Results 61 to 70 of about 2,263,291 (335)

Cyclicity and Persistence of Earth's Evolution Over Time: Wavelet and Fractal Analysis

open access: yesGeophysical Research Letters, 2018
Accessing the cyclicity and persistence of geological records with time series analysis deepens our understanding of Earth's long‐term evolution. In this study, time series from recent global zircon U‐Pb age and δ18O databases are analyzed using wavelet ...
Guoxiong Chen, Qiuming Cheng
doaj   +1 more source

Detection and classification of breast cancer in wavelet sub-bands of fractal segmented cancerous zones

open access: yesJournal of Medical Signals and Sensors, 2015
Recent studies on wavelet transform and fractal modeling applied on mammograms for the detection of cancerous tissues indicate that microcalcifications and masses can be utilized for the study of the morphology and diagnosis of cancerous cases.
Alireza Shirazinodeh   +3 more
doaj   +1 more source

The reduced differential transform and variational iteration methods for 3D diffusion model in fractal heat transfer within local fractional operators

open access: yes, 2018
Hossein JAFARI *, Hassan Kamil JASSIM , and Javad VAHIDI a,d a Department of Mathematical Sciences, University of South Africa, Pretoria, South Africa b Department of Mathematics, University of Mazandaran, Babolsar, Iran c Department of Mathematics ...
H. Jafari   +2 more
semanticscholar   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

open access: yesAdvanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini   +3 more
wiley   +1 more source

A fractal derivative constitutive model for three stages in granite creep

open access: yesResults in Physics, 2017
In this paper, by replacing the Newtonian dashpot with the fractal dashpot and considering damage effect, a new constitutive model is proposed in terms of time fractal derivative to describe the full creep regions of granite.
R. Wang, Z. Zhuo, H.W. Zhou, J.F. Liu
doaj   +1 more source

Ductility Tuning via Cluster Network Characteristics of Porous Components

open access: yesAdvanced Materials Technologies, EarlyView.
Network optimization via cluster characteristics induced by interaction of stress concentration is proposed, demonstrating increased cluster size and dispersion in non‐uniform porous components. The optimized structures exhibit, for the first time, that enhanced ductility and damage progression is controllable through zigzag cluster network designed by
Ryota Toyoba   +4 more
wiley   +1 more source

Class of fractal transforms

open access: yesElectronics Letters, 1993
A general approach to the fractal coding of images is presented, in which image blocks are represented by least squares approximations by fractal functions. Previously known fractal transforms are subsets of this method, which is called the Bath fractal transform (BFT).
openaire   +1 more source

Wearable and Implantable Devices for Continuous Monitoring of Muscle Physiological Activity: A Review

open access: yesAdvanced Science, EarlyView.
Recent advances in materials and device engineering enable continuous, real‐time monitoring of muscle activity via wearable and implantable systems. This review critically summarizes emerging technologies for tracking electrophysiological, biomechanical, and oxygenation signals, outlines fundamental principles, and highlights key challenges and ...
Zhengwei Liao   +4 more
wiley   +1 more source

Using He’s Two-Scale Fractal Transform to Predict the Dynamic Response of Viscohyperelastic Elastomers with Fractal Damping

open access: yesFractal and Fractional
This article aims to clarify the applicability of He’s two-scale fractal dimension transform by replacing tα with τ. It demonstrates the potential to capture the influence of the fractal parameter on the system’s damping frequency, particularly when the ...
Alex Elías-Zúñiga   +3 more
doaj   +1 more source

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