Research Interests
Biometrics, industrial statistics, statistical consulting
Dr R A (Ray) Littler MSc Auck PhD Monash
Room: GG.16
Phone +64 7 838 4068
Fax +64 7 838 4155
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Research InterestsBiometrics, industrial statistics, statistical consulting Dr R A (Ray) Littler MSc Auck PhD Monash Room: GG.16 Phone +64 7 838 4068 Fax +64 7 838 4155 |
After a Monash PhD in applied probability theory, Ray combined research in population genetics with statistical teaching at Waikato until 1982. He then worked as a biometrician at Ruakura Agricultural Research Centre and in 1987 became founding director of the Waikato Centre for Applied Statistics, a position he still holds. In developing the Centre's external consulting practice he has gained experience in industrial statistics to add to a continuing biometrical practice. The Centre, which involves collaborating statisticians from Ruakura, has also played a key role in:
providing material for courses in applied statistics;
giving practical experience to students in a graduate consulting course; and
providing advice to university researchers, particularly from science and technology.
His current research and consulting interests are mainly in statistical process control in the broad sense; in particular process modelling, calibration of fast measurement systems, and statistical displays as tools for process improvement. Applications have included food processing (eg. dairy manufacturing) and service processes (eg. airport terminal services). Teaching specialties are in statistical process control, consulting, and general applied statistics.
He has been pro dean of the School of Computing and Mathematical Sciences since 1994 and was acting dean for six months in 1997.
Green, J.D., Shiel, R.J. & Littler, R.A. 1999.Boeckella major (Copepoda: Calanoida): a predator in Australian ephemeral pools. Archiv für Hydrobiologie 145, 181-196.
Littler, R A and D Whitaker. Estimating staffing requirements at an airport terminal. J Operational Research Soc v48, 1997, p124-131.
Buwalda, J G, G J Wilson, G S Smith and R A Littler. The development and effects of nitrogen deficiency in field grown kiwifruit (actinidia deliciosa) vines. Plant and Soil v 129, 1990, p
Sarathchandra, S U, K W Perrott and R A Littler. Soil microbial biomass: influence of simulated temperature changes on size, activity and nutrient-content. Soil Biology and Biochemistry v 21, 1989, p 987-993.
Douglas, J A, J M Follett and R A Littler. Boron requirements of asparagus seedlings grown in sand culture. Scientia Horticulturae v 38, 1989, p 33-42.
Powell C L, K I Caldwell, R A Littler and I Warrington. Effect of temperature regime and nitrogen fertiliser level on vegetative and reproductive bud development in Cymbidium orchids. J American Society Horticultural Science 1988.
Douglas J A, R A Littler and M J Slay. Effect of superphosphate with and without nitrogen on grain yield, grain size, nitrogen, phosphorus and sulphur concentrations, and baking quality of 'Karamu' wheat. NZ J Agricultural Research v31, 1988, p169-177.
Ledgard S F, G S Brier, and R A Littler. Legume production and nitrogen fixation in hill pasture communities. NZ J Agricultural Research v30, 1987, p413-421.
Steele, K W and R A Littler. Field evaluation of some factors affecting estimation of nitrogen fixation in pastures by 15N isotope dilution. Australian J Agricultural Research v38, 1987, p153-161.
Littler, R A and A J Good. Fixation times and probabilities for an independent loci model in genetics. Theoretical Population Biology v14, 1978, p204-214.
Littler, R A and A J Good. Ages, extinction times and first passage probabilities for a multi-allele diffusion model with irreversible mutation. Theoretical Population Biology v13, 1978, p214- 225.
Littler, R A. Loss of variability at one locus in a finite population. Mathematical Biosciences v25, 1975, p151-163.
Littler, R A and E D Fackerell. Transition densities for neutral multi-allele diffusion models. Biometrics v31, 1975, p117-123.
Fackerell, E D and R A Littler. Polynomials biorthogonal to Appell's polynomials. Bulletin Australian Mathematical Society v11, 1974, p181-195.
Littler, R A. Linkage disequilibrium in two-locus finite random-mating models without selection or mutation. Theoretical Population Biology v4, 1973, p 259-275.
Littler, R A. Two locus stochastic models in genetics. University of Waikato Mathematics Research Report no. 25, 1974, 60pp.
Littler, R A. Three locus stochastic models in genetics. University of Waikato Mathematics Research Report no. 27, 1974, 34pp.
Littler, R A. The independent loci model as a limit of a two locus model.University of Waikato Mathematics Research Report no. 41, 1976, 9pp.
Littler, R A and J M Willoughby. Analysis of sequential data from an experiment on social dominance. University of Waikato Mathematics Research Report no. 34, 1976, 37pp.
Baars, J A, K T Jagusch, R A Littler and P A Farquhar. Effects of rotational grazing and set stock on pasture production under sheep grazing. Proc Agronomy Society NZ, v14, 1984, p131- 134.
Steele K W, R N Watson, P M Bonish and R A Littler. Effect of invertebrates on nitrogen fixation in temperate pastures. Proc International Grasslands Congress, v15, 1985, p450-451.
Watson R N, G W Yeates, R A Littler and K W Steele. Responses to nitrogen fixation and herbage production following pesticide application on temperate pastures. Proc Australasian Conference Grassland Invertebrate Ecology v4, 1985, 103-113.
Littler, R A. Forum on statistical consulting. Proc Pacific Statistical Congress, 1986, p485-497.
Littler, R A. The Auckland International Airport Passenger Processing Model: simulation and quality improvement. NZOQ Annual Conference, Hamilton, May 1991.
Littler, R A and R Leader. Sampling and testing milk powders for contamination. R&D Project No. 111, NZ Dairy Process Development Committee, 1992.
Littler, R A and D B Miles. The role of SPC in dairy manufacturing processes. First Australian Conference on Industrial Statistics, Sydney, December 1995.
Whitaker, D and R A Littler. Application of statistics and OR in airport terminal services. First Australian Conference on Industrial Statistics, Sydney, December 1995.
Littler, R A. Review of: Statistical Process Control in Automated Manufacturing, edited by J B Keats and N F Hubele. New Zealand Statistician v 25, 1990, p 26-27.
Littler, R A Review of: Multiple Comparisons, Selection, and Applications in Biometry, edited by Fred M. Hoppe. Australian Journal of Statistics v37, 1995, pp 251-252.