1,721,140 research outputs found
Frantumazione e proceduralità
No full textFragmentation and procedurality
In the recent years, the rationale behind the link between edu-cational concepts and organizational and educational solu-tions are largely attributable to the companies’ organizational culture. Reference to a market utility as the ultimate goal of learning can explain the students’ growing extraneousness to-wards the educational culture, as well as the loss of teachers’ social authority. If we analyze the trends taking place from a social point of view, we realize that fragmentation and proce-durality, which are generally presented as indicators of mod-ernization choices, are the foundations of a regressive and dogmatic pedagogy. We could try to reverse this logic, which has shown in many ways to be a source of decay of the quali-ty of education
Embedding ecological knowledge into artificial neural network training: A marine phytoplankton primary production model case study
No full textEnhancing the understanding of marine phytoplankton primary production is paramount due to the relationships
with oceanic food webs, energy fluxes, carbon cycle and Earth's climate.
As field measurements of this process are both expensive and time consuming, indirect approaches, which can
estimate primary production from remotely sensed imagery, are the only viable large-scale solution. We boosted
the quality of phytoplankton primary production estimates, with respect to a previously developed model, by
embedding ecological knowledge into the training of an artificial neural network. In order to achieve this goal,
we drove the training procedure on the basis of both theoretical and data-derived ecological knowledge about
phytoplankton primary production. A “single peak” constraint exploits the theoretical knowledge about the
vertical shape of the production profile; a “depth-weighted error” procedure was based on available information
about the production magnitude along the water column; a variable learning rate and momentum approach
allowed to better exploit the available data to train our artificial neural network.
Thanks to this customized procedure, we improved the quality of the primary production estimates from both
a theoretical and a numerical point of view. Accordingly, the new artificial neural networks not only provided
ecologically sounder estimates, but also explained up to 4% more variance with respect to the traditional error
back-propagation solution. This result was achieved exclusively through an ecologically-driven customization of
the basic algorithm, since the dataset and predictive variables were the same utilized in the conventional
counterpart, trained with a classic error back-propagation algorithm.
We suggest that the proposed rationale could lead to improved performances in similar modelling applications
Collection and analysis of a global marine phytoplankton primary-production dataset
Full text link660285405
Autonomia ancillare
No full textAncillary autonomy
The current situation of the aims of educational systems in the globalized world can be considered critically, highlighting the oxymoron of an autonomy which is in-fact ancillary, as it is dependent by the market and the levels of productivity. School is often blamed for results that do not pursue anymore the canon of education but that are set in a different perspective, dictated by economic interests
Edda Ducci. La parola che educa
No full textIn occasione del decennale della scomparsa di Edda Ducci si riportano, in questo volumetto, alcune pagine dell’amico e collega, Francesco Mattei, e di uno dei suoi ultimi allievi, Cosimo Costa. Sono pagine da cui trarre l’azione viva dell’autrice, capace di lasciare sane impronte nell’animo di chi personalmente la conobbe e di chi tuttora la legge. Amante appassionata della conquista umana del vero, lontana dall’enfasi che la recente ricerca pedagogica ha evidenziato, Ducci è qui ricordata attraverso le annotazioni e le sottolineature delle dispense usate a Bari nel corso delle sue prime letture ebneriane e alcune delle sue principali «categorie paidetiche». Intenta a riflettere sulla parola per farla divenire Logos, Edda Ducci giunge a una concezione pedagogica dove l’uomo diviene umano grazie ad una paideia di natura dialogica che scava nell’in sé e si dà all’altro come necessarietà. Un ricordo affettuoso, dunque, e un invito alla lettura di pagine non ancora stinte dal tempo
- …
