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4.5. Dynamic Behavior Package ........................................................................................ 89<br />

4.5.1. Overview ............................................................................................................. 89<br />

4.5.2. Abstract Syntax ................................................................................................... 89<br />

4.5.3. Class Descriptions ............................................................................................... 90<br />

4.5.4. Diagrams ............................................................................................................. 94<br />

5. APPLICATION OF THE NOTATION .............................................................................. 96<br />

5.1. Research Strategy ........................................................................................................ 96<br />

5.2. Multiple-case study design .......................................................................................... 97<br />

5.2.1. Research Questions ............................................................................................. 97<br />

5.3. Case Study 1 ............................................................................................................... 98<br />

5.3.1. Background ......................................................................................................... 98<br />

5.3.2. Case Study Plan ................................................................................................ 101<br />

5.3.3. Conduct <strong>of</strong> <strong>the</strong> Case Study 1 ............................................................................. 104<br />

5.3.4. Discussion and Findings <strong>for</strong> <strong>the</strong> Case Study 1 .................................................. 113<br />

5.4. Case Study 2 ............................................................................................................. 116<br />

5.4.1. Background ....................................................................................................... 116<br />

5.4.2. Case Study Plan ................................................................................................ 117<br />

5.4.3. Conduct <strong>of</strong> <strong>the</strong> Case Study 2 ............................................................................. 120<br />

5.4.1. Discussion and Findings <strong>for</strong> <strong>the</strong> Case Study 2 .................................................. 126<br />

5.5. Lessons Learned and Discussions ............................................................................. 128<br />

6. CONCLUSIONS... ........................................................................................................... 133<br />

6.1. Contributions ............................................................................................................ 133<br />

6.2. Limitations and Future Work .................................................................................... 136<br />

REFERENCES ................................................................................................................................... 140<br />

VITA ................................................................................................................................................... 145<br />

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