Browsing Articles by Title
Now showing items 268-287 of 843
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The FESTER field trial
(2016)An overview is given of the First European – South African Transmission ExpeRiment (FESTER), which took place in South Africa, over the False Bay area, centered around Simon’s Town. The experiment lasted from April 2015 ... -
FESTER: a propagation experiment, overview and first results
(2016)A long term field trial called FESTER (First European South African Transmission Experiment) has been conducted by an international collaboration of research organizations during the course of almost one year at False Bay, ... -
Few-cycle pulse generation by double-stage hybrid multi-pass multi-plate nonlinear pulse compression
(2023-02-10)Few-cycle pulses present an essential tool to track ultrafast dynamics in matter and drive strong field effects. To address photon-hungry applications, high average power lasers are used which, however, cannot directly ... -
A field-based method for evaluating thermal properties of static and mobile camouflage
(2018)Reliable and realistic methods for assessment of thermal infrared signature properties for military purposes are important. With a basis in ongoing developments of imaging technologies, especially towards mass markets, ... -
Field-Testing of High-Level Decentralized Controllers for a Multi-Function Drone Swarm
(2018)This paper describes the results of initial field testing of a high-level decentralized controller for a swarm of multi-rotor drones. This controller allows the intuitive implementation of a wide variety of swarm behaviors. ... -
Fighting on behalf of the state—the issue of pro-government militia autonomy in the Donbas war
(2019-01-04)This study investigates the degree of autonomy the Ukrainian volunteer battalions had from the regular forces during the war in Donbas. The findings indicate that the degree of autonomy was high and that in particular, ... -
The final destination: building test bed apps for DIL environments
(2015)Recent years have seen a massive growth in the everyday use of smartphones and tablet (here called smart mobile devices or SMDs) and a turn towards app based software to connect to cloud based services. This has had a huge ... -
The First GAEN-Based COVID-19 Contact Tracing App in Norway Identifies 80% of Close Contacts in “Real Life” Scenarios
(2021-11-17)The coronavirus disease 2019 (COVID-19) response in most countries has relied on testing, isolation, contact tracing, and quarantine (TITQ), which is labor- and time-consuming. Therefore, several countries worldwide launched ... -
First in situ measurement of the vertical distribution of ice volume in a mesospheric ice cloud during the ECOMA/MASS rocket-campaign
(2009)We present in situ observations of mesospheric ice particles with a new particle detector which combines a classical Faraday cup with the active photoionization of particles and subsequent detection of photoelectrons. Our ... -
First indications that northern bottlenose whales are sensitive to behavioural disturbance from anthropogenic noise
(2015)Although northern bottlenose whales were the most heavily hunted beaked whale, we have little information about this species in its remote habitat of the North Atlantic Ocean. Underwater anthropogenic noise and disruption ... -
Flow noise reduction from superhydrophobic surfaces
(2012)This work investigates how a highly (super)hydrophobic surface can be used to reduce turbulence-generated drag and noise on a towed streamer cable. The work is done by analyzing full-scale drag and flow noise measurements ... -
Forest classes and tree cover gradient: tick habitat in encroached areas of southern Norway
(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
(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
(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
(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
(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
(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
(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
(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 ...