Dr David Worthington

Senior Lecturer

Qualifications

BSc Birmingham, MSc, PhD Reading

Effects of state-dependent balking on multi-server non-stationary queueing systems
Chassioti, E., Worthington, D.J., Glazebrook, K.D. 03/2014 In: Journal of the Operational Research Society. 65, 2, p. 278-290. 13 p.
Journal article

Stakeholder dynamics in strategic ICT projects: appreciative systems perspective.
Al-Ghaith, T., Brown, D., Worthington, D. 10/09/2013
Conference paper

Stakeholder dynamics in strategic ICT projects
Al-Ghaith, T., Brown, D., Worthington, D. 15/08/2013
Conference paper

Will delays in treatment jeopardize the population benefit from extending the time window for stroke thrombolysis?
Pitt, M., Monks, T., Agarwal, P., Worthington, D., Ford, G., Lees, K., Stein, K., James, M. 11/2012 In: Stroke. 43, 11, p. 2992-2997. 6 p.
Journal article

Comparing modelling approaches for corporate credit scoring using multi-level categories of risk
Minussi, J., Soopramanien, D.G.R., Worthington, D.J. 2012
Working paper

Stability and out-of-time validation of credit risk models
Minussi, J., Soopramanien, D.G.R., Worthington, D.J. 2012
Working paper

Behavioural Modelling of Career Progression in the European Commission
Onggo, S., Soopramanien, D., Pidd, M., Worthington, D. 2012 In: European Journal of Operational Research. 222, 3, p. 632–641. 10 p.
Journal article

Capacity Planning
Worthington, D., Utley, M. 2012 In: Handbook of Healthcare System Scheduling. New York : Springer p. 11-30. 20 p.
Chapter (peer-reviewed)

Setting Staffing Requirements for Time Dependent Queueing Networks: The Case of Accident and Emergency Departments
Izady, N., Worthington, D. 2012 In: European Journal of Operational Research. 219, 3, p. 531-540. 10 p.
Journal article

Approximate analysis of non-stationary loss queues and networks of loss queues with general service time distributions
Izady, N., Worthington, D.J. 09/2011 In: European Journal of Operational Research. 213, 3, p. 498-508. 11 p.
Journal article

Stakeholders’ dynamics influence on ICT strategic projects in Saudi public hospitals: appreciative system concept – a ‘work in progress’ perspective
Al-Ghaith, T., Brown, D., Worthington, D. 8/06/2011
Conference paper

Stakeholders’ dynamics in ICT strategic projects in Saudi public hospitals: appreciative system concept – a ‘work in progress’ perspective
Al-Ghaith, T., Brown, D., Worthington, D. 14/07/2010
Conference paper

Simulation of career development in the European Commission
Onggo, B.S.S., Pidd, M., Soopramanien, D.G.R., Worthington, D.J. 05/2010 In: Interfaces. 40, 3, p. 184-195. 12 p.
Journal article

Operations research diffusion in healthcare management
Langabeer, J., Worthington, D.J. 2010 In: Journal of Health Care Finance. 36, 3, p. 73-87. 15 p.
Journal article

Reflections on queue modelling from the last 50 years
Worthington, D.J. 05/2009 In: Journal of the Operational Research Society. 60, S1, p. S83-S92. 10 p.
Journal article

What is a 'generic' hospital model? - a comparison of 'generic' and 'specific' hospital models of emergency flow patients
Fletcher, A., Worthington, D.J. 2009 In: Health Care Management Science. 12, 4, p. 374-391. 18 p.
Journal article

Modelling Career Development Schemes in the European Commission
Onggo, B.S.S., Pidd, M., Soopramanien, D.G.R., Worthington, D.J. 2009 Lancaster University : The Department of Management Science
Working paper

The DH accident and emergency department model - a national generic model used locally
Fletcher, A., Halsall, D., Huxham, S., Worthington, D.J. 2007 In: Journal of the Operational Research Society. 58, p. 1554-1562. 9 p.
Journal article

What is a ''generic'' hospital model?
Fletcher, A., Worthington, D.J. 2007 Lancaster University : The Department of Management Science
Working paper

Statistical modelling to predict corporate default for Brazilian companies in the context of Basel II using a new set of financial ratios
Minussi, J., Soopramanien, D.G.R., Worthington, D.J. 2007 Lancaster University : The Department of Management Science
Working paper

Operational research modelling to support healthcare operations management
Worthington, D.J. 2007 In: European Working Group - Operational Research Applied to Health Services - 2007. Peter Lang Publishing
Conference contribution

Time-dependent analysis of virtual waiting time behaviour in discrete time queues
Wall, A., Worthington, D.J. 2007 In: European Journal of Operational Research. 178, 2, p. 482-499. 18 p.
Journal article

Modelling and testing the assessment of risk of defaulting of companies in the context of the Basel Accord
Minussi, J., Soopramanien, D.G.R., Worthington, D.J. 2006 In: Panorama Socioeconomico. 33, p. 76-85. 10 p.
Journal article

The DH accident and emergency department model - a national generic model used locally
Fletcher, A., Halsall, D., Huxham, S., Worthington, D.J. 2006 Lancaster University : The Department of Management Science
Working paper

Statistical modelling of defaulting companies for the Basel Accord: a Brazilian case study
Minussi, J., Soopramanien, D.G.R., Worthington, D.J. 2006 Lancaster University : The Department of Management Science
Working paper

Time-dependent analysis of virtual waiting time behaviour in discrete time queues
Wall, A., Worthington, D.J. 2005 Lancaster University : The Department of Management Science
Working paper

The effective management of intensive care: a case study integrating hard and soft methods
Kowalczyk, R.H., Worthington, D.J. 2005 Lancaster University : The Department of Management Science
Working paper

Operational research modelling to support healthcare operations management
Worthington, D.J. 2005 Lancaster University : The Department of Management Science
Working paper

Scheduling appointments in outpatient clinics
Worthington, D.J., Goulsbra, R., Rankin, J. 2005 In: Health Operations Management. London and New York : Routledge p. 223-248. 26 p. ISBN: 0415323959.
Chapter

A simulation based study of a NHS walk-in centre
Ashton, R., Hague, L., Brandreth, M., Worthington, D.J., Cropper, S. 2005 In: Journal of the Operational Research Society. 56, 2, p. 153-161. 9 p.
Journal article

Models to estimate average route lengths in different geographical environments
Hindle, A.J., Worthington, D.J. 2004 In: Journal of the Operational Research Society. 55, 6, p. 662-666. 5 p.
Journal article

A new model for call centre queue management
Chassioti, E., Worthington, D.J. 2004 In: Journal of the Operational Research Society. 55, 12, p. 1352-1357. 6 p.
Journal article

Performance analysis of make-to-order manufacturing systems under different workload control
Haskose, A., Kingsman, B.G., Worthington, D.J. 2004 In: International Journal of Production Economics. 90, 2, p. 169-186. 18 p.
Journal article

Applications of MS/OR in health services
Worthington, D.J. 2002 In: The Informed Student Guide to Management Science. London : Thomson Learning p. 21-22. 2 p. ISBN: 1-86152-542-7.
Chapter

Modelling flow and jobbing shops as a queuing network for workload control
Haskose, A., Worthington, D.J., Kingsman, B.G. 2002 In: International Journal of Production Economics. 78, p. 271-285. 15 p.
Journal article

Variations in access, uptake and equity: radiology services
Worthington, D.J., Kowalczyk, R.H., Dalziel, M., Robinson, P. 1999 Lancaster University : The Department of Management Science
Working paper

Using the discrete time modelling approach to evaluate the time-dependent behaviour of queuing systems
Worthington, D.J., Wall, A. 1999 In: Journal of the Operational Research Society. 50, 8, p. 777-788. 12 p.
Journal article

Speciality location decisions in the reformed NHS: a case study
Hindle, A., Roberts, E.A.M., Worthington, D.J. 1998 In: Health Services Management Research. 11, p. 174-181. 8 p.
Journal article

An example of a good but partially successful OR engagement: improving outpatient clinic operations
Worthington, D.J., Bennett, J.C. 1998 In: Interfaces. 28, 5, p. 56-69. 14 p.
Journal article

Queue management: what has a DSS approach to offer to improve the running of outpatient clinics?
Worthington, D.J. 1997 In: Enhancing Health Services Management: The Role of Decision Support Systems. Oxford : Oxford University Press p. 177-198. 22 p. ISBN: 0335196349.
Chapter