Institutional Repository | North-West University | NWU: Recent submissions
Now showing items 18841-18860 of 35819
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Nonlinearly self–adjoint, conservation laws and solutions for forced BBM equation
(Hindawi Publishing Corporation, 2014)We study a forced Benjamin-Bona-Mahony (BBM) equation. We prove that the equation is not weak self-adjoint; however, it is nonlinearly self-adjoint. By using a general theorem on conservation laws due to Nail Ibragimov and ... -
Modelling the formation of liver zones within the scope of fractional order derivative
(Hindawi Publishing Corporation, 2014)We develop and extend earlier results related to mathematical modelling of the liver formation zone by the adoption of noninteger order derivative. The hidden uncertainties in the model are captured and controlled thanks ... -
Model of break–bone fever via beta–derivatives
(Hindawi Publishing Corporation, 2014)Using the new derivative called beta-derivative, we modelled the well-known infectious disease called break-bone fever or the dengue fever. We presented the endemic equilibrium points under certain conditions of the physical ... -
Investigating maternal effects on production traits in Duroc pigs using animal and sire models
(Wiley, 2014)Variance components for production traits were estimated using different models to evaluate maternal effects. Data analysed were records from the South African pig performance testing scheme on 22 224 pigs from 18 herds, ... -
Factors explaining child survival in Ethiopia: application of two-stage probit model
(WIley, 2014)Policymakers in many developing countries had been mandated to pursue the goal of reducing child mortality as one of the Millennium Development Goals (MDGs). This paper analyses the factors influencing child survival in ... -
Extraction of molasses from sugar crystals in a centrifuge
(Taylor & Francis, 2014)Massecuite is a mixture of sugar crystals and molasses produced during the manufacture of sugar. A centrifuge, which is a rotating cylindrical basket, is used to separate the sugar crystals from the molasses. Water and ... -
Stability and hopf bifurcation analysis on a bazykin model with delay
(Hindawi Publishing Corporation, 2014)The dynamics of a prey-predator system with a finite delay is investigated. We show that a sequence of Hopf bifurcations occurs at the positive equilibrium as the delay increases. By using the theory of normal form and ... -
Group classification of a general bond–option pricing equation of mathematical finance
(Hindawi Publishing Corporation, 2014)We carry out group classification of a general bond-option pricing equation. We show that the equation admits a three-dimensional equivalence Lie algebra. We also show that some of the values of the constants which result ... -
Existence of wave front solutions of an integral differential equation in nonlinear nonlocal neuronal network
(Hindawi Publishing Corporation, 2014)An integral-differential model equation arising from neuronal networks with very general kernel functions is considered in this paper. The kernel functions we study here include pure excitations, lateral inhibition, lateral ... -
Inhibition effect of cefradine on corrosion of mild steel in HCI solution
(EbscoHost, 2014)The corrosion inhibition properties of cefradine (CFD) for mild steel corrosion in HCl solution were analysed by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and gravimetric methods. Potentiodynamic ... -
A fractional SEIR epidemic model for spatial and temporal spread of measles in metapopulations
(Hindawi Publishing Corporation, 2014)Measles is a higher contagious disease that can spread in a community population depending on the number of people (children) susceptible or infected and also depending on their movement in the community. In this paper we ... -
Interface of a digital temparature microcontroller with an analog incubator
(Taylor & Francis, 2014)A plug-and-play type digital temperature control system was developed and tested. The software designed for the controller implemented 100% duty cycle for temperature errors of 2°C or more and a 25% duty cycle for temperature ... -
Burnout and work engagement of academics in higher education institutions: effects of dispositional optimism
(Wiley, 2014)The aim of this study was to investigate the relationships among dispositional optimism, job demands and resources, burnout, work engagement, ill health and organizational commitment of South African academic staff in ... -
Key factors that influence the diffusion and infusion of information and communication technologies in Kenyan higher education
(Taylor & Francis, 2014)Previous studies have shown that in the higher education sector, information and communication technology (ICT) provides the impetus for change from the traditional concepts of teaching and learning, as well as prime ... -
Towards universal free primary education in Kenya: challenges and opportunities
(Inderscience Publishers, 2014)This study seeks to formulate strategies for funding and, hence, sustainability of FPE in Kenya as the country seeks to achieve the millennium development goals by 2015 in accordance with the United Nations declaration. ... -
Exact Solutions of Fragmentation Equations with General Fragmentation Rates and Separable Particles Distribution Kernels
(Hindawi Publishing Corporation, 2014)We make use of Laplace transform techniques and the method of characteristics to solve fragmentation equations explicitly. Our result is a breakthrough in the analysis of pure fragmentation equations as this is the first ... -
Corrosion Inhibition of Carbon Steel in 1M HCI Solution by 2–amino–1–methylbenzene (2–methylaniline)
(ESG, 2014)The inhibition effect of 2-amino-1-methylbenzene (AMB) on the corrosion of carbon steel in 0.5 M H₂SO₄ was studied by weight loss, electrochemical impedance spectroscopy (EIS) techniques and potentiodynamic ... -
Overview of the market abuse regulation under the financial markets Act 19 Of 2012
(Sabinet, 2014)This paper analyses the regulation of market abuse under the Financial Markets Act 19 of 2012 in order to investigate the adequacy of such regulation as regards to the combating of market-abuse practices in South Africa. ... -
A non–member spouse's entitlement to the member's pension interest
(P.E.R, 2014)It is important that married couples seek legal advice with regard to the assets falling within their joint estate, more particularly their retirement benefits. This article reflects on the entitlement (if any) of non-member ... -
Government debt in Greece: an empirical analysis
(Virtus Interpress, 2014)Greek government debt has been increasing above the percentage stated in the growth and stability path from 112.9% in 2008 to 175.6% in 2013. This paper investigates the determinants of the general government debt in Greek ...
