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  • Orthodontic status and treatment need of 12-year-old children in South Africa : an epidemiological study using the dental aesthetic index 
    Drummond, Robert John (University of Pretoria, 2004-11-07)
    The aim of this study was to evaluate the prevalence and severity of malocclusion and orthodontic treatment needs in a sample of 12-year-old South African school children using the Dental Aesthetic Index (DAI), and to ...
  • The orthodontist's views regarding academic education in cleft lip and palate as well as craniofacial deformities in South Africa 
    Ghabrial, Emad; Butow, Kurt-Wilhelm (South African Dental Association, 2021-05)
    BACKGROUND : Orthodontists are essential members of a craniofacial team (American Cleft Palate-Craniofacial Association Team Standards Committee)1. Because cleft lip/palate (CLP) and craniofacial deformities (CFD) vary in ...
  • The orthodox liturgical year and its theological structure 
    Streza, Dan A. (AOSIS, 2021-09-02)
    The concept of ‘liturgical year’ indicates a reference to the meaning of the measuring units of civil time, and especially to the cosmic entities that determine the general rhythm of time – the sun and the moon. ...
  • Orthodox ventriloquism in the pseudo-Ephremic sermon on Palm Sunday 
    Botha, Philippus Jacobus (Department of Ancient Languages, University of Pretoria, 2013)
    One important objection against accepting the authenticity of the Syriac Sermon on Palm Sunday as being from the hand of Ephrem the Syrian, is the use of explicit Trinitarian language in lines 426-431 of the sermon. This ...
  • Orthodoxy and evangelicalism : an overview of their relationship from the perspective of moral values 
    Buda, Daniel (MDPI, 2021-05)
    Orthodox–Evangelical relationships are dominated by proselytism (at least in Eastern Europe and in the former Soviet Union). This is understood as church conversion practiced through unfair means among people who are ...
  • Orthogonality and asymptotics of Pseudo-Jacobi polynomials for non-classical parameters 
    Jordaan, Kerstin Heidrun; Toókos, Ferenc (Elsevier, 2014)
    The family of general Jacobi polynomials P(α,β) n where α, β ∈ C can be characterised by complex (non- Hermitian) orthogonality relations (cf. Kuijlaars et al. (2005)). The special subclass of Jacobi polynomials P(α,β) n ...
  • Orthonormal vector general polynomials derived from the Cartesian gradient of the orthonormal Zernike-based polynomials 
    Mafusire, Cosmas; Kruger, T.P.J. (Tjaart) (Optical Society of America, 2018-06)
    The concept of orthonormal vector circle polynomials is revisited by deriving a set from the Cartesian gradient of Zernike polynomials in a unit circle using a matrix-based approach. The heart of this model is a closed-form ...
  • Orthopaedic litigation in South Africa : a review of the Medical Protection Society data base involving orthopeadic members over the last 10 years 
    East, S.C.; Snyckers, Christian Hugo (Media 24 & South African Orthopaedic Association, 2011)
    BACKGROUND Medical litigation, especially against orthopaedic surgeons, is a worldwide phenomenon with a marked upward trend in the developed nations. There has been a 20% increase over the last five years in South Africa ...
  • Orthopaedic research in Australia : a bibliographic analysis of the publication rates in the top 15 journals 
    Hohmann, Erik; Glatt, Vaida; Tetsworth, Kevin (Wiley, 2017-09)
    BACKGROUND : To investigate the publications rates and characteristics of the authors for manuscripts originating from Australia in the 15 highest ranked orthopaedic journals over a 5-year period. METHODS : The 15 highest ...
  • Orthopaedic surgery training in a post COVID-19 era : a Smith & Nephew travelling fellow perspective 
    Strydom, Sven; Ntombela, Philani (Medpharm Publications, 2023-03)
    The first case of COVID-19 was reported in December 2019, and shortly thereafter, the World Health Organization declared it a worldwide pandemic by March 2020.1 The effects of the pandemic on healthcare systems and its ...
  • The orthopantomograph as an indicator of vertical jaw relations 
    Suliman, Mohamed F.; Dawjee, Salahuddien M. (South African Dental Association, 2018-11)
    INTRODUCTION : Lateral cephalometry is important in the orthodontic diagnosis of jaw relationships, in treatment planning, and prediction of growth but also in the evaluation of different facial forms. Little research has ...
  • Ortodonsie - 'n oorsig en waardebepaling 
    Zietsman S.T.; University of Pretoria. Dept. van Ortodonsie (University of Pretoria, 1976-08-12)
    A historical review of the development of orthodontics is given. The scope, purpose and necessity of the discipline is outlined, including its possible role as a community service. The prevalence of malocclusion in South ...
  • Ortodonsie : 'n oorsig 
    De Muelenaere, J.J.G.G.; University of Pretoria. Dept. of Orthodontics (University of Pretoria, 1983-09-20)
    Orthodontics is a branch of dentistry which is concerned with the study of the growth of the craniofacial complex and the occlusion of teeth. It implies the diagnosis, prevention and treatment of abnormalities in these ...
  • Ortodonsie : in Afrika of vir Afrika 
    Wiltshire, W. A. (William Anthony), 1957-; University of Pretoria. Dept. of Orthodontics (Pretoria : University of Pretoria, 1995-11-09)
    The Department of Orthodontics was founded in 1960 with an independent head of department. After 35 years it is appropriate to delineate the field of study of modern orthodontics and also to set course for the future. ...
  • Ortopedagogiek as praktykgerigte pedagogiekperspektief 
    Van Niekerk, P.A.; University of Pretoria. Dept. Ortopedagogiek (University of Pretoria, 1980-05-01)
    The existing extensive interdisciplinary therapeutic assistance given to the deviant child reveals a conspicuous lack of integrated, pedagogically based insight in its design. Deviant behaviour is usually explained without ...
  • Ortopedie, die ortopeed en die mens 
    Grabe, R.P.; University of Pretoria. Dept. of Orthopaedics (University of Pretoria, 1980-03-20)
    Orthopaedics is one of the oldest branches of medicine and stems from both the surgical and medical facets of medicine. John Hunter, who can be regarded as the father of modern surgery, succeeded in the eighteen century ...
  • Oryx vase 
    Eloff, Fanie; Moloney, Melita (2011)
  • Oscillation-based test applied to a wideband CCII 
    Petrashin, Pablo; Toledo, Luis; Lancioni, Walter; Osuch, Piotr Jan; Stander, Tinus (Hindawi Publishing, 2017)
    Oscillation-based testing (OBT) has been proven to be a simple, yet effective VLSI test for numerous circuit types. This paper investigates, for the first time, the application of OBT verification for second generation ...
  • Oscillation-based test in a CCII-based bandpass filter 
    Osuch, Piotr Jan; Stander, Tinus; Petrashin Pablo; Toledo, Luis; Lancioni, Walter (Institute of Electrical and Electronics Engineers, 2017-02)
    Oscillation based testing (OBT) has proven to be a simple yet effective VLSI test for numerous circuit types. In this work, OBT is applied to test Second-generation Current Conveyor (CCII) based filters for the first ...
  • Oscillatory flow of a conducting Jeffrey fluid in a composite porous medium channel 
    Sreenadh, S.; Prakash, J.; Parandhama, A.; Ravi Kumar, T.V.K. (International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 2014)
    Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.