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Now showing items 813-832 of 1545

L-CAQ: Joint link-oriented channel-availability and channel-quality based channel selection for mobile cognitive radio networks

Rahman, Md. Arafatur; Asyhari, A. Taufiq; Bhuiyan, Md. Zakirul A.; Salih, Q. M.; Zamli, Kamal Zuhairi Bin (Elsevier, 2018-03-27)

Channel availability probability (CAP) and channel quality (CQ) are two key metrics that can be used to efficiently design a channel selection strategy in cognitive radio networks. For static scenarios, i.e., where all the ...
La alimentación en el mundo único: una perspectiva biológica a través del estudio de restos humanos de la isla de Ibiza : : Food in the Punic world: a biological perspective through the study of human remains from the island of Ibiza

Márquez-Grant, Nicholas; Busom, Júlia Olivé (Universidad de Sevilla; University of Seville, 2020-03-02)

En los últimos años se han incrementado los estudios antropológicos de restos óseos de necrópolis púnicas tanto de Ibiza como de otros lugares de España. A medida que avanzan los estudios antropológicos, también se ha ...
LA-ICP-MS analysis of late bronze age blue glass beads from Gurob, Egypt

Kemp, Victoria; McDonald, A.; Brock, Fiona; Shortland, Andrew J. (Wiley, 2019-10-25)

LA-ICP-MS analysis was undertaken on 37 blue glass beads excavated from a tomb in Gurob, in the Southern Fayum region of Egypt. The tomb was undisturbed, contained the remains of seven females and two children, and dated ...
Laboratory bistatic synthetic aperture radar coherent change detection investigation

Hagelberg, Alexander; Andre, Daniel; Finnis, Mark (IET - The Institution of Engineering and Technology, 2023-08-10)

Synthetic Aperture Radar (SAR) Coherent Change Detection (CCD) allows for the detection of very small scene changes. This is particularly useful for reconnaissance and surveillance as small changes such as vehicle tracks ...
Laboratory intercomparison of Pleistocene bone radiocarbon dating protocols

Huels, M; van der Plicht, J; Brock, Fiona; Matzerath, S; Chivall, D (University of Arizona - Cambridge University Press, 2017-06-21)

Since its invention in the late 1940’s, radiocarbon dating has become an important tool for absolute dating. A prerequisite for the acceptance of this method is consistency between, and compatibility of, radiocarbon dates ...
Laboratory multistatic 3D SAR with polarimetry and sparse aperture sampling

Welsh, Richard; Andre, Daniel; Finnis, Mark (Wiley, 2024-01-01)

With the advent of constellations of SAR satellites, and the possibility of swarms of SAR UAV's, there is increased interest in multistatic SAR image formation. This may provide advantages including allowing three-dimensional ...
Laboratory multistatic polarimetric 3D SAR

Andre, Daniel; Welsh, Richard; Finnis, Mark (IET, 2023-02-07)

With the advent of constellations of SAR satellites, and the possibility of swarms of SAR UAV's, there is increased interest in multistatic SAR image formation. This may provide advantages including allowing three-dimensional ...
Laboratory multistatic polarimetric sparse aperture 3D SAR investigation

Welsh, Richard; Andre, Daniel; Finnis, Mark (Institute of Acoustics, 2023-12-31)

Synthetic Aperture Radar (SAR) is a coherent technique that produces high quality imagery, with a finer cross-range resolution than would be possible with a stationary antenna. Radar pulses from multiple points along a ...
Landmine internal structure detection from ground penetrating radar images

Lombardi, Federico; Griffiths, Hugh D.; Balleri, Alessio (IEEE, 2018-06-11)

Reliable landmine detection is still an unresolved problem. Demining operations are complex activities because of the large variety of existing landmine types, many different possible soil and terrain conditions, and ...
Large-scale instabilities in a STOVL upwash fountain

Saddington, A. J.; Cabrita, P. M.; Knowles, Kevin (2005-12-31)

The fountain flow created by two underexpanded axisymmetric, turbulent jets impinging on a ground plane was studied through the use of laser-based experimental techniques. Velocity and turbulence data were acquired in ...
Laser doppler anemometry measurements in the near-wake of an isolated formula one wheel

Saddington, A. J.; Knowles, R. D.; Knowles, Kevin (Springer Science Business Media, 2007-05-01)

An experimental investigation was conducted to identify the main structures in the near wake of an isolated Formula One wheel rotating in ground contact. A 50 percent-scale isolated wheel assembly, geometrically similar ...
Laser ignitability of insensitive propellants

Fang, Xiao; Ahmad, Sheikh R. (OAT, 2018-04-26)

Laser ignition tests were conducted on insensitive propellants formulated with an insensitive filler (1,1‑diamino-2,2-dinitroethylene, commercially known as FOX-7) and with either energetic or non-energetic binders: ...
Laser ignitibility of energetic crystals doped with gold nanoparticles

Churchyard, Sam; Fang, Xiao; Vrcelj, Ranko (Elsevier, 2019-01-04)

Laser ignition mechanism enhances the safety of explosive applications. However, optical sensitisation of the energetic materials is required for their optical absorption. In this research, explosive Cyclotrimethylene ...
Laser ignitibility of insensitive secondary explosive 1,1-diamino-2,2-dinitroethene (FOX-7)

Fang, Xiao; McLuckie, Warren G. (Elsevier, 2014-12-15)

An experimental investigation into laser ignitibility of insensitive secondary explosives, 1,1-diamino-2,2-dinitroethene (FOX-7) has been carried out, using a diode laser of continuous wave at the laser wavelength of 974 ...
Laser ignition of an optically sensitised secondary explosive by a diode laser

Fang, Xiao; Ahmad, Sheikh R. (Institute of Industrial Organic Chemistry, Poland, 2016-01)

As a green technology, laser ignition of a relatively insensitive secondary explosive has been experimentally investigated. The explosive, hexanitrostilbene (HNS), was doped with one of two optical sensitizers, carbon ...
Laser ignition of elastomer-modified cast double-base (EMCDB) propellant using a diode laser

Herreros, Dulcie N.; Fang, Xiao (Elsevier, 2016-10-06)

An experimental study was conducted to investigate laser ignition using a diode laser for elastomer-modified cast double-base (EMCDB) propellant in order to develop more liable and greener laser ignitors for direct initiation ...
Laser induced breakdown spectrocscopy for elemental analysis in aqueous media

Peel, C. (2012-02-02)

This thesis is based on extensive experimental work over a three year Ph.D. studentship program sponsored by the AWE on laser induced breakdown spectroscopy (LIBS) for elemental analysis in the water environment. An ...
Late Achaemenid and Early Hellenistic Pisidian Material Culture from Düzen Tepe (SW Anatolia)

Daems, D; Braekmans, Dennis; Poblome, J (University of Leuven, 2017-05-01)

The continued importance of pottery studies for the development of the archaeological discipline can hardly be overstated. In this paper we discuss the pottery found at the settlement at Düzen Tepe (SW Anatolia), following ...
Lateral stress evolution in chromium sulfide cermets with varying excess chromium

Petel, O. E.; Appleby-Thomas, Gareth J.; Wood, D. C.; Capozzi, A.; Nabavi, Seyed Ali; Goroshin, S.; Frost, D. L.; Hazell, P. J. (2016-07-01)

The shock response of chromium sulfide-chromium, a cermet of potential interest as a matrix material for ballistic applications, has been investigated at two molar ratios. Using a combustion synthesis technique allowed for ...
Leadership and command on the Eastern Front (1941-1945) : the military style of Marchal Konstantin Rokossovskiy

Walsh, S M (Department of Applied Science, Security and Resilience, 2010-03-24)

Marshal Konstantin Konstantinovich Rokossovskiy, Hero of the Soviet Union, Order of Victory, Knight of the Bath, OBE, victor of Moscow, Stalingrad, Kursk, the destruction of German Army Group Centre and East Prussia, ...

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