Results 121 to 130 of about 795,040 (367)

Harmonic maps and biharmonic Riemanian submersions [PDF]

arXiv, 2018
Characterizations for Riemannian submersions to be harmonic or biharmonic are shown. Examples of biharmonic but not harmonic Riemannian submersions are shown.
arxiv  

Near‐Field Phonon Nanoscopy and Imaging of Structural Variants in Mixed Phase BiFeO3

Advanced Functional Materials, EarlyView.
Nano‐Fourier transform infrared spectroscopy and scattering scanning near‐field optical microscopy imaging reveal the phonon response of nanoscale phase variants in mixed‐phase BiFeO3 (BFO). Direct mid‐infrared imaging of associated distinct vibrational signatures is used as a non‐invasive optical detection method for electrical switching of ...
Dawei Zhang, En‐Ming You, Lei Wang, Byung‐Kweon Jang, Tanzeela Yousaf, Pengfei Zhang, Jincheol Kim, Chan‐Ho Yang, Jan Seidel   +8 more
wiley   +1 more source

A Composite Strategy for Harmonic Compensation in Standalone Inverter Based on Linear Active Disturbance Rejection Control

Energies, 2019
This paper proposes a harmonic compensation control with disturbance rejection function for a standalone inverter. Due to the LC type three-phase three-leg inverter is connected to nonlinear loads, low-order harmonic components appears in the inverter ...
Hui Li, Yue Qu, Junwei Lu, Shuang Li
doaj   +1 more source

The norm of the harmonic Bergman projection and Besov space [PDF]

arXiv, 2017
We estimate the norm of the harmonic Bergman projection in the context of harmonic Besov spaces. We obtain the two-side norm estimates in general Lp-case.
arxiv  

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

Advanced Functional Materials, EarlyView.
Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia, Yuming Zhao, Meitong Nie, Benjamin Pittelkau, Aditya Garg, Junyeob Song, Wenqi Zhu, Henri Lezec, Amit Agrawal, Wei Zhou   +9 more
wiley   +1 more source

Impact of Multiple Grid-Connected Solar PV Inverters on Harmonics in the High-Frequency Range

Energies
In recent years, integration of solar photovoltaic (PV) systems into distribution networks has been increasing rapidly, as it has become the most promising renewable energy source (RES) in the transition of power generation from centralised to ...
Kasun Peiris, Sean Elphick, Jason David, Duane Robinson   +3 more
doaj   +1 more source

Active Power Filtering Using the ZDPC Method under Unbalanced and Distorted Grid Voltage Conditions

Energies, 2015
In this paper, we propose a new Zero Direct Power Control (ZDPC) technique for active compensation of harmonics and reactive power, using shunt active power filter (SAPF), based on cancellation of instantaneous active and reactive power disturbances by ...
Kamel Djazia, Fateh Krim, Abdelmadjid Chaoui, Mustapha Sarra   +3 more
doaj   +1 more source

Discovery of an Intrinsic Antiferromagnetic Semiconductor EuSc2Te4 With Magnetism‐Driven Nonlinear Transport

Advanced Functional Materials, EarlyView.
EuSc₂Te₄, an antiferromagnetic semiconductor, exhibits a nonlinear Hall effect (NLHE) characterized by quadratic current–voltage behavior. Combined experimental and theoretical studies reveal that this NLHE is linked to its antiferromagnetism and involves contributions from the quantum metric.
Seng Huat Lee, Yufei Zhao, Noble Gluscevich, Hemian Yi, Zachary Morgan, Huibo Cao, Jahyun Koo, Yu Wang, Jingyang He, Venkatraman Gopalan, Yuanxi Wang, Weiwei Xie, CuiZu Chang, Qiang Zhang, Binghai Yan, Zhiqiang Mao   +15 more
wiley   +1 more source

HARMONIC WAVE SOLUTIONS OF THE NON-LINEAR VORTICITY EQUATION FOR A ROTATING VISCOUS FLUID [PDF]

, 1954
Shih-Kung Kao
openalex   +1 more source

Harmonic and relative harmonic dimensions [PDF]

Annales Academiae Scientiarum Fennicae. Series A. I. Mathematica, 1985
Mitsuru Nakai, Leo Sario
openaire   +2 more sources