Stein Weissenberger

A methodology for evaluating systems architectures

We describe how we evaluated the Intelligent Transportation Systems Architecture developed by the Rockwell Team in Phase I of the National Systems Architecture Program for Intelligent Transportation System user services. We present the overall evaluation framework and highlight special features of the methodology, indicating how the particular character of the Rockwell architecture helped to shape the approach. We give examples of evaluation results and indicate new directions that the evaluation is taking in Phase II of the program.

A structured approach for ITS architecture representation and evaluation

This paper presents a structured approach for developing and representing an intelligent transportation systems (ITS) architecture. Four architecture elements are depicted: logical architecture; physical architecture; market packages; and evaluatory design. Each of these elements is important in understanding the architecture. This paper also outlines the evaluation process, and relates how the architecture elements are used in the process.

Deterrence and the design of treaty verification systems

Centered around the notion of deterrence, a framework for analyzing the performance of systems for verifying compliance with arms-control treaty constraints is developed. Using the same models, it is also shown how to evaluate the desirability of the treaty constraints themselves. This analysis forms a relatively unified treatment of both topics, one that permits the joint optimization of both treaty limits and verification mechanisms. The specific application discussed is underground nuclear testing, but because of the generality of the analysis one can apply it to other arms-control contexts as well. >