Dr John Hayward
- Faculty of Computing, Engineering and Science
- Visiting Research Fellow
BSc PhD FRAS
I was a senior lecturer in mathematics at the University of South Wales from 1989 until my retirement in 2014. Post-retirement, I am now a Visiting Fellow, continuing my academic role within the University. I promote education in system dynamics and mathematical modelling, and continue to pursue collaborative research projects.
My current research uses system dynamics, mathematics and sociophysics, which I apply to the growth and decline of churches, political parties and a wide variety of other social phenomena. I frequently attend conferences and meetings in the line of my research but these could be in mathematics, physics, sociology, political science, history or religion. A good mathematical modeller has to be interested in every aspect of the world!
Employment and Education
2014 – present, Visiting Research Fellow, University of South Wales. (Emeritus Position).
1989 – 2014, Senior Lecturer in Mathematics, University of South Wales/University of Glamorgan
1982 – 1989, Lecturer in Mathematics, Napier Polytechnic, Edinburgh.
1979 – 1982, Post Doctoral Research Assistant, University of Glasgow.
1978 – 1979, Lecturer in Mathematics, Accrington and Rossendale College, Lancashire.
1978, PhD Applied Mathematics, Queen Mary College, University of London.
1975, BSc Astrophysics, Queen Mary College, University of London.
I studied at Queen Mary College, University of London, where I graduated with a BSc in Astrophysics and subsequently a PhD in general relativity and gravitation. Following that, I conducted postdoctoral work at Glasgow University in solar physics and became part of the NASA solar maximum mission programme.
In 1982 I joined Napier Polytechnic in Edinburgh continuing my research on solar physics and teaching mathematical modelling. In 1989 I joined the University of Glamorgan as a senior lecturer in mathematical modelling and software engineering, specialising in formal methods. Throughout the 1990s I developed a number of programming courses in Ada, C++ and the functional programming languages SML and Haskell. I conducted research in formal methods and the automated generation of computer code from the Z specification language.
After 2000 I concentrated exclusively on mathematical modelling in the social sciences, using system dynamics, nonlinear analysis and agent-based modelling. I have successfully supervised five research students to PhD, and one to MPhil. I taught a final year module in system dynamics for 14 years as part of BSc Mathematics. In addition, I taught mathematical and agent-based modelling.
Policy Council and Vice President, System Dynamics United Kingdom Chapter
- John Hayward and Paul A.Roach, The concept of force in population dynamics, Physica A: Statistical Mechanics and its Applications, 531, 121736, DOI: 10.1016/j.physa.2019.121736, 2019.
- John Wyburn & John Hayward, An application of an analogue of the partition function to the evolution of diglossia, Physica A: Statistical Mechanics and its Applications, 516, pp.447-463. DOI: 10.1016/j.physa.2018.10.047, 2018.
- John Hayward & Paul A. Roach, Newton’s Laws as an Interpretive Framework in System Dynamics, System Dynamics Review, 33(3-4), 183-218. DOI: 10.1002/sdr.1586, 2017.
- Rebecca A. Jeffs, John Hayward, Paul A. Roach & John Wyburn. Activist Model of Political Party Growth. Physica A: Statistical Mechanics and its Applications 442, 259-272. . doi: 10.1016/j.physa.2015.09.002; arXiv:1509.07805. 2016.
- John Hayward, Newton’s Laws of System Dynamics. Appears in the Proceedings of the 33rd International Conference of the System Dynamics Society, Cambridge, MA, July 2015.
- John Hayward & Graeme Boswell, Model behaviour and the concept of loop impact: A practical method. System Dynamics Review, 30(1), 29-57, DOI: 10.1002/sdr.1511, 2014.
- John Hayward, Rebecca Jeffs, Leanne Howells & Kathryn Evans, Model Building with Soft Variables: A Case Study on Riots. Appears in the Proceedings of the 32nd International Conference of the System Dynamics Society, Delft, Netherlands, July 2014.
- John Hayward, Model Behavior and the Strengths of Causal Loops: Mathematical Insights and a Practical Method. Appears in the Proceedings of the 30th International Conference of the System Dynamics Society, St Gallen, Switzerland, July 2012.
- John Hayward, Church Growth via Enthusiasts and Renewal. Appears in the Proceedings of the 28th International Conference of the System Dynamics Society , Seoul, South Korea, July 2010.
- John Wyburn and John Hayward, A Model of Language-Group Interaction and Evolution Including Language Acquisition Planning, Journal of Mathematical Sociology, 34(3), 167-200, 2010.
- John Wyburn and John Hayward. OR and Language Planning: Modelling The Interaction Between Unilingual and Bilingual Populations, Journal of the Operational Research Society, 60(5), 626-636, 2009.
- John Wyburn and John Hayward, The Future of Bilingualism: An Application of the Baggs and Freedman Model , Journal of Mathematical Sociology 32(4), 267-284, 2008.
- John Hayward, A General Model of Church Growth and Decline, Journal of Mathematical Sociology. 29(3), 177–207, 2005.
- John Hayward, A Dynamical Model of Church Growth and its Application to Contemporary Revivals, Reviews of Religious Research, 43(3), 218–241, 2002.
- John Hayward, Growth and Decline of Religious and Subcultural Groups, Appears in Sustainability in the Third Millennium – Proceedings of the 18th International System Dynamics Society, Bergen, Norway, 2000.
- John Hayward, Mathematical Modeling of Church Growth, Journal of Mathematical Sociology, 23(4), 255–292, 1999.
Conference Papers and Presentations
- Pascal Gambardella, John Hayward, Erika Palmer & Dana Ilmari Polojarvi, Approximating Network Dynamics in the Classic Maya Collapse, Appears in the Proceedings of the 36th International Conference of the System Dynamics Society, Reykjavík, Iceland, 2018.
- The Growth of Islam in the UK: A System Dynamics Perspective, (with N Ahmed and A Hassan), presented at “The Annual Meeting of the Scientific Study of Religion”, Indianapolis, USA, Nov 2014.
- System Dynamics: A Tool for Investigating Church and Religious Growth, presented at “The Annual Meeting of the Scientific Study of Religion”, Boston, USA, Nov 2013.
- The Dynamics of Religious Revival and Church Growth (supervision of L. Howells) 5th Research Student Workshop, University Glamorgan, Mar 2010.
- Does Religion Spread Like a Disease?, International Medieval Congress, Leeds, UK, July 2009.
- Effective Evangelisation, Challenge to Change: exploring strategies for an effective Church in a post-Christian landscape, University of Glamorgan, May 2009.
- Modelling Church Growth – Micro and Macro Models, COST MP0801 WG1 Competition of Beliefs, Paderborn, Jan 2009.
- Modelling Church Growth using System Dynamics, Wales Mathematics Colloquium, Gregynog Wales, May 2008.
- A Dynamical Model of Political Party Growth Based on Finance (supervision of R. Jeffs) 3rd Research Student Workshop, University Glamorgan, Mar 2008.
- Modelling Church Growth – Strategies for Growing Churches, SD+50, London School of Economics Dec 2007.
- Church Growth via Enthusiasts. The 46th Annual Conference of the Operational Research Society, York, UK, 2004.
- A Dynamical Model of Strictness and its Effect on Church Growth, The Annual Meeting of the Religious Research Association /Scientific Study of Religion, Salt Lake City, Utah, Nov 2002.
- Revival or Extinction – An Application of Systems Dynamics to Church Attendance and Membership Data, The Annual Meeting of the Religious Research Association /Scientific Study of Religion, Salt Lake City, Utah, Nov 2002.
- A Dynamical Model of Church Growth and Global Revival, The Annual Meeting for the Scientific Study of Religion, Houston, Texas, Oct 2000.
- Church Growth and Spiritual Life. (with L Howells.) Future First. April 2011, published by Brierley Consultancy.
- Can the Church be Tipped into Growth? Quadrant May 2006, published by Christian Research.
- Passing on the Faith. Quadrant March 2002, published by Christian Research.
- Modelling Church Growth – Mathematically, Church Growth Digest, 23(1) pp.3-5, 2001. British Church Growth Association.
- Church Growth – A Disease!!. Quadrant September 2000, published by Christian Research.
- Fellow of the Royal Astronomical Society
- Member of the System Dynamics Society
- Member of the Religious Research Association
- Member of the Society for the Scientific Study of Religion
Linked In: http://uk.linkedin.com/in/johnhaywardwales
- Mathematical Sociology & Sociophysics
- System Dynamics, theory and applications.
- Applications to church growth, spread of religion, political parties and activism, and general social and cultural diffusion.
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