Dr Graham Hepworth
Contact Details
e-mail: g.hepworth@ ms.unimelb.edu.au
Phone: (03) 8344 4796
Fax: (03) 8344 7499
Consulting
I provide statistical consulting for external clients and for researchers and postgraduate students within the University. I have a particular interest in agricultural statistics and experimental design, having worked as a statistical consultant (biometrician) for Agriculture Victoria for many years.
Teaching
I teach the short course "Design and Analysis of Experiments" run by the Statistical Consulting Centre. Formerly I co-ordinated the subject "Experimental Design/Statistical Methods" for second-year students in the Faculty of Land and Food Resources.
Research interests
- Estimation of proportions by group testing
- Interval estimation for discrete data
- Bias correction of point estimates in discrete data problems
- Assessment of similarity of DNA profiles
Recent publications
2007
- G. Hepworth, I.R. Gordon & M.J. McCullough. Accounting for dependence in similarity data from DNA fingerprinting. Statistical Applications in Genetics and Molecular Biology 6: Issue 1, Article 1.
- J. Cavalieri, G. Hepworth, V.M. Smart, M. Ryan & K.L. Macmillan. Reproductive performance of lactating dairy cows and heifers resychronized for a second insemination with an intravaginal progesterone releasing device for 7 or 8 days with estradiol benzoate injected at the time of device insertion and 24 h after removal. Theriogenology 67:824–834.
- J. Cavalieri, G. Hepworth, L.A. Fitzpatrick, R.W. Sheppard & K.L. Macmillan. Manipulation and control of the estrous cycle in pasture-based dairy cows. Theriogenology 65: 45–64.
2005
- G. Hepworth. Confidence intervals for proportions estimated by group testing with groups of unequal size. Journal of Agricultural, Biological and Environmental Statistics 10: 478–497.
- J. Cavalieri, A. Rabiee, G. Hepworth & K.L. Macmillan. Effect of artificial insemination on submission rates of lactating dairy cows synchronised and resynchronised with intravaginal progesterone releasing devices and oestradiol benzoate. Animal Reproduction Science 90: 39–55.
- J. Cavalieri, G. Hepworth & L.A. Fitzpatrick. Synchronising oestrus with oestradiol benzoate after using a two-dose prostaglandin treatment to synchronise luteolysis in dairy heifers. Australian Veterinary Journal 83: 91–96.
- A.J. Hamilton, V.L. Versace, G. Hepworth, F. Stagnitti, J. Dawson, P.M. Ridland, N.M. Endersby, N.A. Schellhorn, C. Mansfield & P.M. Rogers. Attending to risk in sequential sampling plans. In Environmental Health Risk III, C.A. Brebbia, V. Popov & D. Fayzieva (eds.). The Sustainable World series, vol. 13. Wessex Institute of Technology. pp. 11–20.
2004
- G. Hepworth. Mid-P confidence intervals based on the likelihood ratio for proportions estimated by group testing. Australian and New Zealand Journal of Statistics 46: 391–405.
- A.J. Hamilton & G. Hepworth. Accounting for cluster sampling in constructing enumerative sequential sampling plans. Journal of Economic Entomology 97: 1132–1136.
- R. Goodman & G. Hepworth. Densities of feral honeybee Apis mellifera colonies in Victoria. The Victorian Naturalist 121: 210–214.
- J. Cavalieri, G. Hepworth & K.L. MacMillan. Ovarian follicular development in Holstein cows following synchronisation of oestrus with oestradiol benzoate and an intravaginal progesterone releasing insert for 5 to 9 days and duration of the oestrus cycle and concentrations of progesterone following ovulation. Animal Reproduction Science 81: 177–193.
- J. Cavalieri, G. Hepworth & L.A. Fitzpatrick. Comparison of two estrus synchronization and resynchronization treatments in lactating dairy cows. Theriogenology
62: 729–747.
- J. Cavalieri, G. Hepworth, K.I. Parker, P.J. Wright & K.L. Macmillan. Effect of treatment with progesterone and oestradiol when starting treatment with an intravaginal progesterone releasing insert on ovarian follicular development and hormonal concentrations in Holstein cows. Animal Reproduction Science 76: 177–193.
- B.A. McKee, R.D. Goodman, C. Saywell & G. Hepworth. Oxytetracycline hydrochloride activity in honeybee larvae (Apis mellifera) following medication with various doses. Apidologie 34: 269–279.
- J. Cavalieri, G. Hepworth, V.E. Eagles & K.L. Macmillan. Comparison of two doses of oestradiol benzoate administered at a resynchronised oestrus on reproductive performance of dairy cows. Australian Veterinary Journal 81: 348–354.
- A.J. Hamilton, I.R. Taylor & G. Hepworth. Activity budgets of waterfowl (Anatidae) on a waste-stabilisation pond at the Western Treatment Plant, Victoria. Emu 102: 171–179.
- V. Traicevski, B. van Rijswijk, G. Hepworth, P. Ridland & J. Moran. Influence of petroleum spray oil on the incidence of celery mosaic potyvirus in celery (Apium graveolens L.). In Spray Oils Beyond 2000, pp. 552–555, G.A.C. Beattie, D.M. Watson, M.L. Stevens & D.J. Rae, Eds. University of Western Sydney, Hawkesbury.
- G. Hepworth & A.J. Hamilton. Scan sampling and waterfowl activity budget studies: design and analysis considerations. Behaviour 138: 1391–1405.
- R. Goodman, G. Hepworth, P. Kaczynski, B. McKee, S. Clarke & C. Bluett. Honeybee pollination of buckwheat (Fagopyrum esculentum Moench) cv. Manor. Australian Journal of Experimental Agriculture 41: 1217–1221.