Now showing items 279-298 of 841

    • Forest classes and tree cover gradient: tick habitat in encroached areas of southern Norway 

      Vanwambeke, Sophie O; van Doninck, J; Artois, J; Davidson, Rebecca K.; Meyfroidt, P; Jore, Solveig (2015-12-21)
      Forest, in particular deciduous forest, is a key element in determining areas with a high probability of tick presence. The way forest is generally monitored may be ill suited to some landscapes where Ixodes ricinus is ...
    • Formalizing swarm security 

      Strand, Martin (2022-01-24)
      Cheap, capable processors are becoming readily available, and these are being deployed to a wide variety of applications, ranging from internet-enabled refrigerators to swarms of specialised drones. As often is the case ...
    • Formation of a large submarine crack during the final stage of retrogressive mass wasting on the continental slope offshore northern Norway 

      Laberg, Jan Sverre; Baeten, Nicole Jeanne; Lågstad, Petter Arthur; Forwick, Matthias; Vorren, Tore Ola (2013)
      High-resolution swath-bathymetry data integrated with sub-bottom profiles and single-channel seismics reveal an 18 km long, up to 1000 m wide and 10–15 m deep crack located approx. 4 km upslope from a slide scar on the ...
    • Formation of Range-Doppler Maps Based on Sparse Reconstruction 

      Akhtar, Jabran; Olsen, Karl Erik (2016)
      This paper presents an application of compressed sensing in a pulsed system, such as a radar or sonar to form range-Doppler maps. Instead of transmitting a train of pulses, we portrait a system where the pulse emission ...
    • Formation Path Following Control of Underactuated USVs 

      Eek, Åsmund; Pettersen, Kristin Ytterstad; Ruud, Else-Line Malene; Krogstad, Thomas Røbekk (2021-06-30)
      This paper proposes a formation control method for two underactuated unmanned surface vessels (USVs) to follow curved paths in the presence of ocean currents. By uniting a line-of-sight (LOS) guidance law and the ...
    • Fracture networks in sea ice 

      Vevatne, Jonas Nesland; Rimstad, Eivind; Hope, Sigmund Mongstad; Korsnes, Reinert; Hansen, Alex (2014)
      Fracturing and refreezing of sea ice in the Kara sea are investigated using complex network analysis. By going to the dual network, where the fractures are nodes and their intersections links, we gain access to topological ...
    • Fragmentation of an armour piercing projectile after impact on composite covered alumina tiles 

      Rahbek, Dennis Bo; Johnsen, Bernt Brønmo (2019-11-18)
      In a typical body armour system, a hard armour plate is often used in conjunction with a soft ballistic panel. The main purpose of the armour plate is to erode and fragment an impacting projectile, such as 7.62 mm armour ...
    • 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 ...
    • A framework for automatic behavior generation in multi-function swarms 

      Engebråten, Sondre Andreas; Moen, Jonas; Yakimenko, Oleg A.; Glette, Kyrre (2020)
      Multi-function swarms are swarms that solve multiple tasks at once. For example, a quadcopter swarm could be tasked with exploring an area of interest while simultaneously functioning as ad-hoc relays. With this type of ...
    • 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 ...
    • Freezing Unicast Paths in Sensor Swarms 

      Larsen, Erlend; Vågsether, Håkon Solevåg; Landmark, Lars (2022-09-22)
      Drone swarms have great potential to convey sensor information. However, a swarm may have a very high degree of topology dynamics. This impedes the sensor data distribution from the sensor node to consumers which are ...
    • Fremtidens autonome ubemannede kapasiteter i Sjøforsvaret 

      Hareide, Odd Sveinung; Relling, Tore; Pettersen, André; Sauter, Alexander; Mjelde, Frode Voll; Ostnes, Runar (2018)
      Sjøforsvaret har en lang historie med å utnytte ny teknologi for å øke den operative evne. Denne artikkelen tar sikte på å gi leseren økt forståelse av hva autonomi er, og hvordan dette kan nyttiggjøres i Sjøforsvaret. ...
    • Frequency agility radar with overlapping pulses and sparse reconstruction 

      Akhtar, Jabran; Olsen, Karl Erik (2018)
      The use of frequency agility has a proven track record in radar systems. Altering the radar carrier frequency over shorter intervals improves the detection capabilities for slowly fluctuating targets and increases jamming ...
    • From F-16 to F-35 - Optimizing the Training of Pilots in the Royal Norwegian Air Force 

      Fauske, Maria Fleischer; Hoff, Erlend Øby (2016)
      The Norwegian Armed Forces will soon make the largest investment in its history. It plans to spend $8 billion to replace the Royal Norwegian Air Force’s existing fleet of F-16 aircraft with 52 new F-35 aircraft. The Norwegian ...
    • From food defence to food supply chain integrity 

      Davidson, Rebecca K.; Antunes, Wilson; Madslien, Elisabeth Henie; Belenguer, José; Gerevini, Marco; Torroba Perez, Tomas; Prugger, Raffaello (2017)
      Purpose Consumer confidence in the European food industry has been shaken by a number of recent scandals due to food fraud and accidental contamination, reminding the authors that deliberate incidents can occur. Food ...
    • Fuel cell systems for long-endurance autonomous underwater vehicles – challenges and benefits 

      Weydahl, Helge; Gilljam, Martin; Lian, Torleif; Johannessen, Tom Cato; Holm, Sven Ivar; Hasvold, Jon Øistein (2019)
    • Full characterization of spatial coregistration errors and spatial resolution in spectral imagers 

      Torkildsen, Hans Erling; Skauli, Torbjørn (2018)
      For multi- and hyperspectral imagers, the integrity of the spectral information depends critically on the spatial coregistration between bands. There is at present no commonly accepted way to fully specify coregistration ...
    • Fully adaptive radar for track update-interval control 

      Christiansen, Jonas Myhre; Olsen, Karl Erik; Smith, Graeme E. (2018)
      A fully adaptive radar framework has been proposed in recent publications, and this paper will implement the framework in an adaptive update rate application for a tracking radar. A cost function is developed to balance ...
    • Fusing of a continuous output PDR algorithm with an ultrasonic positioning system 

      Thio, Vincent Martello Kwie Hoe; Aparicio, Joaquin; Ånonsen, Kjetil Bergh; Bekkeng, Jan Kenneth; Booij, Wilfred (2021-12-09)
      The availability of inertial navigation sensors in smartphones has facilitated the development of pedestrian dead reckoning (PDR) models on a large scale. These models often consist of a step detection algorithm combined ...
    • The Future of Jihadism in Europe: A Pessimistic View 

      Hegghammer, Thomas (2016-12)
      This article presents a ten-year forecast for jihadism in Europe. Despite reaching historically high levels in recent years, violent Islamist activity in Europe may increase further over the long term due to four macrotrends: ...