Search results for " broadcasting"

showing 10 items of 34 documents

A discussion of potential exposure metrics for use in epidemiological studies on human exposure to radiowaves from mobile phone base stations

2000

There is currently a high level of concern in many countries that exposure to radiowaves from mobile phone base stations may be hazardous to health. When investigating such suggested risks, epidemiologists need to define an exposure metric that can reliably discriminate between exposed and unexposed groups of people. We conducted a feasibility study to investigate if either short-term measurements of electric field strength, calculations of electric field strength, or distance from nearby mobile phone base stations could be used to develop a metric reflecting an individual's exposure to radiowaves. With electric field strengths in the range of 0.012-0.343 V/m, radiowaves from mobile phone b…

Population levelRadio WavesEpidemiologybusiness.industryPublic Health Environmental and Occupational HealthEnvironmental ExposureModels TheoreticalToxicologyPollutionTelephoneEpidemiologic StudiesBase stationElectromagnetic FieldsMobile phoneHuman exposureBase station antennasHumansEnvironmental sciencePublic HealthNetwork providersTelecommunicationsbusinessRadio broadcastingJournal of Exposure Science & Environmental Epidemiology
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A Multichannel Information System to Build and Deliver Rich User-Experiences in Exhibits and Museums

2011

In this article a multichannel information system to build and deliver rich user experiences in exhibits and museums is presented. The system was designed to use information about a particular exhibit or museum while delivering a wide user experience based on different distribution channels. The overall information is used to build different solutions that can be delivered simultaneously on different media from touch-screen installations to portable devices like smart phones. Moreover, all the devices signed in the environment are able to communicate to each others to increase the level of the usability of the system. A case study and analysis of experimental results are also provided.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniMultimediaComputer sciencebusiness.industrySatellite broadcastingUsabilitycomputer.software_genrePersonalizationExhibitionUser experience designServerGlobal Positioning SystemInformation systemMultichannel Information System User-experience exhibition integration musuems personalizationbusinesscomputer
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Parole chiave per i media studies

2018

Translation of the volume "Keywords for Media Studies" (edited by Laurie Ouellette and Jonathan Gray), NYU Press, 2017

Settore L-ART/06 - Cinema Fotografia E Televisionemedia studies gender studies social sciences television studies broadcastingSettore L-FIL-LET/14 - Critica Letteraria E Letterature Comparate
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Research and Implementation of Energy Dispersal Algorithm for DRM System

2020

The article investigates the randomization algorithm of the OFDM signal energy used in modern digital broadcasting systems. Transmission part of the DRM system was modeled in MATLAB/Simulink software environment, bit sequences allocation tests were conducted using the original information signal and the corresponding modulation symbols with a scrambling algorithm and without it.

SoftwareTransmission (telecommunications)Computer sciencebusiness.industryOrthogonal frequency-division multiplexingDigital broadcastingbusinessAlgorithmSignalEnergy (signal processing)ScramblingShift register2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus)
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Triblock SEBS/DVB crosslinked and sulfonated membranes: Fuel cell performance and conductivity

2021

[EN] A set of styrene-ethylene-butylene-styrene triblock copolymer (SEBS) membranes with 10 or 25 wt.% divinyl-benzene (DVB) as a crosslinking agent were prepared and validated. Physicochemical characterization revealed suitable hydrolytic and thermal stability of photo-crosslinked membranes containing 25%wt. DVB and post-sulfonated. These compositions were evaluated in H2/O2 single cells, and electrical and proton conductivities were furtherly assessed. The membranes with the milder post-sulfonation showed greater proton conductivity than those with excessive sulfonation. In terms of electrical conductivity, a universal power law was applied, and the values obtained were low enough for bei…

Solucions polimèriquesMaterials scienceCrosslinkingMembranesPolymers and PlasticsCopolymers09.- Desarrollar infraestructuras resilientes promover la industrialización inclusiva y sostenible y fomentar la innovaciónGeneral ChemistryConductivityPolyelectrolytesPolyelectrolyteSurfaces Coatings and Films08.- Fomentar el crecimiento económico sostenido inclusivo y sostenible el empleo pleno y productivo y el trabajo decente para todos07.- Asegurar el acceso a energías asequibles fiables sostenibles y modernas para todosMembraneChemical engineeringMAQUINAS Y MOTORES TERMICOSDigital Video BroadcastingMaterials ChemistryCopolymerFuel cellsFuel cellsMaterials
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Performance evaluation of the MPE-iFEC Sliding RS Encoding for DVB-H streaming services

2008

This article studies the performance of the Sliding RS Encoding (SRSE) in the transmission of streaming services in DVB-H (Digital Video Broadcasting - Transmission System for Handheld Terminals) networks. The SRSE forms part of a set of specifications called MPE-iFEC which has been recently defined in the DVB-SH (Digital Video Broadcasting - Satellite Services to Handheld Devices) standard and is fully compatible with the link layer of DVB-H. MPE-iFEC is capable of encoding information related to different datagram bursts in a jointly manner in order to counteract the long signal blockages expected in satellite reception. This is what is usually referred to as Multi-Burst Encoding (MBE) an…

Transmission (telecommunications)Computer sciencebusiness.industryReed–Solomon error correctionDatagramEncoding (memory)Digital Video BroadcastingSingle-frequency networkLink layerData_CODINGANDINFORMATIONTHEORYForward error correctionbusinessComputer network2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
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Contenidos virales en los informativos de televisión : el caso del profesor Kelly, entre el humor y el estereotipo

2019

Este artículo se encuentra disponible en la siguiente URL: https://revistadigitos.com/index.php/digitos/article/view/144/82 Esta número de la revista lleva por título "Acción colectiva digital: estructuras, repertorios y discursos". El objeto de este estudio es analizar cómo un producto ‘viral’ pasa a formar parte de los contenidos informativos en televisión, de manera que los criterios de noticiabilidad evolucionan y sitúan al mismo nivel los hechos de actualidad y los productos-tuits, memes, gifs o vídeos procedentes de las redes sociales. Para ejemplificar este argumento analizaremos el eco mediático del vídeo de la entrevista realizada el 10 de marzo de 2017 por la BBC al profesor de Re…

UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRASTelevision broadcasting of news - Content analysis - Spain.Televisión - Programas informativos - Análisis de contenido - España.:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]General Medicine
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Compte rendu de : Derek W. Vaillant, Across the Waves. How the United States and France Shaped the International Age of Radio, Urbana, University of …

2020

Varia; Compte rendu d'ouvrage

[SHS.HIST] Humanities and Social Sciences/History[SHS.HIST]Humanities and Social Sciences/HistoryFrench Broadcasting Systemhistoire culturellehistoire des médias
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Repair Mechanisms for Broadcast Transmissions in Hybrid Cellular & DVB-H Systems

2006

This paper proposes a framework for investigating potential infrastructure cost savings in hybrid cellular and DVB- H systems by performing efficient error repair of broadcast transmissions. The main idea is to reuse as much as possible the existing network infrastructure to provide mobile TV services. The cellular system is not only employed to collect information, but also to send repair data to the users whose conditions are temporarily affected by noise, interference and fading. To enable an easy and efficient implementation of the repair mechanisms we adopt the use of application layer - forward error correction (AL-FEC) with digital fountain coding.

business.industryComputer scienceDVB-HMobile televisionDigital Video BroadcastingFadingForward error correctionReusebusinessApplication layerComputer networkCoding (social sciences)2006 3rd International Symposium on Wireless Communication Systems
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Application Layer FEC for Mobile TV Delivery in IP Datacast Over DVB-H Systems

2009

In this paper we investigate the potential gain that can be obtained in DVB-H using application layer forward error correction (AL-FEC) to perform a multi-burst protection of the transmission for improving the reception of streaming services for mobile terminals. Compared to the conventional approach with link layer multi protocol encapsulation FEC (MPE-FEC), this technique allows to increase the robustness of the DVB-H transmission not only as a function of the capacity devoted for error repair (FEC overhead), but also as a function of the number of bursts jointly encoded. The main drawback of this approach is an increase of the network latency, that can be translated into a larger service…

business.industryComputer scienceDVB-HMobile televisionReal-time computingData_CODINGANDINFORMATIONTHEORYApplication layerlaw.inventionlawInternet ProtocolDigital Video BroadcastingMedia TechnologyLink layerForward error correctionElectrical and Electronic EngineeringbusinessAccess timeComputer networkIEEE Transactions on Broadcasting
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