Results 31 to 40 of about 1,798 (292)

The Radon transform on the Heisenberg group and the transversal Radon transform

open access: yesJournal of Functional Analysis, 2012
The notion of the Radon transform on the Heisenberg group was introduced by R. Strichartz and inspired by D. Geller and E.M. Stein's related work. The more general transversal Radon transform integrates functions on the m-dimensional real Euclidean space over hyperplanes meeting the last coordinate axis.
openaire   +3 more sources

Gegenbauer Transforms via the Radon Transform [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 1979
Use is made of the Radon transform on even dimensional spaces and Gegenbauer functions of the second kind to obtain a general Gegenbauer transform pair. In the two-dimensional limit the pair reduces to a Chebyshev transform pair.
openaire   +2 more sources

Injectivity of Rotation invariant windowed Radon transforms. [PDF]

open access: yes, 2005
International audienceWe consider rotation invariant windowed Radon transforms that integrate a function over hyperplanes by using a radial weight (called window). T.
Hermine Biermé, Biermé, Hermine
core   +1 more source

Identities among Euclidean Sonar and Radon transforms

open access: yes, 2009
We establish new relations which connect Euclidean Sonar transforms (integrals taken over spheres with centers in a hyperplane) with classical Radon transforms.
Feldman, David, Beltukov, Aleksei
core   +1 more source

Identifying rotational radon transforms [PDF]

open access: yesPeriodica Mathematica Hungarica, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Long-time coherent integration for high dynamic DSSS signal

open access: yesThe Journal of Engineering, 2019
A novel coherent integration method for high dynamics direct sequences spread spectrum (DSSS) signal is presented. The presented method is based on adjacent cross-correlation function (ACCF) and Lv's distribution (LVD). ACCF is firstly used to compensate
Fengyu Wang   +4 more
doaj   +1 more source

Radon transforms and packings

open access: yesDiscrete Applied Mathematics, 2001
The author studies properties of group codes, namely generalized weights and spectra of linear block codes over a finite field and their analogues for lattice sphere packings in Euclidean space. He obtains new results about linear codes, and generalizations of Siegel mean value and Minkowski-Hlawka theorems.
openaire   +2 more sources

HIGHER-RANK RADON TRANSFORMS ON CONSTANT CURVATURE SPACES

open access: yes, 2022
We study higher-rank Radon transforms of the form f(τ) → ∫ τ⊂ζf(τ) , where τ is a j-dimensional totally geodesic submanifold in the n-dimensional real constant curvature space and ζ is a similar submanifold of dimension k\u3e j.
Rubin, B.
core   +1 more source

Extension sets for real analytic functions and applications to Radon transforms

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
The real analytic character of a function f(x,y) is determined from its behavior along radial directions fθ(s)=f(scosθ,ssinθ) for θ∈E, where E is a “small” set. A support theorem for Radon transforms in the plane is proved. In particular if fθ extends to
Vernor Arguedas, Ricardo Estrada
doaj   +1 more source

Metabolic and Microvascular Risk Factors Associated With Brain Health in Type 1 Diabetes

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT We examined relationships between metabolic factors, microvascular complications, and brain health in adults with type 1 diabetes. Fifty‐one adults were assessed for metabolic risk factors, microvascular complications, and cognitive function, with a subset completing brain MRI.
Jihyun Park   +7 more
wiley   +1 more source

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