T he technology for generating and detecting electromagnetic waves has evolved significantly over the last 120 years. In the early 1890s, Guglielmo Marconi used a spark-gap transmitter to build a wireless telegraphy system. In his design, he charged a capacitor to a high dc voltage and connected it to a parallel combination of an inductor, a second capacitor, and an antenna through an air gap. ...

The Hankel transform is widely used to solve various engineering and physics problems, such as the representation of electromagnetic field components in medium, dynamic stress intensity factors, vibration axisymmetric infinite membrane displacement factors which all involve this type integration. However, traditional numerical integration algorithms cannot be due high oscillation characteristic...

In the case of a high penetration rate wind energy conversion systems, conventional virtual inertia control permanent magnet synchronous generators (PMSG) has an insufficient support capability for system frequency, leading to unstable frequency and slower response. Considering finite set model predictive multi-objective regulation capabilities efficient tracking capabilities, improved model-pr...

The recent few years have witnessed a strong interest in the area of associative memories. These are memories in which a stored piece of information can be retrieved whole when the probing input is only partially complete. The memory somehow finds that stored message, among many, which most closely resembles the input and puts it out. There has been an increasing sense of awareness among worker...

In this paper, a theoretical study is conducted in order to establish the feasibility of a liquid metal acoustic resonator ͑liquid gallium or liquid aluminum͒ for high-amplitude acoustic oscillations. The fundamental resonant frequency typically lies between 5 and 40 kHz. The oscillations are induced by an alternating Lorentz force density applied directly to the liquid metal volume. Depending on...

It is shown how misleading is the Einstein propagating photon, which prevented the discovery of the matter-antimatter vibration. The gravitation electricity symmetry is patent in the holographic two-step interaction scheme, illustrating Cosmical Immergence. This leads to a logical interpretation of the incredible non-Doppler oscillations, observed by Kotov in several quasars, which confirms Coh...

We study quasinormal modes related to gravitational and electromagnetic perturbations of spherically symmetric charged black holes in nonlinear electrodynamics. Beyond the linear Maxwell electrodynamics, we consider a class Lagrangian with higher-order corrections written by field strength its Hodge dual arbitrary coefficients, parametrize for frequencies terms coefficients. It is confirmed tha...