597
  18. 598

    Intelligent Excavation Technologies for Satellite Spectrum Signals by Qiulin LYU, Xiaojin DING, Gengxin ZHANG

    Published 2022-09-01
    “…With the construction of spatial information network, the available spectrum resources are increasingly scarce, and the electromagnetic environment is becoming more and more complex, resulting a more prominent challenge of realizing the safe control of the global electromagnetic.Therefore, the sensing method of electromagnetic spectrum occupation state was studied, a time convolution neural network to sense the spectrum occupation state was constructed.To mine abnormal spectrum data, neural network was used to automatically detect abnormal spectrum, such as fl uctuation noise fl oor, spectrum grass and large bandwidth.The spectrum parameter extraction method was explored.Considering the large propagation delay between the spectrum-sensing satellite and its gateway, a neural network was constructed to predicted the spectrum occupation state.The perception, anomaly, parameters and prediction results of satellite spectrum signal were visualized.The preliminary evaluation results showed that the designed satellite-spectrum intelligent mining technologies could not only improved the sensing ability of spectrum situation, but also eff ectively improved the utilization of spectrum resources.…”
    Get full text
    Article
  19. 599

    HIGH-EFFICIENCY INFRARED RECEIVER by A. K. Esman, V. I. Kostenko, N. I. Mukhurov, G. L. Zykov, V. A. Potachits

    Published 2016-09-01
    “…Recent research and development show promising use of high-performance solid-state receivers of the electromagnetic radiation. These receivers are based on the low-barrier Schottky diodes. …”
    Get full text
    Article
  20. 600