Results 51 to 60 of about 10,065 (207)

Stability analysis of COVID-19 outbreak using Caputo-Fabrizio fractional differential equation

open access: yesAIMS Mathematics, 2023
The main aim of this paper is to construct a mathematical model for the spread of SARS-CoV-2 infection. We discuss the modified COVID-19 and change the model to fractional order form based on the Caputo-Fabrizio derivative.
Murugesan Sivashankar   +4 more
doaj   +1 more source

Advanced Virtual Impedance for Power‐Sharing Improvement in Microgrids Using Different SOGI Methods: A Comparative Study

open access: yesEnergy Technology, EarlyView.
Advanced virtual impedance control integrating multiple second‐order generalized integrator (SOGI) variants—SOGI, ESOGI, MSOGI, and DSOGI—enhances power and harmonic sharing accuracy in islanded microgrids. The comparative study quantifies performance–complexity trade‐offs, demonstrating up to 65% total harmonic distortion (THD) reduction and improved ...
Camelia Ait Hammouda   +3 more
wiley   +1 more source

Self-Learning Fuzzy Spiking Neural Network as a Nonlinear Pulse-Position Threshold Detection Dynamic System Based on Second-Order Critically Damped Response Units [PDF]

open access: yes, 2009
Architecture and learning algorithm of self-learning spiking neural network in fuzzy clustering task are outlined. Fuzzy receptive neurons for pulse-position transformation of input data are considered.
Bodyanskiy, Yevgeniy   +2 more
core  

Exploring New Chemical Paths in Quantum AI: Preliminary Accomplishments and Future Perspectives

open access: yesAdvanced Quantum Technologies, EarlyView.
Two new strategies derived from Chemical AI to promote the advancement of sustainable quantum technologies are presented and discussed. The first strategy relies on the chemical implementation of molecular fuzzy sets, which are quantum mixed states associated with chemical microheterogeneous systems. The second strategy relies on photochromic compounds
Pier Luigi Gentili
wiley   +1 more source

Granular Fuzzy Fractional Continuous-Time Linear Systems: Roesser and Fornasini–Marchesini Models

open access: yesFractal and Fractional
In this article, we introduce and investigate two classes of fuzzy fractional two-dimensional continuous-time (FFTDCT) linear systems to deal with uncertainty and fuzziness in system parameters.
Ghulam Muhammad   +3 more
doaj   +1 more source

Numerical analysis of fractional human liver model in fuzzy environment

open access: yesJournal of Taibah University for Science, 2021
Many papers have shown that fractional derivatives are preferable to other operators when the data or information is exact, but this is not the case in practice because we live in an uncertain environment.
Shabir Ahmad   +3 more
doaj   +1 more source

Aspects of coherent states of nonlinear algebras

open access: yes, 2010
Various aspects of coherent states of nonlinear $su(2)$ and $su(1,1)$ algebras are studied. It is shown that the nonlinear $su(1,1)$ Barut-Girardello and Perelomov coherent states are related by a Laplace transform.
Bambah B. A.   +2 more
core   +1 more source

Enhancing generalized spectral clustering with embedding Laplacian graph regularization

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
Abstract An enhanced generalised spectral clustering framework that addresses the limitations of existing methods by incorporating the Laplacian graph and group effect into a regularisation term is presented. By doing so, the framework significantly enhances discrimination power and proves highly effective in handling noisy data.
Hengmin Zhang   +5 more
wiley   +1 more source

Generalized Fuzzy Transform and Nonlocal Laplace Operator

open access: yesIEEE Transactions on Fuzzy Systems
The F-transform has proven to be effective in various applications such as time series analysis, numerical solutions of differential equations, and signal or image processing. The most important parameter of the F-transform is a fuzzy partition initially introduced for one-dimensional spaces, with a few generalizations to higher-dimensional spaces ...
Hana Zámečníková   +3 more
openaire   +2 more sources

On a Fuzzy Problem with Variable Coefficient by Fuzzy Laplace Transform

open access: yesIğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
This study is on solutions of a fuzzy problem with variable coefficient. Solutions are found by fuzzy Laplace transform. Generalized differentiability is used. It is searched whether the solutions are valid 𝛼-level sets or not. Examples are solved on studied problem. Conclusions are given.
openaire   +3 more sources

Home - About - Disclaimer - Privacy