Results 21 to 30 of about 48,390 (294)

Accidental Degeneracy of an Elliptic Differential Operator: A Clarification in Terms of Ladder Operators

open access: yesMathematics, 2021
We consider the linear, second-order elliptic, Schrödinger-type differential operator L:=−12∇2+r22. Because of its rotational invariance, that is it does not change under SO(3) transformations, the eigenvalue problem −12∇2+r22f(x,y,z)=λf(x,y,z) can be ...
Roberto De Marchis   +2 more
doaj   +1 more source

Another Case of Degenerated Discrete Chenciner Dynamic System and Economics

open access: yesMathematics, 2022
The non-degenerate Chenciner bifurcation of a discrete dynamical system is studied using a transformation of parameters which must be regular at the origin of the parameters (the condition CH.1 of the well-known treatise of Kuznetsov).
Sorin Lugojan   +2 more
doaj   +1 more source

DEGENERACY [PDF]

open access: yesThe Journal of Nervous and Mental Disease, 1907
n ...
Smith, P. C., Atwood, C. E.
openaire   +2 more sources

Variation, mosaicism and degeneracy in the hominin foot

open access: yesEvolutionary Human Sciences, 2022
The fossil record is scarce and incomplete by nature. Animals and ecological processes devour soft tissue and important bony details over time and, when the dust settles, we are faced with a patchy record full of variation.
J. McClymont, K. Davids, R.H. Crompton
doaj   +1 more source

Tracking by Risky Particle Filtering over Sensor Networks

open access: yesSensors, 2020
The system of wireless sensor networks is high of interest due to a large number of demanded applications, such as the Internet of Things (IoT). The positioning of targets is one of crucial problems in wireless sensor networks.
Jaechan Lim, Hyung-Min Park
doaj   +1 more source

Thermal acclimation and habitat-dependent differences in temperature robustness of a crustacean motor circuit

open access: yesFrontiers in Cellular Neuroscience, 2023
IntroductionAt the cellular level, acute temperature changes alter ionic conductances, ion channel kinetics, and the activity of entire neuronal circuits. This can result in severe consequences for neural function, animal behavior and survival.
Wolfgang Stein   +9 more
doaj   +1 more source

Generalized Hypergraph Coloring

open access: yesDiscussiones Mathematicae Graph Theory, 2021
A smooth hypergraph property 𝒫 is a class of hypergraphs that is hereditary and non-trivial, i.e., closed under induced subhypergraphs and it contains a non-empty hypergraph but not all hypergraphs.
Schweser Thomas
doaj   +1 more source

VARIABILITY OF NEURONAL RESPONSES: TYPES AND FUNCTIONAL SIGNIFICANCE IN NEUROPLASTICITY AND NEURAL DARWINISM

open access: yesFrontiers in Human Neuroscience, 2016
In many cases, neural signals detected under the same external experimental conditions significantly change from trial to trial. The variability phenomenon, which complicates extraction of reproducible results and is ignored in many studies by averaging,
Alexander Chervyakov   +2 more
doaj   +1 more source

Three Merry Roads to T-Violation [PDF]

open access: yes, 2013
This paper is a tour of how the laws of nature can distinguish between the past and the future, or be T-violating. I argue that, in terms of the basic argumentative structure, there are basically just three approaches currently being explored.
Roberts, Bryan W., Bryan W. Roberts
core   +1 more source

DEGENERACY [PDF]

open access: yesAmerican Journal of Psychiatry, 1900
n ...
openaire   +2 more sources

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