Integrating Domain and Worksystem models: an illustration from Air Traffic Management

  • Peter Timmer
  • John Long
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT)


This paper concerns a laboratory-based reconstruction of Air Traffic Management (rATM). A framework and model of the rATM domain, and a framework and model of the rATM worksystem are presented. The separation of domain and worksystem enables a designer to distinguish: (1) the work (performed by a worksystem), represented by a domain model, from (2) the behaviour of a worksystem (observed in carrying out the work), represented by a worksystem model . Integration of the separate models produces a single model that can be used to support the diagnosis of design problems. Problem diagnosis is considered an important stage within an evolutionary system development strategy, and one that would benefit from the support of an integrated model. Issues surrounding model integration are discussed, especially how a model of worksystem behaviours can be related to a domain model. An illustration of how an integrated model supports problem diagnosis is presented. The problem diagnosed is a discrepancy between the worksystem operator’s mental categorisations of domain objects (aircraft), and the actual state of the domain objects being categorised. The model supports reasoning about the consequences of such a discrepancy.


Domain worksystem model integration categorisation problem diagnosis 


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Copyright information

© IFIP International Federation for Information Processing 1996

Authors and Affiliations

  • Peter Timmer
    • 1
  • John Long
    • 1
  1. 1.Ergonomics and HCI UnitUniversity College LondonLondonEngland

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