Showing 841 - 860 results of 1,280 for search '"radio"', query time: 0.07s Refine Results
  1. 841

    Jamming-resilient algorithm for underwater cognitive acoustic networks by Zixiang Wang, Fan Zhen, Senlin Zhang, Meiqin Liu, Qunfei Zhang

    Published 2017-08-01
    “…In the underwater cognitive acoustic networks, the anti-jamming problem is quite different from cognitive radio networks. It calls for an effective anti-jamming strategy in the cognitive acoustic channel access. …”
    Get full text
    Article
  2. 842

    Spiral Slotted Microstrip Antenna Design for 700 MHz Band Application by Ricardo Meneses González, R. Linares y Miranda, R. Leyva Hernández

    Published 2016-01-01
    “…This technological advance represents a radio mobile antenna design challenge because it is necessary to design an antenna whose dimensions must be small enough, which satisfies gain, resonance frequency, and bandwidth requirements and is of low cost.…”
    Get full text
    Article
  3. 843

    Efficiency Improvements of Antenna Optimization Using Orthogonal Fractional Experiments by Yen-Sheng Chen, Ting-Yu Ku

    Published 2015-01-01
    “…The capability of orthogonal fractional experiments is demonstrated through three examples, including two tag antennas for radio-frequency identification (RFID) applications and one internal antenna for long-term-evolution (LTE) handheld devices. …”
    Get full text
    Article
  4. 844

    Interactive Visualization of the Printed Circuits Tracing Algorithms for Educational Purposes by D. O. Petrov

    Published 2023-02-01
    “…The use of the development is justified when giving lectures and conducting laboratory research on the theoretical foundations of automation systems for the design of radio electronic equipment and contributes to solving the complex problem of digitalization of the educational process with the help of visualization programs that allow you to observe the results of the algorithms they implement on various sets of initial data.…”
    Get full text
    Article
  5. 845

    Response of negative ion beamlet width and axis deflection to RF field in beam extraction region by Kenichi Nagaoka, Haruhisa Nakano, Taiga Hamajima, Ryoya Nakamoto, Katsuyoshi Tsumori, Masaki Osakabe, Masashi Kisaki, Kenji Miyamoto, Kazunori Takahashi, Ursel Fantz

    Published 2025-01-01
    “…Abstract Beam-divergence characteristics of single negative ion beamlet have been experimentally investigated with a superimposition of a controlled perturbation of a radio frequency wave (RF) field in a filament-arc discharge negative ion source. …”
    Get full text
    Article
  6. 846

    A Novel Audio Cryptosystem Using Chaotic Maps and DNA Encoding by S. J. Sheela, K. V. Suresh, Deepaknath Tandur

    Published 2017-01-01
    “…The various types of analysis revealed that the algorithm is suitable for narrow band radio communication and real-time speech encryption applications.…”
    Get full text
    Article
  7. 847

    Balancing the Potential Gauging Process Applied to Wave Propagation for Arbitrary Space-Times by Thomas Reum

    Published 2025-01-01
    “…This article addresses possibilities to compensate an unwanted side effect arising in the widely used gauging process of electrodynamic potentials due to mathematical conditions applied to describe propagating electromagnetic (EM) waves with a focus on radio frequency (RF). Previous studies have shown by means of guided propagation that phase velocities which differ from intuitive understanding occur for several components of potentials when deviating from a specific gauge determined by physical relationships. …”
    Get full text
    Article
  8. 848

    Recent Developments on Hybrid Time-Frequency Numerical Simulation Techniques for RF and Microwave Applications by Jorge F. Oliveira, José C. Pedro

    Published 2013-01-01
    “…Because of the modulated nature of radio frequency (RF) signals, the corresponding electronic circuits seem to operate in a slow time scale for the aperiodic information and another, much faster, time scale for the periodic carrier. …”
    Get full text
    Article
  9. 849

    Toward More Efficient and More Secure Last Mile Smart Metering and Smart Lighting Communication Systems with the Use of PLC/RF Hybrid Technology by Piotr Kiedrowski

    Published 2015-10-01
    “…Theoretical considerations, contained in the paper, are the result of the author's experience in the design, implementation, and operation of the last mile Smart Grid communication systems, realized in the narrowband PLC or 433/868 MHz radio technology. These communication systems were developed for data acquisition and distribution between specific terminals, which are Smart Meters or Smart Lanterns. …”
    Get full text
    Article
  10. 850
  11. 851
  12. 852

    An Intercomparison of GPS RO Retrievals with Colocated Analysis and In Situ Observations within Tropical Cyclones by Henry R. Winterbottom, Qingnong Xiao

    Published 2010-01-01
    “…Observations from four Global Position System (GPS) Radio Occultation (RO) missions: Global Positioning System/Meteorology, CHAallenging Minisatellite Payload, Satellite de Aplicaciones Cientificas-C, and Constellation Observing System for Meteorology, Ionosphere and Climate and Taiwan's FORMOsa SATellite Mission #3 (COSMIC/FORMOSAT-3) are collected within a 600 km radius and ±180 minute temporal window of all observed tropical cyclones (TCs) from 1995 to 2006 that were recorded in the global hurricane best-track reanalysis data set (Jarvinen et al. (1984); Davis et al. (1984)). …”
    Get full text
    Article
  13. 853
  14. 854

    Backpropagation-Based Cooperative Localization of Primary User for Avoiding Hidden-Node Problem in Cognitive Networks by Lin Liu, Zhengyi Li, Chi Zhou

    Published 2010-01-01
    “…Cognitive radio (CR) is a technology to implement opportunistic spectrum sharing to improve the spectrum utilization. …”
    Get full text
    Article
  15. 855

    Nondestructive Measurement of Momentum Transfer Collision Frequency for Low Temperature Combustion Plasma by Douglas Letsholathebe, Kgakgamatso M. Mphale, Samuel Chimidza

    Published 2014-01-01
    “…There are anecdotal reports of severe line-of-sight (LOS) radio frequency signal degradation on firegrounds. …”
    Get full text
    Article
  16. 856

    A Novel Decentralized Scheme for Cooperative Compressed Spectrum Sensing in Distributed Networks by Huang Jijun, Zha Song

    Published 2015-08-01
    “…However, the computation overhead incurred by compressed reconstruction is nontrivial, especially in a power-constrained cognitive radio (CR). Moreover, additional information, which is generally unavailable in practice, is needed in conventional CS-based wideband spectrum sensing schemes to improve the reconstruction quality as well as the detection performance. …”
    Get full text
    Article
  17. 857

    Promoting HIV/AIDS Prevention through Soap Operas by William Brown, Steven Kiruswa, Steven Kiruswa, Benson P. Fraser Benson P. Fraser

    Published 2022-10-01
    “…In the 1990s, the country of Tanzania broadcast a highly effective radio soap opera to promote HIV/AIDS prevention. …”
    Get full text
    Article
  18. 858

    ONLINE VS TRADITIONAL; MARKETING CHALLENGE IN THE TELECOM MARKET IN BOSNIA AND HERZEGOVINA by Tarik Zaimović, Adnan Suturović

    Published 2018-05-01
    “…Social networks are the marketing communication medium preferred by most of the telecomm users in BiH, followed by television, billboards, text messages, company web page, web advertisements, newspapers, e-mail, and the radio. The results presented in this paper consider consumers’ behavior in one of the most dynamic BiH sectors, and provide an insight in the specific media channel of marketing communication. …”
    Get full text
    Article
  19. 859
  20. 860

    (1→3)-β-D-glucan in patients with pulmonary aspergilloma by Kazumi Yuasa, Hajime Goto

    Published 1997-01-01
    “…Other parameters, such as galactomannan, immunodiffusion and a radio-allergosorbent test, as well as inflammatory m arkers such as C-reactive protein and the leukocyte count, did not show any consistent tendency in regard to the activity of the disease. …”
    Get full text
    Article