Results 21 to 30 of about 1,353,376 (300)
Earth and Planetary Physics, 2021 The nearly analytic discrete (NAD) method is a kind of finite difference method with advantages of high accuracy and stability. Previous studies have investigated the NAD method for simulating wave propagation in the time-domain.
DeYao Zhang +5 more
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ENTROPY OF FREQUENCY DOMAIN OF HEART RATE VARIABILITY
Journal of V. N. Karazin Kharkiv National University: Series Medicine, 2022 Introduction. The heart rate variability (HRV) is based on measuring (time) intervals between R-peaks (of RR-intervals) of an electrocardiogram (ECG) and plotting a rhythmogram on their basis with its subsequent analysis by various mathematical methods ...
Oleksandr Martynenko +3 more
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Numerical Study of the Influence of Fishnet Mesh Size on a Floating Platform
Journal of Marine Science and Engineering, 2020 This study aims to investigate the influence of fishnet mesh size on a floating platform. A self-developed, time-domain numerical model was used for the evaluation.
Hung-Jie Tang +2 more
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Frequency-Domain Streak Camera And Tomography For Ultrafast Imaging Of Evolving And Channeled Plasma Accelerator Structures [PDF]
, 2010 We demonstrate a prototype Frequency Domain Streak Camera (FDSC) that can capture the picosecond time evolution of the plasma accelerator structure in a single shot. In our prototype Frequency-Domain Streak Camera, a probe pulse propagates obliquely to a
Dong, P. +5 more
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Two-dimensional fast imaging of airborne EM data based on U-net
Frontiers in Earth Science, 2023 As an efficient geophysical exploration tool, the airborne electromagnetic (AEM) method has been widely used in mineral exploration, geological mapping, environmental and engineering investigation, etc.
Qiang Liu +6 more
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Harmonics Signal Feature Extraction Techniques: A Review
Mathematics, 2023 Harmonic estimation is essential for mitigating or suppressing harmonic distortions in power systems. The most important idea is that spectrum analysis, waveform estimation, harmonic source classification, source location, the determination of harmonic ...
Minh Ly Duc, Petr Bilik, Radek Martinek
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Frequency-domain waveform approximants capturing Doppler shifts [PDF]
, 2018 Gravitational wave astrophysics has only just begun, and as current detectors are upgraded and new detectors are built, many new, albeit faint, features in the signals will become accessible.
Chamberlain, Katie +3 more
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Multi-Distance Frequency-Domain Optical Measurements of Coherent Cerebral Hemodynamics
Photonics, 2019 We report non-invasive, bilateral optical measurements on the forehead of five healthy human subjects, of 0.1 Hz oscillatory hemodynamics elicited either by cyclic inflation of pneumatic thigh cuffs, or by paced breathing. Optical intensity and the phase
Giles Blaney +4 more
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Cointegration in frequency domain [PDF]
Journal of Time Series Analysis, 2002 Existence of a cointegration relationship between two time series in the time domain imposes restrictions on the series zero‐frequency behaviour in terms of their squared coherence, phase and gain, in the frequency domain. I derive these restrictions by studying cross‐spectral properties of a cointegrated bivariate system.
openaire +8 more sources
Data Detection and Code Channel Allocation for Frequency-Domain Spread ACO-OFDM Systems Over Indoor Diffuse Wireless Channels [PDF]
, 2014 Future optical wireless communication systems promise to provide high-speed data transmission in indoor diffuse environments. This paper considers frequency-domain spread asymmetrically clipped optical orthogonal frequency-division multiplexing (ACOOFDM)
Chen, Ming +4 more
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