Results 41 to 50 of about 1,849,278 (326)

Meta-SpikePropamine: learning to learn with synaptic plasticity in spiking neural networks

open access: yesFrontiers in Neuroscience, 2023
We propose that in order to harness our understanding of neuroscience toward machine learning, we must first have powerful tools for training brain-like models of learning.
Samuel Schmidgall   +2 more
doaj   +1 more source

Size effects and idealized dislocation microstructure at small scales: predictions of a phenomenological model of Mesoscopic Field Dislocation Mechanics: Part I

open access: yes, 2005
A Phenomenological Mesoscopic Field Dislocation Mechanics (PMFDM) model is developed, extending continuum plasticity theory for studying initial-boundary value problems of small-scale plasticity.
Acharya, Amit, Roy, Anish
core   +1 more source

A porous crystal plasticity constitutive model for ductile deformation and failure in porous single crystals [PDF]

open access: yes, 2018
The author thankfully acknowledges the financial support of EPSRC funding (EP/ L021714/1).Peer ...
Siddiq, Amir
core   +1 more source

Ductilizing Al-Mn strips via gradient texture

open access: yesMaterials Research Letters, 2023
Improved strength-ductility synergy is not uncommon among metallic materials with gradient structures of grains and twins. In this work, we report that the texture gradient innately created in Al-Mn strips by twin-roll casting is also capable of ...
Jie Kuang   +7 more
doaj   +1 more source

Isotropic strain gradient plasticity model based on self-energies of dislocations and the Taylor model for plastic dissipation

open access: yesInternational journal of plasticity, 2019
A dislocation mechanics based isotropic strain gradient plasticity model is developed. The model is derived from self-energies of dislocations and the Taylor model for plastic dissipation.
P. Gudmundson, C. Dahlberg
semanticscholar   +1 more source

Strain-Gradient Plasticity as the Γ-Limit of a Nonlinear Dislocation Energy with Mixed Growth [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2018
In this paper, we derive by means of $\Gamma$-convergence a macroscopic strain-gradient plasticity theory from a semidiscrete model for edge dislocations in an infinite cylindrical crystal.
Janusz Ginster
semanticscholar   +1 more source

Phenotypic plasticity of European larch radial growth and wood density along a‐1,000 m elevational gradient

open access: yesPlant-Environment Interactions, 2021
Why this research Matters Phenotypic plasticity is a key mechanism for sedentary long‐living species to adjust to changing environment. Here, we use mature Larix decidua tree‐ring variables collected along an elevational transect in the French Alps to ...
Margarita Escobar‐Sandoval   +4 more
doaj   +1 more source

The Determination of Employee Representatives [PDF]

open access: yes, 1938
Plant species differ in their ability to transform available resources to biomass and to respond in a plastic way to environmental circumstances; we hypothesized that such differences among four weed taxa of Papaver would explain differences in their ...
Karlsson, Jan   +3 more
core   +2 more sources

Interfaces within strain gradient plasticity: Theory and experiments [PDF]

open access: yesActa Materialia, 2006
In this paper, it is shown'that the occurrence of dislocation pileups across grain boundaries, as well as subsequent emission to the adjacent grains, is captured theoretically by gradient plasticity and confirmed experimentally by nanoindentation. From a theoretical point of view, this is accomplished (within a deformation theory framework applicable ...
Aifantis, K.E.   +3 more
openaire   +1 more source

Gradient plasticity used for modeling extrinsic and intrinsic size effects in the torsion of Au microwires

open access: yesJournal of the Mechanical Behavior of Materials, 2016
The gradient plasticity theory proposed by Aifantis and coworkers has been successfully used to model size effect phenomena at the microscale and nanoscale, by introducing into the formulation an internal length scale associated with the phenomenological
Wei Xiaokun   +3 more
doaj   +1 more source

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