Showing 801 - 820 results of 1,540 for search '"electromagnetic"', query time: 0.07s Refine Results
  1. 801

    Analysis of Horn Antennas in Receiving Mode as an EM Field Sensor by Maifuz Ali, Seong-Ook Park

    Published 2012-01-01
    “…Electromagnetic (EM) field measurement uses antenna in receiving mode as EM field sensor (EMFS). …”
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  2. 802

    THE ECO-MAGNETIC TRAIN by Ana-Maria PĂTRĂȘCOIU

    Published 2023-05-01
    “…The energy used by the toy train is electrical, which is transformed, based on the phenomenon of electromagnetic interaction, into mechanical energy (the electric motor) The idea is to use this kind of energy in the future to reduce pollution, thus creating a dynamic, stable balance between nature and means of transport, electric motors To illustrate the ecosystem, polystyrene, sand, lichens, cardboard were used, and for the magnetic toy train a copper wire, batteries, magnets were used, …”
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  3. 803

    Bayesian Nonparametric Modeling for Rapid Design of Metamaterial Microstructures by Bin Liu, Chunlin Ji

    Published 2014-01-01
    “…A Bayesian nonparametric model, namely, Gaussian Process (GP) mixture, is developed to generate the mapping relationship from the microstructure’s geometric dimension to the electromagnetic response, which is approximately expressed in a closed form of Drude-Lorentz type model. …”
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  4. 804

    Analysis and verification on one-dimensional location performance of shortwave single station by Ting LI

    Published 2018-09-01
    “…With the low sensitivity of beam field and noise-sensitive of high resolution spatial spectrum algorithm,the low location precision under the complex electromagnetic environment becomes a severe problem.The Capon and Root-MUSIC (CRMU) joint algorithm was proposed to research the one-dimensional location technology.The proposed algorithm could not only avoid the high operation caused by the peak search but also suppress the noise,which contributed to reduce the root mean square error (RMSE) of azimuth.Then,the simulation results demonstrate that the RMSE of the proposed algorithm is at least 0.2 degrees less than that of the Root-MUSIC algorithm.In addition,the location error of the proposed algorithm is less than 3% in the practical application of one-dimensional location of shortwave single station,which satisfies the demand that the location error should be below 5%.…”
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  5. 805

    Sensor-Driven Preliminary Wing Ground Plane Sizing Approach and Applications by Ankur S. Patil, Emily J. Arnold

    Published 2018-01-01
    “…Relationships for wing span, wing chord, and thickness are derived from extensive parametric electromagnetic simulations based on optimum antenna performance. …”
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  6. 806

    Relativistic Binary Precession: Impact on Eccentric Massive Binary Black Hole Accretion and Hydrodynamics by Stanislav DeLaurentiis, Zoltán Haiman, John Ryan Westernacher-Schneider, Luke Major Krauth, Jordy Davelaar, Jonathan Zrake, Andrew MacFadyen

    Published 2025-01-01
    “…We find that the GR precession of the binary's semimajor axis can introduce a dominant modulation in the binary's accretion rate and the corresponding high-energy electromagnetic light curves. We discuss the conditions under which this occurs and its detailed characteristics and mechanism. …”
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  7. 807

    Dirichlet Type Problem for 2D Quaternionic Time-Harmonic Maxwell System in Fractal Domains by Yudier Peña Pérez, Ricardo Abreu Blaya, Paul Bosch, Juan Bory Reyes

    Published 2020-01-01
    “…We investigate an electromagnetic Dirichlet type problem for the 2D quaternionic time-harmonic Maxwell system over a great generality of fractal closed type curves, which bound Jordan domains in R2. …”
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  8. 808

    Optimization Design of Concentric Magnetic Gear based on Genetic Algorithm Toolbox of Matlab by Jing Libing, Gao Qixing, Liu Lin, Li Hao, Su Jianhua

    Published 2016-01-01
    “…The model of the improved magnetic gear is simulated by using two dimensional(2D) finite element(FE) method,and the magnetic field and electromagnetic torque are calculated. At the same time,the magnetic field and torque are compared with the common gear. …”
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  9. 809

    Active defense technology against intelligent jammer by Zhibin FENG, Yuhua XU, Zhiyong DU, Xin LIU, Wen LI, Hao HAN, Xiaobo ZHANG

    Published 2022-10-01
    “…In the complex electromagnetic countermeasure environment, the intelligent development of jammer has caused a serious threat to wireless communication, while the traditional anti-jamming methods often passively adjusted the working mode or parameters, which will be at a disadvantage or even suppressed in the face of intelligent jammer.To solve this problem, a technical framework of active defense against jammer was proposed, aiming to disrupt the learning process of the intelligent jammer and reduce the jamming efficacy.In order to gradually achieve the goals of “understanding opponent”“controlling opponent” and “defeating opponent”, under the guidance of game theory and adversarial machine learning, the key technologies were discussed from three aspects: backward reasoning of jammer, algorithm vulnerability analysis and confrontational strategy design, independent optimization and online decision-making of anti-jamming strategy.Finally, combined with two specific cases, the feasibility and effectiveness of the proposed technical framework were verified.…”
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  10. 810

    Pattern Synthesis of Linear Antenna Arrays Using Enhanced Flower Pollination Algorithm by Urvinder Singh, Rohit Salgotra

    Published 2017-01-01
    “…LAA design is a tricky and difficult electromagnetic problem. Hence to check the efficacy of the proposed algorithm it has been used for synthesis of four different LAA with different sizes. …”
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  11. 811

    Computational Modelling of Blood Flow Development and Its Characteristics in Magnetic Environment by Gopal Chandra Shit

    Published 2013-01-01
    “…In order to get better interpretation of scan MRI images, the characteristics of blood flow and electromagnetic field within the circulatory system have to be furthermore investigated. …”
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  12. 812

    Spectral narrowing in the resonance fluorescence of a driven V-type quantum emitter near a two-dimensional plasmonic nanostructure array by Spyridon G. Kosionis, Vassilios Yannopapas, Emmanuel Paspalakis

    Published 2025-01-01
    “…The V-type quantum system is driven by a coherent electromagnetic field whilst quantum interference effects in the spontaneous emission due to the presence of the plasmonic nanostructure are accounted for. …”
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  13. 813

    Scrutinizing the dielectric properties of dialysis fluid for health monitoring applications by Sina Rahmani Charvadeh, Javad Ghalibafan

    Published 2025-01-01
    “…Abstract The concept of permittivity properties of dialysate allows the use of electromagnetic sensing techniques in hemodialysis treatment. …”
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  14. 814

    Exact Relativistic Magnetized Haloes around Rotating Disks by Antonio C. Gutiérrez-Piñeres, Abraão J. S. Capistrano

    Published 2015-01-01
    “…All the relevant quantities and the metric and electromagnetic potentials are exactly determined by an arbitrary harmonic function only. …”
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  15. 815

    Application of reconfigurable intelligent surface in beamforming and information modulation by Qiang CHENG, Junyan DAI, Junchen KE, Jingcheng LIANG, Siran WANG

    Published 2021-09-01
    “…In modern mobile communications, the randomness, uncertainty, and uncontrollability of wireless channels are the pivotalfactors that affect the communication quality, which often leads to the deterioration of the signal quality at the receiving terminal, and thereby limiting the rate and range of information transmission.In the emerging study of 6G technology, reconfigurable intelligent surface is one of the research directions under active discussions, which is an ultra-thin artificial surface composed of sub-wavelength structures with field programmability and spatiotemporal information modulation capabilities.The reconfigurable intelligent surface can manipulate electromagnetic waves accurately and efficiently, thus providing the possibility for reshaping the wireless propagation environment.In this review, the concept of the reconfigurable intelligent surface, the beam forming method based on spatiotemporal modulation, the wireless relay and the communication system based on the reconfigurable intelligent surface were reviewed and discussed.It demonstrates the great potential of reconfigurable intelligent surface in assisting mobile communication, and provides new ideas for the development of 6G.…”
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  16. 816

    Microstrip Patch Antenna Bandwidth Enhancement Using AMC/EBG Structures by R. C. Hadarig, M. E. de Cos, F. Las-Heras

    Published 2012-01-01
    “…A microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor (AMC)/electromagnetic band-gap structure (EGB) is presented. …”
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  17. 817

    Design of Clamping Mechanism for Transmission Tower Climbing Robots by Lijun Wang, Ruxuan Wang, Yangbin Wang, Xiangyang Li, Zhiguang Zhang, Lijian Li

    Published 2022-04-01
    “…At the same time,the electromagnet adsorbs the angle steel to realize the double clamping of the angle steel,which effectively resists the danger of overturning and falling off of the climbing robot on the iron tower. …”
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  18. 818

    Performance analysis and power optimization for FH secure communication under frequency and phase mismatch by Changqing SONG, Hongzhi ZHAO, Lizhi QIN, Shihai SHAO

    Published 2022-09-01
    “…The artificial noise (AN) shielded frequency hopping (FH) secure communication can counteract electromagnetic interference and wiretapping, but its carrier frequencies change rapidly within a wide bandwidth which will raise the level of carrier frequency offset and phase noise, yielding AN cancellation performance degradation.To tackle this, the signal distortion caused by frequency and phase mismatch (FPM) was mathematically modeled, the AN cancellation performance was evaluated via signal-to-noise ratio, and the system secrecy was scaled via secrecy capacity.On basis of this, the optimal power allocation scheme for AN and confidential signal was designed, and the scheme was expanded according to the FPM level and the propagation channel quality.Numerical simulations verify that FPM can significantly degrade the noise cancellation performance and system secrecy, and to counteract this, the power ratio of AN to confidential signals should decrease with an increasing FPM.…”
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  19. 819

    Influence of Surface Morphology on Absorptivity of Light-Absorbing Materials by Chunhui Niu, Ting Zhu, Yong Lv

    Published 2019-01-01
    “…., V-type groove surface, sinusoidal surface, and random distribution, is investigated using a rigorous electromagnetic theory and a finite element method. Influences of surface contour parameters (span distance, intersection angle, and height) and light wave parameters (incident angle and wavelength) on absorptivity are numerically simulated and analyzed for the three kinds of surfaces, respectively. …”
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  20. 820

    Design and Implementation of RF Communication Module in Intelligence Home by Yan Zeng, Wenbin2 Cheng, Yuehong Dai

    Published 2014-07-01
    “…Simulated FIFO buffer is used to ensure no loss of data while anti-collision function is realized by checking the frequency of electromagnetic wave before sending data. Test results show that this module can meet the demand of low cost, low power consumption and long distance wireless transmission.…”
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