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Now showing items 581-590 of 1298
Classification of birds and UAVs based on radar polarimetry
(2016)
This letter aims to show the potential of using polarimetric parameters to distinguish between large birds and unmanned aerial vehicles (UAVs) of comparable size in the context of a modern long-range air defense radar. ...
Sperm whales reduce foraging effort during exposure to 1-2 kH z sonar and killer whale sounds
(2016)
The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantified using hidden state analysis of time series of acoustic and movement data ...
Measurements of high-frequency acoustic scattering from glacially eroded rock outcrops
(2016)
Measurements of acoustic backscattering from glacially eroded rock outcrops were made off the coast of Sandefjord, Norway using a high-frequency synthetic aperture sonar (SAS) system. A method by which scattering strength ...
A Study of the Detonation Properties, Propellant Impulses, Impact Sensitivities and Synthesis of Nitrated ANTA and NTO Derivatives
(2016)
Nitrated derivatives of 5-amino-3-nitro-1,2,4-triazole (ANTA)
and 3-nitro-1,2,4-triazol-5-one (NTO) were theoretically characterized with respect to their performance as high explosives and rocket propellants. The detonation ...
Headspace-trap gas chromatography-mass spectrometry for determination of sulphur mustard and related compounds in soil
(2010)
Methods for trace determination of sulphur mustard (HD) and some related cyclic sulphur compounds in soil samples have been developed using headspace-trap in combination with gas chromatography-mass spectrometry (GC-MS). ...
Increased CSF levels of aromatic amino acids in hip fracture patients with delirium suggests higher monoaminergic activity
(2016)
Background
To examine whether delirium in hip fracture patients was associated with changes in the levels of amino acids and/or monoamine metabolites in cerebrospinal fluid (CSF) and serum.
Methods
In this ...
High-resolution Spaceborne SAR Processing Using the Decomposed Transfer Function
(2017)
In this paper a new analytic decomposed transfer function (DTF) for spaceborne SAR (Synthetic Aperture Radar) processing is calculated using the stationary phase approximation and Taylor’s series expansion. The DTF copes ...
Discriminating between camouflaged targets by their time of detection by ahuman based observer assessment method
(2015)
Detection of a camouflaged object in natural sceneries requires the target to be distinguishable from its local background. The development of any new camouflage pattern therefore has to rely on a well-founded test methodology ...
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 ...
Classification of Ships Using Real and Simulated Data in a Convolutional Neural Network
(2016)
Convolutional neural networks (CNNs) have recently been applied successfully in large scale image classification competitions for photographs found on the Internet. As our brains are able to recognize objects in the images, ...