Results 11 to 20 of about 34,159,491 (103)
Signal Space Separation Method for a Biomagnetic Sensor Array Arranged on a Flat Plane for Magnetocardiographic Applications: A Computer Simulation Study. [PDF]
J Healthc Eng, 2018 Although the signal space separation (SSS) method can successfully suppress interference/artifacts overlapped onto magnetoencephalography (MEG) signals, the method is considered inapplicable to data from nonhelmet‐type sensor arrays, such as the flat sensor arrays typically used in magnetocardiographic (MCG) applications.
Sekihara K.
europepmc +2 more sources
Communications on Pure and Applied Mathematics, Volume 76, Issue 12, Page 3685-3768, December 2023., 2023 Abstract We investigate the long‐time properties of the two‐dimensional inviscid Boussinesq equations near a stably stratified Couette flow, for an initial Gevrey perturbation of size ε. Under the classical Miles‐Howard stability condition on the Richardson number, we prove that the system experiences a shear‐buoyancy instability: the density variation
Jacob Bedrossian +3 more
wiley +1 more source
Electrodynamics and rational thermodynamics
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 103, Issue 4, April 2023., 2023 The electromagnetic fields (D, H) represent contravariant components of an antisymmetric 4‐tensor, while the fields (E, B) represent covariant components of the same 4‐tensor. Both sets are identical in Lorentz frames. The governing equations for them represent equations of balance for the flux of D and the flux B across open surfaces and they are ...
Ingo Müller, Wolfgang H. Müller
wiley +1 more source
Structural Control and Health Monitoring, Volume 2023, Issue 1, 2023., 2023 In this paper, we describe the design and manufacturing of a viscous inertial mass‐damper (VIMD) prototype. The damper parameters, the inertial mass, and the viscous damping coefficient can be continuously adjusted. Experimental validations were carried out on the VIMD with various parameters and a scaled sagged cable of 19.47 m long with the VIMD for ...
Shenghao Dong +4 more
wiley +1 more source
Space Weather, Volume 20, Issue 5, May 2022., 2022 Abstract A study is made of the relations between geomagnetic and geoelectric field variation, Earth‐surface impedance, and operational interference (“anomalies”) experienced on electric‐power systems across the contiguous United States during the 13–14 March, 1989, magnetic storm.
Jeffrey J. Love +5 more
wiley +1 more source
Earth and Space Science, Volume 8, Issue 8, August 2021., 2021 Abstract An analysis is made of Earth‐surface geoelectric fields and voltages on electricity transmission power‐grids induced by a late‐phase E3 nuclear electromagnetic pulse (EMP). A hypothetical scenario is considered of an explosion of several hundred kilotons set several hundred kilometers above the eastern‐midcontinental United States.
Jeffrey J. Love +5 more
wiley +1 more source
Space Weather, Volume 18, Issue 3, March 2020., 2020 Abstract The intensification of the fluctuating geomagnetic field during space weather events leads to generation of a strong electric field in the conducting earth, which drives geomagnetically induced currents (GICs) in grounded technological systems. GICs can severely affect the functioning of such infrastructure.
Elena Marshalko +6 more
wiley +1 more source
Video lectures - lecture 14 - Biot-Savart law
, 2011 Educação Superior::Ciências Exatas e da Terra::FísicaThis video presents a lecture about Biot-Savart Law, Gauss' Law for Magnetic Fields, Leyden Jar and High-Voltage Power LinesConcepts of Magnetic Fields and ...
Lewin, Walter
core +2 more sources
Video lectures - lecture 14 - Biot-Savart law
, 2016 Educação Superior::Ciências Exatas e da Terra::FísicaThis video presents a lecture about Biot-Savart Law, Gauss' Law for Magnetic Fields, Leyden Jar and High-Voltage Power LinesConcepts of Magnetic Fields and ...
Lewin, Walter
core +2 more sources
∇ ⋅ B, Outer Boundary, and Biot–Savart in Magnetosphere MHD Simulations
Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.Abstract We examine the size of ∇⋅B $\nabla \cdot \mathbf{B}$ and outer surface boundary integrals in estimating the surface magnetic field from magnetohydrodynamic (MHD) simulations. Maxwell's equations tell us ∇⋅B=0 $\nabla \cdot \mathbf{B}=0$, which may be violated due to numerical error. MHD models such as the Space Weather Modeling Framework (SWMF)
Dean Thomas +4 more
wiley +1 more source