Ralf Ackermann

21 papers B 1Journal 2Unranked 16
YearRankTypeTitle / Venue / Authors
2013 — conf
A service infrastructure for the Internet of Things based on XMPP.
PerCom Workshops
Sven Bendel, Thomas Springer, Daniel Schuster, Alexander Schill, Ralf Ackermann, Michael Ameling
2009 — conf
Using context information to enhance the functionality and usability of enterprise information systems.
GI Jahrestagung
Ralf Ackermann
2008 — conf
Routing Mechanism for Secure, Distributed Discovery Services for Global Auto-ID Networks.
IWRT
Jons-Tobias Wamhoff, Eberhard Grummt, Ralf Ackermann
2007 — conf
Proof of Possession: Using RFID for Large-Scale Authorization Management.
AmI Workshops
Eberhard Grummt, Ralf Ackermann
2005 — ch.
Security-Related Issues in Peer-to-Peer Networks.
Peer-to-Peer Systems and Applications
Luka Divac-Krnic, Ralf Ackermann
2004 B conf
Context-aware Communication Services: A Framework for Building Enhanced IP Telephony Services.
ICCCN
Manuel Görtz, Ralf Ackermann, Johannes Schmitt, Ralf Steinmetz
2004 — conf
Enhanced SIP Communication Services by Context Sharing.
EUROMICRO
Manuel Görtz, Ralf Ackermann, Ralf Steinmetz
2004 — conf
The Digital Call Assistant: Determine Optimal Time Slots for Calls.
MIPS
Manuel Görtz, Ralf Ackermann, Ralf Steinmetz
2003 — —
Gateways and components for supplementary IP telephony services in heterogeneous environments.
Ralf Ackermann
2003 — conf
Using Context Information to Avoid Service Interactions in IP Telephony.
MIPS
Manuel Görtz, Ralf Ackermann, Andreas Mauthe, Ralf Steinmetz
2002 J jnl
Digital Watermarks Enabling E-Commerce Strategies: Conditional and User Specific Access to Services and Resources.
EURASIP J. Adv. Signal Process.
Jana Dittmann, Martin Steinebach, Petra Wohlmacher, Ralf Ackermann
2002 — conf
Using a Multi-Layer Approach to Tackle the Service Interaction Problem in Telephony Scenarios.
EUROMICRO
Manuel Görtz, Ralf Ackermann, Martin Karsten, Ralf Steinmetz
2001 — conf
Conditional Access for Business and M-Commerce Applications using Annotation Watermarks.
Communications and Multimedia Security
Jana Dittmann, Petra Wohlmacher, Ralf Ackermann
2001 J jnl
IP-Telefonie und Firewalls, Probleme und Lösungen.
Prax. Inf.verarb. Kommun.
Utz Roedig, Ralf Ackermann, Ralf Steinmetz
2001 — conf
Vulnerabilities and Security Limitations of current IP Telephony Systems.
Communications and Multimedia Security
Ralf Ackermann, Markus Schumacher, Utz Roedig, Ralf Steinmetz
2000 — conf
Associating network flows with user and application information.
ACM Multimedia Workshops
Ralf Ackermann, Utz Roedig, Michael Zink, Carsten Griwodz, Ralf Steinmetz
2000 — conf
Using DMIF for Abstracting from IP-Telephony Signaling Protocols.
IDMS
Ralf Ackermann, Vasilios Darlagiannis, Utz Roedig, Ralf Steinmetz
1999 — conf
MBone2Tel - Telephone Users Meeting the MBone.
IDMS
Ralf Ackermann, Jörg Pommnitz, Lars C. Wolf, Ralf Steinmetz
1999 — conf
VDMFA, eine verteilte dynamische Firewallarchitektur für Multimedia-Dienste.
Kommunikation in Verteilten Systemen
Christoph Rensing, Utz Roedig, Ralf Ackermann, Lars C. Wolf, Ralf Steinmetz
1998 — conf
Agent-Q - das Diagnose- und Datenqualitätssystem (Ein Praxisbericht).
Workshop Integration heterogener Softwaresysteme
Thomas Kubela, Ralf Ackermann
1981 — conf
Messungen zum Kommunikationsaufwand für Prozesse in einem lokalen Rechnernetz: Erfahrungen aus einer Implementation.
Implementierungssprachen für nichtsequentielle Programmsysteme
G. Neumann, Ralf Ackermann, Winfried Grünewald