Results 21 to 30 of about 3,079 (209)

GAN‐LSTM‐3D: An efficient method for lung tumour 3D reconstruction enhanced by attention‐based LSTM

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract Three‐dimensional (3D) image reconstruction of tumours can visualise their structures with precision and high resolution. In this article, GAN‐LSTM‐3D method is proposed for 3D reconstruction of lung cancer tumours from 2D CT images. Our method consists of three phases: lung segmentation, tumour segmentation, and tumour 3D reconstruction. Lung
Lu Hong   +12 more
wiley   +1 more source

Rigidity, Graphs and Hausdorff Dimension [PDF]

open access: yes, 2021
For a compact set $E \subset \mathbb R^d$ and a connected graph $G$ on $k+1$ vertices, we define a $G$-framework to be a collection of $k+1$ points in $E$ such that the distance between a pair of points is specified if the corresponding vertices of $G$ are connected by an edge.
Chatzikonstantinou, N.   +3 more
openaire   +2 more sources

On the Hausdorff Dimension of Newhouse Phenomena [PDF]

open access: yesAnnales Henri Poincaré, 2015
We show that at the vicinity of a generic dissipative homoclinic unfolding of a surface diffeomorphism, the Hausdorff dimension of the set of parameters for which the diffeomorphism admits infinitely many periodic sinks is at least 1/2.
Berger, Pierre, De Simoi, Jacopo
openaire   +3 more sources

Coordinate d-dimension prints

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
We define the coordinate d-dimension print to distinguish sets of same fractal dimension, and investigate its geometrical properties.
Hung Hwan Lee, In Soo Baek
doaj   +1 more source

Hausdorff–Lebesgue Dimension of Attractors [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, 2017
Definitions of Hausdorff–Lebesgue measure and dimension are introduced. Combination of Hausdorff and Lebesgue ideas are used. Methods for upper and lower estimations of attractor dimensions are developed.
openaire   +2 more sources

The Wire Is Not the Territory: Understanding Representational Drift in Olfaction With Dynamical Systems Theory

open access: yesTopics in Cognitive Science, EarlyView., 2023
Abstract Representational drift is a phenomenon of increasing interest in the cognitive and neural sciences. While investigations are ongoing for other sensory cortices, recent research has demonstrated the pervasiveness in which it occurs in the piriform cortex for olfaction.
Ann‐Sophie Barwich   +1 more
wiley   +1 more source

Intersections of Projections and Slicing Theorems for the Isotropic Grassmannian and the Heisenberg group

open access: yesAnalysis and Geometry in Metric Spaces, 2020
This paper studies the Hausdorff dimension of the intersection of isotropic projections of subsets of ℝ2n, as well as dimension of intersections of sets with isotropic planes. It is shown that if A and B are Borel subsets of ℝ2n of dimension greater than
Román-García Fernando
doaj   +1 more source

Hausdorff Dimension and Quasiconformal Mappings [PDF]

open access: yesJournal of the London Mathematical Society, 1973
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/135677/1/jlms0504 ...
Gehring, F. W., Väisälä, J.
openaire   +3 more sources

Some typical properties of dimensions of sets and measures

open access: yesAbstract and Applied Analysis, 2005
This paper contains a review of recent results concerning typical properties of dimensions of sets and dimensions of measures. In particular, we are interested in the Hausdorff dimension, box dimension, and packing dimension of sets and in the Hausdorff ...
Józef Myjak
doaj   +1 more source

A Note on Topological Properties of Non-Hausdorff Manifolds

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
The notion of compatible apparition points is introduced for non-Hausdorff manifolds, and properties of these points are studied. It is well known that the Hausdorff property is independent of the other conditions given in the standard definition of a ...
Steven L. Kent   +2 more
doaj   +1 more source

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