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Simpson, Jamesina J. | Efficient modeling of impulsive ELF antipodal propagation about the earth sphere using an optimized two-dimensional geodesic FDTD grid | This letter reports the initial application of a geodesic finite-difference time-domain (FDTD) grid to model impulsive extremely low frequency electromagnetic wave propagation about the Earth sphere. The two-dimensional transverse-magnetic grid is comprised entirely of hexagonal cells, except for a ... | 2004-01-01 | |
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Ziegenfuss, Donna | A Busy Professor's Guide to Sanely Flipping Your Classroom | The Flipped Classroom has become a popular teaching method. Students watch video lectures before class, saving class time for active learning (problem solving, demonstrations, applications, etc.). This paper is a useful guide for busy professors who would like to try out the flipped classroom approa... | flipped classroom; inverted classroom; engineering education; teaching electromagnetics; assessment pedagogy | 2019 |
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Simpson, Jamesina J. | A review of progress in FDTD Maxwell's equations modeling of impulsive subionospheric propagation below 300 kHz | Wave propagation at the bottom of the electromagnetic spectrum (below300 kHz) in the Earth-ionosphere waveguide system has been an interesting and important area of investigation for the last four decades. Such wave propagation is characterized by complex phenomena involving nonhomogeneous and aniso... | 2007-01-01 |