1,725,387 research outputs found
Globalizzazioni. Di Fiore legge Stearns
No full textLa recensione critica analizza il volume di Peter Stearns (Globalization in World History, Routledge, New York 2010) che s’inserisce all’interno del dibattito sul timing della globalizzazione, ampiamente tematizzato nell’ambito della world history. Ripercorrendo le diverse ipotesi cronologiche, che vorrebbero alternativamente la globalizzazione un fenomeno individuabile solo a partire dagli anni Cinquanta del Novecento, o all’estremo opposto, un processo databile a 5000 anni fa, l’autore evidenzia soprattutto come la globalizzazione, lungi dall’essere considerata un processo lineare teleologicamente diretto ad una sempre maggiore integrazione del mondo fino agli esiti odierni, vada interpretato in termini di fasi storiche, caratterizzate da accelerazioni nel processo di integrazione planetaria così come da fratture e discontinuità
In fuga dallo stato. Di Fiore legge Scott
No full textIl testo affronta il dibattito intorno a Zomia di recente riacceso dal volume di James Scott, una storia “anarchica” della regione montuosa del Sudest asiatico, che, in una prospettiva inedita, ne individua il tratto caratterizzante nel suo costituirsi come “non state-space”. L’interesse per l’opposizione quotidiana delle società agrarie al processo di razionalizzazione capitalistica pone in luce le forme di resistenza al potere istituzionale, concretizzatesi talvolta, come nel caso della montagna asiatica, in vere e proprie alternative politiche al paradigma statual
Prefazione a "Il prezzo dell'immortalità" di P.P. Di Fiore
No full textPrefazione al libro di Pier Paolo Di Fiore sul cancro, promosso in collaborazione con la Fondazione AIRC
On the use of certain matrix algebras associated with trigonometric transforms in matrix displacement decomposition
No full textThe authors extend some recent results of Di Fiore and Zellini [Linear Algebra Appl.,
to appear], obtaining new classes of formulas for the displacement operator-based decomposition
of matrices. It is shown how an arbitrary matrix can be expressed as the sum of products of
matrices belonging to matrix algebras associated with certain versions of sine and cosine transforms.
Applications to the representation of the inverse of a Toeplitz and a Toeplitz plus Hankel matrix,
with and without symmetry, are presented. Implications on the computation of the product of these
matrices by a vector are discussed
Matrix displacement decompositions and apllications to Toeplitz linear systems
No full textUsing the approach of Bozzo, Di Fiore, and Zellini, new matrix displacement decomposition formulas are introduced. It is shown how an arbitrary square matrix A can be expressed as sums of products of Hessenberg algebra matrices and high level (block) matrices whose submatrices are Hessenberg algebra matrices and have variable sizes. In most cases these block factors are block-diagonal matrices. Then these formulas are used in sequential and parallel solution of Toeplitz systems
Matrix algebras and displacement decompositions
No full textA class xi of algebras of symmetric nxn matrices, related to Toeplitz-plus-Hankel structures and including the well-known algebra H diagonalized by the Hartley transform, is investigated. The algebras of xi are then exploited in a general displacement decomposition of an arbitrary nxn matrix A. Any algebra of xi is a 1-space, i.e., it is spanned by n matrices having as first rows the vectors of the canonical basis. The notion of 1-space (which generalizes the previous notions of L1 space [Bevilacqua and Zellini, Linear and Multilinear Algebra, 25 (1989), pp.1-25] and Hessenberg algebra [Di Fiore and Zellini, Linear Algebra Appl., 229 (1995), pp.49-99]) finally leads to the identification in xi of three new (non-Hessenberg) matrix algebras close to H, which are shown to be associated with fast Hartley-type transforms. These algebras are also involved in new efficient centrosymmetric Toeplitz-plus-Hankel inversion formulas
Spies in European Culture, 1815–1914. Representations, Networks, Practices
No full textThis volume brings together academics from the USA and across Europe to examine the nature, representations and perceptions of the figure of the spy in Europe between 1815 and 1914. As such, it is the first scholarly investigation of the genesis both of contemporary espionage and of the cultural imagination associated with it
False names, multiple nationalities: Spying in the nineteenth-century Mediterranean area
No full textThe article focuses on the spies and secret agents working for the police force of the Kingdom of the Two Sicilies or for diplomatic representatives, in particular in the Mediterranean area, an area of primary importance for nineteenth-century political exile. It first analyses how false identities were created by examining reports filed by Bourbon secret agents, and how they lived their fictitious lives. It also examines how fakery and dissemblance was used by considering the activities of spies and informers across the whole Mediterranean area. It then focuses on the entrenched view held by the authorities and the general public that adopting fictitious identities was a difficult task, as was identifying the fine line between truth and falsehood in the world of spying
Introduction: The circuit of the secret in reality and fiction
No full textThe introduction highlights aims and contents of the volume. The volume explores the historical profile, representations and perceptions surrounding the figure of the spy in Europe between 1815 and 1914. It is designed to shed light on the founding moment of espionage and the use of secrecy in politics in the contemporary age
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