Results 61 to 70 of about 11,089,487 (322)

Approach of a class of discontinuous dynamical systems of fractional order: existence of the solutions [PDF]

open access: yes, 2010
In this letter we are concerned with the possibility to approach the existence of solutions to a class of discontinuous dynamical systems of fractional order.
Aubin J.-P.   +5 more
core   +1 more source

Fractional Order Compartment Models

open access: yesSIAM Journal on Applied Mathematics, 2017
This paper is an interesting application of fractional order systems. Compartment models are well known and well studied in the literature. To describe the time evolution of a system undergoing reactions between populations in different compartments, often compartment models are used. These are set of differential equations coupled together.
Christopher N. Angstmann   +5 more
openaire   +2 more sources

Modeling and Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM

open access: yesFractal and Fractional
This paper introduces fractional-order capacitors and fractional-order inductors into the conventional integer-order cascaded H-bridge multilevel static compensator (ICHM-STATCOM), thereby constructing the main circuit of the fractional-order cascaded H ...
Junhua Xu   +5 more
doaj   +1 more source

Fractional Order Dynamic Positioning Controller [PDF]

open access: yesTransNav, 2015
Improving the performance of Dynamic Positioning System in such applications as station keeping, position mooring and slow speed references tracking requires improving the position and heading control precision.
Anna Witkowska
doaj   +1 more source

Fractional order mathematical modeling of COVID-19 transmission

open access: yesChaos, Solitons & Fractals, 2020
In this article, the mathematical model with different compartments for the transmission dynamics of coronavirus-19 disease (COVID-19) is presented under the fractional-order derivative.
Shabir Ahmad   +5 more
semanticscholar   +1 more source

Asymptotic behavior of solutions of linear multi-order fractional differential equation systems

open access: yes, 2017
In this paper, we investigate some aspects of the qualitative theory for multi-order fractional differential equation systems. First, we obtain a fundamental result on the existence and uniqueness for multi-order fractional differential equation systems.
Diethelm, Kai   +2 more
core   +1 more source

CFOA-Based Fractional Order PIλDδ Controller [PDF]

open access: yesElectronics, 2017
Conventional Current Feedback Operational Amplifier (CFOA) is not current controllable or not electronically controllable. It is thus of interest to add a current mirror into the CFOA in order to make it current controllable.
Tada Comedang, Pattana Intan
doaj   +1 more source

On Moduli of Smoothness of Fractional Order [PDF]

open access: yesReal Analysis Exchange, 2005
In this paper we consider the properties of moduli of smoothness of fractional order. The main result of the paper describes the equivalence of the modulus of smoothness and a function from some class.
openaire   +3 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Electronically Adjustable Emulator of the Fractional-Order Capacitor

open access: yesElektronika ir Elektrotechnika, 2019
This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I), where the passive elements in the topology are replaced by ...
Jan Dvorak   +4 more
doaj   +1 more source

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