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Outer Factor 2-D MA Models for Purely Random Fields and Fields and Wold-Tipe Texture Decompositions
(2007-06-29)
In this paper, we propose a new method to compute the parameters of finite approximations of 2-D MA infinite models associated with purely indeterministic stationary fields, by using spectral factorizations. This method ...
Large-scale model of the axisymmetric dynamo with feedback effects
(Springer, 2019-01-29)
A dynamo model is presented, based on a previously introduced kinematic model, in which the effect of the magnetic field on the mass flow through the Lorentz force is included. Given the base mass flow corresponding to the ...
Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements
(Springer Heidelberg, 2020-07)
Currently, simulations of the induced currents in the brain produced by transcranial magnetic stimulation (TMS) are used to elucidate the regions reached by stimuli. However, models commonly found in the literature are too ...
Fermion helicity flip and fermion oscillation induced by dynamical torsion field
(IOP Publishing, 2019-07)
We show that in theories of gravitation based in affine geometries the torsion field, that takes a dynamical character, produces the non-conservation of the helicity of fermion particles (spin precession). Such effect is ...
Charged pion masses under strong magnetic fields in the NJL model
(Elsevier Science, 2018-07)
The behavior of charged pion masses in the presence of a static uniform magnetic field is studied in the framework of the two-flavor NJL model, using a magnetic field-independent regularization scheme. Analytical calculations ...
Equatorial zonal electric fields inferred from a 3‐D electrostatic potential model and ground‐based magnetic field measurements
(American Geophysical Union, 2009-06-06)
We present a new technique to infer quiet time zonal electric fields in the daytime equatorial ionosphere. The electric field inference technique utilizes a three‐dimensional (3‐D) electrostatic potential model of the ...
Definable groups in DCFA
(Centro de Investigaciones en Matemática Pura y Aplicada (CIMPA) y Escuela de Matemática, San José, Costa Rica., 2019)
Differentially closed fields of characteristic zero with a generic automorphismDifferentially closed fields of characteristic zero with a generic automorphism
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2007)
Room acoustics: Idealized field and real field considerations
(Acoustical Society of America, 2018-05)
How is an acoustically diffuse field defined? To what extent are the equations of diffuse field theory valid? These are the questions addressed in this presentation. The answers are explained through more general theories, ...
A probabilistic approach to radiant field modeling in dense particulate systems
(Pergamon-Elsevier Science Ltd, 2016-03)
Radiant field distribution is an important modeling issue in many systems of practical interest, such as photo-bioreactors for algae growth and heterogeneous photo-catalytic reactors for water detoxification.In this work, ...