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Now showing items 11-20 of 684
La ética del periodista en la infoesfera digital [Article]
(Universidad de Lima, 2013)
En este artículo se plantean los nuevos retos a los que se enfrenta la actividad informativa en la era de internet, caracterizada por la horizontalidad y transversalidad de los modelos comunicativos entre medios y ciudadanos. ...
Absence of splash singularities for surface quasi-geostrophic sharp fronts and the Muskat problem [Article]
(National Academy of Sciences (United States), 2014)
In this paper, for both the sharp front surface quasi-geostrophic equation and the Muskat problem, we rule out the “splash singularity” blow-up scenario; in other words, we prove that the contours evolving from either of ...
Evaluación de la actividad y expresión génica de enzimas antioxidantes en ratas tras exposición al extracto de migración de un material nanocompuesto [Article]
(Asociación Española de Toxicología (AETOX), 2013)
Nonlinear localized modes in two-dimensional electrical lattices [Article]
(2013)
We report the observation of spontaneous localization of energy in two spatial dimensions in the context of nonlinear electrical lattices. Both stationary and moving self-localized modes were generated experimentally and ...
Vibrational mechanics in an optical lattice: controlling transport via potential renormalization [Article]
(American Physical Society, 2012)
We demonstrate theoretically and experimentally the phenomenon of vibrational resonance in a periodic potential, using cold atoms in an optical lattice as a model system. A high-frequency (HF) drive, with a frequency ...
Current reversals in a rocking ratchet: the frequency domain [Article]
(American Physical Society, 2011)
Motivated by recent work [D. Cubero et al., Phys. Rev. E 82, 041116 (2010)], we examine the mechanisms which determine current reversals in rocking ratchets as observed when varying the frequency of the drive. We found ...
Current reversals in a rocking ratchet: dynamical versus symmetry-breaking mechanisms [Article]
(American Physical Society, 2010)
Directed transport in ratchets is determined by symmetry breaking in a system out of equilibrium. A hallmark of rocking ratchets is current reversals: an increase in the rocking force changes the direction of the current. ...
La educación científica en el currículo oficial de Primaria para Andalucía: Un análisis crítico [Article]
(Diada, 2015)
Se presentan los resultados de un análisis crítico, de corte interpretativo, sobre la educación científica que se promueve desde el curriculum oficial de Primaria para Andalucía. Para ello, se aplicó un protocolo de ...
La Comisión de Deontología como referente de la autorregulación del periodismo: apuntes doctrinales sobre el periodismo digital [Article]
(Universidad de Navarra: Facultad de Comunicación, 2015)
En este artículo se presentan los resultados de un estudio sobre la Comisión de Deontología del Periodismo de la FAPE, como instancia de la autorregulación del periodismo en España. El propósito del presente trabajo se ...
Comparison of the water potential baseline in different locations. Usefulness for irrigation scheduling of olive orchards [Article]
(Elsevier, 2016)
Deficit irrigation scheduling needs accurate indicators and in recent decades, continuous plant indicators have been developed. However, threshold values that could be useful in commercial orchards are not commonly reported. ...