Results 51 to 60 of about 54,906 (291)

A short proof of Brooks’ Theorem for vertex arboricity

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
The vertex-arboricity of a graph is the minimum number of subsets that the vertices of can be partitioned so that the subgraph induced by each set of vertices is a forest. Kronk and Mitchem proved a generalization of Brooks’ Theorem for vertex arboricity,
Allan Bickle
doaj   +1 more source

Degeneracy and stability in neural circuits of dopamine and serotonin neuromodulators: A theoretical consideration

open access: yesFrontiers in Computational Neuroscience, 2023
Degenerate neural circuits perform the same function despite being structurally different. However, it is unclear whether neural circuits with interacting neuromodulator sources can themselves degenerate while maintaining the same neuromodulatory ...
Chandan K. Behera   +5 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Kramers degeneracy without eigenvectors

open access: yes, 2012
Wigner gave a well-known proof of Kramers degeneracy for time reversal invariant systems containing an odd number of half-integer spin particles. But Wigner's proof relies on the assumption that the Hamiltonian has an eigenvector, and thus does not apply
Roberts, Bryan W.
core   +1 more source

Degeneracy and Complexity in Neuro-Behavioral Correlates of Team Coordination

open access: yesFrontiers in Human Neuroscience, 2020
Team coordination—members of a group acting together rather than performing specific actions individually—is essential for success in many real-world tasks such as military missions, sports, workplace, or school interactions.
Silke Dodel   +3 more
doaj   +1 more source

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

open access: yesMolecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park   +6 more
wiley   +1 more source

Degeneracy degrees of constraint collections

open access: yes, 2003
This paper presents an unifying approach to the theory of degeneracy of basic feasible solutions, vertices, faces, and all subsets of polyhedra. It is a generalization of the usual concept of degeneracy defined for basic feasible solutions of an LP ...
Tijssen, G.A., Sierksma, G.
core   +1 more source

Reaction diffusion equations with boundary degeneracy

open access: yesElectronic Journal of Differential Equations, 2016
In this article, we consider the reaction diffusion equation $$ \frac{\partial u}{\partial t} = \Delta A(u),\quad (x,t)\in \Omega \times (0,T), $$ with the homogeneous boundary condition.
Huashui Zhan
doaj  

“Nature Made Us This Way…”: Crime without Punishment? (Fyodor Dostoevsky and Ivan Bunin). Article 2: “Are There Such Signs at Birth?” [PDF]

open access: yesДостоевский и мировая культура: Филологический журнал
The article examines the thesis of marginal anthropology as represented by Fyodor Dostoevsky in the novel Crime and Punishment and creatively reinterpreted by Ivan Bunin in the short story “Loopy Ears,” under the influence of the achievements of the ...
Gennady Yu. Karpenko
doaj   +1 more source

On Breaking Cosmic Degeneracy [PDF]

open access: yesThe Astrophysical Journal, 1998
It has been argued that the power spectrum of the anisotropies in the Cosmic Microwave Background (CMB) may be effectively degenerate, namely that the observable spectrum does not determine a unique set of cosmological parameters. We describe the physical origin of this degeneracy and show that at small angular scales it is broken by gravitational ...
Benton Metcalf R., Silk J.
openaire   +2 more sources

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