Author:Beyers, CDate:Dec 2006This article proposes a figure ground analogy as alternative way of conceptually integrating sustainability and planning. Within this framework planners are challenged to creatively consider planning practice and thought against a background ...Read more
Author:Herling, MC; Cupido, CF; O'Farrell, PJ; Du Plessis, LDate:Nov 2009Nonsustainable ostrich farming practices have degraded large areas of the Little Karoo, a semiarid region in South Africa. The Little Karoo lies within the Succulent Karoo biome, a recognized biodiversity hotspot. A financial feasibility ...Read more
Author:Reyers, B; Polasky, S; Tallis, H; Mooney, HA; Larigauderie, ADate:May 2012Recently, some members of the conservation community have used ecosystem services as a strategy to conserve biodiversity. Others in the community have criticized this strategy as a distraction from the mission of biodiversity conservation. ...Read more
Author:Sililo, OTN; Tellam, JHDate:Nov 2000Unstable unsaturated zone flow (fingering) is a potentially important process in recharge, pollution, and surface water/ground water body interactions. Extending previous workers ' studies on homogeneous systems, sand tank experiments have ...Read more
Author:Shabalala, MB; Moabalobelo, Terrence; Van der Merwe, TDate:Mar 2015As cybercrime is on the rise, individuals would like to rest assured that their authentication information cannot be stolen, and then used to gain access to their privileged information. Smart cards can and have played a pivotal role in ...Read more
Author:Moolla, Yaseen; Singh, A; Saith, E; Akhoury, SDate:Dec 2015Fingerprint recognition is an important security technique with a steadily growing usage for the identification and verification of individuals. However, current fingerprint acquisition systems have certain disadvantages, which include the ...Read more
Author:Msiza, IS; Mathekga, Mmamolatelo E; Nelwamondo, Fulufhelo V; Marwala, TDate:Sep 2011Fingerprint image segmentation plays an important role in any fingerprint image analysis implementation and it should, ideally, be executed during the initial stages of a fingerprint manipulation process. After careful consideration of various ...Read more
Author:Marwala, T; Sibisi, SDate:Jan 2005Finite element (FE) models are widely used to predict the dynamic characteristics of aerospace structures. These models often give results that differ from measured results and therefore need to be updated to match measured results. Some of ...Read more
Author:Walwyn, DDate:2007The sudden and dramatic growth of the mobile phone manufacturing sector in Finland is an interesting case study for science and technology (S&T) policy analysts. Mostly on account of the rapidity of this growth against a relatively static ...Read more
Author:Van Wilgen, BW; Biggs, H; O'Regan, SP; Mare, NDate:Apr 2000This paper analyses the fire history of the Kruger National Park (1.9 million ha), South Africa, for different periods in the park's history, where fire protection was followed by prescribed burning and then a 'natural' (lightning) fire policy. ...Read more
Author:van Wilgen, BW; Forsyth, GG; de Klerk, H; Das, Sonali; Khuluse, S; Schmitz, PDate:2010The authors used a spatial data base of fires within 10 protected areas covering >720 000 ha to examine the frequency, seasonality, size and cause of fires over four decades. Their study covered five fire climate zones and a range of mountain ...Read more
Author:Archibald, SDate:May 2013Since the time of Darwin, Wallace and Schimper, botanists and ecologists have been interested in understanding the global distribution of vegetation. Such questions are becoming more pressing as Earth System modellers attempt to predict the ...Read more
Author:Somerset, VSDate:Jan 2010In order to investigate and understand the behaviour of mercury in the South African environment, the Council for Scientific and Industrial Research (CSIR) has established the first Mercury Reference Laboratory at the CSIR in Stellenbosch, ...Read more
Author:Mashapa, MG; Chetty, N; Ray, Suprakas SDate:Oct 2012Spin polarized density functional theory has been used to investigate the structural stability and electronic properties of extrinsic and intrinsic defects in boron nitride nanotubes. Carbon substitutional defects under nitrogen rich and ...Read more
Author:Mnisi, VC; Sithole, ME; Modiba, RosinahDate:2021Elastic modulus is a very important physical aspect for biomaterials which is impartial to various replacements as artificially hip joints, bone plate, and gum implants since it measures the material’s resistance to be deformed elastically. ...Read more
Author:Oberholster, Paul J; Jappie, S; Cheng, Po-Hsun; Botha, AM; Matthews, MWDate:11 Mar 2015In South Africa, little is known about the production of microcystin by the genus Anabaena Bory. In April 2012, during a cyanobacterial bloom event in Theewaterskloof Dam, Western Cape province, the plankton was sampled on 10 occasions. The ...Read more
Author:Oberholster, Paul J; Ashton, PJ; Fritz, GB; Botha, AMDate:Apr 2010Ophrydium versatile (Müller 1786) Ehrenberg 1830 – a symbiotic ciliate that forms gelatinous colonies – is widely distributed in temperate lakes in Europe and America, but has not previously been recorded from rivers. In this paper we report ...Read more
Author:Recio, MR; Mathieu, Renaud SA; Maloney, R; Seddon, PJDate:Apr 2010The presence of feral cats (Felis catus) in the braided river valleys of New Zealand poses a threat to native species such as the critically endangered black stilt (Himantopus novaezelandiae). Trapping remains the most common method to control ...Read more
Author:Singh, M; Kijko, A; Durrheim, RDate:Oct 2011A first-order seismotectonic model was created for South Africa. This was done using four logical steps: geoscientific data collection, characterisation, assimilation and zonation. Through the definition of subunits of concentrations of ...Read more