Browsing Articles by Issue Date
Now showing items 1-20 of 884
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Integrated Camera-Based Navigation
(2000)This paper presents an integrated INS (Inertial Navigation System) and camera-based navigation system. The camera-based navigation system provides position measurement aiding to the INS. This is an alternative to the more ... -
A comparison of rain attenuation and drop size distributionsmeasured in Chilbolton and Singapore
(2002)Attenuation of radio waves caused by precipitation, especially in the form of rain, is considered to be the limiting factor for new communication systems that will exploit the radio wave spectrum at frequencies higher than ... -
ERS tandem InSAR processing for DEM generation, glacier motion estimation and coherence analysis on Svalbard
(2003)This paper describes the unique InSAR (Interferometric Synthetic Aperture Radar) processing algorithms at Norwegian Defence Research Establishment (FFI) and how ERS (European Remote Sensing Satellite) tandem data are used ... -
A Novel Method of Predicting Site DependentSpecific Rain Attentuation of Millimeter Radio Waves
(2003)There is a need for validation and improvement of propagation prediction methods for the safe design and operation of millimeter radio communication systems. At this frequency range, propagation related degradation is ... -
Imaging ground sensor system OPAK
(2003-09-18)Architecture and technology of imaging intrusion detection sensor OPAK are presented. Applications and desired features for IDS and UGS are compared. Started developments of OPAK towards an unattended ground sensor system ... -
Valproate is neuroprotective against malonate toxicity in rat striatum: an association with augmentation of high-affinity glutamate uptake
(2004)The antiepileptic drug valproate (VPA) may be neuroprotective. We treated rats with VPA for 14 days (300 mg/kg twice daily) before intrastriatal injection of 1.5 μmol (1 M) of the succinate dehydrogenase inhibitor malonate. ... -
Comparison of Measurements with Prediction Methods for Propagation by diffraction at88 - 108 MHz
(2004)Three methods for predicting attenuation due to diffraction are tested against a large database of 115 614 measurement points, representing 115 614 different path profiles of 100-m horizontal resolution, and vertical root ... -
Optical parametric master oscillator and power amplifier for efficient conversion of high-energy pulses with high beam quality
(2004)We describe a system for parametric conversion of high-energy, Q-switched laser pulses from 1.064 µm to 2.1 µm in KTiOPO4. High beam quality and efficiency are obtained by use of a two-stage system: An optical parametric ... -
International Policing and the Rule of Law in Transitions from War to Peace
(2004)«Challenges to Collective Security» Working Papers from NUPI’s UN Programme: In transitions from war to peace there are few challenges more in need of urgent attention and careful planning than the issues of policing ... -
DVL Velocity Aiding in the HUGIN 1000 Integrated Inertial Navigation System
(2004)The RDI WHN-600 Doppler Velocity Log (DVL) is a key navigation sensor for the HUG1N 1000 Autonomous Underwater Vehicle (AUV). HUGIN 1000 is designed for autonomous submerged operation for long periods of time. This is ... -
High resolution spaceborne INSAR simulation with extended scenes
(2005)The Inverse–EETF4 (Extended Exact Transfer Function 4th order) is used to simulate raw data and a complete INSAR processing chain for high squint has been developed. Phase differences for a spaceborne INSAR geometry are ... -
The red-sky enigma over Svalbard in December 2002
(2005)On 6 December 2002, during winter darkness, an extraordinary event occurred in the sky, as viewed from Longyearbyen (78° N, 15° E), Svalbard, Norway. At 07:30 UT the southeast sky was surprisingly lit up in a deep red ... -
Solar Wind from Coronal Funnels and Transition Region Lyalpha
(2005)Using a newly developed gyrotropic solar wind model that extends continuously from the mid-chromosphere to 1 AU and that accounts for radiative losses in the transition region, we have studied the difference between the ... -
Response of circulating immune cells to major gunshot injury, haemorrhage, and acute surgery
(2005)Purpose: The purpose of this study was to use an established porcine model to investigate the effects on immune function of severe gunshot injury. Methods: Twelve pigs sustained two standardised rounds, one through ... -
On synchronization in semelparous populations
(2005)Synchronization, i.e., convergence towards a dynamical state where the whole population is in one age class, is a characteristic feature of some population models with semelparity. We prove some rigorous results on this, ... -
Survey of Key Management in Ad Hoc Networks
(2006)The wireless and dynamic nature of mobile ad hoc networks (MANETs) leaves them more vulnerable to security attacks than their wired counterparts. The nodes act both as routers and as communication end points. This makes ... -
Using web services to realize service oriented architecture in military communication networks
(2007)The principles of network enabled capability highlight the need for seamless information exchange. The service oriented architectural paradigm has been recognized as one of the key enablers to achieve this. At the same ... -
Genetic distribution of 295 Bacillus cereus group members based on adk-screening in combination with MLST (Multilocus Sequence Typing) used for validating a primer targeting a chromosomal locus in B. anthracis
(2007)The genetic distribution of 295 Bacillus cereus group members has been investigated by using a modified Multilocus Sequence Typing method (MLST). By comparing the nucleic acid sequence of the adk gene fragment, isolates ...