Articles: Recent submissions
Now showing items 601-620 of 889
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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 ... -
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 ... -
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 ... -
Enantioselectivity, swelling and stability of 4-hydroxyprolinol containing acrylic polymer beads in the asymmetric reduction of ketones
(2011)A new 4-hydroxy-α,α-diphenyl-l-prolinol containing polymethacrylate, prepared without chromatography by a large scale adaptable synthesis, has been evaluated as a catalyst in the asymmetric reduction of 1-arylethanones. ... -
Converting the Iranian heavy water reactor IR-40 to a more proliferation-resistant reactor
(2012)This article assesses the feasibility and benefits of converting the Iranian heavy water research reactor, IR-40, from using natural uranium to low-enriched uranium fuel. Based on neutronics calculations for a detailed ... -
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 ... -
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 ... -
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, ... -
Islamic State Nasheeds As Messaging Tools
(2016)Although jihadi nasheeds play an important role in the Islamic State's propaganda, there is scant literature on the topic. This article is an exploratory study on seventeen Islamic State nasheeds released between December ... -
The Arts of Michael Moore and American Soft Power
(2009)Michael Moore is one of the most disputed authors and filmmakers in the United States. The purpose with this article is to try to shed some new insights and understandings of Moore's political views as they are represented ... -
Tiered Modelling - A Solution to Hyper-Coherent Morphological Models?
(2017)Morphological models that comprise few constraints between parameter values are considered hyper-coherent. A high degree of coherence in a model can be a problem if it results in a large and unwieldy solution space. This ... -
Tracking airborne Legionella and Legionella pneumophila at a biological treatment plant
(2008)Biological treatment plants are frequently used to degrade organic substances in wastewater from wood refinement processes. Aeration ponds in such plants provide an optimal growth environment for many microorganisms, ... -
Heirs of Zarqawi or Saddam? The Relationship between al-Qaida in Iraq and the Islamic State
(2015)This paper examines the relationship between al-Qaida in Iraq and Islamic State, asking what remains of AQI within the current incarnation of IS. The study is based on available information concerning the backgrounds and ... -
A Compressed Sensing Based Design for Formation of Range-Doppler Maps
(2016)Compressed sensing (CS) based reconstruction methods have been in much focus over the last years as they provide a mean to work with limited amount of data. In this article we present an application of CS and sparse ... -
Compressed Sensing for Multistatic Radar Systems with Arbitrary Block Codes
(2015)Multistatic radar systems with multiple elements at transmitting and/or receiving side permit multiple target observations from different viewpoints providing various advantageous. In an environment with multiple transmitters ... -
Evaluation of a highly discriminating multiplex multi-locus variable-number of tandem-repeats (MLVA) analysis for Vibrio cholerae
(2009)Vibrio cholerae is the etiological agent of cholera and may be used in bioterror actions due to the easiness of its dissemination, and the public fear for acquiring the cholera disease. A simple and highly discriminating ... -
Meta-heuristics for improved RF emitter localization
(2017)Locating Radio Frequency (RF) emitters can be done with a number of methods, but cheap and widely available sensors make the Power Difference of Arrival (PDOA) technique a prominent choice. Predicting the location of an ... -
The defence industry as a locomotive for technological renewal in Russia: are the conditions in place?
(2017)This article examines the extent to which the conditions for successful military to civilian technological spin-offs are in place in Russia. This is important because Russian authorities use the potential for such spin-offs ... -
The Multivariate Normal Inverse Gaussian distribution: EM-estimation and analysis of synthetic aperture sonar data
(2015)The heavy-tailed Multivariate Normal Inverse Gaussian (MNIG) distribution is a recent variance-mean mixture of a multivariate Gaussian with a univariate inverse Gaussian distribution. Due to the complexity of the ... -
A new method for underwater archaeological surveying using sensors and unmanned platforms
(2016)As most of the world’s oceans are inaccessible to diving archaeologists, we must rely on advanced underwater technology and marine robotics to explore, map and investigate ship wrecks in these areas. New sensors and unmanned ...