Results 31 to 40 of about 1,712,958 (251)
An isogeometric analysis approach to gradient‐dependent plasticity [PDF]
International Journal for Numerical Methods in Engineering, 2017 SummaryGradient‐dependent plasticity can be used to achieve mesh‐objective results upon loss of well‐posedness of the initial/boundary value problem because of the introduction of strain softening, non‐associated flow, and geometric nonlinearity.
Kolo, I., de Borst, R.
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Natural-gradient learning for spiking neurons [PDF]
, 2022 In many normative theories of synaptic plasticity, weight updates implicitly depend on the chosen parametrization of the weights. This problem relates, for example, to neuronal morphology: synapses which are functionally equivalent in terms of their ...
Elena Kreutzer +5 more
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State-Dependent Exploration for Policy Gradient Methods [PDF]
, 2008 Policy Gradient methods are model-free reinforcement learning algorithms which in recent years have been successfully applied to many real-world problems. Typically, Likelihood Ratio (LR) methods are used to estimate the gradient, but they suffer from high variance due to random exploration at every time step of each training episode.
Thomas Rückstieß +2 more
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The temperature dependence of gradient system response characteristics [PDF]
Magnetic Resonance in Medicine, 2019 PurposeThe gradient system transfer function (GSTF) characterizes the frequency transfer behavior of a dynamic gradient system and can be used to correct non‐Cartesian k‐space trajectories. This study analyzes the impact of the gradient coil temperature of a 3T scanner on the GSTF.MethodsGSTF self‐ and B0‐cross‐terms were acquired for a 3T Siemens ...
Manuel Stich +7 more
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The effects of convolution and gradient dependence on a parametric Dirichlet problem [PDF]
, 2020 Our objective is to study a new type of Dirichlet boundary value problem consisting of a system of equations with parameters, where the reaction terms depend on both the solution and its gradient (i.e., they are convection terms) and incorporate the ...
Motreanu, Dumitru. +3 more
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Advances in Materials Science and Engineering, 2022 Gravity is the primary load source in geotechnical engineering, and its effect becomes extremely important in these cases such as lunar research station construction and in situ resource utilization. However, at the current stage, the study on the effect
Ruilin Li +4 more
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MathematicsIn this note we provide an overview of some existence (with sign information) and regularity results for differential equations, in which the method of sub and supersolutions plays an important role.
Giuseppina Barletta
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THE ABUNDANCE OF HELIUM AND STELLAR PULSATION
Odessa Astronomical Publications, 2017 Radial gradient of relative amplitude of the light variation FV for galactic classical Cepheids is found. The gradient has different signs for two cases: P > 8d and P < 8d. For P > 8d the gradient is negative.
V. V. Kovtyukh
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NeuroImage, 2023 Measuring the time/frequency dependence of diffusion MRI is a promising approach to distinguish between the effects of different tissue microenvironments, such as membrane restriction, tissue heterogeneity, and compartmental water exchange. In this study,
Erpeng Dai +7 more
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On the gradient-dependent theory of plasticity and shear banding
Acta Mechanica, 1992 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zbib, H. M., Ayfantis, Ilias
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