Browsing by Title
Now showing items 2595-2614 of 2874
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A theoretical study of small scale turbulence in stratified turbulent shear flows
(2004)This report examines the postulate of local isotropy in stratified homogeneous turbulence from a theoretical point of view. The study is based on a priori analysis of the evolution equations governing single-point turbulence ... -
Thermal and mechanical analyses for the NSAT-1 phase B study
(2003)The Norwegian Defence Research Establishment (FFI) and industry partners are looking into a possible development of a micro satellite system (NSAT-1) with an X-band vessel-detector antenna to geolocation vessels for ... -
Thermal effects in end-pumped solid state lasers - influence on resonator stability, beam quality, and output power
(2001)A theoretical analysis is given of the magnitudes of thermal effects in end-pumped high-power solid state lasers, and their influence on the laser output characteristics, particularly the beam quality and conversion ... -
Thermal infrared reference sources fabricated from low-cost components and materials
(2018)Mass markets, including mobile phones and automotive sensors, drive rapid developments of imaging technologies toward high performance, low cost sensors, even for the thermal infrared. Good infrared calibration blackbody ... -
Thermal sensor acquisition range estimation
(2021-06-24)There is a large number of factors which may influence the performance of thermal surveillance systems used in any given scenario. Some of the parameters needed for making an accurate performance prediction might be ... -
Thermal stability of NMC442 cathode material studied by accelerating rate calorimetry
(2020-12-07)Lithium ion batteries have developed into one of the most popular secondary batteries on the market today due to high voltage, long lifetime and high energy density. However, lithium ion batteries may have safety issues, ... -
Third-generation femtosecond technology
(2014)Femtosecond pulse generation was pioneered four decades ago using mode-locked dye lasers, which dominated the field for the following 20 years. Dye lasers were then replaced with titanium-doped sapphire (Ti:Sa) lasers, ... -
Thirty years after its foundation – where is al-Qaida going?
(2017)This article presents a framework for understanding al-Qaida, based on a new reading of its thirty-year history. Al-Qaida today is commonly labelled a ‘global insurgency’ or ‘global franchise.’ However, these labels are ... -
The threat of war and domestic restraints to defence reform- how fear of major military conflict changed and did not change the Ukrainian military 2014-2019
(2019-12-19)The annexation of Crimea and the Russia enabled rebellion in Donbas created a need for radical improvements of Ukrainian military capability. This study discusses how different, mostly domestic, reform drivers and reform ... -
Three Future Scenarios for Nordic Military Operations
(2019-05-02)Denne rapporten utgis sammen med FFI-rapport 2019//00046 A Future Nordic Alliance? Prerequisites and Possible Operations. Den rapporten tar til motmæle mot den gjengse oppfatning at nordisk sikkerhetspolitisk- og ... -
Three-dimensional multiple-source focalization in an uncertain ocean environment
(2013)This letter develops a Bayesian focalization approach for three-dimensional localization of an unknown number of sources in shallow water with uncertain environmental properties. The algorithm minimizes the Bayesian ... -
Three-dimensional signal decomposition of infrared image sequences and large-scale non-uniformity analysis
(2020-09-20)The three-dimensional noise model is a methodology to analyse the noise of a thermal imaging sensor, such as an infrared (IR) camera. This allows us to decompose a noisy signal into components and quantify properties such ... -
Three-Site Diversity at Ka-Band Satellite Links in Norway: Gain, Fade Duration and the Impact of Switching Schemes
(2017)Analysis of two years of measurements from a three-site satellite beacon diversity experiment in Norway is presented. The operating frequency was 19.68 GHz, elevation angles were between 21.7° and 22°, and site separations ... -
Thugs or Terrorists? A Typology of Right-Wing Terrorism in Western Europe
(2015)Despite Western Europe’s extensive history of right-wing terrorism, a systematic categorization of key actors and events is lacking. This article aims to narrow this gap by proposing the first empirically derived typology ... -
Tidlige funksjonsendringer i sirkulerende hvite blodlegemer etter skuddskader hos gris - en kartlegging av tidsforløpet i ex vivo fullblod
(2008)Store ytre påkjenninger (skader, store operasjoner, infeksjoner, alvorlige ikke-infeksiøse betennelsesreaksjoner, ekstreme fysiske belastninger) påvirker funksjonen i immunforsvaret. Den umiddelbare effekten på sirkulerende ... -
Tiered Modelling - A Solution to Hyper-Coherent Morphological Models?
(2017)Morphological models that comprise few constraints between parameter values are considered hyper-coherent. A high degree of coherence in a model can be a problem if it results in a large and unwieldy solution space. This ... -
Til sengs med bjørnen? : sikkerhetspolitiske aspekter ved olje- og gassutvinning i Barentshavet
(1999)This report outlines possible security political consequences related to co-operation between Norway and Russia with respect to oil- and gas production in the Barents Sea. There are, however, several barriers to such ... -
Tilleggsdokumentasjon til foreløpige resultater fra FFIs prediksjonsturnering
(2022-01-13)Dette notatet inneholder histogrammer som viser fordelingen til alle avhengige og uavhengige variabler som ligger til grunn for de foreløpige resultatene fra FFIs prediksjonsturnering og sammenligningene av disse med ...