Results 21 to 30 of about 199,008 (263)

Boundedness of the Hilbert transform on Besov spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
The Hilbert transform along curves is of a great importance in harmonic analysis. It is known that its boundedness on $L^p(\mathbb{R}^n)$ has been extensively studied by various authors in different contexts and the authors gave positive results for some
A. Maatoug, S.E. Allaoui
doaj   +1 more source

Three positive solutions for a nonlinear partial discrete Dirichlet problem with ( p , q ) $(p,q)$ -Laplacian operator

open access: yesBoundary Value Problems, 2022
In this paper, we prove the existence of three solutions to a partial difference equation with ( p , q ) $(p,q)$ -Laplacian operator by using critical point theory. Furthermore, based on the strong maximum principle, we prove that the three solutions are
Feng Xiong, Zhan Zhou
doaj   +1 more source

The p-q theory for active filter control: some problems and solutions [PDF]

open access: yesSba: Controle & Automação Sociedade Brasileira de Automatica, 2004
The instantaneous active and reactive power theory or the p-q Theory is widely used to design controllers for active filters. This paper deals with some problems due to the misinterpretations of this theory. A historical background of the theory is presented and the problem caused by distorted voltages at the point of common connection (PCC) is ...
Watanabe, Edson H.   +2 more
openaire   +3 more sources

Single-Phase Shunt Active Power Filter Based on a 5-Level Converter Topology

open access: yesEnergies, 2018
This paper presents a single-phase Shunt Active Power Filter (SAPF) with a multilevel converter based on an asymmetric full-bridge topology capable of producing five distinct voltage levels.
José Gabriel Oliveira Pinto   +5 more
doaj   +1 more source

Unique iterative solution for nonlinear fractional [BF](p,q)[KG-*2]-[BFQ][KG-*4]difference equation based on [BF]ψ-(h,r)[KG-*2]-[BFQ][KG-*4]concave operators

open access: yesJournal of Hebei University of Science and Technology, 2022
In order to enrich the basic theory of boundary value problems of fractional (p,q)[KG-*2]-[KG-*3]difference equations,the solvability of nonlocal problems for a class of nonlinear fractional (p,q)[KG-*2]-[KG-*3]difference equations was investigated ...
Jufang WANG, Si WANG, Changlong YU
doaj   +1 more source

Chern-Simons Theory on L(p,q) Lens Spaces and Localization [PDF]

open access: yesJournal of the Korean Physical Society, 2019
Using localization technique, we calculate the partition function and the expectation value of Wilson loop operator in Chern-Simons theory on general lens spaces L(p,q)(including S2XS1). Our results are consistent with known results.
openaire   +2 more sources

OPTIMAL TUNING OF PI-CONTROLLER OF SHUNT ACTIVE POWER FILTER FOR HARMONICS MITIGATION USING ENHANCED JUMPING SPIDER ALGORITHM [PDF]

open access: yesCarpathian Journal of Electrical Engineering, 2022
The increasing use of power electronic devices has resulted in harmonics that may cause in power systems overheating of equipment, poor power factor and voltage distortion.
Betrand N. ATANGA   +3 more
doaj  

Mersenne Primes in Certain Lucas Sequences [PDF]

open access: yesEPJ Web of Conferences
Prime numbers are the most important numbers in number theory and cryptography. One of such special primes are given by the set of Mersenne primes, that are derived from the form Mn = 2n − 1, where n is a prime number.
Hadi Ahmed H., Hashim Hayder R.
doaj   +1 more source

Phase Coordinate System and p-q Theory Based Methods in Active Filtering Implementation

open access: yesAdvances in Electrical and Computer Engineering, 2013
This paper is oriented towards implementation of the main theories of powers in the compensating current generation stage of a three-phase three-wire shunt active power system.
POPESCU, M., BITOLEANU, A., SURU, V.
doaj   +1 more source

The Relationship Between Physical Activity and Left Ventricular Remodeling in Childhood Cancer Survivors Treated With Anthracyclines: A Cross‐Sectional Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Anthracycline‐related cardiac remodeling precedes heart failure in childhood cancer survivors. The objectives of this study were to determine the relationships between patient‐specific factors, moderate‐to‐vigorous physical activity (MVPA), and cardiac remodeling.
Hari K. Narayan   +15 more
wiley   +1 more source

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