In this chapter, we formalize the multi-perspective architecture framework using the system-theoretic paradigm provided by the discrete event system specification (DEVS) formalism. The developed integration approach that allows linking up the isolated perspectives has been formalized through a concept based upon DEVS formalism called parameterized DEVS, whereby concurrent simulation processes cause live update through output-to-parameter integration. This sets up the basis for development of DEVS-based holistic models for efficient management of healthcare systems. Results of real case-based simulations are presented to show how holistic models provide new insights not heretofore attainable with unit and facility specific models.

Chapter Contents:

• 3.1 Conceptual foundations
• 3.2 Formal foundations
• 3.2.1 DEVS specification of atomic and coupled models
• 3.2.2 Parameterized DEVS
• 3.2.3 DEVS-specified multi-perspective healthcare system model
• 3.3 Illustrative case
• 3.3.1 Ebola spreading model
• 3.3.2 Hospital beds allocation model
• 3.3.3 Interstate migrations model
• 3.3.4 Daily worker model
• 3.3.5 Integrators
• 3.3.6 Holistic model
• 3.4 Introduction to pathways-based coordination
• 3.5 Summary
• References

Inspec keywords: health care; discrete event systems; discrete event simulation

Other keywords: real case-based simulations; parameterized DEVS; holistic models; systems theory; output-to-parameter integration; discrete event system specification; multiperspective architecture; healthcare systems management; concurrent simulation processes

Subjects: Systems theory applications in biology and medicine; Simulation, modelling and identification