Results 11 to 20 of about 2,423,805 (191)
Journal of Magnetic Resonance Imaging, 2023 Diffusion imaging holds great potential for the non‐invasive assessment of the glymphatic system in humans. One technique, diffusion tensor imaging along the perivascular space (DTI‐ALPS), has introduced the ALPS‐index, a novel metric for evaluating ...
Adam M. Wright +3 more
semanticscholar +1 more source
Space Weather, 2023 Waves which couple to energetic electrons are particularly important in space weather, as they drive rapid changes in the topology and intensity of Earth's outer radiation belt during geomagnetic storms. This includes Ultra Low Frequency (ULF) waves that
Kyle R. Murphy +16 more
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Frontiers in Astronomy and Space Sciences, 2023 In the first part of this work, we highlighted a drift-diffusion equation capable of resolving the magnetic local time dimension when describing the effects of trapped particle transport on radiation belt intensity.
Solène Lejosne +2 more
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A Comparison of Radial Diffusion Coefficients in 1‐D and 3‐D Long‐Term Radiation Belt Simulations
Journal of Geophysical Research: Space Physics, 2020 Radial diffusion is one of the dominant physical mechanisms driving acceleration and loss of radiation belt electrons. A number of parameterizations for radial diffusion coefficients have been developed, each differing in the data set used.
A. Drozdov +4 more
semanticscholar +1 more source
Experiment and radial multi-scale dynamic apparent diffusion model of gas in cylindrical coal core
Meikuang Anquan, 2022 In order to improve the accuracy of measuring gas content in long borehole, experiments of gas desorption flow in radial direction of ?准50 mm × 100 mm cylindrical coal and 1-3 mm granular coal were carried out.
LI Zhiqiang +4 more
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Accounting for Variability in ULF Wave Radial Diffusion Models
Journal of Geophysical Research: Space Physics, 2020 Many modern outer radiation belt models simulate the long‐time behavior of high‐energy electrons by solving a three‐dimensional Fokker‐Planck equation for the drift‐ and bounce‐averaged electron phase space density that includes radial, pitch‐angle, and ...
R. Thompson, C. E. Watt, Paul Williams
semanticscholar +1 more source
The EMERALD Model for the Estimation of the Radial Diffusion Coefficients in the Outer Belt
Space Weather, 2023 Radial diffusion is one of the dominant physical mechanisms driving acceleration and loss of electrons in the outer radiation belt. Therefore, the accurate estimation of radial diffusion coefficients (DLL) is crucial for detailed radiation belt modeling.
S. Aminalragia‐Giamini +8 more
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Estimating Inner Magnetospheric Radial Diffusion Using a Hybrid-Vlasov Simulation
Frontiers in Astronomy and Space Sciences, 2022 Radial diffusion coefficients quantify non-adiabatic transport of energetic particles by electromagnetic field fluctuations in planetary radiation belts.
H. George +22 more
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Frontiers in Physics, 2022 In this work, a CMFS method based on the analogy equation method, the radial basis function and the method of fundamental solutions for linear and nonlinear convection-diffusion equations in anisotropic materials is presented.
L Zhang +8 more
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3DShape2VecSet: A 3D Shape Representation for Neural Fields and Generative Diffusion Models [PDF]
ACM Transactions on Graphics, 2023 We introduce 3DShape2VecSet, a novel shape representation for neural fields designed for generative diffusion models. Our shape representation can encode 3D shapes given as surface models or point clouds, and represents them as neural fields. The concept
Biao Zhang +3 more
semanticscholar +1 more source