Results 61 to 70 of about 17,604 (190)

Interplay Between Hierarchy and Centrality in Complex Networks

open access: yesIEEE Access, 2020
Hierarchy and centrality are two popular notions used to characterize the importance of entities in complex systems. Indeed, many complex systems exhibit a natural hierarchical structure, and centrality is a fundamental characteristic allowing to ...
Stephany Rajeh   +3 more
doaj   +1 more source

Finite Resolution Dynamics

open access: yes, 2010
We develop a new mathematical model for describing a dynamical system at limited resolution (or finite scale), and we give precise meaning to the notion of a dynamical system having some property at all resolutions coarser than a given number.
Luzzatto, Stefano, Pilarczyk, Pawel
core   +1 more source

ANDERSON TRANSITIONS: CRITICALITY, SYMMETRIES AND TOPOLOGIES [PDF]

open access: yesInternational Journal of Modern Physics B, 2010
The physics of Anderson transitions between localized and metallic phases in disordered systems is reviewed. We focus on the character of criticality as well as on underlying symmetries and topologies that are crucial for understanding phase diagrams and the critical behavior.
Mirlin, A. D.   +3 more
openaire   +3 more sources

On computing local monodromy and the numerical local irreducible decomposition

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract Similarly to the global case, the local structure of a holomorphic subvariety at a given point is described by its local irreducible decomposition. Geometrically, the key requirement for obtaining a local irreducible decomposition is to compute the local monodromy action of a generic linear projection at the given point, which is always well ...
Parker B. Edwards   +1 more
wiley   +1 more source

Topological state transitions in electromagnetic topological defects

open access: yes, 2023
Abstract The recent emergence of electromagnetic topological defects has attracted wide interest in fields from topological photonics to deep-subwavelength light-mater interactions. Previously, much of the research has focused on constructing specific topological defects but the fundamental theory describing the physical mechanisms underlying ...
Peng Shi   +3 more
openaire   +3 more sources

Geometric Assortative Growth Model for Small-World Networks

open access: yesThe Scientific World Journal, 2014
It has been shown that both humanly constructed and natural networks are often characterized by small-world phenomenon and assortative mixing. In this paper, we propose a geometrically growing model for small-world networks.
Yilun Shang
doaj   +1 more source

Fast and Slow Signal Propagation in Abiotic Polypeptide Assemblies

open access: yesChemBioChem, Volume 27, Issue 6, 27 March 2026.
Proteinoid microspheres formed by thermal polymerization of amino acids exhibit spontaneous electrical potential fluctuations without genetic material, membranes, or ion channels. Multi‐electrode recordings and electron microscopy reveal composition‐dependent voltage oscillations, long‐term drifts, and correlated signals across electrodes.
Panagiotis Mougkogiannis   +1 more
wiley   +1 more source

Aberrant Brain Network Integration and Segregation in Diabetic Peripheral Neuropathy Revealed by Structural Connectomics

open access: yesFrontiers in Neuroscience, 2020
Diabetic peripheral neuropathy (DPN) is one of the most common forms of peripheral neuropathy, and its incidence has been increasing. Mounting evidence has shown that patients with DPN have been associated with widespread alterations in the structure ...
Fangxue Yang   +11 more
doaj   +1 more source

Reorganization of the Brain Structural Covariance Network in Ischemic Moyamoya Disease Revealed by Graph Theoretical Analysis

open access: yesFrontiers in Aging Neuroscience, 2022
ObjectiveIschemic moyamoya (MMD) disease could alter the cerebral structure, but little is known about the topological organization of the structural covariance network (SCN).
Peijing Wang   +27 more
doaj   +1 more source

D-brane topology changing transitions [PDF]

open access: yesNuclear Physics B, 1998
16 pages, 3 figures ...
openaire   +3 more sources

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