GAINING VALUE FROM DISCRETE EVENT SIMULATION:

Discrete event simulation can be used to model various processes, using entities
or tokens moving through queues over time. Figure 9.3 describes the project
steps in such an effort, beginning with establishment of the objectives and scope
and proceeding to implementation. Typically, there are two types of queues
involved in discrete event simulation. First, we have those where entities just
wait, what we normally consider a queue. Second, we see those where entities
reside while the �value-adding work� is carried out. These queues are often
considered to be activities. The �event� occurs when the model changes state,
normally instantaneously. This is typically the start or end of an activity or some
form of interruption, such as a breakdown, lunch break, etc. At the end of an
activity, the simulation would check to see what other activities can now begin
as a result and schedule the end of that activity after allocating the required
Figure 9.3. Project Steps
About Lanner Applications in Air Travel Status
Establish
Objectives & Scope
Data & Level of Detail
Structure Model
Build Model
Verify Model
Validate Model
Experimentation
Project Management
Documentation
& Communication
Present Results
Implementation
Project Definition
Model Building and Testing
Experimentation
Project Completion
About Simulation