Results 71 to 80 of about 11,234,242 (322)

SEISMO-ELECTROMAGNETIC PHENOMENA IN TECTONICALLY ACTIVE REGIONS [PDF]

, 2010
This work presents a research plan that aims to monitor seismo-electromagnetic signals in seismic active regions. Two effects will be considered: electromagnetic field emissions and radio broadcastings.
Bezzeghoud, M., Biagi, P.F., Borges, J.F., Caldeira, B., Manso, M., Reis, A.H., Rosa, R., Salgueira, M.A., Silva, H.G., Tlemçani, M.   +9 more
core  

Nonrelativistic anyons in external electromagnetic field

, 2005
The first-order, infinite-component field equations we proposed before for non-relativistic anyons (identified with particles in the plane with noncommuting coordinates) are generalized to accommodate arbitrary background electromagnetic fields ...
Bak, Ballesteros, Banerjee, Bellucci, Berezin, Brihaye, Brink, Cortes, Cortes, Dirac, Dirac, Dunne, Dunne, Duval, Duval, Duval, Ezawa, Ghosh, Ghosh, Ghosh, Girvin, Gitman, Grigore, Grigore, Horváthy, Horváthy, Horváthy, Horváthy, Horváthy, Jackiw, Laughlin, Lozano, Lukierski, Lukierski, Lévy-Leblond, Lévy-Leblond, M.S. Plyushchay, P.A. Horváthy, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Polyakov, Semenoff, Stichel, Wilczek, Witten   +50 more
core   +2 more sources

Compact Circular/Linear Polarization Dual-Band Prime-Focus Feed for Space Communication

International Journal of Antennas and Propagation, 2012
We propose a novel, compact, prime-focus antenna feed for space communication. The feed requires full-wave simulator optimization for a given parabolic reflector and is designed to operate simultaneously on two bands, offering LHC/RHC polarizations for ...
Rastislav Galuscak, Pavel Hazdra, Milos Mazanek   +2 more
doaj   +1 more source

Demonstration of a Hybrid FSO/VLC Link for the Last Mile and Last Meter Networks

IEEE Photonics Journal, 2019
In this paper, a hybrid free-space optical and visible light communication (FSO/VLC) system was experimentally demonstrated as a solution to overcome the last mile and last meter access networks bandwidth bottleneck. We evaluate the system performance of
Petr Pesek, Stanislav Zvanovec, Petr Chvojka, Zabih Ghassemlooy, Paul Anthony Haigh   +4 more
doaj   +1 more source

Upper bounds on absorption and scattering

New Journal of Physics, 2020
A general framework for determining fundamental bounds in nanophotonics is introduced in this paper. The theory is based on convex optimization of dual problems constructed from operators generated by electromagnetic integral equations.
Mats Gustafsson, Kurt Schab, Lukas Jelinek, Miloslav Capek   +3 more
doaj   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

Design of One-Eighth Spherical Dielectric Resonator Antenna for 5G Applications

IEEE Access, 2020
A one-eighth spherical surface dielectric resonator antenna (OESS-DRA) is proposed first time. To analyze this thin shell structure, electromagnetic fields distribution is discussed by using the Hertz vector and boundary conditions.
Zhiwei Song, Hongxing Zheng, Mengjun Wang, Erping Li, Yongjian Li   +4 more
doaj   +1 more source

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

Advanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng, Xinxin Wang, Ruochao Zhao, Zhendong Li, Kai Liu, Ke Yuan, Jia An, Xinwei Li, Chee Kai Chua, Zhonggang Wang   +9 more
wiley   +1 more source

A novel thyristor‐based hybrid DC circuit breaker with short arcing capability

High Voltage
Multi‐terminal flexible high‐voltage direct current (HVDC) transmission and DC grid technology are developing rapidly. The hybrid DC circuit breaker (HCB) has broad application prospects in the field of HVDC transmission and DC power grid.
Guanlong Jia, Yuchen Yuan, Hongjiang Guo, Xiaoxue Wang, Feng Niu   +4 more
doaj   +1 more source

Hierarchical Markov model used in the reliability assessment and management of low-voltage switchgear

Advances in Mechanical Engineering, 2017
In this article, the reliability assessment and management of low-voltage switchgear was introduced based on a hierarchical Markov model. First, the reliability block diagram of motor control center was established by actual circuit.
Jingqin Wang, Li Wang, Ching-Hsin Wang, Zhigang Zhang   +3 more
doaj   +1 more source