• 3D visualization of weather forecasts and topography 

      Skotnes, Harald; Hartvigsen, Gunnar; Johansen, Dag (Research report; Forskningsrapport, 1994-09)
      Advances in computing power and graphics have increased the use of graphics in weather forecasting. This includes 3D animation sequences and geographical information systems. The paper addresses the main problems and ...
    • Access control protocol with node privacy in wireless sensor networks 

      Kumar, Pardeep; Gurtov, Andrei; Iinatti, Jari; Sain, Mangal; Ha, Hoai Phuong (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-15)
      For preventing malicious nodes joining wireless sensor networks (WSNs), an access control mechanism is necessary for the trustworthy cooperation between the nodes. In addition to access control, recently, privacy has been ...
    • 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 ...
    • Appendix E Telemedisinske løsninger i maritime operasjoner og redningstjeneste 

      Woldaregay, Ashenafi Zebene; Hartvigsen, Gunnar; Walderhaug, Ståle (Research report; Forskningsrapport, 2016)
      Folk som jobber i maritime miljø har ikke enkel tilgang til sentrale helsetjenester, og det gjelder spesielt for sjøfolk som arbeider i arktiske områder. Selv om telemedisin har vært en suksess på land, har telemedisin kun ...
    • An approach towards an agent computing environment 

      Marzullo, Keith; Johansen, Dag; Lauvset, Kåre J. (Research report; Forskningsrapport, 1998)
      We devise a mobile agent middleware architecture for supporting distributed applications in a wide-area network. The architecture provides a structural framework for functional components that are needed to support mobile ...
    • Arctic beans containers composition of non-functional services using composition filters 

      Yang, Jie; Blair, Gordon S.; Andersen, Anders (Research report; Forskningsrapport, 2005)
      It is becoming clear that modern middleware platforms must provide both deploy-time configuration and run-time reconfiguration to accommodate rapid changing requirements and also to be able to operate in dynamic environments. ...
    • 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, ...
    • Building agent applications using wrappers 

      Sudmann, Nils P.; Johansen, Dag (Research report; Forskningsrapport, 2001-01-11)
      For the past seven years, the TACOMA project has investigated software support for mobile agents. Several prototypes have been developed, with experiences in distributed applications directing the effort. This paper presents ...
    • Continuation-passing enactment of distributed recoverable workflows 

      Weihei, Yu; Yang, Jie (Research report; Forskningsrapport, 2006)
      Scalability, reliability and adaptability are among the key requirements for the enactment of distributed workflows. In addition, system resources should be efficiently utilized. Central workflow engines and static analysis ...
    • Cooperation through information interchange in StormCast 

      Hartvigsen, Gunnar; Johansen, Dag (Research report; Forskningsrapport, 1990)
      This paper addresses the cooperation between different expert system modules in a networking environment. StormCast - a distributed artificial intelligence application for severe storm forecasting is used as a case to ...
    • Data-intensive computing infrastructure systems for unmodified biological data analysis pipelines 

      Bongo, Lars Ailo; Pedersen, Edvard; Ernstsen, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-18)
      Biological data analysis is typically implemented using a deep pipeline that combines a wide array of tools and databases. These pipelines must scale to very large datasets, and consequently require parallel and distributed ...
    • A Declarative Profile Model for Qos negotiation 

      Hanssen, Øyvind (Research report; Forskningsrapport, 2005-12)
      In this report we define the semantics of a language for dynamic QoS expressions which can be evaluated at run-time for conformance. We define how expressions can be constructed from atomic expressions termed ’basic profiles’ ...
    • DeltaTree: A Locality-aware Concurrent Search Tree 

      Umar, Ibrahim; Anshus, Otto; Ha, Hoai Phuong (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-15)
      Like other fundamental abstractions for high-performance computing, search trees need to support both high concurrency and data locality. However, existing locality-aware search trees based on the van Emde Boas layout ...
    • DeltaTree: A Practical Locality-aware Concurrent Search Tree 

      Umar, Ibrahim; Anshus, Otto; Ha, Hoai Phuong (Research report; Forskningsrapport, 2013)
      As other fundamental programming abstractions in energy-e cient computing, search trees are expected to support both high parallelism and data locality. However, existing highly-concurrent search trees such as red-black ...
    • Description of spatio-temporal gait parameters in elderly people and their association with history of falls: Results of the population-based cross-sectional KORA-Age study 

      Thaler-Kall, Kathrin; Peters, Annette; Thorand, Barbara; Grill, Eva; Autenrieth, Christine S.; Horsch, Alexander; Meisinger, Christa (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-25)
      Background: In this epidemiological study we described the characteristics of spatio-temporal gait parameters among a representative, population-based sample of 890 community-dwelling people aged 65 to 90 years. In addition, ...
    • Design Principles for Isolation Kernels 

      Kvalnes, Åge; Johansen, Dag; Valvåg, Steffen (Research report; Forskningsrapport, 2011)
    • Digital Chronofiles of Life Experience 

      Sødring, Thomas; Johansen, Dag; Gurrin, Cathal (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
    • Digital Chronofiles of Life Experience 

      Gurrin, Cathal; Johansen, Håvard; Sødring, Thomas; Johansen, Dag (Chapter; Bokkapittel, 2015-02-28)
      Technology has brought us to the point where we are able to digitally sample life experience in rich multimedia detail, often referred to as lifelogging. In this paper we explore the potential of lifelogging for the ...
    • An efficient bill-of-materials algorithm 

      Khalaila, Ahmad; Eliassen, Frank (Research report; Forskningsrapport, 1997-04)
      A large class of linear recursive queries compute the bill-of-materials of database relations.This paper presents a novel algorithm that computes the bill-of-materials of its argument's (database) relation. The algorithm ...
    • Efficient bill-of-materials algorithms 

      Khalaila, Ahmad; Beeri, Catriel; Eliassen, Frank (Research report; Forskningsrapport, 1996-09-01)
      It has been shown that every linearly recursive database query can be expressed as a transitive closure possibly preceded and followed by relational algebraic operations. A large class of such queries computes the ...