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Browsing by Subject "Monitoring"

Now showing items 1-16 of 16

Can human-induced land degradation be distinguished from the effects of rainfall variability? A case study in South Africa

Author: Wessels, Konrad J ; Prince, SD ; Malherbe, Johan ; Small, J ; Frost, PE ; Van Zyl, D Date: Jan 2007 Advanced Very High Resolution Radiometer (AVHRR), Normalized Difference Vegetation Index data (NDVI, I km (2), 1985-2003) and modelled net primary production (NPP, 8 km (2), 1981-2000) data were used to estimate vegetation production in South ... Read more
Characterization of particulate matter in the process of manufacturing titanium metal powder

Author: Madzivhandila, Thingahangwi ; Maledi, N ; Fazluddin, Shahed Date: Apr 2020 Working in the metal powder production environment may result in a high level of particulate matter, which might pose a health threat. The main objective of this study is to determine the amount and type of the particles that might be emitted ... Read more
Four decades of water recycling in Atlantis (Western Cape, South Africa): Past, present and future

Author: Bugan, Richard DH ; Jovanovic, Nebojsa ; Israel, S ; Tredoux, G ; Genthe, Bettina ; Steyn, Maronel ; Allpass, D ; Bishop, R ; Marinus, V Date: Oct 2016 The primary aquifer at Atlantis (Western Cape, South Africa) is ideally suited for water supply and the indirect recycling of urban stormwater runoff and treated domestic wastewater for potable purposes. The relatively thin, sloping aquifer ... Read more
A generalized Web Service response time metric to support collaborative and corroborative Web Service monitoring

Author: Makitla, I ; Mtsweni, Jabu S Date: Dec 2015 In this paper, we describe the development of a generalized metric for computing response time of a web service. Such a generalized metric would help to develop consensus with regards to the meanings of contracted Quality of Service (QoS) ... Read more
A global network for monitoring ocean acidification

Author: Celliers, Louis ; Monteiro, Pedro MS Date: Oct 2012 This international workshop was convened in order to develop a proposal for an integrated global observing network for both carbon and ocean acidification that addresses the requirements of nations affected by this emerging environmental ... Read more
Knysna Estuary health: ecological status, threats and options for the future

Author: Claassens, L ; Barnes, RSK ; Wasserman, J ; Lamberth, SJ ; Miranda, AF ; Van Niekerk, Lara ; Adam, JB Date: Mar 2020 The Knysna Estuary is South Africa's most important estuary in terms of conservation, containing an estimated 42% of all estuarine biodiversity. Despite formal protection the estuary is open access and vulnerable to resource exploitation, ... Read more
Monitoring and maintenance of coastal structures

Author: Phelp, D Date: Apr 2005 Annual monitoring of a breakwater provides an early warning system to identify any weak spots in the armouring which can then be repaired before the overall stability of the breakwater is threatened. Read more
Monitoring changes in genetic diversity

Author: Bruford, MW ; Davies, N ; Dulloo, ME ; Faith, DP ; Walters, Michele Date: 2018 DNA is the most elemental level of biodiversity, drives the process of speciation, and underpins other levels of biodiversity, including functional traits, species and ecosystems. Until recently biodiversity indicators have largely overlooked ... Read more
No evidence-based restoration without a sound evidence base: a reply to Guldemond et al.

Author: Ntshotsho, Phumza ; Reyers, B ; Esler, KJ Date: Mar 2012 Evidence-based practice is not possible without an evidence base. Guldemond et al. confuse our attempt at assessing the status of the evidence base of restoration programs in South Africa with attempting to assess whether restoration is ... Read more
Potable water quality monitoring: A survey of intelligent techniques

Author: Ntshako, N ; Markus, ED ; Masinde, M ; Abu-Mahfouz, Adnan MI Date: Nov 2019 Water quality is of immense importance to the general health and safe livelihoods of citizens. This paper presents a survey of various water monitoring techniques with a view to check the quality of potable water available to the general ... Read more
Rangeland monitoring and assessment: a review

Author: Ramoelo, Abel ; Stolter, C ; Joubert, D ; Cho, Moses A ; Groengroeft, A ; Madibela, OR ; Zimmermann, I ; Pringle, H Date: Apr 2018 Rangelands provide vast landscapes for grazing and foraging for livestock and wildlife. Services of rangelands are diverse and generally provide food for millions of the world’s population, especially the rural and sometimes poor communities. ... Read more
Reconfigurable materials handling system incorporating part tracking, routing and scheduling

Author: Naidu, P ; Bright, G ; Tlale, NS Date: Jul 2006 Reconfigurable manufacturing systems refer to the ability to vary the manufacturing process such that customized products can be manufactured on a large scale. Customization should not impair the production rate of any of the part assemblies. ... Read more
The role of earth observation, with a focus on SAR Interferometry, for sinkhole hazard assessment

Author: Theron, Andre ; Engelbrecht, Jeanine Date: Sep 2018 Sinkholes are global phenomena with significant consequences on the natural- and built environment. Significant efforts have been devoted to the assessment of sinkhole hazards to predict the spatial and temporal occurrence of future sinkholes ... Read more
Subsidence feature discrimination using deep convolutional neral networks in synthetic aperture radar imagery

Author: Schwegmann, Colin P ; Kleynhans, Waldo ; Engelbrecht, Jeanine ; Mdakane, Lizwe W ; Meyer, Rory GV Date: Jul 2017 Effective detection and discrimination of surface deformation features in Synthetic Aperture Radar imagery is one of the most important applications of the data. Areas that undergo surface deformation can pose health and safety risks which ... Read more
Use of sentinel-1 data for vessel detection in South African oceans: Early results

Author: Kleynhans, Waldo ; Salmon, Brian P ; Schwegmann, Colin P ; Mdakane, Lizwe W Date: Aug 2015 This paper shows the utility of Synthetic Aperture Radar (SAR) data acquired from the recently launched Sentinel-1 satellite for the detection of vessels within the South African Exclusive Economic Zone (EEZ). A Sentinel-1 dual polarized (HH ... Read more
What lies beneath: detecting sub-canopy changes in savanna woodlands using a three-dimensional classification method

Author: Fisher, JT ; Witkowski, TF ; Erasmus, BFN ; Mograbi, PJ ; Asner, GP ; Van Aardt, JAN ; Wessels, Konrad J ; Mathieu, Renaud SA Date: Jul 2015 Question: Increasing population pressure, socio-economic development and associated natural resource use in savannas are resulting in large-scale land cover changes, which can be mapped using remote sensing. Is a three-dimensional (3D) woody ... Read more

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