Alexandre de Barros Barreto, Paulo Cesar G. Costa, and Edgar T. Yano, A Semantic Approach to Evaluate the Impact of Cyber Actions to the Physical Domain, 7th International Conference on Semantic Technologies for Intelligence, Defense, and Security (STIDS 2012), Volume: STIDS. 2012
Barreto, Costa, and Yano discuss connecting the cyber and physical domains in their paper, A Semantic Approach to Evaluate the Impact of Cyber Actions to the Physical Domain, stating:
“The main approach to provide mission understanding involves using a set of distributed sensors to detect intrusions and to uncover attack paths. The preliminary research on the subject is due to Denning  and Bass .”
Having always considered  D. E. Denning, “An intrusion-detection model,” IEEE Transactions on Software Engineering, vol. 13, pp. 222–232, 1987, a very important paper, I am honored to be referenced (in the quoted reference above) next to Denning as “the preliminary research on the subject is due to Denning and Bass“.
Barreto, Costa, and Yano go on to discuss business process oriented approach based on modeling mission and infrastructure to assess cyber threats and impacts. They also describe what they call their “CyberSA Engine” and also “A simulation of an air traffic scenario was developed to evaluate the framework, verifying its ability to generate the relevant situation assessment and present it to the analyst.”
“Evaluating the impact that events within the cyber domain have on a military operation and its critical infrastructure is a non-trivial question, which remains unanswered so
far in spite of the various research efforts addressing it. The key issue underlying this question is the difficulty in correlating cyber and physical behaviors in an integrated view, thus allowing for real-time analysis……”
Interested readers may download the full text on ResearchGate.