Search results for "Tale"
showing 10 items of 6428 documents
Valori pedagogici e criticità dell'elearning
2014
Cos’è un modello sostenibile? Come si connota, in particolare, un modello di formazione sostenibile? E, all’interno di questo, come si declina un modello di formazione ispirato all’elearning? Quali sono le ragioni pedagogiche ed economiche che hanno richiesto/richiedono l’utilizzo di questo approccio metodologico? Scopo di questo breve lavoro è di rispondere a questi interrogativi, privilegiando, in particolare, da una prospettiva pedagogica, la riflessione sull’elearning, oggetto, questa, spesso, di punti di vista radicalmente diversi che si situano, radicalizzando il discorso, tra una posizione fortemente contestativa della formazione online accusata di operare, spesso, forme di netta sep…
Langage et Apprentissage en Interaction pour des Assistants Numériques Autonomes - Une Approche Développementale
2021
The rapid development of digital assistants (DA) opens the way to new modes of interaction. Some DA allows users to personalise the way they respond to queries, in particular by teaching them new procedures. This work proposes to use machine learning methods to enrich the linguistic and procedural generalisation capabilities of these systems. The challenge is to reconcile rapid learning skills, necessary for a smooth user experience, with a sufficiently large generalisation capacity. Though this is a natural human ability, it remains out-of-reach for artificial systems and this leads us to approach these issues from the perspective of developmental Artificial Intelligence. This work is thus…
Energetic coupling between plastids and mitochondria drives CO2 assimilation in diatoms.
2015
International audience; Diatoms are one of the most ecologically successful classes of photosynthetic marine eukaryotes in the contemporary oceans. Over the past 30 million years, they have helped to moderate Earth's climate by absorbing carbon dioxide from the atmosphere, sequestering it via the biological carbon pump and ultimately burying organic carbon in the lithosphere. The proportion of planetary primary production by diatoms in the modern oceans is roughly equivalent to that of terrestrial rainforests. In photosynthesis, the efficient conversion of carbon dioxide into organic matter requires a tight control of the ATP/NADPH ratio which, in other photosynthetic organisms, relies prin…
Analysis of the vertical distribution in a model of phytoplankton dynamics
2010
Phytoplankton often faces the dilemma of living in contrasting gradients of two essential resources: the light that comes from above and nutrients that are often supplied from below. In poorly mixed water columns, algae can be heterogeneously distributed, with thin layers of biomass found on the surface, in depth, or on the sediment surface. Here, we show that these patterns can result from intraspecific competition between light and nutrients. First, we present numerical solutions of a reaction-diffusion-taxis model for phytoplankton, nutrients and light. We argue that motile phytoplankton can form a thin layer under poorly mixed conditions. The numerical solution of this model indicates t…
Polychromatic femtosecond fluorescence studies of metal–polypyridine complexes in solution
2011
Femtosecond-resolved broadband fluorescence studies are reported for[ M(bpy)(3)](2+) (M = Fe, Ru), RuN3 and RuN719 complexes in solution. We investigated the pump wavelength dependence of the fluorescence of aqueous [ Fe(bpy)(3)](2+) and the solvent and ligand dependence of the fluorescence of Ru-complexes excited at 400 nm. For all complexes, the (MLCT)-M-1 fluorescence appears at zero time delay with a mirror-like image with respect to the absorption. It decays in <= 30-45 fs due to intersystem crossing to the (MLCT)-M-3 states, but a longer lived component of similar to 190 fs additionally shows up in RuN719 and RuN3. No solvent effects are detected. The very early dynamics are character…
Arbitrage et rupture abusive de relations d'affaires établies
2017
International audience; (Civ. 1re, 21 octobre 2015, n° 14-25.080, Soc. Scarmark c/ Soc. Conserveries des cinq océans, D. 2015. 2537, note N. Dissaux ; ibid. 2526, obs. Centre de droit de la concurrence Yves Serra ; ibid. 2588, obs. T. Clay ; AJCA 2015. 520, obs. B. Ruy ; RTD civ. 2016. 118, obs. H. Barbier ; JurisData n° 2015-023370 ; JCP 2015. 1228, L. Weiller)
Rupture brutale de relations d'affaires établies, loi de police et validité de la clause d'arbitrage
2015
International audience; (Paris, 18 mars 2014, n° 12/13601, Sarl Sept de Cur c/ Soc. Babyjorn AB, D. 2014. 2541, obs. T. Clay, inédit)
Mas d’Is (Penàguila, Alicante): farms and Early Neolithic causewayed camps in the Serpis valley
2003
In this paper, results from recent archaeological field work carried out in the Neolithic village of Mas d’Is (Penàguila, Alicante) are presented. We focus on an important set of domestic and monumental architectural structures. Integration of data from the site in a regional context allows us to rethink the social relations of the first farmers in the area. At the same time, radiocarbon data from our excavations show a finer chronology of the neolithization in Western Mediterranean, and what is more important to approach its historical process.
Archeobotanical study of traditional agroecosystems based on SEM-EDX analysis of buried phytoliths
2015
The FP7 Project "MEditerranean MOntainous LAndscapes: an historical approach to cultural heritage based on traditional agrosystems (MEMOLA)" (http://www.memolaproject.eu/it) is studying past landscapes using ancient soil horizons as archaeological records. The project aims at evaluating the biodiversity of no longer existing environments, in order to reconstruct the past agroecosystems. One of the approach used in the study consisted in the selective sampling of buried paleo-soil horizons for the search of “testimonials” or useful pedo-archaeological "indicators" that can tell something about past environments and peculiar ecosystems no longer present. To this purpose it was decided to star…