Save up to 99% of your time in mapping validation

Identifying semantic correspondences between different vocabularies has been recognized as a fundamental step towards achieving interoperability. Several manual and automatic techniques have been recently proposed. Fully manual approaches are very precise, but extremely costly. Conversely, automatic approaches tend to fail when domain specific background knowledge is needed. Consequently, they typically require a manual validation step. Yet, when the number of computed correspondences is very large, the validation phase can be very expensive. In order to reduce the problems above, we propose to compute the minimal set of correspondences, that we call the minimal mapping, which are sufficient to compute all the other ones. We show that by concentrating on such correspondences we can save up to 99% of the manual checks required for validation

Gramsci lettore, interprete e diffusore di Marx

The aim of this article is to investigate the Gramsci’s interpretation of Marx, emphasizing both a series of training initiatives promoted by the Sardinian intellectual in order to spread and popularize his thought. Gramsci identifies some pedagogical consequences of the education principle of the “philosophy of praxis”

FIRST RECORD IN ITALY OF PSYLLAEPHAGUS BLITEUS RIEK (Hymenoptera Encyrtidae) PARASITOID OF GLYCASPIS BRIMBLECOMBEI MOORE (Hemiptera Psyllidae)

Psyllaephagus bliteus Riek (Hymenoptera Encyrtidae), parasitoid of the red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera Psyllidae), has been recorded for the first time in Italy in September 2011. The arrival of P. bliteus in Sicily is due to an accidental introduction, probably together with its host, as already happened in New Zealand, Brazil, Spain and Morocco

Extending a geo-catalogue with matching capabilities

To achieve semantic interoperability, geo-spatial applications need to be equipped with tools able to understand user terminology that is typically different from the one enforced by standards. In this paper we summarize our experience in providing a semantic extension to the geo-catalogue of the Autonomous Province of Trento (PAT) in Italy. The semantic extension is based on the adoption of the S-Match semantic matching tool and on the use of a specifically designed faceted ontology codifying domain specific knowledge. We also briefly report our experience in the integration of the ontology with the geo-spatial ontology GeoWordNet

Living Knowledge

Diversity, especially manifested in language and knowledge, is a function of local goals, needs, competences, beliefs, culture, opinions and personal experience. The Living Knowledge project considers diversity as an asset rather than a problem. With the project, foundational ideas emerged from the synergic contribution of different disciplines, methodologies (with which many partners were previously unfamiliar) and technologies flowed in concrete diversity-aware applications such as the Future Predictor and the Media Content Analyser providing users with better structured information while coping with Web scale complexities. The key notions of diversity, fact, opinion and bias have been defined in relation to three methodologies: Media Content Analysis (MCA) which operates from a social sciences perspective; Multimodal Genre Analysis (MGA) which operates from a semiotic perspective and Facet Analysis (FA) which operates from a knowledge representation and organization perspective. A conceptual architecture that pulls all of them together has become the core of the tools for automatic extraction and the way they interact. In particular, the conceptual architecture has been implemented with the Media Content Analyser application. The scientific and technological results obtained are described in the following

Error estimates for a numerical approximation to the compressible barotropic Navier-Stokes equations

We present here a general method based on the investigation of the relative energy of the system, that provides an unconditional error estimate for the approximate solution of the barotropic Navier Stokes equations obtained by time and space discretization. We use this methodology to derive an error estimate for a specific DG/finite element scheme for which the convergence was proved in [27]. This is an extended version of the paper submitted to IMAJNA

Estimating Verdoorn law for Italian firms and regions

In empirical regional economics, returns to scale are typically estimated at the regional level in search for evidence on alternative theories of growth and agglomeration. However, returns to scale may also have a firm-level dimension. In this paper, we exploit micro level data and estimate the dynamic Verdoorn law in a multilevel-setting, where returns to scale are obtained simultaneously for the micro and the regional level. Using Italian firm-level data and the NUTS-3 level of aggregation, we estimate the classic and augmented versions of Verdoorn law for all sectors and separately for manufacturing. Our results show that increasing returns to scale co-exist at both levels, with some degree of regional heterogeneity across the Italian peninsula.Returns to scale, Verdoorn Law, Multilevel models, Italian firms

Per una fenomenologia delle crisi organiche. Dalla rivoluzione passiva fordista al comunismo del capitale.

Si tratta di uno studio sul concetto gramsciano di crisi organica, integrato dalle analisi di Habermas (degli anni '70) sulla crisi del capitalismo maturo

Limitazione del debito e concorso fra azione contrattuale ed extracontrattuale

Il supposto principio del concorso delle azioni, contrattuale e aquiliana, sembra, in effetti, ridursi ad una regola di limitata portata settoriale. Nel trasporto internazionale tale principio non opera, data la soluzione offerta dal diritto uniforme, che importa la parificazione di ogni tipo di azione ai fini dell'osservanza delle limitazioni convenzionali del debito risarcitorio: disciplina, questa, basata sullo «status» di vettore, ed estesa a dipendenti, preposti e vettori di fatto, per cui si rende inutile l'aquiliana. Nel diritto interno, appare corretta l'interpretazione adeguatrice al diritto uniforme in quanto non ostacolata da un principio che, nello stesso diritto interno, non esiste. Di conseguenza, nell'economia della citata decisione n. 1521 del 1983 della Cassazione è stato sufficiente, per escludere l'aquiliana, il semplice rilievo sulle limitazioni del debito risarcitorio derivanti dal diritto uniforme. Ma alla stessa conclusione negativa sulla proponibilità dell'aquiliana avrebbe condotto l'esame del problema del concorso delle azioni nell'ordinamento giuridico interno