Author:Lukhele, LP; Mamba, BB; Musee, N; Wepener, VDate:Jan 2015This study investigated the toxicity of double walled carbon nanotubes (DWCNTs) to three aquatic organisms, namely, Pseudokirchneriella subcapitata, Daphnia pulex, and Poecilia reticulata under the influence of exposuremedia properties ...Read more
Author:Elphinstone, CD; Koen, Renée; Das, SonaliDate:Aug 2009The paper discusses the ad hoc statistical consulting service initiated within the CSIR that has proved successful; however, resourcing remains a major challenge. Even limited advertising of the service within the CSIR resulted in many requests ...Read more
Author:Oladele, DA; Markus, ED; Abu-Mahfouz, Adnan MIDate:Nov 2021Background: With the projected upsurge in the percentage of people with some form of disability, there has been a significant increase in the need for assistive mobility devices. However, for mobility aids to be effective, such devices should ...Read more
Author:Thambiran, Tirusha; Naidoo, SashaDate:Oct 2017Typically, mitigation and adaptation research has been developed separately, with the mitigation research community focused on taking a global approach to limiting cumulative greenhouse gas (GHG) emissions. The adaptation research community, ...Read more
Author:Nair, Kishor K; Pillai, MM; Lefophane, Samuel; Nair, HDDate:Sep 2020Towards the end of 2030, the global population is estimated to be around 8.5 billion. Half of the human population live today in cities and these cities continues to grow exponential growth as people migrate to urban areas in search of a ...Read more
Author:Mokoena, Refiloe; Mturi, Georges AJ; Maritz, Johan; Malherbe, Johan; O'Connell, Johannes SDate:Oct 2019Performance grade specifications for bituminous binders focus on the evaluation of bitumen properties based on the loading and environmental conditions under which the material will be subjected to in the field. The temperature of the asphalt ...Read more
Author:Arabi, Sumaiya; Taljaard, Susan; Weerts, Steven PDate:Mar 2022Globally sustainable environmental practices in ports have been linked to socio-economic benefits. While African ports are increasingly acknowledging environmental issues and starting to address these in environmental policy, many are still ...Read more
Author:Robins, NS; Chilton, PJ; Cobbing, JEDate:Jan 2007Whilst groundwater vulnerability mapping and the delineation of resource and source protection zones have become an appropriate set of management tools for Britain as incorporated in European policy, much of semi-arid Africa is still dealing ...Read more
Author:Burger, Chris R; Jones, TDate:Sep 2011As unmanned aircraft are introduced into civil airspace, a framework for training and licencing of dispatch and operating staff will be required. This paper assesses existing pilot training unit standards and proposes a framework within which ...Read more
Author:Hassan Mahmud, MM; Rosman, Benjamin S; Ramamoorthy, S; Kohli, PDate:Jun 2014Interactive interfaces are a common feature of many systems ranging from field robotics to video games. In most applications, these interfaces must be used by a heterogeneous set of users, with substantial variety in effectiveness with the ...Read more
Author:Tizora, P; Le Roux, Alize; Mans, Gerbrand G; Cooper, Antony KDate:Sep 2018Models which integrate and evaluate diverse factors of Land Use and Land Cover (LULC) change can be used to guide planners in making more informed decisions and achieving a balance between urban growth and preservation of the natural environment. ...Read more
Author:Bean, WL; Schmitz, P; Engelbrecht, GNDate:Sep 2009The Supply Chain Operations Reference (SCOR) model has been widely used as a tool for supply chain analysis in commercial environments, since its creation by the Supply Chain Council. More recently the SCOR model has been used during the ...Read more
Author:Davis, C; Archer, Emma RM; Maserumule, R; Stevens, N; Sinden, LADate:Apr 2010This study will draw on the findings of a significant amount of research that has already taken place in the area. There is a keen desire amongst diverse stakeholders to access global change information (for example, the use of such information ...Read more
Author:Mpofu, K; Kumile, CM; Tlale, NSDate:2008A variety of methodologies have been utilised in the design of reconfigurable industrial machines. Authors consider some of the methods that have been used given the critical aspects of these methods, the commercial off the shelf (COTS) method ...Read more
Author:Roux, DJ; Kleynhans, CJ; Thirion, C; Hill, Liesl; Engelbrecht, JS; Deacon, AR; Kemper, NPDate:Oct 1999The River Health Programme (RHP) is being designed to generate information regarding the ecological state of riverine ecosystems in South Africa. An adaptive assessment and management procedure is suggested as a means of linking the monitoring ...Read more
Author:Schneider, F; Waibel, P; Wallrabe, UDate:Aug 2009In this paper the authors compare the performance and optical quality of two types of adaptive fluidic silicone-membrane lenses. The membranes feature either a homogeneous thickness, or it is shaped resulting in an inhomogeneous cross-section. ...Read more
Author:Masonta, Moshe T; Mekuria, Fisseha; Mzyece, M; Djouani, KDate:Sep 2015Spectrum decision is the ability of a cognitive radio (CR) system to select the best available spectrum band to satisfy dynamic spectrum access network (DSAN) users¿ quality of service (QoS) requirements without causing harmful interference ...Read more
Author:Onumanyi, Adeiza J; Abu-Mahfouz, Adnan MI; Hancke, GPDate:Feb 2020Some low power wide area network (LPWAN) developers such as Sigfox, Weightless, and Nwave, have recently commenced the integration of cognitive radio (CR) techniques in their respective LPWAN technologies, generally termed CR-LPWAN systems. ...Read more