Articles: Recent submissions
Now showing items 61-80 of 900
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Spectral broadening in convex-concave multipass cells
(2023-05-26)Since its first demonstration in 2016, the multi-pass spectral broadening technique has covered impressive ranges of pulse energy (3 µJ – 100 mJ) and peak power (4 MW – 100 GW). Energy scaling of this technique into the ... -
Barents-2.5km v2.0: an operational data-assimilative coupled ocean and sea ice ensemble prediction model for the Barents Sea and Svalbard
(2023-09-22)An operational ocean and sea ice forecast model, Barents-2.5, is implemented for short-term forecasting at the coast off northern Norway, the Barents Sea, and the waters around Svalbard. Primary forecast parameters are sea ... -
Remote Operation of Marine Robotic Systems and Next-Generation Multi-Purpose Control Rooms
(2023-10-08)Since 2017, NTNU’s Applied Underwater Robotics Laboratory has been developing an infrastructure for remote marine/subsea operations in Trondheim Fjord. The infrastructure, named the OceanLab subsea node, allows remote ... -
Tyske reaksjoner på Ukraina-krigen: en ny kraft for transatlantisk samarbeid?
(2023-05-02)Det russiske angrepet på Ukraina 24. februar 2022 er ikke bare et angrep på landets territoriale integritet og 44 millioner innbyggere. Angrepet er også et angrep på den europeiske og transatlantiske sikkerhetsordenen ... -
Improved ballistic limit velocity from filament-wound fibres as composite cover on ceramic tiles
(2023)Hard armour plates are used in body armour for protection against high-velocity threats. The strike face often consists of a single ceramic tile that is covered by a sheet material made of a high-tenacity fibre-composite ... -
A Review of Deep-Learning Methods for Change Detection in Multispectral Remote Sensing Images
(2023-04-16): Remote sensing is a tool of interest for a large variety of applications. It is becoming increasingly more useful with the growing amount of available remote sensing data. However, the large amount of data also leads ... -
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 ... -
MIMO synthetic aperture sonar: Benefits and limitations
(2023-01-16)The use of Multiple Input Multiple Output (MIMO) orthogonally coded waveforms sharing the same bandwidth, has the potential to increase area coverage rate in synthetic aperture sonar (SAS). The disadvantage is cross-talk ... -
Mission command: A self-determination theory perspective
(2023-09-13)It is well documented that leadership behavior influences employees’ motivation. In particular are autonomy-supportive leadership styles associated with desirable outcomes through basic psychological needs satisfaction and ... -
Comprehensive quasi-steady force correlations for compressible flow through random particle suspensions
(2023-04-26)Models for quasi-steady drag, quasi-steady drag variation, and transverse forces for compressible flows through random, fixed, particle suspensions are presented. Correlations are formulated using drag force measurements ... -
Behavioural responses of wild, spawning Atlantic cod (Gadus morhua L.) to seismic airgun exposure
(2023-03-11)Seismic airgun surveys to map petroleum deposits in the seabed may impact behaviour of marine animals over large distances. Understanding whether fish spawning behaviour is affected by this anthropogenic noise source is ... -
Strain rate dependency and fragmentation pattern of expanding warheads
(2014-12-22)For the characterization of the behaviors of a metal material in events like expanding warheads, it is necessary to know its strength and ductility at high strain rates, around 104 e105 /s. The flyer plate impact testing ... -
Improving the decision-making basis by strengthening the risk assessments of unexploded ordnance and explosive remnants of war
(2023-01-15)For many countries, the legacy of armed conflict in the form of unexploded ordnance has a severe impact on society and daily life, as millions of tonnes of explosive remnants of war represent a grave threat to both the ... -
Introduction: Training is more important than technology (for performance in the cold)
(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 ... -
Hvordan Putin ble overbevist om å gå til krig
(2023-05-02)Russlands angrep på Ukraina 24. februar 2022 sjokkerte store deler av verden. Putins misnøye med utviklingen i Ukraina og landets tilnærming til Vesten var velkjent, men de fleste trodde lenge at han ikke ville gå til ... -
Russland og Ukraina – krigsmål, virkemiddelbruk ogmåloppnåelse
(2023-05-02)Det sikkerhetspolitiske landskapet i Europa er i 2022 blitt endret på dramatisk vis. Russlands fullskala invasjon av Ukraina, som startet den 24. februar, utviklet seg raskt til å bli den største og mest ødeleggende krigen ... -
VErsatile RAdar – RFSoC based radar demonstrator for multiple applications
(2022-10-04)The Norwegian Defence Research Establishment (FFI) VeRa (Versatile Radar) is a radar demonstrator for multiple applications based on the 1st generation Xilinx RF System on Chip (RFSoC). This paper describes the hardware ... -
Can the absolute configuration of cyclic peptides be determined with vibrational circular dichroism?
(2023-05-16)Cyclic peptides show a wide range of biological activities, among others as antibacterial agents. These peptides are often large and flexible with multiple chiral centers. The determination of the stereochemistry of molecules ... -
Adaptive phase estimation filter in long range synthetic aperture sonar interferometry
(2023-05-15)Synthetic aperture sonar (SAS) interferometry is a technique for very high resolution imaging and mapping of the seabed. In SAS interferometry, the seabed depth estimation performance is a function of the system, the ... -
High-Resolution Neural Network Processing of LFM Radar Pulses
(2023-05-05)In radar applications, the bandwidth of a transmitted pulse determines the range resolution and the ability to disclose densely spaced targets. The processing of radar signals is often carried out through matched filtering ...