Ralf Ackermann

According to our database, Ralf Ackermann authored at least 21 papers between 1981 and 2013.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2013

A service infrastructure for the Internet of Things based on XMPP.

Sven Bendel, Thomas Springer, Daniel Schuster, Alexander Schill, Ralf Ackermann, Michael Ameling

Proceedings of the 2013 IEEE International Conference on Pervasive Computing and Communications Workshops, 2013

2009

Using context information to enhance the functionality and usability of enterprise information systems.

Ralf Ackermann

Proceedings of the 39. Jahrestagung der Gesellschaft für Informatik, Im Focus das Leben, INFORMATIK 2009, Lübeck, Germany, September 28, 2009

2008

Routing Mechanism for Secure, Distributed Discovery Services for Global Auto-ID Networks.

Jons-Tobias Wamhoff, Eberhard Grummt, Ralf Ackermann

Proceedings of the RFID Technology - Concepts, Applications, Challenges, Proceedings of the 2nd International Workshop on RFID Technology, 2008

2007

Proof of Possession: Using RFID for Large-Scale Authorization Management.

Eberhard Grummt, Ralf Ackermann

Proceedings of the Constructing Ambient Intelligence, 2007

2005

Security-Related Issues in Peer-to-Peer Networks.

Luka Divac-Krnic, Ralf Ackermann

Proceedings of the Peer-to-Peer Systems and Applications, 2005

2004

The Digital Call Assistant: Determine Optimal Time Slots for Calls.

Manuel Görtz, Ralf Ackermann, Ralf Steinmetz

Proceedings of the Interactive Multimedia and Next Generation Networks: Second International Workshop on Multimedia Interactive Protocols and Systems, 2004

Context-aware Communication Services: A Framework for Building Enhanced IP Telephony Services.

Manuel Görtz, Ralf Ackermann, Johannes Schmitt, Ralf Steinmetz

Proceedings of the International Conference On Computer Communications and Networks (ICCCN 2004), 2004

Enhanced SIP Communication Services by Context Sharing.

Manuel Görtz, Ralf Ackermann, Ralf Steinmetz

Proceedings of the 30th EUROMICRO Conference 2004, 31 August, 2004

2003

Gateways and components for supplementary IP telephony services in heterogeneous environments.

Ralf Ackermann

PhD thesis, 2003

Using Context Information to Avoid Service Interactions in IP Telephony.

Manuel Görtz, Ralf Ackermann, Andreas Mauthe, Ralf Steinmetz

Proceedings of the Interactive Multimedia on Next Generation Networks, 2003

2002

Digital Watermarks Enabling E-Commerce Strategies: Conditional and User Specific Access to Services and Resources.

Jana Dittmann, Martin Steinebach, Petra Wohlmacher, Ralf Ackermann

EURASIP J. Adv. Signal Process., 2002

Using a Multi-Layer Approach to Tackle the Service Interaction Problem in Telephony Scenarios.

Manuel Görtz, Ralf Ackermann, Martin Karsten, Ralf Steinmetz

Proceedings of the 28th EUROMICRO Conference 2002, 4-6 September 2002, Dortmund, Germany, 2002

2001

IP-Telefonie und Firewalls, Probleme und Lösungen.

Utz Roedig, Ralf Ackermann, Ralf Steinmetz

Prax. Inf.verarb. Kommun., 2001

Conditional Access for Business and M-Commerce Applications using Annotation Watermarks.

Jana Dittmann, Petra Wohlmacher, Ralf Ackermann

Proceedings of the Communications and Multimedia Security Issues of the New Century, 2001

Vulnerabilities and Security Limitations of current IP Telephony Systems.

Ralf Ackermann, Markus Schumacher, Utz Roedig, Ralf Steinmetz

Proceedings of the Communications and Multimedia Security Issues of the New Century, 2001

2000

Associating network flows with user and application information.

Ralf Ackermann, Utz Roedig, Michael Zink, Carsten Griwodz, Ralf Steinmetz

Proceedings of the ACM Multimedia 2000 Workshops, Los Angeles, CA, USA, October 30, 2000

Using DMIF for Abstracting from IP-Telephony Signaling Protocols.

Ralf Ackermann, Vasilios Darlagiannis, Utz Roedig, Ralf Steinmetz

Proceedings of the Interactive Distributed Multimedia Systems and Telecommunication Services, 2000

1999

VDMFA, eine verteilte dynamische Firewallarchitektur für Multimedia-Dienste.

Christoph Rensing, Utz Roedig, Ralf Ackermann, Lars C. Wolf, Ralf Steinmetz

Proceedings of the Kommunikation in Verteilten Systemen, 1999

MBone2Tel - Telephone Users Meeting the MBone.

Ralf Ackermann, Jörg Pommnitz, Lars C. Wolf, Ralf Steinmetz

Proceedings of the Interactive Distributed Multimedia Systems and Telecommunication Services, 1999

1998

Agent-Q - das Diagnose- und Datenqualitätssystem (Ein Praxisbericht).

Thomas Kubela, Ralf Ackermann

Proceedings of the Integration heterogener Softwaresysteme, IHS'98, 1998

1981

Messungen zum Kommunikationsaufwand für Prozesse in einem lokalen Rechnernetz: Erfahrungen aus einer Implementation.

G. Neumann, Ralf Ackermann, Winfried Grünewald

Proceedings of the Implementierungssprachen für nichtsequentielle Programmsysteme, 1981