Simon M. Lenz
 Research Interests
Optimization:
Parameter Estimation Problems
Optimum Experimental Design
Simulation:
Delay Differential Equations
Differential Equations with Discontinuities and Nondifferentiabilities
Differential Algebraic Equations
Ordinary Differential Equations
Applications:
Systems Biology
Space Flight
Chemical Engineering
Posters and Talks at Conferences and Workshops
"Delay Effects in the Livescore of 'Unser Star für Baku'" (Talk),
Opening Ceremony of the Heidelberg Chapter of SIAM,
March 2012, Heidelberg, Germany
"Numerical Derivative Computation by Adjoint Methods
for Delay Differential Equations" (Talk),
International Congress on Industrial and Applied Mathematics (ICIAM),
July 2011, Vancouver, BC, Canada
"Derivative Computation and Parameter Estimation for DDE Models in Biology" (Poster),
Delay Differential Equations in Applications: Common Themes and Methods,
July 2011, Vancouver, BC, Canada
"Parameter Estimation with Derivative Based Methods
for Delay Differential Equations in Systems Biology" (Talk),
International Workshop on Differential and Integral Equations
with Applications in Biology and Medicine,
September 2010, Karlovassi, Samos, Greece
"Efficient Derivative Computation for Delay Differential Equations" (Talk),
International Workshop on State Dependent Delay Equations,
October 2009, Dresden, Germany
"Initial Satellite Orbit Determination with a Direct Multiple Shooting Method" (Talk),
4th International Conference on High Performance Scientific Computing,
March 2009, Hanoi, Vietnam
Publications / Thesis
"Multiple Shooting Method for Initial Satellite Orbit Determination",
S. M. Lenz, H. G. Bock, J.P. Schlöder, E.A. Kostina, G. Gienger, G. Ziegler
AIAA Journal on Guidance, Control and Dynamics, Volume 33, No. 5, Sep./Oct. 2010
"Solution of Parameter Estimation Problems with the
Direct Multiple Shooting Method in Discontinuous Models",
Diploma Thesis, University of Heidelberg, 2008
Teaching
Compact Course "Parameter Estimation and Optimum Experimental Design"
April 2012, Heidelberg
(Lecturer)
Compact Course "State-Space System Identification"
July 2010, Heidelberg
(Organizer and Lecturer)
Compact Course "Optimization with Differential Equations"
July 2009, Heidelberg
(Lecturer)
Student Mentoring
Jamin Hass,
"Automatische Regularisierung beim Gauß-Newton-Verfahren für Parameterschätzprobleme über eine Schätzung der Imkompatibilitätskonstanten Kappa"
Diploma Thesis, January 2012
Shashank Jaiswal,
"Local Minima in Parameter Estimation Problems for a Predator-Prey Model"
Software Practical, January 2012
Natalie Grassmuck,
"Detection of Discontinuities of Parameters with a Multiple Shooting Method for Adaptivity in Parameter Estimation"
Diploma Thesis, April 2011
Manuela Ernst,
Lösung von Anfangswertproblemen bei verzögerten Differentialgleichungen mit SolvIND
Bachelor Thesis, June 2011
Philipp Weidmann,
"Moving Horizon Estimation and Satellite Orbit Determination"
Diploma Thesis, January 2011
Jamin Hass,
"Satellite Orbit Determination with Nonsingular Kepler Elements"
Software Practical, March 2010
Jerko Horvat,
"Visualisierung von Satellitenbahnen"
Software Practical, November 2008
Short CV
Oct. 2002 - Sep. 2004: Studying Physics at the University of Dortmund
Sep. 2004: Vordiplom in Physics
Oct. 2004 - Mar. 2008: Studying Physics at the University of Heidelberg
Mar. 2008: Diplom in Physics
since Apr. 2008: working on PhD Thesis,
preliminary title: "Numerical Methods for
Sensitivity Analysis and Parameter Estimation
in Nonlinear Hybrid Delay Differential Equations
for Applications in Systems Biology"
since May 2008: Member of the Heidelberg Graduate School
of Mathematical and Computational Methods
for the Sciences (HGS MathComp)
Contact
Address
Dipl.-Phys. Simon M. Lenz
Interdisciplinary Center for Scientific Computing (IWR)
Im Neuenheimer Feld 368
D-69120 Heidelberg (Germany)
Room: 412
Phone
+49 6221 54 8897
E-Mail
simon.lenz@iwr.uni-heidelberg.de
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