4.2 Simulation and Analysis
Several types of analysis are necessary for the applications we have in mind. These include traditional DSM techniques (partitioning, cycle identification, dependency tearing). As noted above, our model also includes resources, as well as durations for each activity, and these can be augmented with three point probability distributions, constraints, decision points, and other data. This data can be employed in discrete event simulations to optimize scheduling, and to evaluate resource requirements and the impacts of alternative resource scenarios, and to develop Monte Carlo models of time, cost, and resource implications of uncertainty. The impact of complex iterations on duration, costs, and risk metrics can also be examined in these simulations. Deterministic and probabilistic critical path analysis can also be performed. Plexus provides each of these capabilities, as well as realistic rescheduling if resource scenarios or model details change during actual execution of the model. Being able to exploit each of these simulation and analysis tools are a positive outcome of our model.