Results 11 to 20 of about 22,095,313 (385)

Fractal Analysis of Human Gait Variability via Stride Interval Time Series

open access: yesFrontiers in Physiology, 2020
Fractal analysis of stride interval time series is a useful tool in human gait research which could be used as a marker for gait adaptability, gait disorder, and fall risk among patients with movement disorders.
Angkoon Phinyomark   +4 more
doaj   +2 more sources

Fractal Analysis on Surface Topography of Thin Films: A Review

open access: yesFractal and Fractional, 2022
The topographies of various surfaces have been studied in many fields due to the significant influence that surfaces have on the practical performance of a given sample.
Wenmeng Zhou   +5 more
doaj   +2 more sources

From Fractal Geometry to Fractal Analysis

open access: yesApplied Mathematics, 2016
Euclidian geometry pertained only to the artificial realities of the first, second and third dimensions. Fractal geometry is a new branch of mathematics that proves useful in representing natural phenomena whose dimensions (fractal dimensions) are non-integer values. Fractal geometry was conceived in the 1970s, and mainly developed by Benoit Mandelbrot.
Stefano Beltraminelli   +4 more
openaire   +4 more sources

Hydration and Fractal Analysis on Low-Heat Portland Cement Pastes Using Thermodynamics-Based Methods

open access: yesFractal and Fractional, 2023
Low-heat Portland (LHP) cement is a kind of high-belite cement, which has the characteristic of low hydration heat. Currently, it is extensively used in the temperature control of mass concrete. Based on the thermodynamic database of OPC-based materials,
Yifan Zhou   +9 more
semanticscholar   +1 more source

Fractal Analysis on Pore Structure and Modeling of Hydration of Magnesium Phosphate Cement Paste

open access: yesFractal and Fractional, 2022
Magnesium phosphate cement (MPC) paste is hardened by the acid–base reaction between magnesium oxide and phosphate. This work collects and evaluates the thermodynamic data at 25 ℃ and a pressure of 0.1 MPa and establishes the hydration reaction model of ...
Yuxiang Peng   +5 more
semanticscholar   +1 more source

Influence of MgO on the Hydration and Shrinkage Behavior of Low Heat Portland Cement-Based Materials via Pore Structural and Fractal Analysis

open access: yesFractal and Fractional, 2022
Currently, low heat Portland (LHP) cement is widely used in mass concrete structures. The magnesia expansion agent (MgO) can be adopted to reduce the shrinkage of conventional Portland cement-based materials, but very few studies can be found that ...
Lei Wang   +6 more
semanticscholar   +1 more source

Fractal Analysis of Particle Distribution and Scale Effect in a Soil–Rock Mixture

open access: yesFractal and Fractional, 2022
A soil–rock mixture (SRM) is a type of heterogeneous geomaterial, and the particle distribution of SRM can be described by fractal theory. At present, it is difficult to quantify the fractal dimension of a particle size distribution and understand the ...
X. Fu   +5 more
semanticscholar   +1 more source

Fractal Analysis on Pore Structure and Hydration of Magnesium Oxysulfate Cements by First Principle, Thermodynamic and Microstructure-Based Methods

open access: yesFractal and Fractional, 2021
Magnesium oxysulfate (MOS) cement is a typical eco-friendly cementitious material, which presents excellent performances. In this work, a novel multiscale modeling strategy is proposed to simulate the hydration and pore structure of MOS cement system ...
Jiasheng Huang   +10 more
semanticscholar   +1 more source

Use of fractal analysis in dental images: a systematic review.

open access: yesDento maxillo facial radiology, 2020
OBJECTIVES This study reviewed the use of fractal analysis (FA) in dental images. METHODS A search was performed using PubMed, MEDLINE, LILACS, Web of Science and SCOPUS databases. The inclusion criteria were human studies in the English language, with
Camila Nao Kato   +6 more
semanticscholar   +1 more source

Primality, Fractality, and Image Analysis [PDF]

open access: yesEntropy, 2019
This paper deals with the hidden structure of prime numbers. Previous numerical studies have already indicated a fractal-like behavior of prime-indexed primes. The construction of binary images enables us to generalize this result. In fact, two-integer sequences can easily be converted into a two-color image.
Emanuel Guariglia, Emanuel Guariglia
openaire   +3 more sources

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