Author:Gelderblom, H; Kotzé, PaulaDate:Oct 2008The majority of guidelines and principles for design of technology are aimed at products for adults. The limited guidelines available for design of young children’s technology do not focus sufficiently on age-related requirements or they offer ...Read more
Author:Engelbrecht, L; Botha, Adèle; Alberts, RDate:Apr 2015The construction of an artifact to visually represent information is usually required by Information Visualization research projects. The end product of design science research is also an artifact and therefore it can be argued that design ...Read more
Author:Snedden, Glen C; Roos, TH; Naidoo, KavendraDate:Sep 2003Previous simulations of a turbojet disc cavity with full Navier-Stokes CFD and simplified geometry and boundary conditions have been improved to reduce the level of approximation. A new grid was built using a multi-block approach. The case ...Read more
Author:Cooper, Antony K; Moellering, H; Hjelmager, J; Rapant, P; Laurent, D; Abad, P; Danko, DDate:Nov 2009The Commission on Geospatial Data Standards of the International Cartographic Association (ICA) is working on defining formal models and technical characteristics of Spatial Data Infrastructures (SDI). The Commission has already presented ...Read more
Author:Kortidis, Ioannis; Swart, HC; Ray, Suprakas S; Motaung, David EDate:Mar 2019An unceasing scientific challenge to monitor the emissions of toxic and flammable gases in a selective approach is of great importance for safety of human health. As a result, herein, we report on the detailed study of the gas sensing ...Read more
Author:Nel, Willem AJ; Stanton, D; Abdul Gaffar, MYDate:Oct 2009ISAR imagery of ships are complicated by the 3-D motion of the target, which causes blurring in the imagery. A technique is proposed which could help detect such motion and prove useful to both analyse the 3-D motion as well as possibly help ...Read more
Author:Keet, CMDate:Oct 2012OWL 2 DL is a very expressive language and has many features for declaring complex object property expressions. Standard reasoning services for OWL ontologies assume the axioms in the "object property box" to be correct and according to the ...Read more
Author:Gibson, L; Engelbrecht, Jeanine; Rush, DDate:Sep 2019Increasing global urbanisation is leading to a rise in the number of people living in informal settlements, challenging our ability to achieve sustainable development goals. As a consequence of high building density, inadequate building methods ...Read more
Author:Wessels, Konrad J; Steenkamp, Karen C; Von Maltitz, Graham P; Archibald, SDate:2011Vegetation phenology refers to the timing of seasonal biological events (for example, bud burst, leaf unfolding, vegetation growth and leaf senescence) and biotic and abiotic forces that control these. Daily, coarse-resolution satellite imagery ...Read more
Author:Salmon, BP; Kleynhans, W; Van den Bergh, F; Olivier, JC; Wessels, Konrad JDate:Jul 2012In this paper, the internal operations of an Extended Kalman Filter is investigated to see if any useful information can be derived to detect land cover change in a MODIS time series. The Extended Kalman Filter expands its internal covariance ...Read more
Author:Kleynhans, W; Salmon, BP; Olivier, JC; Van den Bergh, F; Wessels, Konrad J; Grobler, TDate:Jul 2012There has been recent developments in the use of hypertemporal satellite time series data for land cover change detection and classification. Recently, an Autocorrelation function (ACF) change detection method was proposed to detect the ...Read more
Author:Pieterse, Heloise; Olivier, M; Van Heerden, Renier PDate:Aug 2018Ever improving technology allows smartphones to become an integral part of people's lives. The reliance on and ubiquitous use of smartphones render these devices rich sources of data. This data becomes increasingly important when smartphones ...Read more
Author:Kleynhans, W; Salmon, BP; Olivier, JCDate:Oct 2015Recent times have seen a significant increase in the amount of readily available SAR data, with many current and historic SAR data holdings now adopting an open distribution policy. As more regular SAR observations are becoming available, the ...Read more
Author:Kleynhans, W; Salmon, BPDate:Jul 2014The detection of new informal settlements in South Africa using time-series data derived from coarse resolution satellite imagery has recently been an active area of research. Most of the previous methods presented using hyper-temporal satellite ...Read more
Author:Magidimisha, Edwin; Faniso-Mnyaka, Zimbini; Naidoo, Seelenthren; Nana, Muhammad ADate:Apr 2023The severity of wildland vegetation fires is expected to grow in response to climate change. Therefore, the price of combating fires will likewise go up while still posing a serious risk to the firefighters. Various countries have invested ...Read more
Author:Uys, H; Biercuk, M; Britton, JW; Van Devender, AP; Bollinger, JJDate:Sep 2010This article reports on a calibrated measurement of 174 Yoctonewton using a cloud of 60 9 Be+ ion confined in a Penning ion trap. These measurements suggest that ion traps may form the basis of a new class of ultrasensitive deployable force sensors.Read more