Author:Lord, RT; Nel, Willem AJ; Abdul Gaffar, MYDate:May 2006Conventional Inverse Synthetic Aperture Radar (ISAR) utilises the rotational motion of a target such as a ship or an aircraft to obtain a 2-D image of the target’s radar cross section (RCS) profile from a coherent radar system. This concept ...Read more
Author:Mgangira, Martin B; Xungu, Sipho A; Giani, John CDate:Jul 2018The deterioration of the aggregate material used in road construction is of concern as it affects the overall long term stability of the road pavement and should be minimised by using durable aggregates. The paper presents proof of concept ...Read more
Author:Ndlovu, GF; Asante, JKO; Roos, WD; Hillie, KTDate:Jul 2011This work present an in situ Variable Temperature Scanning Tunneling Microscopy (VT-STM) study of the Sb/Cu(111) system studied at various temperatures. The experimental data support a structural model in which Sb atoms displace up to 1/3 of ...Read more
Author:Makamba, MDate:Mar 2016The proliferation of service technology stimulated the increase usage of services. Services are distinct, loosely coupled units of functionalities that are self-contained. These services are developed by various vendors without following ...Read more
Author:Brown, Dane; Bradshaw, KDate:May 2016There are a lack of multi-modal biometric fusion guidelines at the feature-level. This paper investigates face and fingerprint features in the form of their strengths and weaknesses. This serves as a set of guidelines to authors that are ...Read more
Author:Shatalov, MY; Joubert, SV; Voges, EDate:Jul 2007Vibrating patterns of distributed oscillating structures, subjected to rotation, also turn in the direction of inertial revolution but with different angular rates, which depend on the geometry of the structures, the number of modes, etc. ...Read more
Author:Padayachi, YR; Thambiran, Tirusha; Naidoo, M; Garland, Rebecca M; Phala, NDate:Oct 2014A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. ...Read more
Author:Padayachi, YR; Thambiran, Tirusha; Naidoo, M; Garland, Rebecca M; Phala, NDate:Oct 2014A study of ozone monitoring data in Johannesburg highlighted that the city is frequently affected by high ozone episodes. There is limited knowledge about the chemical and meteorological drivers of these high ozone episodes in Johannesburg. ...Read more
Author:Kathree, U; Nel, Willem AJ; Van Rensburg, VJ; Mishra, AKDate:Oct 2015In the field of radar, High Range Resolution (HRR) profiles are often used to improve target tracking accuracy in range and to allow the radar system to produce an image of an object using techniques such as inverse synthetic aperture radar ...Read more
Author:Belyi, VN; Kazak, NS; Khilo, NA; Forbes, A; Ropot, PIDate:Aug 2009The spectrum of spatial frequencies (SFS) of Bessel beams properties emerging at their spatial localization is investigated. The case, when limiting aperture has a circular shape and a center at any distance from the optical axis, was studied. ...Read more
Author:Lekoadi, Paul M; Maledi, N; Tlotleng, Monnamme; Masina, Bathusile NDate:Feb 2020The investigation of microstructural and hardness properties of high-speed selective laser melted (SLM) produced Ti6Al4V coupons after various heat treatments. Heat treatment was performed in order to homogenize and improve the microstructure ...Read more
Author:Lekoadi, Paul M; Maledi, N; Tlotleng, Monnamme; Masina, Bathusile NDate:Nov 2018This study presents an investigation of the effect of different heat treatments on the microstructure of Ti6Al4V fabricated components produced by high speed selective laser melting. 10 mm x 10 mm x 10 mm cubes were heat treated in an inert ...Read more
Author:Sprung, D; Sucher, E; Ramkilowan, A; Griffith, DJDate:Sep 2014Optical turbulence represented by the structure function parameter of the refractive index C(subn)(sup2) is a relevant parameter for the performance of electro-optical systems and characterization of the atmospheric influence on imaging. It ...Read more
Author:Matogoro, J; Mfupe, Luzango P; Mvungi, N; Anatory, JDate:Oct 2021A study was conducted to investigate radio propagation characteristics in ultra-high frequency (UHF) bands over straight and circular paths in central Tanzania. The received signal power values (in dBm) were collected using a spectrum analyzer ...Read more
Author:Machaka, P; Bagula, ADate:2015The paper seeks to investigate the use of scalable machine learning techniques to address anomaly detection problem in a large Wi-Fi network. This was in the efforts of achieving a highly scalable preemptive monitoring tool for wireless ...Read more
Author:Komba, Julius J; Mgangira, Martin B; Mohale, LDate:Jul 2016The fundamental shape/morphological properties of coarse aggregates including form, angularity, and surface texture are known to influence the performance of pavements. The coarse aggregate shape properties are affected by many factors, amongst ...Read more