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2010 – 2019
- 2013
[c17]Sven Bendel, Thomas Springer, Daniel Schuster, Alexander Schill, Ralf Ackermann, Michael Ameling:
A service infrastructure for the Internet of Things based on XMPP. PerCom Workshops 2013: 385-388
2000 – 2009
- 2009
- [c16]Ralf Ackermann:
Using context information to enhance the functionality and usability of enterprise information systems. GI Jahrestagung 2009: 237 - 2008
- [c15]Jons-Tobias Wamhoff, Eberhard Grummt, Ralf Ackermann:
Routing Mechanism for Secure, Distributed Discovery Services for Global Auto-ID Networks. IWRT 2008: 136-141 - 2007
- [c14]Eberhard Grummt, Ralf Ackermann:
Proof of Possession: Using RFID for Large-Scale Authorization Management. AmI Workshops 2007: 174-182 - 2005
- [p1]Luka Divac-Krnic, Ralf Ackermann:
Security-Related Issues in Peer-to-Peer Networks. Peer-to-Peer Systems and Applications 2005: 529-545 - 2004
- [c13]Manuel Görtz, Ralf Ackermann, Ralf Steinmetz
:
Enhanced SIP Communication Services by Context Sharing. EUROMICRO 2004: 272-279 - [c12]Manuel Görtz, Ralf Ackermann, Johannes Schmitt, Ralf Steinmetz:
Context-aware Communication Services: A Framework for Building Enhanced IP Telephony Services. ICCCN 2004: 535-540 - [c11]Manuel Görtz, Ralf Ackermann, Ralf Steinmetz:
The Digital Call Assistant: Determine Optimal Time Slots for Calls. MIPS 2004: 230-241 - 2003
- [b1]Ralf Ackermann:
Gateways and components for supplementary IP telephony services in heterogeneous environments. Darmstadt University of Technology, Germany, 2003 - [c10]Manuel Görtz, Ralf Ackermann, Andreas Mauthe, Ralf Steinmetz:
Using Context Information to Avoid Service Interactions in IP Telephony. MIPS 2003: 340-351 - 2002
- [j2]Jana Dittmann, Martin Steinebach, Petra Wohlmacher, Ralf Ackermann:
Digital Watermarks Enabling E-Commerce Strategies: Conditional and User Specific Access to Services and Resources. EURASIP J. Adv. Signal Process. 2002(2): 174-184 (2002) - [c9]Manuel Görtz, Ralf Ackermann, Martin Karsten, Ralf Steinmetz:
Using a Multi-Layer Approach to Tackle the Service Interaction Problem in Telephony Scenarios. EUROMICRO 2002: 207-215 - 2001
- [j1]Utz Roedig, Ralf Ackermann, Ralf Steinmetz:
IP-Telefonie und Firewalls, Probleme und Lösungen. Prax. Inf.verarb. Kommun. 24(1): 32-40 (2001) - [c8]Ralf Ackermann, Markus Schumacher, Utz Roedig, Ralf Steinmetz:
Vulnerabilities and Security Limitations of current IP Telephony Systems. Communications and Multimedia Security 2001 - [c7]Jana Dittmann, Petra Wohlmacher, Ralf Ackermann:
Conditional Access for Business and M-Commerce Applications using Annotation Watermarks. Communications and Multimedia Security 2001 - 2000
- [c6]Ralf Ackermann, Vasilios Darlagiannis, Utz Roedig, Ralf Steinmetz:
Using DMIF for Abstracting from IP-Telephony Signaling Protocols. IDMS 2000: 104-115 - [c5]Ralf Ackermann, Utz Roedig, Michael Zink, Carsten Griwodz, Ralf Steinmetz:
Associating network flows with user and application information. ACM Multimedia Workshops 2000: 149-152
1990 – 1999
- 1999
- [c4]Ralf Ackermann, Jörg Pommnitz, Lars C. Wolf, Ralf Steinmetz:
MBone2Tel - Telephone Users Meeting the MBone. IDMS 1999: 121-132 - [c3]Christoph Rensing, Utz Roedig, Ralf Ackermann, Lars C. Wolf, Ralf Steinmetz:
VDMFA, eine verteilte dynamische Firewallarchitektur für Multimedia-Dienste. Kommunikation in Verteilten Systemen 1999: 144-157 - 1998
- [c2]Thomas Kubela, Ralf Ackermann:
Agent-Q - das Diagnose- und Datenqualitätssystem (Ein Praxisbericht). Workshop Integration heterogener Softwaresysteme 1998: 55-67
1980 – 1989
- 1981
- [c1]G. Neumann, Ralf Ackermann, Winfried Grünewald:
Messungen zum Kommunikationsaufwand für Prozesse in einem lokalen Rechnernetz: Erfahrungen aus einer Implementation. Implementierungssprachen für nichtsequentielle Programmsysteme 1981: 186-208
Coauthor Index
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