- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Dudle: Mehrseitig sichere Web 2.0-Terminabstimmung / Dudle: Multilateral Secure Web 2.0-Event SchedulingKellermann, Benjamin 21 December 2011 (has links) (PDF)
Es existiert eine Vielzahl an Web 2.0-Applikationen, welche es einer Gruppe von Personen ermöglichen, einen gemeinsamen Termin zu finden (z. B. doodle.com, moreganize.ch, whenisgood.net, agreeadate.com, meetomatic.com, etc.) Der Ablauf ist simpel: Ein Initiator legt eine Terminumfrage an und schickt den Link zu der Umfrage zu den potentiellen Teilnehmern. Nachdem jeder Teilnehmer der Anwendung seine Verfügbarkeiten mitgeteilt hat, kann anhand dieser Informationen ein Termin gefunden werden, der am besten passt.
Maßnahmen um die Vertraulichkeit und Integrität der Daten zu schützen finden in allen bestehenden Applikationen zu wenig Beachtung. In dieser Dissertation wurde eine Web 2.0-Applikation entwickelt, welche es zulässt Terminabstimmungen zwischen mehreren Teilnehmern durchzuführen und dabei möglichst wenige Vertrauensannahmen über alle Beteiligten zu treffen. / Applications which help users to schedule events are becoming more and more important. A drawback of most existing applications is, that the preferences of all participants are revealed to the others.
We propose a schemes, which are able to schedule events in a privacy-enhanced way. In addition, Dudle, a Web 2.0 application is presented which implements these schemes.
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Linklets - Formal Function Description and Permission Model / Linklets - formale Funktionsbeschreibung und RechtemodellKöhler, Marcus 06 February 2012 (has links) (PDF)
Linklets are location-independent web services, which consume and produce Linked Data resources. These resources form a web of data - the semantic web - that is an abstraction of the web 2.0. However, enterprises are reluctant to provide valuable Linked Data resources due to missing financial stimuli. Operations are not representable in the semantic web.
Linklets aim to solve both problems. Previous work developed a prototype. The goal of this thesis is to enhance it by a component model, a formal description and a permission model. A business model has to be developed.
This thesis follows a bottom-up approach. The formalization of the Linklet concept creates a foundation. Then, an improved architecture and its reference implementation are studied. It is evaluated by tests, show cases and economic considerations.
The resulting component system is based on web-service component systems, while a sandbox concept is the core of the permission model. The formal description shows limits of OWLs open world assumption. A platform leader strategy is the foundation for the business model.
In conclusion, the advantages of the Linklet concept provide a way to enhance and monetize the value of the semantic web. Further research is required; the practical use has to be considered.
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