Institut für Parallele und Verteilte Systeme (IPVS)

Publikationen

Eine Übersicht der Publikationen des Instituts für Parallele und Verteilte Systeme

Publikationen VS: Bibliographie 2003 BibTeX

 
@inproceedings {INPROC-2003-65,
   author = {Illya Stepanov and J{\"o}rg H{\"a}hner and Christian Becker and Jing Tian and Kurt Rothermel},
   title = {{A Meta-Model and Framework for User Mobility in Mobile Networks}},
   booktitle = {Proceedings of the 11th International Conference on Networking 2003 (ICON 2003), Sydney, Australia, September 28 - October 1, 2003},
   publisher = {IEEE},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   pages = {231--238},
   type = {Konferenz-Beitrag},
   month = {September},
   year = {2003},
   isbn = {0-7803-7788-5},
   keywords = {simulation; mobility modeling; user movement},
   language = {Englisch},
   cr-category = {C.2.1 Network Architecture and Design,     C.4 Performance of Systems,     I.6.3 Simulation and Modeling Applications},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-65/INPROC-2003-65.pdf,     http://canu.informatik.uni-stuttgart.de/mobisim},
   contact = {illya.stepanov@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Mobility patterns play an important role for performance evaluations of mobile networks. To simulate user movement, existing simulation tools provide only a few simple mobility models (e.g., random movement) suitable for particular scenarios. To evaluate a new scenario, an appropriate model needs to be created, but this requires extra work that distracts the researcher from his/her main task. In general, three key elements determine the mobility of users: the spatial environment, the user trip sequences, and the user movement dynamics (e.g., speed). In this paper, we introduce a meta-model that integrates these three elements in an easy-to-use framework, allowing a flexible modeling of user mobility in custom scenarios. The framework is available for download as a stand-alone trace generator and may be used together with any simulation or emulation tool for mobile networks to evaluate a specific scenario.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-65&engl=0}
}
@inproceedings {INPROC-2003-36,
   author = {Jing Tian and Lu Han and Kurt Rothermel and Christian Cseh},
   title = {{Spatially Aware Packet Routing for Mobile Ad Hoc Inter-Vehicle Radio Networks}},
   booktitle = {Proceedings of the IEEE 6th International Conference on Intelligent Transportation Systems (ITSC). Vol. 2},
   publisher = {IEEE},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {1546--1552},
   type = {Konferenz-Beitrag},
   month = {Oktober},
   year = {2003},
   isbn = {0-7803-8125-4},
   language = {Englisch},
   cr-category = {C.2.1 Network Architecture and Design,     C.2.2 Network Protocols},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-36/INPROC-2003-36.pdf},
   contact = {jing.tian@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Inter-Vehicle Communication will become an important building block for ITS telematics applications like safety and warning functions. Mobile ad hoc networks (MANETs) can serve as a local wireless network for exchanging information between cars for cooperative driver assistance applications. For the routing of data packets in such large-scale MANETs consisting of vehicles on the road, geographic multi-hop packet forwarding is a promising approach. However, a main drawback is that it performs poorly in networks with many topology holes. In this paper, we propose a spatially aware packet routing approach to predict permanent topology holes caused by spatial constraints and avoid them aforehand. This approach is generic and can be used in combination with any existing geographic forwarding protocol as an extension. Our simulations demonstrate that spatial awareness can significantly improve geographic forwarding performance in situations with many permanent topology holes, like in dynamic vehicle networks.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-36&engl=0}
}
@inproceedings {INPROC-2003-26,
   author = {Marcus Handte and Christian Becker and Gregor Schiele},
   title = {{Experiences: Minimalism and Extensibility in BASE}},
   booktitle = {Proceedings of the System Support for Ubiquitous Computing Workshop (Ubisys03) at the Fifth Annual Conference on Ubiquitous Computing (Ubicomp03); Seattle, Washington, October 12, 2003},
   publisher = {online proceedings},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {1--8},
   type = {Konferenz-Beitrag},
   month = {Oktober},
   year = {2003},
   keywords = {micro-broker; BASE; PCOM; 3PC; ubiquitous computing; pervasive computing; middleware},
   language = {Englisch},
   cr-category = {C.2.4 Distributed Systems,     D.2.11 Software Engineering Software Architectures,     D.2.12 Software Engineering Interoperability,     D.4.4 Operating Systems Communications Management},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-26/INPROC-2003-26.pdf,     http://ciae.cs.uiuc.edu/ubisys/program.html,     http://ciae.cs.uiuc.edu/ubisys/},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {In the vision of Ubiquitous Computing everyday objects become smart. Technically, this requires some sort of processing and communication technology. We have designed and implemented a middleware for spontaneous networking in Ubiquitous Computing environments. The major objectives were minimalism and extensibility in order to deploy the middleware on a variety of devices ranging from sensor nodes to classical general purpose computers. In this paper we will assess the taken approach based on two follow-up projects: the port of BASE to a small embedded system and the design and implementation of a component system on top of BASE. While the fundamental concepts and design principles of BASE have proven to be solid, both projects provided insights that led to minor conceptual and major technical changes.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-26&engl=0}
}
@inproceedings {INPROC-2003-24,
   author = {Frank D{\"u}rr and Kurt Rothermel},
   title = {{On a Location Model for Fine-Grained Geocast}},
   booktitle = {UbiComp 2003: Ubiquitous Computing (Proceedings of the Fifth International Conference on Ubiquitous Computing 2003); Seattle, WA, October 2003},
   editor = {Anind K. Dey and Albrecht Schmidt and Joseph F. McCarthy},
   publisher = {Springer-Verlag},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   series = {Lecture Notes in Computer Science},
   volume = {2864},
   pages = {18--35},
   type = {Konferenz-Beitrag},
   month = {Oktober},
   year = {2003},
   isbn = {3-540-20301-X},
   keywords = {Ubiquitous Computing; Location Model; Geocast},
   language = {Englisch},
   cr-category = {C.2.2 Network Protocols},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-24/INPROC-2003-24.pdf,     http://www.springerlink.com/content/e9apt8y1w5nmem89/},
   contact = {frank.duerr@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Geographic communication (geocast) is used to send messages to geographic areas, e.g. to distribute warning messages or other information within these areas. It is based on a location model which is used to determine a message's target area and the receivers' positions and therefore has strong influence on the achievable granularity of geographic addressing. A hybrid location model and and a fine-grained addressing scheme for geocast based on this model are presented in this paper which support two- and three-dimensional geometric locations as well as symbolic locations like room numbers, embedded local coordinate systems, and mobile target areas like trains.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-24&engl=0}
}
@inproceedings {INPROC-2003-21,
   author = {Martin Bauer and Lamine Jendoubi and Kurt Rothermel and Engelbert Westk{\"a}mper},
   title = {{Grundlagen ubiquit{\"a}rer Systeme und deren Anwendung in der ``Smart Factory''}},
   booktitle = {Industrie Management - Zeitschrift f{\"u}r industrielle Gesch{\"a}ftsprozesse},
   editor = {Norbert Gronau and Hermann Krallmann and Bernd Scholz-Reiter},
   address = {Berlin},
   publisher = {GITO mbH Verlag f{\"u}r Industrielle Organisation},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   volume = {19},
   number = {6},
   pages = {17--20},
   type = {Konferenz-Beitrag},
   month = {Dezember},
   year = {2003},
   keywords = {Smart Factory; Ubiquitous Computing; R{\"a}umliche Umgebungsmodelle; kontext-bezogene Systeme; context-aware systems; spatial world models; Nexus},
   language = {Deutsch},
   cr-category = {C.2.4 Distributed Systems,     H.2.4 Database Management Systems,     H.2.8 Database Applications,     H.3.4 Information Storage and Retrieval Systems and Software,     J.1 Administration Data Processing,     J.7 Computers in Other Systems},
   ee = {http://www.nexus.uni-stuttgart.de,     http://www.industrie-management.de},
   contact = {Kurt.Rothermel@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme;     Universit{\"a}t Stuttgart, Institut f{\"u}r Industrielle Fertigung und Fabrikbetrieb (IFF)},
   abstract = {Die rasch fortschreitende Entwicklung kleiner mobiler Ger{\"a}te sowie mit eingebetteter Sensorik und Aktorik versehener Alltagsgegenst{\"a}nde erm{\"o}glicht eine Vielzahl neuartiger Anwendungen. Die F{\"a}higkeit zur drahtlosen Kommunikation und zur Positionsbestimmung bereitet die Basis lokations- und kontextbezogener Systeme, die seit einigen Jahren im Projekt Nexus an der Universit{\"a}t Stuttgart untersucht werden. Der Einsatz dieser Technologien im produktionstechnischem Umfeld, z.B. der hier vorgestellten dezentralen Betriebsmittelverwaltung, er{\"o}ffnet dabei ein vollkommen neues Anwendungsgebiet.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-21&engl=0}
}
@inproceedings {INPROC-2003-20,
   author = {Kurt Rothermel and Dominique Dudkowski and Frank D{\"u}rr and Martin Bauer and Christian Becker},
   title = {{Ubiquitous Computing - More than Computing Anytime Anyplace?}},
   booktitle = {Proceedings of the 49. Photogrammetrische Woche},
   address = {Stuttgart},
   publisher = {ifp},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   type = {Konferenz-Beitrag},
   month = {September},
   year = {2003},
   keywords = {Kontext; kontextbezogene Systeme; Ubiquitous Computing; Nexus},
   language = {Deutsch},
   cr-category = {H.2.8 Database Applications,     H.3.4 Information Storage and Retrieval Systems and Software},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-20/INPROC-2003-20.pdf,     http://www.nexus.uni-stuttgart.de},
   contact = {Kurt.Rothermel@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {The rapid development of mobile communication networks and the availability of miniaturized and inexpensive sensor technology allow for the development of multifunctional mobile devices that are able to collect and communicate context information. We also currently see a clear trend towards the integration of embedded systems including sensors into {\ss}mart`` everyday things, which is also referred to as Ubiquitous Computing. The deployment of sensor technology allows for so-called context-aware applications, going far beyond of providing mobile access to information and computing resources. Context-aware applications exploit captured sensor information to adapt to the current situation of mobile users. For instance, the information offered to a user may depend on his current location, and the way how it is presented to him may depend on the speed he moves, whether he is on its own or with others, and so on. In this paper, we characterize context-aware applications and present the vision of a digital world model as the foundation for this class of applications. Further, the paper discusses the benefits and reseach challenges associated with digital world models, which allow applications to take into account the state of the real world and react to state changes.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-20&engl=0}
}
@inproceedings {INPROC-2003-19,
   author = {Audun J{\o}sang and Elizabeth Gray and Michael Kinateder},
   title = {{Analysing Topologies of Transitive Trust}},
   booktitle = {Proceedings of the First International Workshop on Formal Aspects in Security \& Trust: FAST 2003; Pisa, Italy, September 2003},
   publisher = {IIT-CNR},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {9--22},
   type = {Konferenz-Beitrag},
   month = {September},
   year = {2003},
   keywords = {trust; transitive; reputation; recommendation},
   language = {Englisch},
   cr-category = {J.4 Social and Behavioral Sciences,     C.2.4 Distributed Systems,     H.3.5 Online Information Services},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-19/INPROC-2003-19.pdf,     http://unitec.informatik.uni-stuttgart.de/},
   contact = {Michael Kinateder Kinateder@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Transacting and interacting through computer networks makes it difficult to use traditional methods for establishing trust between parties. Creating substitutes by which people, organisations and software agents can derive trust in others through computer networks requires computerised analysis of trust topologies. This paper describes diverse dimensions of trust that are needed for analysing trust topologies, and provides a notation with which to express trust relationships in terms of these dimensions. The result is a simple way of specifying topologies of trust from which derived trust relationships can be automatically and securely computed.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-19&engl=0}
}
@inproceedings {INPROC-2003-18,
   author = {Michael Kinateder and Siani Pearson},
   title = {{A Privacy-Enhanced Peer-to-Peer Reputation System}},
   booktitle = {Proceedings of the 4th International Conference on Electronic Commerce and Web Technologies: EC-Web 2003; Prague, Czech Republic, September 2003},
   editor = {Kurt Bauknecht and A Min Tjoa and Gerald Quirchmayr},
   address = {Heidelberg},
   publisher = {Springer-Verlag},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   series = {Lecture Notes in Computer Science},
   volume = {2738},
   pages = {206--215},
   type = {Konferenz-Beitrag},
   month = {September},
   year = {2003},
   isbn = {3-540-40808-8},
   keywords = {trust; reputation; recommendation; trusted platforms; trusted computing platform alliance; TCPA; trusted computing group; TCG; privacy; security},
   language = {Englisch},
   cr-category = {B.8 Performance and Reliability,     D.4.6 Operating Systems Security and Protection,     H.3.4 Information Storage and Retrieval Systems and Software,     H.3.5 Online Information Services,     H.4.2 Information Systems Applications Types of Systems,     K.4.1 Computers and Society Public Policy Issues,     K.4.4 Electronic Commerce,     K.6.5 Security and Protection},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-18/INPROC-2003-18.pdf,     http://unitec.informatik.uni-stuttgart.de/},
   contact = {Michael Kinateder kinateder@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {In this paper, a method is described for providing a distributed reputation system with enhanced privacy and security as a design feature. This is achieved using a network of trusted agents on each client platform that exploit Trusted Computing Platform Alliance (TCPA) technology.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-18&engl=0}
}
@inproceedings {INPROC-2003-17,
   author = {Kurt Rothermel and Dieter Fritsch and Bernhard Mitschang and Paul J. K{\"u}hn and Martin Bauer and Christian Becker and Christian Hauser and Daniela Nicklas and Steffen Volz},
   title = {{SFB 627: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme}},
   booktitle = {Proceedings Informatik 2003},
   address = {Frankfurt},
   publisher = {Gesellschaft f{\"u}r Informatik},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   type = {Konferenz-Beitrag},
   month = {September},
   year = {2003},
   keywords = {Umgebungsmodelle; kontext-bezogene Systeme; Nexus; Spatial World Models; context-aware systems},
   language = {Deutsch},
   cr-category = {C.2.4 Distributed Systems,     H.2.4 Database Management Systems,     H.2.8 Database Applications,     H.3.4 Information Storage and Retrieval Systems and Software},
   ee = {http://www.nexus.uni-stuttgart.de},
   contact = {Kurt.Rothermel@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme;     Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware;     Universit{\"a}t Stuttgart, Institut f{\"u}r Kommunikationsnetze und Rechnersysteme (IKR);     Universit{\"a}t Stuttgart, Institut f{\"u}r Photogrammetrie (ifp)},
   abstract = {Ziel des Sonderforschungsbereichs 627 ``Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme'' ist die Erforschung von Methoden und Verfahren f{\"u}r die Definition, die Verwaltung und die Nutzung von digitalen Umgebungsmodellen. Existierende Informationsr{\"a}ume werden mit komplexen Modellen der realen Welt verschr{\"a}nkt und erlauben so neuartige Anwendungen. Insbesondere die Klasse der ortsbezogenen Anwendungen und aktuelle Forschungsgebiete wie das Ubiquitous Computing k{\"o}nnen von solchen Umgebungsmodellen profitieren, oder werden durch sie erst erm{\"o}glicht.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-17&engl=0}
}
@inproceedings {INPROC-2003-13,
   author = {Christian Becker and Gregor Schiele and Holger Gubbels and Kurt Rothermel},
   title = {{BASE - A Micro-broker-based Middleware For Pervasive Computing}},
   booktitle = {Proceedings of the First IEEE International Conference on Pervasive Computing and Communication (PerCom), March 23-26, Fort Worth, USA},
   address = {Los Alamitos},
   publisher = {IEEE Computer Society},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {443--451},
   type = {Konferenz-Beitrag},
   month = {M{\"a}rz},
   year = {2003},
   isbn = {0-7695-1895},
   keywords = {Middleware, Ubiquitous Computing, Microbroker, Micro-broker, BASE},
   language = {Englisch},
   cr-category = {C.2.4 Distributed Systems},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-13/INPROC-2003-13.pdf},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Pervasive computing environments add a multitude of additional devices to our current computing landscapes. Specialized embedded systems provide sensor information about the real world or offer a distinct functionality, e.g. presentation on a “smart wall”. Spontaneous networking leads to constantly changing availability of services. This requires middleware support to ease application development. Additionally, we argue that an extensible middleware platform covering small embedded systems to full-fledged desktop computers is needed. Such a middleware should provide easy-to-use abstractions to access remote services and device-specific capabilities. We present a micro-broker- based approach which meets these requirements by allowing uniform access to device capabilities and services through proxies and the integration of different interoperability protocols. A minimum configuration of the middleware can be executed on embedded systems. Resource-rich execution environments are supported by the extensibility of the middleware.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-13&engl=0}
}
@inproceedings {INPROC-2003-12,
   author = {Daniel Herrscher and Steffen Maier and Kurt Rothermel},
   title = {{Distributed Emulation of Shared Media Networks}},
   booktitle = {Proceedings of the 2003 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS 2003), Montr{\'e}al, Quebec, Canada, July 20-24, 2003},
   publisher = {SCS},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {226--233},
   type = {Konferenz-Beitrag},
   month = {Juli},
   year = {2003},
   isbn = {1-56555-269-5},
   keywords = {network emulation; distributed emulation; performance analysis; shared media; CSMA/CD},
   language = {Englisch},
   cr-category = {C.2.5 Local and Wide-Area Networks,     D.4.4 Operating Systems Communications Management,     I.6.3 Simulation and Modeling Applications},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-12/INPROC-2003-12.pdf,     ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-12/INPROC-2003-12.ps,     http://net.informatik.uni-stuttgart.de/},
   contact = {herrscher@informatik.uni-stuttgart.de, maier@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Comparative performance measurements of distributed applications and network protocols require the availability of appropriate network environments. Network emulation approaches offer a flexible way to mimic the properties of a variety of networks. While there are several centralized and distributed emulation tools available that can mimic the behavior of point-to-point links, shared media communication can only be emulated by totally centralized tools so far. To permit the emulation of large-scale mixed network scenarios, the emulation of shared media networks has to be performed in a distributed way also. In this paper, we introduce several strategies to emulate shared media networks in a distributed fashion. For one promising approach, the distributed emulation of carrier sensing, we present a prototype implementation. Measurements show the applicability and limitations of our solution.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-12&engl=0}
}
@inproceedings {INPROC-2003-11,
   author = {Christian Becker and Gregor Schiele},
   title = {{Middleware and Application Adaptation Requirements and their Support in Pervasive Computing}},
   booktitle = {Proceedings of the 23rd International Conference on Distributed Computing Systems Workshops (ICDCS 2003), 3rd International Workshop on Distributed Auto-adaptive and Reconfigurable Systems (DARES), Providence, USA, May 19-22},
   address = {Los Alamitos},
   publisher = {IEEE Computer Society},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {98--103},
   type = {Konferenz-Beitrag},
   month = {Mai},
   year = {2003},
   isbn = {0-7695-1921-0},
   language = {Englisch},
   cr-category = {C.2.4 Distributed Systems},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-11/INPROC-2003-11.pdf},
   contact = {Email an christian.becker@informatik.uni-stuttgart.de oder gregor.schiele@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Pervasive computing environments are characterized by an additional heterogeneity compared to existing computing infrastructures. Devices ranging from small embedded systems to full-fledged computers are connected via spontaneously formed networks. In this paper we analyze requirements of applications and system software to cope with the dynamically changing execution environment. Based on our micro-broker-based middleware BASE a component framework for pervasive computing supporting application adaptation is proposed.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-11&engl=0}
}
@inproceedings {INPROC-2003-10,
   author = {Michael Kinateder and Kurt Rothermel},
   title = {{Architecture and Algorithms for a Distributed Reputation System}},
   booktitle = {Proceedings of the First International Conference on Trust Management: iTrust'03; Heraklion, Crete, Greece, May 28-30, 2003},
   editor = {Paddy Nixon and Sotirios Terzis},
   address = {Heidelberg},
   publisher = {Springer-Verlag},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   series = {Lecture Notes in Computer Science},
   volume = {2692},
   pages = {1--16},
   type = {Konferenz-Beitrag},
   month = {Mai},
   year = {2003},
   isbn = {3-540-40224-1},
   keywords = {trust; trust management; reputation; recommendation; distributed; peer-to-peer},
   language = {Englisch},
   cr-category = {C.2.4 Distributed Systems,     H.3.3 Information Search and Retrieval,     H.3.4 Information Storage and Retrieval Systems and Software,     H.3.5 Online Information Services,     H.4.2 Information Systems Applications Types of Systems,     I.2.4 Knowledge Representation Formalisms and Methods,     I.2.11 Distributed Artificial Intelligence,     J.4 Social and Behavioral Sciences},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-10/INPROC-2003-10.pdf,     http://www.springerlink.com/link.asp?id=1e11b5pcvww3qvuf,     http://unitec.informatik.uni-stuttgart.de},
   contact = {Michael Kinateder kinateder@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Trust is an essential component of successful interactions in social life as well as in business relationships. In this paper we propose a system that closely reflects real-world trust building in an online environment. We describe the models used to represent trust in entities in various categories, algorithms to calculate and update trust based on experiences of entities with each other and the agent interactions necessary for finding and exchanging trust information.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-10&engl=0}
}
@inproceedings {INPROC-2003-09,
   author = {Martin Bauer and Christian Becker and J{\"o}rg H{\"a}hner and Gregor Schiele},
   title = {{ContextCube - Providing Context Information Ubiquitously}},
   booktitle = {Proceedings of the 23rd International Conference on Distributed Computing Systems Workshops (ICDCS 2003)},
   address = {Los Alamitos},
   publisher = {IEEE Computer Society},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   pages = {308--313},
   type = {Konferenz-Beitrag},
   month = {Mai},
   year = {2003},
   isbn = {0-7695-1921-0},
   language = {Englisch},
   cr-category = {H.3.4 Information Storage and Retrieval Systems and Software},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-09/INPROC-2003-09.pdf,     http://www.nexus.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Sensing the state of the environment is an important source for context-aware applications. Several approaches exist to provide sensor information to mobile application nodes. As the extreme cases we have pure infrastructures and pure ad hoc networks. In order to allow sensor platforms to serve both of these approaches, we have designed a universal sensor platform and integrated it into an infrastructure-based approach as well as into ad hoc networks. In this paper we discuss the requirements on such a platform, the design, and the experiences.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-09&engl=0}
}
@inproceedings {INPROC-2003-08,
   author = {Jing Tian and Luca Coletti},
   title = {{Routing approach in CarTALK 2000 project}},
   booktitle = {Proceedings of the IST Mobile \& Wireless Communications Summit 2003. Vol. 2},
   address = {Aveiro - Portugal},
   publisher = {Instituto de Telecomunica{\,c}{\~o}es (IT)},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {473--477},
   type = {Konferenz-Beitrag},
   month = {Juni},
   year = {2003},
   keywords = {mobile ad hoc routing},
   language = {Englisch},
   cr-category = {C.2.1 Network Architecture and Design,     C.2.2 Network Protocols},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-08/INPROC-2003-08.pdf},
   contact = {jing.tian@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {The CarTALK 2000 project aims at the development of new driver assistance systems that are based upon inter-vehicle communication. To this purpose, a mobile ad hoc network (MANET) consisting of vehicles will be developed as the communication platform to support co-operative driver assistance applications. Routing in such a vehicular MANET faces a number of new challenges, in particular due to the extremely dynamic network topology and a large variable number of mobile nodes. Therefore, an efficient and scalable ad hoc routing mechanism is crucial for the performance of the CarTALK 2000 communication system. After analyzing the system characteristics and requirements, this paper introduces a spatially aware routing protocol and a distributed location service. The key of Spatially Aware Routing is to improve position-based routing performance by integrating spatial environment information into routing, such as the underlying road topology.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-08&engl=0}
}
@inproceedings {INPROC-2003-07,
   author = {Kurt Rothermel and Martin Bauer and Christian Becker},
   title = {{Digitale Weltmodelle - Grundlage kontextbezogener Systeme}},
   booktitle = {Total vernetzt - Szenarien einer informatisierten Welt},
   editor = {Friedemann Mattern},
   address = {Berlin, Heiderlberg, New York},
   publisher = {Springer-Verlag},
   institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
   series = {Xpert.press},
   pages = {123--141},
   type = {Konferenz-Beitrag},
   month = {Mai},
   year = {2003},
   isbn = {3-540-0023-8},
   keywords = {Kontext; kontextbezogene Systeme; Ubiquitous Computing; Nexus},
   language = {Deutsch},
   cr-category = {H.3.4 Information Storage and Retrieval Systems and Software},
   ee = {http://www.nexus.uni-stuttgart.de},
   contact = {E-Mail: Kurt.Rothermel@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Die rasant fortschreitende Entwicklung von Sensorsystemen und drahtloser Kommunikation f{\"u}hrt zu multifunktionalen mobilen Endger{\"a}ten, die in der Lage sind, Kontextinformation zu erfassen, zu verarbeiten und zu kommunizieren. Durch die extreme Miniaturisierung eingebetteter Systeme entstehen au{\ss}erdem ``intelligente'' Alltagsgegenst{\"a}nde, die in Netzwerke eingebunden sind und {\"u}ber sensorische F{\"a}higkeiten verf{\"u}gen. Vor dem Hintergrund dieser Entwicklungen ist es absehbar, dass in wenigen Jahren Milliarden von Sensoren existieren werden, die kontinuierlich den Zustand der Realwelt erfassen und kommunizieren. F{\"u}hrt man die sensorisch gewonnen Informationen in einem r{\"a}umlichen Modell zusammen, so entsteht ein digitales Abbild der Realwelt, also ein digitales Weltmodell, das analog zum heutigen Web einen globalen Informationsraum darstellt. Das digitale Weltmodell kann Grundlage sein f{\"u}r ein breites Spektrum kontextbezogener Anwendungen, deren Kontext prinzipiell keinen r{\"a}umlichen Beschr{\"a}nkungen unterworfen ist. In diesem Beitrag wird der Begriff der kontextbezogene Anwendungen erl{\"a}utert und Anwendungen dieser Art am Beispiel existierender Systeme beschrieben und klassifiziert. Au{\ss}erdem wird die Vision, Kontextinformationen in Form digitaler Weltmodelle zu verwalten, dargelegt und motiviert. Schlie{\ss}lich werden die sich aus dieser Vision ergebenden wissenschaftlichen Fragestellungen diskutiert.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-07&engl=0}
}
@inproceedings {INPROC-2003-06,
   author = {J{\"o}rg H{\"a}hner and Christian Becker and Kurt Rothermel},
   title = {{A Protocol for Data Dissemination in Frequently Partitioned Mobile Ad Hoc Networks}},
   booktitle = {Proceedings of the Eighth IEEE Symposium on Computers and Communications (ISCC 2003). Vol. I},
   editor = {Ahmed Tantawy and Kemal Inan},
   address = {Los Alamitos},
   publisher = {IEEE Computer Society},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {633--640},
   type = {Konferenz-Beitrag},
   month = {Juni},
   year = {2003},
   isbn = {0-7695-1961-X},
   language = {Englisch},
   cr-category = {C.2.1 Network Architecture and Design},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2003-06/INPROC-2003-06.pdf},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Distribution of data in mobile ad hoc networks is challenged when the mobility of nodes leads to frequent topology changes. Existing approaches so far address either the network partitioning problem or are capable of handling large amounts of data, but not both at the same time. In this paper a novel approach is presented which is based on a negotiation scheme enhanced by an adaptive repetition strategy. Different strategies for the selection of repeated data are presented and evaluated. Simulation results show a reduction of data transfer volume compared to hyper-flooding by 30 to 40\% even in the presence of frequent network partitions.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-06&engl=0}
}
@inproceedings {INPROC-2003-05,
   author = {Cora Burger and Matthias Papesch},
   title = {{Eine interaktive und kollaborative Selbstlernumgebung f{\"u}r den Bereich der Sicherheitsprotokolle}},
   booktitle = {Tagungsband der 1. e-Learning Fachtagung Informatik der Gesellschaft f{\"u}r Informatik e.V., DeLFI 2003},
   editor = {Sabine Rathmayer Arndt Bode},
   publisher = {GI Edition „Lecture Notes in Informatics“},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   type = {Konferenz-Beitrag},
   month = {September},
   year = {2003},
   keywords = {E-Learning; Security Protocols; Validation},
   language = {Deutsch},
   cr-category = {D.2.4 Software Engineering Software/Program Verification,     I.6.7 Simulation Support Systems,     K.3.1 Computer Uses in Education},
   ee = {http://www.informatik.uni-stuttgart.de/ipvr/vs/de/projects/index.html#ito,     http://www.delfi2003.de},
   contact = {caburger@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Im Bereich Verteilter Systeme und Rechnernetze spielen Sicherheitsprotokolle zum Schutz von Identit{\"a}t und anderweitigen Ressourcen einzelner Personen eine wichtige Rolle. Um die Verst{\"a}ndlichkeit dieser komplexen Materie in der Lehre zu erh{\"o}hen und f{\"u}r dieses Gebiet ein von Ort und Zeit unabh{\"a}ngiges Lernen zu erm{\"o}glichen, entstand eine speziell darauf ausgelegte Selbstlernumgebung. Sie verbindet vielf{\"a}ltige Funktionen f{\"u}r ein exploratives Vorgehen sowie automatisiert auswertbare Selbsttests zur Lernkontrolle mit der M{\"o}glichkeit der gemeinsamen Erarbeitung von Inhalten im Lernteam.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-05&engl=0}
}
@article {ART-2003-04,
   author = {Kurt Rothermel and Martin Bauer and Christian Becker},
   title = {{SFB 627 - ``Nexus'' Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme}},
   journal = {it - Information Technology},
   editor = {Paul Molitor and Klaus K{\"u}spert and Kurt Rothermel},
   address = {M{\"u}nchen},
   publisher = {Oldenbourg Wissenschaftsverlag GmbH},
   volume = {45},
   number = {5},
   pages = {293--300},
   type = {Artikel in Zeitschrift},
   month = {Oktober},
   year = {2003},
   keywords = {ubiquitous computing; spatial world models; Umgebungsmodelle; context-awareness; kontext-bezogene Systeme; Nexus},
   language = {Deutsch},
   cr-category = {C.2.4 Distributed Systems,     H.2.4 Database Management Systems,     H.2.8 Database Applications,     H.3.4 Information Storage and Retrieval Systems and Software},
   ee = {http://www.nexus.uni-stuttgart.de},
   contact = {kurt.rothermel@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme},
   abstract = {Die Entwicklungen im Bereich der Sensortechnologie erlauben eine zunehmende Miniaturisierung von Sensorplattformen. Diese k{\"o}nnen in Alltagsgegenst{\"a}nde integriert werden und Umgebungsinformationen durch drahtlose Kommunikation bereitstellen. F{\"u}hrt man die erfassten Sensordaten zusammen und ordnet diese Informationen Orten in r{\"a}umlichen Modellen zu, entstehen Umgebungsmodelle. Die Erforschung von Methoden und Verfahren f{\"u}r die Erstellung, das Management und die Nutzung der F{\"o}deration solcher Umgebungsmodelle ist Ziel des Sonderforschungsbereichs 627 an der Universit{\"a}t Stuttgart.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2003-04&engl=0}
}
 
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