1,721,055 research outputs found
The Kingdom of Naples: the Durazzo and Aragonese Families (1381-1501)
No full textUnder the Aragonese family (1442-1501), the kingdom of Naples played an important role in European politics. The Neapolitan court was a center of arts and culture thanks to the kings (Alfonso V the Magnanimous, Ferdinand I, Alfonso duke of Calabria) and to the relations between catalan, spanish, flemish, burgundian, roman, florentine, lombard, venetian artists, architects and literates. Less important was the court under the Anjou-Durazzo (1381-1435) and René of Anjou (1438-1442), and during the 16th century. Today there is still a good reason to speak of the myth of Aragonese Naples
Il knowledge management nella pubblica amministrazione
No full textil contributo ricostruisce il dibattito sul tema del knowledge managemnt per le amministrazioni pubbliche e individua le potenziali implicazioni di polic
Il regno di Napoli: i Durazzo e gli Aragona (1381-1495)
No full textSotto i re aragonesi, che pure dominarono per un periodo tutto sommato breve e non esente da turbolenze, il regno di Napoli visse un periodo veramente felice, per il ruolo che esso ebbe negli equilibri politici europei e per la sua centralità nei contatti tra ambienti culturali e artistici diversi: catalani, spagnoli, fiamminghi, borgognoni, romani, fiorentini e toscani in generale, lombardi, veneti. Meno significativo appare il ruolo della corte napoletana nella storia delle arti sia al tempo degli Angiò-Durazzo (1381-1435) e di Renato d’Angiò (1438-1442), sia nel Cinquecento.
La grandiosità di alcune realizzazioni di Alfonso V il Magnanimo, del figlio naturale Ferdinando o Ferrante I (1458-1494), del nipote Alfonso duca di Calabria (fossero esse “moderne”, cioè tardogotiche, o “all’antica”, cioè esemplate sui nuovi modelli rinascimentali), la varietà e qualità degli artisti assoldati dagli aragonesi giustificano la mitizzazione di quell’epoca, una mitizzazione che si manifestò già durante la vita del Magnanimo, si amplificò dopo la perdita dell’indipendenza, ed è durata, si può dire, fino ad oggi. La corte aragonese di Napoli, affollata di letterati e musici fin dai primi anni della conquista, fu insomma una novità sostanziale nella storia artistica, culturale e politica europea
Patient Relationship Management: primi spunti di riflessione
No full textIl testo è reperibile anche sul sito
www.sanita.regione.lombardia.it/pubblicazionivarie/telesanita.ht
About the granularity portability of block-based Krylov methods in heterogeneous computing environments
No full textLarge-scale problems in engineering and science often require the solution of sparse linear algebra problems and the Krylov subspace iteration methods (KM) have led to a major change in how users deal with them. But, for these solvers to use extreme-scale hardware efficiently a lot of work was spent to redesign both the KM algorithms and their implementations to address challenges like extreme concurrency, complex memory hierarchies, costly data movement, and heterogeneous node architectures. All the redesign approaches bases the KM algorithm on block-based strategies which lead to the Block-KM (BKM) algorithm which has high granularity (i.e., the ratio of computation time to communication time). The work proposes novel parallel revisitation of the modules used in BKM which are based on the overlapping of communication and computation. Such revisitation is evaluated by a model of their granularity and verified on the basis of a case study related to a classical problem from numerical linear algebra
Clustering Algorithms for Enhanced Trustworthiness on High-Performance Edge-Computing Devices
No full textQuality assurance of Gaver’s formula for multi-precision Laplace transform inversion in real case
No full textWe are concerned with Gaver’s formula, which is at the heart of a numerical algorithm, widely used in scientific and engineering applications, for computing approximations of inverse Laplace transform in multi-precision arithmetic systems. We demonstrate that, once parameters n (i.e. the number of terms of Gaver’s formula) and δ (i.e. an upper bound on noise on data) are given, then the number of correct significant digits of computed values of the inverse function is bounded above by −┌log10 (δ)┐ + 1. In case of noise free data this number is arbitrarily large, as it is bounded below by n. We establish the requirement of the multi-precision system ensuring that the quality of numerical results is fulfilled. Experiments and comparisons validate the effectiveness of such approach
A scalable Kalman Filter algorihm: trustworthy analysis on constrained least square model
No full textKalman filter (KF) is one of the most important and common estimation algorithms. We introduce an innovative designing of Kalman filter algorithm based on domain decomposition (we call it DD‐KF). DD‐KF involves decomposition of the whole computational problem, partitioning of the solution and a slight modification of KF algorithm allowing a correction at run‐time of local solutions. The resulted parallel algorithm consists of concurrent copies of KF algorithm, each one requiring the same amount of computations on each subdomain and an exchange of boundary conditions between adjacent subdomains. Main advantage of this approach is that it can be potentially applied in a moderately nonintrusive manner to existing codes for tracking and controlling systems in location, navigation, in computer graphics and in much more state estimation problems. To highlight the capability of DD‐KF of exploiting the computing power provided by future designs of microprocessors based on multi/many‐cores CPU/GPU technologies, we consider DD both at physical core level and at microprocessor level and we discuss scalability of DD‐KF algorithm at coarse and fine grained level. Throughout the present work, we derive and discuss DD‐KF algorithm for solving constrained least square model, which underlies any data sampling and estimation problem
A simple direct phosgeneless route to N-heteroaryl unsymmetrical ureas
No full textA new simple approach to the synthesis of unsymmetrical ureas HetNC(O)NRR¢ (HetNH =
pyrrole, indole, carbazole; R, R¢ = H, alkyl, aryl) has been explored, which involves the direct
reaction of the N-phenoxycarbonyl derivatives of pyrrole, indole and carbazole, HetNCO2Ph,
with amines. The aminolysis reaction can be catalyzed by the amidine base DBU
(1,8-diazabicyclo[5.4.0]undec-7-ene) under usually very mild conditions and provides a
straightforward convenient entry into the target products through a route which avoids the
traditional protocols based on multistep procedures and toxic phosgene or phosgene-derivatives
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