Results 1 to 10 of about 692,860 (164)

Pseudosymmetric Spaces as Generalization of Symmetric spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2023
In this paper, the concept of a pseudosymmetric space which is a natural generalization of the concept of a symmetric space is defined. All basic concepts such as the Luxemburg representation theorem, the Boyd indices, the fundamental function and its ...
Bilal Bilalov   +3 more
doaj   +1 more source

A Static and Dynamic Analysis of A High-Speed Turbo Machine Foundation [PDF]

open access: yesEngineering and Technology Journal, 2023
The foundation plays a significant role in safe and efficient turbo machinery operation. Turbomachinery generates harmonic load on the foundation due to its high-speed rotating motion, which causes vibration in the machinery foundation.
Ameer Ahmed   +2 more
doaj   +1 more source

$L_{p;r} $ spaces: Cauchy Singular Integral, Hardy Classes and Riemann-Hilbert Problem in this Framework [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2019
In the present work the space  $L_{p;r} $ which is continuously embedded into $L_{p} $  is introduced. The corresponding Hardy spaces of analytic functions are defined as well. Some properties of the functions from these spaces are studied.
Ali Huseynli, Asmar Mirzabalayeva
doaj   +1 more source

CRP, PCT, and D-dimer as Biomarkers for Disease Severity in COVID-19 Patients: A Retrospective Study in Kinshasa, Democratic Republic of Congo

open access: yesJournal of Biostatistics and Epidemiology, 2023
Background: The COVID-19 pandemic has had a significant impact on global health, resulting in more than 6 million reported deaths worldwide as of April 2023.
Tasnime Hamdeni   +3 more
doaj   +1 more source

Adaptive Harmonic Analysis [PDF]

open access: yes, 1991
In this paper we describe a new approach to the harmonic analysis of the tide. For a number of reasons the harmonic constants are not really constant but vary slowly in time.
Heemink, Arnold   +2 more
core   +7 more sources

Simultaneous Detection of Gas Concentration and Light Intensity Based on Dual-Quartz-Enhanced Photoacoustic-Photothermal Spectroscopy

open access: yesPhotonics, 2023
This research proposes a method for the simultaneous acquisition of the second harmonic (2f) signal of quartz-enhanced photoacoustic spectroscopy (QEPAS) and the first harmonic (1f) signal of quartz-enhanced photothermal spectroscopy (QEPTS) based on the
Hao Liu   +5 more
doaj   +1 more source

A new approach for harmonic detection based on eliminating oscillatory coupling effects in microgrids

open access: yesIET Renewable Power Generation, 2023
The primary goal of grid‐connected microgrids is to control the active and reactive power, which is reachable by the inner current control loop in the control structure of power converters.
Mojtaba Ahmadi   +3 more
doaj   +1 more source

Observations of Surface Currents and Tidal Variability Off of Northeastern Taiwan from Shore-Based High Frequency Radar

open access: yesRemote Sensing, 2021
A network of high-frequency radars (HFRs) has been deployed around Taiwan. The wide-area data coverage is dedicated to revealing near real-time sea-surface current information. This paper investigates three primary objectives: (1) describing the seasonal
Yu-Ru Chen   +4 more
doaj   +1 more source

On bases from cosines in Lebesgue spaces with variable summability index

open access: yesJournal of Inequalities and Applications, 2016
In this paper the perturbed system of cosines is considered. Under certain conditions on the summability index p ( ⋅ ) $p (\cdot )$ and perturbation, the basicity of this system in Lebesgue spaces L p ( ⋅ ) ( 0 , π ) $L_{p (\cdot )} (0,\pi )$ with ...
Togrul Muradov, Chingiz Hashimov
doaj   +1 more source

»What power art thou?«. Zur Harmonik Henry Purcells am Beispiel der Arie des Cold Genius aus King Arthur [PDF]

open access: yesZeitschrift der Gesellschaft für Musiktheorie, 2006
Henry Purcell überrascht immer wieder durch ungewöhnliche harmonische Wendungen, so auch in der Arie »What power art thou« des Cold Genius aus seiner Oper King Arthur (1691): Bereits das Orchestervorspiel enthält einige Besonderheiten, die sich weder mit
Cornelius Bauer
doaj   +1 more source

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