Results 11 to 20 of about 10,111,763 (293)
A continuous/discontinuous Galerkin formulation for a strain gradient-dependent damage model: 2D results [PDF]
, 2011 The numerical solution of strain gradient-dependent continuum problems has been hindered by continuity demands on the basis functions. The presence of terms in constitutive models which involve gradients of the strain eld means that the $C^0$ continuity
G. N. Wells +2 more
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Calculus on MDPs: Potential Shaping as a Gradient
CoRR, 2022 In reinforcement learning, different reward functions can be equivalent in terms of the optimal policies they induce. A particularly well-known and important example is potential shaping, a class of functions that can be added to any reward function without changing the optimal policy set under arbitrary transition dynamics.
Erik Jenner, Herke van Hoof, Adam Gleave
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Environmental Research Letters, 2022 The El Niño-Southern Oscillation (ENSO) modifies precipitation patterns across the planet. Charge separation in disturbed weather and thunderstorms drives the global atmospheric electric circuit (GEC), hence ENSO-induced precipitation changes are ...
R Giles Harrison +3 more
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Water Potential Gradients in Field Tobacco [PDF]
Plant Physiology, 1970 A pressure chamber was used to establish the vertical gradients of leaf water potential (Psi(Leaf)) and stem water potential (Psi(Stem)) in field-grown tobacco (Nicotiana tabacum L. var. Havanna seed 211) at three different times of day. Leaves enclosed in polyethylene bags and aluminum foil the previous afternoon and left to equilibrate overnight were
J E, Begg, N C, Turner
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Study on potential gradient in Ti anodization
Electrochemistry Communications, 2023 Porous oxides or nanotubes are obtained through the anodization of valve metal. However, the mechanism of nanotube growth remains unclear. Traditional field-assisted dissolution (FAD) theory has many limitations, such as its inability to explain the ...
Longfei Jiang +5 more
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Bio-potential amplifier for potential gradient measurements [PDF]
Journal of Physics: Conference Series, 2007 This work proposes a bio-potential amplifier suitable for measurements from an electric potential gradient sensor, in electro-encephalography (EEG). The sensor is an array made by three electrodes placed on the vertices of an equilateral triangle of reduced size.
Andrea N Bermúdez +2 more
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Evaluation Model for the Scope of DC Interference Generated by Stray Currents in Light Rail Systems
Energies, 2019 Electrochemical corrosion caused by stray currents reduces the lifespan of buried gas pipelines and the safety of light rail systems. Determining the scope of stray current corrosion will help prevent the corrosion of existing buried pipelines and ...
Chengtao Wang +4 more
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The dynamics of the gradient of potential vorticity [PDF]
Journal of Physics A: Mathematical and Theoretical, 2010 The transport of the potential vorticity gradient $\bnabla{q}$ along surfaces of constant temperature $θ$ is investigated for the stratified Euler, Navier-Stokes and hydrostatic primitive equations of the oceans and atmosphere using the divergenceless flux vector $\bdB = \bnabla Q(q)\times\bnablaθ$, for any smooth function $Q(q)$.
Gibbon, J. D., Holm, D. D.
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Meikuang Anquan, 2020 In this paper, the electrochemical modification of lean coal samples with potential gradients of 1 V/cm, 2 V/cm and 4 V/cm, gas adsorption desorption test of coal samples before and after modification, and the change of pore structure and surface group ...
ZHANG Xiaoyu, KANG Tianhe, ZHANG Runxu, ZHANG Bin, KANG Guanxian, ZHANG Liankun
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The 2020 Patagonian solar eclipse from the point of view of the atmospheric electric field
Papers in Physics, 2022 In this study, the response of atmospheric electrical and meteorological variables at three different sites of Argentina are studied during the total solar eclipse of December 14, 2020: Valcheta (100% darkening), Buenos Aires (73%) and El Leoncito (71%).
Yasmin R. Velazquez +7 more
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