Institutt for informatikk: Recent submissions

Now showing items 761-769 of 769

    • The Pesto project. Goals and motivation 

      Dillema, Feike W.; Stabell-Kulø, Tage (Research report; Forskningsrapport, 2001-06)
      Pesto is a storage system geared towards a computing model where private machines play a pivotal role. Sharing of data is crucial, both between partners, and between the many devices owned by individual users. Replication is the only sensible means to provide ubiquitous access to private data. However, without provisions, replication endangers privacy by enlarging the Trusted Computing Base. The ...

    • Authorization and access control in a distributed file repository 

      Arild, Ronny; Stabell-Kulø, Tage (Research report; Forskningsrapport, 1999-01-18)
      A distributed file repository is described. It supports interaction between different machines used by a single user, as well as between users that share data. Files can be replicated and consistency will be maintained, or files can be shipped (copied) to a remote site. As with more traditional systems, the servers are trusted not to leak information. However, the rôle servers play is not as much ...

    • Some hints on the theory and practice of authentication in distributed systems 

      Stabell-Kulø, Tage; Bottoni, Andrea (Research report; Forskningsrapport, 2003-05-17)
      Authentication in Distributed Systems: Theory and Practice provides considerable insight. However, it can be hard to read, as many details are left out, probably for brevity; it is still 45 pages long. We provide detailed explanations of tricky points.

    • TOS: A Kernel of a Distributed Systems Management System 

      Marzullo, Keith; Lauvset, Kåre J.; Johansen, Dag (Research report; Forskningsrapport, 2000-03-02)
      Distributed systems are becoming harder to manage, in part because the uses we put to distributed systems are rapidly changing. Hence, the software used to manage a distributed system needs to be flexible enough to accommodate these new uses. It also has to be secure enough to not allow unauthorized changes to be made to the system. We present a library and a kernel that supports the management ...

    • Adding mobility to non-mobile web robots 

      Sudmann, Nils P.; Johansen, Dag (Research report; Forskningsrapport, 2000)
      In this paper we will show that it is possible to combine mobile agent technology with existing non-mobile data mining applications. The motivation for this is the advantage mobile agents offer in moving the computation closer to the data in a distributed system. This can save bandwidth and increase performance when the data is condensed as a result of data mining.

    • Kontekstsensitiv tilpasning av interaksjonsmodi mot mobile terminaler 

      Henriksen, André (Master thesis; Mastergradsoppgave, 2003-12-15)
      Denne oppgaven ser på mulighetene for å bruke kontekstinformasjon for å kunne tilpasse interaksjonsmodi mot mobile terminaler, spesielt mobiltelefoner. Hensikten er å illustrere hvordan brukere av et transportselskap automatisk kan motta beskjeder om forsinkelser på bussavganger han/hun er interessert i, samt andre beskjeder fra transportselskapet. Brukere skal altså slippe å kjenne til vanlige ...

    • p-SARS: Peer-to-peer search for a recommender system 

      Devik, Rune (Master thesis; Mastergradsoppgave, 2003-12-15)
      WAIF started out in 2002 and the overall goal is to make the computers automatically search for relevant information based on the user’s preferences, and to push this information directly to the user wherever he/she is and to whatever device he/she has available. In other words, make the machines serve us, with as little human interaction as possible. This thesis focuses on a specific part of this ...

    • FAT: A framework for automated regression testing of protocol stacks 

      Nilsen, Karl Magnus (Master thesis; Mastergradsoppgave, 2003-12-15)
      Software systems today are becoming larger and more complex, resulting in a growing need for good and efficient testing routines. An approach used by several software developers is to automate the test process. Test automation has the benefits that it reduces the time of the testing process and that automated tests are more accurate and precise than manual tests. <br /><br /> Manufacturers who ...

    • Frag: A distributed approach to display wall gaming 

      Grammeltvedt, Åsmund (Master thesis; Mastergradsoppgave, 2006-06-01)
      Computer games with distributed functionality, such as most modern multiplayer games, provide a rich environment in which one can experiment with high performance distribution of computational and graphical resources. Their extremely high requirements for processing power and consistent visual output create a platform with unique demands. Current tiled display walls provide, as a consequence of ...