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Mostrando ítems 11-20 de 199
Gravitational waves during inflation from a 5D large-scale repulsive gravity model
(2012)
We investigate, in the transverse traceless (TT) gauge, the generation of the relic background of gravitational waves, generated during the early inflationary stage, on the framework of a large-scale repulsive gravity ...
Scalar fluctuations of the scalar metric during inflation from a non-perturbative 5D large-scale repulsive gravity model
(2013)
We develop a non-perturbative formalism for scalar metric fluctuations from a 5D extended version of general relativity in vacuum. In this work we concentrate our efforts on calculations valid on large cosmological scales, ...
A study of tachyon dynamics for broad classes of potentials
(2010)
We investigate in detail the asymptotic properties of tachyon cosmology for a broad class of self-interaction potentials. The present approach relies on an appropriate re-definition of the tachyon field, which, in conjunction ...
Descubriendo el enfoque formativo de la evaluación en un Curso de Matemáticas para estudiantes de Bioingeniería
(Universidad Politecnica de Valencia, 2017-06)
Este trabajo describe cómo la evaluación formativa fue introducida en un curso de matemáticas para futuros bioingenieros. Este cambio se desarrolló en el contexto de una indagación enmarcada en los principios metodológicos ...
Efficient in vitro propagation of Agave parrasana Berger
(1999)
An efficient method for the in vitro propagation of Agave parrasana Berger, an important ornamental plant species native to the state of Coahuila, Mexico, was developed. Proliferation of good quality shoots was achieved ...
A system for the study of the photoacoustic phenomena in alloy samples of Fe 2Mo
(2011)
In this work, we present the design of a photoacoustic system to study the photoacoustic phenomena that can be used for the experimental determination of the thermal diffusivity of solids. The photoacoustic system with an ...
Recursos educativos digitales mediados por la gamificaci?n para mejorar el aprendizaje de las matem?ticas en estudiantes de primaria del Centro Educativo Gimnasio Pedag?gico Marianito - Boyac?, ColombiaDigital educational resources mediated by gamification to improve the learning of mathematics in primary students of the Educational Center Gimnasio Pedagogico Marianito - Boyac?, Colombia
(Universidad Metropolitana de Educaci?n, Ciencia y Tecnolog?a, 2023)
Avances de investigaci?n en educaci?n y sociedad
(Sello Editorial Universidad del TolimaIbagu? - Tolima ? Colombia, 2023)
Media aritm?tica : dificultades en alumnos del grado d?cimo
(Ibague : Universidad del Tolima, 2011., 2014)
Comment on "extended Born-Infeld theory and the bouncing magnetic universe"
(2014)
In a recent paper [Phys. Rev. D 85, 023528 (2012)PRVDAQ1550-799810.1103/PhysRevD.85.023528] the authors proposed a generalized Born-Infeld electrodynamics coupled to general relativity which produces a nonsingular bouncing ...