Showing 421 - 440 results of 1,280 for search '"radio"', query time: 0.05s Refine Results
  1. 421

    Detecting the Black Hole Candidate Population in M51’s Young Massive Star Clusters: Constraints on Accreting Intermediate-mass Black Holes by Kristen C. Dage, Evangelia Tremou, Bolivia Cuevas Otahola, Eric W. Koch, Kwangmin Oh, Richard M. Plotkin, Vivian L. Tang, Muhammad Ridha Aldhalemi, Zainab Bustani, Mariam Ismail Fawaz, Hans J. Harff, Amna Khalyleh, Timothy McBride, Jesse Mason, Anthony Preston, Cortney Rinehart, Ethan Vinson, Gemma Anderson, Edward M. Cackett, Shih Ching Fu, Sebastian Kamann, Teresa Panurach, Renuka Pechetti, Payaswini Saikia, Susmita Sett, Ryan Urquhart, Christopher Usher

    Published 2025-01-01
    “…We explore the optical properties of the remaining 17 sources, including cluster age and mass estimates, and search for radio counterparts in the 8–12 GHz band. The lack of radio counterparts to X-ray sources we know to be associated with young massive star clusters in M51 suggests that we do not significantly detect hard-state intermediate-mass black holes (IMBHs)  ~10 ^4 M _⊙   or above. …”
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  2. 422

    Collaborative Cognitive Wireless Network Optimization Model and Network Parameter Optimization Algorithm by Tao Zhang

    Published 2023-01-01
    “…Such cognitive radio networks that use user collaboration to improve channel capacity and spectrum utilization are called collaborative cognitive radio networks. …”
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  3. 423

    Survey: Discovery in Wireless Sensor Networks by Valerie Galluzzi, Ted Herman

    Published 2012-01-01
    “…Wireless sensor networks often must operate under a more severe low-power regimen than do traditional ad hoc networks, notably by turning off radio for extended periods. Turning off a radio is problematic for neighbor discovery, and a balance is needed between adequate open communication for discovery and silence to conserve power. …”
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    Estimate Zinc-Oxide Particles on PMMA Mechanical Properties by Saja Ali Muhsin, Israa Mohammed Hummudi, Makarem A.R. Al-Ani

    Published 2022-06-01
    “…Unfortunately, it has shown to be lacking two important properties which are radio-opacity and mechanical strength. Zinc-oxide (ZnO) powder is widely used in dentistry and is considered a semiconductor material with the radio-opaque property. …”
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    Guest editorial: Advanced signal processing for integration of radar and communication (IRC) by Bin Liao, Wei Liu, Ziyang Cheng, Tianyao Huang

    Published 2022-09-01
    “…Abstract Radar and communication are two key applications of radio technology, and they occupy a large portion of the frequency spectrum. …”
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  12. 432

    A software-defined multi-modal wireless sensor network for ocean monitoring by Hanjiang Luo, Xu Wang, Ziyang Xu, Chao Liu, Jeng-Shyang Pan

    Published 2022-01-01
    “…To cope with the problems and meet demand for high-speed data transmission, we propose a radio frequency–acoustic software-defined networking-based multi-modal wireless sensor network which leverages benefits of both radio frequency and acoustic communication systems for ocean monitoring. …”
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  13. 433

    Minimized Low-Profile Wideband Antennas Using High Impedance Surface by Yizhu Shen

    Published 2017-01-01
    “…This paper proposes minimized low-profile wideband antenna by employing high impedance surface (HIS), for wireless application scenarios at radio frequency, microwave, and even terahertz. To validate this concept with low cost and easy measurement, two prototypes at radio frequency are fabricated and tested. …”
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    Robust Indoor Sensor Localization Using Signatures of Received Signal Strength by Yungho Leu, Chi-Chung Lee, Jyun-Yu Chen

    Published 2013-12-01
    “…First, we propose to use an index location to select the best radio map, among several preconstructed radio maps, for online location prediction. …”
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  16. 436

    Legal Regulation of Spreading Opinions and Beliefs through TV Broadcasting by S. A. Kucher

    Published 2021-07-01
    “…The general characteristics of monitoring and supervisory powers of the National Council on Television and Radio Broadcasting have been provided. The author has formulated propositions for amending the current legislation regulating the activities of the National Council on Television and Radio Broadcasting.…”
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  17. 437

    Exploiting Multiple Channels for Low Latency and Semireliable Broadcasting in Cognitive Wireless Sensor Networks by Tae-Sung Kim, Sok-Hyong Kim, Bo-Kyum Kim, Young-Yong Kim

    Published 2015-10-01
    “…For its high data rate requirement, IEEE 802.11 specification can be used for the radio interface of sensor nodes, and the nodes can be equipped with multiple 802.11 radios to utilize multiple channels and link data rates. …”
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  18. 438

    Electromagnetic Analysis and Experimental Validation of the LOFAR Radiation Patterns by Paola Di Ninni, Pietro Bolli, Fabio Paonessa, Giuseppe Pupillo, Giuseppe Virone, Stefan J. Wijnholds

    Published 2019-01-01
    “…Low-frequency (<300 MHz) aperture array systems are one of the new trends in modern radio astronomy. Among the challenges they pose, the instrumental calibration is a key aspect requiring an accurate and reliable model of each element of such electrically large array. …”
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