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Now showing items 151-160 of 582
Large-eddy simulations of dense-gas dispersion within a high-Reynolds number turbulent boundary layer
(2017)
Large-eddy simulations of flows over a backward-facing step with release of four different gases with increasing densities have been performed. The results have been analysed with particular emphasis on the part of the ...
Software-Defined Underwater Acoustic Modems: Historical Review and the NILUS Approach
(2017)
Flexible/adaptive acoustic modems that are reprogrammable/reconfigurable at all layers of the communication stack, either by a user or by means of autonomous decisions, are considered as an important enabler for interoperability ...
Intracavity trace molecular detection with a broadband mid-IR frequency comb source
(2013)
Ultrasensitive detection of methane, isotopic carbon dioxide, carbon monoxide, formaldehyde, acetylene, and ethylene is performed in the spectral range 2.5–5 μm using intracavity spectroscopy in broadband optical parametric ...
Enhancement in Light Emission From Hg-Cd-Te Due to Surface Patterning
(2011)
Enhancement of light emission from HgCdTe due to surface patterning has been studied by means of photoluminescence (PL) spectroscopy. A triangular pattern of circular holes was etched into the CdTe layer grown on top of ...
Country survey: military expenditure and defence policy in Norway 1970?2013
(2017)
This article examines military expenditure and defence policy in Norway from 1970 to 2013. Until 1990 Norwegian military expenditure remained between 2.5 and 3.0 per cent of Gross Domestic Product (GDP). Despite constant ...
Federated Identity Management in a Tactical Multi-Domain Network
(2011)
Identity Management maintains information regarding
actors of an Information System, like users, equipment
and services. One important service is to disseminate and
validate credentials for the purpose of authentication ...
Measurements of IR propagation in the marine boundary layer during the September 2011 SQUIRREL trial
(2012)
A multinational field trial (SQUIRREL) was performed at the Eckernförder Bucht, in the Baltic Sea, during September 2011 to study infrared ship signature and atmospheric propagation effects close to the sea surface in a ...
Characterization of airborne bacteria at an underground subway station
(2012)
The reliable detection of airborne biological threat agents depends on several factors, including the performance criteria of the detector and its operational environment. One step in improving the detector's performance ...
Simulation of infrared avalanche photodiodes from first principles
(2017)
The present article deals with device physics and modeling of an Hg0.28Cd0.72Te wide-area electron-initiated avalanche photodiode, with main input data extracted from first principles electronic structure codes. Due to the ...
Generating Random Earthquake Events for Probabilistic Tsunami Hazard Assessment
(2016)
To perform probabilistic tsunami hazard assessment for subduction zone earthquakes, it is necessary to start with a catalog of possible future events along with the annual probability of occurrence, or a probability ...