Now showing items 2571-2590 of 6082

    • Habitat Modeling of Alien Plant Species at Varying Levels of Occupancy 

      Lemke, D.; Brown, J.A. (University of Canterbury. Mathematics and Statistics, 2012)
      Distribution models of invasive plants are very useful tools for conservation management. There are challenges in modeling expanding populations, especially in a dynamic environment, and when data are limited. In this ...
    • Hand gesture-based interaction in an immersive cinematic environment 

      Khan, Humayun (University of Canterbury, 2017)
      With cheaper head-mounted displays (HMDs) available in the consumer market, new virtual reality (VR) applications are being explored, one such being interactive VR movies. In conventional movies, the user passively watches ...
    • Handheld AR for Collaborative Edutainment 

      Wagner, D.; Schmalstieg, D.; Billinghurst, M. (University of Canterbury. Human Interface Technology Laboratory., 2006)
      Handheld Augmented Reality (AR) is expected to provide ergonomic, intuitive user interfaces for untrained users. Yet no comparative study has evaluated these assumptions against more traditional user interfaces for an ...
    • Handover in Mobile WiMAX Networks: The State of Art and Research Issues 

      Ray, S.; Pawlikowski, K.; Sirisena, H. (University of Canterbury. Computer Science and Software EngineeringUniversity of Canterbury. Electrical and Computer Engineering, 2010)
      The next-generation Wireless Metropolitan Area Networks, using the Worldwide Interoperability for Microwave Access (WiMAX) as the core technology based on the IEEE 802.16 family of standards, is evolving as a ...
    • Hard rock tunnel boring machine penetration test as an indicator of chipping process efficiency 

      Villeneuve MC (2017)
      © 2017 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. The transition from grinding to chipping can be observed in tunnel boring machine (TBM) penetration test data by plotting the penetration rate ...
    • The hardness of wood. 

      Doyle, John (University of Canterbury. Forestry, 1980)
      This investigation covers the development of hardness testing in general, including reference to the considerable work done in this field with metals. Hardness testing of wood is reviewed from the early 19th century to its ...
    • Hardware and software developments for applied digital image processing 

      Bailey, D. G. (University of Canterbury. Electrical and Electronic Engineering, 1985)
      This thesis discusses some of the problems and practices of applying digital image processing to scientific and industrial problems. An interactive image processing system is described. This system has been found to be ...
    • A Hardware Based 3D Room Scanner 

      Ramsay, Robert (University of Canterbury. Electrical and Computer Engineering, 2008)
      This thesis describes a project to create a hardware based 3D interior scanner. This was based on a previous project that created a scanner optimised for interior conditions, using structured light triangulation. The ...
    • Harmonic and interharmonic cross modulation in HVDC links 

      Hume, David James (University of Canterbury, 2002)
      This thesis investigates techniques for modelling the steady state harmonic and interharmonic waveform distortion associated with HVDC links. Previous methods are reviewed and their associated problems discussed. A ...
    • Harmonic domain modelling of direct connected generator and HVDC convertor units. 

      Dinh, Nhut-Quang (University of Canterbury. Electrical and Electronic Engineering, 1998)
      This thesis describes a new method of analysing the harmonic content of direct connected generator-HVdc convertor units. Existing analysis techniques are reviewed, and their strengths and weaknesses are discussed. A set ...
    • Harmonic load modulation in Doherty amplifiers 

      Eccleston, K.W.; Smith, K.J.I,; Mann, S.I.; Gough, P.T. (University of Canterbury. Electrical and Computer Engineering, 2008)
      In a Doherty amplifier employing a class-B main amplifier and a class-C peaking amplifier, harmonics are normally suppressed at each amplifier. If odd harmonic currents generated by the peaking amplifier are permitted to ...
    • Harmonic modelling of transmission systems containing synchronous machines and static convertors 

      Eggleston, J. F. (University of Canterbury. Electrical Engineering, 1985)
      This thesis describes the modelling of the major sources of harmonic distortion in electrical transmission systems, especially those of relevance to the New Zealand power system. The harmonics generated by the operation ...
    • Harmonic performance of heat-pumps 

      Heffernan, W.J.B.; Watson, N.R.; Buehler, R.; Watson, J.D. (University of Canterbury. Electrical and Computer EngineeringUniversity of Canterbury. Electric Power Engineering Centre, 2013)
      Reverse cycle air-source heat-pumps are an increasingly significant load in New Zealand and in many other countries. This has raised concern over the possible impact wide-spread use of heat-pumps will have on the grid. To ...
    • Harmonic response tests on voltage transducers for the New Zealand power system 

      Bradley, D.A.; Bodger, P.S.; Hyland, P.R. (University of Canterbury. Electrical and Computer Engineering, 1985)
    • Harmonic state estimation : error analysis and optimal location for power quality measurements. 

      Bhujel, Diwakar (University of Canterbury, 2017)
      The harmonic levels in a distribution system are becoming more important as the use of non-linear loads and new technology is increasing. Monitoring of the harmonic levels is important in order to manage them. Direct ...
    • Harmonic State Estimation and Transient State Estimation 

      Yu, Kan Chi Kent (University of Canterbury. Electrical and Computer Engineering, 2006)
      This thesis describes the algorithms and techniques developed for harmonic state estimation and transient state estimation, which can be used to identify the location of disturbance sources in an electrical power system. ...
    • Harmonic State Space Model of Three Phase Thyristor Controlled Reactor 

      Orillaza, Jordan Rel Cajudo (University of Canterbury. Electrical and Computer Engineering, 2012)
      Harmonic domain models have been developed for Thyristor Controller Reactors (TCR) and other power electronic devices. Recently, these models have been extended to describe not just the steady-state harmonic interactions ...
    • Harmonic state space modelling of voltage source converters 

      Ormrod, James Ernest (University of Canterbury. Electrical and Computer Engineering, 2013)
      The thesis describes the development of a model of the three-phase Voltage Source Converter (VSC) in the Harmonic State Space (HSS) domain, a Linear Time Periodic (LTP) extension to the Linear Time Invariant (LTI) state ...
    • Harmonic State-Space Modelling of an HVdc Converter with Closed-Loop Control 

      Hwang, Sheng-Pu (University of Canterbury. Electrical and Computer Engineering, 2014)
      Frequency domain models for power electronic circuits are either based on iterative techniques such as Newton's method or linearised around an operating point. Iterative frequency domain models provide great accuracy as ...
    • Harvesting Philosopher's Wool: A Study in the Growth, Structure and Optoelectrical Behaviour of Epitaxial ZnO 

      Lee, William (Chun-To) (University of Canterbury. Electrical and Computer Engineering, 2008)
      This thesis is about the growth of ZnO thin films for optoelectronic applications. ZnO thin films were grown using plasma assisted molecular beam epitaxy and were studied using various conventional and novel characterisation ...