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Now showing items 5212-5231 of 8146

On advanced variational formulation of the method of lines and its application to the wave propagation problems

Shatalov, M (SACAM 2012, 2012-09)

The method of lines is a simple and reliable method of numerical analysis of parabolic and hyperbolic problems of mathematical physics. By means of this method mixed initial-boundary problems described by partial differential ...
On dynamics and control of vibratory gyroscopes with special spherical symmetry

Shatalov, M; Fedotov, I; Joubert, S (2006-05)

It was shown in 1985 by Acad. V. Zhuravlev that the angular rate of a pure vibrating mode excited in a vibratory gyroscope with spherical symmetry is proportional to an inertial angular rate of the gyroscope. The effect ...
On energy optimisation in multipurpose batch plants using heat storage

Majozi, T; Stamp, J (2010-10)

The use of heat integration in multipurpose batch plants to minimise energy usage has been in the literature for more than two decades. Direct heat integration may be exploited when the heat source and heat sink processes ...
On equivalent radius of curvature for PWL geometrical modeling a loop antenna

Lysko, AA (IEEE, 2012-11)

A circular loop antenna is often numerically modeled using a regular polygon. This approach is simple and robust, yet it alters the circumference of the loop and may thus shift the resonance frequency in the numerical ...
On fair, effective and efficient REDD mechanism design

Obersteiner, M; Huettner, M; Kraxner, F; McCallum, I; Aoki, K; Böttcher, H; Fritz, S; Gusti, M; Havlik, P; Kindermann, G; Rametsteiner, E; Reyers, B (BioMed Central, 2009-11)

The issues surrounding 'Reduced Emissions from Deforestation and Forest Degradation' (REDD) have become a major component of continuing negotiations under the United Nations Framework Convention on Climate Change (UNFCCC). ...
On finite rotations and the noncommutativity rate vector

Candy, LP; Lasenby, J (IEEE, 2010-04)

The orientation vector differential equation was first derived by John Bortz to improve the accuracy of strapdown inertial navigation attitude algorithms. These algorithms previously relied on the direct integration of the ...
On grouping individual wire segments into equivalent wires or chains, and introduction of multiple domain basis functions

Lysko, AA (IEEE, 2009-06)

The paper introduces a method to cover several wire segments with a single basis function, describes related practical algorithms, and gives some results. The process involves three steps: identifying chains of wire segments, ...
On gyroscopic effects in vibrating and axially rotating solid and annular discs

Joubert, SV; Fedotov, I; Pretorius, W; Shatalov, MY (2007-05)

“Bryan’s effect" - that is, the effect of a vibrating pattern’s precession in the direction of inertial rotation of a vibrating ring - was discovered by G. Bryan in 1890. This effect has several applications in navigational ...
On identification of dynamic system parameters from experimental data

Shatalov, M; Fedotov, I (Austral Internet Publishing, 2007-08)

In this paper the authors present a new method of numerical evaluation of unknown coefficients of a dynamical system having available information about unknown phase trajectories at some time values. The method consists ...
On Open- source Multi-robot simulators

Namoshe, M; Tlale, NS; Kumile, CM (2008-07)

Open source software simulators play a major role in robotics design and research as platforms for developing, testing and improving architectures, concepts and algorithms for cooperative/multi-robot systems. Simulation ...
On revision of partially specified convex probabilistic belief bases

Rens, G; Meyer, T; Casini, G (IOS Press, 2016-08)

We propose a method for an agent to revise its incomplete probabilistic beliefs when a new piece of propositional information is observed. In this work, an agent’s beliefs are represented by a set of probabilistic formulae ...
On stochastic belief revision and update and their combination

Rens, G (Association for the Advancement of Artificial Intelligence, 2016-04)

I propose a framework for an agent to change its probabilistic beliefs when a new piece of propositional information a is observed. Traditionally, belief change occurs by either a revision process or by an update process, ...
On synthesis and optimization of cooling water systems with multiple cooling towers

Gololo, KV; Majozi, T (American Chemical Society, 2011-01)

Cooling water systems are generally designed with a set of heat exchangers arranged in parallel. This arrangement results in higher cooling water flow rate and low cooling water return temperature, thus reducing cooling ...
On synthesis and optimization of steam system networks. 1. Sustained boiler efficiency

Majozi, T; Price, T (American Chemical Society, 2010-08)

The traditional steam system comprises a steam boiler and the associated heat exchanger network (HEN). Most research published in literature tends to address both the elements of the steam system as separate entities instead ...
On synthesis and optimization of steam system networks. 3. Pressure drop consideration

Price, T; Majozi, T (American Chemical Society, 2010-08)

Heat exchanger networks in steam systems are traditionally designed to operate in parallel. Coetzee and Majozi (Ind. Eng. Chem. Res. 2008, 47, 4405-4413) found that by reusing steam condensate within the network the steam ...
On the application of bezier surfaces for GA-Fuzzy controller design for use in automatic generation control

Boesack, CD; Marwala, T; Nelwamondo, FV (Elsevier, 2012-03)

Automatic Generation Control (AGC) of large interconnected power systems are typically controlled by a PI or PID type control law. Recently intelligent control techniques such as GA-Fuzzy controllers have been widely applied ...
On the comparison between seasonal predictive skill of global circulation models: Coupled versus uncoupled

Beraki, AF; Landman, WA; DeWitt, D (American Geophysical Union Wiley, 2015-11)

The study compares one- and two-tiered forecasting systems as represented by the South African Weather Service Coupled Model and its atmosphere-only version. In this comparative framework, the main difference between these ...
On the ecology of the fauna of stones in the current in a South African river supporting a very large simulium (Diptera) population

Chutter, FM (1968-12)

There is a large population of Simulium chutteri lewis in the Vaal river at and below the village of Warrenton in the north-east of the Cape Province, South Africa. The female of this species attacks man, cattle and horses ...
On the effects of quantization on mismatched pulse compression filters designed using L-p norm minimization techniques

Cilliers, Jacques E; Smit, JC (2007-10)

In [1] the authors introduced a technique for generating mismatched pulse compression filters for linear frequency chirp signals. The technique minimizes the sum of the pulse compression sidelobes in a p L –norm sense. It ...
On the entailment problem for a logic of typicality

Booth, R; Casini, G; Meyer, T; Varzinczak, I (AAAI Press, 2015-07)

Propositional Typicality Logic (PTL) is a recently proposed logic, obtained by enriching classical propositional logic with a typicality operator. In spite of the non-monotonic features introduced by the semantics adopted ...

Now showing items 5212-5231 of 8146

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