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Modelagem de distorções entre realizações de referenciais geodésicos
(Universidade Estadual Paulista (Unesp), 2007-04-24)
Os avanços tecnológicos nos métodos de posicionamento, sobretudo os sistemas de posicionamento por satélite, fizeram com que diversos países atualizassem e/ou revisassem suas estruturas geodésicas fundamentais. Na busca ...
Evidence of two-channel distortion effects in positronium formation reactions
(IOP Publishing, 2004-12)
The formation of ground-state positronium in collisions of positrons on
hydrogen-like atoms is considered. In previous theoretical works, two-centre
distorted wavefunctions were employed to approximate either the initial ...
Volterra Models for Digital PWM and Their Inverses
(Institute Of Electrical And Electronics Engineers, 2015-10)
In an all-digital class-D audio amplifier each signal sample is mapped into a pulse using digital pulse-width-modulation (PWM), and this intrinsically generates nonlinear distortion. This article develops discrete-time ...
Off-shell distortions of multichannel atomic processes
(Elsevier, 2017-02)
Any multichannel problem can be reduced to a succession of two-body events. However, these basic building blocks of many-body theories do not correspond to elastic processes but are off-the-energy-shell. In view of this ...
Fontes de distorções da rede geodésica Brasileira
(2008-04-01)
The Brazilian Geodetic Network started to be established in the early 40's, employing classical surveying methods, such as triangulation and trilateration. With the introduction of satellite positioning systems, such as ...
Fontes de distorções da rede geodésica Brasileira
(2008-04-01)
The Brazilian Geodetic Network started to be established in the early 40's, employing classical surveying methods, such as triangulation and trilateration. With the introduction of satellite positioning systems, such as ...
Harmonics filtering and detection of disturbances using wavelets
(1999-12-01)
Traditional mathematical tools, like Fourier Analysis, have proven to be efficient when analyzing steady-state distortions; however, the growing utilization of electronically controlled loads and the generation of a new ...
Conservative Power Theory for Harmonic Voltage Responsibility Assignment
(2022-03-01)
Discussions on the different methods for sharing responsibilities regarding harmonic distortions in power grids have received wide attention in the area of power quality. This paper proposes a methodology based on Conservative ...
Weak ferromagnetism above T-N in Gd2CuO4
(Elsevier Science BvAmsterdamHolanda, 2001)