4 resultados para cloud computing, cloud federation, concurrent live migration, data center, qemu, kvm, libvirt

em WestminsterResearch - UK


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Physical location of data in cloud storage is a problem that gains a lot of attention not only from the actual cloud providers but also from the end users' who lately raise many concerns regarding the privacy of their data. It is a common practice that cloud service providers create replicate users' data across multiple physical locations. However, moving data in different countries means that basically the access rights are transferred based on the local laws of the corresponding country. In other words, when a cloud service provider stores users' data in a different country then the transferred data is subject to the data protection laws of the country where the servers are located. In this paper, we propose LocLess, a protocol which is based on a symmetric searchable encryption scheme for protecting users' data from unauthorized access even if the data is transferred to different locations. The idea behind LocLess is that "Once data is placed on the cloud in an unencrypted form or encrypted with a key that is known to the cloud service provider, data privacy becomes an illusion". Hence, the proposed solution is solely based on encrypting data with a key that is only known to the data owner.

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E-poltergeist takes over the user’s internet browser, automatically initiating Web searches without their permission. Web-based artwork which explores issues of user control when confronted with complex technological systems, questioning the limits of digital interactive arts as consensual reciprocal systems. e-poltergeist was a major web commission that marked an early stage of research in a larger enquiry by Craighead and Thomson into the relationship between live virtual data, global communications networks and instruction-based art, exploring how such systems can be re-contextualised within gallery environments. e-poltergeist presented the 'viewer' with a singular narrative by using live internet search-engine data that aimed to create a perpetual and virtually unstoppable cycle of search engine results, banner ads and moving windows as an interruption into the normal use of an internet browser. The work also addressed the ‘de-personalisation’ of internet use by sending a series of messages from the live search engine data that seemed to address the user directly: 'Is anyone there?'; 'Can anyone hear me?', 'Please help me!'; 'Nobody cares!' e-poltergeist makes a significant contribution to the taxonomy of new media art by dealing with the way that new media art can re-address notions of existing traditions in art such as appropriation and manipulation, instruction-based art and conceptual art. e-poltergeist was commissioned ($12,000) for 010101: Art in Technological Times, a landmark international exhibition presented by the San Francisco Museum of Modern Art, which bought together leading international practitioners working with emergent technologies, including Tatsuo Miyajima, Janet Cardiff, Brian Eno. Peer recognition of the project in the form of reviews include: Curating New Media. Gateshead: Baltic Centre for Contemporary Art. Cook, Sarah, Beryl Graham and Sarah Martin ISBN: 1093655064; The Wire; http://www.wired.com/culture/lifestyle/news/2000/12/40464 (review by Reena Jana); Leonardo (review Barbara Lee Williams and Sonya Rapoport) http://www.leonardo.info/reviews/feb2001/ex_010101_willrapop.html All the work is developed jointly and equally between Craighead and her collaborator, Jon Thomson, Slade School of Fine Art.

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Interactive gallery installation which playfully re-contextualised online news feeds from CNN’s website with a soundtrack of found music in order to comment on an online environment where 'serious' news and trivial 'infotainment' often occupy the same space. ‘CNN Interactive just got more interactive’ aimed to investigate the balance between information and ‘info-tainment’ on the web. It demonstrated how the authority and presence of global news corporations online could be playfully subverted by enabling the audience to add a variety of emotively titled soundtracks to the monolithic CNN Interactive website. The project also explored how a work could exist dually as website and gallery installation. ‘CNN interactive’ contributes to the taxonomy of new media art as a new form of contemporary art. One of the first examples in the world of a gallery installation using live Internet data, it is also one of the first attempts in a new media art context to address how individuals respond to and comprehend the changed nature of the news as an immediate phenomenon as relayed by network communications systems. 'CNN interactive’ continues Craighead and Thomson’s research into how live digital networked information can be re-purposed as artistic material within gallery installation contexts but with specific reference to online-international news events, rather than arbitrary data sources (see e-poltergeist, output 1). ‘CNN Interactive’ was commissioned by Tate Britain for the exhibition ‘Art and Money Online’. This was the first gallery exhibition in Tate Britain featuring work that utilised and explored new media as an artistic area, and the first work commissioned by the Tate to operate simultaneously as an online gallery artwork. Selected reviews and citations include ‘Digital Art’ by Christiane Paul, 2003; ‘Internet Art: The Online Clash of Culture and Commerce’ by Julian Stallabrass. (2002); ‘Thomson & Craighead’ by Lisa Le Feuvre for Katalog Journal of Photography and Video, Denmark. All work is developed jointly and equally between Craighead and her collaborator, Jon Thomson, (Slade).

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Online artwork which streams web-cam images live from the Internet and re-mixes them into disjointed narrative sequences, thereby producing cinema as a 'found object' made entirely of live material streamed from the internet. ‘Short Films about Flying’ is an online film which explores how a cinematic work can be generated using live material from the internet. The work is driven by software that takes surveillance video from a live camera feed at Logan Airport, Boston, and combines this with randomly grabbed audio from the web and texts taken from websites, chat rooms, message boards etc. This results in an endless open edition of unique cinematic works in real-time. By combining the language of cinema with global real-time data technologies, this work is one of the first new media artworks to re-imagine the internet in a different sensory form as a cinematic space. ‘Short Films about Flying’ was developed over the course of a year in collaboration with Jon Thomson (Slade) to explore how the concept of the found object can be re-conceptualised as the found data stream. It has informed other research by Craighead and Thomson, such as the web project http://www.templatecinema.com, and began an examination into relationships between montage and live virtual data –an early example of which would be ‘Flat Earth’, an animated work developed for Channel 4 in 2007, with the production company Animate. This piece has been cited in discussions on new media art, as a significant example of artworks using a database as their determining structure. It was acquired for the Arts Council Collection and has continuously toured significant international venues over the last 4 years. Citations include:’ Time and Technology’ by Charlie Gere (2006); 'The Wrong Categories' by Kris Cohen (2006); 'Networked Art - Practices and Positions' edited by Tom Corby (Routledge 2005) and Grayson Perry in The Times (9.8.06).