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JEMAA is a professional journal in the field of electromagnetic analysis, testing and application. The goal of this journal is to provide an international platform for engineers and academicians all over the world to promote, share, and discuss various new issues and developments in the field of electromagnetics. It i…
Volodymyr Grimalsky, Svetlana Koshevaya, Jesus Escobedo-Alatorre, Igor Moroz
Electron spectrum in doped n -Si quantum wires is calculated by the Thomas-Fermi (TF) method under finite temperatures. The many-body exchange corrections are taken into account. The doping profile is arbitrary. At the first stage, the electron potential ener…
Ignacio Campos-Flores, José-Luis Jiménez-Ramírez, José-Antonio-Eduardo Roa-Neri
We address the problem of the force exerted on a dielectric slab partially introduced into a charged parallel plate capacitor. This elementary problem is usually solved calculating this force as the gradient of an energy and attributing its origin to the acti…
Dalia N. Elsheakh, Esmat A. Abdallah
This paper proposes a printed log-periodic dipole antenna (LPDA) for ultra wide bandwidth (UWB) applications. The antenna comprises of cascading four U shaped elements of different line lengths with balun circuit to improve the antenna impedance matching. The…
Bo Lehnert
A revised quantum electrodynamic theory by the author is reconsidered, in respect to the basic concepts established by M. Planck and H.B.G. Casimir on the Zero Point Energy (ZPE) and by A. Einstein on Special Relativity. Attention is given to the new properti…
H. Nagarathnamma, A. Pavithra, C. E. Nanjundappa, S. P. Suma
Penetrative Bénard-Maranagoni convection in micropolar ferromagnetic fluid layer in the presence of a uniform vertical magnetic field has been investigated via internal heating model. The lower boundary is considered to be rigid at constant temperature, while…
Vernon Cooray, Gerald Cooray
In a recent paper, we have studied the nature of the electromagnetic energy radiated over a single period of oscillation by an antenna working in frequency domain under ideal conditions and without losses when the oscillating charge in the antenna is reduced…
Bo Chen, Sai Wu, Rui Wang, Changlei Liu, Jindong Lu, Kui Deng, Liang Ge
With the continuous development of industrial technology, the weak current plays an increasingly important role in all fields of life. In order to facilitate the user to carry, the study of contactless weak current measurement technology is also emerging. Thi…
Kago Ernest Maabong, Kgakgamatso Mphale, Douglas Letsholathebe, Samuel Chimidza
A significant number of fire-induced power disruptions are observed in several countries every year. The faults are normally phase-to-phase short circuiting or conductor-to-ground discharges at mid-span region of the high-voltage transmission system. In any c…
Claude Bédard, Alain Destexhe
The macroscopic electric permittivity of a given medium may depend on frequency, but this frequency dependence cannot be arbitrary, its real and imaginary parts are related by the well-known Kramers-Kronig relations. Here, we show that an analogous paradigm a…
Nicolay N. Grinchik, Vladimir G. Andrejev, Galina M. Zayats, Yury N. Grinchik
A coordinated physicomathematical model for the propagation of a soliton-like electromagnetic pulse in a heterogeneous medium is developed in the presence of strong discontinuities in the electromagnetic field. The model is based on the reduction of Maxwell’s…
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JEMAA is a professional journal in the field of electromagnetic analysis, testing and application. The goal of this journal is to provide an international platform for engineers and academicians all over the world to promote, share, and discuss various new issues and developments in the field of electromagnetics. It i… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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