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Foreword; Publications by Piero Villaggio; Articles on Journals; Books; Preface; Acknowledgements; Contents; Molding Direction Constraints in Structural Optimization via a Level-Set Method; 1 Introduction; 2 Setting of the Problem; 3 Level-Set Framework; 3.1 Shape Representation; 3.2 Signed Distance Function; 3.3 Ersatz Material; 4 Casting Process; 5 Formulation of the Molding Direction Constraint; 5.1 Molding Direction Condition on Design Velocity; 5.2 Generalized Molding Constraint; 5.3 Uniform Cross-section Surface Constraint; 6 Shape Derivative
6.1 Derivative of the Condition on Design Velocity6.2 Derivative of the Generalized Molding Constraint; 6.3 Derivative of the Uniform Cross-section Constraint; 7 Numerical Examples; 7.1 Molding Direction; 7.1.1 Molding Direction and Maximum Thickness; 7.1.2 Molding Direction and Minimum Thickness; 7.2 Uniform Cross-section; References; Adaptive Control for Weakly Minimum Phase Linear Infinite-Dimensional Systems in Hilbert Space Using a Zero Filter; 1 Introduction; 2 Adaptive Robust Tracking with Disturbance Rejection; 3 Ideal Trajectories
4 Ideal Trajectory Existence and Uniqueness: Normal Form5 Transmission Zeros of a Linear Infinite-Dimensional System; 6 Stability of the Error System: Almost Strict Dissipativity; 7 Robust Stabilization of Weakly Nonminimum Phase Infinite-Dimensional Systems; 8 Application: Adaptive Control of Unstable Diffusion Equations Described by Self-Adjoint Operators with Compact Resolvent; 9 Perturbation Results; 10 Conclusions; Appendix 1: Proofs of Lemmae 1, 2, and Theorem 1; Appendix 2: Proof of Theorem 2; References
Aeroelasticity of the PrandtlPlane: Body Freedom Flutter, Freeplay, and Limit Cycle Oscillation1 PrandtlPlane: An Introduction; 1.1 Aerodynamic Properties of Box Wings; 1.1.1 Prandtl's Work and Successive Studies; 1.1.2 Extension of Prandtl's Results; 1.1.3 More Refined Model: Wake Shape; 1.1.4 Viscous and Compressible Aerodynamics; 1.2 Aircraft Synthesis; 1.3 Aeroelasticity; 1.3.1 Box Wing; 1.3.2 PrandtlPlane; 2 Contribution of the Present Study; 3 Theoretical Highlights Regarding the Computational Tools; 4 Aeroelastic Models; 4.1 PrP250v1; 4.2 PrP250v2Al; 4.2.1 The Original Model
4.2.2 The Modified Model: PrP250v2Al4.3 PrP250v2Comp; 4.3.1 The Original Model; 4.3.2 The PrP250v2Comp Model; 5 Flutter Analysis of the PrP250v1; 5.1 "Constrained'' Model; 5.1.1 Modal Analysis; 5.1.2 Flutter; 5.1.3 Energy Transfer and Limit Cycle Oscillation; 5.1.4 Effects of Freeplay; 5.2 "Free'' Model; 6 Flutter Analysis of the PrP250v2Al; 6.1 "Constrained'' Model; 6.1.1 Modal Analysis; 6.1.2 Flutter (No Compressibility Effects); 6.1.3 Matched Flutter Analysis; 6.1.4 Considerations; 6.2 "Free'' Model; 6.2.1 Modal Analysis; 6.2.2 Matched Flutter Analysis
6.1 Derivative of the Condition on Design Velocity6.2 Derivative of the Generalized Molding Constraint; 6.3 Derivative of the Uniform Cross-section Constraint; 7 Numerical Examples; 7.1 Molding Direction; 7.1.1 Molding Direction and Maximum Thickness; 7.1.2 Molding Direction and Minimum Thickness; 7.2 Uniform Cross-section; References; Adaptive Control for Weakly Minimum Phase Linear Infinite-Dimensional Systems in Hilbert Space Using a Zero Filter; 1 Introduction; 2 Adaptive Robust Tracking with Disturbance Rejection; 3 Ideal Trajectories
4 Ideal Trajectory Existence and Uniqueness: Normal Form5 Transmission Zeros of a Linear Infinite-Dimensional System; 6 Stability of the Error System: Almost Strict Dissipativity; 7 Robust Stabilization of Weakly Nonminimum Phase Infinite-Dimensional Systems; 8 Application: Adaptive Control of Unstable Diffusion Equations Described by Self-Adjoint Operators with Compact Resolvent; 9 Perturbation Results; 10 Conclusions; Appendix 1: Proofs of Lemmae 1, 2, and Theorem 1; Appendix 2: Proof of Theorem 2; References
Aeroelasticity of the PrandtlPlane: Body Freedom Flutter, Freeplay, and Limit Cycle Oscillation1 PrandtlPlane: An Introduction; 1.1 Aerodynamic Properties of Box Wings; 1.1.1 Prandtl's Work and Successive Studies; 1.1.2 Extension of Prandtl's Results; 1.1.3 More Refined Model: Wake Shape; 1.1.4 Viscous and Compressible Aerodynamics; 1.2 Aircraft Synthesis; 1.3 Aeroelasticity; 1.3.1 Box Wing; 1.3.2 PrandtlPlane; 2 Contribution of the Present Study; 3 Theoretical Highlights Regarding the Computational Tools; 4 Aeroelastic Models; 4.1 PrP250v1; 4.2 PrP250v2Al; 4.2.1 The Original Model
4.2.2 The Modified Model: PrP250v2Al4.3 PrP250v2Comp; 4.3.1 The Original Model; 4.3.2 The PrP250v2Comp Model; 5 Flutter Analysis of the PrP250v1; 5.1 "Constrained'' Model; 5.1.1 Modal Analysis; 5.1.2 Flutter; 5.1.3 Energy Transfer and Limit Cycle Oscillation; 5.1.4 Effects of Freeplay; 5.2 "Free'' Model; 6 Flutter Analysis of the PrP250v2Al; 6.1 "Constrained'' Model; 6.1.1 Modal Analysis; 6.1.2 Flutter (No Compressibility Effects); 6.1.3 Matched Flutter Analysis; 6.1.4 Considerations; 6.2 "Free'' Model; 6.2.1 Modal Analysis; 6.2.2 Matched Flutter Analysis