Browsing Facultad de Matemática, Astronomía, Física y Computación by Title
Now showing items 868-887 of 1212
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New geometries for the characterization of dark matter phenomena
(2014)We present some new geometries with spheroidal symmetry, with and without mass, that involve new kind of energy momentum tensors, and which are suitable for the description of dark matter phenomena. -
NMR_CORE : un modelo de datos para representar experimentos de resonancia magnética nuclear de baja resolución
(2013-12-20)En respuesta a los requerimientos actuales de la industria de la resonancia magnética nuclear (RMN) de baja resolución, diseñamos un modelo de datos, al que llamamos NMR_CORE, que permite la representación de los experimentos ... -
Non-strongly isospectral spherical space forms
(2016)In this paper we describe recent results on explicit construction of lens spaces that are not strongly isospectral, yet they are isospectral on p-forms for every p. Such examples cannot be obtained by the Sunada method. ... -
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 ... -
Normal holonomy of orbits and Veronese submanifolds
(2015)It was conjectured, twenty years ago, the following result that would generalize the so-called rank rigidity theorem for homogeneous Euclidean submanifolds: let Mn, n ≥ 2, be a full and irreducible homogeneous submanifold ... -
Normalización de texto en español de Argentina
(2018)En la actualidad la cantidad de datos que consume y genera una sola persona es gigantesca. Los datos cada vez son más, ya que cualquiera puede generarlos. Esto trae consigo un aumento en el ruido que hay en esos datos. Es ... -
Nucleation and growth mechanisms in Cu-Co films
(2016)Nucleation and growth mechanisms in Co, Cu, and CoxCu100-x single films, and in CoxCu100-x/Cu bilayers, electrodeposited on Cu70Zn30 brass substrates, are studied by the constant potential technique. The recorded current-time ... -
El número de oro y sus representaciones
(2017-11-21)El presente informe describe la experiencia de práctica profesional docente realizada por dos estudiantes de la Facultad de Matemática, Astronomía, Física y Computación (FAMAF), UNC, en dos divisiones de quinto año de una ... -
Objetos activos : distribución espacial y propiedades de las galaxias circundantes
(2007-03)Se presenta un análisis detallado de la distribución espacial de galaxias y sus características en los entornos de objetos activos utilizando diferentes bases de datos y técnicas. -
Objetos extensos en el relevamiento vvv (vista variables in the Vía Lactea)
(2018-03)El relevamiento VISTA Variable in the Vía Láctea (VVV) es un relevamiento fotométrico profundo en infrarrojo cercano que nos permite buscar fuentes extragalácticas que están oscurecidas por la presencia de nuestra Galaxia. ... -
Observación y análisis de sistemas astrofísicos usando fenómenos de lentes gravitacionales
(2017-03)Presentamos el desarrollo de un código destinado al análisis de imágenes fotométricas para la determinación de masas de sistemas de galaxias, mediante el fenómeno de lente débil. Luego de ser testeado en una serie de ... -
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 ... -
OFFBEAT : una extensión de PRISM para el análisis de sistemas temporizados tolerantes a fallas
(2011-03-28)Los sistemas tolerantes a fallas son aquellos que son capaces de seguir operando luego de la ocurrencia de una o más fallas. Una falla puede provocar cambios no deseados en el estado interno del sistema, y para que el ... -
Omnetpy: integración del lenguaje Python en el entorno de simulación OMNeT++
(2022-03)En este trabajo elaboramos un paquete que permite el desarrollo de módulos Python para la herramienta de simulación de redes OMNeT++. También analizamos el estado del arte en el uso de Python para la simulación de redes. ... -
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 Dirichlet problems with singular nonlinearity of indefinite sign
(2015)Let Ω be a smooth bounded domain in RN , N ≥ 1, let K, M be two nonnegative functions and let α, γ > 0. We study existence and nonexistence of positive solutions for singular problems of the form −Δu = K(x)u−α − λM (x)u−γ ... -
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 structural completeness versus almost structural completeness problem : a discriminator varieties case study
(2015)We study the following problem: determine which almost structurally complete quasivarieties are structurally complete. We propose a general solution to this problem and then a solution in the semisimple case. As a consequence, ...
