Talks
- Perturbation analysis of hyperbolic PDAEs.
NUMDIFF-14, Halle,
September 09, 2015.
- Structural characterization of eigenvalue problems for network DAEs.
GAMM Workshop Applied and Numerical Linear Algebra 2015, Magdeburg,
July 09, 2015.
- Modeling and Numerical Analysis of PDAEs Describing Flow Networks.
VM60, Berlin,
May 07, 2015.
- Modeling and Simulation of Network DAEs with a Switching Control Function.
HPSC 2015, Hanoi, Vietnam, Hanoi, Vietnam,
March 16, 2015.
- Regularization of Electrical Circuits.
MATHMOD 2015, Vienna, Austria,
February 20, 2015.
- Jacobian Structure of Coupled Electromagnetic Field and Lumped Circuit Models.
SCEE 2014, Wuppertal,
July 22, 2014.
- Dynamic Coupled Electromagnetic Field Circuit Simulation.
ECMI, Taormina, Italy,
June 11, 2014.
- A topology based discretization of PDAEs describing water transportation networks.
GAMM Annual Meeting 2014, Erlangen,
March 13, 2014.
- Modeling and Numerical Analysis of Partial Differential Algebraic Systems for the
Simulation of Networks.
Elgersburg Workshop, Elgersburg,
March 06, 2014.
- Modeling and Simulation with Partial Differential Algebraic Equations.
BMS Days (Berlin Mathematical School, Berlin,
February 18, 2014.
- Solving Network DAEs with Python.
SciCADE 2013, Valladolid, Spain,
September 20, 2013.
- Gekoppelte Simulation und Optimierung für robustes virtuelles Fahrzeugdesign.
BMBF Statusseminar Mathematik für Innovationen in
Industrie und Dienstleistungen, Bonn,
June 21, 2013.
- DAE and PDAE Issues in Multiphysical Modeling and Simulation of Flow Networks.
SDIDE2013, Pamplona, Spain,
April 19, 2013.
- DAE and PDAE Issues in Multiphysical Modeling and Simulation of Flow Networks.
Deskriptor Workshop 2013, Geseke,
March 05, 2013.
- Beschleunigte Offline-Simulation für die Optimierung der Pumpensteuerung
von Wassernetzwerken.
ONSOPT Meeting, BWV Stuttgart,
January 15, 2013.
- Some News about (P)DAEs.
GS60, Lund University, Sweden,
December 14, 2012.
- Modeling, Analysis and Simulation of Networks.
TU München,
November 26, 2012.
- Mathematische Modellierung und Simulation - ein Motor für künftige Entwicklungen?
DIB Tagung 2012 , Berlin,
November 17, 2012.
- Modeling Issues for Robust Multiphysical Numerical Simulation of Flow Networks.
Challenge Workshop MSO Tools, TU Berlin,
September 25, 2012.
- Multiphysical Modeling and Numerical Simulation of Flow Networks.
NUMDIFF 2012, Halle,
September 11, 2012.
- Numerische Simulation des Herz-Kreislauf-Systems.
Bayer Technology Services, Leverkusen,
July 12, 2012.
- Modeling, Analysis and Simulation of Flow Networks.
Matheon Scientific Advisory Board Meeting, Berlin,
May 10, 2012.
- Numerische Simulation des Herz-Kreislauf-Systems.
Workshop zur Modellierung und Analysis kardiologischer Prozesse, Köln,
February 12-13, 2012.
- Numerical Stability Problems for DAEs Caused by Differentiation.
AD Workshop, Berlin,
December 7-9, 2011.
- DAE index calculation and consistent initialization of multiphysical network models.
DMV Tagung, Köln,
September 19-22, 2011.
- DAE index calculation and consistent initialization of multiphysical network models.
Applied Mathematics, Modeling and Computational Science conference (AMMCS), Waterloo, Canada,
July 25-29, 2011.
- Multiphysikalische Modellierung und numerische Simulation von Netzwerken.
Heinrich-Heine-Universität Düsseldorf,
June 24, 2011.
- Multiphysikalische Modellierung und numerische Simulation von Netzwerken.
Ruprecht-Karls-Universität Heidelberg,
Germany, January 24, 2011.
- Multiphysikalische Modellierung und numerische Simulation von Netzwerken.
Humboldt-Universität zu Berlin,
Germany, December 6, 2010.
- Multiphysikalische Modellierung und numerische Simulation von Netzwerken.
Universität Bonn,
Germany, December 3, 2010.
- Multiphysikalische Modellierung und numerische Simulation von Netzwerken.
TU Hamburg-Harburg,
Germany, December 2, 2010.
- Structural characterization of circuit configurations with undamped oscillations.
16-th European Conference on Mathematics for Industry (ECMI),
University of Wuppertal,
Germany, July 27, 2010.
- Solution Approaches for Abstract Differential-Algebraic Equations.
University of Bielefeld,
Germany, July 5, 2010.
- Bachelor- und Masterstudiengänge Mathematik und Wirtschaftsmathematik.
Uni Info Day
at the University of Cologne,
Germany, June 19, 2010.
- Numerische Simulation.
Girlsday Mathematik/Informatik
at the University of Cologne,
Germany, June 17, 2010.
- BDF Solver for DAEs in Python.
Workshop DAE/PDAE Simulation with Python,
Daun, Germany, May 28, 2010.
- Accelerating Simulations of Dynamical Processes.
Deutscher Wetterdienst,
Offenbach, Germany, February 03, 2010.
- Numerical Simulation.
Mathecamp 2009 for the winners of the
Math Tournaments 2009 at the University of Cologne and the
Radboud University in Nimwegen,
Duisburg, Germany, December 12, 2009.
- Beschleunigung der Simulation dynamischer Prozesse für
Tests mit vielen Parameterwerten.
IZBI, Interdisziplinäres Zentrum
für Bioinformatik,
Leipzig, Germany, November 16, 2009.
- Praxisbericht über das EU-Projekt ICESTARS.
Das ABC der Antragstellung -
Verbundforschung im 7. EU-Forschungsrahmenprogramm,
EU-Büro des BMBF,
Bonn, Germany, September 28, 2009.
- Similarities in Circuit and Multibody Systems Modeling.
ICNAAM 2009, International Conference of
Numerical Analysis and Applied Mathematics,
Crete, Greece, September 18-22, 2009.
- Stability Issues for Transient Simulations
for Electronic Circuit Design.
Forschungszentrum Jülich,
Germany, April 22, 2009.
- Stability Questions for Differential-Algebraic Equations.
ETH Zürich,
Switzerland, April 08, 2009.
- Stability Issues for DAEs and Modelling Issues in Circuit Simulation.
Universidad Politecnica de Madrid,
Madrid, Spain, February 16, 2009.
- Stabilität differential-algebraischer Gleichungen.
TU Kaiserslautern,
Germany, February 12, 2009.
- MECS: Multiphysical Electric Circuit Simulator.
Institut für Mikroelektronik,
TU Vienna,
Austria, December 3, 2008.
- Stability of differential-algebraic systems.
Mathematikcentrum,
Lund University,
Sweden, November 26, 2008.
- Numerical simulation in chemical reaction kinetics.
Bayer Technology Services,
Leverkusen, Germany, October 13, 2008.
- Hybrid Analysis of Nonlinear Time-Varying Circuits Providing
DAEs with at Most Index One.
The 7th International Conference on
Scientific Computing in
Electrical Engineering (SCEE),
Espoo, Finland, September 28 - October 3, 2008.
- Stability Issues for DAEs in Circuit Simulation.
SDIDE08, 3rd International Workshop on
Stability and
Discretization Issues in Differential Equations,
TU Vienna, Austria, September 17-20, 2008.
- Mathematik in der Nanowelt.
Ringvorlesung im Jahr der Mathematik
an der Universität zu Köln,
Germany, July 15, 2008.
- Kodierung von Daten in unserem Alltag.
24-Stunden-Bildung,
Universität zu Köln,
Germany, June 20, 2008.
- Wie werden sensible Daten verschlüsselt?
Girlsday Mathematik/Informatik
an der Universität zu Köln,
Germany, May 30, 2008.
- Anwendungsprobleme aus dem Chip-Design.
Humboldt-Universität
zu Berlin,
Germany, February 18, 2008.
- Stabilität differential-algebraischer Systeme.
Elgersburger Arbeitstagung,
Elgersburg, Germany, February 11-14, 2008.
- Numerische Simulation, von Eulers Idee bis zu Schlüsselfragen
in Hochtechnologien.
Antrittsvorlesung an der Universität
zu Köln, December 7, 2007.
- Numerische Simulation im Chip-Design.
Eröffnung der Außenstelle des
Fraunhofer-Instituts SCAI an der Universität
zu Köln,
Germany, September 7, 2007.
- Stability issues of numerical methods for DAEs.
SciCADE07, International Conference
on SCIentific
Computation And Differential Equations,
Saint-Malo, France, July 9-13, 2007.
- Numerical Simulation in Chip Design.
TU Eindhoven,
The Netherlands, February 14, 2007.
- Stabilizing multistep methods for circuit simulation by
beta-blocking.
NXP Semiconductors,
Eindhoven, The Netherlands, February 13, 2007.
- Numerical Simulation in Chip Design.
Fraunhofer Institut SCAI,
Sankt Augustin, December 18, 2006.
- Numerische Simulation von Hochfrequenz-Schaltungen
der Kommunikationstechnik.
BMBF-Statusseminar, Mathematik für
Innovationen in Industrie und Dienstleistungen,
FZ Jülich, Germany, December 13-14, 2006.
- Erfahrungen aus dem Berliner ProFiL-Programm.
Wissenschaftsrat,
Exzellenz in Wissenschaft und Forschung. Neue Wege in der Gleichstellungspolitik,
Köln, Germany, November 28-29, 2006.
- A Galerkin Method for PDAEs.
SCEE 2006, The 6th International
Conference on Scientific Computing in Electrical
Engineering,
Sinaia, Romania, September 17-22, 2006.
- Abstract Differential-Algebraic Equations.
Seminar NUMDIFF-11, Numerical Solution
of Differential and
Differential-Algebraic Equations,
Halle, Germany, September 4-8, 2006.
- Numerical Solution of PDAEs from Coupled Circuit and Device
Simulation.
Universität Hamburg,
Germany, July 6, 2006.
- Numerical simulation of PDAEs in Chip Design.
GAMM-Workshop on DAEs,
Universität zu Köln, Germany, May 19-20, 2006.
- Wer braucht denn heute Mathematik?
Girlsday Mathematik/Informatik
an der Universität zu Köln,
Germany, April 26, 2006.
- Abstract Differential-Algebraic Equations.
Oberwolfach Conference
Differential-Algebraic Equations,
Oberwolfach, Germany, April 16-22, 2006.
- Numerical Solution of PDAEs from Coupled Circuit and Device
Simulation.
SEMIC 2006, Recent Advances in Modeling
and Simulation
of Semiconductor Devices and Circuits,
TU Vienna, Austria, February 16-17, 2006.
- Numerical Solution of PDAEs from Coupled Circuit and Device
Simulation.
TU Kaiserslautern,
Germany, July 15, 2005.
- A Deeper Insight into the Structure of Differential-Algebraic
Systems.
SciCADE05, International Conference on
Scientific Computation And Differential Equations,
Nagoya, Japan, May 23-27, 2005.
- Numerical Solution of PDAEs from Coupled Circuit and Device
Simulation.
SciCADE05, International Conference on
Scientific Computation And Differential Equations,
Nagoya, Japan, May 23-27, 2005.
- Gekoppelte Schaltungs- und Device-Simulation.
TU München,
Germany, February 21, 2005.
- Gekoppelte Schaltungs- und Device-Simulation.
Fakultätskolloquium,
Fakultät II, TU Berlin,
Germany, February 10, 2005.
- Stability preserving integration of DAEs.
Universität Bielefeld,
Germany, February 2, 2005.
- Gekoppelte Schaltungs- und Device-Simulation
Fraunhofer Institut SCAI,
Sankt Augustin, December 20, 2004.
- Numerische Simulation von Hochfrequenzschaltungen.
Bergische Universität
Wuppertal,
Germany, November 24, 2004.
- Wer braucht schon Mathematik?
Colloquium honoring Reinhard Bölling
on the occasion of his 60th birthday,
FU Berlin, Germany, November 12, 2004.
- Gekoppelte Schaltungs- und Device-Simulation.
Institut für Theoretische Physik,
TU Berlin,
Germany, November 4, 2004.
- Gekoppelte Schaltungs- und Device-Simulation.
Mathematisches Institut, Universität
zu Köln,
Germany, October 27, 2004.
- Asymptotic stability of DAEs in circuit simulation.
2nd Workshop on Stability of initial value
ODEs, DAEs, PDAEs and their discretizations,
Berlin, Germany, October 8-12, 2004.
- Numerical Analysis of Coupled Circuit and Device Models.
SCEE 2004, Scientific Computing in
Electrical Engineering
,
Capo D'Orlando, Italy, September 5-9, 2004.
- Gekoppelte Schaltungs- und Device-Simulation.
TU Dresden,
Germany, June 16, 2004.
- Numerical Analysis of Coupled Circuit and Device Models.
Workshop Advances in Math.
Semiconductor Modelling:
Devices and Circuits, Peking, China, March 2-6,
2004.
- General linear methods for nonlinear index-1 DAEs.
University of Auckland,
New Zealand, February 12, 2004.
- Numerische Simulation neuer Chip-Generationen.
Campuswoche Adlershof, Humboldt-Universität zu
Berlin,
Germany, December 4, 2003.
- Analysis und Numerik partieller differential-algebraischer
Systeme gekoppelter Schaltungs- und Device-Simulation.
TU Braunschweig,
Germany, November 24, 2003.
- Wo steckt die Mathematik im Mikro-Chip?
Urania Berlin,
Germany, November 18, 2003.
- PDAEs as Abstract Differential Algebraic Systems.
ANODE, Auckland Numerical Ordinary
Differential Equations,
Auckland, New Zealand, July 14-18, 2003.
- Numerical Analysis of Coupled Circuit and Device Models.
SciCADE03, International Conference
on Scientific Computation And Differential Equations,
Trondheim, Norway,
June 30 - July 4, 2003.
- Numerical Analysis of Coupled Circuit and Device Models.
MACSI-NET Workshop Model reduction in
electromagnetics. Coupling of field models and circuits,
ETH Zürich, Switzerland, May 2-3, 2003.
- Stability Preserving Integration of DAEs.
GAMM-Jahrestagung, Gesellschaft für
Angewandte Mathematik und Mechanik,
Abanao Terme, Padua, Italy, March 24-28, 2003.
- PDAEs als abstrakte differential-algebraische Systeme.
TU Berlin,
Germany, June 13, 2002.
- Numerische Analysis von Systemen der gekoppelten Netzwerk- und
Bauelementsimulation.
Oberseminar Elektrophysik und
physikalische Elektronik,
TU Munich, Germany, April 29, 2002.
- Der Weg zu strukturellen Analysen in der Schaltungssimulation.
Infineon Technologies,
München, Germany, March 4, 2002.
- Schaltungssimulation unter Einbeziehung erweiterter
Halbleitermodelle.
BMBF Seminar Numerische Simulation
elektrischer Schaltungen im Zeitbereich,
Karlsruhe, Germany, February 14-15 2002.
- PDAEs als abstrakte differential-algebraische Systeme.
Institut für Numerische Mathematik,
Universität Halle,
Germany, December 11, 2001.
- Index Concept for Circuit Systems Coupled with Semiconductor
Model Equations
Oberwolfach Conference Modeling,
Simulation and Optimization of Integrated Circuits,
Oberwolfach, Germany, November 25 - December 1, 2001.
- Numerically well formulated index-1 and index-2 DAEs.
Seminar Numerical Analysis, Lund
University,
Sweden, October 8, 2001.
- Structure and Index for DAEs and PDAEs in Circuit Simulation.
SIAM-EMS Conference Applied Mathematics
in our Changing World,
Berlin, Germany, September 2-6, 2001.
- Numerically well formulated index-1 and index-2 DAEs.
SciCADE 01, International Conference on
Scientific Computation And Differential Equations,
Vancouver, Canada, July 29 - August 3, 2001.
- DAE Structure and Index in Dependence on MOSFET Modelling
in Circuit Simulation.
Infineon Technologies,
München,
Germany, June 28, 2001.
- Structural Analysis of DAEs in Circuit Simulation And
Consequences For Their Numerical Integration.
Meeting of the
Numerical Mathematics Working Party, Philips Research
Laboratories,
Eindhoven, The Netherlands, April 4, 2001.
- Structural Analysis of DAEs in Circuit Simulation And
Consequences For Their Numerical Integration.
Colloqium Scientific
Computing, TU Eindhoven,
The Netherlands, April 3, 2001.
- Stabilization of Multistep Methods for Electrical Networks
by beta blocking.
GAMM-Jahrestagung, Gesellschaft für
Angewandte Mathematik und Mechanik,
ETH Zürich, Switzerland, February 12-15, 2001.
- DAE Structure and Index in Dependence on MOSFET Modelling
in Circuit Simulation.
Seminar NUMDIFF-9, Numerical
Solution of Differential and Differential-Algebraic
Equations,
Halle, Germany, September 4-8, 2000.
- Benefits of Special Structures of DAEs for the Time Domain
Analysis of Integrated Circuits and Consequences for the Model
Design.
SCEE-2000, Scientific Computing
in Electrical Engineering,
Warnemünde, Germany, August 20-23, 2000.
- Nutzbare Strukturen von Algebro-Differentialgleichungen
in der Schaltungssimulation.
Oberseminar Numerische Mathematik /
Scientific Computing, FU Berlin,
Germany, June 16, 2000.
- Mathematical problems in Circuit Simulation.
3rd International IMCAS Symposium on
Mathematical Modelling,
TU Vienna, Austria, February 1-4, 2000.
- Numerische Simulation integrierter Schaltungen.
Kolloquium zum
150. Geburtstag von Sofia Kovalevskaja,
Humboldt Universität zu Berlin, Germany, January 15,
2000.
- Asymptotic Stability in Circuit Simulation.
Workshop on
Stability of Initial Value ODEs, DAEs and Their
Discretizations,
Frostavallen, Sweden, October 11-15, 1999.
- Structural analysis of DAEs in circuit simulation and
consequences for their numerical integration.
ANODE99, Auckland Numerical Ordinary
Differential Equations),
Auckland, New Zealand, August 16-20, 1999.
- Asymptotic Properties of DAEs in Circuit Simulation.
SciCADE 99, International Conference on
SCIentific Computation And Differential Equations,
Fraser Island, Australia, August 9-13, 1999.
- Asymptotic properties of DAEs in circuit simulation.
ICIAM99, Fourth International Congress on
Industrial and Applied Mathematics,
Edinburgh, Scotland, July 5-9, 1999.
- Structural analysis of DAE systems in circuit simulation.
Seminar Numerical Analysis, Lund
University,
Sweden, May 5, 1999.
- Asymptotik von DAEs in der Schaltungssimulation.
4th Workshop über Deskriptor
Systeme,
Paderborn, Germany, July 13-17, 1998.
- Asymptotics of DAEs in circuit simulation.
ECMI 98, 10th Conference of the European
Consortium for Mathematics in Industry,
Göteborg, Sweden, July 22-27, 1998.
- Asymptotics of DAEs in circuit simulation.
GAMM-Jahrestagung, Gesellschaft für
Angewandte Mathematik und Mechanik,
Bremen, Germany, April 6-9, 1998.
- Error control for the BDF method applied to DAEs.
Seminar Numerical Analysis, Lund
University,
Sweden, October 1, 1997.
- Topologische Index-Berechnung von DAEs in der
Schaltungssimulation.
Workshop Scientific Comuting in
Electrical Engineering,
TH Darmstadt, Germany, June 18-20, 1997.
- Bestimmung des DAE-Index von Schaltungen auf der Grundlage der
Netzwerktopologie.
Siemens, Zentrale Forschung und
Entwicklung,
München, Germany, June 3, 1997.
- Topological index-calculation of DAEs in circuit simulation.
GAMM-Jahrestagung, Gesellschaft für
Angewandte Mathematik und Mechanik,
Regensburg, Germany, March 24-27, 1997.
- Graphentheoretische Kriterien zur Bestimmung des DAE-Index
elektrischer Netzwerke.
Institut für Grundlagen der
Elektrotechnik und
Elektronik, TU Dresden,
Germany, March 7, 1997.
- Lösung von Index-2 Algebro-Differentialgleichungen und deren
Anwendung in der Schaltkreissimulation.
IWR, Interdisziplinäres Zentrum für
Wissenschaftliches Rechnen,
Heidelberg, Germany, July 26, 1996.
- Lösung von Index-2 Algebro-Differentialgleichungen und deren
Anwendung in der Schaltkreissimulation.
Siemens, Zentrale
Forschung und Entwicklung,
München, Germany, April 11, 1996.
- Solving index 2 differential-algebraic equations in circuit
simulation.
3. Workshop über Deskriptor
Systeme,
Paderborn, Germany, March 18-22, 1996.
- Solving index 2 differential-algebraic equations in circuit
simulation.
Oberwofach Conference Differential--Algebraic
Equations, Related Fields of Theory and Applications,
Oberwolfach, Germany, October 29 - November 4, 1995.
- Struktur und Index mathematischer Modelle in der
Schaltkreissimulation.
ITG-Tagung New Applications of
Theoretical Concepts in Electrical Engineering,
Berlin, Germany, April 13-14, 1995.
- Recent results in solving general index 2 differential-algebraic
equations.
SciCADE 95, International Conference
on Scientific
Computation and Differential Equations,
Stanford, USA, March 28 - April 1, 1995.
- Die BDF für nichtlineare Index-2 Algebro-Differentialgleichungen.
Siemens, Zentrale
Forschung und Entwicklung, München,
October 28, 1994.
- Die BDF für nichtlineare Index-2 Algebro-Differentialgleichungen.
IBM,
Heidelberg, Germany, October 1994.
- The BDF Method Applied to Index-2 DAE's.
Seminar NUMDIFF 7, Numerical Solution of
Differential and Differential-Algebraic Equations,
Halle, Germany, September 19-23, 1994.
- Feasibility and Stability Behaviour of the BDF Applied to
Index-2 DAE's.
IMACS World Congress on Computational and
Applied Mathematics,
Atlanta, USA, July 11-15, 1994.
- Die BDF für nichtlineare Algebro-Differentialgleichungen
vom Index 2.
Studentenkonferenz Mathematik,
Berlin, Germany, October 9-10, 1993.
- Feasibility and stability behaviour of the BDF applied to nonlinear
index-2 DAEs.
Computer Science Dept.,
University of Minnesota, Minneapolis, USA,
November 1993.
- On stability of solutions of quasilinear index-2-tractable
differential-algebraic equations.
ISIRS'91, Second
International Symposium on Implicit and Robust Systems,
Warsaw, Poland, July 17-19, 1991.
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