Axel Thümmler

Dr. Axel Thümmler
Computer Science Chair IV
University of Dortmund
August-Schmidt-Str. 12
44227 Dortmund

+49 170 / 5529372
Axel.Thuemmler@udo.edu

Dr. Axel Thümmler received the degree Diplom-Informatiker (M.S. in Computer Science) in 1998 and the degree Dr. rer. nat. (Ph.D. in Computer Science) in 2003, both from the University of Dortmund. From 1998 to 2004 he worked as a Ph.D. student and research scientist in the Computer Systems and Performance Evaluation group at the Department of Computer Science at the University of Dortmund. In 2004, he continued his work on a postdoctoral position in the Modelling and Simulation group at the same department. From 2004 to 2006, Dr. Thümmler contributes to the Collaborative Research Center on Modelling of Large Logistics Networks, SFB 559, funded by the Deutsche Forschungsgemeinschaft. Since 2006, he is employed as Team Leader and Project Manager at dSPACE GmbH, Paderborn. His research interests include automotive control systems, simulation optimization, communication networks, mobile computing, and performance evaluation techniques.

Research Interests

Automotive Control Systems

Simulation of networks of electronic control units

Optimization of Stochastic Models
Response surface methodology (RSM), evolutionary algorithms (EA), and Kriging metamodels for simulation optimization
Statistical ranking & selection procedures
OPEDo: Optimization and Performance Evaluation of Stochastic Models - Dortmund

Mobile Computing
Traffic modeling for wireless/wireline systems; Software: G-FIT 1.0
Performance evaluation of mobile communication systems
Adaptive QoS/revenue management for third-generation (3G) mobile networks

Numerical Analysis of Discrete Event Stochastic Systems
Numerical analysis of generalized semi-Markov processes (GSMP) with deterministic and exponentially distributed events
Quantitative analysis of deterministic and stochastic Petri nets (DSPN) and time-enhanced UML diagrams
DSPNexpress-NG: Open Source Toolkit for Performance Evaluation

Publications

Project Participation

02/2004 - 01/2006:	Modelling of Large Logistics Networks - Efficient Analysis Procedures (DFG Collaborative Research Center - SFB 559/M2)
02/2004 - 12/2005:	Traffic Modeling Techniques for Markovian Analysis of Communication Networks (DAAD German-Hungarian Exchange Program)
07/2002 - 06/2004:	Adaptive Methods for integrated Management of QoS and Provider Revenue in Beyond 3G (DFG project - QoS/Revenue Management)
03/2000 - 08/2004:	Parallel Numerical Analysis Methods for Discrete-Event Systems (DFG project - PARMA)
10/1999 - 09/2000:	Modeling and Evaluation of General Packet Radio Service (GPRS) IP-Backbone Networks (Uni-Do/Nokia Networks R&D cooperation)
08/1998 - 04/1999:	Parallel Solvers for Systems of Volterra Integral Equations (Uni-Do/Fraunhofer FIRST cooperation)

Teaching

Lectures

Mobile Kommunikationssysteme (WS 02/03, WS 01/02, WS 00/01)

Tutorials
Einführung in die Programmierung (WS 05/06)
Modellgestützte Analyse und Optimierung (SS 04)
C/C++ for beginners (in English) (WS 03/04)
Rechnerarchitektur (SS 01)
Programmierung paralleler Rechnersysteme (WS 99/00, WS 98/99)

Seminars
Entwurf, Analyse und Optimierung von Simulationsmodellen (WS 05/06)

Supervised Project Groups
PG462: Optimierungsalgorithmen für Simulationsmodelle (WS 04/05 & SS 05)
PG357: Zugriffsprotokolle für Mobilfunknetze der dritten Generation (SS 00 & WS 00/01)
PG325: Parallele Implementierung numerischer Verfahren für ein Netzwerk von Workstations (WS 98/99 & SS 99)

Supervised Diploma Theses
S. Dziwok, Zyklusgenaue Simulation automotiver Systeme auf virtuellen Hardware Plattformen, September 2009
F. Burkhardt, Parallele Realisierung der Response Surface Methode zur Optimierung von Simulationsmodellen, Oktober 2005
D. Proba, Quantitative Analyse zeitbehafteter UML Diagramme mit Anwendungen im Bereich mobiler Kommunikationssysteme, April 2003
J. Hänsel, Entwicklung eines Verfahrens zum adaptiven Performance Management für UMTS Netze, November 2001
J. Przybilke, Leistungsbewertung von General Packet Radio Service auf IP-Kernnetzen, Oktober 2000
M. Lohmann, Realisierung direkter und iterativer Löser für Systeme zweidimensionaler Integralgleichungen, März 2000
O. Waldhorst, Realisierung eines Verfahrens zur Generierung des Kerns einer General State Space Markov Chain, März 2000