Results 41 to 50 of about 2,719 (189)

Multi‐Frame Image Registration for Automated Ventricular Function Assessment in Single Breath‐Hold Cine MRI Using Limited Labels

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This study aims to develop an automated framework for operator‐independent assessment of cardiac ventricular function from highly accelerated images. Methods We introduce a deep learning framework that generates reliable ventricular volumetric parameters and strain measures from fully sampled and retrospectively accelerated MR images ...
Aya Ghoul   +7 more
wiley   +1 more source

Square packings and rectifiable doubling measures

open access: yesDiscrete Analysis
Square packings and rectifiable doubling measures, Discrete Analysis 2025:3, 40 pp. A measure $\mu$ on a metric space is $m$-rectifiable if it assigns full measure to a countable collection of Lipschitz images of bounded subsets of $\mathbb{R}^m ...
Matthew Badger, Raanan Schul
doaj   +1 more source

Atomic Scale Visualization of Vibrational Modes in Armchair Graphene Nanoribbon

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
To visualize the vibrational modes of armchair graphene nanoribbons and verify theories, a functionalized scanning tunneling tip is used to enhance the inelastic tunneling channel over the elastic one. Results show that edge phonons are localized than bulk phonons with little influence from substrate interactions.
Stefan Šćepanović   +4 more
wiley   +1 more source

Dimension inequalities of multifractal Hausdorff measures and multifractal packing measures

open access: yesMATHEMATICA SCANDINAVICA, 2000
Given a Borel probability measure \(\mu\) on \({\mathbb R}^n\), the core of multifractal analysis consists of computing the (Hausdorff) dimensional multifractal spectrum of \(\mu\), that is, \[ f_{\mu}(\alpha)=\text{ dim}\left\{x: \alpha_{\mu}(x):= \lim_{r\rightarrow 0}{\log\mu B(x,r)\over \log r}=\alpha\right\}, \] and then establishing whether the ...
openaire   +3 more sources

On interpreting Patterson–Sullivan measures of geometrically finite groups as Hausdorff and packing measures [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2015
We provide a new proof of a theorem whose proof was sketched by Sullivan [Disjoint spheres, approximation by imaginary quadratic numbers, and the logarithm law for geodesics.Acta Math.149(3–4) (1982), 215–237], namely that if the Poincaré exponent of a geometrically finite Kleinian group$G$is strictly between its minimal and maximal cusp ranks, then ...
openaire   +3 more sources

Limit Orders and Knightian Uncertainty

open access: yesInternational Economic Review, EarlyView.
ABSTRACT A wide variety of financial instruments allows risk‐averse traders to reduce their exposure to risk. This raises the question of what financial instruments allow ambiguity‐averse traders to reduce their exposure to ambiguity. We show in this paper that price‐contingent orders, such as limit orders, are sufficient: In a two‐period trading model,
Michael Greinecker, Christoph Kuzmics
wiley   +1 more source

Deep learning assisted high‐resolution microscopy image processing for phase segmentation in functional composite materials

open access: yesJournal of Microscopy, EarlyView.
Abstract In the domain of battery research, the processing of high‐resolution microscopy images is a challenging task, as it involves dealing with complex images and requires a prior understanding of the components involved. The utilisation of deep learning methodologies for image analysis has attracted considerable interest in recent years, with ...
Ganesh Raghavendran   +7 more
wiley   +1 more source

Notions of denseness

open access: yes, 1999
The notion of a completely saturated packing [Fejes Toth, Kuperberg and Kuperberg, Highly saturated packings and reduced coverings, Monats. Math. 125 (1998) 127-145] is a sharper version of maximum density, and the analogous notion of a completely ...
Fejes Tóth   +4 more
core   +3 more sources

Dynamically Consistent Analysis of Realized Covariations in Term Structure Models

open access: yesMathematical Finance, EarlyView.
ABSTRACT In this article, we show how to analyze the covariation of bond prices nonparametrically and robustly, staying consistent with a general no‐arbitrage setting. This is, in particular, motivated by the problem of identifying the number of statistically relevant factors in the bond market under minimal conditions.
Dennis Schroers
wiley   +1 more source

Exact Hausdorff and Packing measure of certain Cantor sets, not necessarily self-similar or homogeneous [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2019
We compute the exact Hausdorff and Packing measures of linear Cantor sets which might not be self similar or homogeneous . The calculation is based on the local behavior of the natural probability measure supported on the sets.
Leandro Zuberman, Leandro Zuberman
openaire   +4 more sources

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