It is with great pleasure that I offer my reflections on Professor Anthony N. Michel's retirement from the University of Notre Dame. I have known Tony since 1984 when he joined the University of Notre Dame's faculty as Chair of the Depart ment of Electrical Engineering. Tony has had a long and outstanding career. As a researcher, he has made im portant contributions in several areas of systems theory and control theory, espe cially stability analysis of large-scale dynamical systems. The numerous awards he received from the professional societies, particularly the Institute of Electrical and Electronics Engineers (IEEE), are a testament to his accomplishments in research. He received the IEEE Control Systems Society's Best Transactions Paper Award (1978), and the IEEE Circuits and Systems Society's Guillemin-Cauer Prize Paper Award (1984) and Myril B. Reed Outstanding Paper Award (1993), among others. In addition, he was a Fulbright Scholar (1992) and received the Alexander von Hum boldt Forschungspreis (Alexander von Humboldt Research Award for Senior U.S. Scientists) from the German government (1997). To date, he has written eight books and published over 150 archival journal papers. Tony is also an effective administrator who inspires high academic standards.

Inhalt
I: Issues in Stability Analysis.- 1 Wave-Digital Concepts and Relativity Theory.- 2 Time, Systems, and Control: Qualitative Properties and Methods.- 3 Asymptotic Stability of Multibody Attitude Systems.- 4 Robust Regulation of Polytopic Uncertain Linear Hybrid Systems with Networked Control System Applications.- 5 Stability Analysis of Swarms in a Noisy Environment.- 6 Stability of Discrete Time-Varying Linear Delay Systems and Applications to Network Control.- 7 Stability and L2 Gain Analysis of Switched Symmetric Systems.- II: Neural Networks and Signal Processing.- 8 Approximation of Input-Output Maps using Gaussian Radial Basis Functions.- 9 Blind Source Recovery: A State-Space Formulation.- 10 Direct Neural Dynamic Programming.- 11 Online Approximation-Based Aircraft State Estimation.- 12 Evolutionary Multiobjective Optimization: Qualitative Analysis and Design Implementation.- 13 Set-Membership Adaptive Filtering.- III: Power Systems and Control Systems.- 14 Trajectory Sensitivity Theory in Nonlinear Dynamical Systems: Some Power System Applications.- 15 Emergency Control and Special Protection Systems in Large Electric Power Systems.- 16 Power System Stability: New Opportunities for Control.- 17 Data Fusion Modeling for Groundwater Systems using Generalized Kalman Filtering.- 18 (Control, Output) Synthesis: Algebraic Paradigms.- 19 The Adaptive Dynamic Programming Theorem.- 20 Reliability of SCADA Systems in Offshore Oil and Gas Platforms.- 21 Power Control and Call Admission Control for DS-CDMA Cellular Networks.