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  1. 141

    Some aspects of ion-acoustic whistlers in the ionosphere in the presence of negative ions by A. K. Sur, G. C. Das, B. Chakraborty, S. N. Paul, L. Debnath

    Published 1989-01-01
    “…A study is made of the propagation of ion-acoustic whistlers in the atmosphere including the effects of negative ions. …”
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  2. 142

    Acoustical Source Tracing Using Independent Component Analysis and Correlation Analysis by Wei Cheng, Zhousuo Zhang, Jie Zhang, Jiantao Lu

    Published 2015-01-01
    “…Acoustical signals from mechanical systems reveal the operating conditions of mechanical components and thus benefit for machinery condition monitoring and fault diagnosis. …”
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  5. 145

    Transfer scattering matrix of non-uniform surface acoustic wave transducers by N. C. Debnath, T. Roy

    Published 1987-01-01
    Subjects: “…surface acoustic waves…”
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    Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution by Zhijie Wen, Xiao Wang, Lianjun Chen, Guan Lin, Hualei Zhang

    Published 2017-01-01
    “…The results show that coal-rock size influences the uniaxial compressive strength, peak strain, and elastic modulus of itself; the size effect has little effect on the acoustic emission law of coal-rock damage and the effects of the size of coal-rock samples on acoustic emission characteristics are mainly reflected in three aspects: the triggering time of acoustic emission, the strain range of strong acoustic emission, and the intensity of acoustic emission; the damage evolution of coal-rock specimen can be divided into 4 stages: initial damage, stable development, accelerated development, and damage.…”
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  9. 149

    Doppler Estimation Based on Frequency Average and Remodulation for Underwater Acoustic Communication by Chan-Ho Hwang, Ki-Man Kim, Seung-Yong Chun, Sang-Kook Lee

    Published 2015-11-01
    “…Underwater acoustic communication channel is time varying and has Doppler effect due to wind, sea surface roughness, and platform motion. …”
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    Chinese Alaryngeal Speech Rehabilitation and Their Acoustical Characteristics: A Comprehensive Review by Lawrence Ng Manwa, Mingyue XIONG

    Published 2015-08-01
    “…The present paper discusses various alaryngeal phonation and reviews the acoustic, perceptual, and aerodynamic characteristics associated with the four alaryngeal speech, with a special focus on Mandarin and Cantonese Chinese.…”
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  12. 152

    Performance Comparison of Doppler Scale Estimation Methods for Underwater Acoustic OFDM by Lei Wan, Zhaohui Wang, Shengli Zhou, T. C. Yang, Zhijie Shi

    Published 2012-01-01
    “…Doppler scale estimation is one critical step needed by the resampling operation in acoustic communication receivers. In this paper, we compare different Doppler scale estimation methods using either cyclic-prefixed (CP) or zero-padded (ZP) orthogonal-frequency division-multiplexing (OFDM) waveforms. …”
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    Loop Assisted Synchronization-Free Localization for Underwater Acoustic Sensor Networks by Song Zhang, Deshi Li, Lei Li, Zilong Liao

    Published 2014-10-01
    “…Underwater acoustic sensor networks (UASNs) have attracted significant attention recently. …”
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  16. 156
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    Doppler auxiliary time synchronization algorithm for underwater acoustic sensor network by Xiao-ning FENG, Zhuo WANG, Xiao-long ZHU, Wen ZHANG

    Published 2017-01-01
    “…Time synchronization problem in underwater acoustic sensor networks (UWSN) was studied.Due to the propagation of acoustic signals in underwater environment and nodes movement bring some problems to time synchronization.A distributed time synchronization algorithm was proposed based on Doppler method,called NU-Sync.NU-Sync solved the problem of uncertainty propagation delay caused by nodes movement through calculating relative velocity.And autonomous underwater vehicle (AUV) was used as beacon node which can save energy consumption in the process of calculation clock skew.Simulation resulted show NU-Sync achieves high level time synchronization precision.…”
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    Investigation on Acoustic Properties of Thruster Chamber with Coaxial Injectors and Plenum Chamber by Dekun Gao, Jianxiu Qin, Huiqiang Zhang

    Published 2020-01-01
    “…FFT analysis is applied to obtain the acoustic properties of eigenfrequencies, power amplitudes, and damping rates for each excited acoustic mode. …”
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