Search results for "RAV"
showing 10 items of 5866 documents
Estudio del espesor óptico de nubes a partir de radiación solar
2015
El objetivo general de este trabajo es el cálculo del espesor óptico de nubes para nubes bajas y medias formadas por gotas de agua en la ciudad de Burjassot (Valencia), mediante un método de minimización. Los espesores han sido obtenidos tanto para cielos cubiertos como para cielos parcialmente nubosos con el Sol oculto por las nubes, a partir de medidas de irradiancia eritemática (UVER) e irradiancia solar total a nivel de suelo. Para ello se han utilizado dos modelos de transferencia radiativa que presuponen capas de nubes homogéneas plano-paralelas. También se han obtenido diferentes relaciones empíricas entre el espesor óptico de nubes obtenido y diferentes factores de transmisividad at…
Effect of air-absorbed oxygen and moisture on the chemical stability of photoexcitedMg,ZnandEuphthalocyanines in dimethylformamide
2006
Absorption of oxygen and moisture from air by MPc-DMF systems was studied and related to the molecular stability demonstrated by phthalocyanine complexes (unsubstituted MPc's : MgPc , ZnPc and EuPc2; Pc = phthalocyanine ligand, C32H16N8) subjected to UV irradiation. A lower stability of air-exposed dimethylformamide solutions is observed and is due to a specific affinity for molecular oxygen revealed by the Pc macrocycle. SEM results proved oxygen molecules fixed to the phthalocyanine solids by forces strong enough to sustain desorption under vacuum. Absorption curves determined for MPc-DMF systems also indicate oxygen accommodated by the phthalocyanine moiety. This explains the predominant…
Analyzing online search patterns of music festival tourists
2020
Music festivals, as cultural events that induce tourism flows, intermediate both the cultural and travel experience. The present study analyzes online search behavior of potential attenders to a music festival. We hypothesize that the search process reveals latent patterns of behavior of cultural tourists planning to attend music festivals. To this end, information from Google Trends on queries related to three popular music festivals is used to build a network of search topics. Based on it, alternative exponential random graph model specifications are estimated. Findings support the general result of mediated information flows: music festivals induce planning and traveling queries. Howeve…
Educación artística : revista de investigación
2014
En este articulo mostramos como aprender, ensenar y comunicarnos a traves del arte, especialmente del arte contemporaneo en la formacion de profesionales de la educacion, nos lleva a concretar propuestas docentes creativas para que los profesionales de la educacion seamos capaces de imaginar formas distintas de ensenar y aprender. Nuestros anos de experiencia y de conocimiento sobre ella nos llevan a cuestionar: ?Por que en el mundo de la educacion estan tan arraigados algunos modelos docentes??Por que se habla tanto de la necesidad del cambio y cuesta tanto su implementacion y sobretodo su continuidad? Y por tanto ?de que manera podemos articular los espacios formativos para deconstruir y…
Enquête sur l’atelier : histoire, fonctions, transformations
2014
Une stylisation de l’histoire de l’atelier d’artiste fait dependre ses fonctions du degre d’individualisation du travail createur, des innovations esthetiques et de l’economie de la production artistique. La periodisation qui suit fournit une trame sommaire. Indistinction entre art et artisanat d’abord : les ateliers sont situes dans les monasteres, dans les demeures des mecenes de la cour ou se confondent avec le domicile ou avec la boutique d’artisan en ville. Variabilite croissante des emp...
Le genre pendant la Covid-19
2022
Depuis le début de l’année 2020, le virus de la covid-19 a semé le trouble dans les habitudes de chacun.e. Confinement, fermetures administratives, télétravail, surcroît de charges professionnelles, en particulier pour les femmes en première ligne avec les métiers essentiels comme aide-soignante ou caissière. Sur le plan privé, la crise de la covid-19 et les restrictions qu’elle a engendrées ont contribué à recentrer les relations physiques quotidiennes sur la famille nucléaire (couple et ses enfants), tandis que les relations avec les proches qui ne vivent pas sous le même toit ont pu être soit distendues, soit dématérialisées (« apéros zoom », etc.). De nouveaux gestes « barrières » se so…
La suprema giurisdizione nella Sardegna moderna. Travagli della Real Audiencia (1564-1651)
2019
The institution of the Real Audiencia in the kingdom of Sardinia since the 1560s is part of a wider process which saw the rise and development of royal supreme courts of justice in several European countries of the early modern period. In fact, major State formation processes all around Europe required that monarchs increased their control on local authorities and that new increasingly centralised systems of judicial review gained precedence over all particular jurisdictions, feudal as well as municipal. This brought about a dramatic transformation in the field of criminal law enforcement and administration of justice.
On Mirkwood, Vampires and Rhododendrons : Experiencing Familiar Places through Fiction
2020
The article looks at the possibilities of studying familiar places, with no existing connection to fictional narratives, through the prism of fiction. nonPeerReviewed
Influence of bed roughness on flow and turbulence structure around a partially-buried, isolated freshwater mussel
2023
The present study uses eddy-resolving numerical simulations to investigate how bed roughness affects flow and turbulence structure around an isolated, partially-buried mussel (Unio elongatulus) aligned with the incoming flow. The rough-bed simulations resolve the flow past the exposed part of a gravel bed, whose surface is obtained from a laboratory experiment that also provides some additional data for validation of the numerical model. Results are also discussed for the limiting case of a horizontal smooth bed. Additionally, the effects of varying the level of burial of the mussel inside the substrate and the discharge through the two mussel siphons are investigated via a set of simulatio…
Comparison between the MHFEM formulation and a 2nd spatial order FV formulation of the linear groundwater flow problem
2008
Mixed and Mixed Hybrid Finite Elements (MHFE) methods have been widely used in the last decade for simulation of groundwater flow problem, petroleum reservoir problems, potential flow problems, etc. The main advantage of these methods is that, unlike the classical Galerkin approach, they guarantee local and global mass balance, as well the flux continuity between inter-element sides. The simple shape of the control volume, where the mass conservation is satisfied, makes also easier to couple this technique with a Finite Volume technique in the time splitting approach for the solution of advection-dispersion problems. In the present paper a new second spatial approximation order Finite Volum…