Results 21 to 30 of about 68 (66)
Space Weather, Volume 23, Issue 11, November 2025.Abstract Geomagnetic storms can induce geomagnetically induced currents (GIC) in power systems, posing threats to grid security. In this study, a GIC calculation model for the 500 kV power grid in Guangxi, China, is developed based on one‐dimensional (1D) and various three‐dimensional (3D) magnetotelluric (MT) impedance data.
Xuejian Zhang +7 more
wiley +1 more source
Plasmonic near‐field scanning nanoscope with a cross‐polarization detection technique
Nanophotonics, Volume 8, Issue 10, Page 1731-1738, June 2018., 2018 Abstract A cross‐polarization detection technique was introduced to enhance the signal‐to‐noise ratio (SNR) of a plasmonic near‐field scanning nanoscope (PNSN) using the anisotropic reflection from a metallic ridge nano‐aperture. Assuming that the nano‐aperture is an resistor‐inductor‐capacitor‐equivalent circuit, we propose an analytic circuit model ...
Hyeon Bo Shim, Jae W. Hahn
wiley +1 more source
Analytical modelling of sound transmission in a lined duct [PDF]
, 2013 The focus of this thesis is on the prediction of sound attenuation through a lined duct, based on a mathematical model. Ducts with a single section as well as multi-segmented sections are discussed. The duct of interest has a rectangular cross-section as
Ramli, Nabilah binti
core
A Finite Element Method for a Nonlinear Magnetostatic Problem in Terms of Scalar Potentials
Numerical Methods for Partial Differential Equations, Volume 41, Issue 2, March 2025.ABSTRACT The aim of this paper is to perform the analysis of a numerical method based on scalar potentials for solving a nonlinear magnetostatic problem in a three‐dimensional bounded domain containing prescribed currents and magnetic materials. The method discretizes a well‐known formulation of this problem based on two scalar potentials: the total ...
Rafael Muñoz‐Sola, Pilar Salgado
wiley +1 more source
Principles and techniques of the quantum diamond microscope
Nanophotonics, Volume 8, Issue 11, Page 1945-1973, June 2018., 2018 Abstract We provide an overview of the experimental techniques, measurement modalities, and diverse applications of the quantum diamond microscope (QDM). The QDM employs a dense layer of fluorescent nitrogen‐vacancy (NV) color centers near the surface of a transparent diamond chip on which a sample of interest is placed.
Edlyn V. Levine +8 more
wiley +1 more source
Experimental and theoretical models of cultural evolution [PDF]
, 2014 This thesis contributes to the field of cultural evolution by presenting two experimental and two theoretical models of cultural evolution. Prior to presenting these I survey existing experimental and theoretical models of cultural evolution.
KEMPE, MARIUS
core
Isolation Transformer Based Very Low Frequency Antenna with Enhanced Radiation Characteristics
Advanced Science, Volume 12, Issue 3, January 20, 2025.Report a very low frequency antenna with enhanced radiation characteristics, which employs a high‐power‐density, low‐loss amorphous/nanocrystalline alloy Fe73.5Cu1Nb3B9Si13.5 to fabricate the impedance matching structure, enabling long‐distance low‐frequency communication.
Jingqi Wu +4 more
wiley +1 more source
Modeling Toroidal Currents in the Ionospheric Electrojet Regions
Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.Abstract New basis functions, suitable for fitting magnetic field observations of the auroral and equatorial electrojets, are constructed by applying principal components analysis (PCA) to a set of rotated current loops in the ionospheric E‐layer.
P. Alken, G. D. Egbert
wiley +1 more source
High Voltage, Volume 9, Issue 4, Page 826-838, August 2024.Abstract Accurate calculation of short‐circuit electromagnetic force is crucial for both mechanical strength check and the optimal design of gas‐insulated transmission lines (GIL). Since the full 3D numerical simulation method is highly time‐consuming, a novel lightweight 2D multi‐slice electromagnetic field‐circuit coupled method for computing ...
Shucan Cheng +3 more
wiley +1 more source
Space Weather, Volume 22, Issue 4, April 2024.Abstract We introduce a new framework called Machine Learning (ML) based Auroral Ionospheric electrodynamics Model (ML‐AIM). ML‐AIM solves a current continuity equation by utilizing the ML model of Field Aligned Currents of Kunduri et al. (2020, https://doi.org/10.1029/2020JA027908), the FAC‐derived auroral conductance model of Robinson et al.
V. Sai Gowtam +10 more
wiley +1 more source