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Research Articles (Statistics): Recent submissions
Now showing items 441-460 of 487
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(South African Statistical Association, 2012-11)The estimation of a location parameter of the normal distribution has been widely discussed and applied in various situations. The Bayes estimators under Linear Exponential (LINEX) loss are functions of the moment ...
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(South African Statistical Journal, 2012-11)Please read abstract in article.
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(South African Statistical Association, 2012-11)We present an overview of some image segmentation techniques, employed to extract regions of interest. Examples, with comparisons, are presented for Iterative Selection, Balanced Histogram, Otsu’s method, Wellner algorithm, ...
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(South African Statistical Association, 2012-11)We present a historical and theoretical overview of the more complicated and less used G/M and M/G queueing processes, which allow for non-specific arrival and service time distributions. Such a model provides a more ...
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(South African Statistical Association, 2012-11)Ecological studies naturally result in correlated data. Ignoring these correlations can result in biased estimation of ecological effects jeopardizing the integrity of the scientific inference. Mixed effects models are ...
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(South African Statistical Association, 2012)We present an overview of some image segmentation techniques, employed to extract regions of interest. Examples, with comparisons, are presented for Iterative Selection, Balanced Histogram, Otsu’s method, Wellner algorithm, ...
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(South African Statistical Association, 2012-11)We present an overview of common methods for modelling a signal contaminated by noise. Specifically discussed are the structure imposed on a model, the properties the noise assumed, some common statistical distributions ...
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The Th1/Th2/Th17 cytokine profile of HIV-infected individuals : a multivariate cytokinomics approach (Elsevier, 2013-02)HIV infection causes the dysregulation of cytokine production. A cytokinomics approach employing cytometric bead array (CBA) technology, flow cytometry and multivariate analysis was applied to the investigation of ...
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(American Society of Agronomy, 2012)Growing maize (Zea mays) in association with legume tree in agroforestry arrangements has been shown to increase yields in many parts of sub-Saharan Africa (SSA). However, the stability of crop yields has not been ...
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(Southern African Institute for Industrial Engineering, 2003)Artificial neural networks are powerful tools for time series forecasting. The problem addressed in this article is to do multi-step prediction of a stationary time series, and to find the associated prediction limits. ...
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(South African Statistical Association, 2012)The enriched triply noncentral bivariate beta type V distribution is introduced. This distribution is constructed from independent chi-squared random variables by using the variables-in-common (or trivariate reduction) ...
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(Elsevier, 2011-08)Nonparametric control charts can provide a robust alternative in practice to the data analyst when there is a lack of knowledge about the underlying distribution. A nonparametric exponentially weighted moving average (NPEWMA) ...
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(Taylor & Francis, 2013)For the first time, the matrix-variate quaternion normal and quaternion Wishart distributions are derived from first principles, i.e. from their real counterparts, exposing the relations between their respective densities and ...
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(Elsevier, 2012-08)Distribution-free (nonparametric) control charts provide a robust alternative to a data analyst when there is lack of knowledge about the underlying distribution. A two-sided nonparametric Phase II exponentially weighted ...
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(Routledge, 2011-06)Nonparametric control charts are useful when there is limited or complete lack of knowledge about the form of the underlying distribution. Though traditional statistical process control (SPC) applications of control ...
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(Media 24 & South African Orthopaedic Association, 2011)With over 3.5 decades dedicated exclusively to total joint replacement, our arthroplasty unit has repeatedly identified and reported a clear correlation between cup wear on the one hand, and pain, interface widening and ...
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(Media 24 & South African Orthopaedic Association, 2011)The publication of our long-term hip replacement follow-up study computer analysis has clearly demonstrated the association between polyethylene (polyethylene/UHMWPE) wear on the one hand and pain, interface widening and ...
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(Springer, 2012)In Statistical Process Control (SPC) there exists a need to model the runlength distribution of a Q-chart that monitors the process mean when measurements are from an exponential distribution with an unknown parameter. ...
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(Taylor & Francis, 2011-10)The traditional exponentially weighted moving average (EWMA) chart is one of the most popular control charts used in practice today. The in-control robustness is the key to the proper design and implementation of any ...
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(Routledge, 2011-11)In this article, the bimatrix variate beta Type IV distribution is derived from independent Wishart distributed matrix variables. We explore specific properties of this distribution which is then used to derive the exact ...
Now showing items 441-460 of 487