On the distribution of the maximum likelihood estimator of Cronbach's alpha JM van Zyl, H Neudecker, DG Nel Psychometrika 65, 271-280, 2000 | 174 | 2000 |
Preoperative nutritional status and prognostic nutritional index in patients with benign disease undergoing abdominal operations–Part II CJ Dannhauser, A., Van Zyl, J.M. & Nel Journal of the American College of Nutrition 14 (1), 91- 98, 1995 | 64* | 1995 |
Evaluation of mathematic models to assess platelet kinetics MG Lötter, AP Heyns, PN Badenhorst, P Wessels, JM Van Zyl, HF Kotze, ... Journal of nuclear medicine 27 (7), 1192-1201, 1986 | 56 | 1986 |
A computer program in compiled BASIC for the IBM personal computer to calculate the mean platelet survival time with the multiple-hit and weighted mean methods MG Lötter, WR Rabe, JM Van Zyl, AP Heyns, P Wessels, HF Kotze, ... Computers in biology and medicine 18 (4), 305-315, 1988 | 51 | 1988 |
Parameter estimation through weighted least-squares rank regression with specific reference to the Weibull and Gumbel distributions JM van Zyl, R Schall Communications in Statistics-Simulation and Computation 41 (9), 1654-1666, 2012 | 28 | 2012 |
Spatial distribution of the Karoo paralysis tickIxodes rubicundus (Acari: Ixodidae) within a false upper Karoo veld type LJ Fourie, OB Kok, JM Van Zyl Experimental & applied acarology 11 (1), 37-49, 1991 | 26 | 1991 |
The appetence behaviour of two South African paralysis-inducing ixodid ticks LJ Fourie, A Snyman, DJ Kok, IG Horak, JM Van Zyl Experimental & applied acarology 17, 921-930, 1993 | 23 | 1993 |
Interspecific variations in attachment sites and density assessment in femaleIxodes rubicundus (Acari: Ixodidae) on domestic and natural hosts LJ Fourie, JM van Zyl Experimental & applied acarology 13 (1), 1-10, 1991 | 21 | 1991 |
Seasonal occurrence of Karoo paralysis in Angora goats in relation to the infestation density of female Ixodes rubicundus LJ Fourie, IG Horak, JM Van Zyl Veterinary Parasitology 41 (3-4), 249-254, 1992 | 18 | 1992 |
Sites of attachment and intraspecific infestation densities of the brown paralysis tick (Rhipicephalus punctatus) on Angora goats LJ Fourie, IG Horak, JM Van Zyl Experimental & applied acarology 12, 243-249, 1991 | 16 | 1991 |
A median regression model to estimate the parameters of the three-parameter generalized Pareto distribution JM Van Zyl Communications in Statistics-Simulation and Computation 41 (4), 544-553, 2012 | 12 | 2012 |
Estimation of the shape parameter of a generalized Pareto distribution based on a transformation to Pareto distributed variables JM Van Zyl Journal of Statistical Theory and Practice 9, 171-183, 2015 | 11 | 2015 |
Application of the kolmogorov–smirnov test to estimate the threshold when estimating the extreme value index JM van Zyl Communications in Statistics—Simulation and Computation® 40 (2), 199-207, 2011 | 11 | 2011 |
Arthropod parasites of impalas in the Kruger National Park with particular reference to ticks IG Horak, LJ Fourie, JM Van Zyl South African Journal of Wildlife Research-24-month delayed open access 25 …, 1995 | 11 | 1995 |
Multi-Bayesian estimation theory DJ de Waal, PCN Groenewald, JM van Zyl, JV Zidek Statistics& Decisions 4, 1 -18, 1986 | 10* | 1986 |
The performance of univariate goodness-of-fit tests for normality based on the empirical characteristic function in large samples JM van Zyl Communications in Statistics-Simulation and Computation 47 (4), 1146-1156, 2018 | 7 | 2018 |
Equations to calculate the approximate duration and termination of the maximal rate phase of nitrification in soil DJ Laubscher, JM Van Zyl, CC Du Preez Communications in soil science and plant analysis 21 (7-8), 611-621, 1990 | 7 | 1990 |
Patterns of non-starter microflora during ripening of selected South African Cheddar cheeses manufactured by the open-vat procedure JFR Lues, EJ Smit, JM Van Zyl Food microbiology 16 (6), 645-651, 1999 | 6 | 1999 |
Exact expressions for the weights used in least-squares regression estimation for the log-logistic and Weibull distribution JM van Zyl Communications in Statistics-Theory and Methods 46 (4), 1720-1730, 2017 | 4 | 2017 |
The generalized Pareto distribution fitted to research outputs of countries JM van Zyl Scientometrics 94, 1099-1109, 2013 | 4 | 2013 |