Browsing Articles by Issue Date

Now showing items 41-60 of 842

    • Minimum Variance Signal Selection for Aorta Radius Estimation Using Radar 

      Solberg, Lars Erik; Hamran, Svein-Erik; Berger, Tor; Balasingham, Ilangko (2010)
      This paper studies the optimum signal choice for the estimation of the aortic blood pressure via aorta radius, using a monostatic radar configuration. The method involves developing the Cramér-Rao lower bound (CRLB) for a ...

    • Range and Doppler walk in DVB-T based Passive Bistatic Radar 

      Christiansen, Jonas Myhre; Olsen, Karl Erik (2010)
      This paper analyzes the effects of range and Doppler walk for a Digital Video Broadcast - Terrestrial based Passive Bistatic Radar of both simulated and experimental data. Range and Doppler walk cause energy dispersal ...

    • Consequence assessment of indoor dispersion of sarin-A hypothetical scenario 

      Endregard, Monica; Reif, Bjørn Anders Pettersson; Vik, Thomas; Busmundrud, Odd (2010)
      The objective of this study is to provide a hypothetical scenario of indoor dispersion of the highly toxic nerve agent sarin in a large building, which can be used as a starting point for discussion, planning, training and ...

    • Optical parametric oscillators with high pulse energy and beam quality 

      Rustad, Gunnar; Farsund, Øystein; Arisholm, Gunnar (2010)
      A new method for obtaining high beam quality from high pulse energy optical parametric oscillators (OPOs) is demonstrated. By using different nonlinear crystals that have walk-off in orthogonal directions but are type 2 ...

    • Robust Web Services in Heterogeneous Military Networks 

      Lund, Ketil; Skjervold, Espen; Johnsen, Frank Trethan; Hafsøe, Trude; Eggen, Anders (2010)
      NATO Network Enabled Capability is firstand foremost about achieving better interactionbetween the different actors involved in militaryoperations. This implies more efficient exchangeof information. Consequently, the NATO ...

    • Introducing Randomness into First-Order and Second-Order Deterministic Differential Equations 

      Moxnes, John Fredrik; Hausken, Kjell (2010)
      We incorporate randomness into deterministic theories and compare analytically and numerically some well-known stochastic theories: the Liouville process, the Ornstein-Uhlenbeck process, and a process that is Gaussian and ...

    • Calprotectin (S100A8/S100A9) and myeloperoxidase: Co-regulators of formation of reactive oxygen species 

      Bøyum, Arne; Skrede, Knut Kristian; Myhre, Oddvar; Tennfjord, Vivi-Ann; Neurauter, Christine Gran; Tolleshaug, Helge; Knudsen, Eirunn; Opstad, Per Kristian; Bjørås, Magnar; Benestad, Haakon Breien (2010)
      Inflammatory mediators trigger polymorphonuclear neutrophils (PMN) to produce reactive oxygen species (ROS: O2-, H2O2, ∙OH). Mediated by myeloperoxidase in PMN, HOCl is formed, detectable in a chemiluminescence (CL) assay. ...

    • Framtiden for russisk verneplikt 

      Andresen, Rolf-Inge Vogt (2010)
      Russia is currently implementing the most comprehensive reform of its Armed Forces since the 1920s – «the Serdiukov reforms». Conscription will be maintained at the same time as important parts of the Armed Forces will be ...

    • Temperature dependent lattice constant of Al0.90Ga0.10AsySb1-y 

      Breivik, Magnus; Nilsen, Tron Arne; Myrvågnes, Geir; Selvig, Espen; Fimland, Bjørn-Ove (2010)
      Using x-ray diffraction, the in-plane and out-of-plane lattice constants of Al0.90Ga0.10AsySb1−y epilayers grown on GaSb and GaAs substrates were determined between 30 and 398 °C for y = 0.003–0.059. The bulk lattice ...

    • Semantic Service Discovery for Interoperability in Tactical Military Networks 

      Johnsen, Frank Trethan; Rustad, Marianne; Hafsøe, Trude; Eggen, Anders; Gagnes, Tommy (2010)
      Interoperability, both inter- and intra-nation, is a main concern when attempting to fully realize NATO Network Enabled Capabilities (NNEC). The NNEC vision implies an information infrastructure that supports prioritized access ...

    • Trace determination of sulphur mustard and related compounds in water by headspace-trap gas chromatography-mass spectrometry 

      Røen, Bent Tore; Unneberg, Erik; Tørnes, John Aasulf; Lundanes, Elsa (2010)
      A method for trace determination of sulphur mustard (HD) and some of its cyclic decomposition compounds in water samples has been developed using headspace-trap in combination with gas chromatography-mass spectrometry ...

    • Headspace-trap gas chromatography-mass spectrometry for determination of sulphur mustard and related compounds in soil 

      Røen, Bent Tore; Tørnes, John Aasulf; Lundanes, Elsa; Unneberg, Erik (2010)
      Methods for trace determination of sulphur mustard (HD) and some related cyclic sulphur compounds in soil samples have been developed using headspace-trap in combination with gas chromatography-mass spectrometry (GC-MS). ...

    • Phase-coherent communications without explicit phase tracking 

      Song, Heechun; Hodgkiss, William S.; Van Walree, Paul (2010)
      Phase-coherent communications typically requires a reliable phase-tracking algorithm. An initial phase estimate with training symbols allows a receiver to compensate for a motion-induced Doppler shift. Following the training ...

    • Stochastic Theories and Deterministic Differential Equations 

      Moxnes, John Fredrik; Hausken, Kjell (2010-05)
      We discuss the concept of “hydrodynamic” stochastic theory, which is not based on the traditional Markovian concept. A Wigner function developed for friction is used for the study of operators in quantum physics, and for ...

    • A non-singular horizontal position representation 

      Gade, Kenneth (2010-07-03)
      Position calculations, e.g. adding, subtracting, interpolating, and averaging positions, depend on the representation used, both with respect to simplicity of the written code and accuracy of the result. The latitude/longitude ...

    • Interferometric Synthetic Aperture Sonar in Pipeline Inspection 

      Hansen, Roy Edgar; Sæbø, Torstein Olsmo; Callow, Hayden John; Hagen, Per Espen (2010-10-14)
      Accurate and reliable inspection of subsea pipelinestraditionally requires the use of multiple sensors, which againhave different requirements for range and geometry. This makespipeline inspection a time consuming and ...

    • Geolocation and Stereo Height estimation Using TerraSAR-X Spotlight Image Data 

      Eldhuset, Knut; Weydahl, Dan Johan (2011)
      We have studied the geographic position of several high-resolution spotlight TSX images by investigating the location of deployed radar corner reflectors. Results show that the geolocation accuracy is better than the ...

    • Enantioselectivity, swelling and stability of 4-hydroxyprolinol containing acrylic polymer beads in the asymmetric reduction of ketones 

      Thvedt, Thor Håkon Krane; Kristensen, Tor Erik Holt; Sundby, Eirik; Hansen, Tore; Hoff, Bård Helge (2011)
      A new 4-hydroxy-α,α-diphenyl-l-prolinol containing polymethacrylate, prepared without chromatography by a large scale adaptable synthesis, has been evaluated as a catalyst in the asymmetric reduction of 1-arylethanones. ...

    • A Framework for Authentication in NBD Tactical ad hoc networks 

      Hegland, Anne Marie; Winjum, Eli; Hedenstad, Ole-Erik (2011)
      Network-based defense (NBD) and the all-IP network make authentication ever more important. However, a generally accepted and comprehensive authentication suite is lacking. This work is a step toward filling the gap. The ...

    • Severe gunshot injuries in a porcine model: impact on central markers of innate immunity 

      LUNDELAND, BÅRD; Gundersen, Yngvar; Opstad, Per Kristian; Thrane, Ingjerd; Zhang, Ying; Olaussen, Richard W; Vaagenes, Per (2011)
      Background The mechanisms behind lipopolysaccharide (LPS) tolerance remain obscure. LPS signals through Toll-like receptor 4 (TLR4) and severe trauma/haemorrhage may influence binding and signalling through this receptor, ...