Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 307-326 of 550

    • Handwritten signature verification : a hidden Markov model approach 

      Le Riche, Pierre (Pierre Jacques) (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: Handwritten signature verification (HSV) is the process through which handwritten signatures are analysed in an attempt to determine whether the person who made the signature is who he claims to ...

    • Handwritten signature verification using hidden Markov models 

      Sindle, Colin (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: Handwritten signatures are provided extensively to verify identity for all types of transactions and documents. However, they are very rarely actually verified. This is because of the high cost of ...

    • Harmonic interaction between weak AC systems and VSC-based HVDC schemes 

      Krige, Ernst (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: The implementation of the Caprivi Link Interconnector (CLI) High Voltage Direct Current (HVDC) scheme in 2010 connecting the weak Namibian and Zambian Alternating Current (AC) transmission networks via ...

    • Harmonic mixer analysis and design 

      Van der Merwe, Marius (Stellenbosch : Stellenbosch University, 2002-03)
      ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra ...

    • High power LDMOS L-band radar amplifiers 

      McIver, Stuart Roderick Arthur (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: The thesis details the design, construction and experimental evaluation of 30W, 35W and 250W L-Band LDMOS Radar amplifiers. Each amplifier module contains an integrated high speed power supply in order ...

    • High voltage DC-DC converter using a series stacked topology 

      Van Rhyn, P. D. (Stellenbosch : University of Stellenbosch, 2006-03)
      This thesis presents the design and implementation of a high voltage DC-DC converter using a series stacked topology. The converter’s specifications were set by Spoornet and the converter forms part of a DC-AC inverter ...

    • High-power broadband absorptive waveguide filters 

      Stander, Tinus (Stellenbosch : University of Stellenbosch, 2009-12)
      ENGLISH ABSTRACT: This dissertation presents a synthesis method for broadband high-power absorptive microwave lters by cascading a wide stop-band wa e-iron lter with an absorptive harmonic pad. The classical image ...

    • High-Temperature Superconductor Step-Edge Fabrication for the Implementation of RSFQ Circuits 

      Snetler, Lukas Hendrick (Stellenbosch : University of Stellenbosch, 2005-03)
      High-temperature superconductive (HTS) logic has become a large research field worldwide. The HTS advantages compared to the low-temperature circuits are the reduced cooling requirements, increased or comparable operation ...

    • Higher order hierarchal curvilinear triangular vector elements for the finite element method in computational electromagnetics 

      Marais, Neilen (Stellenbosch : Stellenbosch University, 2003-03)
      ENGLISH ABSTRACT: The Finite Element Method (FEM) as applied to Computational Electromagnetics (CEM), can be used to solve a large class of Electromagnetics problems with high accuracy, and good computational efficiency. ...

    • An HMM-based automatic singing transcription platform for a sight-singing tutor 

      Krige, Willie (Stellenbosch : Stellenbosch University, 2008-03)
      A singing transcription system transforming acoustic input into MIDI note sequences is presented. The transcription system is incorporated into a pronunciation-independent sight-singing tutor system, which provides ...

    • Hot electron bolometer sensors for millimetre-wave and terahertz wave detection 

      Northeast, David Bernard (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: The design and simulation of hot electron bolometer sensors for the detection of millimeter and terahertz wave radiation is presented. These devices can be used for the formation of images or for ...

    • Hover control for a vertical take-off and landing vehicle 

      Wilson, John E. (Stellenbosch : University of Stellenbosch, 2009-03)
      This thesis details the development and comparison of two linear control systems that performhover control for a vertical take-off and landing unmanned aerial vehicle. A non-linear mathematical model of the aircraft ...

    • hp-Adaptation for the FEM Analysis of Waveguides 

      Lezar, Evan (Stellenbosch : Stellenbosch University, 2008-03)
      The nite element method (FEM) is a powerful tool for the computational analysis of a wide range of electromagnetic problems. As the complexity of the problems is increased so are the demands in terms of the computational ...

    • Human-computer interface using a web camera 

      Ellis, Loftie (Stellenbosch : University of Stellenbosch, 2007-12)
      In this thesis we present a human-computer interface (HCI) system for disabled persons using only a basic web camera. Mouse movements are simulated by small movements of the head, while clicks are simulated by eye blinks. ...

    • HV Transmission line and tower inspection safe-fly zone modelling and metrology 

      Groch, Matthew (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: The deployment of Unmanned Aerial Vehicles (UAV) for power line inspection requires the definition of safe-fly zones. Transient Over-Voltages (TOVs) on the Overhead Transmission Lines (OHTLs) put the ...

    • Hybrid Finite Element/Boundary Element solutions of general two dimensional electromagnetic scattering problems 

      Meyer, Frans J. C. (Frans Johannes Christiaan) (Stellenbosch : Stellenbosch University, 1991-02)
      ENGLISH ABSTRACT: A two-dimensional Coupled Element Method (CEM) for solving electromagnetic scattering problems involving lossy, inhomogeneous, arbitrarily shaped cylinders, was investigated and implemented. The CEM ...

    • A hybrid MoM/PO technique with large element PO 

      Nazo, Syanda (Stellenbosch : Stellenbosch University, 2012-03)
      ENGLISH ABSTRACT: Radar Cross Section (RCS) is an important parameter in radar engineering. Often, electrically large structures are of interest in RCS analysis due to the high operating frequencies of radar systems. ...

    • A hybrid peer-to-peer middleware plugin for an existing client/server massively multiplayer online game 

      Croucher, Darren Armstrong (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: Massively Multiplayer Online Games are large virtual worlds co-inhabited by players over the Internet. As up to thousands of players can be simultaneously connected to the game, the server and network ...

    • Identification of driving manoeuvres using smartphone-based GPS and inertial forces measurement 

      Engelbrecht, Jarrett (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: Road accidents are a growing concern for governments and is rising to become one of the leading causes of death in developing countries. Aggressive driving is one of the major causes of road accidents, ...

    • Identity confidence estimation of manoeuvring aircraft 

      Holtzhausen, Petrus Jacobus (Stellenbosch : University of Stellenbosch, 2006-12)
      A radar system observes an aircraft once during each scan of the airspace, and uses these observations to construct a track representing a possible route of the aircraft. However when aircraft interact closely there is the ...