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Volker Turau

Picture of Volker Turau
Prof. Dr. rer. nat. Volker Turau
Room 4.088, building E
Am Schwarzenberg-Campus 3
21073 Hamburg
phone+49 40 42878 - 3530
fax+49 40 42878 - 2581
e-mail

I am professor at Hamburg Universtity of Technology since October 2002.


Program Committee Activities | Editorial Activities | CV | Ph.D. students

Books

Algorithmische Graphentheorie - 4., extended and revised edition
De Gruyter Studium, 2015, ISBN 978-3-110-41727-2 (Solutions)

Erdős number

My Erdős number is 4.

Teaching

Publications

Tobias Lübkert, Marcus Venzke and Volker Turau. Impacts of Domestic Electric Water Heater Parameters on Demand Response. In Proceedings of the 5th D-A-CH+ Energy Informatics Conference 2016, September 2016. Klagenfurt, Austria. To be published.
@InProceedings{Telematik_D-A-CH+_DemandResponse_2016, author = {Tobias Lübkert and Marcus Venzke and Volker Turau}, title = {Impacts of Domestic Electric Water Heater Parameters on Demand Response}, booktitle = {Proceedings of the 5th D-A-CH+ Energy Informatics Conference 2016}, pages = , day = {29-30}, month = sep, year = 2016, location = {Klagenfurt, Austria}, }
Abstract: This paper analyzes the impact of the high dimen- sional parameter space of domestic electric water heaters (DEWH) for demand response (DR). To quantify the con- sumer comfort a novel metric is introduced considering a stochastic distribution of different water draw events. Incor- porating three control algorithms from literature, it is shown that all considered parameters of a DEWH except the heat conductivity have a significant impact on consumer satisfac- tion. The effect on DR is mainly influenced by the temper- ature range and the planning horizon, but also by the heat conductivity and the volume. In contrast, the rated power of the heating element and the nominal temperature have no significant impact on the effect on DR. The impacts are an- alyzed by varying these parameters in a simulation of 1000 DEWHs considering three different controllers: a common thermostat, an exchange price dependent nominal temper- ature changing mechanism and an energy scheduling algo- rithm proposed by Du and Lu.
Volker Turau and Christoph Weyer. Cascading Failures Caused by Node Overloading in Complex Networks. In Proceedings of the Joint Workshop on Cyber-Physical Security and Resilience in Smart Grids, April 2016. Vienna, Austria. To be published.
@InProceedings{Telematik_CPSR-SG2016_SmartGrid, author = {Volker Turau and Christoph Weyer}, title = {Cascading Failures Caused by Node Overloading in Complex Networks}, booktitle = {Proceedings of the Joint Workshop on Cyber-Physical Security and Resilience in Smart Grids}, pages = , day = {12}, month = apr, year = 2016, location = {Vienna, Austria}, }
Abstract: It is well known that complex networks are vulnerable to the failure of hubs in terms of structural robustness. An as yet less researched topic is dynamical robustness, which refers to the ability of a network to maintain its dynamical activity against local disturbances. This paper analyzes the impact of overload attacks in complex networks and gives a precise definition of this type of attack using the load redistribution model. The main contribution is a greedy algorithm to select a small number of candidates for an overload attack maximizing the impact with respect to the number of failed nodes and load increase. The quality of the algorithm is analyzed for a real power grid network.
Li-Hsing Yen, Jean-Yao Huang and Volker Turau. Designing Self-Stabilizing Systems Using Game Theory. ACM Transactions on Autonomous and Adaptive Systems, Volume 11, Issue 3, Article 18, 2017.
@Article{Telematik_Transactions on Autonomous and Adaptive Systems_2017, author = {Li-Hsing Yen and Jean-Yao Huang and Volker Turau}, title = {Designing Self-Stabilizing Systems Using Game Theory}, journal = {ACM Transactions on Autonomous and Adaptive Systems}, volume = {Volume 11, Issue 3, Article 18}, year = 2017, }
Abstract: Self-stabilizing systems tolerate transient faults by always returning to a legitimate system state within a finite time. This goal is challenged by several system features such as arbitrary system states after faults, various process execution models, and constrained process communication means. This work designs self-stabilizing distributed algorithms from the perspective of game theory, achieving an intended system goal through private goals of processes. We propose a generic game design for identifying a maximal independent set (MIS) or a maximal weighted independent set (MWIS) among all processes in a distributed system. From the generic game several specific games can be defined which differ in whether and how neighboring players influence each other. Turning the game designs into self-stabilizing algorithms, we obtain the first algorithms for the MWIS problem and also the first self-stabilizing MIS algorithm that considers node degree (including an analysis of its performance ratio). We also show how to handle simultaneous moves of processes in some process execution models. Simulation results indicate that, for various representative network topologies, the new algorithm outperforms existing methods in terms of MIS size and convergence rate. For the MWIS problem, the new algorithms performed only slightly worse than centralized greedy counterparts.

The complete list of publications is available separately.

Supervised Theses

Ongoing Theses