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10-year statistical study of double stratopause structure as observed by lidar over a southern sub-tropical site, Reunion Island (21°S, 55°E)

Author: Sivakumar, V ; Faduilhe, D ; Bencherif, H Date: Jul 2006 The lidar data collected for about 10 year’s period from 1994 to 2004 are used for the present study. The recorded raw data is in the form of photon count profiles with a height resolution of 300 m and time resolution of 120s. The method of ... Read more
130000-year-old fossil elephant found near Durban, South-Africa: preliminary-report

Author: Ramsay, PJ ; Smith, AM ; Lee-Thorp, JC ; Vogel, JC ; Tyldsley, M ; Kidwell, W Date: Apr 1993 A modern African elephant tusk was discovered within a late Pleistocene aeolianite at Reunion Rocks, south of Durban. Ionium dating indicates that the tusk is older than 112 kyr BP with stratigraphic control suggesting a date at ca. 130 kyr ... Read more
1910–2010: How infrastructure grew our nation

Author: Wall, K Date: Oct 2010 One hundred years ago this year, South Africa was established by an Act of Union. That Act gave us the shape and the texture that defined us as a nation. And it is wonderful that, despite all the exclusions and discriminations since May 1910, ... Read more
1st review of the status of national air quality: 1994-2004

Author: Taviv, I ; Zunckel, M ; Mahema, T ; John, Juanette ; Naidoo, Mogesh Date: Oct 2006 Need for informed decision making, history of fragmented and un-coordinated monitoring, framework for NAQIS-SAAQIS (output of NAQMPII) and metadata collection (output of NAQMPII). Read more
2 DOF resolution adjustment laser position sensor

Author: Shaik, A ; Tlale, NS ; Bright, G Date: Dec 2008 A low cost sensor system is envisaged that has 2 distinct routes for resolution enhancement in position detection. The main area for application of the sensor design would be in the food processing and packaging industry where position ... Read more
20-year LiDAR observations of stratospheric sudden warming over a mid-latitude site, Observatoire de Haute Provence (44°N, 6°E): Case study and statistical characteristics

Author: Charyulu, DV ; Sivakumar, V ; Bencherif, H ; Kirgis, G ; Hauchecorne, A ; Rao, DN Date: Nov 2007 The present study delineates the characteristics of Stratospheric Sudden Warming (SSW) events observed over the Observatoire de Haute Provence (OHP: 44°N, 6°E). The study uses 20 years of Rayleigh LiDAR temperature measurements for the 1982-2001 ... Read more
The 2011 municipal elections in South Africa and new trends since the 2009 national elections

Author: Greben, JM ; Elphinstone, CD ; Holloway, Jennifer P Date: Sep 2011 The CSIR has been involved in South African election night predictions since 1999 using a cluster prediction model based on the segmentation of the electorate according to voting behavior. In this paper these clusters are exploited in another ... Read more
2014 Election forecast - a post-election analysis

Author: Ittmann, HW ; Holloway, Jennifer P ; Dudeni-Tlhone, Nontembeko Date: Jun 2017 General elections are held every five years in South Africa. During the 12 to 24 hour period after the close of the voting booths, the expected final results are of huge interest to the electorate and politicians. In the past, the Council for ... Read more
The 2020 WMO symposium on climatological, meteorological and environmental factors in the COVID-19 pandemic: A special issue from symposium presentations

Author: Sweijd, Neville ; Zaitchik, BF Date: Jun 2021 The COVID-19 pandemic has become one of the great historical events of the modern era, presenting a generational challenge to the world. Questions about the role of weather on SARS-CoV-2 transmission led to the gathering of scientists at an ... Read more
25m2 target-aligned heliostat with closed-loop control

Author: Roos, TH ; Zwane, NX ; Kruger, E ; Perumal, S ; Cathro, R Date: Sep 2007 A 252m target-aligned research heliostat with closed-loop control, with a theoretical concentration of 80 suns, has been built at CSIR in South Africa. The heliostat has four degrees of freedom: Azimuth, Elevation, Rotation and Pitch. A control ... Read more
2D Methods for pose invariant face recognition

Author: Mokoena, Ntabiseng ; Djonon Tsague, Hippolyte ; Helberg, A Date: Dec 2016 The ability to recognise face images under random pose is a task that is done effortlessly by human beings. However, for a computer system, recognising face images under varying poses still remains an open research area. Face recognition ... Read more
2D numerical model for heat transfer on a laser deposited high entropy alloy baseplate using Comsol Multiphysics

Author: Dada, A ; Popoola, P ; Mathe, Ntombizodwa R ; Adeosun, S ; Aramide, O Date: Dec 2021 In an optimization study, cracks were observed in the microstructures of laser-deposited HEAs on a steel baseplate from residual stresses, thus, the optimization of crack-free microstructures was achieved by the optimization of the laser ... Read more
3-D breast anthropometry of plus-sized women in South Africa

Author: Pandarum, R ; Winnie, Y ; Hunter, Lawrance Date: Sep 2011 Exploratory retail studies in South Africa indicate that plus-sized women experience problems and dissatisfaction with poorly fitting bras. The lack of 3-D anthropometric studies for the plus-size women's bra market initiated this research. ... Read more
3-substituted anilines as scaffolds for the construction of glutamine synthetase and DXP-reductoisomerase inhibitors

Author: Mutorwa, M ; Salisu, S ; Blatch, GL ; Kenyon, C ; Kaye, PT Date: Jan 2009 Access to a series of truncated ATP analogs, as potential anti-tuberculosis agents, has been explored via alkylation and acylation of 3-aminophenol, whereas chloroacetylation, using chloroacetyl chloride, and subsequent Arbuzov phosphonation ... Read more
330 mJ single-frequency Ho:YLF slab amplifier

Author: Strauss, Hencharl J ; Preussler, D ; Esser, MJD ; Koen, W ; Jacobs, Cobus ; Collett, OJP ; Bollig, C Date: Apr 2013 We report on a double-pass Ho:YLF slab amplifier which delivered 350 ns long single-frequency pulses of up to 330 mJ at 2064 nm, with a maximum M(sup2) of 1.5 at 50 Hz. It was end pumped with a diode-pumped Tm:YLF slab laser and seeded with ... Read more
3D edge detection seismic attributes used to map potential conduits for water and methane in deep gold mines in the Witwatersrand basin, South Africa

Author: Manzi, MSD ; Durrheim, RJ ; Hein, KAA ; King, N Date: Sep 2012 Inrushes of ground water and the ignition of flammable gases pose risks to workers in deep South African gold mines. Large volumes of water may be stored in solution cavities in dolomitic rocks that overlie the Black Reef (BLR) Formation, ... Read more
3D evaluation of fine-scale normalised DSMs in urban settings

Author: Breytenbach, Andre Date: Sep 2020 Humankind often needs to accurately model, identify and spatially quantify aboveground phenomena on the Earth’s surface for informed decision-making. Height data derived from digital elevation models (DEMs) is often used to achieve this. This ... Read more
3D mapping and photogrammetry sensor payload for unmanned aerial vehicles

Author: Purdon, Kyla ; Van Niekerk, T ; Phillips, R ; Marais, Stephen T Date: Nov 2023 Unmanned Aerial Vehicles (UAVs) have shown great potential for data collection and monitoring of areas. Sensors such as LiDARs and cameras can be used on UAVs for high-resolution data collection and used for various applications like Digital ... Read more
A 3D potential field model of the Pilanesberg Complex shape and structure

Author: Lee, SA ; Webb, SJ ; Jones, MQW ; Durrheim, RJ ; Ganerød, M Date: Oct 2013 The Mesoproterozoic Pilanesberg Complex, South Africa, is the world’s largest alkaline intrusion. While surface field relationships suggest an inward dipping structure, it is unclear how these dips extend to depth. The 3D geometry of the ... Read more
3D primary grain shapes resulting from semi-solid metal processing

Author: Curle, Ulyate A Date: Jul 2017 The issue regarding globular grain shape and size has been a topic for semi-solid processing since the discovery of the technique. Semi-solid rheo-processing takes advantage of cooling a liquid metal alloy to the solid + liquid phase field, ... Read more

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