Results 1 to 10 of about 6,952,969 (304)

Neuromodulated Spike-Timing-Dependent Plasticity and Theory of Three-Factor Learning Rules

open access: yesFrontiers in Neural Circuits, 2016
Classical Hebbian learning puts the emphasis on joint pre- and postsynaptic activity, but neglects the potential role of neuromodulators. Since neuromodulators convey information about novelty or reward, the influence of neuromodulatorson synaptic ...
Wulfram eGerstner, Nicolas eFremaux
doaj   +2 more sources

Mechanism-based strain gradient plasticity? I. Theory

open access: yesJournal of the Mechanics and Physics of Solids, 1999
A mechanism-based theory of strain gradient plasticity (MSG) is proposed based on a multiscale framework linking the microscale notion of statistically stored and geometrically necessary dislocations to the mesoscale notion of plastic strain and strain ...
Huajian Gao, W D Nix, J W Hutchinson
exaly   +2 more sources

How three different theories of depression converge at inflammation [PDF]

open access: yesDiscover Mental Health
Three main theories of depression have been developed: the monoamine, plasticity and inflammation theories. While each theory has been bolstered by decades of excellent scientific evidence, individually each idea falls short for developing universally ...
B. Baumberger, L. Batey, P. Hashemi
doaj   +2 more sources

Cajal, the neuronal theory and the idea of brain plasticity

open access: yesFrontiers in Neuroanatomy
This paper reviews the importance of Cajal’s neuronal theory (the Neuron Doctrine) and the origin and importance of the idea of brain plasticity that emerges from this theory.
Jairo A. Rozo   +3 more
doaj   +3 more sources

Influence of Shot Peening on 70/30 Brass Residual Stresses Using Plasticity Theory [PDF]

open access: yesEngineering and Technology Journal, 2009
Residual stresses play an important role in the behavior of structuressubjected to static and dynamic loads. The main aim of this study is to estimate experimentally the residual stresses in 70/30 brass material tested in bending and torsion using the ...
Hussain J. M. Alalkawi   +2 more
doaj   +1 more source

Damage and plasticity evolution of reinforced concrete beams using laminated Euler-Bernoulli finite elements

open access: yesRevista IBRACON de Estruturas e Materiais, 2023
: This paper analyses the behaviour of reinforced concrete beams subjected to progressive loads. Although this topic is addressed in recent works through tri-dimensional finite elements, the present study adopts a simpler alternative, using Euler ...
Ana Paula Imai   +2 more
doaj   +1 more source

Testing for Phenotypic Plasticity

open access: yesPhilosophy, Theory, and Practice in Biology, 2021
Phenotypic plasticity, or an organism’s capacity to change its phenotype in response to environmental variation, is a pervasive—perhaps even ubiquitous—feature of the biological world.
Aja Watkins
doaj   +1 more source

Axisymmetric Stress Field Near a Circular Cut in a Solid with Stress State Dependent Plastic Properties [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2019
The paper analyzes the properties of the constitutive relations of the theory of plasticity for a continuum, which plastic properties depend on the type of stress state.
Evgenii Viktorovich Lomakin
doaj   +1 more source

Mode I crack tip fields: Strain gradient plasticity theory versus J2 flow theory [PDF]

open access: yesEuropean Journal of Mechanics. A, Solids, 2019
The mode I crack tip asymptotic response of a solid characterised by strain gradient plasticity is investigated. It is found that elastic strains dominate plastic strains near the crack tip, and thus the Cauchy stress and the strain state are given ...
E. Martínez-Pañeda, N. Fleck
semanticscholar   +1 more source

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