## Activities (visiting professors,conferences, seminars.....)

LUDOVIC METIVIER, CEA (Commissariat à l'Energie Atomiques et aux Energies Alternatives), Saclay, France. Seminario:"An efficient bound constrained DAE solver for the simulation of liquid-liquid extraction", Maggio 2011

CORALIA CARTIS, School of Mathematics, University of Edinburgh, Scotland, UK . Seminario:"Optimal Newton-type methods for nonconvex smooth optimization", Settembre 2011

MARGHERITA PORCELLI, Department of Mathematics,University of Namur (FUNDP), Namur, Belgio. Seminario:"Numerical optimization methods in structural design", Novembre 2011

JACEK GONDZIO, School of Mathematics, University of Edinburgh, Scotland, UK. Seminar: "Interior point methods for optimization: Opportunities in engineering applications", May 2010

ZHENG-JIAN BAI, School of Mathematical Sciences, Xiamen University, People's Republic of China. Seminar: "Robust and minimum norm partial quadratic eigenvalue assigment in vibrating systems: a new optimization approach", Luglio 2009

RICARDO NANCULEF ALEGRIA, Federico Santa Maria Technical University, Chile . Seminar: "Support Vector Models: An Introduction and Recent Contributions", Luglio 2009

PHILIPPE TOINT, Department of Mathematics,The University of Namur (FUNDP), May-June 2009

MICHAEL OVERTON, Courant Institute of Mathematical Sciences, New York University, USA. Seminar: "Nonsmooth, Nonconvex Optimization: Theory, Algorithms and Applications", April 2008

JACEK GONDZIO, School of Mathematics, University of Edinburgh, Scotland, UK. Seminar: "Solving Very Large Scale Optimization Problems with Interior Point Methods", April-May 2008

MILA NIKOLOVA, Centre de Mathématiques et Leurs Applications (CMLA, CNRS UMR 8536), France, September 2008

EMIL CATINAS, Institutul de Calcul "Tiberiu Popoviciu", Cluj-Napoca, Romania. Seminar: "Local convergence of iterative methods for nonlinear systems and fixed point problems", March 2007

JACEK GONDZIO, School of Mathematics, University of Edinburgh, Scotland, UK. Seminars: "Interior point methods for large scale optimization: why are they so efficient? part I,II,III", March 2006

VALERIA SIMONCINI, Dipartimento di Matematica, Università di Bologna, Seminar: "Precondizionatori strutturali per sistemi algebrici", July 2006

LOTHAR REICHEL, Department of Mathematical Sciences, Kent State University, Seminar: "Iterative methods for large ill posed problems", Octobre 2006

RAYMOND CHAN, Department of Mathematics, Chinese University of Hong Kong, Seminar: "Two-phase methods for deblurring images corrupted by impulse plus gaussian noise", December 2006