Browsing Articles by Title
Now showing items 823-842 of 846
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Very-High-Frequency Single-Input–Multiple-Output Acoustic Communication in Shallow Water
(2018)Very-high-frequency (VHF) underwater acoustic communication is a relatively unexplored terrain, but its importance is expected to increase with the growing demands for larger bandwidths and higher data rates. Knowledge of ... -
Vibrational Corrections to NMR Spin-Spin Coupling Constants from Relativistic Four-Component DFT Calculations
(2022-09-22)Zero-point vibrational (ZPV) corrections to the nuclear spin–spin coupling constants have been calculated using four-component Dirac–Kohn–Sham DFT for H2X (where X = O, S, Se, Te, Po), XH3 (where X = N, P, As, Sb, Bi), and ... -
War and the Willingness to Resist and Fight in Ukraine
(2023-12-05)This study explores the effects of Russia's use of military force on the Ukrainian willingness to fight and resist. We find assumptions from the theoretical literature on the willingness to fight of limited relevance. ... -
War in Europe, but Still Low Tension in the High North? An Analysis of Norwegian Mitigation Strategies
(2024)Russia’s invasion of Ukraine has created the most precarious security situation in Europe, including the High North, since the Second World War. This article studies how Norway manages High North security dilemmas in the ... -
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 ... -
Wargaming Evolved: Methodology and Best Practices for Simulation-Supported Wargaming
(2019-12-12)When developing and assessing future force structures, wargaming is a key activity for better understanding the strengths and weaknesses of the force structures. Today simulation systems let us create synthetic environments ... -
Wargaming for the Purpose of Knowledge Development: Lessons Learned from Studying Allied Courses Of Action
(2022-09-19)We present a series of four wargames intended to improve our ability to analyze the alliance aspect of Norwegian military operations. We discuss the objectives, the set-up, and the lessons learned. The wargames proved to ... -
The Watermark benchmark for underwater acoustic modulation schemes
(2017)Watermark is a freely available benchmark for physical-layer schemes for underwater acoustic communications. It allows researchers to test and compare algorithms for the physical layer under realistic and reproducible ... -
A weakening transatlantic relationship? Redefining the EU-US security and defence cooperation
(2022-05-18)The aim of this article is to discuss how a weakening transatlantic relationship influences European defence cooperation and integration. It also asks how these observed patterns of weakening EU–US relations can be explained ... -
Weeping in Modern Jihadi Groups
(2020-09-14)This article, using a wide range of primary sources, describes the practice of weeping (bukā) in contemporary jihadi groups. It shows that weeping is widespread and encouraged in militant Islamist groups such as al-Qaida ... -
When Insularity Becomes a Problem: The Literature on Jihadism in Jordan
(2020-02-07)This article offers a review of the literature on Jordanian jihadism. While excellent work has been done, particularly on the phenomenon’s history and ideologues such as Abu Muhammad al-Maqdisi, several topics remain ... -
When Security Speech Acts Misfire: Russia and the Elektron Incident
(2009)In October 2005, the Russian trawler Elektron refused to be subjected to arrest when caught by the Norwegian coast guard fishing illegally in the Fisheries Protection Zone off the Svalbard archipelago. With two Norwegian ... -
When the noise goes on: received sound energy predicts sperm whale responses to both intermittent and continuous navy sonar
(2020-04-08)Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards near-continuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than ... -
Why Putin went to war: ideology, interests and decision-making in the Russian use of force in Crimea and Donbas
(2016)Russia’s 2014 annexation of Crimea, and the country’s prominent role in instigating and supporting an anti-Kiev rebellion in Donbas, surprised the world. This study seeks to explain Russian behaviour in these two cases. ... -
Wideband Interferometry in Synthetic Aperture Sonar
(2013)Synthetic aperture sonar (SAS) interferometry can provide very high resolution images and topographic maps of the seafloor over large swaths. Processing of interferometric data to retrieve reliable depth estimates of the ... -
Wideband Propagation Characteristics at 312 MHz in Eastern Norway and Impact on Waveform Requirements
(2015)A wideband Pseudo-Noise channel sounder built by CRC in Canada has been used to measure the wideband channel characteristics in three different types of terrain in Eastern Norway. The channel characteristics at 312 MHz are ... -
Wideband Synthetic Aperture Sonar Back Projection with Maximization of Wave Number Domain Support
(2017)Wideband and widebeam synthetic aperture sonar (SAS) can provide information on the frequency- and aspect-dependent scattering in a scene. We suggest an approach to predict the quality of the sensor data over the available ... -
Wind- and tidal driven ambient noise in seasonallyice-covered waters north of the Svalbard archipelago
(2022-08-24)This paper presents analysis of a 1-year (2018–2019) recording of ambient noise (40–2000 Hz) at a seasonally ice-covered location on the continental slope between the Svalbard archipelago and the Nansen Basin, northeast ...