ENSE 622: Project Requirements

ENSE 622/ENPM 642 Term Project

Due: 7.00 pm, May 7. This is the last day of class. No extensions!

Problem Statement

The purpose of the term project will be to create a frontend system-level representation for an engineering system of your choice.
We only have 16 students, so either work as an individual or as a team of two.
No three-person teams.

Your project should set the stage for a detailed design and implementation that could be in software, hardware, biology, chemistry, or any combination of these entities.

Choosing a Project Focus

You can find the best projects from recent years in the folders of support material distributed in class.

I am particularly interested in seeing things that have not been tried in previous semesters.

Here are a few suggestions (and they are only suggestions) for directions that you project might take:

Interfacing SysML with Simulation
The four pillars of SysML are the Requirements, Block, Statechart and Parametric diagrams.

Recently tools (e.g., MagicDraw and ParaMagic; Artisan Studio ParaSolver) have been created where you can interface SysML with simulation (e.g., written in Matlab or Modelica), thereby allowing for the exploration of design alternatives through the execution of SysML parametric models, enabling optimal system design solutions to be determined quickly and easily.
Backend simulations calculate system measures-of-effectiveness (MoEs), such as cost, risk, reliability and performance characteristics and automatically verify design constraints.
Platform-Based Design.
Develop a stack of platform abstractions for a particular domain (e.g., for the systematic design of networks in a building).
Systems of Systems.
Develop models of a simple systems of systems application highlighting the interaction and coordination among components (e.g., robots playing soccer).
Networks of Networks.
Develop a model that describes dependencies between networks in a realistic real-world setting (e.g., the various kinds of networks in a building).
Interface-based Design.
Develop a detailed description of interfaces to components in a system-of-systems setting.
Use of Design Patterns.
Perhaps you can propose a design that is implemented via the principles of design patterns (e.g., model-view-controllers, observers, and so forth).
Formal Modeling of Requirements with Semantic Web Technologies.
Investigate the use of XML and RDF to represent requirements. Develop software tools (e.g., in python) to compute inferences and validate consistency of requirements.

Suitable problem domains could include: buildings, roadways, railways, hybrid transportation systems (e.g., combinations of rail and bus).

If you think you have something, let's talk about it and I'll try to help.

Things to Do

I realise that this semester we are dealing with a wide variety of project types and, as such, I want to be flexible. Something that works really well for one project may be completely inappropriate for another.

Here is a suggested list of topics you might like to include in your project:

Project Description.
Projects should begin with an easy-to-read description of what the project is about.
Goals and Scenarios.

Briefly summarize the goals and associated scenarios for this problem domain.
Initial Use Case Modeling.

Identify the actors and system boundary? Develop set of "textual" use cases for this problem domain.
For each use case, identify the actors, flow of events for normal and alternative courses of action, and pre- and post-conditions (if they exist).
Develop activity diagrams showing the sequence of tasks that are accomplished in the execution of individual scenarios.
Also develop sequences of message passing among objects during the execution of these scenarios.
Organize the Use Cases.

Organize the use cases into a use case diagram. Indicate <<extends>> and <<uses>> relationships between use cases, if they exist.
If your project has more than about 10 use cases, think about creating a hierarchy of use case diagrams.
Requirements.

Develop a set of system and test requirements for this problem domain. Identify the source (i.e., "goal" or "use case") of each requirement (or group of requirements).
Organize Requirements.

Organize the requirements into layers of development -- each layer should have a well-defined purpose.
Model of System Behavior.

Create a hierarchy of tasks for "what the system will do."
- Identify tasks that must be completed in sequence, and any that can be worked on concurrently.
- Identify control points in the execution pathway.
Use activity, sequence and statechart diagrams to create models of behavior.
Model(s) of System Structure.

Identify the key components and subsystems that are needed for the system structure.
Organize the components and subsystems into a composition hierarchy diagram and/or component schematic (if you think that is appropriate).
Show multiplicities when they exist.
System-Level Design.

Map the model of behavior onto the system structure, and show how the various logical scenarios will be handled by the system (i.e., what is the pathway of calculations and messages for each type of computation).
I'm envisioning that one or more collaboration, statechart and/or composite-structure diagrams will be appropriate for this task.
Show how the components will interface with each other, and the external world. Consider:
- What standards, if any, will communication among components adhere to?
- What technologies, if any, can be drawn into the logical design from external sources?
Explain how the architecture-level design is constrained by the selection of standards and adoption of technologies.
Use Case/Component Task Interaction Matrix.

Develop a use case/component task interaction matrix.
Traceability.

Develop traceability matrices to show:
- How use cases trace to groups of requirements,
- How individual requirements have been taken into account in the system-level design, and
- Why each system-level component is needed.
Clustering and Modular Design

Some projects will be amenable to improvement via clustering and modular design with design structure matrices.
One possibility would be to implement the concepts explained in "Modularity in Design of Products and Systems" by Huang and Kusiak, 1998.
Measures of Effectiveness.

What are the measures of effectiveness for system- and component-level assessment?
Library of Reusable Components.

Assemble a library of reusable components.

Each component should be described in terms of its cost and the measures of effectiveness identified in the previous section.
Trade-Off Analysis.

Use either CPLEX or the optimization procedures in Excel to find families of Pareto-Optimal designs.
Your tradeoff study should include at least three measures of effectiveness, one of them being cost.
The remaining parameters will depend on the nature problem you are addressing, e.g., performance, reliability.
Create trade-off curves for pairs of measures of effectiveness, and then use a step-by-step procedure to identify the best designs.
Conclusions and Future Work.

Wrap things up:
- What have you learned in this project?
- What was easy? And what was hard?
- Suppose that a team in next years class decides to extend your project -- what should they do next to make the project more complete?
Credits

For team projects, indicate the main contribution of each member in your team to the project.

For the UML I sugest that you use either MS Visio or ArgoUML.
We also have MagicDraw installed on the PCs in the SEIL Laboratory (Rm 2250, A.V. Williams).

Brief Presentation

This semester we have more than ten project teams, so you'll need to keep your presentation short!

Aim for 15 minutes (i.e., no more than 10 slides).
Focus on the problem statement, and "what you are trying to do that's new..."

If you are at a remote site then your can either:

E-mail me your presentation, or
Drive into College Park and deliver it in person.

What to Hand In

Hand in a hardcopy of your final report and presentation (if need be, it can be revised to account for constructive feedback) in an appropriate format (e.g., MS word, pdf, Powerpoint).

Also, please e-mail me copies of your presentation and project.