Author:Schmitz, P; Cooper, Antony K; De Jong, T; Rossmo, DKDate:Jul 2015This article discusses how the use of cellular networks by a criminal offender produces spatio-temporal data that reveals his/her activities and activity space. The methods aim to establish possible paths that the criminal will use to move ...Read more
Author:Gregory, MA; McClurg, TP; Brouckaert, CJDate:Jan 2003Marine pollution monitoring surveys often include the measurement of heavy metals and other trace elements in sediments from multiple stations around marine outfalls. EDX may offer a supplementary, relatively cheap and rapid screening method ...Read more
Author:Rouault, Marjolaine J; Mouche, A; Collard, F; Johannessen, JA; Chapron, BDate:Oct 2010Over 2 years of surface current information collected in the Agulhas Current region and derived from the Doppler centroid anomalies of Envisat’s advanced synthetic aperture radar (ASAR) are examined. The sources of errors and potential use ...Read more
Author:Mantlana, Khanyisa B; Maoela, Malebajoa ADate:Dec 2019The set of 17 Sustainable Development Goals (SDGs) and 169 targets aims to move the world to a sustainable trajectory of economic development, environmental sustainability, and social inclusion. This paper presents a review of relevant reports ...Read more
Author:Malahlela, OE; Cho, Moses A; Mutanga, ODate:Jul 2015Globally, subtropical forests are rich in biodiversity. However, the native biodiversity in these forests is threatened by the presence of invasive species such as Chromolaena odorata (L.) King and Robinson, which thrives in forest canopy ...Read more
Author:Rouget, M; Richardson, DM; Nel, JL; Le Maitre, David C; Egoh, Benis N; Mgidi, TDate:Sep 2004Most national or regional initiatives aimed at managing biological invasions lack objective protocols for prioritizing invasive species and areas based on likely future dimensions of spread. South Africa has one of the most ambitious national ...Read more
Author:Letsie, M; Allopi, DDate:Jul 2008The storage of water in the Maqalika reservoir is gradually decreasing as sediment, carried by the natural catchment run-off, accumulates in the reservoir. Moreover, water pumped into the reservoir from the Caledon River (which is heavily ...Read more
Author:De Lange, Willem J; Mahumani, BKDate:Dec 2012The advent of grid electrification in the Sandveld region of South Africa in the 1980s increased the utilisation of groundwater resources for commercial irrigation purposes. In the wake of the consequent increased pressure on the resource, ...Read more
Author:Giffen, MHDate:1971The Gordon’s Bay region occupies the North western corner of false Bay, a large rectangular bay, bounded on the west by the Cape Peninsula ending at Cape Point, on the east by the precipitous slope of the Steenbras Mountains ending at the ...Read more
Author:Mariotti, V; Bopp, L; Tagliabue, A; Kageyama, M; Swingedouw, DDate:Oct 2012Marine sediments records suggest large changes in marine productivity during glacial periods, with abrupt variations especially during the Heinrich events. Here, we study the response of marine biogeochemistry to such an event by using a ...Read more
Author:Taljaard, Susan; Botes, WAMDate:1995In South Africa the ultimate goal in water quality management is to keep the water resources suitable for all ''beneficial uses''. Beneficial uses provide a basis for the derivation of water quality guidelines, which, for South Africa, are ...Read more
Author:Mdakane, Lizwe W; Sibolla, Bolelang H; Haupt, Shelley ADate:Sep 2023Maritime Domain Awareness (MDA) is a key factor in ensuring the security, safety, economy, and environment of the maritime domain. Due to the large size of the EEZ, vessel tracking is essential for security, economy, tourism, and safety. ...Read more
Author:Dabrowski, James M; De Villiers, Johan PDate:May 2015A generative model for modelling maritime vessel behaviour is proposed. The model is a novel variant of the dynamic Bayesian network (DBN). The proposed DBN is in the form of a switching linear dynamic system (SLDS) that has been extended ...Read more
Author:Maspero, EL; Van Dyk, FE; Ittmann, HWDate:Nov 2008As a direct result of the 9-11 New York attack all modes of freight and passenger transportation were scrutinised for vulnerabilities. Over 90% of international trade takes place via sea transport for at least some part of the supply chain ...Read more
Author:Musee, N; Lorenzen, LDate:Jan 2013Market dynamics offer positive (incentive) or negative (disincentive) feedback loops that shape the research needs for, or certain aspects of, a particular technology. Our case study results illustrate how market dynamics have influenced the ...Read more
Author:Thiede, RN; Fabris-Rotelli, IN; Debba, Pravesh; Cleghorn, CWDate:Jun 2023Accessibility analyses are conducted for a variety of applications, including urban planning and public health studies. These applications may aggregate data at the level of administrative units, such as provinces or municipalities. Accessibility ...Read more
Author:Willemse, MG; Siyasiya, CW; Marais, D; Venter, AM; Arthur, Nana KKDate:Feb 2023Although additive manufacturing is fast gaining traction in the industrial world as a reputable manufacturing technique to complement traditional mechanical machining, it still has problems such as porosity and residual stresses in components ...Read more
Author:Mahamood, RM; Akinlabi, ET; Shukla, M; Pityana, Sisa LDate:Feb 2013The economy of using Laser Metal Deposition (LMD) process in the manufacturing of aerospace parts depends on the right processing parameters. LMD is an additive manufacturing technology capable of producing complex parts directly from the CAD ...Read more
Author:Alabi, S; Popoola, API; Popoola, OM; Mathe, Ntombizodwa R; Abdulwahab, MDate:Feb 2023Energy is a requisite factor for technological advancement and the economic development of any society. Currently, global energy demand and supply largel rely on fossil fuels. The use of fossil fuels as a source of energy has caused severe ...Read more