Results 41 to 50 of about 15,101 (215)

A Holographic-Type Model in the Description of Polymer–Drug Delivery Processes

Pharmaceuticals
A unitary model of drug release dynamics is proposed, assuming that the polymer–drug system can be assimilated into a multifractal mathematical object.
Irina Nica, Constantin Volovat, Diana Boboc, Ovidiu Popa, Lacramioara Ochiuz, Decebal Vasincu, Vlad Ghizdovat, Maricel Agop, Cristian Constantin Volovat, Corina Lupascu Ursulescu, Cristian Virgil Lungulescu, Simona Ruxandra Volovat   +11 more
doaj   +1 more source

On the equality of Hausdorff and box counting dimensions

, 1993
By viewing the covers of a fractal as a statistical mechanical system, the exact capacity of a multifractal is computed. The procedure can be extended to any multifractal described by a scaling function to show why the capacity and Hausdorff dimension ...
Feigenbaum M. J., Feigenbaum M. J., Feigenbaum M. J., Ott E., Ronnie Mainieri, Simon B., Vul E. B.   +6 more
core   +1 more source

Study on Multiple Fractal Analysis and Response Characteristics of Acoustic Emission Signals from Goaf Rock Bodies

Sensors, 2022
Based on the actual monitoring data of the acoustic emission (AE) ground pressure monitoring and positioning system, this paper introduces fractal theory and the multifractal detrended fluctuation analysis (MF-DFA) method to estimate the waveform ...
Xuebin Xie, Shaoqian Li, Jiang Guo
doaj   +1 more source

Multifractality in the Movement System When Adapting to Arm Cranking in Wheelchair Athletes, Able-Bodied Athletes, and Untrained People

Fractal and Fractional, 2022
Complexity science has helped neuroscientists shed new light on brain-body coordination during movement performance and motor learning in humans. A critical intuition based on monofractal approaches has been a fractal-like coordination in the movement ...
Laurent M. Arsac, Thierry Weissland
doaj   +1 more source

Stochastic formalism-based seafloor feature discrimination using multifractality of time-dependent acoustic backscatter [PDF]

Nonlinear Processes in Geophysics, 2014
Dual-frequency echo-envelope data acquired using the normal-incidence single-beam echosounder system (SBES) have been examined to study its scale invariant properties.
K. Haris, B. Chakraborty
doaj   +1 more source

Multifractality at Anderson transitions with Coulomb interaction

, 2013
We explore mesoscopic fluctuations and correlations of the local density of states (LDOS) near localization transition in a disordered interacting electronic system.
Burmistrov, I. S., Gornyi, I. V., Mirlin, A. D.   +2 more
core   +1 more source

Data-driven monitoring of the gearbox using multifractal analysis and machine learning methods

MATEC Web of Conferences, 2019
Data-driven diagnostic methods allow to obtain a statistical model of time series and to identify deviations of recorded data from the pattern of the monitored system.
Puchalski Andrzej, Komorska Iwona
doaj   +1 more source

A Novel Method for Control Performance Assessment with Fractional Order Signal Processing and Its Application to Semiconductor Manufacturing

Algorithms, 2018
The significant task for control performance assessment (CPA) is to review and evaluate the performance of the control system. The control system in the semiconductor industry exhibits a complex dynamic behavior, which is hard to analyze.
Kai Liu, YangQuan Chen, Paweł D. Domański, Xi Zhang   +3 more
doaj   +1 more source

Multifractality without fine-tuning in a Floquet quasiperiodic chain

, 2018
Periodically driven, or Floquet, disordered quantum systems have generated many unexpected discoveries of late, such as the anomalous Floquet Anderson insulator and the discrete time crystal.
Das, Arnab, Khaymovich, Ivan M., Moessner, Roderich, Roy, Sthitadhi   +3 more
core   +1 more source

Volatility analysis and forecasting of vegetable prices using an ARMA‐GARCH model: An application of the CF filter and seasonal adjustment method to Korean green onions

Agribusiness, EarlyView.
Abstract The vegetable market experiences significant price fluctuations due to the complex interplay of trend, cyclical, seasonal, and irregular factors. This study takes Korean green onions as an example and employs the Christiano–Fitzgerald filter and the CensusX‐13 seasonal adjustment methods to decompose its price into four components: trend ...
Yiyang Qiao, Byeong‐il Ahn
wiley   +1 more source