Showing 641 - 660 results of 1,540 for search '"electromagnetic"', query time: 0.05s Refine Results
  1. 641

    Surface Plasmon Singularities by Gabriel Martínez-Niconoff, P. Martinez-Vara, G. Diaz-Gonzalez, J. Silva-Barranco, A. Carbajal-Domínguez

    Published 2012-01-01
    “…With the purpose to compare the physical features of the electromagnetic field, we describe the synthesis of optical singularities propagating in the free space and on a metal surface. …”
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    Article
  2. 642

    Broken Wire Detection System for PCCPs Based on Raspberry Pi and Deep Learning by SUN Xuechao, ZHANG Youyuan, ZHU Jinxiang, WANG Ping, YIN Da

    Published 2024-01-01
    “…Broken wire electromagnetic detection technology for prestressed concrete cylinder pipes (PCCPs) is an important technical means to maintain the safety of PCCP engineering. …”
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    Article
  3. 643

    Design optimization of inner and outer‐rotor PMSGs for X‐ROTOR wind turbines by Reza Yazdanpanah, Seyed Abolfazl Mortazavizadeh, Mohammad Salehian, David Campos‐Gaona, Olimpo Anaya‐Lara

    Published 2024-10-01
    “…In order to validate the analytical model, ANSYS electromagnetic and thermal simulations have been used. …”
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    Article
  4. 644

    Reconfigurable and Tunable Metamaterials: A Review of the Theory and Applications by Jeremiah P. Turpin, Jeremy A. Bossard, Kenneth L. Morgan, Douglas H. Werner, Pingjuan L. Werner

    Published 2014-01-01
    “…Metamaterials are being applied to the development and construction of many new devices throughout the electromagnetic spectrum. Limitations posed by the metamaterial operational bandwidth and losses can be effectively mitigated through the incorporation of tunable elements into the metamaterial devices. …”
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    Article
  5. 645

    Indoor wireless signal coverage and enhancement based on passive reconfigurable intelligent metasurface by Haixia LIU, Hao YI, Xiangjin MA, Shuyao YUE, Xudong KONG, Pei MA, Yuxin ZENG, Long LI

    Published 2022-12-01
    “…Reconfigurable intelligent metasurface (RIS) is a new type of artificial electromagnetic metamaterial, which can control the frequency, amplitude, phase, polarization, propagation direction and wave type of electromagnetic wave flexibly.In the field of wireless communication, RIS can be used to reconstruct the wireless communication channel to achieve blind coverage of wireless signals and improve the communication quality.First, the development and research status of RIS, the key technologies and application scenarios of RIS were summarized and analyzed.Then, a new passive RIS was proposed to realize the characteristics of the aperture reconfiguration and beam reconfiguration through passive coding and splicing principle, which had the advantages of low cost, low power consumption and low complexity.Finally, the blind area coverage enhancement experiment of indoor wireless signal based on passive reflection metasurface was carried out.The effectiveness of passive splicing metasurface in wireless communication blind coverage scenarios was proved by comparison between simulation and field measurement.In addition, for 5G/6G millimeter wave communication, the passive RIS with double-layer cross dipole elements was designed and applied to typical indoor L-shaped corridor scene to verify the enhancement effect of indoor wireless signal coverage.…”
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  6. 646
  7. 647

    Non-cooperative signal modulation recognition algorithm based on joint feature parameter extraction by Haifei SI, Xingliu HU, Zhen SHI, Shiyong LI

    Published 2020-07-01
    “…Aiming at the problem that in the current electromagnetic environment,the modulation method is complicated,the frequency-consuming equipment increases,the spectrum is congested,and the electromagnetic environment interference increases,the algorithm of OFDM signal detection and subcarrier identification in the background of non-cooperative communication were deeply studied.Using the different distribution states of OFDM signals and single carrier signals in the time domain,a joint characteristic parameter was proposed to solve the existence problem of OFDM in the received signal.For the phase shift and frequency offset problems caused by the channel transmission to the signal,by using the periodic stability the blind parameter estimation was performed to obtain the signal prior information.On the basis of the obtained signal prior information,a multi-level classification and recognition method for non-cooperative OFDM signal sub-carrier signals was proposed.Therefore,a model based on non-cooperative communication system OFDM signal detection and subcarrier modulation identification was designed,and finally modulation identification of unknown signals was completed.Simulation experiments show that in non-cooperative communication systems,OFDM signals and single-carrier signals can be accurately identified,and ideal modulation recognition effects can be achieved on empty subcarriers,QPSK,and 16QAM in the receiver OFDM signal subcarriers,overcoming the channel transmission band The problems of phase shift and frequency offset have improved the accuracy of modulation mode identification.…”
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  8. 648

    Modeling Absorbed Energy in Microwave Range for Nanocomposite Hot Melts Containing Metallic Additives by Radu F. Damian, Romeo Cristian Ciobanu

    Published 2025-01-01
    “…The actual limitations of electromagnetic simulations are described, along with an application related to the Nicolson–Ross–Weir procedure in infinite media, which opens new perspectives in nanocomposite electromagnetic modeling. …”
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  9. 649

    Damping Multimode Switching Control of Semiactive Suspension for Vibration Reduction in a Wheel Loader by Tao Wei, Liu Zhiqiang

    Published 2019-01-01
    “…The multimode switching damping characteristics are achieved by just changing the discrete statuses of two high-speed switch electromagnetic valves, which makes the damping adjustment simpler and more reliable. …”
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  10. 650

    Three-Dimensional Memristive Hindmarsh–Rose Neuron Model with Hidden Coexisting Asymmetric Behaviors by Bocheng Bao, Aihuang Hu, Han Bao, Quan Xu, Mo Chen, Huagan Wu

    Published 2018-01-01
    “…Since the electrical activities of neurons are closely related to complex electrophysiological environment in neuronal system, a novel three-dimensional memristive Hindmarsh–Rose (HR) neuron model is presented in this paper to describe complex dynamics of neuronal activities with electromagnetic induction. The proposed memristive HR neuron model has no equilibrium point but can show hidden dynamical behaviors of coexisting asymmetric attractors, which has not been reported in the previous references for the HR neuron model. …”
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  11. 651

    Ultrarelativistic Spinning Particle and a Rotating Body in External Fields by Alexei A. Deriglazov, Walberto Guzmán Ramírez

    Published 2016-01-01
    “…Vector model in an arbitrary electromagnetic field leads to generalized Frenkel and BMT equations. …”
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  12. 652

    PROTOTIPE PAKAIAN ANTI RADIASI UNISEX SPORTSWEAR SMARTPHONE DENGAN PAPARAN RADIASI PLASMA PIJAR KORONA ELEKTRODA TIP- SILINDER by Valentinus Galih Vidia Putra, Annisa Diyan Fitri, Ichsan Purnama, Juliany Ningsih Mohamad

    Published 2020-04-01
    “…The result of thisresearchindicates that an anti-radiation clothe patch was succesfully shield an electromagnetic radiation from a smartphone.   Keywords: plasma discharge, unisex sportswear, tip-plane electrode, electromagnetic shielding …”
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  13. 653

    Synchronization of Two Self-Synchronous Vibrating Machines on an Isolation Frame by Chunyu Zhao, Qinghua Zhao, Zhaomin Gong, Bangchun Wen

    Published 2011-01-01
    “…The condition of implementing synchronization is that the torque of frequency capture between each pair of the unbalanced rotors on a vibrating machine is greater than the absolute values of the output electromagnetic torque difference between each pair of motors, and that the torque of frequency capture between the two vibrating machines is greater than the absolute value of the output electromagnetic torque difference between the two pairs of motors on the two vibrating machines. …”
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  14. 654

    A tunable multi-resonance 2D V-groove metasurface by Zhengqing Qi, Yipin Chen, Tianjing Zhao, Peng Chen, Huizhen Yang

    Published 2025-01-01
    “…Based on the electromagnetic enhancement mechanism, surface-enhanced Raman scattering (SERS) substrates with multi-resonance enhancement can achieve a higher enhancement factor (EF) by matching the resonance frequencies to both the excitation and Raman scattering frequencies. …”
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  15. 655

    Reimagining e+e− collider precision luminosity measurements by Wilson Graham, Madison Brendon

    Published 2024-01-01
    “…It will also serve as a general forward electromagnetic calorimeter helping ensure hermeticity and detecting individual electrons, positrons, and photons. …”
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  16. 656

    Antenna Optimization Based on Auto-Context Broad Learning System by Wei-Tong Ding, Fei Meng, Yu-Bo Tian, Hui-Ning Yuan

    Published 2022-01-01
    “…However, it is difficult to model the regression relationship between input and output variables in the electromagnetic field with the unsatisfactory fitting capability of the original BLS. …”
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  17. 657
  18. 658
  19. 659

    Single-cell bilayer design of a terahertz six-channel metasurface for simultaneous holographic and grayscale images by Zhiqiang Du, Chunhui Zhu, Zhengyong Song

    Published 2025-01-01
    “…Abstract Metasurfaces have exhibited excellent capabilities in controlling main characteristics of electromagnetic fields. Thus, a lot of significant achievements have been attained in many areas especially in the fields of hologram and near-field imaging. …”
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  20. 660

    A Rectangular Planar Spiral Antenna for GIS Partial Discharge Detection by Xiaoxing Zhang, Yefei Han, Wei Li, Xuetao Duan

    Published 2014-01-01
    “…It can expediently receive electromagnetic waves leaked from basin-type insulators and can effectively suppress low frequency electromagnetic interference from the surrounding environment. …”
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