Training Deep Learning Based Dynamic MR Image Reconstruction Using Synthetic Fractals. [PDF]
Magn Reson MedABSTRACT Purpose To investigate whether synthetically generated fractal data can be used to train deep learning (DL) models for dynamic MRI reconstruction, thereby avoiding the privacy, licensing, and availability limitations associated with cardiac MR training datasets.
Raman A +10 more
europepmc +2 more sources
A New Digital Signature Scheme Based on Mandelbrot and Julia Fractal Sets. [PDF]
, 2007 This paper describes a new cryptographic digital signature scheme based on Mandelbrot and Julia fractal sets. Having fractal based digital signature scheme is possible due to the strong connection between the Mandelbrot and Julia fractal sets.
Alia, Mohammad Ahmad, Samsudin, Azman
core +1 more source
Convolution Kernel Function and Its Invariance Properties of Bone Fractal Operators
Fractal and FractionalThis article studies the error function and its invariance properties in the convolutional kernel function of bone fractal operators. Specifically, the following contents are included: (1) demonstrating the correlation between the convolution kernel ...
Zhimo Jian +4 more
doaj +1 more source
Day and Night Changes of Cardiovascular Complexity: A Multi-Fractal Multi-Scale Analysis
Entropy, 2020 Recently, a multifractal-multiscale approach to detrended fluctuation analysis (DFA) was proposed to evaluate the cardiovascular fractal dynamics providing a surface of self-similarity coefficients α(q,τ), function of the scale τ, and moment order q.
Paolo Castiglioni +3 more
doaj +1 more source
Myocardial Perfusion Defects in Hypertrophic Cardiomyopathy Mutation Carriers
Journal of the American Heart Association, EarlyView., 2021 Background Impaired myocardial blood flow (MBF) in the absence of epicardial coronary disease is a feature of hypertrophic cardiomyopathy (HCM). Although most evident in hypertrophied or scarred segments, reduced MBF can occur in apparently normal segments.
Rebecca K. Hughes +14 more
wiley +1 more source
Interfacial contact stiffness of fractal rough surfaces
Scientific Reports, 2017 In this work we describe a theoretical model that predicts the interfacial contact stiffness of fractal rough surfaces by considering the effects of elastic and plastic deformations of the fractal asperities.
Dayi Zhang +4 more
doaj +1 more source
Complexity in the scaling of velocity fluctuations in the high-latitude F-region ionosphere [PDF]
Annales Geophysicae, 2008 The temporal scaling properties of F-region velocity fluctuations, δvlos, were characterised over 17 octaves of temporal scale from τ=1 s to <1 day using a new data base of 1-s time resolution SuperDARN radar measurements.
M. L. Parkinson
doaj +1 more source
The nonlocal problem for fractal diffusion equation
Міжнародний науково-технічний журнал "Проблеми керування та інформатики", 2023 Over the past few decades, the theory of pseudodifferential operators (PDO) and equations with such operators (PDE) has been intensively developed. The authors of a new direction in the theory of PDE, which they called parabolic PDE with non-smooth ...
Ярослав Михайлович Дрінь +2 more
doaj +1 more source
Emergence of a Hexagonal Fe2S2 Single Layer Without a Bulk Counterpart via Phase Transformation
Advanced Functional Materials, EarlyView.Upon annealing, single‐layer Mackinawite iron sulfide transforms into a previously unknown hexagonal Fe2S2${\rm Fe}_2{\rm S}_2$ phase with β$\beta$‐CuI structure. STM, LEED, and first‐principles calculations identify the structure and show that electronic correlations and magnetic order are important for its stability.
Affan Safeer +10 more
wiley +1 more source
Roughness signature of tribological contact calculated by a new method of peaks curvature radius estimation on fractal surfaces [PDF]
, 2013 This paper proposes a new method of roughness peaks curvature radii calculation and its application to tribological contact analysis as characteristic signature of tribological contact.
Bigerelle, M. +18 more
core +1 more source