Browsing Articles by Title
Now showing items 181-200 of 843
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Detection of forest clear-cuts with shuttle radar topography mission (SRTM) and tandem-X InSAR data
(2013)The aim of this study was to determine whether forest clear-cuts during 2000–2011 could be detected as a decrease in surface height by combining Digital Surface Models (DSMs) from the Shuttle Radar Topography Mission ... -
Detection of Legionella pneumophila in a biological treatment plant by co-cultivatiobn with Acanthamoeba castellanii
(2014)Legionella pneumophila was identified in the aeration ponds of a biological wastewater treatment plant at the pulp and paper industry Borregaard, Sarpsborg, Norway. After 3 outbreaks of Legionaires’ disease reported in ... -
Detection of Point Scatterers in Medical Ultrasound
(2021-11-19)We present an overview of the detection of point scatterers in ultrasound images and suggest strategies for evaluating and measuring the detection performance. We use synthetic aperture Field II simulations of a point ... -
Detection: how many pixels are required?
(2020-09-23)In this work, we studied how detection range of a small target changes as a function of the number of defined target pixels. The intuitively simplest method to look for a target in IR images is to look for the “hottest” ... -
DETOUR trials: The mission and its results
(2017)In this paper DMPAR Evaluation Trials for Operationally Upgraded Radar (DETOUR) and their results for a selected scenario are described. The DETOUR trials were conducted by the SET-195 research task group (RTG) under an ... -
Development and Calibration of a Low-Cost Radar Testbed Based on the Universal Software Radio Peripheral
(2019-12-01)For a cognitive radar algorithm to be useful, it must run on radar hardware that is flexible. Typically, this has been viewed as requiring a software-defined radio. With the emergence of cheap, digital transceiver systems, ... -
Development of neuropathology following soman poisoning and medical countermeasures
(2018)Nerve agent-induced seizures can cause varying degrees of neuropathology depending on level of poisoning and duration of seizing. The intention of this review was to validate a novel approach for establishing effective ... -
Discrete Fourier Transform with Neural Networks
(2021-12-10)The discrete Fourier transform is an important computational tool to retrieve the frequency distribution of a sampled signal. Recent years have also witnessed considerable research activity in neural networks as a mean to ... -
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 ... -
Dispersion of SARS-CoV-2 in air surrounding COVID-19-infected individuals with mild symptoms
(2022-02-12)Since the beginning of the pandemic, the transmission modes of SARS-CoV-2—particularly the role of aerosol transmission—have been much debated. Accumulating evidence suggests that SARS-CoV-2 can be transmitted by aerosols, ... -
Disruptive camouflage tricks the human eye - a study of detection times of two near-similar targets in natural backgrounds
(2015)Our understanding of camouflage, in military as well as in evolutionary perspectives, has been developing over the last 100 years. In that period of time several underlying principles have emerged. It has turned out in the ... -
Disruptive coloration in woodland camouflage: evaluation of camouflage effectiveness due to minor disruptive patches
(2016)We present results from an observer based photosimulation study of generic camouflage patterns, intended for military uniforms, where three near-identical patterns have been compared. All the patterns were prepared with ... -
Distributed fusion in underwater sensor networks: Fusing bearing information
(2019)In underwater sensor networks, distributed data fusion may be more efficient than centralized fusion because the limited data transmission capacity can make it difficult to collect all required sensor information at a ... -
Distribution and mobility of lead (Pb), antimony (Sb) and copper (Cu) from ammunition residues on shooting ranges for small arms located on mires
(2017)An environmental survey was performed on shooting ranges for small arms located on minerotrophic mires. The highest mean concentrations of Pb (13 g/kg), Cu (5.2 g/kg), Zn (1.1 g/kg), and Sb (0.83 g/kg) in the top soil were ... -
Disturbance-specific social responses in long-finned pilot whales, Globicephala melas
(2016)Social interactions among animals can influence their response to disturbance. We investigated responses of long-finned pilot whales to killer whale sound playbacks and two anthropogenic sources of disturbance: tagging ... -
Dose response severity functions for acoustic disturbance in cetaceans using recurrent event survival analysis
(2015)Behavioral response studies (BRSs) aim to enhance our understanding of the behavior changes made by animals in response to specific exposure levels of different stimuli, often presented in an increasing dosage. Here, we ... -
Dose-response relationships for the onset of avoidance of sonar by free-ranging killer whales
(2014)Eight experimentally controlled exposures to 1−2 kHz or 6−7 kHz sonar signals were conducted with four killer whale groups. The source level and proximity of the source were increased during each exposure in order to reveal ... -
DSI Suppression with Adaptive Beamforming in DVB-T Passive Radar Measurements
(2018)Adaptive beamforming (ABF) for maximizing the signal to interference plus noise ratio (SINR) is applied to acquisitions made by a passive bistatic radar (PBR) exposed to strong direct signal interference (DSI). The DVB-T ... -
DVB-T Passive Radar Dual Polarization Measurements in the Presence of Strong Direct Signal Interference
(2017)A dual-polarization passive bistatic radar is used to evaluate the potential benefit of cross-polarized measurements for the suppression of strong direct signal interference in the DVB-T band. The linear array antenna ... -
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 ...