Showing 121 - 140 results of 472 for search '"waveform"', query time: 0.05s Refine Results
  1. 121

    Prediction of Frequency for Simulation of Asphalt Mix Fatigue Tests Using MARS and ANN by Ali Reza Ghanizadeh, Mansour Fakhri

    Published 2014-01-01
    “…It is furthermore shown that the results of the present study can be generalized to sinusoidal waveform by a simple equation.…”
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  2. 122

    UWB pulse design method based on approximate prolate spheroidal wave functions by LU Yin, ZHU Hong-bo

    Published 2005-01-01
    “…Coexistence and compatibility was an important issue needed to be considered in ultra-wideband (UWB) impulse radio communications.To avoid interference,one of the effective methods was to design appropriate pulse waveform.UWB pulse design algorithm was established,the approximate solution to the prolate spheroidal wave functions (PSWF) was analyzed,a pulse design method was proposed by using the approximate prolate spheroidal wave functions (APSWF).The mathematical expression of APSWF was simple and explicit.The simulation shows that pulse based on APSWF meets the power spectral constraint of the FCC’s spectral mask.The APSWF-based pulse waveform can be flexibly adjusted by this method when the spectral mask changes.…”
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  3. 123

    Development of a Comprehensive Comparison Software for Automated Decision-Making in Impulse Testing of Power Transformers, Including a Review of Practices from Analog to Digital by Welson Bassi

    Published 2025-01-01
    “…These tests presume linearity in the overall system and equipment being tested. They compare waveforms at reduced and full impulse levels to detect or enhance insulation failures. …”
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  4. 124

    A Space-Vector Analysis of the Twelve-Pulse Diode Bridge Rectifier Operation for the Auxiliary Circuit Current Determination Providing the Optimal Line Currents’ THD by Jaroslaw Rolek, Grzegorz Utrata

    Published 2024-12-01
    “…The fundamental approach to limit the line currents’ total harmonic distortion (THD) introduced by the diode bridge rectification systems is based on increasing the number of steps in their waveform per power supply cycle and drawing them closer to the pure-sine waveforms. …”
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  5. 125

    The Diagnosis and Treatment of Infantile Nystagmus Syndrome (INS) by Sangeeta Khanna, Louis F. Dell'Osso

    Published 2006-01-01
    “…The use of the eXpanded Nystagmus Acuity Function (NAFX) on nystagmus data yields both an accurate measure of foveation quality and a prediction of maximum potential acuity for the patient's waveform. When used with the patient's measured, pre-therapy visual acuity, the NAFX demonstrates the amount of visual acuity loss that is due to sensory abnormalities, demonstrates the amount due to the nystagmus waveform, and estimates the measured post-therapy acuity for all values of improved NAFX and gaze angles measured. …”
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  6. 126

    Exact Solutions of Damped Improved Boussinesq Equations by Extended (G′/G)-Expansion Method by Kai Fan, Cunlong Zhou

    Published 2020-01-01
    “…With the help of the auxiliary function method, we solved the improved Boussinesq (IBq) equation with fluid dynamic damping and the modified IBq (IMBq) equation with Stokes damping, and we obtained their three types of travelling wave exact solutions, which is an extension service of the numerical simulation and the existence of a solution. From the waveform diagram of IBq equation with hydrodynamic damping, it can be seen that when the propagation velocity of kink wave changes, the amplitude also changes significantly, and it is also found that the kink isolated waveform is significantly asymmetric due to the increase of damping coefficient v, which may be of some value in explaining some physical phenomena. …”
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  7. 127

    Energy Sharing and Performance Bounds in MIMO DFRC Systems: A Trade-Off Analysis by Ziheng Zheng, Xiang Liu, Tianyao Huang, Yimin Liu, Yonina C. Eldar

    Published 2024-01-01
    “…We analyze the properties of the performance bound and the corresponding waveform design strategy to achieve the bound. When the downlink user and the radar target meet certain conditions, we obtain analytical expressions for the bound and the corresponding waveform design strategy. …”
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  8. 128

    Research of the Influence of Tooth Profile Modification on the Tooth Surface Vibration Noise of Automobile Transmission Gear by Pan Haibo

    Published 2016-01-01
    “…Through the experiment analysis,it is found that gear meshing noise is an important factor affecting the size and orientation of overall waveform,the modification of gear noise waveform amplitude with respect to time domain fitting before modification is weakened,the impact decreased significantly.At the same time,the main test box vibration and noise are collected by real- time to contrast the noise samples before and after the modification. …”
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  9. 129

    Multistage identification method for real-time abnormal events of streaming data by Hao Luo, Kexin Sun, Junlu Wang, Chengfeng Liu, Linlin Ding, Baoyan Song

    Published 2019-12-01
    “…The current mine disaster event monitoring method is a lagged identification, which is based on monitoring a series of sensors with a 10-s-long data waveform as the monitoring unit. The identification method proposed in this article first takes advantages of the dynamic time warping algorithm, which is widely applied in the field of audio recognition, to build an anti-aliasing model and identifies whether the perceived data are disaster signal based on the similarity fitting between them and the template waveform of historical disaster data, and second, since the real-time monitoring data are continuous streaming data, it is necessary to identify the start point of the disaster waveform before the identification of the disaster signal. …”
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  10. 130

    Study on Abnormal Transmission of Date Frames Based on PT-CAN Bus by Wen Fang, Chunhua Zhang, Yangyang Li, Baopeng Zhao

    Published 2022-01-01
    “…Experimental results indicate that abnormal data transmission may cause abnormal signal waveform of PT-CAN bus, and the different PT-CAN signal clutter has certain different forms and reasons. …”
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  11. 131

    Fast link-establishment method of integrated of communication and detection based on short-wave digital channelization by Guojun LI, Cuiling XIANG, Changrong YE, Zunli WANG

    Published 2023-01-01
    “…A link-establishment method based on short-wave digital channelized receiver was proposed for the traditional automatic link establishment technology in short-wave communications with the low accuracy of frequency selection, low efficiency of link establishment, and low utilization of resources, etc.The parallel receiving mechanism for full frequency band in short-wave communications was realized by using digital channelization.An integrated waveform of communication and detection was designed to deal with the time redundancy and equipment compatibility problems caused by waveform switching during link establishment.A fast link-establishment method was designed, to achieve a fast and robust connection in complex electromagnetic environments.The results show that the channelized structure can enhance the receiving performance of the link-establishment system, the link-establishment method has obvious advantages, channel parameter estimation method has a high estimation accuracy compared to the traditional link-establishment method and the applicability of the proposed method in practical short-wave channel environment is verified.…”
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  12. 132

    Overview of research progress on blind separation methods for single channel communication signal by Wen DENG, Zhitao HUANG, Xiang WANG

    Published 2023-08-01
    “…Significant progress has been made in the research of single channel blind signal separation (SCBSS) methods, as the theoretical and practical applications of SCBSS technology have been continuously improved.A new classification framework for blind signal separation (BSS) of communication signal problems was proposed based on an analysis of a large number of academic research results from both domestic and international sources.The division of SCBSS problems into four levels: multi-signal waveform separation, single-signal waveform separation, multi-signal symbol sequence separation, and single-signal symbol sequence separation was determined by taking into consideration the demand for output results of BSS systems in different application scenarios.Subsequently, the research status of SCBSS methods was systematically reviewed.Furthermore, the current research status of data-driven SCBSS was summarized, and the problems and solutions that needed to be addressed in data-driven SCBSS technology were explored.Finally, several potential research directions for SCBSS were analyzed and forecasted.The aim is to provide a reference for the research and application of SCBSS.…”
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  13. 133

    Inception neural network for human activity recognition using wearable sensor by Duo CHAI, Cheng XU, Jie HE, Shao-yang ZHANG, Shi-hong DUAN, Yue QI

    Published 2017-11-01
    “…The experience from computer vision was learned,an innovative neural network model called InnoHAR (inception neural network for human activity recognition) based on the inception neural network and recurrent neural network was put forward,which started from an end-to-end multi-channel sensor waveform data,followed by the 1×1 convolution for better combination of the multi-channel data,and the various scales of convolution to extract the waveform characteristics of different scales,the max-pooling layer to prevent the disturbance of tiny noise causing false positives,combined with the feature of GRU helped to time-sequential modeling,made full use of the characteristics of data classification task.Compared with the state-of-the-art neural network model,the InnoHAR model has a promotion of 3% in the recognition accuracy,which has reached the state-of-the-art on the dataset we used,at the same time it still can guarantee the real-time prediction of low-power embedded platform,also with more space for future exploration.…”
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  14. 134

    RESEARCH ON RIGID-FLEXIBLE COUPLING SYSTEM OF 1/4 VEHICLE-BEAM EXPANSION JOINT (MT) by GAO Bin, WANG ShaoHua, ZHANG Lu

    Published 2023-01-01
    “…The results show that the simulation waveform of the new coupling system is consistent with the traditional method and the waveform is sensitive to the two influence factors in the coupling system, which verifies the good contact dynamic characteristics of the coupling system, the contact stability of the beam body can be improved by strengthening the connection between the side beam and the beam body and the end structure, the car with the new type of tire should not exceed 80 km/h when passing the seam. …”
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  15. 135

    Gravitational Waves from Black Hole Emission by Tousif Islam, Gaurav Khanna, Steven L. Liebling

    Published 2025-01-01
    “…We anticipate that these (incomplete but) initial simulations, coupled with the adjusted waveform models, will aid in the development of null tests for GR using GWs.…”
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  16. 136

    Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage by Haitao Li, Dewen Zheng, Kang Li, Qiqi Wanyan, Lina Ran, Yanxia Kou, Song Bai, Jianan Wu, Jianchao Jia, Yunfei Wen, Yuanqing Wang, Hongyan Xing, Kuoyuan Zhu, Jingen Deng

    Published 2025-01-01
    “…This peak forms a circular feature with the cavity roof reflection waveform, and the residue’s top surface is always located in the upper half of this circular waveform. …”
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  17. 137

    Design and verification of monitoring system of DC microgrid based on Ethernet communication by Lirong Zhang, Xianwen Bao

    Published 2024-12-01
    “…The parameters of the inverter can be adjusted, and the output voltage waveform and sinusoidal pulse width modulation waveform of the inverter can be measured. …”
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  18. 138

    WPD-Based Noise Reduction for Microseismic Data Through Adaptive Coefficient Shrinkage and Multi-Basis Fusion by Yaqi Zhang, Zhiqiang Lan, Zheng Shi, Yuhang Xue, Jie Wang, Kun Zhu, Jian He, Xiujian Chou

    Published 2024-01-01
    “…Firstly, this method utilizes energy filtering to eliminate noise that is not temporally correlated with microseismic waveforms, then employs time-varying thresholds to refine the edges of these waveforms, effectively leveraging time and amplitude information to preserve the details of waveform edge. …”
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  19. 139

    A Low Complexity Dual-Phase Alternating Scheme is Used With the PTS Method to Reduce PAPR for B5G Systems by Yung-Ping Tu, Chen-Wei Hsu

    Published 2025-01-01
    “…To deal with this problem, we propose an efficient two-stage scheme to alleviate PAPR obsession in OFDM, F-OFDM, and UFMC waveforms, named dual-phase alternating partial transmission sequence (DPA-PTS). …”
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  20. 140

    In silico analysis of ventricular action potential with a current–voltage‐time representation: Thresholds, membrane resistance, repolarization reserve by Massimiliano Zaniboni

    Published 2024-11-01
    “…Abstract The waveform of ventricular action potential (AP) is a key determinant of the cardiac cycle, a marker of beating pathophysiology, and a target for anti‐arrhythmic drug design. …”
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