Author:Dye, PJ; Jacobs, SDate:17 May 2004The South African forestry industry perceives Process-based forestry models as important tools for improving predictions of growth and water use in forest plantations. The 3-PG process-based forest model was evaluated in South Africa using ...Read more
Author:Botha, LDate:Mar 2007This paper looks at the suitability of using the CADRCS RCS prediction tool for research into a class of NCTR work where the radar will give a high resolution output of the target, either a High Range Resolution (HRR) plot or Inverse Synthetic ...Read more
Author:Davel, MH; De Wet, FebeDate:Sep 2010The authors describe a new language-independent technique for automatically identifying errors in an electronic pronunciation dictionary by analyzing the source of conflicting patterns directly.They evaluate the effectiveness of the technique ...Read more
Author:Mthethwa, Sthembile; Dlamini, Nelisiwe PDate:Mar 2018Hardcopy document forgery is still a challenge and occurs frequently nowadays. Many countries have reported a lot of cases, including South Africa where government issues documents are forged. Protecting these documents from being tampered ...Read more
Author:Seotsanyana, M; Geldenhuys, JDate:Nov 2009The ever-increasing reliance of society on computers has led to a need for highly reliable systems. Computer systems perform critical functions in a number of areas ranging from online transaction processing (such as banking systems) to ...Read more
Author:Chetty, A; Kovács, J; Sulyok, Zs; Mészáros, A; Fekete, J; Domján, A; Szilágyi, A; Vargha, VDate:Jan 2013Poly(N-isopropylacrylamide-co-N,N"-methylene-bisacrylamide) (P(NIPAAm-co-MBA)) hydrogels were prepared in water using redox initiator. The copolymer composition at high conversion (> 95%) was determined indirectly by HPLC (high performance ...Read more
Author:De Villiers, J; Jermy, R; Nicolls, FDate:May 2014This paper presents a system to determine the photogrammetric parameters of a camera. The lens distortion, focal length and camera six degree of freedom (DOF) position are calculated. The system caters for cameras of different sensitivity ...Read more
Author:Thackeray, MM; Rossouw, MH; De Kock, A; De la Harpe, AP; Gummow, RJ; Pearce, K; Liles, DCDate:15 Mar 1993Manganese dioxide has for many years found widespread use as a cathode material in aqueous Leclanche, zinc chloride and alkaline cells and, more recently, in nonaqueous lithium cells. However, despite the large number of polymorphic structures ...Read more
Author:Hakl, H; Le Roux, WHDate:Dec 2008Understanding airspace activity is essential for airspace control. Being able to detect vertical activity in aircraft allows prediction of aircraft intent, thereby allowing more accurate situation awareness and correspondingly more appropriate ...Read more
Author:Giddy, IS; Fer, I; Swart, S; Nicholson, Sarah-AnneDate:May 2023The seasonal warming of Antarctic Winter Water (WW) is a key process that occurs along the path of deep water transformation to intermediate waters. These intermediate waters then enter the upper branch of the circumpolar overturning circulation. ...Read more
Author:Schwegmann, Colin P; Kleynhans, Waldo; Salmon, BP; Mdakane, Lizwe W; Meyer, Rory GVDate:Jul 2016Efficient and effective ship discrimination across multiple Synthetic Aperture Radar sensors is becoming more important as access to SAR data becomes more widespread. A flexible means of separating ships from sea is ideal and can be accomplished ...Read more
Author:Meyer, Rory GV; Schwegmann, Colin P; Kleynhans, WaldoDate:Jul 2017Detections and classification of non-AIS-compliant vessels is an important ability for countries or institutions interested in MDA. SAR has been proven to be an effective method but there exists a trade-off between the area that can be imaged ...Read more
Author:Tulsi, K; Phelp, D; O'Connor, PDate:May 2014Physical model studies were conducted of a 250K DWT fully laden iron ore vessel grounding on the side slopes of the outbound channel at a major Australian port. A key deliverable of the study was to estimate the tug force required to pull the ...Read more
Author:Cooper, Antony KDate:Nov 2015This presentation discusses the differences between meanings of various geographical information definitions.Read more
Author:Aderonmu, AI; Rotimi, AH; Masonta, Moshe T; Mzyece, MDate:Nov 2012Radio Frequency (RF) spectrum is a natural resource widely used by wireless network operators to provide radio communications or transmission systems (e.g. telephone operators and TV broadcast stations). Scarcity of RF spectrums has led to ...Read more
Author:Strydom, Anria; Els, PSDate:Jun 2014Stabilised platforms are regularly integrated with vehicles in various applications such as terrain mapping and surveillance. The equipment installed on the platform is often sensitive to motion and has to be isolated from unnecessary vibrations. ...Read more
Author:Shatalov, MY; Joubert, SV; Coetzee, CEDate:Dec 2011As among other seismological observations, it is important to be able to predict the location of the vibrating pattern of an earthquake. In this chapter, the authors take the first tentative steps towards including "Bryan’s effect" in a ...Read more
Author:Shatalov, MY; Lunin, BSDate:May 2007Simple mathematical model of vibratory gyroscopes imperfections is formulated, which includes anisotropic damping and variation of mass-stiffness parameters and their harmonics. The method of identification of parameters of the mathematical ...Read more
Author:Skosana, Vusi J; Abu-Mahfouz, Adnan MIDate:Nov 2020Wireless multimedia sensor networks (WMSNs) make possible diverse and demanding monitoring and surveillance applications. The WMSNs have to operate with significant energy, memory and processing power constraints. These constraints make video ...Read more