Browsing Faculty of Engineering by Title

Now showing items 1232-1251 of 2841

    • Fabrication of Josephson junctions using AFM nanolithography 

      Elkaseh, Akram Abdulsalam (Stellenbosch : University of Stellenbosch, 2010-12)
      ENGLISH ABSTRACT: Planar weak link structures, such as micro-bridges, variable thickness bridges and nanobridges, have always attracted a lot of attention. Their potential to behave as real Josephson elements make them ...

    • Fabrication of high-temperature superconducting nanobridges using atomic force microscopy 

      Elkaseh, Akram Abdulsalam (Stellenbosch : University of Stellenbosch, 2006-12)
      The Josephson effect of high-temperature superconducting nanobridge structures is studied worldwide. Until now, nanobridges are generally fabricated with focused ion beam milling on planar thin films. These nanobridges ...

    • The fabrication of PBCO buffered step-edge Josephson junctions 

      Van Staden, Wynand Fourie (2007-03)
      A major challenge in the design and operation of High Temperature Superconducting (HTS) devices is the fabrication of reproducible Josephson junctions with good IcRn products. One objective of this thesis was to fabricate ...

    • Face recognition using Hidden Markov Models 

      Ballot, Johan Stephen Simeon (Stellenbosch : University of Stellenbosch, 2005-03)
      This thesis relates to the design, implementation and evaluation of statistical face recognition techniques. In particular, the use of Hidden Markov Models in various forms is investigated as a recognition tool and ...

    • Facial Feature Reconstruction using Structure from Motion 

      Rautenbach, Pieter Albertus (Stellenbosch : University of Stellenbosch, 2005-03)
      Structure from Motion suggests that an object or scene’s three-dimensional structure can be determined from its observed two-dimensional motion. Human efforts, manifested in computer algorithms, try to mimic the ...

    • Facility design of fruit and vegetable storage at retail outlets : a generic design approach 

      Treurnicht, N.; Nell, T. M.; Stanley, L. A. (South African Institute for Industrial Engineering, 2014)
      ENGLISH ABSTRACT: Fast moving consumer goods retail outlets are constructed on high value properties. Occupation of floor space needs to be limited to the essential minimum, especially for non customer interaction spaces. ...

    • Factors influencing asphalt compactibility and its relation to asphalt rutting performance 

      Douries, William John (Stellenbosch : University of Stellenbosch, 2004-04)
      ENGLISH ABSTRACT: This thesis covers the factors affecting compactibility of hot mix asphalt including gradation, filler/binder ratios, binder types, binder content, polymer modification, temperature, volumetric properties ...

    • Factors that influence the geometric detection pattern of vehicle-based licence plate recognition camera systems 

      Rademeyer, M. C.; Booysen, M. J.; Barnard, A. (Southern African Transport Conference, 2018)
      Licence plate recognition (LPR) systems are used to automatically extract the characters from licence plates positioned in front of a camera. The geometric detection pattern is the region within which the system can ...

    • The failure of concrete retaining block (CRB) walls 

      Agostini, Loren (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: Concrete retaining block (CRB) walls have been identified by ECSA (the Engineering Council of South Africa) as a class of structures prone to failure. In South Africa, four major CRB wall failures occurred ...

    • Fast accurate diphone-based phoneme recognition 

      Du Preez, Marianne (Stellenbosch : University of Stellenbosch, 2009-03)
      Statistical speech recognition systems typically utilise a set of statistical models of subword units based on the set of phonemes in a target language. However, in continuous speech it is important to consider co-articulation ...

    • Fast analysis of a compound large reflector antenna 

      Alphonse, Stephanie (Stellenbosch : Stellenbosch University, 2012-03)
      ENGLISH ABSTRACT: The o set Gregorian dual re ector antenna is eminently well suited to a radio telescope antenna application as it o ers a narrow beam width pattern (i.e high gain) and good e ciency. The focus of this ...

    • Fast design and optimisation of one-dimensional microstrip patch antenna arrays 

      Klopper, Brandt (Stellenbosch : Stellenbosch University, 2016-03)
      ENGLISH ABSTRACT: This thesis proposes a method for the design of one-dimensional, uniformly spaced, nonuniform amplitude microstrip patch antenna arrays using computationally inexpensive transmission-line models and space ...

    • Fast Mesh-based physical optics for large-scale electromagnetic analysis 

      Xiang, Daopu (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: At sufficiently high frequencies, the electrical size of scattering objects become very large. The electromagnetic field simulation of such objects becomes prohibitively expensive with physically rigorous ...

    • Fast multi-core CEM solvers and flux trapping analysis for superconducting structures 

      Jackman, Kyle (Stellenbosch : Stellenbosch University, 2018-03)
      ENGLISH ABSTRACT: The dissertation presents the development of a numerical field solver, called TetraHenry (TTH), for inductance extraction and flux trapping analysis of superconducting integrated circuits. The solver ...

    • Fast parametric modeling of radio astronomy reflector antenna noise temperature 

      De Villiers, Dirk I. L. (Institute of Electrical and Electronics Engineers, 2016)
      This communication presents an approximate method to rapidly estimate the antenna noise temperature of a reflector antenna system as a function of the geometric parameters describing the reflector dishes. The initial ...

    • Fast pyrolysis of corn residues for energy production. 

      Danje, Stephen (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: Increasing oil prices along with the climate change threat have forced governments, society and the energy sector to consider alternative fuels. Biofuel presents itself as a suitable replacement and has ...

    • Fatigue performance of seals 

      Cloete, Romei Christeline (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: Thin bituminous surfacings, in particular sprayed seals, are used quite extensively in various countries because they provide a low cost alternative to conventional asphalt. Seals furthermore provide an ...

    • Fault detection, identification and economic impact assessment for a pressure leaching process 

      Strydom, Johannes Jacobus (Stellenbosch : Stellenbosch University, 2017-12)
      ENGLISH SUMMARY: Modern chemical and metallurgical processes consist of numerous process units with several complex interactions existing between them. The increased process complexity has in turn amplified the effect of ...

    • Fault detection, isolation and reconfiguration for autonomous aircraft 

      Mamela, Sandile Sithandwa Njabulo (Stellenbosch : Stellenbosch University, 2016-12)
      ENGLISH ABSTRACT: This research is a continuation of a series of projects done at the Electronic Systems Laboratory (ESL) that deal with the design and development of Fault Tolerant Control Systems. The focus of this ...

    • Fault tolerant adaptive control of an unmanned aerial vehicle 

      Basson, Willem Albertus (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: This thesis presents the development of an adaptive longitudinal control system for an unmanned aerial vehicle (UAV). The project forms part of a research effort at Stellenbosch University into different ...