Articles: Recent submissions
Now showing items 141-160 of 900
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Wargaming Dos and Don’ts – Eight Lessons for Planning and Conducting Wargames
(2022-09-19)Since 2015, there has been a resurgence in the use of wargaming in NATO states. But countries with smaller wargaming communities have not seen a corresponding revitalization of the technique. If the interest is there, the ... -
Modeling the effect of random roughness on synthetic aperture sonar image statistics
(2022-09-02)A model has been developed to predict the effect of random seafloor roughness on synthetic aperture sonar (SAS) image statistics, based on the composite roughness approximation–a physical scattering model. The continuous ... -
To Learn or not to Learn: On the Importance of Mode Switching in Educational Wargames
(2022-09-19)Conventional wisdom holds that educational wargames come with certain challenges – factors that can potentially hinder, rather than increase, learning – and that these must be mitigated. In this article, we argue that ... -
Simulation-Supported Wargaming for Assessing Force Structures
(2022-09-19)Wargaming is a key activity for gaining deeper insight into the strengths and weaknesses of future force structures in the course of their development and assessment. For more than a decade, the Norwegian Defence Research ... -
Modelled sonar and target depth distributions for active sonar operations in realistic environments
(2022-09-08)Target detection performance of mid-frequency active sonars depends heavily on both sonar and target depth. For a given target depth, a sonar performance model may help predict a sonar depth that maximizes the detection ... -
Long-Term Measurements of Tropospheric Scintillation at Very Low Elevation Angles - Initial Analysis
(2022-05-11)Four years of scintillation measurements at very low elevation angles at Kjeller, Norway are analyzed and compared with the ITU-R model. One year is at Ka band with an elevation angle of 3°, and three years are of simultaneous ... -
Krigsspill i operasjonsplanlegging: Hva kan datasimuleringer bidra med?
(2022-09-19)Krigsspill er en sentral aktivitet i operasjonsplanlegging for både å utvikle alternative handlemåter og utvikle plan basert på valgt handlemåte. Å gjennomføre krigsspill i et operativt miljø har stramme føringer i forhold ... -
A Computational Protocol for Vibrational Circular Dichroism Spectra of Cyclic Oligopeptides
(2022-08-05)Cyclic peptides are a promising class of compounds for next-generation antibiotics as they may provide new ways of limiting antibiotic resistance development. Although their cyclic structure will introduce some rigidity, ... -
Multiteam Systems Handling Time-Sensitive Targets: Developing Situation Awareness in Distributed and Co-located Settings
(2022-08-04)There is an increasing interest in how to organize operations carried out by multiteam systems (MTS). Large MTS typically operate with a dedicated integration team, responsible for coordinating the operation. We report a ... -
Pro-inflammatory cytokines in cystic glioblastoma: A quantitative study with a comparison with bacterial brain abscesses. With an MRI investigation of displacement and destruction of the brain tissue surrounding a glioblastoma
(2022-07-29)Cystic glioblastomas are aggressive primary brain tumors that may both destroy and displace the surrounding brain tissue as they grow. The mechanisms underlying these tumors’ destructive effect could include exposure of ... -
Using the Pauli Scattering Mechanisms for Analysis of Polarimetric SAR Images from RADARSAT Constellation and TanDEM-X Missions
(2022-07-13)This article describes techniques for extraction of information in polarimetric images from RADARSAT constellation mission (RCM) and TanDEM-X (TDX) and TerraSAR-X (TSX) satellites. Using the boundary conditions of Maxwell's ... -
Challenges of Labelling Unknown Seabed Munition Dumpsites from Acoustic and Optical Surveys: A Case Study at Skagerrak
(2022-05-31)The disposal of unexploded ordnance (UXOs) at sea is a global problem. The mapping and remediation of historic UXOs can be assisted by autonomous underwater vehicles (AUVs) carrying sensor payloads such as synthetic aperture ... -
Modeling FMCW Radar for Subsurface Analysis
(2022-04-05)Determining subsurface properties through ground penetrating radar sounding can be challenging, especially in planetary exploration, where little is known about the terrain and additional observations are limited. Analysis ... -
Effect of the Series Resistance on the Current Response of a HgCdTe Avalanche Photodiode Under High-intensity Nanosecond Irradiation
(2022-05-10)We investigate the nonlinear signal current response of a Hg0.72Cd0.28Te avalanche photodiode (APD) irradiated by high-intensity, finite-duration laser pulses. At high irradiation levels and/or high gains, carrier-induced ... -
Analysis of samples of high explosives extracted from explosive remnants of war
(2022-10-10)Millions of tonnes of dumped ammunition and explosive remnants of war remain in nature both on land and at sea. It is well known that the ordnance could represent a definite explosive risk if disturbed, and that some of ... -
Glioblastoma microenvironment contains multiple hormonal and non-hormonal growth-stimulating factors
(2022-06-04)Background The growth of malignant tumors is influenced by their microenvironment. Glioblastoma, an aggressive primary brain tumor, may have cysts containing fluid that represents the tumor microenvironment. The aim of ... -
Correlations between sound speed and density in seabed sediment cores collected in Norwegian waters
(2022-08-08)In modelling of underwater sound propagation, knowledge about the seabed’s acoustic properties is essential, especially sound speed and density. These two properties are highly correlated, and standard empirical regressions ... -
Population Based Routing in LEO Satellite Networks
(2022-06-26)Packet switching in a Low Earth Orbit (LEO) satellite network may calculate the best traffic route through the less populated areas of the planet, in order to avoid relaying through the busiest satellites. A number of ideas ... -
Segmentation of PMSE data using random forests
(2022-06-22)EISCAT VHF radar data are used for observing, monitoring, and understanding Earth’s upper atmosphere. This paper presents an approach to segment Polar Mesospheric Summer Echoes (PMSE) from datasets obtained from EISCAT VHF ... -
Cooperative Caching in Space Information Networks
(2022-05-22)Members of a Low Earth Orbit (LEO) satellite group need to coordinate their activities in order to improve the quality and timeliness of the services provided to terrestrial clients. As a report from a work in progress, ...