AXEL OSSES  (pdf version)

email: axosses*dim.uchile.cl
http://www.dim.uchile.cl/~axosses 
Departamento de Ingeniería Matemática 
Facultad de Ciencias Físicas y Matemáticas
Universidad de Chile, 5th floor, Office 513
Av. Blanco Encalada 2120
Casilla 170/3 correo 3, Santiago, Chile
TEL: (56-2) 978 49 94 (or 44 43),
FAX: (56-2) 688 38 21

Personal Data

Passport number 11.228.764-7
Birth Date
Santiago de Chile. 01/07/1968
Nationality
Chilean

Degrees

November 1998
Ph.D., Applied Mathematics, Ecole Polytechnique, Paris, France.
Research Area: Control of Partial Differential Equations.
Thesis: Quelques méthodes théoriques et numériques de contrôlabilité et problèmes d’intéractions fluide-structure.
Advisor: Professor Jean-Pierre Puel.
1994 — 1995
D.E.A., Analyse Numérique, Calcul Scientifique et Analyse non Linéaire. U. Pierre et Marie Curie-Paris VI and Ecole Polytechnique de Paris.
Mention: Très bien (17.53/20).
Rapport stage D.E.A.: Implémentation d’une méthode numérique pour un problème de contrôlabilité approchée sur une courbe intérieure, Ecole Polytechnique, Centre de Mathématiques Appliquées.
April 1994
Ingeniero Civil Matemático, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
Thesis: Análisis matemático y numérico de varios modelos espectrales de vibración sólida inducida por un fluido, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
1991
Licenciatura en Ciencias de la Ingeniería, Mención Ingeniería Matemática, Facultad de Ciencias Físicas y Matemáticas, U. de Chile.

Academic Positions

since November 2006
Full time Associated Profesor, Departamento de Ingeniería Matemática, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
since March 1999
Full time Assistant Profesor, Departamento de Ingeniería Matemática, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile.
since January 2000
Member, Center of Mathematical Modelling, UMR 2071 CNRS-Universidad de Chile.
may-july 2005
CNRS Associated Researcher Laboratoire Jacques Louis-Lions, U. Paris VI.

Awards

1985
Price Angel Faivovich decerned to the best graduate student, Scientific Area, Liceo José Miguel Carrera – Instituto Nacional.
1985
Best graduate student Liceo José Miguel Carrera – Instituto Nacional.

Fellowships

1998
Alpha Fellowship, Lambda Project of the European Union.
1994 – 1997
President of the Republic Grant, International Cooperation Agency (A.G.C.I.), MIDEPLAN, Government of Chile.
1993
Research Grant, Department of Mathematical Engineering, U. de Chile, decerned to best pregraduate students.
1986
Merit Grant, Escuela de Ingeniería, U. de Chile., free scholarship first year.

Courses Taught

since 1999
Engineering courses, Escuela de Ingeniería, Fac. de Cs. Fís. y Mat., U. de Chile.
  • Algebra (MA11A)
  • Calculus (MA12A). Global Coordinator Professor 2002-2003-march 2004
  • Calculus in Several Variables (MA22A)
  • Ordinary Differential Equations (MA26A)
since 1999
Mathematical Engineering courses Departamento de Ingeniería Matemática, Fac. de Cs. Fís. y Mat. U. de Chile.
  • Numerical Analysis in Partial Differential Equations (MA53L)
  • Optimal Control (MA57C)
since 2000
Ph. D. level Mathematical Modeling courses, Departamento de Ingeniería Matemática, Fac. de Cs. Fís. y Mat. U. de Chile.
  • Evolution Partial Differential Equations (MA691)
  • Inverse Problems and Control in Partial Differential Equations (MA691)
  • Evolution Mathematical Models (MA693)
  • Numerical Methods in Engineering Sciences (MA63A)
  • Variational Inverse Problems in Geophysics (MA691)
  • Control of Partial Differential Equations (MA696)
since 2000
Summer/Spring Schools
  • Mathematics I, Scolarship Summer School, Fac. de Cs. Fís. y Mat. U. de Chile, January since 2000 until 2007.
  • Numerical Analysis, MECESUP Doctoral Summer School, Fac. de Cs. Fís. y Mat. U. de Chile, December 2002. Organizer.
  • Inverse Problems, DIM/CMM Doctoral Spring School, Fac. de Cs. Fís. y Mat. U. de Chile, September-October 2006. Main organizer.

Graduate Students

October 2005–January 2007
Alberto Mercado, Controlabilidad y problemas inversos en ecuaciones parabólicas con transporte (Controllability and inverse problems in parabolic equations with transport), Ph. D. Thesis in Mathematical Modeling financed with MECESUP/CMM grants, Mathematical Engineering Department, U. de Chile. Director. Thesis in co-direction with J.-P. Puel at the Laboratoire des Mathématiques Apliquées, U. de Versailles Saint-Quentin, France partially supported by ECOS-CONICYT. Thesis defense, january 23th, 2007.
October 2001–April 2004
Galina García, Control y adaptividad en modelos de circulación oceánica (Adaptativity and control in oceanographic models), Ph. D. Thesis in Applied Mathema- tics supported by FONDAP-CONICYT grants, Mathematical Engineering Department, U. de Concepción, Concepción. Co-director in Santiago. Director in Concepción: Prof. Rodolfo Rodríguez. Thesis defense: April 1, 2004.
March 2005–December 2005
Karina Malla, Kalman Filter strategies for data assimilation and application to source estimation, Mathematical Engineering Thesis. Departamento de Ingeniería Matemática, Universidad de Concepción. co-Director with Jaime Ortega.
October 2003–September 2004
Eduardo Cerpa, Un modelo de interacción fluido-estructura y resolución de un problema inverso (A fluid-structure interaction model and resolution of an inverse problem), Mathematical Engineering Thesis, Mathematical Engineering Department, U. de Chile. Co-director. The student followed in September 2004 the Master Analyse Numérique, Analyse non Linéaire, U. Pierre et Marie Curie-Paris VI and now is a PhD student with Prof. J. M. Coron in Paris XI, Orsay.
April 2004–March 2005
Claudio Pizarro, Control asintótico de estructuras reforzadas (Asymptotic control of reinforced structures), Mathematical Engineering Thesis in coll. with M. Vanninathan, Mathematical Engineering Department, U. de Chile. Director, Thesis defense March 24, 2005.
Juin 2003–September 2004
Eduardo Contreras, Métodos matemáticos para la inversión del tiempo de viaje a partir de mediciones sísmicas en el Moho de Juan Fernández (Mathematical methods for travel time inversion from seismic measurements in the Juan Fernández Moho), joint research at the Center of Mathematical Modeling as Research CMM Student during and after its Master Thesis in Seismology, Geophysics Department, Fac. de Cs. Fís. y Mat., U. de Chile.
March 2004–December 2004
Eduardo Godoy, Estudio teórico y numérico del oleaje producido en Modelos del Convertidor Teniente debido a la inyección de aire por toberas (Theoretical and numerical study of waves produced in Teniente copper converter after air inyection), Master Thesis in Mechanical Engineering and Mathematical Engineering Thesis. Director in Department of Mechanical Engineering: A. Valencia. Co-director in Department of Mathematical Engineering.

Research Projects

See Projects Page

Conferences Attended

September 25 2008
Asimilación de datos y aplicaciones a ciencias atmosféricas. 1er Encuentro de Radio-Astronomía y Meteorología en Valparaíso. 
Invited talk, Valparaíso, Chile.
August 11-15 2008
Inverse Problems in PDE's. 3rd LNCC Meeting, invited talk, Petrópolis, Brazil.
June 2008
Variants of Carleman Inequalities applied to Inverse Problems. Nonlinear heat equation, Schrödinger equation, 
transmission problems. Control of Physical Systems and PDEs, Invited Speaker, Institut Henri Poincaré, Paris, France.
April 2008 Second SAEMC Workshop, Ubatuba, Brazil.
September 24-28 2007
Variants of global Carleman weights in one-measurement inverse problems and fluid-structure controllability problems, 
CEDYA 2007, Sevilla, España. Communication.
January 15–19 2007
Some global Carleman weights for inverse and controllability problems. Conference honoring Alberto Caldern. IMPA, Río de Janeiro, Brazil. Invited speaker.
August 2–5 2006
Tres problemas de identificación de parámetros en EDP’s de la geofísica, XVI Congreso COMCA 2006, U. de La Serena, La Serena, Chile.
March 21–24 2006
An inverse problem for the wave equation with one time-dependent partial boundary measurement, Seminar of Inverse Problems and Applications, in honor of the 1980 seminar of Alberto Caldern, LNCC, Río de Janeiro, Brazil. Invited speaker.
December 5–10 2005
Local stability for the inverse problem of recovering coefficients in the wave equation from partial boundary observations, ANCIF’05, International Workshop on Numerical Analysis and Control of Fluid-Structure Interactions, Chilln, Chile, December 5–10, 2005. Member of the Organization Committee,
http://ancif05.iecn.u-nancy.fr
August, 3–6 2005
Desigualdades de Carleman con pesos rotados y aplicación a un problema inverso para la ecuación de ondas, COMCA 2005, Antofagasta, Chile.
March, 29-31 2004
Control Optimo y Problemas Inversos, introductory course. UMESAM-IAI Workshop March 2003 held at CMM, Urban Mobile Emissions in South America Mega Cities: Bogotá, Buenos Aires, Lima, Rio de Janeiro, Santiago, Sao Paulo, research grant from the InterAmerican Institute for Global Change at the Center of Matematical Modeling. Member of the organizing committee. Available at www.cmm.uchile.cl/~umesam/activities_fir_tut-es.html.
January 13-16, 2004
Some controllability and inverse techniques in geophysics, First Chilean Workshop on Numerical Analysis of Partial Differential Equations, Concepción, Chile.
Juin 2003
Inegalités d’observabilité et contrôle insensibilisant d’un modèle océanographique quasi-géostrophique, Congrès National d’Analyse Numérique, Minisimposium: Point sur la coopération franco-chilienne, Montpellier, Languedoc, France.
September 2001
Rotated and multiple multipliers applied to the controllability in PDE, CEDYA, Salamanca, Spain.
September 2001
Sobre la controlabilidad nula del la EDP del calor semilineal con coeficientes de difusión discontinuos, CEDYA 2001, Salamanca, Spain, Co-author.
Juin 2000
Approximate controllability and homogenization of a semilinear elliptic problem. Non-Linear Analysis Conference 2000. Courant Institute, New York, U.S.A.
January 2000
Controllability and homogenization of a semilinear elliptic problem in an hypersurface. USA-Chile Workshop on Non-linear analysis. Viña del Mar, Chile.
May 1998
Approximate controllability of some linear models of fluid-structure interaction. Minisimposium. SIAM Conference on Control and its Applications, Jacksonville, U.S.A.

Seminar Presentations

May 2006
An inverse problem for the wave equation with one time-dependent partial boundary measurement, PDE and Inverse Problems Seminar, Department of Mathematics, University of Washington, Seattle, USA.
Juin 2005
Global Carleman inequalities for the wave equation with rotated multipliers. Application: recovering a coefficient in the wave equation from boundary measurements, Sminaire Ecole Centrale de Lyon, Lyon, France.
Juin 2005
Resolution of an inverse problem for the wave equation with rotated Carleman inequalities, Sminaire Institut Elie Cartan, U. Nancy, Nancy, France.
April 2005
Finite Rank Approximation based method for solving the Radiative Transfer Equation in Stellar Atmosphere Modelling, seminar at the European Southern Observatory (ESO) with Olivier Titaud, Vitacura, Santiago,
www.sc.eso.org/santiago/science/seminar2005.html.
Juin 2004
Problemas inversos y de control en transporte-difusión. Seminario de Fluidodinámica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile.
Juin 2004
Un problema inverso para la ecuación de ondas. Coloquio del Departamento de Ingeniería Matemática, U. de Concepción, Concepción, Chile.
May 2004
Aplicaciones del control exacto a cero en un modelo 2D de circulacion oceanica. Conferencia en el Coloquio de Matematicas Aplicadas del IIMA (Instituto de Investigaciones en matematicas Aplicadas y en Sistemas) de la Universidad Autonoma de Mexico, Ciudad Universitaria, Mexico D.F.
Juin 2002
Inegalités de Carleman pour l’équation sémilinéaire de la chaleur avec des coefficients discontinues, Laboratoire de Mathématiques Appliquées, Université de Versailles Saint-Quentin.
October 2001
Control de ondas bajo hipótesis geométricas, Conferencia Fundación Cámara, Universidad de Sevilla, Sevilla, Spain.
Juin 2001
Multipliers and controllability, Journée de Contrôle et Mathématiques Appliquées des Universités de la Lorraine, Metz, France.
December 2000
Desigualdades de Carleman, Coloquio del Departamento de Matemáticas de la Facultad de Ciencias de la U. de Chile.
November 2000
Controlabilidad exacta a cero de la ecuación del calor con coeficientes discontinuos, Encuentro CMM/Concepción, FONDAP de Modelamiento Matemático.
November 2000
Controlabilité approchée et continuation unique de quelques modèles d’interaction fluide-estructure, Séminaire U. de Metz, France.
October 2000
Un problème inverse elliptique sémilinéaire: controllabilité et homogéneisation, Séminaire du LCPC Laboratoire des Matériaux et des Structures du Génie Civil UMR CNRS.
September 1999
Controlabilidad aproximada de un sistema membrana-fluido cerca de ángulos rectos. Seminario Departamento de Matemáticas, Facultad de Ciencias, Universidad del Bío-bío. Concepción, Chile.
September 1999
Aspectos teóricos y numéricos del control de fluidos y fluido-estructura. Seminario Departamento de Ingeniería Matemática, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción. Concepción, Chile.
Juin 1999
Géometrie et contrôlabilité approchée de sistèmes fluide-structure. Séminaire Groupe de Recherche Fluide-Structure dirigé par Mme. Bernardi et Y. Maday. Laboratoire d’Analyse Numérique (actually Laboratoire Jacques-Louis Lions), Université Pierre et Marie Curie – Paris VI.
November 1998
Multiplicateurs et contrôle. Réunion de Recherche. Siège à Paris de Dassault Aviation. Groupe de Recherche sur le contrôle a future des avions en collaboration avec l’Ecole Polytechnique.
October 1998
Casos geométricos de controlabilidad aproximada de sistemas fluido-estructura. Seminar. Departamento de Matemática Aplicada de la Universidad Complutense de Madrid.
November 1997
Control of a linear model in solid-fluid interaction. Seminar. Institut für Mathematik, Karl-Franzens-Universität, Graz, Austria.
November 1997
Boundary Controllability of the Stationary Stokes System. Seminar. Institut für Mathematik, Karl-Franzens-Universität, Graz, Austria.
May 1997
Contrôlabilité frontière approchée du système de Stokes stationnaire observé sur une courbe intérieure. Congreso Nacional de Analisis Numérico, Ardèche, France.
August 1996
Controlabilité approchée du système de Stokes sur une courbe. Seminar. Centre de Matematiques Appliquées, Ecole Polytechnique, Paris, France.

Scientific Articles

See Publications Page