# Publications

## Preprints

- L. Paunonen, R. P. T. Wang and N. Vanspranghe, Weakly elliptic damping gives sharp decay, submitted, 2024.

## Journal articles

- L. Paunonen, D. Seifert and N. Vanspranghe, A non-uniform Datko-Pazy theorem for bounded operator semigroups, to appear in
*Studia Mathematica*, 2024. - N. Vanspranghe and L. Brivadis, Output regulation of infinite-dimensional nonlinear systems: a forwarding approach for contraction semigroups,
*SIAM Journal on Control and Optimization*, 61(4):2571-2594, 2023. - N. Vanspranghe, F. Ferrante and C. Prieur, Stabilization of the wave equation through nonlinear Dirichlet actuation,
*ESAIM: Control, Optimisation and Calculus of Variations*, 29(57), 2023. - N. Vanspranghe, F. Ferrante and C. Prieur, Velocity stabilization of a wave equation with a nonlinear dynamic boundary condition,
*IEEE Transactions on Automatic Control*, 67(12):6786–6793, 2022.

## Conference papers

- J. Kosonen, L. Paunonen and N. Vanspranghe, Polynomial stability of coupled waves with weak indirect damping, MTNS 2024, Cambridge, United Kingdom.
- N. Vanspranghe, L. Brivadis and L. Paunonen, On forwarding techniques for stabilization and set-point output regulation of semilinear infinite-dimensional systems, IEEE Conference on Decision and Control, Singapore, 2023.
- P. Lorenzetti, L. Paunonen, N. Vanspranghe and G. Weiss, Saturating integral control for infinite-dimensional linear systems, IEEE Conference on Decision and Control, Singapore, 2023.
- N. Vanspranghe, Wave equation with hyperbolic boundary condition: a frequency domain approach, IFAC CPDE 2022 Workshop on Control of Systems Governed by Partial Differential Equations, Kiel, Germany.
- N. Vanspranghe, F. Ferrante and C. Prieur, Stabilization of the wave equation by the mean of a saturating Dirichlet feedback, IFAC Conference on Modelling, Identification and Control of Nonlinear Systems, Tokyo, Japan, 2021.
- N. Vanspranghe, F. Ferrante and C. Prieur, Control of a wave equation with a dynamic boundary condition, IEEE Conference on Decision and Control, Jeju Island, South Korea, 2020.

## Theses

- N. Vanspranghe, Contributions à la théorie du contrôle des systèmes non-linéaires en dimension infinie, PhD thesis, 2022.
*Academic Thesis Prize from Université Grenoble Alpes.* - N. Vanspranghe, Parcimonie dans les problèmes d’observation, Master thesis, 2019.

## Talks

- Relaxed admissibility and sharp transfer function estimates for ill-posed systems,
*Systems Theory*(special session) International Workshop on Operator Theory and Applications, Canterbury, August 2024. - Frequency domain estimates for ill-posed systems and Neumann stabilization of the wave equation, AGENT Forum (Analysis, Geometry and Number Theory), Jyväskylä, May 2024.
- Different approaches to integral action in nonlinear infinite-dimensional dynamics, EDP, commande et observation des systèmes (invited talk), LAAS-CNRS, Toulouse, October 2023.
- Non-uniform Datko-Pazy criteria and asymptotics of contraction semigroups,
*Operator Semigroups: Theory and Applications*(special session), International Workshop on Operator Theory and Applications, Helsinki, August 2023. - Output regulation of nonlinear infinite-dimensional systems,
*Control and Optimization in PDEs*(minisymposium), IFIP TC7 Conference on System Modeling and Optimisation, Warsaw, July 2022. - Output regulation for infinite-dimensional systems: a forwarding-based approach, Séminaire d’automatique du plateau de Saclay, Laboratoire des Signaux et Systèmes, CentraleSupélec, October 2021.
- Saturated boundary stabilization of the wave equation in the Dirichlet boundary condition: asymptotic stability and non-uniform decay rates, DPS Online Seminar, April 2021.