13 resultados para "new media dynamics"

em AMS Tesi di Dottorato - Alm@DL - Università di Bologna


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La crisi del “teatro come servizio pubblico” degli Stabili, Piccolo Teatro in testa, si manifesta allo stadio di insoddisfazione interna già alla fine degli anni Cinquanta. Se dal punto di vista della pratica scenica, la prima faglia di rottura è pressoché unanimemente ricondotta alla comparsa delle primissime messe in scena –discusse, irritanti e provocatorie- di Carmelo Bene e Quartucci (1959-60) più difficile è individuare il corrispettivo di un critico-intellettuale apportatore di una altrettanto deflagrante rottura. I nomi di Arbasino e di Flaiano sono, in questo caso, i primi che vengono alla mente, ma, seppure portatori di una critica sensibile al “teatro ufficiale”, così come viene ribattezzato dopo il Convegno di Ivrea (1967) il modello attuato dagli Stabili, essi non possono, a ben vedere, essere considerati i veri promotori di una modalità differente di fare critica che, a partire da quel Convegno, si accompagnerà stabilmente alla ricerca scenica del Nuovo Teatro. Ma in cosa consiste, allora, questa nuova “operatività” critica? Si tratta principalmente di una modalità capace di operare alle soglie della scrittura, abbracciando una progressiva, ma costante fuoriuscita dalla redazione di cronache teatrali, per ripensare radicalmente la propria attività in nuovi spazi operativi quali le riviste e l’editoria di settore, un rapporto sempre più stretto con i mass-media quali radio e televisione e la pratica organizzativa di momenti spettacolari e teorici al contempo -festival, convegni, rassegne e premi- per una forma di partecipazione poi identificata come “sporcarsi le mani”. La seconda parte della tesi è una raccolta documentaria sull’oggi. A partire dal Manifesto dei Critici Impuri redatto nel 2003 a Prato da un gruppo di critici dell'ultima generazione, la tesi utilizza quella dichiarazione come punto di partenza per creare un piccolo archivio sull’oggi raccogliendo le elaborazioni di alcune delle esperienze più significative di questi dieci anni. Ricca appendice di materiali.

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L’elaborato affronta il tema della massiccia diffusione di disinformazione tramite internet sotto il profilo del diritto costituzionale, nell’ottica di indagare se le dimensioni del fenomeno richiedano l’elaborazione di principi e soluzioni nuove ovvero se i paradigmi costituzionali enucleati dalla tradizione costituzionalistica con riferimento alla libertà d’espressione forniscano gli strumenti sufficienti per un intervento efficace. In tale ottica, il lavoro premette una ricostruzione del fenomeno della disinformazione nel tentativo di individuare il perimetro socio-cognitivo e tecnologico entro cui la medesima prolifera, descrivendo gli elementi che distinguono l’informazione diffusa dai nuovi media rispetto a quella veicolata dai media mainstream. Ciò premesso, lo studio passa a delineare lo “statuto costituzionale” del falso, indagando la rilevanza che la menzogna assume sotto il profilo costituzionale nel suo rapporto con la libertà di manifestazione del pensiero negli ordinamenti interno, europeo e statunitense. L’analisi prosegue poi con l’esame delle politiche di contrasto alla disinformazione introdotte da singoli Stati (prevalentemente Germania, Francia e Italia), Unione europea, e piattaforme, con l’obiettivo di mettere in luce vantaggi e limiti dei modelli di eteroregolamentazione, coregolamentazione e autoregolamentazione. Da ultimo, l’elaborato scompone alcune delle azioni e misure passate in rassegna e le analizza con la lente d’ingrandimento della libertà di manifestazione del pensiero, ordinandone i contenuti secondo la specifica propensione a comprimere la libertà d’espressione. L’indagine si conclude con alcuni brevi spunti conclusivi che evidenziano l’esigenza, in base ai principi costituzionali analizzati, che eventuali interventi normativi siano se del caso volti alla regolazione delle piattaforme, ovvero dei “contenitori”, lasciano i contenuti al libero scambio delle idee.

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This research argues for an analysis of textual and cultural forms in the American horror film (1968- 1998), by defining the so-called postmodern characters. The “postmodern” term will not mean a period of the history of cinema, but a series of forms and strategies recognizable in many American films. From a bipolar re-mediation and cognitive point of view, the postmodern phenomenon is been considered as a formal and epistemological re-configuration of the cultural “modern” system. The first section of the work examines theoretical problems about the “postmodern phenomenon” by defining its cultural and formal constants in different areas (epistemology, economy, mass-media): the character of convergence, fragmentation, manipulation and immersion represent the first ones, while the “excess” is the morphology of the change, by realizing the “fluctuation” of the previous consolidated system. The second section classifies the textual and cultural forms of American postmodern film, generally non-horror. The “classic narrative” structure – coherent and consequent chain of causal cues toward a conclusion – is scattered by the postmodern constant of “fragmentation”. New textual models arise, fragmenting the narrative ones into the aggregations of data without causal-temporal logics. Considering the process of “transcoding”1 and “remediation”2 between media, and the principle of “convergence” in the phenomenon, the essay aims to define these structures in postmodern film as “database forms” and “navigable space forms.” The third section applies this classification to American horror film (1968-1998). The formal constant of “excess” in the horror genre works on the paradigm of “vision”: if postmodern film shows a crisis of the “truth” in the vision, in horror movies the excess of vision becomes “hyper-vision” – that is “multiplication” of the death/blood/torture visions – and “intra-vision”, that shows the impossibility of recognizing the “real” vision from the virtual/imaginary. In this perspective, the textual and cultural forms and strategies of postmodern horror film are predominantly: the “database-accumulation” forms, where the events result from a very simple “remote cause” serving as a pretext (like in Night of the Living Dead); the “database-catalogue” forms, where the events follow one another displaying a “central” character or theme. In the first case, the catalogue syntagms are connected by “consecutive” elements, building stories linked by the actions of a single character (usually the killer), or connected by non-consecutive episodes about a general theme: examples of the first kind are built on the model of The Wizard of Gore; the second ones, on the films such as Mario Bava’s I tre volti della paura. The “navigable space” forms are defined: hyperlink a, where one universe is fluctuating between reality and dream, as in Rosemary’s Baby; hyperlink b (where two non-hierarchical universes are convergent, the first one real and the other one fictional, as in the Nightmare series); hyperlink c (where more worlds are separated but contiguous in the last sequence, as in Targets); the last form, navigable-loop, includes a textual line which suddenly stops and starts again, reflecting the pattern of a “loop” (as in Lost Highway). This essay analyses in detail the organization of “visual space” into the postmodern horror film by tracing representative patterns. It concludes by examining the “convergence”3 of technologies and cognitive structures of cinema and new media.

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The doctoral research project "Audiovisuals and Social Networks: Text and Experiences 2007-2010" is mainly based on the analysis of the international audiovisuals landscape and of the promotional strategies of these products in Social Networks environment. The aim is to understand what kind of changes we can find about the concept of "text", users and marketing. The thesis is focused not just on Social Network marketing but also on new media development, such as Social TV and mobile.

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La tesi si è consolidata nell’analisi dell’impatto dei social networks nella costruzione dello spazio pubblico, nella sfera di osservazione che è la rete e il web2.0. Osservando che il paradigma della società civile si sia modificato. Ridefinendo immagini e immaginari e forme di autorappresentazione sui new media (Castells, 2010). Nel presupposto che lo spazio pubblico “non è mai una realtà precostituita” (Innerarity, 2008) ma si muove all’interno di reti che generano e garantiscono socievolezza. Nell’obiettivo di capire cosa è spazio pubblico. Civic engagement che si rafforza in spazi simbolici (Sassen, 2008), nodi d’incontro significativi. Ivi cittadini-consumatori avanzano corresponsabilmente le proprie istanze per la debacle nei governi.. Cultura partecipativa che prende mossa da un nuovo senso civico mediato che si esprime nelle “virtù” del consumo critico. Portando la politica sul mercato. Cultura civica autoattualizzata alla ricerca di soluzioni alle crisi degli ultimi anni. Potere di una comunicazione che riduce il mondo ad un “villaggio globale” e mettono in relazione i pubblici connessi in spazi e tempi differenti, dando origine ad azioni collettive come nel caso degli Indignados, di Occupy Wall Street o di Rai per una notte. Emerge un (ri)pensare la citizenship secondo due paradigmi (Bennett,2008): l’uno orientato al governo attraverso i partiti, modello “Dutiful Citizenship”; l’altro, modello “Self Actualizing Citizenship” per cui i pubblici attivi seguono news ed eventi, percepiscono un minor obbligo nel governo, il voto è meno significativo per (s)fiducia nei media e nei politici. Mercato e società civile si muovono per il bene comune e una nuova “felicità”. La partecipazione si costituisce in consumerismo politico all’interno di reti in cui si sviluppano azioni individuali attraverso il social networking e scelte di consumo responsabile. Partendo dall’etnografia digitale, si è definito il modello “4 C”: Conoscenza > Coadesione > Co-partecipazione > Corresposabilità (azioni collettive) > Cultura-bility.

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The present dissertation aims at analyzing the construction of American adolescent culture through teen-targeted television series and the shift in perception that occurs as a consequence of the translation process. In light of the recent changes in television production and consumption modes, largely caused by new technologies, this project explores the evolution of Italian audiences, focusing on fansubbing (freely distributed amateur subtitles made by fans for fan consumption) and social viewing (the re-aggregation of television consumption based on social networks and dedicated platforms, rather than on physical presence). These phenomena are symptoms of a sort of ‘viewership 2.0’ and of a new type of active viewing, which calls for a revision of traditional AVT strategies. Using a framework that combines television studies, new media studies, and fandom studies with an approach to AVT based on Descriptive Translation Studies (Toury 1995), this dissertation analyzes the non-Anglophone audience’s growing need to participation in the global dialogue and appropriation process based on US scheduling and informed by the new paradigm of convergence culture, transmedia storytelling, and affective economics (Jenkins 2006 and 2007), as well as the constraints intrinsic to multimodal translation and the different types of linguistic and cultural adaptation performed through dubbing (which tends to be more domesticating; Venuti 1995) and fansubbing (typically more foreignizing). The study analyzes a selection of episodes from six of the most popular teen television series between 1990 and 2013, which has been divided into three ages based on the different modes of television consumption: top-down, pre-Internet consumption (Beverly Hills, 90210, 1990 – 2000), emergence of audience participation (Buffy the Vampire Slayer, 1997 – 2003; Dawson’s Creek, 1998 – 2003), age of convergence and Viewership 2.0 (Gossip Girl, 2007 – 2012; Glee, 2009 – present; The Big Bang Theory, 2007 - present).

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La presente ricerca ha avuto come obbietivo studiare come stia avvenendo l'adattamento dei tradizionali laboratori fotochimici di film alle tecniche digitali attraverso l'analisi delle politiche di preservazione, del restauro, dei costi relativi all’acquisto di nuove apparecchiature e della migrazione ai nuovi media presso il British Film Institute (BFI), lo Svenska Filminstitutet (SFI), l’Eye Filmmuseum, L'Immagine Ritrovata e ANIM - Cinemateca Portuguesa. A questo scopo è stato utilizzato il metodo dello studio di caso, in cui sono state effettuate interviste con gestori e tecnici delle istituzioni citate al fine di rispondere al quesito della presente ricerca: quali sono l’impatto e le implicazioni di questo adattamento? Quali sono i risultati raggiunti con le nuove attrezzature e metodi di restauro e preservazione? Per arrivare a rispondere a queste domande lo studio è stato diviso in due sezioni. Nella prima parte, sono riportate le interviste svolte presso SFI, BFI, Eye e L'Immagine Ritrovata, realizzate al fine di ottenere dati che permettessero di formulare un'intervista più completa e approfondita. Successivamente, questa intervista più dettagliata è stata condotta con una sola istituzione, la Cinemateca Portuguesa. Pertanto, nella seconda parte dello studio di caso, sono state realizzate interviste a tecnici e dirigenti di ANIM - Cinemateca Portuguesa e dei suoi laboratori partner. L'analisi dei risultati comprende tutte le informazioni provenienti dalle cinque istituzioni intervistate. È stato notato che l'adattamento al digitale ha effettivamente apportato miglioramenti nella preservazione e nel recupero del materiale fotochimico, ma ciò ha anche fatto sorgere alcuni dilemmi nei laboratori. C'è apprensione per la scarsità di materiale della filiera fotochimica e per una sua ipotetica fine nel prossimo futuro, poiché non ci sono ancora sufficienti conoscenze sulla filiera digitale e sul comportamento di questi media con il passare del tempo. Gli intervistati hanno altresì dimostrato positività riguardo alle tecnologie digitali.

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Understanding the complex relationships between quantities measured by volcanic monitoring network and shallow magma processes is a crucial headway for the comprehension of volcanic processes and a more realistic evaluation of the associated hazard. This question is very relevant at Campi Flegrei, a volcanic quiescent caldera immediately north-west of Napoli (Italy). The system activity shows a high fumarole release and periodic ground slow movement (bradyseism) with high seismicity. This activity, with the high people density and the presence of military and industrial buildings, makes Campi Flegrei one of the areas with higher volcanic hazard in the world. In such a context my thesis has been focused on magma dynamics due to the refilling of shallow magma chambers, and on the geophysical signals detectable by seismic, deformative and gravimetric monitoring networks that are associated with this phenomenologies. Indeed, the refilling of magma chambers is a process frequently occurring just before a volcanic eruption; therefore, the faculty of identifying this dynamics by means of recorded signal analysis is important to evaluate the short term volcanic hazard. The space-time evolution of dynamics due to injection of new magma in the magma chamber has been studied performing numerical simulations with, and implementing additional features in, the code GALES (Longo et al., 2006), recently developed and still on the upgrade at the Istituto Nazionale di Geofisica e Vulcanologia in Pisa (Italy). GALES is a finite element code based on a physico-mathematical two dimensional, transient model able to treat fluids as multiphase homogeneous mixtures, compressible to incompressible. The fundamental equations of mass, momentum and energy balance are discretised both in time and space using the Galerkin Least-Squares and discontinuity-capturing stabilisation technique. The physical properties of the mixture are computed as a function of local conditions of magma composition, pressure and temperature.The model features enable to study a broad range of phenomenologies characterizing pre and sin-eruptive magma dynamics in a wide domain from the volcanic crater to deep magma feeding zones. The study of displacement field associated with the simulated fluid dynamics has been carried out with a numerical code developed by the Geophysical group at the University College Dublin (O’Brien and Bean, 2004b), with whom we started a very profitable collaboration. In this code, the seismic wave propagation in heterogeneous media with free surface (e.g. the Earth’s surface) is simulated using a discrete elastic lattice where particle interactions are controlled by the Hooke’s law. This method allows to consider medium heterogeneities and complex topography. The initial and boundary conditions for the simulations have been defined within a coordinate project (INGV-DPC 2004-06 V3_2 “Research on active volcanoes, precursors, scenarios, hazard and risk - Campi Flegrei”), to which this thesis contributes, and many researchers experienced on Campi Flegrei in volcanological, seismic, petrological, geochemical fields, etc. collaborate. Numerical simulations of magma and rock dynamis have been coupled as described in the thesis. The first part of the thesis consists of a parametric study aimed at understanding the eect of the presence in magma of carbon dioxide in magma in the convection dynamics. Indeed, the presence of this volatile was relevant in many Campi Flegrei eruptions, including some eruptions commonly considered as reference for a future activity of this volcano. A set of simulations considering an elliptical magma chamber, compositionally uniform, refilled from below by a magma with volatile content equal or dierent from that of the resident magma has been performed. To do this, a multicomponent non-ideal magma saturation model (Papale et al., 2006) that considers the simultaneous presence of CO2 and H2O, has been implemented in GALES. Results show that the presence of CO2 in the incoming magma increases its buoyancy force promoting convection ad mixing. The simulated dynamics produce pressure transients with frequency and amplitude in the sensitivity range of modern geophysical monitoring networks such as the one installed at Campi Flegrei . In the second part, simulations more related with the Campi Flegrei volcanic system have been performed. The simulated system has been defined on the basis of conditions consistent with the bulk of knowledge of Campi Flegrei and in particular of the Agnano-Monte Spina eruption (4100 B.P.), commonly considered as reference for a future high intensity eruption in this area. The magmatic system has been modelled as a long dyke refilling a small shallow magma chamber; magmas with trachytic and phonolitic composition and variable volatile content of H2O and CO2 have been considered. The simulations have been carried out changing the condition of magma injection, the system configuration (magma chamber geometry, dyke size) and the resident and refilling magma composition and volatile content, in order to study the influence of these factors on the simulated dynamics. Simulation results allow to follow each step of the gas-rich magma ascent in the denser magma, highlighting the details of magma convection and mixing. In particular, the presence of more CO2 in the deep magma results in more ecient and faster dynamics. Through this simulations the variation of the gravimetric field has been determined. Afterward, the space-time distribution of stress resulting from numerical simulations have been used as boundary conditions for the simulations of the displacement field imposed by the magmatic dynamics on rocks. The properties of the simulated domain (rock density, P and S wave velocities) have been based on data from literature on active and passive tomographic experiments, obtained through a collaboration with A. Zollo at the Dept. of Physics of the Federici II Univeristy in Napoli. The elasto-dynamics simulations allow to determine the variations of the space-time distribution of deformation and the seismic signal associated with the studied magmatic dynamics. In particular, results show that these dynamics induce deformations similar to those measured at Campi Flegrei and seismic signals with energies concentrated on the typical frequency bands observed in volcanic areas. The present work shows that an approach based on the solution of equations describing the physics of processes within a magmatic fluid and the surrounding rock system is able to recognise and describe the relationships between geophysical signals detectable on the surface and deep magma dynamics. Therefore, the results suggest that the combined study of geophysical data and informations from numerical simulations can allow in a near future a more ecient evaluation of the short term volcanic hazard.

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The Project dealt with the development of settlement pattern and the irrigation system in Samarkand oasis. The main topic of the research is the dating of the Dargom canal, the main water supply of Samarkand in the ancient times as well as today. The Project provided a new hypothesis on the chronology of Dargom, dated back to the Early centuires of the Current Era, in relation with the different phases of the settlement patterns. The researches were carried out with several international teams and schoalrs belonging to several disciplines.

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Organizational and institutional scholars have advocated the need to examine how processes originating at an individual level can change organizations or even create new organizational arrangements able to affect institutional dynamics (Chreim et al., 2007; Powell & Colyvas, 2008; Smets et al., 2012). Conversely, research on identity work has mainly investigated the different ways individuals can modify the boundaries of their work in actual occupations, thus paying particular attention to ‘internal’ self-crafting (e.g. Wrzesniewski & Dutton, 2001). Drawing from literatures on possible and alternative self and on positive organizational scholarship (e.g., Obodaru, 2012; Roberts & Dutton, 2009), my argument is that individuals’ identity work can go well beyond the boundaries of internal self-crafting to the creation of new organizational arrangements. In this contribution I analyze, through multiple case studies, healthcare professionals who spontaneously participated in the creation of new organizational arrangements, namely health structures called Community Hospitals. The contribution develops this form of identity work by building a grounded model. My findings disclose the process that leads from the search for the enactment of different self-concepts to positive identities, through the creation of a new organizational arrangement. I contend that this is a particularly complex form of collective identity work because it requires, to be successful, concerted actions of several internal, external and institutional actors, and it also requires balanced tensions that – at the same time - enable individuals’ aspirations and organizational equilibrium. I name this process organizational collective crafting. Moreover I inquire the role of context in supporting the triggering power of those unrealized selves. I contribute to the comprehension of the consequences of self-comparisons, organizational identity variance, and positive identity. The study bears important insights on how identity work originating from individuals can influence organizational outcomes and larger social systems.

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In the first part of the thesis, we propose an exactly-solvable one-dimensional model for fermions with long-range p-wave pairing decaying with distance as a power law. We studied the phase diagram by analyzing the critical lines, the decay of correlation functions and the scaling of the von Neumann entropy with the system size. We found two gapped regimes, where correlation functions decay (i) exponentially at short range and algebraically at long range, (ii) purely algebraically. In the latter the entanglement entropy is found to diverge logarithmically. Most interestingly, along the critical lines, long-range pairing breaks also the conformal symmetry. This can be detected via the dynamics of entanglement following a quench. In the second part of the thesis we studied the evolution in time of the entanglement entropy for the Ising model in a transverse field varying linearly in time with different velocities. We found different regimes: an adiabatic one (small velocities) when the system evolves according the instantaneous ground state; a sudden quench (large velocities) when the system is essentially frozen to its initial state; and an intermediate one, where the entropy starts growing linearly but then displays oscillations (also as a function of the velocity). Finally, we discussed the Kibble-Zurek mechanism for the transition between the paramagnetic and the ordered phase.

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Cardiotocography (CTG) is a widespread foetal diagnostic methods. However, it lacks of objectivity and reproducibility since its dependence on observer's expertise. To overcome these limitations, more objective methods for CTG interpretation have been proposed. In particular, many developed techniques aim to assess the foetal heart rate variability (FHRV). Among them, some methodologies from nonlinear systems theory have been applied to the study of FHRV. All the techniques have proved to be helpful in specific cases. Nevertheless, none of them is more reliable than the others. Therefore, an in-depth study is necessary. The aim of this work is to deepen the FHRV analysis through the Symbolic Dynamics Analysis (SDA), a nonlinear technique already successfully employed for HRV analysis. Thanks to its simplicity of interpretation, it could be a useful tool for clinicians. We performed a literature study involving about 200 references on HRV and FHRV analysis; approximately 100 works were focused on non-linear techniques. Then, in order to compare linear and non-linear methods, we carried out a multiparametric study. 580 antepartum recordings of healthy fetuses were examined. Signals were processed using an updated software for CTG analysis and a new developed software for generating simulated CTG traces. Finally, statistical tests and regression analyses were carried out for estimating relationships among extracted indexes and other clinical information. Results confirm that none of the employed techniques is more reliable than the others. Moreover, in agreement with the literature, each analysis should take into account two relevant parameters, the foetal status and the week of gestation. Regarding the SDA, results show its promising capabilities in FHRV analysis. It allows recognizing foetal status, gestation week and global variability of FHR signals, even better than other methods. Nevertheless, further studies, which should involve even pathological cases, are necessary to establish its reliability.

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The present work aims to investigate the influence of different aspects, such as non-standard steady solutions, complex fluid rheologies and non-standard porous-channel geometries, on the stability of a Darcy-Bénard system. In order to do so, both linear and nonlinear stability theories are considered. A linear analysis focuses on studying the dynamics of the single disturbance wave present in the system, while its nonlinear counterpart takes into consideration the interactions among the single modes. The scope of the stability analysis is to obtain information regarding the transition from an equilibrium solution to another one, and also information regarding the transition nature and the emergent solution after the transition. The disturbance governing equations are solved analytically, whenever possible, and numerical by considering different approaches. Among other important results, it is found that a cylinder cross-section does not affect the thermal instability threshold, but just the linear pattern selection for dilatant and pseudoplastic fluid saturated porous media. A new rheological model is proposed as a solution for singular issues involving the power-law model. Also, a generalised class of one parameter basic solutions is proposed as an alternative description of the isoflux Darcy--Bénard problem. Its stability is investigated.