Now showing items 1211-1230 of 2860

    • Intracavity trace molecular detection with a broadband mid-IR frequency comb source 

      Haakestad, Magnus Willum; Lamour, Tobias P.; Leindecker, Nick; Marandi, Alireza; Vodopyanov, Konstantin L. (2013)
      Ultrasensitive detection of methane, isotopic carbon dioxide, carbon monoxide, formaldehyde, acetylene, and ethylene is performed in the spectral range 2.5–5 μm using intracavity spectroscopy in broadband optical parametric ...
    • 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 ...
    • Introducing the Jihadi Plots in EuropeDataset (JPED) 

      Nesser, Petter (2023-02-21)
      The article introduces a new dataset on terrorist attack activity by jihadis in Western Europe. The dataset was built over nearly two decades at the Norwegian Defence Research Establishment. It records not only attacks ...
    • Introduction to ionization pin probes to measure detonation velocity 

      Nevstad, Gunnar Ove (2015-02-09)
      Detonation velocity can be measured by different methods. Earlier two probes of isolated twisted copper wires have been used to measure the time the detonation front uses for a predefined distance. The drawback with this ...
    • Introduction to shock-response spectra 

      Andreassen, Øyvind (2020-11-21)
      A shock is a sudden and violent event. There are many examples of shocks, from earth quakes and explosions to controlled mechanical transient processes. In this report, we discuss theory, modeling and analysis methods ...
    • An introduction to the Bluetooth technology and its applications 

      Hagen, Janne Merete; Pham, Vinh (2015-05-21)
      Blåtann (Bluetooth) er innebygget i ulike produkter. Teknologien er anvendt i helseprodukter, i forretningsprodukter for eksempel logistikk, og selv i sikkerhetsprodukter. I mange tilfeller kan slike blåtannenheter kople ...
    • Introduction: Training is more important than technology (for performance in the cold) 

      Friedl, Karl E.; Hasselstrom, Henriette; Kingma, Boris R.M.; Norheim, Arne Johan; Ojanen, Tommi; Sullivan-Kwantes, Wendy; Teien, Hilde Kristin; White, Graham (2023-07-27)
      After more than 50 years of studying soldiers in the cold, we are well past the phase of defining the unique problems; the research requirements are known but the solutions have been slow in coming. This requires iterative ...
    • Introduksjon til simulering 

      Skjelland, Espen; Feet, Else Helene; Frihagen, Jon (1994)
    • Intrusion tolerant systems 

      Fongen, Anders (2007)
      Security intrusions and successful attacks on computer systems will occur regardless of the quality of the control and protection systems in use. It is therefore necessary to build computer systems that offer essential ...
    • Inverse modeling of penetration into 12.7 cartridges 

      Moxnes, John F.; Nilssen, Jan R. (2002)
      In this article a study of the forces caused by penetration of steel penetrators into cartridges of brass has been carried out. Experimental data was compared with simulations using the Nike-2D code and with solutions ...
    • Inverse scattering of dispersive stratified structures 

      Skaar, Johannes; Haakestad, Magnus Willum (2012)
      We consider the inverse-scattering problem of retrieving the structural parameters of a stratified medium consisting of dispersive materials, given knowledge of the complex reflection coefficient in a finite frequency ...
    • Investigating robustness of adversarial camouflage (AC) for naval vessels 

      Løkken, Kristin; Aurdal, Lars; Brattli, Alvin Andreas; Palm, Hans Christian (2020-09-20)
      The use of camouflage is widespread in the biological domain, and has also been used extensively by armed forces around the world in order to make visual detection and classification of objects of military interest ...
    • Investigation and risk assessment of ships loaded with chemical ammunition scuttled in Skagerrak 

      Tørnes, John Aasulf; Voie, Øyvind Albert; Ljønes, Marita; Opstad, Aase Mari; Bjerkeseth, Leif Haldor; Hussain, Fatima (2002)
      The Norwegian authorities gave in 1945 permission to scuttle ships loaded with captured chemical ammunition on board in an area approximately 14 km X 4 km in size, 25 nautical miles south-east of Arendal. The total amount ...
    • Investigation of conductive adhesive in harsh environment - the ReMi Fuze Case 

      Gakkestad, Jakob (2012-03-12)
      FFI and Nammo have participated in the project ”Fine Pitch Interconnect of Microelectronics and Microsystems for use in Rough Environments” (ReMi). The project has to a large extent been founded by the Norwegian Research ...
    • Investigation of new orexin 2 receptor modulators using in silico and in vitro methods 

      Janockova, Jana; Dolezal, Rafael; Nepovimova, Eugenie; Kobrlova, Tereza; Benkova, Marketa; Kuca, Kamil; Konecny, Jan; Mezeiova, Eva; Melikova, Michaela; Hepnarova, Vendula; Ring, Avi; Soukup, Ondrej; Korabecny, Jan (2018)
      The neuropeptides, orexin A and orexin B (also known as hypocretins), are produced in hypothalamic neurons and belong to ligands for orphan G protein-coupled receptors. Generally, the primary role of orexins is to act as ...
    • Investigation of Theoretical Models for the Elastic Stiffness of Nanoparticle-Modified Polymer Composites 

      Thorvaldsen, Tom; Johnsen, Bernt Brønmo; Olsen, Torbjørn; Hansen, Finn Knut (2015)
      Mathematical models are investigated and suggested for the calculation of the elastic stiffness of polymer nanocomposites. Particular emphasis is placed on the effect on the elastic stiffness from agglomerates and the ...
    • Investment cost escalation – an overview of the literature and revised estimates 

      Hove, Kjetil; Lillekvelland, Tobias (2016)
      This article presents an overview of literature and previous estimates of defence specific investment cost escalation (ICE). ICE, the cost increase between two generations of a weapon system, can place a heavy strain on ...
    • (Invited) Changes in Thermal Stability of Cyclic Aged Commercial Lithium-Ion Cells 

      Lian, Torleif; Vie, Preben Joakim Svela; Gilljam, Martin; Forseth, Sissel (2019)
      Thermal stability is one of several factors affecting the safety properties of lithium-ion cells. The thermal stability for uncycled cells is well-documented, but the effect of cyclic ageing on thermal stability is far ...
    • Ionosfæreforskning 

      Skogen, Erling (red) (Forsvarets forskningsinstitutt, 2005)
      Studier av ionosfæren har lange tradisjoner i Norge, først og fremst knyttet til nordlyset. Det var Leiv Harang som ledet denne forskningen ved Nordlysobservatoriet i Tromsø. Etter at Forsvarets forskningsinstitutt (FFI) ...
    • Ionospheric influence on X-band radio signals 

      Blix, Tom Arild; Svenes, Knut; Hoppe, Ulf (2003)
      We systematically study the possible effects of the ionosphere on radiowave propagation in the X-band. The quiet ionosphere and various types of ionosphere disturbance are considered. We place special emphasis on high ...