Results 31 to 40 of about 306,242 (273)

Coulomb-type interaction under Lorentz symmetry breaking effects [PDF]

open access: yes, 2017
Based on models of confinement of quarks, we analyse a relativistic scalar particle subject to a scalar potential proportional to the inverse of the radial distance and under the effects of the violation of the Lorentz symmetry.
Bakke, K., Belich, H., Vitoria, R. L. L.
core   +3 more sources

Fluorescence Excitation by Enhanced Plasmon Upconversion under Continuous Wave Illumination [PDF]

open access: yes, 2016
We demonstrate effective background-free continuous wave nonlinear optical excitation of molecules that are sandwiched between asymmetrically constructed plasmonic gold nanoparticle clusters. We observe that near infrared photons are converted to visible
Abak, Musa Kurtulus   +8 more
core   +3 more sources

Resonant suppression strategy of impedance remodeling for multi-inverter grid-connected system in weak grid

open access: yes电力工程技术
In weak grid, a multi-inverter grid-connected system may be simultaneously affected by large grid impedance and background harmonics. The interaction between inverter and grid is enhanced by the large grid impedance, resulting in resonance problems ...
ZHANG Shicong   +4 more
doaj   +1 more source

Comments on the Background Field Method in Harmonic Superspace: Non-holomorphic Corrections in N=4 SYM [PDF]

open access: yes, 1998
We analyse the one-loop effective action of N=4 SYM theory in the framework of the background field formalism in N=2 harmonic superspace. For the case of on-shell background N=2 vector multiplet we prove that the effective action is free of harmonic ...
IOSEPH L. BUCHBINDER   +2 more
core   +2 more sources

Time-varying harmonic impedance estimation based on locally-geographically weighted regression

open access: yes电力工程技术
In existing estimation methods for utility harmonic impedance, it is commonly assumed that the harmonic impedance remains invariant, which often diverges from actual conditions.
XU Fangwei   +5 more
doaj   +1 more source

Multi-Point Time-Synchronized Waveform Recording for the Analysis of Wide-Area Harmonic Propagation

open access: yesApplied Sciences, 2020
This paper focuses on studying the phenomenon of harmonic distortion propagation through distribution networks. This phenomenon is governed by a combination of factors involving the nature of harmonic loads and their dynamic interaction, the influence of
Stanislav Babaev   +4 more
doaj   +1 more source

Active Filter Reference Calculations Based on Customers’ Current Harmonic Emissions

open access: yesEnergies, 2021
This paper deals with harmonics compensation in industrial and distribution networks using an active filter (AcF). When defining the AcF’s reference current, it is important to properly consider the network background harmonic distortion.
Aljaž Špelko   +3 more
doaj   +1 more source

Relightful Harmonization: Lighting-Aware Portrait Background Replacement

open access: yes2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
Portrait harmonization aims to composite a subject into a new background, adjusting its lighting and color to ensure harmony with the background scene. Existing harmonization techniques often only focus on adjusting the global color and brightness of the foreground and ignore crucial illumination cues from the background such as apparent lighting ...
Ren, Mengwei   +7 more
openaire   +2 more sources

A weighted damping strategy for improving the adaptability of converter to weak grid

open access: yesDiance yu yibiao
Active damping can significantly improve the adaptability of converter to weak grid, however, when the PCC (point of common coupling) voltage harmonics are used for active damping control, the suppression ability of the system on the background harmonic ...
XU Jia, YANG Shude, ZHANG Xinwen
doaj   +1 more source

Current-Harmonic-Based Active Damping Strategy

open access: yesZhongguo dianli, 2023
The voltage-harmonic-based active damping control (VHBAD) can improve the adaptability of the converter to the weak grid, but it will weaken the suppression ability of background harmonic voltage disturbance and affect the quality of grid-connected ...
Jia XU, Shude YANG, Xinwen ZHANG
doaj   +1 more source

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