Results 11 to 20 of about 26,332,569 (198)
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
Harmonic analysis and ultracontractivity [PDF]
Let ( T t
Cowling, M, MEDA, STEFANO
openaire +3 more sources
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
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
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
Fractional Frequency Transmission is a competitive technology for offshore wind power transmission. Modular Multilevel Matrix Converter (M3C) plays a key role in a Fractional Frequency Transmission System (FFTS) as the frequency changer.
Jiajie Luo +4 more
semanticscholar +1 more source
Quantum Harmonic Analysis on Lattices and Gabor Multipliers [PDF]
We develop a theory of quantum harmonic analysis on lattices in $${\mathbb {R}}^{2d}$$ R 2 d . Convolutions of a sequence with an operator and of two operators are defined over a lattice, and using corresponding Fourier transforms of sequences and ...
Eirik Skrettingland
semanticscholar +1 more source
On bases from cosines in Lebesgue spaces with variable summability index
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]
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
Resonator-based metering of power components according to IEEE Standard 1459-2010 [PDF]
This paper proposes an accurate and computationally efficient implementation of the IEEE Std. 1459-2010 for power measurements. An implementation is based on digital resonators embedded in a feedback loop. In the first algorithm stage, the unknown signal
Kušljević Miodrag +2 more
doaj +1 more source

