Papers in this collection partly represent the set of talks that were presented at Texas Tech University on the occasion of Daya's memorial workshop in the year 2007. Daya had a varied interest in the field of Dynamics and Control Theory and the papers bring out the essence of his involvement in these activities. He also had a large number of collaborators and this collection represent a good fraction of them. The papers included here cover his interest in control theory. Also included are papers from application areas that we believe are of strong interest to him.

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Type II Diabetes and Obesity: A Control Theoretic Model.- Dynamic Network Modeling of Diurnal Genes in Cyanobacteria.- On Stability of Limit Cycles of a Prototype Problem of Piecewise Linear Systems.- On the Existence and Uniqueness of Minimum Time Optimal Trajectory for a Micro Air Vehicle under Wind Conditions.- A Precise Formulation and Solution of the Drag Racer and Hot Rodder Problems.- An Information Space View of "Time": From Clocks to Open-Loop Control.- Control System Design for the Capsubot.- On the Topology of Liapunov Functions for Dissipative Periodic Processes.- Global Controllability of Switched Affine Systems.- Control and Observation of the Matrix Riccati Differential Equation.- Nonlinear Locally Lipschitz Output Regulation in Presence of Non-hyperbolic Zero-Dynamics.- On the Observability of Nonlinear and Switched Systems.- Feedback Stabilization of Solitons and Phonons Using the Controlled Lax Form.- Global Asymptotic Controllability of Polynomial Switched Systems and Their Switching Laws.- Semi-global Output Feedback Stabilization of a Class of Non-uniformly Observable and Non-smoothly Stabilizable Systems.