999 resultados para Pacca, Francesco, cardinal.


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Includes bibliographical references.

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Mode of access: Internet.

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Facsim. of the Modena, 1846-1854 ed.

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Mode of access: Internet.

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I. Un prelat d'ancien regime.-II. La revolution, l'exil, le concordat.

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Cymothoid isopods Anilocra apogonae are regular ectoparasites of the cardinal fish Cheilodipterus quinquelineatus on the Great Barrier Reef. To determine whether this large isopod, attached to the head of the fish, affects the physiology and behaviour of its host, we conducted morphological measurements to obtain a condition index and several laboratory experiments on fish with and without isopods. The condition index did not vary between parasitised and non-parasitised wild fish. However, we found that parasitised fish lost more weight than unparasitised fish when fed a low food ration. Parasitised fish also had a higher rate of oxygen consumption than non-parasitised fish. When maintaining body posture in calm water, parasitised fish had an elevated pectoral fin beat frequency, probably because the isopod attaches asymmetrically, causing an asymmetrical weight balance for which the fish needs to compensate. Moreover, the sustained aerobic swimming speed as well as the swimming endurance at high water speeds were reduced in parasitised fish, possibly because of the drag from the parasite. The results suggest that parasites can have significant effects on fish even if this is not revealed by their body condition index in the wild. The metabolic effects found imply that parasitised fish may have to spend more time foraging to compensate for their higher metabolism. This could expose them to a higher risk of being eaten, a situation made worse by an impaired swimming ability that may reduce their capacity to escape a predator.

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A new approach to identify multivariable Hammerstein systems is proposed in this paper. By using cardinal cubic spline functions to model the static nonlinearities, the proposed method is effective in modelling processes with hard and/or coupled nonlinearities. With an appropriate transformation, the nonlinear models are parameterized such that the nonlinear identification problem is converted into a linear one. The persistently exciting condition for the transformed input is derived to ensure the estimates are consistent with the true system. A simulation study is performed to demonstrate the effectiveness of the proposed method compared with the existing approaches based on polynomials. (C) 2006 Elsevier Ltd. All rights reserved.

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Wavelet families arise by scaling and translations of a prototype function, called the mother wavelet. The construction of wavelet bases for cardinal spline spaces is generally carried out within the multi-resolution analysis scheme. Thus, the usual way of increasing the dimension of the multi-resolution subspaces is by augmenting the scaling factor. We show here that, when working on a compact interval, the identical effect can be achieved without changing the wavelet scale but reducing the translation parameter. By such a procedure we generate a redundant frame, called a dictionary, spanning the same spaces as a wavelet basis but with wavelets of broader support. We characterize the correlation of the dictionary elements by measuring their 'coherence' and produce examples illustrating the relevance of highly coherent dictionaries to problems of sparse signal representation.

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Book review: Heidelberg, Dordrecht, London, and New York, Springer, 2010, 189 pp., £93.55 (hardcover), ISBN 978-3-642-04330-7, e-ISBN 978-3-642-04331-4

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il lavoro si suddivide in una fase preliminare conoscitiva costituita da una ricerca storico-documentale sui principali eventi che hanno interessato San Giovanni in Persiceto e il complesso conventuale. per comprendere a pieno l'oggetto di studio sono stati studiati a fondo la vita e le opere dell'autore e le tendenze architettoniche del periodo storico in cui esercita. è stato eseguito un rilievo dettagliato impiegando tecniche ad alta definizione, come fotogrammetria e scansioni laser. per realizzare un progetto di restauro consapevole e rispettoso del monumento sono state condotte approfondite analisi tematiche e di degrado, in modo da acquisire una conoscenza diretta dell'edificio. per reintegrare l'unità d'immagine andata perduta, visto l'uso improprio che è stato fatto del bene, indispensabile per la comprensione dell'opera, è stata svolta un'attenta analisi della consistenza materica e una analogica con le opere dell'autore simili. gli interventi cercheranno di facilitare la lettura delle tracce presenti sul manufatto, e in maniera tutt'altro che invasiva verrà proposta la videoproiezione di quella che poteva essere l'immagine e la suggestione concepita dall'architetto. sono stati studiati restauri di casi analoghi e gli interventi della scuola di restauro nata a seguito delle devastazioni prodotte dalla guerra. per gli elementi ben conservati si attuerà un restauro conservativo. si restaura la pavimentazione, attraverso due diverse ipotesi che risolvono le possibili casistiche generate dalla rimozione delle superfetazioni. per valorizzare gli elementi architettonici si è proposto uno schema di sorgenti luminose diversificato in illuminazione generale d'ambiente ed un sistema di luci funzionale agli usi specifici.

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