Results 81 to 90 of about 3,926,530 (307)

Evaluating the Fractal Pattern of the Von Koch Island Using Richardson’s Method

open access: yesFractal and Fractional
The principles of fractal geometry have revolutionized the characterization of complex geometric objects since Benoit Mandelbrot’s groundbreaking work.
Maxence Bigerelle   +2 more
doaj   +1 more source

Fractal Dimension of Fracture Surface in Rock Material after High Temperature

open access: yesAdvances in Materials Science and Engineering, 2015
Experiments on granite specimens after different high temperature under uniaxial compression were conducted and the fracture surfaces were observed by scanning electron microscope (SEM).
Z. Z. Zhang
doaj   +1 more source

Modeling Urban Growth and Form with Spatial Entropy

open access: yesComplexity, 2020
Entropy is one of the physical bases for the fractal dimension definition, and the generalized fractal dimension was defined by Renyi entropy. Using the fractal dimension, we can describe urban growth and form and characterize spatial complexity.
Yanguang Chen
doaj   +1 more source

Fractal: formas de reconocer el mundo a través de cálculos matemáticos totalmente nuevos y atractivos la aventura del saber [PDF]

open access: yes, 2013
El Grupo de Matemáticas “Henry Hopf”, iniciado en 2011, pretende responder el cuestionamiento: ¿Es posible conocer y aplicar los conceptos de la teoría de los fractales a nivel elemental, de forma que puedan generarse nuevos conocimientos en el contexto
Hopf, Henry
core  

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

Reprogramming the Myocardial Infarction Conductive Microenvironment with Superconductive Ionic Patch for Cardiac Function Repair

open access: yesAdvanced Science, EarlyView.
A super‐conductive ionic patch reprograms the post‐infarction microenvironment by enabling stable ionic migration and electrical signal transmission within damaged myocardium. The patch rapidly adheres to cardiac tissue, enhances conduction velocity, suppresses excitation‐contraction decoupling, and promotes structural and functional cardiac repair in ...
Changyong Wang   +8 more
wiley   +1 more source

Grain size and shape fractal characteristics of gangue in the process of 'jaw breaking-ball milling'.

open access: yesPLoS ONE, 2023
This study investigates the fractal characteristics of the particle size and shape distribution of gangue powder in the "jaw crushing-ball milling" process using mudstone gangue.
Wenzhe Gu   +3 more
doaj   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

open access: yesAdvanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang   +7 more
wiley   +1 more source

Nano-Scale Pore Structure and Its Multi-Fractal Characteristics of Tight Sandstone by N2 Adsorption/Desorption Analyses: A Case Study of Shihezi Formation from the Sulige Gas Filed, Ordos Basin, China

open access: yes, 2020
Fractal dimension is a critical parameter to evaluate the heterogeneity of complex pore structure in tight sandstone gas and other low permeability reservoirs. To quantify the fractal dimension of tight sandstone at various pore size classes and evaluate
Zhelin Wang   +3 more
semanticscholar   +1 more source

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