Berichte aus der Technomathematik

For hardcopies, please contact the secretary A. Duerkop: duerkop@math.uni-bremen.de.
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• Reports 2008
• Reports 2007
• Reports 2006
• Reports 2005
• Reports 2004
• Reports 2003
• Reports 2002
• Reports 2001
• Reports 2000
• Reports 1999
• Reports 1998

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Reports 2008

08-04 Jonathan Montalvo-Urquizo, Alfred Schmidt

Mathematical Optimization of Simulated Laser Welds Mathematical Optimization of Simulated Laser Welds on Aluminum Alloys, November 2008.

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08-03 Jonathan Montalvo-Urquizo, Zafer Akbay, Alfred Schmidt, Thomas Pretorius:

Adaptive Finite Element Models Applied to the Laser Welding Problem, Oktober 2008.

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08-02 Christof Büskens, Patrik Kalmbach, Tim Nikolayzik, Dennis Wassel:

Solver Development Strategy, März 2008.

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08-01 Dennis Wassel, Tim Nikolayzik, Christof Büskens:

Interface Control Document, März 2008.

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Reports 2007

07-06 Daniel Wilczek, Angelika Bunse-Gerstner, Dorota Kubalinska, Georg Vossen:

Equivalences between necessary optimality conditions for h_2-norm optimal model reduction, Oktober 2007.

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07-05 Georg Vossen, Angelika Bunse-Gerstner, Dorota Kubalinska, Daniel Wilczek:

Necessary optimality conditions for h_2-norm optimal model reduction, Oktober 2007.

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07-04 Angelika Bunse-Gerstner, Dorota Kubalinska, Georg Vossen, Daniel Wilczek:

h_2-norm optimal model reduction for large-scale discrete dynamical MIMO systems, August 2007.

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07-03 Michael Wolff, Sören Boettcher, Michael Böhm, Inga Loresch:

Vergleichende Bewertung von makroskopischen Modellen für die austenitisch-perlitische Phasenumwandlung im Stahl 100Cr6, Juli 2007.

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07-02 Michael Wolff, Sören Boettcher, Michael Böhm:

Phase transformations in steel in the multi-phase case - general modelling and parameter identification, Juni 2007.

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07-01 Michael Wolff, Friedhelm Frerichs, Natalja Lysenko:

Bewerten von Modellen der Martensitbildung bei nichtmonotoner Abkühlung für den Stahl 100Cr6, Februar 2007.

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Reports 2006

06-01 Christoph Büskens, Peter Lasch:

Suboptimal Improvement of the classical Riccati Controller, März 2006.

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06-02 Michael Wolff, Michael Böhm:

Transformation-induced plasticity in steel - general modelling, analysis and parameter identification, April 2006.

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06-03 Adrian Muntean, Michael Böhm:

A sharp-interface moving-boundary system modeling carbonation penetration in concrete, April 2006.

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06-04 Michael Wolff, Michael Böhm, Sebastian Meier:

Modellierung der Wechselwirkung von Kohlenstoff-Diffusion und ferritischen Phasenumwandlungen für einen untereutektoiden unlegierten Stahl, Mai 2006.

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06-05 Adrian Muntean:

Error bounds on a semi-discrete finite element approximation of the weak solution to a one phase moving-boundary system describing concrete carbonation, Mai 2006.

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06-06 Sergey Dashkovskiy, Björn S. Rüffer, Fabian R. Wirth :

Construction of ISS Lyapunov functions for networks, Juli 2006.

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06-07 Adrian Muntean and Michael Böhm:

Length scales in the concrete carbonation process and water barrier effect: a matched asymptotics approach, September 2006.

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06-08 Werner Wosniok, Hakan Aycil, Jens-J. Lau, Ronald Stöver:

Mathematische Modelle zur Realisierung repräsentativer Bauschuttprobennahmen und ihre Überprüfung in der Praxis, Dezember 2006.

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Reports 2005

05-01 Alfred Schmidt, Adrian Muntean, Michael Böhm:

Numerical Experiments with Self-Adaptive Finite Element Simulations in 2D for the Carbonation of Concrete, April 2005.

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05-02 Sebastian A. Meier, Malte A. Peter, Adrian Muntean, Michael Böhm:

Modelling and simulation of concrete carbonation with internal layers, April 2005.

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05-03 Malte A. Peter, Adrian Muntean,Sebastian A. Meier, Michael Böhm:

Modelling and simulation of concrete carbonation: competition of several carbonation reactions, April 2005.

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05-04 Adrian Muntean,Sebastian A. Meier, Malte A. Peter, Michael Böhm, Jörg Kropp:

A note on limitations of the use of accelerated concrete-carbonation tests for service-life predictions, April 2005.

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05-05 Sergey Dashkovskiy, Björn S. Rüffer, Fabian R. Wirth:

An ISS Small-Gain Theorem for General Networks, June 2005.

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Reports 2004

04-01 Liliana Cruz Martin, Gerd Teschke:

A new method to reconstruct radar reflectivities and Doppler information, January 2004.

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04-02 Ingrid Daubechies, Gerd Teschke:

Wavelet based image decomposition by variational functionals, January 2004.

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04-03 N. Guglielmi, F. Wirth, M. Zennaro:

Complex polytope extremality results for families of matrices, March 2004.

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04-04 I. Daubechies, G. Teschke:

Variational image restoration by means of wavelets: simultaneous decomposition, deblurring and denoising April 2004.

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04-05 V.L. Kharitonov, E. Plischke:

Lyapunov matrices for time-delay systems, April 2004.

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04-06 Ronny Ramlau:

On the use of fixed point iterations for the regularization of nonlinear ill-posed problems, June 2004.

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04-07 Christof Büskens, Matthias Knauer:

Higher Order Real-Time Approximations In Optimal Control of Multibody-Systems For Industrial Robots, August 2004.

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04-08 Christof Büskens, Roland Griesse:

Computational Parametric Sensitivity Analysis of Pertubed PDE Optimal Control Problems with State and Control Constraints, August 2004.

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04-09 Christof Büskens:

Higher Order Real-Time Approximations of Pertubed Control Constrainted PDE Optimal Control Problems, August 2004.

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04-10 Christof Büskens, Matthias Gerdts:

Differentiability of Consistency Functions, August 2004.

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04-11 Robert Baier, Christof Büskens, Ilyes Aissa, Matthias Gerdts:

Approximation of Reachable Sets by Direct Solution Methods of Optimal Control Problems, August 2004.

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04-12 Joana Soares, Gerd Teschke, Mariya Zhariy:

A Wavelet Regularization for Nonlinear Diffusion Equations, September 2004.

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Reports 2003

03-01 Michael Wolff, Michael Böhm, Seguei Dachkovski:

Volumenanteile versus Massenanteile - der Dilatometerversuch aus der Sicht der Kontinuumsmechanik, January 2003.

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03-02 Daniel Kessler, Ricardo H. Nochetto, Alfred Schmidt:

A posteriori error control for the Allen-Cahn Problem: circumventing Gronwall's inequality, March 2003.

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03-03 Michael Böhm, Jörg Kropp, Adrian Muntean:

On a Prediction Model for Concrete Carbonation based on Moving Interfaces - Interface concentrated Reactions, April 2003.

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03-04 Michael Böhm, Jörg Kropp, Adrian Muntean:

A Two-Reaction-Zones Moving-Interface Model for Predicting Ca(OH)_2-Carbonation in Concrete, April 2003.

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03-05 Vladimir L. Kharitonov, Diederich Hinrichsen:

Exponential estimates for time delay systems, May 2003.

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03-06 Michael Wolff, Michael Böhm, Serguei Dachkovski, Günther Löwisch:

Zur makroskopischen Modellierung von spannungsabhängigem Umwandlungsverhalten und Umwandlungsplastizität bei Stählen und ihrer experimentellen Untersuchung in einfachen Versuchen, July 2003.

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03-07 Serguei Dachkovski, Michael Böhm, Alfred Schmidt, Michael Wolff:

Comparison of several kinetic equations for pearlite transformation in100Cr6 steel, July 2003.

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03-08 Volker Dicken, Peter Maass, Ingo Menz, Jenny Niebsch, Ronny Ramlau:

Nonlinear Inverse Unbalance Reconstruction in Rotor dynamics, July 2003.

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03-09 Michael Böhm, Serguei Dachkovski , Martin Hunkel, Thomas Lübben, Michael Wolff:

Übersicht über einige makroskopische Modelle für Phasenumwandlungen im Stahl, August 2003.

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03-10 Michael Wolff, Friedhelm Frerichs, Bettina Suhr:

Vorstudie für einen Bauteilversuch zur Umwandlungsplastizität bei der perlitischen Umwandlung des Stahls 100Cr6, August 2003.

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03-11 Michael Wolff, Bettina Suhr:

Zum Vergleich von Massen- und Volumenanteilen bei der perlitischen Umwandlung der Stähle 100Cr6 und C80, September 2003.

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03-12 Rike Grotmaack, Adrian Muntean:

Stabilitätsanalyse eines Moving-Boundary-Modells der beschleunigten Karbonatisierung von Portlandzementen, September 2003.

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03-13 Alfred Schmidt, Michael Wolff, Michael Böhm:

Numerische Untersuchungen für ein Modell des Materialverhaltens mit Umwandlungsplastizität und Phasenumwandlungen beim Stahl 100Cr6 (Teil 1), September 2003.

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Reports 2002

02-01 Michael Wolff, Michael Böhm:

Zur Modellierung der Thermoelasto-Plastizität mit Phasenumwandlungen bei Stählen sowie der Umwandlungsplastizität, February 2002.

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02-02 Stephan Dahlke, Peter Maaß:

An Outline of Adaptive Wavelet Galerkin Methods for Tikhonov Regularization of Inverse Parabolic Problems, April 2002.

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02-03 Alfred Schmidt:

A Multi-Mesh Finite Element Method for Phase Field Simulations, April 2002.

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Reports 2001

01-01 Torsten Köhler, Peter Maass, Peter Wust, Martin Seebass:

Efficient methods in hyperthermia treatment planning, January 2001.

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01-02 Peter Benner, Ralph Byers, Rafael Mayo, Enrique S. Quintana-Ortí, Vicente Hernández:

Parallel Algorithms for LQ Optimal Control of Discrete-Time Periodic Linear Systems, February 2001.

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01-03 Peter Benner, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí:

Efficient Numerical Algorithms for Balanced Stochastic Truncation, March 2001.

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01-04 Peter Benner, Maribel Castillo, Enrique S. Quintana-Ortí:

Partial Stabilization of Large-Scale Discrete-Time Linear Control Systems, March 2001

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01-05 Stephan Dahlke:

Besov Regularity for Edge Singularities in Polyhedral Domains, May 2001.

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01-06 Fabian Wirth:

A linearization principle for robustness with respect to time-varying pertubations, May 2001.

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01-07 Stephan Dahlke, Wolfgang Dahmen, Karsten Urban:

Adaptive Wavelet Methods for Saddle Point Problems - Optimal Convergence Rates, July 2001.

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01-08 Ronny Ramlau:

Morozov's Discrepancy Principle for Tikhonov regularization of nonlinear operators, July 2001.

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01-09 Michael Wolff:

Einführung des Drucks für die instationären Stokes-Gleichungen mittels der Methode von Kaplan, July 2001.

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01-10 Stephan Dahlke, Peter Maaß, Gerd Teschke:

Reconstruction of Reflectivity Desities by Wavelet Transforms, August 2001.

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Reports 2000

00-01 Peter Benner, Volker Mehrmann, Hongguo Xu:

Perturbation Analysis for the Eigenvalue Problem of a Formal Product of Matrices, January 2000.

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00-02 Ziping Huang:

Finite Element Method for Mixed Problems with Penalty, January 2000.

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00-03 Gianfrancesco Martinico:

Recursive mesh refinement in 3D, February 2000.

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00-04 Eberhard Bänsch, Christoph Egbers, Oliver Meincke, Nicoleta Scurtu:

Taylor-Couette System with Asymmetric Boundary Conditions, February 2000.

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00-05 Peter Benner:

Symplectic Balancing of Hamiltonian Matrices, February 2000.

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00-06 Fabio Camilli, Lars Grüne, Fabian Wirth:

A regularization of Zubov's equation for robust domains of attraction, March 2000.

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00-07 Michael Wolff, Eberhard Bänsch, Michael Böhm, Dominic Davis:

Modellierung der Abkühlung von Stahlbrammen, March 2000.

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00-08 Stephan Dahlke, Peter Maaß, Gerd Teschke:

Interpolating Scaling Functions with Duals, April 2000.

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00-09 Jochen Behrens, Fabian Wirth:

A globalization procedure for locally stabilizing controllers, May 2000.

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00-10 Peter Maaß, Gerd Teschke, Werner Willmann, Günter Wollmann:

Detection and Classification of Material Attributes -- A Practical Applicaion of Wavelet Analysis, May 2000.

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00-11 Stefan Boschert, Alfred Schmidt, Kunibert G. Siebert, Eberhard Bänsch, Klaus-Werner Benz, Gerhard Dziuk, Thomas Kaiser:

Simulation of Industrial Crystal Growth by the Vertical Bridgman Method, May 2000.

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00-12 Volker Lehmann, Gerd Teschke:

Wavelet Based Methods for Improved Wind Profiler Signal Processing, May 2000.

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00-13 Stephan Dahlke, Peter Maass:

A Note on Interpolating Scaling Functions, August 2000.

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00-14 Ronny Ramlau, Rolf Clackdoyle, Frédéric Noo, Girish Bal:

Accurate Attenuation Correction in SPECT Imaging using Optimization of Bilinear Functions and Assuming an Unknown Spatially-Varying Attenuation Distribution, September 2000.

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00-15 Peter Kunkel, Ronald Stöver:

Symmetric collocation methods for linear differential-algebraic boundary value problems, September 2000.

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00-16 Fabian Wirth:

The generalized spectral radius and extremal norms, October 2000.

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00-17 Frank Stenger, Ahmad Reza Naghsh-Nilchi, Jenny Niebsch, Ronny Ramlau:

A unified approach to the approximate solution of PDE, November 2000.

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00-18 Peter Benner, Enrique S. Quintana-Ortí, Gregori Quintana-Ortí:

Parallel algorithms for model reduction of discrete-time systems, December 2000.

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00-19 Ronny Ramlau:

A steepest descent algorithm for the global minimization of Tikhonov-Phillips functional, December 2000.

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Reports 1999

99-01 Heike Faßbender:

The Parameterized SR Algorithm for Symplectic (Butterfly) Matrices, February 1999.

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99-02 Heike Faßbender:

Error Analysis of the symplectic Lanczos Method for the symplectic Eigenvalue Problem, March 1999.

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99-03 Eberhard Bänsch, Alfred Schmidt:

Simulation of dendritic crystal growth with thermal convection, March 1999.

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99-04 Eberhard Bänsch:

Finite element discretization of the Navier-Stokes equations with a free capillary surface, March 1999.

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99-05 Peter Benner:

Mathematik in der Berufspraxis, July 1999.
(Only hardcopies available!)

99-06 Andrew D.B. Paice, Fabian R. Wirth:

Robustness of nonlinear systems and their domains of attraction, August 1999.

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99-07 Peter Benner, Enrique S. Quintana-Ortí, Gregori Quintana-Ortí:

Balanced Truncation Model Reduction of Large-Scale Dense Systems on Parallel Computers, September 1999.

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99-08 Ronald Stöver:

Collocation methods for solving linear differential-algebraic boundary value problems, September 1999.

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99-09 Huseyin Akcay:

Modelling with Orthonormal Basis Functions, September 1999.

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99-10 Heike Faßbender, D. Steven Mackey, Niloufer Mackey:

Hamilton and Jacobi come full circle: Jacobi algorithms for structured Hamiltonian eigenproblems, October 1999.

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99-11 Peter Benner, Vicente Hernández, Antonio Pastor:

On the Kleinman Iteration for Nonstabilizable Systems, October 1999.

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99-12 Peter Benner, Heike Faßbender:

A Hybrid Method for the Numerical Solution of Discrete-Time Algebraic Riccati Equations, November 1999.

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99-13 Peter Benner, Enrique S. Quintana-Ortí, Gregori Quintana-Ortí:

Numerical Solution of Schur Stable Linear Matrix Equations on Multicomputers, November 1999.

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99-14 Eberhard Bänsch, Karol Mikula:

Adaptivity in 3D Image Processing, December 1999.

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Reports 1998

98-01 Peter Benner, Heike Faßbender:

An Implicitly Restarted Symplectic Lanczos Method for the Symplectic Eigenvalue Problem, July 1998.

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98-02 Heike Faßbender:

Sliding Window Schemes for Discrete Least-Squares Approximation by Trigonometric Polynomials, July 1998.

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98-03 Peter Benner, Maribel Castillo, Enrique Quintana-Ortí:

Parallel Partial Stabilizing Algorithms for Large Linear Control Systems, July 1998.

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98-04 Peter Benner:

Computational Methods for Linear--Quadratic Optimization, August 1998.

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98-05 Peter Benner, Ralph Byers, Enrique S. Quintana-Ortí, Gregorio Quintana-Ortí:

Solving Algebraic Riccati Equations on Parallel Computers Using Newton's Method with Exact Line Search, August 1998.

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98-06 Lars Grüne, Fabian Wirth:

On the rate of convergence of infinite horizon discounted optimal value functions, November 1998.

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98-07 Peter Benner, Volker Mehrmann, Hongguo Xu:

A Note on the Numerical Solution of Complex Hamiltonian and Skew-Hamiltonian Eigenvalue Problems, November 1998.

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98-08 Eberhard Bänsch, Burkhard Höhn:

Numerical simulation of a silicon floating zone with a free, capillary surface, December 1998.

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If any problems with this page occur and for any questions or inquiries regarding the report series Berichte aus der Technomathematik please contact Daniel Wilczek .

Acknowledgements: We thank Dr. Peter Benner for the initiation of this report series and for helping to construct these web pages.

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