Seite drucken

Volker Turau

Foto von Volker Turau
Prof. Dr. rer. nat. Volker Turau
Raum 4.088, Gebäude E
Am Schwarzenberg-Campus 3
21073 Hamburg
Telefon040 42878 - 3530
Fax040 42878 - 2581
E-Mail

Seit Oktober 2002 bin ich Professor an der Technischen Universität Hamburg-Harburg.


Program Committee Activities | Editorial Activities | CV | Doktoranden

Bücher

Algorithmische Graphentheorie - 4., erweiterte und überarbeitete Auflage
De Gruyter Studium, 2015, ISBN 978-3-110-41727-2 (Lösungen)

Erdős-Zahl

Meine Erdős-Zahl ist 4.

Lehre

Publikationen

Gerry Siegemund und Volker Turau. PSVR - Self-Stabilizing Publish/Subscribe Communication for Ad-Hoc Networks (Short Paper). In Proceedings of Stabilization, Safety, and Security of Distributed Systems - 18th International Symposium, November 2016, pp. 346–351. Lyon, France.
@InProceedings{Telematik_SSS_2016, author = {Gerry Siegemund and Volker Turau}, title = {PSVR - Self-Stabilizing Publish/Subscribe Communication for Ad-Hoc Networks (Short Paper)}, booktitle = {Proceedings of Stabilization, Safety, and Security of Distributed Systems - 18th International Symposium}, pages = {346-351}, day = {7-10}, month = nov, year = 2016, location = {Lyon, France}, }
Abstract: PSVR is a novel routing algorithm for pub/sub systems in ad-hoc networks focusing on scenarios where communications links are unstable and nodes frequently change subscriptions. It is a compromise of size and maintenance effort for routing tables due to sub- and unsubscriptions and the length of routing paths. Designed in a self-stabilizing manner it scales well with network size. The evaluation with real world deployment reveals that PSVR only needs slightly more messages than a close to optimal routing structure for publication delivery, and creates shorter routing paths than an existing self-stabilizing algorithm.
Florian Kauer, Maximilian Köstler, Tobias Lübkert und Volker Turau. Formal Analysis and Verification of the IEEE 802.15.4 DSME Slot Allocation. In Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, November 2016, pp. 140–147. Malta.
@InProceedings{Telematik_MSWIM_Formal_DSME, author = {Florian Kauer and Maximilian Köstler and Tobias Lübkert and Volker Turau}, title = {Formal Analysis and Verification of the IEEE 802.15.4 DSME Slot Allocation}, booktitle = {Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems}, pages = {140-147}, month = nov, year = 2016, location = {Malta}, }
Abstract: Providing dependability is still a major issue for wireless mesh networks, which restrains their application in industrial contexts. The widespread CSMA/CA medium access can provide high throughput and low latency, but can not prevent packet loss due to collisions, especially in very large and dense networks. Time slotted medium access techniques together with a distributed slot management, as proposed by the Distributed Synchronous Multi-channel Extension (DSME) of the IEEE 802.15.4 standard, are promising to provide low packet loss, high scalability and bounded end-to-end delays. However, our implementation, openDSME, exposed some weaknesses. While the allocated slots allow for reliable data transmission, the slot management itself is conducted via CSMA/CA and is thus vulnerable to packet loss, eventually leading to an inconsistent slot allocation. This paper uses the UPPAAL framework for formal analysis and verification of the slot management process. The analysis identifies weaknesses of the slot allocation process under communication and node failures. However, it is shown that inconsistencies are eventually resolved and improvements to the procedure are proposed that reduce the negative impact of failed slot allocation procedures significantly.
Tobias Lübkert, Marcus Venzke und 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.
@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.

Die vollständige Publikationsliste ist separat verfügbar.