Author:Varzinczak, JJDate:Jul 2009Domain descriptions in reasoning about actions are logical theories and as such they may also evolve. Given that, knowledge engineers also need revision tools to incorporate new incoming laws about the dynamic environment. Here the authors ...Read more
Author:Cilliers, Jacques E; Smit, JCDate:Sep 2009In previous paper 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 an Lp norm sense. It was shown ...Read more
Author:Bencherif, H; Begue, NM; Diab, CR; Sivakumar, V; Keckhut, PDate:Sep 2010The present reports on the use of a multi-regression model adapted at Reunion University for temperature and ozone trend estimates. Depending on the location of the observing site, the studied geophysical signal is broken down in form of a ...Read more
Author:Meijer, M-C; Dala, LDate:Jun 2015The basis of linear piston theory in unsteady potential flow is used in this work to develop a quantitative treatment of the validity range of piston theory. In the limit of steady flow, velocity perturbations from Donov’s series expansion ...Read more
Author:Rosman, Benjamin S; Ramamoorthy, S; Mahmud, MMH; Kohli, PDate:Feb 2014Different interfaces allow a user to achieve the same end goal through different action sequences, e.g., command lines vs. drop down menus. Interface efficiency can be described in terms of a cost incurred, e.g., time taken, by the user in ...Read more
Author:Sahraeian, R; Van Compernolle, D; De Wet, FebeDate:May 2014This paper demonstrates the application of Intrinsic Spectral Analysis (ISA) for low-resource Automatic Speech Recognition (ASR). State-of-the-art speech recognition systems that require large amounts of task specific training data fail to ...Read more
Author:Roux, FSDate:Jun 2011The presentation on topological charge distributions in stochastic optical fields concludes that by using a combination of speckle fields one can produce inhomogeneous vortex distributions that allow both analytical calculations and numerical ...Read more
Author:Kesavan Pillai, Sreejarani; Moloto, N; Ray, SSDate:Feb 2009The organization of metal or semiconductor nanoparticles like quantum dots (QDs) on carbon nanotubes (CNTs) is one good example motivated by the desire to combine the properties of two functional nanoscale materials to achieve a wider range ...Read more
Author:Landman, WA; DeWitt, D; Lotter, DDate:Sep 2010The predictability of South African summer rainfall is investigated using coupled ocean-atmosphere models.Read more
Author:Van Niekerk, B; Damianou, A; Rosman, Benjamin SDate:Aug 2017Applying reinforcement learning to robotic systems poses a number of challenging problems. A key requirement is the ability to handle continuous state and action spaces while remaining within a limited time and resource budget. Additionally, ...Read more
Author:Dawood, Zubeida C; Keet, CMDate:Oct 2012It has been shown that using a foundational ontology for domain ontology development is beneficial in theory and practice. However, developers have difficulty with choosing the appropriate foundational ontology, and why. In order to solve ...Read more
Author:Chan, Ka Fai P; Theron, J; Van Heerden, Renier P; Leenen, LDate:Mar 2015In modern warfare it is no longer sufficient to only focus on physical attacks and counter-measures; the threat against cyber networks is becoming increasingly significant. Modern military forces have to provide counter measures against these ...Read more
Author:Keet, CM; Khan, MT; Ghidini, CDate:Nov 2014Generic, reusable ontology elements, such as a foundational ontology's categories and part-whole relations, are essential for good and interoperable knowledge representation. Ontology developers, which include domain experts and novices, face ...Read more
Author:Moodley, D; Seebregts, CJ; Pillay, AW; Meyer, TDate:Aug 2013eHealth governance and regulation are necessary in low resource African countries to ensure effective and equitable use of health information technology and to realize national eHealth goals such as interoperability, adoption of standards and ...Read more
Author:Jafta, Y; Leenen, L; Chan, Ka Fai PDate:Jun 2020The protection and management of data, and especially personal information, is becoming an issue of critical importance in both the business environment and in general society. Various institutions have justifiable reasons to gather the ...Read more
Author:Klarman, S; Britz, KDate:Aug 2015Data-driven elicitation of ontologies from structured data is a well-recognized knowledge acquisition bottleneck. The development of efficient techniques for (semi-)automating this task is therefore practically vital - yet, hindered by the ...Read more
Author:Dawood, Zubeida C; Van 't Wout, CDate:Oct 2022Although there is an increasing amount of information for counter-terrorism operations freely available online, it is a complex process to extract relevant information and to detect useful patterns in the data in order for intelligence ...Read more
Author:Ramorulane, DaveDate:Jun 2012Open Access (OA) refers to electronic scholarly articles, books, monographs and other grey literature that is freely available. Various electronic platforms limit access to their content due to subscription costs, firewalls, and other access ...Read more
Author:Arcia-Moret, A; Sathiaseelan, A; Zennaro, M; Rondón, F; Pietrosemoli, E; Johnson, DavidDate:Aug 2016TV White Spaces have recently been proposed as an alternative to alleviate the spectrum crunch, characterised by the need to reallocate frequency bands to accommodate the ever-growing demand for wireless communications. In this paper, we ...Read more