518 research outputs found
Messa in luce del caposaldo B della base geodetica di Secchi sulla via Appia Antica (località Frattocchie; 12 gennaio 2013).
No full textDopo anni di ricerche in archivio e riscontri sul terreno dei dati in possesso, il 12 gennaio 2013 si è riportato alla luce il caposaldo B della base geodetica di A. Secchi (1818-1878), gesuita e direttore dell’Osservatorio Astronomico del Collegio Romano (XIX sec.). Base geodetica che rappresenta la distanza misurata con grande precisione tra due punti che nel nostro caso ha un’estensione di poco più di 12 km.
Le attività scientifiche che sin dalla metà del Settecento hanno avuto come teatro le vestigia romane della Regina Viarum, servirono principalmente per tre scopi:
a) studio del rapporto tra metro moderno e miglio romano grazie alla scoperta della posizione originaria delle pietre miliarie a seguito degli scavi di L. Canina (1851-1853);
b) disegno della cartografia dello Stato Pontificio, la prima con metodi moderni;
c) studio della forma della Terra.
La scoperta del caposaldo B completa la ricerca dei punti fondamentali delle suddette attività iniziate nel lontano 1999 quando fu scoperto il caposaldo A, punto iniziale della Base, dalla dr.ssa M. Marcelli davanti al mausoleo di Cecilia Metella.
La riscoperta e rivalutazione di questo patrimonio scientifico in un parco archeologico e naturale unico al mondo, sono state iniziate e coordinate dal sottoscritto, Tullio Aebischer, collaboratore del Gruppo di Didattica e Comunicazione della Fisica e dell’Astronomia del dip. di Matematica e Fisica dell’Università di Roma Tre. L’idea non è solo d’interesse scientifico, ma vuole rendere noto sia alla cittadinanza che ai turisti che percorrono l’antico basolato, che Roma è stata importante anche nella storia della scienza. Storia ancora oggi testimoniata da luoghi e punti che devono essere maggiormente tutelati e resi fruibili.
La messa in luce del caposaldo B, davanti al sepolcro sormontato dalla torretta costruita da Secchi nel 1870 in località Frattocchie (comune di Marino), è stata resa possibile dall’entusiasmante e volontaria collaborazione di:
a) per le misure georadar, Laboratorio di Geofisica del dip. di Matematica e Fisica dell’Univ. di Roma Tre (prof.ssa E. Pettinelli, archeologo P.M. Barone), che hanno permesso di verificare la presenza di un manufatto corrispondente ai documenti;
b) per la messa in luce, l’archeologa R. Lunetta e i volontari del circolo Legambiente ‘Appia sud- il riccio’ (pres. R. Arioli); c) per i rilievi topografici e GPS, il geom. F. Zonetti e dr. M. Miranda dello Studio E42.it.
Per tale successo, si ringrazia anche la disponibilità dell’Ente Parco Appia Antica e della Soprintendenza BB.AA. Lazio (dr. A. Betori).
Ora, il grande lavoro fatto permetterà di continuare a risolvere altri problemi d’interpretazione della documentazione. Inoltre, si spera che possa dimostrare come un certosino lavoro di ricerca permetta di creare occasioni di cultura rivalutando zone dell’Appia apparentemente ‘morte’. Da questo punto di vista il Parco, sin dal 2009, ha appoggiato la divulgazione di tale patrimonio con la Passeggiata Geodetica (dr. T. Aebischer e dr. E. Iannuzzi), ossia un trekking di 12 km lungo l’antica Via durante il quale si va alla scoperta della storia delle misure geodetiche, si introducono i primi rudimenti del GPS e si osserva con maggiore attenzione la variegata vegetazione e le problematiche della gestione del territorio che circonda l’antica Via. Per terminare, si spera che il Parco possa fregiarsi anche dell’appellativo di ‘geodetico’ a dimostrazione dell’attenzione verso la storia della scienza.
(da http://www.parcoappiaantica.it/it/notizienew.asp?id=649
Shakespeare from the House of Molière: The Comédie-Française/Pathé Live Roméo et Juliette (2016)
No full textThis is the author accepted manuscript. The final version is available from Bloomsbury via the ISBN in this recordThis chapter analyses the broadcast of Roméo et Juliette (Romeo and Juliet) that launched the Comédie-Française's collaboration with Pathé Live to bring three of the theatre's shows to cinema screens in Francophone regions. I argue that the company's approach to broadcasting is typical of French cultural exceptionalism, as cinema broadcasts in France draw on their own traditions of television broadcasting and their own training methods to produce an experience that is distinctive and in tune with the production's own mixture of traditional declamatory performance styles and performers at ease with direct address to the audience, both in the Salle Richelieu and cinemas
Matching of gauge invariant dimension-six operators for b -> s and b -> c transitions
No full textNew physics realized above the electroweak scale can be encoded in a model independent way in the Wilson coefficients of higher dimensional operators which are invariant under the Standard Model gauge group. In this article, we study the matching of the SU(3)(C) x SU(2)(L) x U(1)(Y) gauge invariant dimension-six operators on the standard B physics H(a)miltonian relevant for b -> s and b -> c transitions. The matching is performed at the electroweak scale (after spontaneous symmetry breaking) by integrating out the top quark, W, Z and the Higgs particle. We first carry out the matching of the dimension-six operators that give a contribution at tree level to the low energy Hamiltonian. In a second step, we identify those gauge invariant operators that do not enter b -> s transitions already at tree level, but can give relevant one-loop matching effects
South Bank Shakespeare Goes Global: Broadcasting from Shakespeare’s Globe and the National Theatre
No full textThis is the author accepted manuscript. The final version is available from Bloomsbury via the ISBN in this recordThis chapter argues that whereas their authority stems from their historical association with the early modern theatre industry, South Bank Shakespeares are shaped by the distinctive architectures and the types of performer-audience dynamics fostered by the affordances of the National Theatre and Shakespeare's Globe, as interpreted by their successive artistic directors. I show how through paratexts, camerawork, and the triggering of strong affective responses, broadcasts are able to generate atmospheres in which broadcast audiences experience a ‘distributed presence’ that transcends boundaries of time and space. A phenomenology of space and affect grounded in Michel de Certeau’s work allows me to explain how broadcasts generate the experience of spatial inclusion or exclusion, which in turn contributes to the sensation of participation in the event. I argue that strong affects have the capacity to transcend spatial and temporal boundaries, connecting remote audiences with the performance in the here-and-now of their emotional response. The handling of strong affect, combined with a representation of space as transactional, is a catalyst of 'aliveness'. My close analysis of broadcasts from the National Theatre and Shakespeare's Globe since 2003 reveals that the two companies generate distinctive modes of spectatorial engagement which, most recently, have merged to generate a more hybrid style of 'South Bank Shakespeare', with remote spectators responding to prompts within the broadcasts by engaging in digital modes of interaction
The energy demand of ICT: a historical perspective and current methodological challenges
No full textThis chapter provides an overview of energy demand issues in the field of ICT with a focus on the history of measuring, modelling and regulating ICT electricity consumption and the resulting methodological challenges. While the energy efficiency of ICT hardware has been dramatically improving and will continue to improve for some decades, the overall energy used for ICT is still increasing. The growing demand for ICT devices and services outpaces the efficiency gains of individual devices. Worldwide per capita ICT electricity consumption exceeded 100 kWh/year in 2007 (a value which roughly doubles if entertainment equipment is included) and is further increasing. Methodological challenges include issues of data collection and modelling ICT devices and services, assessing the entire life cycle of ICT devices and infrastructures, ac-counting for embedded ICT, and assessing the effect of software on ICT energy consumption
La base geodetica di Secchi sulla via Appia Antica (XIX sec.): il caposaldo B
No full textSi descrive l'attività di riscoperta dei lavori geodetici di Secchi lungo la via Appia Antica nel XIX sec.. In particolare, si evidenzia la scoperta di una parte del tombino che proteggeva il caposaldo B della base geodetica alle Frattocchie (Marino, Roma, Italia
ICT for sustainability: an emerging research field
No full textThis introductory chapter provides definitions of sustainability, sustainable development, decoupling, and related terms; gives an overview of existing interdisciplinary research fields related to ICT for Sustainability, including Environmental Informatics, Computational Sustainability, Sustainable HCI, and Green ICT; introduces a conceptual framework to structure the effects of ICT on sustainability; and provides an overview of this book
B physics beyond the Standard Model at one loop: complete renormalization groupe volution below the electroweak scale
No full textGeneral analyses of B-physics processes beyond the Standard Model require accounting for operator mixing in the renormalization-group evolution from the matching scale down to the typical scale of B physics. For this purpose the anomalous dimensions of the full set of local dimension-six operators beyond the Standard Model are needed. We present here for the first time a complete and non-redundant set of dimension-six operators relevant for B-meson mixing and decay, together with the complete one-loop anomalous dimensions in QCD and QED. These results are an important step towards the automation of general New Physics analyses
Matching of gauge invariant dimension-six operators for b → s and b → c transitions
No full textNew physics realized above the electroweak scale can be encoded in a model independent way in the Wilson coefficients of higher dimensional operators which are in-variant under the Standard Model gauge group. In this article, we study the matching of the SU(3)C × SU(2)L × U(1)Y gauge invariant dimension-six operators on the standard B physics Hamiltonian relevant for b → s and b → c transitions. The matching is performed at the electroweak scale (after spontaneous symmetry breaking) by integrating out the top quark, W , Z and the Higgs particle. We first carry out the matching of the dimension-six operators that give a contribution at tree level to the low energy Hamiltonian. In a second step, we identify those gauge invariant operators that do not enter b → s transitions already at tree level, but can give relevant one-loop matching effects
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