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Now showing items 3997-4016 of 8146
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(2008-06)The South African National Defence Force is in the process of establishing a Joint Command and Control Test Facility at a National Research Institute. The goal with this facility is to provide an integrated environment for ...
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Interoperable domain models: the ISO land administration domain model LADM and its external classes (2011-09)This paper provides a brief overview of one of the first spatial domain standards: a standard for the domain of Land Administration (LA). This standard is in the draft stage of development now (May 2011). The development ...
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(Water Research Commission, 1999-10)In order to facilitate a common understanding, on-going debate and increasing application of ecological risk assessment (ERA) in South Africa, the ERA process of the US Environmental Protection Agency (EPA) has been ...
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(Pergamon-Elseveir Science Ltd, 2006-03)Recent development of an instrument for measuring the optically stimulated luminescence signal from individual mineral grains has made it practicable to measure the equivalent dose (De) from many hundreds or thousands of ...
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(Taylor & Francis, 2014-05)The green economy concept promises to provide a concrete roadmap to the implementation of sustainable development while delivering significant social and economic benefits and reduced environmental risks. However, the ...
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(Urban & Fischer Verlag, 2005-01)Isolates representing Cryptococcus laurentii and Cryptococcus podzolicus, originating from soil of a heath land indigenous to South Africa, were screened for the presence of enantioselective epoxide hydrolases for 2, ...
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(2010-05)Road safety is a core problem that the South African government battle with year-on year. One of the areas where South Africa has sadly been lacking behind is within the field of road and traffic psychology. This is despite ...
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(Elsevier, 2015-05)Interval Algebra provides an effective means to schedule surveillance radar networks, as it is a temporal ordering constraint language. Thus it provides a solution to a part of resource management, which is included in the ...
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(Elsevier, 2015-05)Interval Algebra provides an effective means to schedule surveillance radar networks, as it is a temporal ordering constraint language. Thus it provides a solution to a part of resource management, which is included in the ...
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(INTERSPEECH 2010, 2010-09)The authors present an initial investigation into the acoustic realisation of tone in continuous utterances in Sepedi (a language in the Southern Bantu family). An analytic model for the generation of appropriate pitch ...
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(SPIE, 2011-01)A method of decomposing a dual-directional laser beam into a forward propagating field and a backward propagating field for an apertured plano-concave cavity is presented. An intra-cavity aperture is a simple method of ...
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(2012-08)This work deals with the generation of symmetrical high order Laguerre Gaussian modes. These high order Laguerre-Gaussian beams are generated by forcing the laser using an annular binary Diffractive Optical Element whose ...
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(Springer Verlag, 2012)In this paper we demonstrate experimentally the intra-cavity generation of a coherent superposition of Laguerre–Gaussian modes of zero radial order but opposite azimuthal order. The superposition is created with a simple ...
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(SPIE Proceedings, 2014-02)We explore an intra-cavity beam shaping approach to generate a Gaussian distribution by the metamorphosis of a Gaussian beam into a flat-top distribution on opposing mirrors. The concept is tested external to the cavity ...
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(SPIE, 2011-08)In this paper the authors explore vortex beams and in particular the generation of single LG0l modes and superpositions thereof. Vortex beams carry orbital angular momentum (OAM) and this intrinsic property makes them ...
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(Society of Photo-Optical Instrumentation Engineers, 2009-08)In this paper the researchers report on two resonator systems for producing LDBLBs with arbitrary initial parameters. First resonator system is based on doublet of divergence and convergence lenses with spherical aberration. ...
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(Society of Photo-Optical Instrumentation Engineers (SPIE), 2008-08)There are many applications in which a laser beam with a flat–top intensity profile would be ideal, as compared to a laser beam with a non–uniform energy distribution. Standard stable optical resonators will unfortunately ...
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(IEEE, 2010-05)Optical micromanipulation of transparent microparticles such as cellularmaterials relies upon the application of optical forces that are crucially dependent on the refractive index contrast between the particle and the ...
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(Oxford University Press (OUP), 2014-03)Cryopreservation is the only long-term conservation strategy available for germplasm of recalcitrant-seeded species. Efforts to cryopreserve this form of germplasm are hampered by potentially lethal intracellular freezing ...
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(2012-07)Glaucoma is the second leading cause of irreversible blindness. The primary indicator for glaucoma is an elevated intraocular pressure, which is estimated by means of contact or non-contact tonometry. However, these ...
Now showing items 3997-4016 of 8146
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