1,721,113 research outputs found
G. Gandolfi,Studi di diritto privato
No full textG. Gandolfi,Studi di diritto privato. In: Revue internationale de droit comparé. Vol. 47 N°1, Janvier-mars 1995. pp. 270-271
G. Gandolfi,Studi di diritto privato
No full textG. Gandolfi,Studi di diritto privato. In: Revue internationale de droit comparé. Vol. 47 N°1, Janvier-mars 1995. pp. 270-271
G. Gandolfi, La conversione dell'atto invalido, t. I, // modello Germanico, t. II, // problema in procezione europea
No full textG. Gandolfi, La conversione dell'atto invalido, t. I, // modello Germanico, t. II, // problema in procezione europea. In: Revue internationale de droit comparé. Vol. 42 N°3, Juillet-septembre 1990. pp. 1043-1044
G. Gandolfi, La conversione dell'atto invalido, t. I, // modello Germanico, t. II, // problema in procezione europea
No full textG. Gandolfi, La conversione dell'atto invalido, t. I, // modello Germanico, t. II, // problema in procezione europea. In: Revue internationale de droit comparé. Vol. 42 N°3, Juillet-septembre 1990. pp. 1043-1044
Assessment of the transpirative deficit index for the Lombardy plain (Northern Italy)
No full textWater scarcity describes a situation of recurrent water imbalance, where water demand exceeds natural renewable availability, on a timescale of months, seasons or years. A recent report by the European Union shows that, due to the effects of global (socio-economic and climate) changes on water resources, water scarcity shall affect by 2030 many areas of Europe characterized by large water availability but also by a high water consumption,
such as the Po River Plain (Northern Italy). In the Po River Plain, irrigated crops cover more than 70% of the agricultural land, surface irrigation methods are largely applied, and massive amounts of water are diverted from rivers for irrigation. Additionally, an intensive agriculture coexists with highly developed industrial and commercial activities and with a considerable population, all requiring significant water volumes. Nowadays, the Po River
Plain is not a water scarce basin, but short-term water shortages (i.e. on a timescale of days or weeks) can occasionally occur in some areas, especially in years of drought (i.e. temporary, negative and severe deviations from average precipitation values on a mid-term timescale) such as 2003. The Lombardy Plain covers a quarter of the Po River Plain, and represents the study area for this work. The European Drought Observatory (EDO) focuses its efforts to drought predictability, by using statistical analysis of historical occurrences and numerical weather forecasts. The EDO working group regularly generates maps of drought indicators through all the EU, using both remote sensing and hydrological modelling. Simulations with hydrological models are always conducted in absence of irrigation inputs. However, a comprehensive analysis of water scarcity, which can be useful to agricultural water managers and farmers, requires a joint assessment of information about water availability and consumption. This analysis can not be conducted at the European scale, both for the coarseness of the hydrological modelling simulation conducted by EDO, and for the peculiarity of the Po River Plain irrigation system in which irrigation inputs provided by many irrigation water sources play a fundamental role in the soil water balance. In this context, a study was start to develop a set of indicators for Water Scarcity and Drought (WS&D) suitable for the assessment of the state of irrigated agriculture in Northern Italy, to be used by regional policy makers, agricultural water managers and farmers. Indicators will be based on the synergic use of hydrological modelling and earth observation information applied at a spatial scale of interest for end-users (i.e. cells of 250 m). As a first step, this work presents the implementation and the application to the entire Lombardy Plain of an agricultural drought index called Transpirative Deficit Index (DTx). DTx is based on the transpiration deficit (calculated as the difference between potential and actual transpiration) computed daily by a spatially distributed water balance model (IDRAGRA) and cumulated over a period of x days (where x is 10, 30, 60 or 90). We firstly computed this index in absence of irrigation inputs. The simulation model, IDRAGRA, is a distributed-parameters conceptual model, developed by the Section of Agricultural Hydraulics of the Department of Agricultural and Environmental Sciences (DiSAA) of the University of Milan, which allows the simulation of the irrigation water distribution and the computation of the hydrologic balance on a daily basis. The model core is a soil-crop water balance module, which accounts for spatial variability of soils, crops, meteorological and irrigation inputs by dividing the study area with a regular mesh (i.e. a 250 m resolution grid). Each cell identifies a soil volume, subdivided into two layers, modelled as non-linear reservoirs in cascade, where hydrological processes are represented as one-dimensional. Moreover, IDRAGRA includes modules devoted to the simulation of crop development as a function of air temperature, and of water sources conveyance and distribution over the territory. We applied the model to the Lombardy Plain for the temporal horizon 1993-2007 (15 years), calculating DTx indices for each x value. We compared DTx series for each day of a specific year to the corresponding DTx values of the historical series. In particular, parameters of the normal distribution fitting the 15 DTx values were calculated, and the position of DTx for each year was obtained in term of probability of exceeding a threshold percentile of the distribution. In this work we present the results for two years, respectively characterized by drought (year 2003) and abundant rainfall (year 2008) throughout Northern Italy. The DTx was computed conducting three simulations, each one for a hypothetical uniform land use: a reference crop (i.e. a hypothetical crop resembling an extensive surface of green grass of uniform height, actively growing and adequately watered), maize and permanent grass (these last two crops are very widespread in the Lombardy region). We supposed each crop uniformly distributed over the study area and considered and, for each simulation, only water supplied by rainfall (i.e. absence of irrigation). In that way, the distribution of DTx values reflects the potential water stress conditions for that crop linked to a specific pedo-climatic situation. For all the crops, the distribution of DTx reflects the intra-annual differences in crop growth during the vegetative season, based on the meteorological and soil
variability. In May, maize do not emerge at the same time throughout the study area, and until June DTx values are usually lower than those of the reference crop. In July, as crops are completely grown, DTx become higher than the reference. In conclusion, DTx can be a useful tool in the monitoring of the agricultural drought at the regional scale, reflecting the pedo-climatic variability throughout the study area. In the next future, we are planning to
include the effective land use and the irrigation supply into the hydrological simulation, to evaluate the suitability of the DTx also for water shortage assessment
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Il chiostro. Le sculture e Il vestibolo. La cappella di San Pietro d’Alcantara,
No full textLa storia artistica della chiesa di San Paolo in Monte a Bologna, sede del convento dei francescani osservanti, è racchiusa in questo monumentale volume curato da Donatella Biagi Maino e giulia Gandolfi. Nel saggio in questione vengono indagati i manufatti scultorei risalenti al Settecento, tutti realizzati in terracotta policroma, materiale che nel corso del Secolo dei Lumi trovò nuova fortuna critica anche nelle committenze ecclesiastiche più importanti
La posizione delle direzioni sistemi informativi
No full textLo sviluppo delle divisioni corporate nelle banche non ha ancora soddisfatto pienamente le attese, in termini di valore creato per la banca e per i clienti. È necessario infatti allineare maggiormente strategia, organizzazione e ICT: in particolare, l'empowerment del nuovo ruolo del gestore imprese non può ancora contare adeguatamente sulla tecnologia, che è invececomponente rilevante della catena del valore dei settori che trattano informazioni. L'attuale sviluppo dei "sistemi informativi di ruolo", intesi come l'insieme delle applicazioni a disposizione del gestore, è infatti ancora in uno stadio iniziale, così come la governance di tali sistemi è ancora poco definita.
Il volume nasce quindi dall'esigenza di approfondire tali aspetti, nell'ottica di individuare le azioni da intraprendere e le opportunità da cogliere per migliorare la gestione complessiva dei sistemi informativi di ruolo. Con un'approfondita indagine - alla base del volume - che ha coinvolto le direzioni corporate, le direzioni sistemi informativi e i gestori imprese di 12 principali banche, per ogni tipologia di prodotti/servizi offerti e di attività dei gestori viene esaminato il livello di sviluppo delle applicazioni, graduata la rilevanza competitiva dei fabbisogni ancora insoddisfatti e confrontate le opinioni delle due direzioni e dei gestori. Ne emerge una puntuale rappresentazione dell'attuale allineamento tra strategia competitiva e informatica: i sistemi di supporto nel corporate banking sono pensati più per la gestione dei diversi prodotti/servizi, che per l'ottimizzazione delle risposte alle esigenze espresse dalla clientela e per accrescere la capacità differenziale di assistenza dei gestori rispetto alle banche concorrenti.Tuttavia, esiste anche una forte domanda sia dei gestori sia delle direzioni per sistemi informativi che incidano sulla capacità di differenziazione competitiva delle modalità di vendita e di consulenza alle imprese.
Gli sforzi oggi focalizzati nel raggruppare, all'interno di workstation o portali, una serie di funzionalità prima disponibili solo singolarmente, appariranno quindi assolutamente insufficienti rispetto alle esigenze competitive e al ruolo che la tecnologia dovrà svolgere. I sistemi informativi di ruolo sono disegnati originariamente in funzione degli obiettivi di creazione duratura di valore nell'interazione con i clienti e nella gestione delle attività interne del ruolo. Essi sono l'armamento in dotazione al gestore, per enfatizzarne e potenziarne le competenze, la capacità di azione e il valore per il cliente e la banca
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