Results 31 to 40 of about 3,948,222 (244)

Estimating the Permeability of Carbonate Rocks from the Fractal Properties of Moldic Pores using the Kozeny-Carman Equation [PDF]

Research Ideas and Outcomes, 2018
Reservoir modeling of carbonate rocks requires a proper understanding of the pore space distribution and its relationship to permeability. Using a pigeonhole fractal model we characterize the fractal geometry of moldic pore spaces and extract the fractal
Adewale Amosu, Hamdi Mahmood, Paul Ofoche   +2 more
doaj   +2 more sources

Fractal Study of the Development Law of Mining Cracks

Fractal and Fractional, 2023
Studying mining fracture development is vital for geotechnical and mining engineering and geological disaster prevention. This research assesses crack effects on rock mass stress equilibrium during coal mining, potentially causing geological disasters ...
Jinsui Wu, Dongyu Xie, Sihai Yi, Shangxian Yin, Dezhi Hu, Yuanyuan Li, Yun Wang   +6 more
doaj   +1 more source

Correlation between Convolution Kernel Function and Error Function of Bone Fractal Operators

Fractal and Fractional, 2023
This article studies the convolutional kernel function of fractal operators in bone fibers. On the basis of the micro-nano composite structure of compact bone, we abstracted the physical fractal space of bone fibers and derived the fractal operators. The
Zhimo Jian, Gang Peng, Dongan Li, Xiaobin Yu, Yajun Yin   +4 more
doaj   +1 more source

Persistent fluctuations in stride intervals under fractal auditory stimulation [PDF]

, 2014
Copyright @ 2014 Marmelat et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and ...
Beek, P.J., Beek, PJ, Andreas Daffertshofer, Kjerstin Torre (355432), Beek Peter J., Daffertshofer, A.; id_orcid, Vivien Marmelat (540065), Daffertshofer, Andreas, Torre Kjerstin, Kjerstin Torre, Marmelat, V, Torre, K, Marmelat Vivien, Marmelat, Vivien, Daffertshofer, A, Beek, P.J.; id_orcid, Torre, K., Peter J Beek, Daffertshofer Andreas, Vivien Marmelat, Beek, Peter J., Peter J. Beek (307441), Torre, Kjerstin, Marmelat, V.C.M., Andreas Daffertshofer (238842), Daffertshofer, A.   +25 more
core   +3 more sources

Deep Learning Pose Estimation for Phenotyping of Co‐Occurring Hyperkinetic Movement Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore whether routine outpatient video combined with deep learning‐based pose estimation and clinically interpretable kinematic features can support multi‐label phenotyping of co‐occurring hyperkinetic movement disorders (HMDs).
Laura Cif, Diane Demailly, Gabriella A. Horvàth, Juan Dario Ortigoza Escobar, Nathalie Dorison, Mayté Castro Jiménez, Cécile A. Hubsch, Thomas Wirth, Gun‐Marie Hariz, Sophie Huby, Morgan Dornadic, Zohra Souei, Muhammad Mushhood Ur Rehman, Simone Hemm, Mehdi Boulaymen, Eduardo M. Moraud, Jocelyne Bloch, Xavier Vasques   +17 more
wiley   +1 more source

Fractal Models for SAR images [PDF]

, 2011
In this thesis the modeling of SAR (Synthetic Aperture Radar) images of natural surfaces described via fractal models is dealt with. A complete theoretical forward model linking the parameters describing the scene observed by the sensor to the stochastic
Zinno, Ivana
core   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Research on a Fractal Dimension Calculation Method for a Nano-Polymer Microspheres Dispersed System

Frontiers in Chemistry, 2021
Polymer microspheres (PMs) are a kind of self-similar volume expansion particle, and their fractal dimension varies with hydration swelling. However, there is no unique fractal dimension calculation method for their characteristics.
Wenyue Zhao, Jinming Yan, Ganggang Hou, Pengxiang Diwu, Tongjing Liu, Jirui Hou, Ruolin Li   +6 more
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

Advanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Fractal Hankel Transform

Fractal and Fractional
This paper explores the extension of classical transforms to fractal spaces, focusing on the development and application of the Fractal Hankel Transform. We begin with a concise review of fractal calculus to set the theoretical groundwork.
Alireza Khalili Golmankhaneh, Hamdullah Şevli, Carlo Cattani, Zoran Vidović   +3 more
doaj   +1 more source