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By Udo Bartlang

Now and then while the IT manager’s ally is platforms consolidation (which is a euphemism for centralisation), it might come slightly as a shock for you that this ebook investigates decentralisation within the context of content material administration platforms. it will possibly look particularly seen that content material will and will be controlled by way of the social gathering who creates and owns the content material, and therefore will be held in a―somewhat―centralised and controlled situation. even though, during the last few years, we now have been witnesses of a few very important tendencies and advancements which demand novel methods of wondering content material administration and even perhaps broader, approximately desktops quite often. First, ongoing enterprise globalization creates average distribution of data at a corp- ate point, in addition to decentralization of regulate over enterprise assets and enterprise methods. altering alliances with companions require ?exible architectures for content material administration that canadapttochangingconstellations, roles, andaccessrights. moment, theneedforoutsourcing and source e?ciency has led to innovations of virtualization, lately culminating within the cloud computing buzzword. Virtualization of content material administration providers calls for - tremely scalable and ?exible underlying info and conversation architectures. some of these suggestions are theoretically and virtually most unlikely to enforce in response to c- tralised client-server architectures. 3rd, we're at the moment experiencing a dramatic shift within the roles of shoppers within the net. the days have long past whilst caliber content material was once purely added by way of publishers and information companies. Wikis and different net 2. zero instruments empower shoppers to supply and submit their own content material.

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From a user’s point of view, implicit fragmentation of content shall be transparent; for example, regarding the allocation of such fragments or the providing of uniform access. However, explicit fragmentation of content shall be enabled and be manageable. 3. Degree of Content Distribution Transparency It is assumed that limitations to specify physical storage locations for content items are not always desirable. A flexible model shall be able to distinguish between content items regarding explicit storage location constraints, but also to employ implicit storage policies.

Using Onion Routing to Secure Peer– to–Peer Supported Business Collaboration. In Paul Cunnigham and Miriam Cunnigham, editors, Exploiting the Knowledge Economy: Issues, Applications and Case Studies, volume 3 of Information and Communication Technologies and the Knowledge Economy, pages 181–188, Nieuwe Hemweg 6B, 1013 BG Amsterdam, The Netherlands, October 2006. IIM, IOS Press. Proceedings of eChallenges e-2006 Conference. Awarded Best Paper! • R¨ udiger Kapitza, Udo Bartlang, Holger Schmidt, and Franz J.

DhtFlex supports self-organization and can act as a generic building block on top of underlying structured P2P overlays. It uses the concept of semantic annotations for resources to classify replicated data: DhtFlex enables efficient support for immutable as well as for optimized atomic operations on mutable data resources: this provides flexible content repository functionality for P2P systems at content item level. 2. 4. Reconfigurable P2P-based Group Communication This thesis presents a reconfigurable P2P-based group communication system as a method to implement P2P service groups.

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