@inproceedings {INPROC-1999-30, author = {Hermann Ludwig M{\"o}ller and Marcello Mariucci and Bernhard Mitschang}, title = {{Architecture Considerations for Advanced Earth Observation Application Systems}}, booktitle = {Proceedings of the Second International Conference on Interoperating Geographic Information System: Interop '99; Zurich, Switzerland, March 10-12, 1999}, editor = {Andrej V{\`e}kovski and Brassel Kurt E. and Schek Hans-J{\"o}rg}, address = {Berlin, Heidelberg, New York, Barcelona, Hong Kong, London, Milan, Paris, Singapore}, publisher = {Springer-Verlag}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, series = {Lecture Notes in Computer Science}, volume = {1580}, pages = {75--90}, type = {Conference Paper}, month = {March}, year = {1999}, isbn = {3-540-65725-8}, keywords = {Distributed Information Systems; Earth Observation Systems; Applications; Interoperability; Middleware; CORBA}, language = {English}, cr-category = {H.2 Database Management, H.4 Information Systems Applications, J.2 Physical Sciences and Engineering, E.1 Data Structures}, ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-1999-30/INPROC-1999-30.pdf, ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-1999-30/INPROC-1999-30.ps}, contact = {Please send an email to mariucci@informatik.uni-stuttgart.de}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {Application systems in the earth observation area can be characterised as distributed, platform-inhomogeneous, complex, and cost intensive information systems. In order to manage the complexity and performance requirements set by these application scenarios a number of architectural considerations have to be applied. Among others the most important ones are modularization towards a component architecture and interoperation within this component model. As will be described in this paper, both are mandatory to achieving a high degree of reusability and extensibility at the component level as well as to support the necessary scalability properties. In our paper we refer to the state of the art in earth observation application systems as well as to a prototype system that reflects to a high degree the above mentioned system characteristics.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-30&engl=1} } @inproceedings {INPROC-1999-28, author = {Aiko Frank}, title = {{Towards an Activity Model for Design Applications}}, booktitle = {Proceedings of the 14th Int'l. Conference April 7-9, 1999, Cancun, Mexico}, editor = {R. Y. Lee}, publisher = {ISCA}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, pages = {1--10}, type = {Conference Paper}, month = {April}, year = {1999}, isbn = {1-880843-27-7}, language = {English}, cr-category = {H Information Systems}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {Towards an Activity Model for Design Applications.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-28&engl=1} } @inproceedings {INPROC-1999-27, author = {J{\"u}rgen Sellentin and Aiko Frank and Bernhard Mitschang}, title = {{TOGA -- A Customizable Service for Data-Centric Collaboration}}, booktitle = {Proceedings of the 11th Conference on Advanced Information Systems Engineering (CAiSE*99)}, editor = {Matthias Jarke and Andreas Oberweis}, publisher = {Springer}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, series = {Lecture Notes in Computer Science}, volume = {1626}, pages = {301--316}, type = {Conference Paper}, month = {June}, year = {1999}, isbn = {3-540-66157-3}, language = {English}, cr-category = {H.2 Database Management}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {TOGA -- A Customizable Service for Data-Centric Collaboration.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-27&engl=1} } @inproceedings {INPROC-1999-26, author = {J{\"u}rgen Sellentin and Berhard Mitschang}, title = {{Design and Implementation of a CORBA Query Service Accessing EXPRESS-based Data}}, booktitle = {The 6th International Conference on Database Systems for Advanced Applications (DASFAA), Hsinchu, Taiwan, April 19-21, 1999}, publisher = {IEEE}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, pages = {273--282}, type = {Conference Paper}, month = {April}, year = {1999}, keywords = {EXPRESS, CORBA}, language = {English}, cr-category = {H.2.4 Database Management Systems, J.6 Computer-Aided Engineering}, ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-1999-26/INPROC-1999-26.pdf}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {In this paper we describe the design and implementation of a CORBA Query Service targeted to access data that is defined by the EXPRESS data modeling language. EXPRESS is used primarily in engineering domains (like CAD/CAM and GIS) to describe mostly product model data (like parts explosion or product geometry). In order to bring query facilities for EXPRESS-based data to CORBA a number of design decisions have to be taken, although the CORBA Query Service is standardized by the OMG. Among the most important and performance-indicating decisions are the definition of an appropriate query language and the description of the query result data structures. In this paper we discuss solutions to these topics and report on the experiences gained in designing and implementing our first CORBA Query Service for EXPRESS-based Data.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-26&engl=1} } @inproceedings {INPROC-1999-25, author = {Stefan Sarstedt and G{\"u}nter Sauter and J{\"u}rgen Sellentin and Bernhard Mitschang}, title = {{Integrationskonzepte f{\"u}r heterogene Anwendungssysteme bei DaimlerChrysler auf Basis internationaler Standards}}, booktitle = {Datenbanksysteme in B{\"u}ro, Technik und Wissenschaft, GI-Fachtagung BTW 99, Freiburg im Breisgau, 1.-3. M{\"a}rz 1999}, editor = {A. Buchmann}, address = {Berlin, Heidelberg, New York}, publisher = {Springer}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, series = {Informatik aktuell}, pages = {317--327}, type = {Conference Paper}, month = {March}, year = {1999}, isbn = {3-540-65606-5}, keywords = {Funktionsintegration; API-Integration; Heterogenit{\"a}t; STEP; CORBA}, language = {German}, cr-category = {H.2.5 Heterogeneous Databases}, ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-1999-25/INPROC-1999-25.pdf}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {Aufbauend auf den Anforderungen von DaimlerChrysler und unter Verwendung der Standards STEP und CORBA wird eine Architektur und Vorgehensweise f{\"u}r die Integration von Daten und Funktionen heterogener Anwendndungssysteme entwickelt. Die eingebrachten Systemkonzepte sowie die dadurch zu erwartende Optimierung des Entwicklungsprozesses werden am Beispiel des Bereichs PKW-Entwicklung diskutiert.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-25&engl=1} } @inproceedings {INPROC-1999-24, author = {Michael Jaedicke and Bernhard Mitschang}, title = {{User-Defined Table Operators: Enhancing Extensibility for ORDBMS}}, booktitle = {VLDB'99, Proceedings of 25th International Conference on Very Large Data Bases, Edinburgh, Scotland, UK, September 7-10, 1999}, publisher = {Morgan Kaufmann}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, pages = {494--505}, type = {Conference Paper}, month = {May}, year = {1999}, isbn = {1-55860-615-7}, language = {English}, cr-category = {H.2.4 Database Management Systems}, ee = {http://www3.informatik.tu-muenchen.de/public/projekte/sfb342/publications/99.SFB-Bericht.Multiop.ps.gz}, contact = {Bernhard Mitschang mitsch@informatik.uni-stuttgart.de}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {Currently parallel object-relational database technology is setting the direction for the future of data management. A central enhancement of object-relational database technology is the possibility to execute arbitrary user-defined functions within SQL statements. We show the limits of this approach and propose user-defined table operators as a new concept that allows the definition and implementation of arbitrary user-defined N-ary database operators, which can be programmed using SQL or Embedded SQL (with some extensions). Our approach leads to a new dimension of extensibility that allows to push more application code into the server with full support for efficient execution and parallel processing. Furthermore it allows performance enhancements of orders of magnitude for the evaluation of many queries with complex user-defined functions as we show for two concrete examples. Finally, our implementation perception guarantees that this approach fits well into the architectures of commercial object-relational database management systems.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-24&engl=1} } @inproceedings {INPROC-1999-01, author = {Ralf Rantzau and Holger Schwarz}, title = {{A Multi-Tier Architecture for High-Performance Data Mining}}, booktitle = {Proceedings of the Conference Datenbanksysteme in B{\"u}ro, Technik und Wissenschaft (BTW 1999), Freiburg, Germany, March 1999}, editor = {A. P. Buchmann}, address = {Berlin, Heidelberg, New York}, publisher = {Springer}, institution = {University of Stuttgart, Faculty of Computer Science, Germany}, series = {Informatik aktuell}, pages = {151--163}, type = {Conference Paper}, month = {March}, year = {1999}, isbn = {3-540-65606-5}, language = {English}, cr-category = {H.2.8 Database Applications}, ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-1999-01/INPROC-1999-01.ps, ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-1999-01/INPROC-1999-01.pdf}, contact = {rrantzau@acm.org}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {Data mining has been recognised as an essential element of decision support, which has increasingly become a focus of the database industry. Like all computationally expensive data analysis applications, for example Online Analytical Processing (OLAP), performance is a key factor for usefulness and acceptance in business. In the course of the CRITIKAL project (Client-Server Rule Induction Technology for Industrial Knowledge Acquisition from Large Databases), which is funded by the European Commission, several kinds of architectures for data mining were evaluated with a strong focus on high performance. Specifically, the data mining techniques association rule discovery and decision tree induction were implemented into a prototype. We present the architecture developed by the CRITIKAL consortium and compare it to alternative architectures.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-1999-01&engl=1} } @article {ART-1999-03, author = {J{\"u}rgen Sellentin and Bernhard Mitschang}, title = {{Data-Intensive Intra- and Internet Applications: Experiences using Java and Corba in the World Wide Web}}, journal = {Object-oriented technology in advanced applications}, editor = {E. Bertino and S. Urban}, address = {New York}, publisher = {John Wiley}, volume = {5}, number = {3}, pages = {181--197}, type = {Article in Journal}, month = {October}, year = {1999}, language = {English}, cr-category = {H.2.4 Database Management Systems, H.3.5 Online Information Services}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {Data-Intensive Intra- and Internet Applications: Experiences using Java and Corba in the World Wide Web.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-1999-03&engl=1} } @article {ART-1999-02, author = {Reiner Siebert}, title = {{An Open Architecture for Adaptive Workflow Management Systems}}, journal = {Transactions of the SDPS: Journal of Integrated Design and Process Science, 1999}, editor = {Society for Design and Process Science}, address = {Austin, Texas}, publisher = {Society for Design and Process Science}, pages = {1--9}, type = {Article in Journal}, month = {January}, year = {1999}, keywords = {Workflow Management; Adaptive Workflow Systems; Enterprise Process Management; Cooperative Work}, language = {English}, cr-category = {H.4.1 Office Automation}, ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/ART-1999-02/ART-1999-02.pdf}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems}, abstract = {One of the main tasks of workflow management systems is the coordination of activities in business processes. In this paper, a solution framework is introduced to support adaptive workflows with complex and unstructured task dependencies. In chapter one the research direction is motivated and a short overview of the PoliFlow project is given. Then, requirements for enterprise process management systems are identified with a special focus on coordination and control of unstructured processes. Taking these requirements as a basis, an integrated approach for adaptive workflow support is presented. A flexible workflow model including advanced control structures allows actors to modify workflow instances during runtime. Finally, a reference architecture is proposed. By example of the SWATS system, it is illustrated how an adaptive support layer can be integrated to extend existing workflow management systems. The paper concludes with an overview over the current state of the work and future issues.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-1999-02&engl=1} } @article {ART-1999-01, author = {Wolfgang Becker and Cora Burger and J{\"u}rgen Klarmann and Ottokar Kulendik and Frank Schiele and Kerstin Schneider}, title = {{Rechnerunterst{\"u}tzung f{\"u}r Interaktionen zwischen Menschen: Begriffskl{\"a}rung, Anwendungsgebiete und Basiswerkzeuge.}}, journal = {Informatik Spektrum}, publisher = {Springer-Verlag}, volume = {22}, number = {6}, pages = {422--435}, type = {Article in Journal}, month = {December}, year = {1999}, keywords = {CSCW, Groupware, Teleteaching, Workflow-Management, Elektronischer Handel}, language = {German}, cr-category = {H.4.3 Information Systems Applications Communications Applications}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems; University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Distributed Systems}, abstract = {Die Rechnerunterst{\"u}tzung von Interaktionen zwischen Menschen wird in unterschiedlichen Forschungsgebieten untersucht. Das f{\"u}hrt zu einer vielf{\"a}ltigen, {\"u}berlappenden Begriffsbildung unter den Disziplinen. Die dadurch bedingte Begriffsverwirrung behindert fach{\"u}bergreifende gemeinsame Entwicklung, Standardisierung und Wieder- / Weiterverwendung von Ergebnissen. Im folgenden werden daher breit verwendete Grundbegriffe wie CSCW, Kooperation, Konkurrenz, Koordination, Kommunikation, Groupware, Workflow-Management, Teleteaching und Elektronischer Markt geeignet geordnet. Schwerpunkte liegen dabei auf den m{\"o}glichen Anwendungsgebieten sowie auf den durch Rechner unterst{\"u}tzten technischen Grundinteraktionen. Damit soll der Beitrag Anwendern und Entwicklern helfen, f{\"u}r konkrete Anwendungsprobleme Anforderungen ermitteln zu k{\"o}nnen und Grundelemente in existierenden komplexen Systemen zu identifizieren.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-1999-01&engl=1} } @book {BOOK-1999-01, editor = {Kerstin Schneider}, title = {{Die Informatik AG - Telekooperation, 2., durchges. Aufl. 1999}}, publisher = {Teubner}, pages = {158}, type = {Book}, month = {January}, year = {1999}, isbn = {3-519-12194-8}, language = {German}, cr-category = {H Information Systems}, department = {University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems; University of Stuttgart, Institut f{\"u}r Parallele und Verteilte H{\"o}chstleistungsrechner}, abstract = {Das Bild der Informatik ist bei Jugendlichen von Ger{\"a}ten und konkreten Systemen gepr{\"a}gt. Dies schreckt junge Frauen davon ab, sich mit der Informatik zu befassen oder Informatik zu studieren. Soll dies korrigiert werden, so mu{\ss} man insbesondere den Sch{\"u}lerinnen ein zutreffendes Bild von den Inhalten undder Methodik der Informatik vermitteln. Aus diesem Grund werden seit 1977 an der Fakult{\"a}t Informatik der Universit{\"a}t Stuttgart Veranstaltungen f{\"u}r Sch{\"u}lerinnen der Oberstufe durchgef{\"u}hrt mit dem Ziel, diese {\"u}ber die Prinzipien, Vorgehensweisen und {\"u}ber das Studium der Informatik zu informieren. Das vorliegende Buch beschreibt die Konzepte und Inhalte der Veranstaltung Die Informatik AG - Telekooperation und enth{\"a}lt Auswertungen und Erfahrungen der AG. Eseignet sich einerseits als interessante Einf{\"u}hrung in die Grundlagen der Rechnernetze, das Internet und seine Dienste, insbesondere das WWW und elektronische Post, und soll andererseits als Vorlage zur Durchf{\"u}hrung {\"a}hnlicher Projekte im universit{\"a}ren und schulischen Bereich dienen. Zielgruppe sind Lehrer(innen) der Informatik und solche, die das Internet an Schulen einf{\"u}hren, Dozent(inn)en an Hochschulen, die {\"a}hnliche Kurse ausrichten und nat{\"u}rlich Sch{\"u}ler und Sch{\"u}lerinnen.}, url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=BOOK-1999-01&engl=1} }