Results 41 to 50 of about 15,934 (228)

Elliptical Ring Antenna Excited by Circular Disc Monopole for UWB Communications

open access: yesInternational Journal of Antennas and Propagation, 2020
This research proposes a compact elliptical ring antenna excited by a circular disc monopole (CDM) for ultra-wideband (UWB) communications. In the study, time- and frequency-domain pulse distortions of the antenna in the transmission mode were ...
Krittaya Nakprasit   +2 more
doaj   +1 more source

Collisionless reconnection using Alfvén wave radiation resistance [PDF]

open access: yes, 1998
Patchy magnetic reconnection involves transient field-aligned current filaments. The spatial localization, transient time-dependence, and orientation of these current filaments means they must radiate torsional Alfvén waves. Radiation of wave energy does
Bellan, P. M.
core   +1 more source

Quantum electrodynamics in modern optics and photonics: tutorial [PDF]

open access: yes, 2020
One of the key frameworks for developing the theory of light–matter interactions in modern optics and photonics is quantum electrodynamics (QED). Contrasting with semiclassical theory, which depicts electromagnetic radiation as a classical wave, QED ...
Acosta   +192 more
core   +1 more source

Modelling of Data Communication over Medium-Voltage Power Distribution Lines

open access: yesCommunications, 2016
The paper is dedicated to different topologies of medium-voltage power distribution lines with respect to their properties influencing the transmission of communication signals.
Jaromir Hrad, Jiri Vodrazka
doaj   +1 more source

Quintessential Affleck-Dine baryogenesis with non-minimal couplings

open access: yes, 2018
We present a novel Affleck-Dine scenario for the generation of the observed baryon asymmetry of the Universe based on the non-trivial interplay between quintessential inflationary models containing a kinetic dominated post-inflationary era and a non ...
Bettoni, Dario, Rubio, Javier
core   +1 more source

THE EFFECT OF PROFITABILITY AND COMPANY AGE ON HUMAN RESOURCE ACCOUNTING DISCLOSURE IN IDX-LISTED BANKING COMPANIES

open access: yesSAR (Soedirman Accounting Review): Journal of Accounting and Business
This study aims to examine the effect of profitability and firm age on human resource accounting disclosure (HRAD) in banking companies listed on the Indonesia Stock Exchange (IDX) during the period 2022–2024. This study uses a quantitative approach with
Destriyana Luthfiyanti   +1 more
doaj   +1 more source

Complementarity Endures: No Firewall for an Infalling Observer

open access: yes, 2012
We argue that the complementarity picture, as interpreted as a reference frame change represented in quantum gravitational Hilbert space, does not suffer from the "firewall paradox" recently discussed by Almheiri, Marolf, Polchinski, and Sully. A quantum
A Almheiri   +17 more
core   +1 more source

New criteria for self-adjointness and its application to Dirac-Maxwell Hamiltonian [PDF]

open access: yes, 2013
We present a new theorem concerning a sufficient condition for a symmetric operator acting in a complex Hilbert space to be essentially self-adjoint. By applying the theorem, we prove that the Dirac Maxwell Hamiltonian, which describes a quantum system ...
Futakuchi, Shinichiro, Usui, Kouta
core   +1 more source

The Dirac point electron in zero-gravity Kerr--Newman spacetime [PDF]

open access: yes, 2015
Dirac's wave equation for a point electron in the topologically nontrivial maximal analytically extended electromagnetic Kerr--Newman spacetime is studied in a zero-gravity limit; here, "zero-gravity" means $G\to 0$, where $G$ is Newton's constant of ...
Kiessling, M. K. -H.   +1 more
core   +1 more source

Nonlinear charge transport mechanism in periodic and disordered DNA [PDF]

open access: yes, 2003
We study a model for polaron-like charge transport mechanism along DNA molecules with emphasis on the impact of parametrical and structural disorder. Our model Hamiltonian takes into account the coupling of the charge carrier to two different kind of ...
Agarwal, J.   +2 more
core   +2 more sources

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