1. DEVS M&S Tutorial 2 Chungman Seo cseo@email.arizona.edu

2. Contents DEVSJAVA Lib  DEVS Interface Expression of Atomic Model  State Diagram DEVSJAVA code Structure  Atomic model  Coupled model Exercise : Fire once neuron

3. DEVS Interface DEVS Supporting Interface DEVS Modeling Interface DEVS Simulation Interface

4. DEVS Supporting Interface Provide a supporting environment for implementing DEVS implementations  Basic data structures Entity Content Message Port

5. Message-related-Interfaces ContentInterface  A Pair of port-value MessageInterface  A collection of contents

6. Ensemble-Interface

7. DEVS Modeling Interfaces

8. Extending the “Core” interfaces interface dynamicStructureInterface { void addCoupling(String srcName, String p1, String destName, String p2); void removeCoupling(String srcName, String p1, String destName, String p2); void addModel(String ModelName); void removeModel(String ModelName); void addInport(String ModelName, String port); void addOutport(String ModelName, String port); void removeInport(String ModelName, String port);

9. Simulator Interfaces coreSimulatorInterface atomicSimulatorInterface CoupledSimulatorInterface CoordinatorInterface CoupledCoordinatorInterface

10. State Diagram of Atomic Model : Generator

11. State Diagram of Atomic Model : Processor

12. State Diagram of Atomic Model : Transducer

13. Mapping state diagram to Atomic DEVS model

14. Overall Structure of Atomic DEVS with DEVSJAVA

15. Overall Structure of Coupled DEVS with DEVSJAVA

16. Exercise : Fire-Once Neuron receptive refract Input fire Firing delay >0 Out Fire-once Neuron ta = ∞

17. State Diagram : Fire-Once Neuron