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Program
For plenary conferences, speakers are allocated a 60-minute time slot, structured as follows:
For mini-symposiums, speakers are allocated a 30-minute time slot, structured as follows:
PicoF Colloquium 2025 - Program Schedule    PicoF International Colloquium 2025Inverse Problems, Control and Shape Optimization📅 October 28-31, 2025
🏨 Méhari Hammamet Hotel
📍 Hammamet, Tunisia
Day 1: Tuesday, October 28, 2025
8:00 - 8:30
Registration & Opening Ceremony
8:30 - 9:30
Plenary Session
Keynote Speaker: Fioralba Cakoni
The Control of Scattered Field for Linear and Nonlinear Scattering Media
9:30 - 10:00
Coffee Break & Networking
10:30 - 13:00
Parallel Mini-symposium Sessions
Session A: Inverse Problems
Chair: Zouhour Rezig
An inverse boundary value problem on manifolds: Examples in the Euclidean case
Stable recovery of a time dependent matrix potential for wave equation from arbitrary measurements
10:30 - 11:00
Inverse problems for a Schrodinger equation defined in an unbounded domain
11:00 - 11:30
Identification of Unbounded Electric Potentials through Asymptotic Boundary Spectral Data
11:30 - 12:00
An inverse problem for a Riemannian non-stationary transport equation with time-dependent coefficients
12:00 - 12:30
Session B: Inverse Problems
Chair: Mohamed Fahmi Ben Hassen
Advanced Computational Strategies for Inverse Problems
On a Hybrid Method for Inverse Scattering Problems and Applications in Elastography
10:30 - 11:00
Processing poor experimental databases via topological derivative based methods
11:00 - 11:30
On the design of discrete cross-diffusion filters
11:30 - 12:00
Bi-level iterative regularization for inverse problems in nonlinear evolution PDEs and astrophysics applications
12:00 - 12:30
Session C: Control
Chair: Hichem Ramoul and Moez Khenissi
Applied Inverse Problems and Partial Differential Equations
Adaptive finite element method for solution of electromagnetic coefficient inverse problem
10:30 - 11:00
Recent advances in anisotropic inverse problems
11:00 - 11:30
Spectral properties of radiation for the Helmholtz equation with a random coefficient
11:30 - 12:00
olving Inverse chemical problems via the Adjoint method: A case study on Uranium In-Situ Recovery
12:00 - 12:30
TBA
12:30 - 13:00
13:00 - 15:00
Lunch Break
15:00 - 16:00
Plenary Session
Keynote Speaker: Slim Chaabane
On some inverse problems of parameter identification in second order elliptic partial differential equations
16:00 - 16:30
Afternoon Coffee Break
16:30 - 18:30
Parallel Mini-symposium Sessions
Session D: Inverse Problems
Chair: Saber Amdouni and Laetitia Caille
Regularization Strategies for Inverse Problems in Physics and Engineering Applications
Shear-wave speed estimation in ultrasound time-harmonic elastography
16:30 - 17:00
Simultaneous heat source identification and thermal field reconstruction using the fading regularization method applied to noisy experimental data
17:00 - 17:30
Fading Regularization for the Cauchy Problem in Helmholtz Equation via Boundary Integral Methods
17:30 - 18:00
Identification of material properties and reconstruction of boundary conditions from partial experimental displacement fields
18:00 - 18:30
Session E: Shape Optimization
Chair: Eric Bonnetier
Shape optimization on the boundary
Shape optimization for contact problems
16:30 - 17:00
Shape and topology optimization of regions supporting boundary conditions
17:00 - 17:30
On the asymptotic effect of Robin boundary conditions on small subsets of the boundary
17:30 - 18:00
TBA
18:00 - 18:30
20:00 - 21:00
Roundtable Discussion: Artificial Intelligence in Scientific Research
Moderator: Prof. Mohamed Jaoua
Artificial Intelligence
Day 2: Wednesday, October 29, 2025
8:30 - 9:30
Plenary Session
Keynote Speaker: Luisa Faella
The Nonlinear Inverse Obstacle Problem and the Monotonicity Principle
9:30 - 10:00
Coffee Break
10:30 - 12:30
Parallel Mini-symposium Sessions
Session G: Control
Chair: Sylvain Ervedoza
Observation and Control for PDE
Exact boundary controllability of semilinear wave equations
10:30 - 11:00
Solving inverse source wave problem from observability to observer design
11:00 - 11:30
On the stability of a hyperbolic inverse problem
11:30 - 12:00
Quantitative unique continuation for nonregular perturbations of the Laplacian
12:00 - 12:30
Session H: Inverse Problems
Chair: Renaud Ferrier and Mohamed Larbi Kadri
Machine learning and sparsity for identification in physics
Parsimonious identification of a viscoelastic model using the mCRE framework and Lasso regularization
10:30 - 11:00
Sparse space-heterogeneous, physics-constrained PDE reconstruction for defect identification through low-frequency mechanics
11:00 - 11:30
Meta-Learning-Based Concrete Strength Prediction Using Stratified CatBoost Models and Domain-Informed Features
11:30 - 12:00
TBA
12:00 - 12:30
Session I: Inverse Problems
Chair: Laurent Baratchart
Structured inverse source problems
Inverse Problems in Micromagnetic Tomography
10:30 - 11:00
Uniqueness for TV-Norm Regularized Inverse Problems with Source Term in Divergence Form
11:00 - 11:30
Electrocardiographic imaging with vector-valued measures
11:30 - 12:00
Optimal discretizations of tomographic projection operators
12:00 - 12:30
12:30 - 15:00
Lunch Break
15:00 - 16:00
Plenary Session
Keynote Speaker: Jérémi Dardé
On observability and source reconstruction problem for Grushin-Baouendi type equations
16:00 - 16:30
Afternoon Coffee Break
16:30 - 18:30
Parallel Mini-symposium Sessions
Session J: Inverse Problems
Chair: Nesrine Aroua
Inverse Problems for PDEs: Theory, Computation, and Applications
X-ray tomography via nonlinear waves
16:30 - 17:00
Identification of Stimuli Currents in the Stochastic Cardiac Bidomain Model
17:00 - 17:30
Sampling Methods in Inverse Scattering problem for the Magnetic Schrodinger Operator
17:30 - 18:00
Stability for an inverse spectral problem of the biharmonic operator
18:00 - 18:30
Session K: Inverse Problems
Chair: Zakaria Belhachmi and Houcine Meftahi
Recent advances in inverse problems and shape optimization for PDEs
Support identification for parameter variations in a PDE system via regularized methods
16:30 - 17:00
An inverse obstacle problem for Stokes flow under Navier boundary condition
17:00 - 17:30
Optimal placement of sensors via distance criteria
17:30 - 18:00
Identification and control of point sources locations in unsteady Newtonian Flow
18:00 - 18:30
Day 3: Thursday, October 30, 2025
8:30 - 9:30
Plenary Session
Keynote Speaker: Lisl Weynans
An immersed boundary method for the inverse problem of EIT
9:30 - 10:00
Coffee Break
10:30 - 13:00
Parallel Mini-symposium Sessions
Session M: Inverse Problems
Chair: Laurent Bourgeois
Discretization aspects of the regularization methods for ill-posed PDE problems
Optimality of stabilized finite element methods for elliptic unique continuation
10:30 - 11:00
Unique continuation for the wave equation: the stability landscape
11:00 - 11:30
Finite element discretization aspects of the iterated quasi-reversibility method
11:30 - 12:00
Convergence of a time finite difference scheme for solving an inverse problem via a mixed variational formulation : Application to tsunami reconstruction
12:00 - 12:30
Session N: Inverse Problems -Shape Optimization
Chair: Maatoug Hassine, Lekbir Afraites and Julius Fergy Rabago
Shape inverse problems, theory and applications
Inverse Shape Identification in Advection-Diffusion Equations using ADMM and Coupled Complex Boundary Methods
10:30 - 11:00
An Inverse Shape Optimization Approach for Localizing Subdermal Tumors and Burns
11:00 - 11:30
Reconstruction of Metal-Semiconductor Interfaces using the Kohn-Vogelius formulation and the Topological Gradient method
11:30 - 12:00
Shape optimization of a thermoelastic body under thermal uncertainties
12:00 - 12:30
Bayesian recovery of time-varying fractional order in an anomalous diffusion equation and applications
12:30 - 13:00
Session O: Inverse Problems-Optimization
Chair: Ionel Sorin Ciuperca
Inverse problems and control in biomathematics
Physics-Informed and Stochastic Control-Based Strategies for Robust Epidemiological Forecasting
10:30 - 11:00
Models of mosquito population control strategies for fighting against arboviruse
11:00 - 11:30
Protecting Susceptible or Isolating Infected Individuals in SIR Models: An Optimal Control Approach
11:30 - 12:00
Estimation du taux de division cellulaire pour un modèle de croissance-fragmentation
12:00 - 12:30
13:00 - 15:00
Lunch Break
15:00 - 18:00
Excursion: Cultural and Historical Tour of Hammamet
Guided tour of the Medina and historic sites
20:00 - 21:00
Roundtable Discussion: Green Hydrogen - Future Perspectives
Moderator: Prof. Chiheb Bouden
Renewable Energy
Day 4: Friday, October 31, 2025
8:30 - 9:30
Plenary Session
Keynote Speaker: Marc Bonnet
Computational framework for some shape and slip optimization problems in Stokes flows
9:30 - 10:00
Coffee Break
10:30 - 12:30
Parallel Mini-symposium Sessions
Session P: Inverse Problems-Shape Optimization
Chair: Marcella Bonazzoli and Houssem Haddar
One-shot methods for shape optimization and inverse problems
Reconstruction of a piecewise constant conductivity by coupling the Kohn-Vogelius type functional with a non-overlapping DDM
10:30 - 11:00
Numerical Assessment of a Multi-Step OneShot Approach for Frequency-Domain Acoustic FWI
11:00 - 11:30
One-Shot Methods for Efficient Shape Optimization and Layerparallel Training of Deep RNNs
11:30 - 12:00
On the convergence analysis of one-shot inversion methods
12:00 - 12:30
Session Q: Inverse Problems-Control
Chair: Laetitia Giraldi
Optimization and Control in Physical Modeling
Desensitizing control for the heat equation with respect to domain variations
10:30 - 11:00
Multi-scale analysis and reduced models for low-Reynolds swimmers
11:00 - 11:30
Inverse Helmholtz problems : consistency and sparsity
11:30 - 12:00
Guiding swarms of micro-swimmers through collective patterns
12:00 - 12:30
Session R: Inverse Problems
Chair: Saber Amdouni
Modern Approaches to Ill-Posed Problems: Regularization, Energy Spaces, and Kernel Methods
Generalized Error Bounds for Tikhonov Regularization in Ill-Posed Problems: From Abstract Theory to Game-Theoretic Applications
10:30 - 11:00
Boundary data completion for advection-diffusion equations
11:00 - 11:30
Data Completion Problem by Reproducing Kernel Hilbert Spaces
11:30 - 12:00
Robustness Analysis of an Energy Space Method for Solving a Data Completion Problem in Linear Elasticity
12:00 - 12:30
12:30 - 15:00
Lunch Break
15:00 - 16:00
Plenary Session
Keynote Speaker: Yosra Boukari
Integral Equation-Based Approaches for Solving Data Completion Problems
16:00 - 16:30
Afternoon Coffee Break
16:30 - 18:30
Parallel Mini-symposium Sessions
Session S: Inverse Problems
Chair: Abdessatar Khelifi
Mathematical Modeling and Inverse Problems: Concepts and Applications
Determining of electromagnetic parameters in Maxwell's equations from partial boundary measurements
16:30 - 17:00
Stability estimate for an inverse problem of a hyperbolic heat equation from boundary measurement
17:00 - 17:30
Asymptotic expansion for solution of Maxwell equation in domain with highly oscilating boundary
17:30 - 18:00
Asymptotic behavior for eigenvalues and eigenfunctions associated to Stokes operator in the presence of a rapidly oscillating boundary
18:00 - 18:30
Session T: Inverse Problems and Shape Optimization
Chair: Bochra Mejri and Otmar Scherzer
Variational and Geometric Approaches in Image Processing
Motion analysis with the optical flow for constant and varying illumination: an optimal transport point of view
16:30 - 17:00
Geometric similarity measure for multimodal image registration
17:00 - 17:30
Vertex characterization via second-order topological derivatives
17:30 - 18:00
Title: TBA
18:00 - 18:30
18:30 - 18:45
Closing Ceremony
Concluding remarks
PicoF International Colloquium 2025 | Organized by LAMSIN and University of Tunis El Manar Contact: mahjoubenit@gmail.com | Website: www.picof2025.org |
