# Emeritus Professor Philip Pollett

## Researcher biography

Emeritus Professor Phil Pollett has research interests in Markov process theory, and mathematical modelling in population biology, ecology, epidemiology, chemical kinetics and telecommunications.

He holds an honours degree in Applied Mathematics from the University of Adelaide and a PhD degree in Applied Probability from the University of Cambridge. He joined the then Department of Mathematics in 1987 as Senior Lecturer, having previously held positions at the University of Adelaide, Murdoch University and University College of Cardiff. He was promoted to Reader in 1993 and to Professor in 2004.

His research is recognized internationally for significant contributions to Markov process theory, and mathematical modelling. This research has been supported by 12 ARC Large/Discovery/Linkage grants. He is a Chief Investigator within the ARC Centre of Excellence for Mathematical and Statistics Frontiers (ACEMS), and was a Chief Investigator (2002-2014) within the ARC Centre of Excellence for Mathematics and Statistics of Complex Systems (MASCOS). In 1993, he was awarded the Moran Medal by the Australian Academy of Science for distinguished research in Applied Probability.

Phil Pollett has served on the editorial boards of the Journal of the Australian Mathematical Society, Methodology and Computing in Applied Probability, Stochastic Models, and The Annals of Applied Probability, and has served on the organizing committees of several major international conferences. He devised the Probability Web, recognized as the main Web resource for probabilists throughout the world, and one of the first academic web sites. He has a strong record of innovation in undergraduate teaching, and has guided the development of many postgraduate students and postdoctoral fellows through supervision and collaboration.

Featured projects | Duration |
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Understanding the effects of individual variation on population dynamics |

### Book Chapters

*Distributed fault detection using consensus of Markov chains*. Optimization and control methods in industrial engineering and construction. (pp. 85-105) edited by Honglei Xu and Xiangyu Wang. Dordrecht, The Netherlands: Springer. doi: 10.1007/978-94-017-8044-5_6

*Optimal capacity assignment in general queueing networks*. Optimization: structure and applications. (pp. 261-272) edited by Charles Pearce and Emma Hunt. New York, United States: Springer. doi: 10.1007/978-0-387-98096-6_14

*Identifying Q-processes with a given finite m-invariant measure*. Markov Processes and Controlled Markov Chains. (pp. 41-55) edited by Z. Hou, J.A. Filar and A. Chen. The Netherlands: Kluwer. doi: 10.1007/978-1-4613-0265-0_3

### Journal Articles

*Quasi-stationary distributions for queueing and other models*. Queueing Systems, 100 (3-4), 241-243. doi: 10.1007/s11134-022-09750-1

*Normal approximations for discrete-time occupancy processes*. Stochastic Processes and their Applications, 130 (10), 6414-6444. doi: 10.1016/j.spa.2020.05.016

*Local approximation of a metapopulation's equilibrium*. Journal of Mathematical Biology, 77 (3), 1-29. doi: 10.1007/s00285-018-1231-0

*A metapopulation model with Markovian landscape dynamics*. Theoretical Population Biology, 112, 80-96. doi: 10.1016/j.tpb.2016.08.005

*Limiting the spread of disease through altered migration patterns*. Journal of Theoretical Biology, 393, 60-66. doi: 10.1016/j.jtbi.2015.12.019

*Connecting deterministic and stochastic metapopulation models*. Journal of Mathematical Biology, 71 (6), 1481-1504. doi: 10.1007/s00285-015-0865-4

*Indirect detection of genetic dispersal (movement and breeding events) through pedigree analysis of dugong populations in southern Queensland, Australia*. Biological Conservation, 181, 91-101. doi: 10.1016/j.biocon.2014.11.011

*Development and testing of a genetic marker-based pedigree reconstruction system 'PR-genie' incorporating size-class data*. Molecular Ecology Resources, 14 (4), 857-870. doi: 10.1111/1755-0998.12219

*A closing scheme for finding almost-invariant sets in open dynamical systems*. Journal of Computational Dynamics, 1 (1), 135-162. doi: 10.3934/jcd.2014.1.135

*Binomial autoregressive processes with density-dependent thinning*. Journal of Time Series Analysis, 35 (2), 115-132. doi: 10.1002/jtsa.12054

*A model for a spatially structured metapopulation accounting for within patch dynamics*. Mathematical Biosciences, 247 (1), 69-79. doi: 10.1016/j.mbs.2013.11.001

*The limiting behaviour of Hanski's incidence function metapopulation model*. Journal of Applied Probability, 51 (2), 297-316. doi: 10.1239/jap/1402578626

*Quasi-stationary distributions for discrete-state models*. European Journal of Operational Research, 230 (1), 1-14. doi: 10.1016/j.ejor.2013.01.032

*The limiting behaviour of a stochastic patch occupancy model*. Journal of Mathematical Biology, 67 (3), 693-716. doi: 10.1007/s00285-012-0568-z

*Optimal design of experimental epidemics*. Journal of Statistical Planning and Inference, 143 (3), 563-572. doi: 10.1016/j.jspi.2012.09.011

*Special issue: modelling for decision making in ecological systems - preface*. Ecological Modelling, 249, 1-2. doi: 10.1016/j.ecolmodel.2012.07.034

*Interaction between habitat quality and an Allee-like effect in metapopulations*. Ecological Modelling, 249, 84-89. doi: 10.1016/j.ecolmodel.2012.07.001

*The deterministic limit of a stochastic logistic model with individual variation*. Mathematical Biosciences, 241 (1), 109-114. doi: 10.1016/j.mbs.2012.10.001

*Total variation approximation for quasi-equilibrium distributions, II*. Stochastic Processes and Their Applications, 122 (11), 3740-3756. doi: 10.1016/j.spa.2012.07.004

*Chain binomial models and binomial autoregressive processes*. Biometrics, 68 (3), 815-824. doi: 10.1111/j.1541-0420.2011.01716.x

*A central limit theorem for a discrete-time SIS model with individual variation*. Journal of Applied Probability, 49 (2), 521-530. doi: 10.1239/jap/1339878802

*The limiting behaviour of a mainland-island metapopulation*. Journal of Mathematical Biology, 64 (5), 775-801. doi: 10.1007/s00285-011-0429-1

*Hodges-Lehmann scale estimator for Cauchy distribution*. Communications in Statistics-Theory and Methods, 41 (20), 3621-3632. doi: 10.1080/03610926.2011.563016

*Total variation approximation for quasi-stationary distributions*. Journal of Applied Probability, 47 (4), 934-946. doi: 10.1239/jap/1294170510

*Limits of large metapopulations with patch-dependent extinction probabilities*. Advances in Applied Probability, 42 (4), 1172-1186. doi: 10.1239/aap/1293113156

*Locally optimal designs for the simple death process*. Journal of Statistical Planning and Inference, 140 (11), 3096-3105. doi: 10.1016/j.jspi.2010.04.017

*Preface to the selected papers on modelling and control of metapopulation networks*. Ecological Modelling, 221 (21), 2512-2514. doi: 10.1016/j.ecolmodel.2010.05.017

*Analytical methods for a stochastic mainland-island metapopulation model*. Ecological Modelling, 221 (21), 2526-2530. doi: 10.1016/j.ecolmodel.2010.02.017

*Simple rules for ranking and optimally managing metapopulations*. Ecological Modelling, 221 (21), 2515-2520. doi: 10.1016/j.ecolmodel.2010.02.016

*Robust optimal observation of a metapopulation*. Ecological Modelling, 221 (21), 2521-2525. doi: 10.1016/j.ecolmodel.2010.02.018

*Uniqueness, extinction and explosivity of generalised Markov branching processes with pairwise interaction*. Methodology And Computing In Applied Probability, 12 (3), 511-531. doi: 10.1007/s11009-009-9121-y

*Markovian bulk-arrival and bulk-service queues with state-dependent control*. Queueing Systems, 64 (3), 267-304. doi: 10.1007/s11134-009-9162-5

*Modelling population processes with random initial conditions*. Mathematical Biosciences, 223 (2), 142-150. doi: 10.1016/j.mbs.2009.11.008

*Limit theorems for discrete-time metapopulation models*. Probability Surveys, 7 (1), 53-83. doi: 10.1214/10-PS158

*Optimal sampling and problematic likelihood functions in a simple population model*. Environmental Modeling and Assessment, 14 (6), 759-767. doi: 10.1007/s10666-008-9159-1

*Ensemble behaviour in population processes with applications to ecological systems*. Environmental Modeling and Assessment, 14 (5), 545-553. doi: 10.1007/s10666-008-9165-3

*Quantitative Risk Stratification in Markov Chains with Limiting Conditional Distributions*. Medical Decision Making, 29 (4), 532-540. doi: 10.1177/0272989X08330121

*Quasi-Stationary Distributions for Reducible Absorbing Markov Chains in Discrete Time*. Markov Processes and Related Fields, 15 (2), 191-204.

*On parameter estimation in population models II: Multi-dimensional processes and transient dynamics*. Theoretical Population Biology, 75 (2-3), 123-132. doi: 10.1016/j.tpb.2008.12.002

*Ehrenfest model for condensation and evaporation processes in degrading aggregates with multiple bonds*. Physical Review E, 78 (3) 031117, Article Number: 031117 Pt.1. doi: 10.1103/PhysRevE.78.031117

*Survival in a quasi-death process*. Linear Algebra and its Applications, 429 (4), 776-791. doi: 10.1016/j.laa.2008.04.004

*Metapopulation persistence in a dynamic landscape: more habitat or better stewardship?*. Ecological Applications, 18 (3), 590-598. doi: 10.1890/07-1094.1

*A note on the existence and uniqueness of a bounded mean-reverting process*. Journal of the Indonesian Mathematical Society, 14 (2), 83-93.

*Management, control and decision making for ecological systems*. Ecological Modelling, 201 (1), 1-1. doi: 10.1016/j.ecolmodel.2006.07.020

*Estimation for queues from queue length data*. Queueing Systems, 55 (2), 131-138. doi: 10.1007/s11134-006-9009-2

*On costs and decisions in population management*. Ecological Modelling, 201 (1), 60-66. doi: 10.1016/j.ecolmodel.2006.07.021

*A note on extinction times for the general birth, death and catastrophe process*. Journal of Applied Probability, 44 (2), 566-569. doi: 10.1239/jap/1183667423

*A remark on the uniqueness of weighted Markov branching processes*. Journal of Applied Probability, 44 (1), 279-283. doi: 10.1239/jap/1175267178

*Computable bounds for the decay parameter of a birth-death process*. Journal of Applied Probability, 44 (2), 476-491. doi: 10.1239/jap/1183667415

*Stochastic models for the spread of HIV in a mobile heterosexual population*. Mathematical Biosciences, 208 (1), 98-124. doi: 10.1016/j.mbs.2006.09.024

*On parameter estimation in population models*. Theoretical Population Biology, 70 (4), 498-510. doi: 10.1016/j.tpb.2006.08.001

*Extinction times for a birth-death process with two phases*. Mathematical Biosciences, 202 (2), 310-322. doi: 10.1016/j.mbs.2006.02.004

*Approximating persistence in a general class of population processes*. Theoretical Population Biology, 68 (-), 77-90. doi: 10.1016/j.tpb.2005.02.002

*On the existence of uni-instantaneous Q-processes with a given finite mu-invariant measure*. Journal of Applied Probability, 42 (3), 713-725. doi: 10.1239/jap/1127322022

*Uniqueness criteria for continuous-time Markov chains with general transition structures*. Advances In Applied Probability, 37 (4), 1056-1074. doi: 10.1239/aap/1134587753

*Foreword: Festschrift in honour of Daryl Daley*. Australian and New Zealand Journal of Statistics, 46 (1), 3-3. doi: 10.1111/j.1467-842X.2004.00305.x

*Existence and uniqueness of Q-processes with a given finite μ-invariant measure*. Australian & New Zealand Journal of Statistics, 46 (1), 113-120. doi: 10.1111/j.1467-842X.2004.00317.x

*Extinction times for a general birth, death and catastrophe process*. Journal of Applied Probability, 41 (4), 1211-1218. doi: 10.1239/jap/1101840567

*A reduced load approximation accounting for link interactions in a loss network*. Journal of Applied Mathematics and Decision Sciences, 7 (4), 229-248. doi: 10.1155/S1173912603000191

*The collision branching process*. Journal of Applied Probability, 41 (4), 1033-1048. doi: 10.1239/jap/1101840549

*A new method for analysing the equilibrium and time-dependent behaviour of Markovian models*. Mathematical And Computer Modelling, 38 (11-13), 1409-1418. doi: 10.1016/S0895-7177(03)90144-0

*A note on quasi-stationary distributions of birth-death processes and the SIS logistic epidemic*. Journal of Applied Probability, 40 (3), 821-825. doi: 10.1239/jap/1059060909

*Product form approximations for highly linear loss networks with trunk reservation*. Mathematical And Computer Modelling, 38 (11-13), 1147-1156. doi: 10.1016/S0895-7177(03)90115-4

*Path integrals for continuous-time Markov chains*. Journal of Applied Probability, 39 (4), 901-904. doi: 10.1239/jap/1037816029

*Two-link approximation schemes for loss networks with linear structure and trunk reservation*. Telecommunication Systems, 19 (2), 187-207. doi: 10.1023/A:1013394009996

*Integrals for continuous-time Markov chains*. Mathematical Biosciences, 182 (2), 213-225. doi: 10.1016/S0025-5564(02)00161-X

*Quasi-stationarity in populations that are subject to large-scale mortality or emigration*. Environment International, 27 (2-3), 231-236. doi: 10.1016/S0160-4120(01)00092-7

*Similar Markov chains*. Journal of Applied Probability, 38A (A), 53-65. doi: 10.1239/jap/1085496591

*Approximations for the long-term behaviour of an open-population epidemic model*. Methodology and Computing in Applied Probability, 3 (1), 75-95. doi: 10.1023/a:1011418208496

*Further results on the relationship between mu-invariant measures and quasi-stationary distributions for absorbing continuous-time Markov chains*. Mathematical and Computer Modelling, 31 (10-12), 107-113. doi: 10.1016/S0895-7177(00)00077-7

*Quasistationarity of continuous-time Markov chains with positive drift*. Journal of The Australian Mathematical Society Series B-applied Mathematics, 41 (4), 423-441. doi: 10.1017/S0334270000011735

*Modelling congestion in closed queueing networks*. International Transactions in Operational Research, 7 (4-5), 319-330. doi: 10.1111/j.1475-3995.2000.tb00202.x

*Quasistationary distributions for level-dependent quasi-birth-and-death processes*. Communications in Statistics-Stochastic Models, 16 (5), 511-541. doi: 10.1080/15326340008807602

*Quasistationarity in continuous-time Markov chains where absorption is not certain*. Journal of Applied Probability, 37 (2), 598-600. doi: 10.1239/jap/1014842561

*New methods for determining quasi-stationary distributions for Markov chains*. Mathematical And Computer Modelling, 31 (10-12), 143-150. doi: 10.1016/S0895-7177(00)00081-9

*Quasistationary distributions for continuous time Markov chains when absorption is not certain*. Journal of Applied Probability, 36 (1), 268-272. doi: 10.1017/S0021900200017022

*Modelling quasi-stationary behaviour in metapopulations*. Mathematics and Computers in Simulation, 48 (4-6), 393-405. doi: 10.1016/S0378-4754(99)00019-1

*Quasi-stationarity of discrete-time Markov chains with drift to infinity*. Methodology and Computing in Applied Probability, 1 (1), 81-96. doi: 10.1023/a:1010018406356

*Quasistationary distributions for continuous time Markov chains when absorption is not certain*. Journal of Applied Probability, 36 (1), 268-272. doi: 10.1239/jap/1032374247

*Non-explosivity of limits of conditioned birth and death processes*. Journal of Applied Probability, 34 (1), 35-45. doi: 10.2307/3215172

*THE QUASI-STATIONARY BEHAVIOR OF QUASI-BIRTH-AND-DEATH PROCESSES*. Annals of Applied Probability, 7 (1), 134-155. doi: 10.1214/aoap/1034625256

*Limiting conditional distributions for birth-death processes*. Advances In Applied Probability, 29 (1), 185-204. doi: 10.2307/1427866

*Modelling the long-term behaviour of evanescent ecological systems*. Ecological Modelling, 86 (2-3), 135-139. doi: 10.1016/0304-3800(95)00040-2

*The Determination of Quasi-Stationary Distributions Directly From the Transition Rates of An Absorbing Markov-Chain*. Mathematical and Computer Modelling, 22 (10-12), 279-287. doi: 10.1016/0895-7177(95)00205-G

*On the Identification of Continuous-Time Markov-Chains with a Given Invariant Measure*. Journal of Applied Probability, 31 (4), 897-910. doi: 10.2307/3215315

*Poisson Approximations for Telecommunications Networks (Vol 32, Pg 348, 1991)*. Journal of the Australian Mathematical Society Series B-Applied Mathematics, 36 (01), 132-132. doi: 10.1017/S0334270000010298

*An Efficient Procedure for Computing Quasi-Stationary Distributions of Markov-Chains with Sparse Transition Structure*. Advances in Applied Probability, 26 (1), 68-79. doi: 10.2307/1427580

*On the Relationship Between Mu-Invariant Measures and Quasi-Stationary Distributions for Continuous-Time Markov-Chains (Vol 25, Pg 82, 1993)*. Advances in Applied Probability, 25 (3), 717-719.

*On the Relationship Between Mu-Invariant Measures and Quasi-Stationary Distributions for Continuous-Time Markov-Chains*. Advances in Applied Probability, 25 (1), 82-102. doi: 10.2307/1427497

*On the problem of establishing the existence of stationary distributions for continuous-time markov chains*. Probability in the Engineering and Informational Sciences, 7 (4), 529-543. doi: 10.1017/S0269964800003119

*Diffusion Approximations for Some Simple Chemical-Reaction Schemes*. Advances in Applied Probability, 24 (4), 875-893. doi: 10.2307/1427717

*Connecting Internally Balanced Quasi-Reversible Markov-Processes*. Advances in Applied Probability, 24 (4), 934-959. doi: 10.2307/1427720

*A NOTE ON EVANESCENT PROCESSES*. Australian Journal of Statistics, 34 (3), 531-536. doi: 10.1111/j.1467-842X.1992.tb01067.x

*On the Construction Problem for Single-Exit Markov-Chains*. Bulletin of the Australian Mathematical Society, 43 (3), 439-450.

*Invariant-Measures for Q-Processes When Q Is Not Regular*. Advances in Applied Probability, 23 (2), 277-292. doi: 10.2307/1427748

*On the construction problem for single-exit Markov chains*. Bulletin of the Australian Mathematical Society, 43 (3), 439-450. doi: 10.1017/S0004972700029282

*Poisson Approximations for Telecommunications Networks*. Journal of the Australian Mathematical Society Series B-Applied Mathematics, 32 (3), 348-364. doi: 10.1017/S0334270000006913

*Diffusion Approximations for a Circuit Switching Network with Random Alternative Routing*. Australian Telecommunication Research, 25 (2), 45-51.

*On a Model for Interference Between Searching Insect Parasites*. Journal of the Australian Mathematical Society Series B-Applied Mathematics, 32 (02), 133-150. doi: 10.1017/S0334270000008390

*A Note On the Classification of Q-Processes When Q Is Not Regular*. Journal of Applied Probability, 27 (2), 278-290. doi: 10.2307/3214647

*A Description of the Long-Term Behavior of Absorbing Continuous-Time Markov-Chains Using a Center Manifold*. Advances in Applied Probability, 22 (1), 111-128. doi: 10.2307/1427600

*The Generalized Kolmogorov Criterion*. Stochastic Processes and Their Applications, 33 (1), 29-44. doi: 10.1016/0304-4149(89)90064-1

*The Supercritical Birth, Death and Catastrophe Process - Limit-Theorems On the Set of Extinction*. Stochastic Processes and Their Applications, 32 (1), 161-170. doi: 10.1016/0304-4149(89)90060-4

*On the Problem of Evaluating Quasistationary Distributions for Open Reaction Schemes*. Journal of Statistical Physics, 53 (5-6), 1207-1215. doi: 10.1007/BF01023864

*Reversibility, Invariance and Mu-Invariance*. Advances in Applied Probability, 20 (3), 600-621. doi: 10.2307/1427037

*A Method Involving Antithetic Sampling for Estimating Blocking Probabilities in a Circuit-Switched Network*. Australian Telecommunication Research, 22 (2), 39-44.

*Preserving Partial Balance in Continuous-Time Markov-Chains*. Advances in Applied Probability, 19 (2), 431-453. doi: 10.2307/1427426

*Quasi-Stationary Distributions for Autocatalytic Reactions*. Journal of Statistical Physics, 46 (1-2), 249-254. doi: 10.1007/BF01010344

*Connecting Reversible Markov-Processes*. Advances in Applied Probability, 18 (4), 880-900. doi: 10.2307/1427254

*On the Equivalence of Mu-Invariant Measures for the Minimal Process and its Q-Matrix*. Stochastic Processes and Their Applications, 22 (2), 203-221. doi: 10.1016/0304-4149(86)90002-5

*Stochastic-Models of Computer-Communication Systems - Response-Time Problems in Communication-Networks - Scheduling and Characterization Problems for Stochastic Networks - Discussion*. Journal of the Royal Statistical Society Series B-Methodological, 47 (3), 415-428.

*Distributional Approximations for Networks of Quasireversible Queues*. Lecture Notes in Mathematics, 1095, 108-129.

*Sojourn Times in Closed Queuing-Networks*. Advances in Applied Probability, 15 (3), 638-656. doi: 10.2307/1426623

*Some Distributional Approximations in Markovian Queuing-Networks*. Advances in Applied Probability, 14 (3), 654-671. doi: 10.2307/1426679

### Conference Papers

*Interaction between habitat quality and an Allee-like effect in metapopulations*.

*19th International Congress on Modelling and Simulation (MODSIM2011)*, Perth, Australia, 12-16 December 2011. Perth, Australia: Modelling and Simulation Society of Australia and New Zealand.

*Fault modelling using a mixture of conditional Gaussian transitions*.

*19th Mediterranean Conference on Control and Automation*, Corfu, Greece, 20-23 June 2011. Piscataway, NJ, United States: IEEE. doi: 10.1109/MED.2011.5983194

*Fault diagnosis using consensus of Markov chains*.

*3rd International Workshop on Dependable Control of Discrete Systems*, Saarbrucken, Germany, 15-17 June 2011. Piscataway, NJ, United States: IEEE. doi: 10.1109/DCDS.2011.5970320

*Robust optimal observation of a metapopulation*.

*18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation*, Cairns, Australia, 13-17 July, 2009. Canberra, Australia: Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation.

*Analytical methods for a stochastic mainland-island metapopulation model*.

*18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation*, Cairns, Australia, 13-17 July, 2009. Canberra, Australia: Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation.

*Rules of thumb for metapopulation management*.

*18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation*, Cairns, Australia, 13-17 July, 2009. Canberra, Australia: Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation.

*Ensemble behaviour in population processes with applications to ecological systems*.

*17th Biennial Congress on Modelling and Simulation (MODSIM07)*, Christchurch, New Zealand, 10-13 December, 2007. Christchurch, New Zealand: Modelling and Simulation Society of Australia and New Zealand.

*Optimal sampling and problematic likelihood functions in a simple population model*.

*17th Biennial Congress on Modelling and Simulation (MODSIM07)*, Christchurch, New Zealand, 10-13 December, 2007. Christchurch, New Zealand: Modelling and Simulation Society of Australia and New Zealand.

*Costs and decisions in population management: Koalas on Kangaroo Island*.

*16th Biennial Congress on Modelling and Simulation MODSIM05*, University of Melbourne, 12 - 15 December 2005. Canberra, Australia: Modelling and Simulation Society of Australia and New Zealand.

*A method for evaluating the distribution of the total cost of a random process over its lifetime*.

*International Congress on Modelling and Simulation*, Townsville, Australia, 14-17 July 2003. Townsville, Australia: Modelling and Simulation Society of Australia and New Zealand.

*Evaluating persistence times in populations that are subject to local catastrophes*.

*International Congress on Modelling and Simulation*, Townsville, Australia, 14-17 July 2003. Townsvile, Australia: Modelling and Simulation Society of Australia and New Zealand.

*Resource allocation in general queueing networks with applications to data networks*.

*16th National Conf. of the Aust.Soc. for Operations Research*, McLarens On the Lake, McLaren Vale, Sth. Australia, 27th September 2001. Adelaide, South Australia: DSTO (Defence Science and Technology Organisation).

*A reduced load approximation accounting for link interactions in a loss network*.

*16th National Conf. of the Aust.Soc. for Operations Research*, McLarens On the Lake, McLaren Vale, Sth. Australia, 23 - 26 September 2001. Adelaide, South Australia: DSTO (Defence Science and Technology Organisation).

*Diffusion approximations for ecological models*.

*International Congress on Modelling and Simulation*, Australian National University, Canberra, 10-13/12/01. Canberra, Australia: Modelling and Simulation Society of Australia and New Zealand.

*Resource allocation in general queueing networks*.

*Putting OR/Ms Theory into Real Life*, Kito Nijyo Club, Sapporo, Japan, 26-28 June 2000. Sapporo, Japan: Operations Research Society of Japan, Hokkaido Chapter.

*Bottlenecks in Markovian queueing networks*.

*15th National Conference of the Australian Society for Operations Research*, Gold Coast, Aust., 4-7 July, 1999. Brisbane: Aust. Society for Operations Res..

*Quasistationarity in populations that are subject to large-scale mortality or emigration*.

*MODSIM 99 - International Congress on Modelling & Simulation*, Hamilton, NZ, 6-9 December 1999. Hamilton, NZ: Modelling and Simulation Society of Aust. and NZ.

*The analysis of continuous-time Markovian models using expected rates*.

*1st West.Pacific & 34d Aust.-Japan Workshop on Stochastic Models in Engin. Technology & Management*, Christchurch, NZ, 23-25 September 1999. Brisbane: Cen. for Statistics, Univ. of Qld.

*Product form approximations for highly linear loss networks with trunk reservation*. Christchurch, NZ, 23-25 Sept, 1999. Brisbane: Cen. for Statistics, Univ. of Qld.