Dr Roslyn Hickson

Conjoint Lecturer

School of Mathematical and Physical Sciences (Mathematics)

Career Summary

Biography

My PhD on the topic was critical times of heat and mass transport through multiple layers. From the week after I submitted my PhD until late 2011 I was employed as a Research Fellow in infectious disease modelling, at the National Centre for Epidemiology and Population Health, ANU. I received a Lift-off Fellowship from the Australian Mathematics Society to attend a 2 week masters level course at the University of Utrecht on the mathematical modelling of infectious diseases. December 2011 I started a 4 year University of Newcastle Postdoctoral Research Fellowship. Service * Webmaster of ANZIAM * Webmaster for the Mathematical Biology special interest group of ANZIAM Professional Memberships * Australian Mathematics Society * ANZIAM * Society for Mathematical Biology * Public Health Association of Australia Research Expertise
I am an applied mathematician with particular expertise in modelling and industrial applications. I have wide ranging interests from diffusion and heat transfer to infectious disease modelling. My reserach interests inlude: * Mathematical modelling of infectious diseases * Tuberculosis spread including the effects of HIV and multi-drug resistance * The effect of increasing diabetes prevalence on TB * Dengue fever: impacts of vector control, climate change effects on the spread, transmission through blood transfusion * Spatially dependent disease spread models * Critical times of heat and mass transfer

Teaching Expertise
* Foundational Studies in Mathematics * Mathematical modelling * Developing an honours level course for the mathematical modelling of infectious diseases


Collaborations
I have strong research links with the National Centre for Epidemiology and Population Health at ANU.

Qualifications

  • PhD (Physics), University of New South Wales
  • Bachelor of Engineering (Electrical) (Honours), University of New South Wales

Keywords

  • Applied Mathematics
  • Industrial applied mathematics
  • Infectious Disease Modelling

Fields of Research

Code Description Percentage
010299 Applied Mathematics not elsewhere classified 100

Professional Experience

Academic appointment

Dates Title Organisation / Department
1/11/2011 -  Postdoctoral Research Fellow University of Newcastle
School of Mathematical and Physical Sciences
Australia
1/05/2010 - 1/11/2011 Research Fellow Australian National University
National Centre for Epidemiology and Population Health
Australia
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (16 outputs)

Year Citation Altmetrics Link
2016 Ndii MZ, Allingham D, Hickson RI, Glass K, 'The effect of Wolbachia on dengue dynamics in the presence of two serotypes of dengue: symmetric and asymmetric epidemiological characteristics.', Epidemiol Infect, 1-9 (2016)
DOI 10.1017/S0950268816000753
Citations Scopus - 1
2015 Nguyen HTM, Hickson RI, Kompas T, Mercer GN, Lokuge KM, 'Strengthening Tuberculosis Control Overseas: Who Benefits?', Value in Health, (2015) [C1]

Background: Although tuberculosis is a major cause of morbidity and mortality worldwide, available funding falls far short of that required for effective control. Economic and spi... [more]

Background: Although tuberculosis is a major cause of morbidity and mortality worldwide, available funding falls far short of that required for effective control. Economic and spillover consequences of investments in the treatment of tuberculosis are unclear, particularly when steep gradients in the disease and response are linked by population movements, such as that between Papua New Guinea (PNG) and the Australian cross-border region. Objective: To undertake an economic evaluation of Australian support for the expansion of basic Directly Observed Treatment, Short Course in the PNG border area of the South Fly from the current level of 14% coverage. Methods: Both cost-utility analysis and cost-benefit analysis were applied to models that allow for population movement across regions with different characteristics of tuberculosis burden, transmission, and access to treatment. Cost-benefit data were drawn primarily from estimates published by the World Health Organization, and disease transmission data were drawn from a previously published model. Results: Investing $16 million to increase basic Directly Observed Treatment, Short Course coverage in the South Fly generates a net present value of roughly $74 million for Australia (discounted 2005 dollars). The cost per disability-adjusted life-year averted and quality-adjusted life-year saved for PNG is $7 and $4.6, respectively. Conclusions: Where regions with major disparities in tuberculosis burden and health system resourcing are connected through population movements, investments in tuberculosis control are of mutual benefit, resulting in net health and economic gains on both sides of the border. These findings are likely to inform the case for appropriate investment in tuberculosis control globally.

DOI 10.1016/j.jval.2014.11.008
2015 Ndii MZ, Hickson RI, Allingham D, Mercer GN, 'Modelling the transmission dynamics of dengue in the presence of Wolbachia', Mathematical Biosciences, 262 157-166 (2015) [C1]

© 2015 Elsevier Inc.Use of the bacterium Wolbachia is an innovative new strategy designed to break the cycle of dengue transmission. There are two main mechanisms by which Wolbac... [more]

© 2015 Elsevier Inc.Use of the bacterium Wolbachia is an innovative new strategy designed to break the cycle of dengue transmission. There are two main mechanisms by which Wolbachia could achieve this: by reducing the level of dengue virus in the mosquito and/or by shortening the host mosquito's lifespan. However, although Wolbachia shortens the lifespan, it also gives a breeding advantage which results in complex population dynamics. This study focuses on the development of a mathematical model to quantify the effect on human dengue cases of introducing Wolbachia into the mosquito population. The model consists of a compartment-based system of first-order differential equations; seasonal forcing in the mosquito population is introduced through the adult mosquito death rate. The analysis focuses on a single dengue outbreak typical of a region with a strong seasonally-varying mosquito population. We found that a significant reduction in human dengue cases can be obtained provided that Wolbachia-carrying mosquitoes persist when competing with mosquitoes without Wolbachia. Furthermore, using the Wolbachia strain WMel reduces the mosquito lifespan by at most 10% and allows them to persist in competition with non- Wolbachia-carrying mosquitoes. Mosquitoes carrying the WMelPop strain, however, are not likely to persist as it reduces the mosquito lifespan by up to 50%. When all other effects of Wolbachia on the mosquito physiology are ignored, cytoplasmic incompatibility alone results in a reduction in the number of human dengue cases. A sensitivity analysis of the parameters in the model shows that the transmission probability, the biting rate and the average adult mosquito death rate are the most important parameters for the outcome of the cumulative proportion of human individuals infected with dengue.

DOI 10.1016/j.mbs.2014.12.011
Citations Scopus - 5Web of Science - 4
2014 Hickson RI, Roberts MG, 'How population heterogeneity in susceptibility and infectivity influences epidemic dynamics.', J Theor Biol, 350 70-80 (2014) [C1]
DOI 10.1016/j.jtbi.2014.01.014
Citations Scopus - 6Web of Science - 5
2014 Nguyen H-T-M, Kompas T, Hickson RI, 'Aid and the Control of Tuberculosis in Papua New Guinea: Is Australia's Assistance Cost-Effective?', Asia & the Pacific Policy Studies, 1 364-378 (2014) [C1]
DOI 10.1002/app5.37
2012 Ndii M, Hickson RI, Mercer GN, 'Modelling the introduction of Wolbachia into Aedes Aegypti mosquitoes to reduce Dengue transmission', ANZIAM Journal, 53 213-227 (2012) [C1]
Citations Scopus - 4Web of Science - 2
2012 Hickson RI, Barry SI, Sidhu HS, Mercer GN, 'A comparison of critical time definitions in multilayer diffusion', Australia and New Zealand Industrial and Applied Mathematics (ANZIAM) Journal, 52 333-358 (2012) [C1]
DOI 10.1017/S1446181112000028
Citations Scopus - 2Web of Science - 2
2012 Hickson RI, Mercer GN, Lokuge KM, 'A metapopulation model of tuberculosis transmission with a case study from high to low burden areas', PLoS One, 7 e34411 (2012) [C1]
Citations Scopus - 6Web of Science - 4
2011 Hickson RI, Barry SI, Sidhu HS, Mercer GN, 'Critical times in single-layer reaction diffusion', International Journal of Heat and Mass Transfer, 54 2642-2650 (2011) [C1]
DOI 10.1016/j.ijheatmasstransfer.2011.01.019
Citations Scopus - 8Web of Science - 6
2011 Hickson RI, Barry SI, Mercer GN, Sidhu HS, 'Finite difference schemes for multilayer diffusion', Mathematical and Computer Modelling, 54 210-220 (2011) [C1]
DOI 10.1016/j.mcm.2011.02.003
Citations Scopus - 13Web of Science - 13
2009 Hickson RI, Barry SI, Mercer GN, 'Critical times in multilayer diffusion. Part 1: Exact solutions', International Journal of Heat and Mass Transfer, 52 5776-5783 (2009) [C1]
DOI 10.1016/j.ijheatmasstransfer.2009.08.013
Citations Scopus - 20Web of Science - 19
2009 Hickson RI, Barry SI, Mercer GN, 'Critical times in multilayer diffusion. Part 2: Approximate solutions', International Journal of Heat and Mass Transfer, 52 5784-5791 (2009) [C1]
DOI 10.1016/j.ijheatmasstransfer.2009.08.012
Citations Scopus - 12Web of Science - 11
2009 Hickson RI, Barry SI, Sidhu HS, 'Critical times in one-- and two--layered diffusion', Australasian Journal of Engineering Education, 15 77-84 (2009) [C1]
2009 Hickson RI, Barry SI, Mercer GN, 'Exact and numerical solutions for effective diffusivity and time lag through multiple layers', Australia and New Zealand Industrial and Applied Mathematics (ANZIAM) Journal, 50 C682-C695 (2009) [C1]
2008 Barry SI, Hickson RI, Stokes KE, 'Modelling Lippia spread down flooding river systems', Australia and New Zealand Industrial and Applied Mathematics (ANZIAM) Journal, 49 C359-C375 (2008) [C1]
2008 Hickson RI, Barry SI, Stokes KE, 'Comparison of weed spread models', Australia and New Zealand Industrial and Applied Mathematics (ANZIAM) Journal, 49 C324-C340 (2008) [C1]
Show 13 more journal articles

Conference (6 outputs)

Year Citation Altmetrics Link
2011 Hickson RI, Mercer GN, Lokuge KM, 'Sensitivity analysis of a model for tuberculosis', 19th International Congress on Modelling and Simulation (2011) [E1]
Citations Web of Science - 1
2010 Anderssen B, Fowkes N, Hickson RI, McGuinness M, 'BlueScope Steel, Analysis of Coil Slumping', Proceedings of the 2009 Mathematics in Industry Study Group (2010) [E4]
2009 Whiten B, Fulford G, Hickson RI, Pritchard G, 'The Response of Power Systems to Autonomous ``Grid Friendly'' Devices', Proceedings of the 2008 Mathematics in Industry Study Group (2009) [E4]
2008 Hickson RI, Barry SI, Mercer GN, 'Exact and numerical solutions for effective diffusivity and time lag through multiple layers', ANZIAM Journal (2008)

We consider diffusion through multiple layers, with application to heat transport. An exact solution is derived and the time lag for heat conduction across the layers is studied. ... [more]

We consider diffusion through multiple layers, with application to heat transport. An exact solution is derived and the time lag for heat conduction across the layers is studied. We show the limitations of traditional methods of averaging the diffusivity, which are only applicable in the steady state or for numerous layers. © Austral. Mathematical Soc. 2009.

2008 Stokes KE, Barry SI, Hickson RI, Cunningham SA, 'Future spread of Lippia in the Murray-Darling Basin under climate change', 16th Australian Weeds Conference Proceedings: weed management 2008 hot topics in the tropics (2008) [E1]
2008 Kilby P, Tobin P, Luscombe R, Barry S, Hickson RI, 'DSTO: The maritime surveillance problem', Proceedings of the 2007 Mathematics in Industry Study Group (2008) [E4]
Show 3 more conferences

Thesis / Dissertation (1 outputs)

Year Citation Altmetrics Link
2010 Hickson RI, Critical times of heat and mass transport through multiple layers, University of New South Wales (2010) [T3]
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Grants and Funding

Summary

Number of grants 2
Total funding $484,805

Click on a grant title below to expand the full details for that specific grant.


20122 grants / $484,805

2011 Research Fellowship - DVCR Strategic Appointment$469,805

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Doctor Roslyn Hickson
Scheme Research Fellowship
Role Lead
Funding Start 2012
Funding Finish 2015
GNo G1100670
Type Of Funding Internal
Category INTE
UON Y

Research Fellowship Start-up grant$15,000

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Doctor Roslyn Hickson
Scheme Fellowship Grant
Role Lead
Funding Start 2012
Funding Finish 2012
GNo G1200639
Type Of Funding Internal
Category INTE
UON Y
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Research Supervision

Number of supervisions

Completed1
Current0

Past Supervision

Year Level of Study Research Title / Program / Supervisor Type
2015 PhD Mathematical Modelling to Investigate a Wolbachia Intervention to Reduce Dengue Transmission
PhD (Mathematics), Faculty of Science and Information Technology, The University of Newcastle
Co-Supervisor
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Dr Roslyn Hickson

Position

Conjoint Lecturer
CARMA
School of Mathematical and Physical Sciences
Faculty of Science and Information Technology

Focus area

Mathematics

Contact Details

Email roslyn.hickson@newcastle.edu.au
Phone (02) 4921 6081
Fax (02) 4921 6898

Office

Room V26
Building Mathematics Building (V)
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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