[Recensione a:] The Emergence of Film Culture. Knowledge, Production, Institution Building and the Fate of the Avant-garde in Europe, 1919-1945, Malte Hagener (Ed.), New York - Oxford, Berghahn, 2014

1reservedmixedAndrea MarianiMariani, Andre

La politicizzazione del film sperimentale. Cineguf e la Dolomiti film di Luciano Emmer nella produzione de \u2018Il Covo\u2019 (1941)

From the first half of the 1930s, at the peak of Fascist regime\u2019s institutionalization of youth culture, amateur film practices were gradually and systematically regimented towards the creation of a politicized experimental cinema. This article discusses this process of institutionalization by presenting and analysing the case of Dolomiti Film, an independent Italian film company managed by the Italian film director Luciano Emmer. The Dolomiti film company was predominantly devoted to Educational and Artistic cinema, and in 1941, it was appointed in the production of short films by the Scuola di Mistica Fascista \u2013 the most important cultural institution for the Fascist ideology, supported by Benito Mussolini himself

Microphysics of a Rationalist Utopia. Ruins, Town Plans and the Avant-Garde Documentary

In 1934, Giuseppe Terragni, the father of Italian architectural Rationalism, planned and directed the renovation work of the city of Como. Retracing this utopian project \u2013 definitively withdrawn after some years and never completed \u2013 the article points out the singular relationship between the Terragni Studio and the young comrades of the University Fascist Film Club of Como: the \u2018Cineguf\u2019. The Cineguf were a complex network of film clubs spread all over the country; they were fostered and equipped by the National Fascist Party in order to create a new generation of filmmakers for the new fascist cinema. In these groups the avant-garde culture of the cine-clubs and the official aesthetic debates about a genuine realism found an original and controversial solution. The focus here is on the short film realised by the Cineguf which was commissioned by the Terragni Studio and financed by the Urban Office of the Municipality: Renovation of the Quarter \u2018La Cortesella\u2019. I proceed by taking into account different degrees of conceptualisation of the \u2018trace\u2019, presenting a reflection on the complexity of the historiographical operation, including the ways in which the historical traces of these filmmakers\u2019 experience of modernity are identifiable in the text

Spectrum Sensing Algorithms for Cognitive Radio Applications

Future wireless communications systems are expected to be extremely dynamic, smart and capable to interact with the surrounding radio environment. To implement such advanced devices, cognitive radio (CR) is a promising paradigm, focusing on strategies for acquiring information and learning. The first task of a cognitive systems is spectrum sensing, that has been mainly studied in the context of opportunistic spectrum access, in which cognitive nodes must implement signal detection techniques to identify unused bands for transmission. In the present work, we study different spectrum sensing algorithms, focusing on their statistical description and evaluation of the detection performance. Moving from traditional sensing approaches we consider the presence of practical impairments, and analyze algorithm design. Far from the ambition of cover the broad spectrum of spectrum sensing, we aim at providing contributions to the main classes of sensing techniques. In particular, in the context of energy detection we studied the practical design of the test, considering the case in which the noise power is estimated at the receiver. This analysis allows to deepen the phenomenon of the SNR wall, providing the conditions for its existence and showing that presence of the SNR wall is determined by the accuracy of the noise power estimation process. In the context of the eigenvalue based detectors, that can be adopted by multiple sensors systems, we studied the practical situation in presence of unbalances in the noise power at the receivers. Then, we shift the focus from single band detectors to wideband sensing, proposing a new approach based on information theoretic criteria. This technique is blind and, requiring no threshold setting, can be adopted even if the statistical distribution of the observed data in not known exactly. In the last part of the thesis we analyze some simple cooperative localization techniques based on weighted centroid strategies

Improvement of BepiColombo's radio science experiment through an innovative Doppler noise reduction technique

The Mercury Orbiter Radio science Experiment (MORE), onboard the ESA/JAXA BepiColombo mission to Mercury, is designed to estimate Mercury’s gravity field, its rotational state, and to perform tests of relativistic gravity. The state-of-the-art onboard and ground instrumentations involved in the MORE experiment will enable to establish simultaneous X/X, X/Ka and Ka/Ka-band links, providing a range rate accuracy of 3 µm/s (at 1000 s integration time) and a range accuracy of 20 cm. The purpose of this work is to show the improvement achievable on MORE’s performance by means of the Time-Delay Mechanical Noise Cancellation (TDMC) technique. The TDMC consists in a combination of Doppler measurements collected (at different times) at the two-way antenna and at an additional, smaller and stiffer, receive-only antenna that should be located in a site with favorable tropospheric conditions. This configuration could reduce the leading noises in a Ka-band two-way link, such as those caused by troposphere and ground antenna mechanical vibrations. We present the results of end-to-end simulations and estimation of Mercury’s gravity field and rotational state considering the TDMC technique. We compare results for a two-way link from NASA’s DSS-25 (in Goldstone, CA) or from ESA’s DSA-3 (in Malargue, Argentina), while we assume APEX as the receive-only antenna. We show that in best-case noise conditions, the TDMC technique allows to obtain a factor-of-two accuracy gain on both global and local parameters, considering DSA-3 as two-way antenna. Such improvement in the scientific objectives of MORE is of geophysical interest as it could provide a constraint on the interior structure of Mercury