Showing 301 - 320 results of 472 for search '"waveform"', query time: 0.04s Refine Results
  1. 301

    Are Anesthesiology Providers Good Guessers? Heart Rate and Oxygen Saturation Estimation in a Simulation Setting by Efrain Riveros Perez, Enoe Jimenez, Camila Albo, Yashi Sanghvi, Nianlan Yang, Alexander Rocuts

    Published 2019-01-01
    “…Two baseline scenarios with and without waveform visual aid, and two scenarios with variation of heart rate and/or oxygen saturation were used to assess the accuracy of the estimation made by the participants. …”
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    Article
  2. 302

    Experimental and Numerical Evaluation of Rock Dynamic Test with Split-Hopkinson Pressure Bar by Kang Peng, Ke Gao, Jian Liu, Yujiao Liu, Zhenyu Zhang, Xiang Fan, Xuyan Yin, Yongliang Zhang, Gun Huang

    Published 2017-01-01
    “…The results show that the dispersion effect on the diameter of input bar, loading rate, and propagation distance under half-sine waveform loading is ignorable compared with the rectangle wave loading. …”
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  3. 303

    Axial Compression Behavior of Novel Latticed Columns with CFST Tubes and Corrugated Steel Plates for Industrial Structures by Xuan Zhao, Ningning Zhang, Zhaohui Hu, Xian Li, Ying Nie, Jun Liu

    Published 2024-12-01
    “…The analytical parameters included the yield strength of steel tube and compressive strength of concrete, the waveform of corrugated steel plate, as well as the thickness, yield strength, and configuration of steel lacing tubes. …”
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  4. 304

    Evaluating Wireless Power Transfer Technologies for Electric Vehicles: Efficiency and Practical Implementation of Inductive, Capacitive, and Hybrid Systems by Thamvarit Singhavilai, Jarurote Tippayachai, Kamon Jirasereeamornkul, Chainarin Ekkaravarodome, Taweesak Samanchuen

    Published 2025-01-01
    “…The results demonstrated that IPT achieved higher efficiency, smoother waveforms, and lower EMF exposure than CPT and HPT at lower frequencies. …”
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    Article
  5. 305

    Aftershock Spatiotemporal Activity and Coseismic Slip Model of the 2022 Mw 6.7 Luding Earthquake: Fault Geometry Structures and Complex Rupture Characteristics by Qibo Hu, Hongwei Liang, Hongyi Li, Xinjian Shan, Guohong Zhang

    Published 2024-12-01
    “…A machine learning approach is applied to extract a high-quality aftershock catalog from the original seismic waveform data, enabling the analysis of the spatiotemporal characteristics of aftershock activity. …”
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  6. 306

    Remodeling the light-adapted electroretinogram using a bayesian statistical approach by Marek Brabec, Fernando Marmolejo-Ramos, Lynne Loh, Irene O. Lee, Mikhail Kulyabin, Aleksei Zhdanov, Hugo Posada-Quintero, Dorothy A. Thompson, Paul A. Constable

    Published 2025-01-01
    “…Abstract Objective To present a remodeling of the electroretinogram waveform using a covariance matrix to identify regions of interest and distinction between a control and attention deficit/hyperactivity disorder (ADHD) group. …”
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  7. 307

    Influence of Messa di Voce speed on vocal stability of untrained, healthy subjects. by Jonas Kirsch, Marie Köberlein, Michael Döllinger, Matthias Echternach

    Published 2025-01-01
    “…Subsequently, the Glottal Area Waveform was extracted from the HSV data. The tasks' duration and calculated parameters (including, e.g., Open Quotient (OQ), Closing Quotient (ClQ), Relative Average Perturbation (RAP)), excluding parts of the signal with stationary sound pressure level (SPL), were analyzed with correlation analysis and statistical analysis (Analysis of Variance and subsequent multiple comparisons).…”
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  8. 308

    Canopy Height Integration for Precise Forest Aboveground Biomass Estimation in Natural Secondary Forests of Northeast China Using Gaofen-7 Stereo Satellite Data by Caixia Liu, Huabing Huang, Zhiyu Zhang, Wenyi Fan, Di Wu

    Published 2024-12-01
    “…It is equipped with a laser altimeter system and a dual-line array stereoscopic mapping camera, which enables it to synchronously generate full-waveform LiDAR data and stereoscopic images. The bulk of existing research has examined how accurate GF-7 is for topographic measurements of bare land or canopy height. …”
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  9. 309

    Gravitational odd-parity perturbation of a Horndeski hairy black hole: quasinormal mode and parameter constraint by Zhen-Hao Yang, Yun-He Lei, Xiao-Mei Kuang, Bin Wang

    Published 2025-01-01
    “…Abstract During the binary black hole coalescence, gravitational waves emitted at the ringdown stage can be well described by black hole perturbation theory, where the quasinormal modes (QNMs) become the important ingredient in modeling the pattern waveform. In general relativity (GR), the QNMs can be obtained from solving the Regge–Wheeler (RW) equation of a non-rotating black hole. …”
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  10. 310

    Digital Current Measurement Element for Operation During Current Transformer Severe Saturation by Yu. V. Rumiantsev, F. A. Romaniuk, V. Yu. Rumiantsev, I. V. Novash

    Published 2018-12-01
    “…The functional testing of the proposed digital current measurement element model was carried out using the signal, that was similar in form to the waveform of the secondary current of the severe saturated CT. …”
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  11. 311

    Association of arterial stiffness and eye disease: a systematic review and meta-analysis by Robert Scragg, Angela L Beros, John D Sluyter

    Published 2025-01-01
    “…Cohort studies were included if they estimated arterial stiffness using any measures based on the arterial waveform, with cross-sectional and case-control studies limited to measures of pulse wave velocity. …”
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  12. 312

    Constant Strain Rate Uniaxial Compression of Green Sandstone during SHPB Tests Driven by Pendulum Hammer by S. H. Li, W. C. Zhu, L. L. Niu, F. Dai

    Published 2017-01-01
    “…To find the proper special shape striker, a striker with a cambered surface was introduced and eight geometrically different hammers were designed to analyze the effect of hammer geometry on the waveform of excited incident stress waves. Based on experiments and simulations, parameter effects, including the cambered hammer curvature radius and hammer diameter, length, and impact velocity, on the incident wave shape were examined. …”
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  13. 313

    An improved SPWM control approach with aid of ant lion optimization for minimizing the THD in multilevel inverters by Alaa M. Abdel-hamed, Abdelrahman M. Nasser, Hamdy Shatla, Amr Refky

    Published 2025-01-01
    “…The quality of the resulting waveform was enhanced, and both filter size and cost were significantly reduced. …”
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  14. 314

    Optimizing Invasive ECT Sensor Dimensions for Conducting Pipe: A Simulation Study by Ain Eazriena Che Man, Yasmin Abdul Wahab, Nurhafizah Abu Talip Yusof, Suzanna Ridzuan Aw, Mohd Mawardi Saari, Ruzairi Abdul Rahim, Sia Yee Yu

    Published 2025-01-01
    “…Various sensor dimensions are tested in a 150 mm length steel pipe, with a sinusoidal waveform source of 25 Vpp and a frequency of 400 kHz applied to the model in both homogeneous and non-homogeneous dielectric media conditions. …”
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  15. 315

    5-point airway (5-AIR) ultrasound protocol for confirmation of endotracheal intubation and position in paediatric patients undergoing surgery: A prospective observational study by Adhiraj Baruah, Zainab Ahmad, Vaishali Waindeskar, Shikha Jain, Roshan Chanchlani, Pranita Mandal, Amit Agarwal, Shristi Agarwal

    Published 2024-12-01
    “…Background and Aims: We devised and compared the accuracy and time required for a 5-point airway (5-AIR) ultrasound (USG) protocol for confirming endotracheal intubation (ETI) and endotracheal tube (ETT) positioning (ETP) with the current reference standard of quantitative waveform capnography (QWC) and auscultation. Methods: In this prospective observational study, 75 American Society of Anesthesiologists physical status I or II children between 2 and 12 years undergoing elective surgery were recruited. …”
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  16. 316

    Study on the Key Technology of Controlling the Instability of Deep High-Stress Coal and Rock Mass and Relieving the Danger by Zhijing Zhang, Jianghong Zuo, Dongji Lei

    Published 2021-01-01
    “…The analysis shows that, before hydraulic caverning, the waveform of coal and rock fracture signal has a short duration, large amplitude, and obvious signal mutation, and the dominant frequency of the signal is about 250 Hz, with large total energy. …”
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    Article
  17. 317

    Influence of the Transducer-Mounting Method on the Radiation Performance of Acoustic Sources Used in Monopole Acoustic Logging While Drilling by Jiale Wang, Xiaohua Che, Wenxiao Qiao, Shengyue Tao, Qiqi Zhao

    Published 2025-01-01
    “…Subsequently, the acoustic pressure waveform radiated by the source driven by a half-sine excitation voltage signal was calculated using the complex transmitting voltage response. …”
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  18. 318

    Ultraviolet spectral broadening by stimulated rotational Raman scattering on nitrogen pumped with signal laser injection by Xiangbing Wang, Xiangxu Chai, Ping Li, Bo Zhang, Qihua Zhu, Xiaocheng Tian, Ju Wang, Zhaoyu Zong, Song Zhou, Ke Yao, Sen Li, Junpu Zhao, Zhitao Peng

    Published 2025-01-01
    “…Through stimulated rotational Raman scattering (SRRS) with signal laser injection, we achieve effective spectral broadening in short-range propagation, with good retention of the original near-field distribution and time waveform. Theoretical calculations show that 2% bandwidth spectral broadening can be achieved by injecting 20 kW/cm2 signal light at 2.2 GW/cm2 flux of the pump laser. …”
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    Article
  19. 319

    Solar Tide‐like Signatures in the Ionospheric Total Electron Content During the 2018 Sudden Stratospheric Warming Event by Han Ma, Maosheng He, Libo Liu, Wenbo Li, Yuyan Yang, Ruilong Zhang, Yiding Chen, Huijun Le, Hui Zhang, Guozhu Li

    Published 2022-09-01
    “…In addition, we suggest that besides the direct or indirect effects from the interactions of various waves in the lower atmosphere, the non‐sinusoidal waveform of the ionospheric diurnal variation may also contribute to solar harmonic signatures in the ionosphere.…”
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  20. 320

    Mechanical Properties of Bump-Prone Coal with Different Porosities and Its Acoustic Emission-Charge Induction Characteristics under Uniaxial Compression by Xin Ding, Xiaochun Xiao, Xiangfeng Lv, Di Wu, Jun Xu

    Published 2019-01-01
    “…The frequency of AE waveform is dominated in three bands (1∼50 kHz, 100∼150 kHz, and 175∼200 kHz) and that of charge induction had one frequency band 1∼100 Hz, and the amplitudes of time domain and main frequency components increased with stress improved. …”
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    Article