Results 11 to 20 of about 35,280,093 (311)

Positive solutions for a nonhomogeneous Schrödinger-Poisson system

open access: yesAdvances in Nonlinear Analysis, 2022
In this article, we consider the following Schrödinger-Poisson system: −Δu+u+k(x)ϕ(x)u=f(x)∣u∣p−1u+g(x),x∈R3,−Δϕ=k(x)u2,x∈R3,\left\{\begin{array}{ll}-\Delta u+u+k\left(x)\phi \left(x)u=f\left(x)| u{| }^{p-1}u+g\left(x),& x\in {{\mathbb{R}}}^{3 ...
Zhang Jing, Niu Rui, Han Xiumei
doaj   +1 more source

Minimum energy control of fractional descriptor positive discrete-time linear systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2014
Necessary and sufficient conditions for the positivity and reachability of fractional descriptor positive discrete-time linear systems are established.
Kaczorek Tadeusz
doaj   +1 more source

Determination of vibrational and rotational temperatures in highly constricted nitrogen plasmas by fitting the second positive system of N2 molecules

open access: yes, 2015
Highly constricted plasmas are an active research area because of their ability to generate high activity of plasma beams, which exhibit potential in applications of material processing and film deposition.
Q. Zhang   +7 more
semanticscholar   +1 more source

Positivity and stability of fractional descriptor time–varying discrete–time linear systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2016
The Weierstrass–Kronecker theorem on the decomposition of the regular pencil is extended to fractional descriptor time-varying discrete-time linear systems. A method for computing solutions of fractional systems is proposed.
Kaczorek Tadeusz
doaj   +1 more source

Decentralized stabilization of fractional positive descriptor continuous-time linear systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2018
A method for decentralized stabilization of fractional positive descriptor linear systems is proposed. Necessary and sufficient conditions for decentralized stabilization of fractional positive descriptor linear systems are established. The efficiency of
Kaczorek Tadeusz
doaj   +1 more source

Stability of Interval Positive Fractional Discrete–Time Linear Systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2018
The aim of this work is to show that interval positive fractional discrete-time linear systems are asymptotically stable if and only if the respective lower and upper bound systems are asymptotically stable.
Kaczorek Tadeusz
doaj   +1 more source

Reachability of standard and fractional continuous-time systems with constant inputs

open access: yesArchives of Control Sciences, 2016
The reachability of standard and fractional-order continuous-time systems with constant inputs is addressed. Positive and non-positive continuous-time linear systems are considered.
Rogowski Krzysztof
doaj   +1 more source

Absolute stability of a class of fractional positive nonlinear systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2019
The positivity and absolute stability of a class of fractional nonlinear continuous-time and discrete-time systems are addressed. Necessary and sufficient conditions for the positivity of this class of nonlinear systems are established.
Kaczorek Tadeusz
doaj   +1 more source

State-of-the-Art Review of Positive Energy Building and Community Systems

open access: yesEnergies, 2021
A positive energy system that produces more renewable energy than its demand while ensuring appropriate comfort levels is an excellent path towards increasing the portion of renewable energy, reducing carbon emission, and increasing the energy system’s ...
Gokula Manikandan Senthil Kumar   +1 more
doaj   +1 more source

Constrained State Regulation Problem of Descriptor Fractional-Order Linear Continuous-Time Systems

open access: yesFractal and Fractional
This paper deals with the constrained state regulation problem (CSRP) of descriptor fractional-order linear continuous-time systems (DFOLCS) with order ...
Hongli Yang, Xindong Si, Ivan G. Ivanov
doaj   +1 more source

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