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Research

Dr David Worthington

Senior Lecturer

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  1. Working paper
  2. Unpublished

    Stability and out-of-time validation of credit risk models

    Minussi, J., Soopramanien, D. G. R. & Worthington, D. J., 2012, (Unpublished).

    Research output: Working paper

  3. Unpublished

    Comparing modelling approaches for corporate credit scoring using multi-level categories of risk

    Minussi, J., Soopramanien, D. G. R. & Worthington, D. J., 2012, (Unpublished).

    Research output: Working paper

  4. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  5. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  6. Published

    What is a ''generic'' hospital model?

    Fletcher, A. & Worthington, D. J., 2007, Lancaster University: The Department of Management Science, (Management Science Working Paper Series).

    Research output: Working paper

  7. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  8. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  9. Published

    Operational research modelling to support healthcare operations management

    Worthington, D. J., 2005, Lancaster University: The Department of Management Science, (Management Science Working Paper Series).

    Research output: Working paper

  10. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  11. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  12. Published

    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, (Management Science Working Paper Series).

    Research output: Working paper

  13. Journal article
  14. Published

    Cost of treatment support for multidrug-resistant tuberculosis using patient-centred approaches in Ethiopia: a model-based method

    Rosu, L., Morgan, L., Tomeny, E. M., Worthington, C., Jin, M., Nidoi, J. & Worthington, D., 7/07/2023, In: Infectious diseases of poverty. 12, 1, 65.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  15. E-pub ahead of print

    A Spline Function Method for Modelling and Generating a Nonhomogeneous Poisson Process

    Morgan, L., Nelson, B., Titman, A. & Worthington, D., 19/06/2023, (E-pub ahead of print) In: Journal of Simulation. 12 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  16. Published

    A multi-fidelity modelling approach for airline disruption management using simulation

    Rhodes-Leader, L., Nelson, B., Onggo, S. & Worthington, D., 31/10/2022, In: Journal of the Operational Research Society. 73, 10, p. 2228-2241 14 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  17. Published

    Infinite-server queueing models of demand in healthcare: A review of applications and ideas for further work

    Worthington, D., Utley, M. & Suen, D., 1/08/2020, In: Journal of the Operational Research Society. 71, 8, p. 1145-1160 16 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  18. Published

    Detecting bias due to input modelling in computer simulation

    Morgan, L., Nelson, B., Titman, A. & Worthington, D., 16/12/2019, In: European Journal of Operational Research. 279, 3, p. 869-881 13 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  19. E-pub ahead of print

    Symbiotic simulation for the operational management of inpatient beds: model development and validation using Δ-method

    Oakley, D., Onggo, B. S. & Worthington, D., 3/06/2019, (E-pub ahead of print) In: Health Care Management Science. 17 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  20. Published

    Staffing of time-varying queues using a geometric discrete time modelling approach

    Chen, X. & Worthington, D. J., 05/2017, In: Annals of Operations Research. 252, 1, p. 63-84 22 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  21. Published

    A modelling tool for capacity planning in acute and community stroke services

    Monks, T., Worthington, D. J., Allen, M., Pitt, M., Stein, K. & James, M. A., 29/09/2016, In: BMC Health Services Research. 16, 8 p., 530.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  22. Published

    Use of queue modelling in the analysis of elective patient treatment governed by a maximum waiting time guarantee

    Kozlowski, D. & Worthington, D., 1/07/2015, In: European Journal of Operational Research. 244, 1, p. 331-338 8 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  23. Published

    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.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  24. Published

    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.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  25. Published

    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.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  26. Published

    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.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  27. Published

    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.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

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