<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Aircraft Generators: Hybrid Modeling and Simulation for Fault Detection</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Aerospace and Electronic Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">Submitted</style></year></dates></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joshua D Carl</style></author><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Xenofon D. Koutsoukos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Detection and Estimation of Multiple Fault Profiles Using Generalized Likelihood Ratio Tests</style></title><secondary-title><style face="normal" font="default" size="100%">Sysid 2012, 16th IFAC Symposium on System Identification</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">Submitted</style></year></dates><pub-location><style face="normal" font="default" size="100%">Brussels, Belgium</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joshua D Carl</style></author><author><style face="normal" font="default" size="100%">Mack, Daniel L C</style></author><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Xenofon D. Koutsoukos</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fault Detection and Isolation for Spacecraft Systems: An Application to a Power Distribution Testbed</style></title><secondary-title><style face="normal" font="default" size="100%">SAFEPROCESS-2012</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">Submitted</style></year></dates><pub-location><style face="normal" font="default" size="100%">Mexico City, Mexico</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Kai Goebel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Prognostics Health Management and Physics based failure Models for Electrolytic Capacitors</style></title><secondary-title><style face="normal" font="default" size="100%">AIAA Infotech@Aerospace Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">June 2012</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">American Institute of Aeronautics and Astronautics,</style></publisher><pub-location><style face="normal" font="default" size="100%">Garden Grove, CA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Kai Goebel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Physics Based Electrolytic Capacitor Degradation Models for Prognostic Studies under Thermal Overstress</style></title><secondary-title><style face="normal" font="default" size="100%">1st European Conference of the Prognostics and Health Management Society</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2012</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Dresden, Germany</style></pub-location><isbn><style face="normal" font="default" size="100%">978-1-936263-04-2</style></isbn></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jose Celaya</style></author><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Kai Goebel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Accelerated Aging in Electrolytic Capacitors for Prognostics</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE - The Annual Reliability and Maintainability Symposium</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2012</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">IEEE</style></publisher><pub-location><style face="normal" font="default" size="100%">Reno, Nevada</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">B. Sulcer</style></author><author><style face="normal" font="default" size="100%">R. Taylor</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Investigating Self-Regulated Learning in Teachable Agent Environments</style></title><secondary-title><style face="normal" font="default" size="100%"> International Handbook of Metacognition and Learning Technologies</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Berlin, Germany: Springer</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Segedy, James</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Investigating the Relationship Between Dialogue Responsiveness and Learning in a Teachable Agent Environment</style></title><secondary-title><style face="normal" font="default" size="100%">The 15th International Conference on Artificial Intelligence in Education</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Auckland, New Zealand</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Basu, Satabdi</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Sengupta, Pratim</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Scaffolding to Support Learning of Ecology in Simulation Environments</style></title><secondary-title><style face="normal" font="default" size="100%">The 15th International Conference on Artificial Intelligence in Education</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Auckland, New Zealand</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mack, Daniel L C</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Mylaraswamy, Dinkar</style></author><author><style face="normal" font="default" size="100%">Hadden, George</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Deriving Bayesian Classifiers from Flight Data to Enhance Aircraft Diagnosis Models</style></title><secondary-title><style face="normal" font="default" size="100%">Annual Conference of the Prognostics and Health Management Society</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/PHM2011CameraFinal.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Montreal, Canada</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Saha Sankalita</style></author><author><style face="normal" font="default" size="100%">Goebel Kai</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Model-based Prognostics Methodology for Electrolytic Capacitors Based on Electrical Overstress Accelerated Aging (Best Paper Award)</style></title><secondary-title><style face="normal" font="default" size="100%">Annual Conference of the Prognostics and Health Management Society (PHM 2011)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Prognostics and Health Management Society</style></publisher><pub-location><style face="normal" font="default" size="100%">Montreal, Canada</style></pub-location><accession-num><style face="normal" font="default" size="100%">PHMC-11-010</style></accession-num></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Goebel Kai</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Prognostics Health Management and Failure Analysis Modeling techniques for Accelerated Life testing in Electrolytic Capacitors</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE 2011 Workshop on Accelerated Stress Testing &amp; Reliability</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">IEEE</style></publisher><pub-location><style face="normal" font="default" size="100%">San Francisco, CA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Goebel Kai</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Prognostic Modeling and Experimental Techniques for Electrolytic Capacitor Health Monitoring</style></title><secondary-title><style face="normal" font="default" size="100%">8th International Workshop on Structural Health Monitoring, IWSHM 2011</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Stanford, CA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Transmission Control Policy Design for Decentralized Detection in Tree Topology Sensor Networks</style></title><secondary-title><style face="normal" font="default" size="100%">14th International Conference on Information Fusion, Fusion 2011</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Chicago IL, USA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mack, Daniel L C</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Mylaraswamy, Dinkar</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Using Tree Augmented Naive Bayes Classifiers to Improve Engine Fault Models</style></title><secondary-title><style face="normal" font="default" size="100%">Uncertainty in Artificial Intelligence: Bayesian Modeling Applications Workshop</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2011</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/UAIWS2011CameraVandy.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Barcelona, Spain</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Transmission Control Policy Design for Decentralized Detection in Sensor Networks</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2011</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Barcelona, Spain</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Goebel Kai</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Towards Prognostics of Electrolytic Capacitors</style></title><secondary-title><style face="normal" font="default" size="100%">Infotech@Aerospace 2011</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">AIAA</style></publisher><pub-location><style face="normal" font="default" size="100%">St. Louis, Missouri</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Transmission Control Policy Design for Decentralized Detection in Sensor Networks</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/2011</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">ISIS-11-103</style></number><publisher><style face="normal" font="default" size="100%">Institute for Software Integrated Systems</style></publisher><pub-location><style face="normal" font="default" size="100%">Nashville TN</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Goebel Kai</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Prognostics Techniques For Capacitor Degradation and Health Monitoring</style></title><secondary-title><style face="normal" font="default" size="100%">The Maintenance &amp; Reliability Conference, MARCON 2011</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/2011</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/MARCON_2011_Kulkarni_Biswas_Celaya_Goebel.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">MARCON</style></publisher><pub-location><style face="normal" font="default" size="100%">Knoxville, TN</style></pub-location><abstract><style face="normal" font="default" size="100%">This paper discusses our initial efforts in constructing physics of failure models for electrolytic capacitors subjected to electrical stressors in DC-DC power converters. Electrolytic capacitors and MOSFET’s are known to be the primary causes for degradation and failure in DC-DC converter systems. We have employed a topological energy based modeling scheme based on the bond graph (BG) modeling language for building parametric models of multi-domain systems, such as motors and pumps. In previous work, we have conducted experimental studies to validate an empirical physics of failure model based on Arrhenius Law for equivalent series resistance (ESR) increase in electrolytic capacitors operating under nominal conditions. In this paper, our focus shifts to deriving first principle models of capacitor degradation that explain both the ESR increase and the decrease in capacitance over time when the capacitor is operated under electrical stress conditions. Experimental studies are run in parallel, and data collected from these studies are used to validate the generated models. In the future, they will also be used to compute model parameters, so that the overall goal of deriving accurate models of capacitor degradation, and using them to predict performance changes in DC-DC converters is realized.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling and Measuring Self-Regulated Learning in Teachable Agent Environments</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of e-Learning and Knowledge Society</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><number><style face="normal" font="default" size="100%">2</style></number><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">19-35</style></pages><abstract><style face="normal" font="default" size="100%">Our learning-by-teaching environment has students take on the role and responsibilities of a teacher to a virtual student named Betty. The environment is designed to help students learn and understand science topics for themselves as they teach and monitor their agent. This process is supported by adaptive scaffolding and feedback through interactions with the teachable agent and a mentor agent. This paper discusses the results of a comparative study conducted in an 8th-grade science classroom, where students received two kinds of metacognitive and learning strategy feedback. We analyze student performance and learning gains as a result of the intervention. To gain further insight into student learning behaviors exhibited during the intervention, we employ a data mining methodology incorporating hidden Markov modeling and sequence mining techniques. The results illustrate both the effectiveness of the experimental agent feedback in encouraging metacognitive learning strategies and the utility of the data mining methodology.</style></abstract><section><style face="normal" font="default" size="100%">19</style></section></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joeng, H.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Johnson, Julie</style></author><author><style face="normal" font="default" size="100%">Howard, Larry</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Analysis of productive learning behaviors in a structured inquiry cycle using hidden Markov models</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of the 3rd International Conference of Educational Data Mining</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">June 2010</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Pittsburgh, PA</style></pub-location><pages><style face="normal" font="default" size="100%">81-90</style></pages></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zander, Justyna</style></author><author><style face="normal" font="default" size="100%">Mosterman, Piter J</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Computation of things for human protection and fulfillment</style></title><secondary-title><style face="normal" font="default" size="100%">Technologies for Homeland Security (HST), 2010 IEEE International Conference on</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">activity patterns</style></keyword><keyword><style  face="normal" font="default" size="100%">computational engineering</style></keyword><keyword><style  face="normal" font="default" size="100%">decision support systems</style></keyword><keyword><style  face="normal" font="default" size="100%">ergonomics</style></keyword><keyword><style  face="normal" font="default" size="100%">geographic information systems</style></keyword><keyword><style  face="normal" font="default" size="100%">geographic position</style></keyword><keyword><style  face="normal" font="default" size="100%">health and safety</style></keyword><keyword><style  face="normal" font="default" size="100%">human protection</style></keyword><keyword><style  face="normal" font="default" size="100%">individual decision support</style></keyword><keyword><style  face="normal" font="default" size="100%">individual human context</style></keyword><keyword><style  face="normal" font="default" size="100%">quick forecasting</style></keyword><keyword><style  face="normal" font="default" size="100%">situational awareness</style></keyword><keyword><style  face="normal" font="default" size="100%">state patterns</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Zander et al - 2010 -- Computation of Things for Human Protection &amp; Fulfillment.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Waltham, MA</style></pub-location><pages><style face="normal" font="default" size="100%">153 -159</style></pages><abstract><style face="normal" font="default" size="100%">Computer science and computational engineering have enabled great advances in modeling and simulation to analyze various scenarios. Still, facilitating and enhancing situational awareness for a single human is rarely considered. Poor decisions by an individual encountering everyday challenges or public threat situations can have dramatic effects, both for the individual and others. In the presented research, a Computation of Things (CoTh) framework is proposed to provide individual decision support during crises and prevent long-term deviations from safe and secure conditions. The target of CoTh is to enable a profound understanding of the situation from the viewpoint of individual persons in order to permanently reduce their fear, while simultaneously increasing awareness of appropriate responses. CoTh allows for a quick forecasting of action (or non-action) alternatives based on an individual human context, including geographic position (e.g., pollution level and energy usage), activity patterns (e.g., personal nutrition habits, lifestyle, traveling load, family status, circle of friends, social network, and virtual life), and state patterns (e.g., the DNA, current health conditions, and musculature of a human), depending on the considered situation. Insights into CoTh's motivation, requirements, and challenges are provided and the architecture proposal is depicted.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Sulcer, Brian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling and Measuring Self-Regulated Learning in Teachable Agent Environments</style></title><secondary-title><style face="normal" font="default" size="100%">Papers from the AAAI Fall Symposium: Cognitive and Metacognitive Educational Systems (MCES)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2010</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Arlington, VA</style></pub-location><volume><style face="normal" font="default" size="100%">FS-10-01</style></volume><pages><style face="normal" font="default" size="100%">34-39</style></pages></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Jose Celaya</style></author><author><style face="normal" font="default" size="100%">Kai Goebel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Diagnostic/Prognostic Experiments for Capacitor Degradation and Health Monitoring in DC-DC converters</style></title><secondary-title><style face="normal" font="default" size="100%">ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2010</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">ASME</style></publisher><pub-location><style face="normal" font="default" size="100%">Philadelphia, PA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Benjamin Podgursky</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Tracking of Behavior in Complex Hybrid Systems via Hybrid Bond Graphs</style></title><secondary-title><style face="normal" font="default" size="100%">Annual Conference of the Prognostics and Health Management Society 2010</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/phmc_10_064.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Portland, OR, US</style></pub-location><abstract><style face="normal" font="default" size="100%">For many real-world systems, which exhibit complex, nonlinear, and hybrid behavior, it is important to accurately track and monitor the state and health of these systems. The continuous state estimation problem has been well studied, and a number of extensions of the Kalman filter to nonlinear systems have been proposed. Hy- brid state estimation poses an additional challenge, because the model must be quickly updated during a mode change to facilitate accurate, real time tracking. This paper discusses an approach to minimize the amount of equation regeneration necessary when the system undergoes hybrid mode changes. These equations are used as the state update equation for an Unscented Kalman Filter that tracks the system’s state. We demonstrate the effectiveness of our approach by tracking the hybrid behaviors of NASA’s ADAPT test bench. Results show that our algorithm scales well for tracking large nonlinear and hybrid systems.
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Kai Goebel</style></author><author><style face="normal" font="default" size="100%">Jose Celaya</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Experimental studies of ageing in electrolytic capacitors</style></title><secondary-title><style face="normal" font="default" size="100%">Annual Conference of the Prognostics and Health Management Society 2010</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2010</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Prognostics and Health Management Society</style></publisher><pub-location><style face="normal" font="default" size="100%">Porltand, OR</style></pub-location><abstract><style face="normal" font="default" size="100%">Understanding the aging mechanisms of electronic components in an avionics system is extremely important as they are part of the critical sub-systems avionics which includes the GPS and INAV systems. Electrolytic capacitors and MOSFET’s have higher failure rates than the other components in DC-DC power converter systems. With increased use of electronics in avionics system, it becomes very much important to understand these components degradation mechanisms and their effects on the rest of the system. Our current work focuses on analyzing and modeling degradation phenomena in electrolytic capacitors and its effects on the output of DC-DC converter systems. The output degradation is typically measured by the increase in ripple current and the drop in output voltage at the load. Typically the ripple current effects dominate, and they can have adverse effects on downstream components. For example, in avionics systems where the power supply drives a GPS unit, ripple currents can cause glitches in the GPS position and velocity output, and this may cause errors in the Inertial Navigation (INAV) system causing the aircraft to fly off course.
 Literature reports a number of operating conditions that may cause capacitor degradation. These include High Voltage conditions, Transients, Reverse Bias, Strong Vibrations and high ripple current. In our work, we have studied the effects of capacitor degradation on DC-DC converter performance by developing a combination of converter system model and a physics of failure model of electrolytic capacitor degradation when subjected to thermal and electrical stresses. Thermal stress occurs when the capacitors operate in high temperature environments, while electrical stress conditions occur due to high operating voltages and even ripple currents above the rated values. In our work we are developing models to capture the failure phenomenon in these components. 
In this paper, we discuss two experiments to observe degradation in electrolytic capacitors. In the first ageing experiment study, the capacitor was subjected to degradation for over 1000 hours of capacitor operation time under nominal room temperature conditions, and the degradation was monitored at regular intervals. In the accelerated ageing methodology study, the capacitors were subjected to high electrical stress. During the accelerated testing we observed a faster degradation in the capacitors where we measured the ESR (Equivalent Series Resistance) which increased over the period of time. 
We also discuss the future accelerated ageing method and tests for capacitor degradation. In this paper we present the details of our aging methodology along with details of experiments and analysis of the results
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author><author><style face="normal" font="default" size="100%">Kai Goebel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Integrated Diagnostic/Prognostic Experimental Setup for Capacitor Degradation and Health Monitoring (Best Student Paper Award )</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE AUTOTESTCON 2010</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2010</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">IEEE</style></publisher><pub-location><style face="normal" font="default" size="100%">Orlando, FL</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Bharadwaj Raj</style></author><author><style face="normal" font="default" size="100%">Kim Kyusung</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effects of Degradation in DC-DC Converters on Avionics Systems: A Model Based Approach</style></title><secondary-title><style face="normal" font="default" size="100%">Machinery Failure Prevention Technology Conference, MFPT 2010</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/KulkarniBiswas_BharadwajKim_MFPT2010.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">MFPT</style></publisher><pub-location><style face="normal" font="default" size="100%">Huntsville, AL</style></pub-location><pages><style face="normal" font="default" size="100%">8-13</style></pages><abstract><style face="normal" font="default" size="100%">This paper proposes a model based approach to study the degradation effects of power supply converters on the avionics systems. Avionics systems combine physical processes, computational hardware, and software systems, and present unique challenges to performing root cause analysis when faults occur, and also for establishing the effects of faults on overall system behavior and performance. However, systematic analysis of these conditions are very important for analysis of safety and also to avoid catastrophic failures in navigation systems.

A combined energy-based and physics of failure model approach is adopted for degradation analysis and prognosis of degrading components in DC-DC power converters. We have developed automated methods for generating Simulink models from bond graph representations of physical models. The bond graph models are also used to derive models for diagnostic and prognostic analysis. Further, we have also developed models of the software and hardware components of the GPS and INAV subsystems as Simulink™ modules. The complete system for studying the behaviors of the avionics system (both nominal and faulty) is implemented as a set of integrated Simulink modules.

In avionics systems, degradations and faults in this unit propagates to the GPS and INAV systems. These can cause a variety of faults in these systems, e.g., ripple currents at the power supply output can cause glitches in the GPS position and velocity output, and this, in turn, produces errors in the Inertial Navigation (INAV) system calculations. One of the faults we have been studying in detail is electrolytic capacitor degradation in the power supply, and its effects on the functioning of the GPS unit. 

We apply qualitative fault signature methods for detecting and isolating faults in all three components of the avionics system. Fault signature generation is based on establishing causal relations between system parameters and measurements, and estimating the effect of a parameter value change (representing a fault) on the measured values. 

In the literature a number of operating conditions that cause capacitor degradation, such as High Voltage conditions, Transients, Reverse Bias, Strong Vibrations and high ripple current have been reported. Some of these conditions are observed by the power supplies embedded in the avionics systems. In this work, we study some of these conditions which lead to capacitor degradation i.e. due to thermal and electrical stresses. 

A topological energy based modeling scheme developed on the bond graph (BG) modeling language for building parametric models of multi-domain physical systems has been implemented. A model based approach to studying degradation phenomena enables us to combine the energy based modeling of the DC-DC converter with physics of failures models of capacitor degradation, and to predict using stochastic simulation methods how system performance deteriorates with time. This more systematic analysis may provide a more general and accurate method for computing the remaining useful life (RUL) of the component and the converter system. We adopt a physics of failure model (Arrhenius Law) for equivalent series resistance (ESR) increase in electrolytic capacitors subjected to electrical and thermal stresses. High ripple currents due to degradation lead to frequent resets and even damage in the systems that are downstream from the power supply. 

The literature indicates that the fluctuation in power supply voltage and excessive ripple currents could lead to various failures in the GPS receiver module.  In this work we have simulated the GPS reset events due to voltage fluctuations.  We have also simulated the loss of receiver lock due to excessive ripple current.  We have demonstrated using our simulation models the effects of power supply faults on the overall performance of the GPS solution. 

Our methodology also provides a framework for developing efficient fault signature methods for fault detection and fault isolation. In future, we will conduct more detailed analysis of degradation effects, and their propagation to the different components of the system. We will also develop methods to quantify the effects of degradation on overall system performance.
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Bharadwaj Raj</style></author><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Kim Kyusung</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Model-Based Avionics Systems Fault Simulation and Detection</style></title><secondary-title><style face="normal" font="default" size="100%">American Institute of Aeronautics and Astronautics, AIAA Infotech Aerospace 2010</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/2010</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Atlanta, GA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Goebel Kai</style></author><author><style face="normal" font="default" size="100%">Celaya Jose</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Physics of Failure Models for Capacitor Degradation in DC-DC Converters</style></title><secondary-title><style face="normal" font="default" size="100%">The Maintenance &amp; Reliability Conference, MARCON 2010</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">02/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/KulkarniBiswasKoutsoukos_GoebelCelaya_MARCON2010.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">MARCON</style></publisher><pub-location><style face="normal" font="default" size="100%">Knoxville, TN</style></pub-location><abstract><style face="normal" font="default" size="100%">This paper proposes a combined energy-based and physics of failure model for degradation analysis and prognosis of electrolytic capacitors in DC-DC power converters. Electrolytic capacitors and MOSFET’s have higher failure rates than other components in DC-DC converter systems. Currently our work focuses on analyzing and modeling electrolytic capacitors degradation and its effects on the output of DC-DC converter systems. The output degradation is typically measured by the increase in ripple current and the drop in output voltage at the load. Typically the ripple current effects dominate, and they can have adverse effects on downstream components. For example, in avionics systems where the power supply drives a GPS unit, ripple currents can cause glitches in the GPS position and velocity output, and this may cause errors in the Inertial Navigation (INAV) system causing the aircraft to fly off course.

A model based approach to studying degradation phenomena enables us to combine the energy based modeling of the DC-DC converter with  physics of failures models of capacitor degradation, and predict using stochastic simulation methods how system performance deteriorates with time. This more systematic analysis may provide a more general and accurate method for computing the remaining useful life (RUL) of the component and the converter system. 

We have employed a topological energy based modeling scheme based on the bond graph (BG) modeling language for building parametric models of multi-domain physical systems. The BG approach captures relationship between component parameters, system behavior and performance. Component degradation models are constructed using empirical physics of failure models that have been presented in the literature, and validating these models using data collected from accelerated degradation studies. The physics of failure models provide mathematical formulations that are directly linked to component parameters. 

Literature reports a number of operating conditions that may cause capacitor degradation. These include High Voltage conditions, Transients, Reverse Bias, Strong Vibrations and high ripple current. In our work, we have studied the effects of capacitor degradation on DC-DC converter performance by developing a combination of converter system model and a physics of failure model of electrolytic capacitor degradation when subjected to thermal and electrical stresses. Thermal stress occurs when the capacitors operate in high temperature environments, while electrical stress conditions occur due to high operating voltages and even ripple currents above the rated values.  In our work we are developing models to capture the failure phenomenon in these components. 

Our current work adopts a physics of failure model (Arrhenius Law) for equivalent series resistance (ESR) increase in electrolytic capacitors subjected to electrical and thermal stresses. Under stress conditions the ESR gradually increases and capacitance of the capacitor gradually decreases with time thus resulting in the capacitors ability to filter out AC components in the output voltage.  As a result, the output ripples current and ripple voltages of the converter increases over time. The output DC voltage also decreases over time, but the ripple current effects on the load are more significant. High ripple currents may lead to frequent resets or even damage in the systems that are downstream from the power supply. We present a combined model- and data-driven approach for estimating and validating the parameters of our physics of failure models for capacitor degradation. We use Monte Carlo simulation methods to develop prognostic methods that predict remaining useful life based on degradation in the power supply output.

For model simulation study the derived degradation model of the capacitors are reintroduced into the DC-DC converter system model to study changes in the system performance using Monte Carlo methods. The simulation results observed under different stress conditions are recorded and compared with the hardware experiments. We have designed different hardware setups for capturing the data of actual degradation phenomenon under thermal and electrical stress. In the first setup capacitors are subjected to only thermal stress. Under this condition output ripple voltage and increase in ESR is monitored over the period of time. In the second setup experiment the capacitors are subjected to electrical stress by continuous charging/discharging cycle. The ESR parameter is monitored regularly over this period of time. The data from these experiments is used to verify results from the models developed and also for refining the model parameters for more accuracy. The paper concludes with comments and future work to be done. 
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Mack, Daniel L C</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Coordination of Planning and Scheduling Techniques for a Distributed, Multi-level, Multi-agent System</style></title><secondary-title><style face="normal" font="default" size="100%">The International Conference on Agents and Artificial Intelligence (ICAART 2010)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2010</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Kinnebrew et al - 2010 - ICAART -- Coord Plan &amp; Sched for Distrib Multi-level MAS.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Valencia, Spain</style></pub-location><abstract><style face="normal" font="default" size="100%">Planning and scheduling for agents operating in heterogeneous, multi-agent environments is governed by the nature of the environment and the interactions between agents. Significant efficiency and capability gains can be attained by employing planning and scheduling mechanisms that are tailored to particular agent roles. This paper presents such a framework for a global sensor web that operates as a two-level hierarchy, where the mission level coordinates complex tasks globally and the resource level coordinates the operation of subtasks on individual sensor networks. We describe important challenges in coordinating among agents employing two different planning and scheduling methods and develop a coordination solution for this framework. Experimental results validate the benefits of employing guided, context-sensitive coordination of planning and scheduling in such sensor web systems.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Roychoudhury, Indranil</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Patterson-Hine, Ann</style></author><author><style face="normal" font="default" size="100%">Poll, Scott</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Comprehensive Diagnosis Methodology for Complex Hybrid Systems: A Case Study on Spacecraft Power Distribution Systems</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on System, Man, and Cybernetics, Part A</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><number><style face="normal" font="default" size="100%">5</style></number><volume><style face="normal" font="default" size="100%">40</style></volume><pages><style face="normal" font="default" size="100%">917-931</style></pages></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Event-based Approach to Integrated Parametric and Discrete Fault Diagnosis in Hybrid Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Transactions of the Institute of Measurement and Control, Special Issue on Hybrid and Switched Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><number><style face="normal" font="default" size="100%">5</style></number><volume><style face="normal" font="default" size="100%">32</style></volume><pages><style face="normal" font="default" size="100%">487-510</style></pages></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Jeong, Hogyeong</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Sulcer, Brian</style></author><author><style face="normal" font="default" size="100%">Roscoe, Rod</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Measuring Self-regulated Learning Skills through Social Interactions in a Teachable Agent Environment</style></title><secondary-title><style face="normal" font="default" size="100%">Research and Practice in Technology-Enhanced Learning (RPTEL)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">hidden Markov models</style></keyword><keyword><style  face="normal" font="default" size="100%">Learning by teaching</style></keyword><keyword><style  face="normal" font="default" size="100%">measuring self-regulated learning</style></keyword><keyword><style  face="normal" font="default" size="100%">metacognition</style></keyword><keyword><style  face="normal" font="default" size="100%">sequence analysis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Biswas-etal_MeasuringSRL_RPTEL2010.pdf</style></url></related-urls></urls><number><style face="normal" font="default" size="100%">2</style></number><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">123–152</style></pages><abstract><style face="normal" font="default" size="100%">We have developed a learning environment where students teach a computer agent, using visual representations, and can monitor the agent’s learning progress by asking her questions and having her take quizzes. The system provides self-regulated learning and metacognitive support via dialog-embedded prompts from Betty, the teachable agent, and Mr. Davis, the mentor agent. Our primary goals have been to support learning of complex science topics in middle school classrooms and facilitate development of metacognitive skills to support future learning. In this paper, we discuss methods that we have employed for detecting and characterizing students’ behavior patterns from their activity sequences on the system. In particular, we discuss a method for learning hidden Markov models (HMM) from the activity logs. We demonstrate that the HMM structure corresponds to students’ aggregated behavior patterns in the learning environment. Overall, the HMM technique allows us to go beyond simple frequency and sequence analyses, such as individual activity and pre-defined pattern counts, instead using exploratory methods to examine how these activities cohere in larger patterns over time. The paper outlines a study conducted in a 5th grade science classroom, presents the models derived from the students’ activity sequences, interprets the model structure as aggregate patterns of their learning behaviors, and links these patterns to students’ use of self-regulated learning strategies. The results illustrate that those who teach an agent demonstrate better learning performance and better use of metacognitive monitoring behaviors than students who only learn for themselves. We also observed more advanced and focused monitoring behaviors in the students who received metacognitive strategy feedback from the mentor agent while they taught the teachable agent.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Sulcer, Brian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Measuring Self-regulated Learning Skills through Social Interactions in a Teachable Agent Environment</style></title><secondary-title><style face="normal" font="default" size="100%">The AAAI Fall Symposium on Cognitive and Metacognitive Educational Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Lu, Chenyang</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Integrated Planning and Adaptive Resource Management Architecture for Distributed Real-Time Embedded Systems</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Transactions on Computers</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">adaptive planning</style></keyword><keyword><style  face="normal" font="default" size="100%">adaptive resource management architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">autonomic computing</style></keyword><keyword><style  face="normal" font="default" size="100%">decision theory</style></keyword><keyword><style  face="normal" font="default" size="100%">decision-theoretic planning</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed processing</style></keyword><keyword><style  face="normal" font="default" size="100%">dynamic resource allocation</style></keyword><keyword><style  face="normal" font="default" size="100%">embedded systems</style></keyword><keyword><style  face="normal" font="default" size="100%">fault tolerant computing</style></keyword><keyword><style  face="normal" font="default" size="100%">integrated planning-allocation-control framework</style></keyword><keyword><style  face="normal" font="default" size="100%">open distributed real-time embedded system</style></keyword><keyword><style  face="normal" font="default" size="100%">open systems</style></keyword><keyword><style  face="normal" font="default" size="100%">QoS</style></keyword><keyword><style  face="normal" font="default" size="100%">quality of service</style></keyword><keyword><style  face="normal" font="default" size="100%">resource allocation</style></keyword><keyword><style  face="normal" font="default" size="100%">runtime system control</style></keyword><keyword><style  face="normal" font="default" size="100%">self-optimization</style></keyword><keyword><style  face="normal" font="default" size="100%">self-reconfigurable system</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Shankaran et al - 2009 - IEEE Trans Comp -- Integ Plan &amp; Adapt Resource Mgmt Arch for DRE Sys.pdf</style></url></related-urls></urls><number><style face="normal" font="default" size="100%">11</style></number><volume><style face="normal" font="default" size="100%">58</style></volume><pages><style face="normal" font="default" size="100%">1485 -1499</style></pages><abstract><style face="normal" font="default" size="100%">Real-time and embedded systems have traditionally been designed for closed environments where operating conditions, input workloads, and resource availability are known a priori and are subject to little or no change at runtime. There is an increasing demand, however, for autonomous capabilities in open distributed real-time and embedded (DRE) systems that execute in environments where input workload and resource availability cannot be accurately characterized a priori. These systems can benefit from autonomic computing capabilities, such as self-(re)configuration and self-optimization, that enable autonomous adaptation under varying-even unpredictable-operational conditions. A challenging problem faced by researchers and developers in enabling autonomic computing capabilities to open DRE systems involves devising adaptive planning and resource management strategies that can meet mission objectives and end-to-end quality of service (QoS) requirements of applications. To address this challenge, this paper presents the integrated planning, allocation, and control (IPAC) framework, which provides decision-theoretic planning, dynamic resource allocation, and runtime system control to provide coordinated system adaptation and enable the autonomous operation of open DRE systems.  This paper presents two contributions to research on autonomic computing for open DRE systems. First, we describe the design of IPAC and show how IPAC resolves the challenges associated with the autonomous operation of a representative open DRE system case study. Second, we empirically evaluate the planning and adaptive resource management capabilities of IPAC in the context of our case study. Our experimental results demonstrate that IPAC enables the autonomous operation of open DRE systems by performing adaptive planning and management of system resources.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kulkarni, Chetan</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A prognosis case study for electrolytic capacitor degradation in DC-DC converters</style></title><secondary-title><style face="normal" font="default" size="100%">Annual Conference of the Prognostics and Health Management Society 2009</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Kulkarni_Biswas_Koutsoukos_PHM09.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Prognostics and Health Management Society</style></publisher><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location><abstract><style face="normal" font="default" size="100%">This paper proposes a model based approach for prognosis of DC-DC power converters. We briefly review the prognosis process, and present an overview of different approaches that have been developed. We study the effects of capacitor degradation on DC-DC converter performance by developing a combination of a thermal model for ripple current effects and a physics of failure model of the thermal effects on capacitor degradation. The derived degradation model of the capacitor is reintroduced into the DC-DC converter model to study changes in the system performance using Monte Carlo methods. The simulation results observed under different conditions and experimental setups for model verification are discussed. The paper concludes with comments and future work to be done.
</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Allocation of Hierarchically-Decomposable Tasks in a Sensor Web Contract Net</style></title><secondary-title><style face="normal" font="default" size="100%">The IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology (IAT)</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">WI-IAT '09</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2009</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1109/WI-IAT.2009.154</style></url></web-urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Kinnebrew &amp; Biswas - 2009 - IAT -- Efficient Alloc Hierarch-Decomp Tasks in Sensor Web CNet.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">IEEE Computer Society</style></publisher><pub-location><style face="normal" font="default" size="100%">Milan, Italy</style></pub-location><pages><style face="normal" font="default" size="100%">225–232</style></pages><isbn><style face="normal" font="default" size="100%">978-0-7695-3801-3</style></isbn><abstract><style face="normal" font="default" size="100%">In large, distributed systems, such as a sensor web, allocating resources to tasks that span multiple providers presents significant challenges. Individual subtasks associated with a task could potentially be assigned to a number of agents (e.g., when there is overlap in sensor or data processing capability among constituent sensor networks). This problem is further compounded by the dynamic nature of a sensor web, in which both desired tasks and resource availability change with time and environmental conditions. This paper presents a novel variation of the contract net protocol (CNP) for subtask allocation, which employs brokers to limit communication overhead in a two-phase CNP and aggregate domain information from groups of agents. Experimental results using this subtask allocation approach verify its efficiency and scalability. These results also suggest specific refinements and appropriate parameters for a variety of system configurations and operating conditions in sensor webs and other large multi-agent systems.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Robust differential protection with intermittent cable faults for aircraft AC generators</style></title><secondary-title><style face="normal" font="default" size="100%">Annual Conference of the Prognostics and Health Management Society, PHM09</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2009</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">San Diego, CA</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Xenofon Kousoukos</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Detection using intermittent observations for passive wireless sensors</style></title><secondary-title><style face="normal" font="default" size="100%">American Control Conference, ACC2009</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2009</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">St. Louis, Missouri</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Xenofon Kousoukos</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Optimal performance for detection systems in wireless passive sensor networks.</style></title><secondary-title><style face="normal" font="default" size="100%">17th Mediterranean Conference on Control and Automation, MED’09</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2009</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Thessaloniki, Greece</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Otte, William R</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Flexible Infrastructure for Distributed Deployment in Adaptive Sensor Webs</style></title><secondary-title><style face="normal" font="default" size="100%">The 2009 IEEE Aerospace Conference</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">adaptive distributed sensor web</style></keyword><keyword><style  face="normal" font="default" size="100%">automated provisioning</style></keyword><keyword><style  face="normal" font="default" size="100%">computationally constrained field environment</style></keyword><keyword><style  face="normal" font="default" size="100%">CORBA component model</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed deployment infrastructure</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed object management</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed sensors</style></keyword><keyword><style  face="normal" font="default" size="100%">footprint optimization</style></keyword><keyword><style  face="normal" font="default" size="100%">geophysics computing</style></keyword><keyword><style  face="normal" font="default" size="100%">hardware-dependent action</style></keyword><keyword><style  face="normal" font="default" size="100%">MACRO</style></keyword><keyword><style  face="normal" font="default" size="100%">multi-agent architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">multi-agent systems</style></keyword><keyword><style  face="normal" font="default" size="100%">optimisation</style></keyword><keyword><style  face="normal" font="default" size="100%">SEAMONSTER project</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Otte et al - 2009 - IEEE Aerospace -- Flex Infrastructure Distrib Deploy in Adapt Sensor Webs.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Big Sky, Montana</style></pub-location><pages><style face="normal" font="default" size="100%">1 -12</style></pages><abstract><style face="normal" font="default" size="100%">Distributed sensor Webs typically operate in dynamic environments where operating conditions, transient phenomena, availability of resources, and network connection quality change frequently and unpredictably. Often these changes can neither be completely anticipated nor accurately described during development or deployment. Our prior work has described how we developed agents and services that are capable of monitoring these changing conditions and adapting system parameters using the CORBA component model (CCM) deployment infrastructure as part of the multiagent architecture for coordinated responsive observations (MACRO) platform. Our recent application of MACRO to the South East Alaska monitoring network for Science, Telecommunications, Education, and Research (SEAMONSTER) project has identified new distributed deployment infrastructure challenges common to computationally constrained field environments in adaptive sensor Webs. These challenges include standardized execution of low-level hardware-dependent actions and on-going data tasks, automated provisioning of agents for heterogeneous field hardware, and minimizing deployment infrastructure overhead. This paper describes how we extended MACRO to address these sensor Web challenges by creating an action/effector framework standardizing the execution of lightweight actions and providing for automated provisioning of MACRO agents, in addition to footprint optimizations to the underlying CCM infrastructure.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Otte, William R</style></author><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Intelligent Resource Management and Dynamic Adaptation in a Distributed Real-time and Embedded Sensor Web System</style></title><secondary-title><style face="normal" font="default" size="100%">The 12th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing (ISORC)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">autonomous agent technologies</style></keyword><keyword><style  face="normal" font="default" size="100%">autonomous system adaptation</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed processing</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed real-time embedded systems</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed real-time system</style></keyword><keyword><style  face="normal" font="default" size="100%">dynamic adaptation</style></keyword><keyword><style  face="normal" font="default" size="100%">dynamic resource management</style></keyword><keyword><style  face="normal" font="default" size="100%">embedded sensor Web system</style></keyword><keyword><style  face="normal" font="default" size="100%">embedded systems</style></keyword><keyword><style  face="normal" font="default" size="100%">intelligent resource management</style></keyword><keyword><style  face="normal" font="default" size="100%">QoS-enabled component middleware</style></keyword><keyword><style  face="normal" font="default" size="100%">quality of service</style></keyword><keyword><style  face="normal" font="default" size="100%">quality-of-service</style></keyword><keyword><style  face="normal" font="default" size="100%">resource allocation</style></keyword><keyword><style  face="normal" font="default" size="100%">SEAMONSTER project</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/2009</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Kinnebrew et al - 2009 - ISORC -- Intell Resource Mgmt &amp; Dyn Adapt in DRE Sensor Web.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Tokyo, Japan</style></pub-location><pages><style face="normal" font="default" size="100%">135 -142</style></pages><abstract><style face="normal" font="default" size="100%">Sensor webs are often composed of servers connected to distributed real-time embedded (DRE) systems that operate in open environments where operating conditions, workload, resource availability, and connectivity cannot be accurately characterized a priori. The South East Alaska MOnitoring Network for Science, Telecommunications, Education, and Research (SEAMONSTER) project exhibits many common system management and dynamic operation challenges for effective, autonomous system adaptation in a representative sensor web. These challenges cover both field operation (e.g., power management through system sleep/wake cycles and reaction to local environmental changes) and server operation (e.g., system adaptation for new/modified goals, resource allocation for a changing set of applications, and configuration changes for fluctuating workload). This paper presents the results of integrating and applying quality-of-service (QoS)-enabled component middleware, dynamic resource management, and autonomous agent technologies to address these challenges in SEAMONSTER.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Integrated Approach to Parametric and Discrete Fault Diagnosis in Hybrid Systems</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">January, 2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Daigle_MJ_1_10_2008_An_Integra.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Institute for Software Integrated Systems</style></publisher><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ashraf Tantawy</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Aircraft AC Generators: Hybrid system modeling and simulation</style></title><secondary-title><style face="normal" font="default" size="100%">International Conference on Prognostics and Health Management, PHM08</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2008</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Denver, Colorado</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Otte, William R</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Suri, Dipa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Application of Middleware and Agent Technologies to a Representative Sensor Network</style></title><secondary-title><style face="normal" font="default" size="100%">The Eighth Annual NASA Earth Science Technology Conference (ESTC)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Otte et al - 2008 - NASA ESTC -- App of Middleware &amp; Agent Tech to Sensor Network.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">College Park, Maryland</style></pub-location><abstract><style face="normal" font="default" size="100%">Sensor networks are distributed real-time embedded (DRE) systems that often operate in open environments where operating conditions, workload, resource availability, and connectivity cannot be accurately characterized a priori. As with other open DRE systems, they must perform sequences of heterogeneous data collection, manipulation, and coordination tasks to meet specified system objectives. The South East Alaska MOnitoring Network for Science, Telecommunications, Education, and Research (SEAMONSTER) project illustrates many common system management and dynamic operation challenges in a representative sensor network, including adapting to changes in network topology, effective reaction to local environmental changes, and power management through system sleep/wake cycles. This paper discusses a case study for applying middleware and autonomous agent technologies from the Multi-agent Architecture for Coordinated Responsive Observations (MACRO) to these challenges in the SEAMONSTER sensor network.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Roychoudhury, Indranil</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author></secondary-authors><tertiary-authors><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></tertiary-authors><subsidiary-authors><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author></subsidiary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Simulation of Hybrid Systems: An Application to Electrical Power Distribution Systems</style></title><secondary-title><style face="normal" font="default" size="100%">22nd European Conference on Modeling and Simulation</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2008</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Cyprus</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Roychoudhury, Indranil</style></author><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Simulation of Hybrid Systems: An Application to Electrical Power Distribution Systems</style></title><secondary-title><style face="normal" font="default" size="100%">European Conference on Modeling and Simulation</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/RoychoudhuryEtAl_ECMS2008_Track_BG_PaperID_117.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Nicosia, Cyprus</style></pub-location></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nilabja Roy</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Toward Effective Multi-Capacity Resource Allocation in Distributed Real-Time and Embedded Systems</style></title><secondary-title><style face="normal" font="default" size="100%">11th IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">adaptive resource management</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed real-time embedded systems</style></keyword><keyword><style  face="normal" font="default" size="100%">fluctuating resource availability</style></keyword><keyword><style  face="normal" font="default" size="100%">middleware</style></keyword><keyword><style  face="normal" font="default" size="100%">middleware framework</style></keyword><keyword><style  face="normal" font="default" size="100%">multicapacity resource allocation</style></keyword><keyword><style  face="normal" font="default" size="100%">of bin-packing algorithms</style></keyword><keyword><style  face="normal" font="default" size="100%">QoS</style></keyword><keyword><style  face="normal" font="default" size="100%">real-time systems</style></keyword><keyword><style  face="normal" font="default" size="100%">resource allocation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/2008</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Roy et al - 2008 - ISORC -- Toward Effective Multi-capacity Resource Allocation in DRE Sys.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Orlando, Florida</style></pub-location><pages><style face="normal" font="default" size="100%">124 -128</style></pages><abstract><style face="normal" font="default" size="100%">Effective resource management for distributed real-time embedded (DRE) systems is hard due to their unique characteristics, including (1) constraints in multiple resources and (2) highly fluctuating resource availability and input workload. DRE systems can benefit from a middleware framework that enables adaptive resource management algorithms to ensure application QoS requirements are met. This paper identifies key challenges in designing and extending resource allocation algorithms for DRE systems. We present an empirical study of bin-packing algorithms enhanced to meet these challenges. Our analysis identifies input application patterns that help generate appropriate heuristics for using these algorithms effectively in DRE systems.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Roychoudhury, Indranil</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Patterson-Hine, Ann</style></author><author><style face="normal" font="default" size="100%">Poll, Scott</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Comprehensive Diagnosis Methodology for Complex Hybrid Systems: A Case Study on Spacecraft Power Distribution Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Technical Report</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/adapt-diagnosis_0.pdf</style></url></related-urls></urls><abstract><style face="normal" font="default" size="100%">The application of model-based diagnosis schemes to real systems introduces many significant challenges, such as building accurate system models for heterogeneous systems with complex behaviors, dealing with noisy measurements and disturbances during system operation, and producing valuable results in a timely manner with limited information and computational resources. The Advanced Diagnostics and Prognostics Testbed (ADAPT), deployed at NASA Ames Research Center, is a representative spacecraft electrical power distribution system that embodies a number of these challenges for developing realistic diagnosis and prognosis algorithms. ADAPT contains a large number of interconnected components, along with a number of circuit breakers and relays that enable a number of different power distribution configurations. The system includes electrical dc and ac loads, mechanical subsystems, such as motors, and fluid systems, such as pumps. The system components are susceptible to different types of faults that include unexpected changes in parameter values, discrete faults in switching elements, and sensor faults. This paper presents Hybrid TRANSCEND, a comprehensive model-based diagnosis scheme to address these challenges. The scheme uses the hybrid bond graph modeling language to systematically develop computational models and algorithms for hybrid state estimation, robust fault detection, and efficient fault isolation. The computational methods are implemented as a suite of software tools that enables analysis and testing through simulation, diagnosability studies, and deployment on the experimental testbed. Simulation and experimental results demonstrate the effectiveness of this methodology in efficient diagnosis of heterogeneous components for an embedded system.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author><author><style face="normal" font="default" size="100%">Suri, Dipa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Integrating Task Allocation, Planning, Scheduling, and Adaptive Resource Management to Support Autonomy in a Global Sensor Web</style></title><secondary-title><style face="normal" font="default" size="100%">The NASA Science Technology Conference (NSTC)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Kinnebrew et al - 2007 - NSTC -- Integ Task Alloc, Plan, Sched, &amp; Resource Mgmt for Autonomy Global SensorWeb.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">College Park, Maryland</style></pub-location><abstract><style face="normal" font="default" size="100%">NASA’s Earth Science Vision calls for a global sensor web comprised of heterogeneous platforms with on-board information processing, capable of orchestrating real-time collaborative operations with other platforms and ground stations. Such a global sensor web will be a system of systems, including many distributed real-time embedded (DRE) systems, such as multi-satellite formations. Individual systems of the sensor web must collect and analyze large quantities of data via sequences of heterogeneous data collection, manipulation, and coordination tasks to meet specified goals for earth science applications. In large DRE systems, such as those composing a global sensor web, the sheer number of available components often poses a combinatorial planning problem for identifying component sequences to achieve specified goals. Moreover, the dynamic nature of these systems requires runtime management and modification of deployed components.
We present the design of the Multi-agent Architecture for Coordinated Responsive Observations which includes two novel services contributing to the design and deployment of autonomous, predictable, and high performance DRE systems that operate in dynamic and uncertain environments: (i) the Spreading Activation Partial Order Planner (SA-POP) that performs decision-theoretic planning and scheduling using a spreading activation network to capture the probabilistic functional relationships between tasks (implemented as components) and goals; and (ii) the Resource Allocation and Control Engine (RACE), which is an open source adaptive resource management framework built atop standards-based QoS-enabled component middleware. We illustrate the effectiveness of our approach in the face of changing operational conditions, workloads, and resource availability, in the context of salient Earth science missions.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Gupta, Ankit</style></author><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Decision-Theoretic Planner with Dynamic Component Reconfiguration for Distributed Real-Time Applications</style></title><secondary-title><style face="normal" font="default" size="100%">The Eighth International Symposium on Autonomous Decentralized Systems (ISADS)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">data manipulation</style></keyword><keyword><style  face="normal" font="default" size="100%">decision theory</style></keyword><keyword><style  face="normal" font="default" size="100%">decision-theoretic planner</style></keyword><keyword><style  face="normal" font="default" size="100%">distributed real-time embedded systems</style></keyword><keyword><style  face="normal" font="default" size="100%">dynamic component reconfiguration</style></keyword><keyword><style  face="normal" font="default" size="100%">embedded systems</style></keyword><keyword><style  face="normal" font="default" size="100%">middleware</style></keyword><keyword><style  face="normal" font="default" size="100%">multisatellite application</style></keyword><keyword><style  face="normal" font="default" size="100%">planning</style></keyword><keyword><style  face="normal" font="default" size="100%">resource allocation</style></keyword><keyword><style  face="normal" font="default" size="100%">resource management</style></keyword><keyword><style  face="normal" font="default" size="100%">spreading activation partial order planner</style></keyword><keyword><style  face="normal" font="default" size="100%">task analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">task planning</style></keyword><keyword><style  face="normal" font="default" size="100%">task scheduling</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Kinnebrew et al - 2007 - ISADS -- Decision-Theoretic Planner w Dynamic Component Reconfig for Distrib RT Apps.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Sedona, Arizona</style></publisher><pages><style face="normal" font="default" size="100%">461 -472</style></pages><abstract><style face="normal" font="default" size="100%">Distributed real-time embedded (DRE) systems perform sequences of coordination and heterogeneous data manipulation tasks in dynamic environments to meet specified goals. Autonomous operation of DRE systems can benefit from the integrated operation of (1) a decision-theoretic spreading activation partial order planner (SA-POP) that combines task planning and scheduling in uncertain environments with (2) a resource allocation and control engine (RACE) middleware framework that integrates multiple resource management algorithms for (re)deploying and (re)configuring task sequence components in these systems. This paper demonstrates the effectiveness of SA-POP and RACE in managing and executing mission goals for a multi-satellite application. Our results show that combining planning, scheduling and resource constraints dynamically is the key to implementing autonomy in DRE systems</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Suri, Dipa</style></author><author><style face="normal" font="default" size="100%">Howell, Adam</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Otte, William R</style></author><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Multi-Agent Architecture Provides Smart Sensing for the NASA Sensor Web</style></title><secondary-title><style face="normal" font="default" size="100%">The 2007 IEEE Aerospace Conference</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">decision making</style></keyword><keyword><style  face="normal" font="default" size="100%">dynamic decision making</style></keyword><keyword><style  face="normal" font="default" size="100%">Earth science</style></keyword><keyword><style  face="normal" font="default" size="100%">geophysical techniques</style></keyword><keyword><style  face="normal" font="default" size="100%">intelligent sensors</style></keyword><keyword><style  face="normal" font="default" size="100%">interoperability</style></keyword><keyword><style  face="normal" font="default" size="100%">Lockheed Martin Advanced Technology Center</style></keyword><keyword><style  face="normal" font="default" size="100%">MACRO</style></keyword><keyword><style  face="normal" font="default" size="100%">multi-agent systems</style></keyword><keyword><style  face="normal" font="default" size="100%">multiagent architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">NASA sensor Web</style></keyword><keyword><style  face="normal" font="default" size="100%">networked sensor webs</style></keyword><keyword><style  face="normal" font="default" size="100%">open systems</style></keyword><keyword><style  face="normal" font="default" size="100%">remote sensing</style></keyword><keyword><style  face="normal" font="default" size="100%">remote sensing missions</style></keyword><keyword><style  face="normal" font="default" size="100%">smart sensing</style></keyword><keyword><style  face="normal" font="default" size="100%">terrestrial sensors</style></keyword><keyword><style  face="normal" font="default" size="100%">weather forecasting</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">03/2007</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Suri et al - 2007 - IEEE Aerospace -- Multi-Agent Architecture for Smart Sensing in NASA Sensor Web.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Big Sky, Montana</style></pub-location><pages><style face="normal" font="default" size="100%">1 -9</style></pages><abstract><style face="normal" font="default" size="100%">Remote sensing missions for Earth Science contribute greatly to the understanding of the dynamics of our planet. Conventional approaches however, impede the scientific community's ability to (1) generate and refine models of complex phenomena, such as, extended weather forecasting, (2) detect and rapidly respond to critical transient events (e.g., disasters, such as hurricanes and floods). This paper describes a more effective approach based on intelligent, networked sensor webs that incorporate seamless dynamic connectivity between spacecraft, aircraft, and in situ terrestrial sensors, employs reactive and proactive strategies for improved temporal, spectral, and spatial coverage of the earth and its atmosphere, and uses enhanced dynamic decision-making for rapid responses to changing situations. MACRO, an extension of our earlier work on a multi-agent framework for heterogeneous spacecraft constellations, will provide interoperability and autonomy to achieve the needs for smart sensing in NASA's proposed sensor web. The system capability will be demonstrated via a simulated but salient disaster management scenario on an existing hardware testbed at the Lockheed Martin Advanced Technology Center.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Roychoudhury, Indranil</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Efficient Simulation of Component-Based Hybrid Models Represented as Hybrid Bond Graphs</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">December</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Daigle_MJ_12_18_2006_Efficient_.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Institute for Software Integrated Systems</style></publisher><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Suri, Dipa</style></author><author><style face="normal" font="default" size="100%">Howell, Adam</style></author><author><style face="normal" font="default" size="100%">Shankaran, Nishanth</style></author><author><style face="normal" font="default" size="100%">Kinnebrew, John S</style></author><author><style face="normal" font="default" size="100%">Otte, William R</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Onboard Processing using the Adaptive Network Architecture</style></title><secondary-title><style face="normal" font="default" size="100%">The Sixth Annual NASA Earth Science Technology Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2006</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Suri et al - 2006 - NASA ESTC -- Onboard Processing using the Adaptive Network Architecture.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">College Park, Maryland</style></pub-location><abstract><style face="normal" font="default" size="100%">Many future earth and space science missions will be composed of multiple spacecraft requiring autonomous capabilities for both opportunistic and coordinated science observations. The Adaptive Network Architecture (ANA) is a software framework composed of multiple, heterogeneous software agents designed for real-time operation of constellations or formations of spacecraft. The ANA is built
upon mature terrestrial standards and best practices for software development, including CORBA Component middleware designed for distributed real-time embedded systems. In this paper we present the further development of the ANA's Science Agent to include a hierarchical computational architecture for reconfigurable on-board science processing. The architecture allows for runtime reconfiguration and/or redeployment of software components across a set of processors based on the available computational resources and changes in operating mode. Application of the science data processing framework to the upcoming Magnetospheric Multi-Scale (MMS) mission is also discussed.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Karsai, Gabor</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author><author><style face="normal" font="default" size="100%">Mahadevan, Nagabhushan</style></author><author><style face="normal" font="default" size="100%">Manders, Eric J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Model-based Software Tools for Integrated Vehicle Health Management</style></title><secondary-title><style face="normal" font="default" size="100%">The Second IEEE International Conference on Space Mission Challenges for Information Technology (SMC-IT)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Karsai_G_0_0_2006_Model_base.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Pasadina, CA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daigle, Matthew</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Relative Measurement Orderings in Diagnosis of Distributed Physical Systems</style></title><secondary-title><style face="normal" font="default" size="100%">43rd Annual Allerton Conference on Communication, Control, and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">September</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Daigle_MJ_9_0_2005_Relative_M.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Monticello, IL</style></pub-location><pages><style face="normal" font="default" size="100%">1707--1716</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Schwartz, Daniel</style></author><author><style face="normal" font="default" size="100%">Leelawong, Krittaya</style></author><author><style face="normal" font="default" size="100%">Vye, Nancy</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Learning by Teaching: A New Agent Paradigm for Educational Software</style></title><secondary-title><style face="normal" font="default" size="100%">Applied Artificial Intelligence</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Biswas__G_3_0_2005_Learning_b.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">19</style></volume><pages><style face="normal" font="default" size="100%">363--392</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author><author><style face="normal" font="default" size="100%">Karsai, Gabor</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Consistency-based Robust Diagnosis Approach for Temporal Causal Systems</style></title><secondary-title><style face="normal" font="default" size="100%">16th International Workshop on Principles of Diagnosis (DX '05)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">June</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Abdelwahed_S_6_0_2005_A_Consiste.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Monterey, CA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Roychoudhury, Indranil</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Designing Distributed Diagnosers for Complex Physical Systems</style></title><secondary-title><style face="normal" font="default" size="100%">16th International Workshop on Principles of Diagnosis</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">June</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Roychoudhu_I_6_0_2005_Designing_.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Monterey, CA</style></pub-location><pages><style face="normal" font="default" size="100%">31--36</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Manders, Eric J.</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Ramirez, John W.</style></author><author><style face="normal" font="default" size="100%">Mahadevan, Nagabhushan</style></author><author><style face="normal" font="default" size="100%">Wu, Jian</style></author><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Model-Integrated Computing Tool-suite for fault adaptive control</style></title><secondary-title><style face="normal" font="default" size="100%">15th Intl Workshop on Principles of Diagnosis (DX '04)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">June</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Manders_EJ_6_0_2005_A_Model_In_.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Carcassonne, France</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author><author><style face="normal" font="default" size="100%">Wu, Jian</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Manders, Eric J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hierarchical Online Control Design for Autonomous Resource Management in Advanced Life Support Systems</style></title><secondary-title><style face="normal" font="default" size="100%">35th SAE International Conference on Environmental Studies (ICES '05)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">July</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Abdelwahed_S_7_0_2005_Hierarchic.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Rome, Italy</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Bonasso, Pierre</style></author><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Requirements for an Autonomous Control Architecture for Advanced Life Support System</style></title><secondary-title><style face="normal" font="default" size="100%">35th SAE International Conference on Environmental Systems (ICES'05)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">July</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Rome , Italy</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wu, Jian</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hybrid Control System Design and Implementation for a Three-tank Testbed</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Conference on Control Application</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">August</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Wu_J_8_0_2005_Hybrid_Con.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Toronto, Canada</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author><author><style face="normal" font="default" size="100%">Karsai, Gabor</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Robust State-based Supervisory Control of Discrete Event Systems</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE Conference on Control Application</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">August</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Toronto, Canada</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author><author><style face="normal" font="default" size="100%">Wu, Jian</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Ramirez, John W.</style></author><author><style face="normal" font="default" size="100%">Manders, Eric J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Online Fault Adaptive Control for Efficient Resource Management in Advanced Life Support Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Habitation - Intl. Journal for Human Support Research</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Abdelwahed_S_0_0_2005_Online_Fau.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">10</style></volume><pages><style face="normal" font="default" size="100%">105--115</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sztipanovits, Janos</style></author><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Frampton, Ken</style></author><author><style face="normal" font="default" size="100%">Balasubramanian, Jaiganesh</style></author><author><style face="normal" font="default" size="100%">Howard, Larry</style></author><author><style face="normal" font="default" size="100%">Karsai, Gabor</style></author><author><style face="normal" font="default" size="100%">Koo, T. John</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Schmidt, Douglas C.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Introducing Embedded Software and Systems Education and Advanced Learning Technology in an Engineering Curriculum</style></title><secondary-title><style face="normal" font="default" size="100%">ACM Transactions on Embedded Systems</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Abdelwahed, Sherif</style></author><author><style face="normal" font="default" size="100%">Koutsoukos, Xenofon</style></author><author><style face="normal" font="default" size="100%">Gandhe, Jyoti</style></author><author><style face="normal" font="default" size="100%">Manders, Eric J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Toward Distributed Diagnosis of Complex Physical Systems</style></title><secondary-title><style face="normal" font="default" size="100%">The Forty-Second Annual Allerton Conference on Communication, Control, and Computing</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">September</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://isis.vanderbilt.edu/sites/default/files/Biswas_G_9_0_2004_Toward_Dis.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Champgain, IL</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Biswas, Gautam</style></author><author><style face="normal" font="default" size="100%">Cordier, Marie-Odile</style></author><author><style face="normal" font="default" size="100%">Lunze, Jan</style></author><author><style face="normal" font="default" size="100%">Trave-Massuyes, Louise</style></author><author><style face="normal" font="default" size="100%">Staroswiecki, Marcel</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Diagnosis of Complex 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