489 research outputs found

    Editorial

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    Technology, Empowerment and Community Radio

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    This article will provide an overview of the conceptual contours of community media and community radio, highlighting some of the key questions shaping the debate and, with the help of a case study, show how digital media in the context of community radio can help local groups to get a voice in their local media systems, and how a university-based radio station, and its students and volunteers, play an important role for a more diverse and vibrant media content available in their area

    Editorial

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    Fragility and Empowerment: Community Television in the Digital Era

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    The advent of television technologies has significantly restructured the context within which community television producers operate. Digital technologies have undercut “spectrum scarcity” arguments for limiting access to distribution platforms and opened up new paths to reach audiences. It has also, however, seen a decline in some of the regulatory structures that provided protection to noncommercial providers in eras of spectrum scarcity. The rise of the prosumer has, in its focus on production by individuals, weakened some of the underpinnings (economic and ideological) for community-based production, with consequent challenges for the sustainability of these often precarious projects. In this article, we tease out the implications of digitization for community television operators, exploring the state of the sector in the liberal North Atlantic region, and compare “traditional” community channels with “newer” channels that have emerged in the digital context in the past two decades. Our study explores the opportunities and challenges that face the sector following the transition to digital model

    Spaces of Inclusion - An explorative study on needs of refugees and migrants in the domain of media communication and on responses by community media

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    COMMIT – Community Media Institute is based in Austria and works in the field of media training and research. COMMIT was commissioned by the Information Society Department of Council of Europe Directorate General of Human Rights and Rule of Law to realize this study. The Study consist of three sections which have been delivered by different experts and a common section of Conclusions and recommendations. The authors are (following the structure of the report): Section I: Community Media in Europe - an overview Salvatore Scifo, senior lecturer in Communication & Social Media at the School of Journalism, English and Communication at Bournemouth University, UK Section II: Study based on ethnographic interviews with refugees in Austria Jonas Hassemer, PhD candidate at the Linguistics Department, University of Vienna, A Brigitta Busch, professor at the Linguistics Department, University of Vienna, A Section III: The right to have a voice – Portraits of community media productions by migrants and refugees Nadia Bellardi, journalist and transcultural consultant, C

    Sustainable community media: The challenge of upholding the public trust

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    Editorial for the thematic issue on "Sustaining Community Media: Challenges and Strategies

    Nb superconductive thin film coating on flat Cu disks for high gradient applications

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    In this work we present the characterization of Nb superconductive films deposed on copper substrates with two different techniques: the PVD magnetron sputtering and the Pulsed Laser Ablation. In the first method Nb films ∌ 3”m thick were deposited with an average roughness of 160 nm. The superconductivity properties of these films were also determined with a 4-probe resistivity measurement. Data show a superconducting transition at 9.6K as expected from Nb films. With the second technique thick Nb films were deposited on copper substrates using the Pulsed Laser Ablation. In this case the Rutherford Backscattering was used to determine the thickness and the chemical state of these films that show different degrees of oxidation

    Molybdenum oxides coatings for high demanding accelerator components

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    Large electric gradients are required for a variety of new applications, notably including the extreme high brightness electron sources for X-ray free electron lasers (FELs), radio-frequency (RF) photo-injectors, industrial and medical accelerators, and linear accelerators for particle physics colliders. In the framework of the INFN-LNF, SLAC (USA), KEK (Japan), UCLA (Los Angeles) collaboration, the Frascati National Laboratories (LNF) are involved in the modelling, development, and testing of RF structures devoted to particles acceleration by high gradient electric fields of particles through metal devices. In order to improve the maximum sustainable gradients in normal-conducting RF-accelerating structures, both the RF breakdown and dark current should be minimized. To this purpose, studying new materials as well as manufacturing techniques are mandatory to identify better solutions to such extremely requested applications. In this contribution, we discuss the possibility of using a dedicated coating on a solid copper sample (and other metals) with a relatively thick film to improve and optimize breakdown performances and to minimize the dark current. We present here the first characterization of MoO3 films deposited on copper by pulsed-laser deposition (PLD)

    Institutioning and community radio. A comparative perspective

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    In recent years, designers have pointed to the role of institutioning, the way in which design processes and institutions are mutually shaped, constrained and enabled. This paper seeks to expand this discussion to the field of grassroots communities, a concept that enlightens the intersection between geographic communities and communities of interests/practice. The research draws on empirical work exploring the different experiences in four distinct socio-cultural and institutional contexts of Uganda, Ireland, Portugal and Romania to investigate how institutioning relate to the design of a new form of community radio based on an innovative technology. It also explores what are the practices that designers and grassroots communities use to manage and navigate potential constraints of institutioning, and offers comparative insight into how institutioning influences the design outcome. Using the concept of institutioning, we will show how, in this interaction, the grassroots communities in the making overcome the "space vs interest" dichotomy, and how institutions as well as communities play a role in shaping - and are potentially shaped by - the design process

    Observation of associated near-side and away-side long-range correlations in √sNN=5.02  TeV proton-lead collisions with the ATLAS detector

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    Two-particle correlations in relative azimuthal angle (Δϕ) and pseudorapidity (Δη) are measured in √sNN=5.02  TeV p+Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1  Όb-1 of data as a function of transverse momentum (pT) and the transverse energy (ÎŁETPb) summed over 3.1<η<4.9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2<|Δη|<5) “near-side” (Δϕ∌0) correlation that grows rapidly with increasing ÎŁETPb. A long-range “away-side” (Δϕ∌π) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small ÎŁETPb, is found to match the near-side correlation in magnitude, shape (in Δη and Δϕ) and ÎŁETPb dependence. The resultant Δϕ correlation is approximately symmetric about π/2, and is consistent with a dominant cos⁥2Δϕ modulation for all ÎŁETPb ranges and particle pT
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