Browsing Artículos 2014 by Title
Now showing items 66-85 of 106
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Multiterminal conductance of a floquet topological insulator
(2014)We report on simulations of the dc conductance and quantum Hall response of a Floquet topological insulator using Floquet scattering theory. Our results reveal that laser-induced edge states lead to quantum Hall plateaus ... -
Neo y paleoornitología virtual
(2014)La visualización y análisis de los fósiles asistido por computadoras ha revolucionado el estudio de los organismos extintos. Técnicas novedosas permiten caracterizar los restos en tres dimensiones y acceder a detalles sin ... -
Nonmodal linear stability of the Schwarzschild black hole
(2014)A proof is given that the space L of solutions of the linearized vacuum Einstein equation around a Schwarzschild black hole is parametrized by two scalar fields, which are gauge invariant combinations of perturbed algebraic ... -
Obstacles modelling reality: two exploratory studies on physics defined and undefined problems
(2014)One important skill to be developed in future physicists is modelling reality using physics. Problem-solving is the activity most used to teach, learn and assess physics skills at the university level. However, most of the ... -
On a mathematical theory of complex systems on networs with application to opinion formation
(2014)This paper presents a development of the so-called kinetic theory for active particles to the modeling of living, hence complex, systems localized in networks. The overall system is viewed as a network of interacting nodes, ... -
On homogeneous Ricci solitons
(2014)We study the evolution of homogeneous Ricci solitons under the bracket flow, a dynamical system on the space Hq,n ⊂ Λ2g∗ ⊗ g of all homogeneous spaces of dimension n with a q-dimensional isotropy, which is equivalent to ... -
On nonsingular two-step nilpotent Lie algebras
(2014)A 2-step nilpotent Lie algebra n is called non-singular if ad X : n → [n, n] is onto for any X /∈ [n, n]. We explore non-singular algebras in several directions, including the classification problem (isomorphism invariants), ... -
On stochastic spatial patterns and neuronal polarity
(2014)Polarization refers to asymmetric changes in cellular organization that occur in response to external or internal signals. Although neurons can spontaneously establish and maintain asymmetric distributions of signalling ... -
On the evolution of the momentarily static radiation free data in the Apostolatos - Thorne cylindrical shell model
(2014-02-24)In this paper we study the evolution of the 'Momentarily Static and Radiation Free' (MSRF) initial data for the Apostolatos–Thorne cylindrical shell model. After briefly reviewing the equations of motion, the definition ... -
On the linear stability of the extreme Kerr black hole under axially symmetric perturbations
(2014)We prove that for axially symmetric linear gravitational perturbations of the extreme Kerr black hole, there exists a positive definite and conserved energy. This provides a basic criteria for linear stability in axial ... -
On the nature of defects in liquid-phase exfoliated graphene
(2014)Liquid-phase exfoliation is one of the most promising routes for large-scale production of multilayer graphene dispersions. These dispersions, which may be used in coatings, composites, or paints, are believed to contain ... -
On the theorem of the primitive element with applications to the representation theory of associative and Lie algebras
(2014)We describe all finite dimensional uniserial representations of a commutative associative (resp. abelian Lie) algebra over a perfect (resp. sufficiently large perfect) field. In the Lie case the size of the field depends ... -
A pair production telescope for medium-energy gamma-ray polarimetry
(2014)We describe the science motivation and development of a pair production telescope for medium-energy (∼5–200 MeV) gamma-ray polarimetry. Our instrument concept, the Advanced Energetic Pair Telescope (AdEPT), takes advantage ... -
Pensar y calcular
(2014)Pensamos. Y pensamos que pensar es una de las características distintivas de los bípedos implumes, distinción que ha provocado un salto evolutivo incalculable. A veces tratamos de calcular distintas cosas, por ejemplo ... -
A performance evaluation of oscillation based test in continuous time filters
(2014)This work evaluates the ability of OBT for detecting parametric faults in continuous-time filters. To this end, we adopt two filters with quite different topologies as cases of study and a previously reported statistical ... -
Permutation entropy applied to the characterization of the clinical evolution of epileptic patients under pharmacological treatment
(2014)Different techniques originated in information theory and tools from nonlinear systems theory have been applied to the analysis of electro-physiological time series. Several clinically relevant results have emerged from ... -
A posteriori error estimates for elliptic problems with Dirac measure terms in weighted spaces
(2014)In this article we develop a posteriori error estimates for second order linear elliptic problems with point sources in two- and three-dimensional domains. We prove a global upper bound and a local lower bound for the error ... -
Las potencialidades de la narrativa en la formación de profesores
(2014)Este artículo tiene como objetivo argumentar en relación con la potencialidad de los textos narrativos para la formación de profesores. Para sustentar nuestra argumentación tomaremos aportes teóricos de diversos autores ... -
Resonance states in a cylindrical quantum dot with an external magnetic field
(2014)Bound and resonance states of quantum dots play a significant role in photo-absorption processes. In this work, we analyze a cylindrical quantum dot, its spectrum and, in particular, the behaviour of the lowest resonance ... -
Search for gravitational radiation from intermediate mass black hole binaries in data from the second LIGO-Virgo joint science run
(2014)This paper reports on an unmodeled, all-sky search for gravitational waves from merging intermediate mass black hole binaries (IMBHB). The search was performed on data from the second joint science run of the LIGO and Virgo ...
