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CONFERENCE ORGANIZATION


ADBIS’ 2001 is organized by Vilnius Gediminas Technical University, Institute of Mathematics and Informatics, Lithuanian Computer Society in cooperation with Moscow ACM SIGMOD Chapter and Law University of Lithuania.

Supported by

The European Commission, Research DG, Human Potential Programme, High-Level Scientific Conferences (subject to contact),

Lithuanian Science and Studies State Foundation,

Microsoft Research Ltd.

General Chair

Edmundas Zavadskas, Vilnius Gediminas Technical University (Lithuania)

Program Committee Co-Chairs:

Albertas Caplinskas, Institute of Mathematics and Informatics (Lithuania)

Johann Eder, Klagenfurt University (Austria)

Programme Committee:

Suad Alagic, Wichita State University (USA)

Leopoldo Bertosi, Pontificia University of Cató­li­ca de Chile (Chile)

Juris Borzovs, Riga Information Technology Institute (Latvia)

Omran A. Bukhres, Purdue University (USA)

Wojciech Cellary, Poznan University of Economics (Poland)

Bohdan Czejdo, Loyola University (USA)

Hans-Dieter Ehrich, Braunschweig Technical University (Germany)

Heinz Frank, Klagenfurt University (Austria)

Remigijus Gustas, University of Karlstad (Sweden)

Tomas Hruska, Brno Technical University (Czech Republic)

Yoshiharu Ishikawa, University of Tsukuba (Japan)

Leonid Kalinichenko, Institute for Problems of Informatics, Russian Academy of Sciences (Russia)

Wolfgang Klas, University of Vienna, (Austria)

Matthias Klusch, German Research Center for Artificial Intelligence GmbH (Germany)

Mikhail Kogalovsky, Market Economy Institute, Russian Academy of Sciences (Russia)

Kalle Lyytinen, University of Jyvaskyla (Finland)

Yanis Manolopoulos, Aristotle University (Greece)

Michail Matskin, Norwegian University of Science and Technology (Norway)

Tomaz Mohoric, Lublijana University (Slovenia)

Tadeusz Morzy, Poznan University of Technology (Poland)

Pavol Navrat, Slovak University of Technology (Slovakia)

Nikolay Nikitchenko, Kijev University (Ukraina)

Boris Novikov, University of St.-Peterburg (Russia)

Maria Orlowska, The University of Queensland (Australia)

Euthimios Panagos, AT&T Research

Bronius Paradauskas, Kaunas University of Technology (Lithuania)

Oscar Pastor Lopez, Universidad Politecnica de Valencia (Spain)

Jaan Penjam, Tallinn Technical University (Estonia)

Guenther Pernul, University of Vienna (Austria)

Jaroslav Pokorny, Charles University (Czech Republic)

Henrikas Pranevicius, Kaunas University of Technology (Lithuania)

Colette Rolland, University of PARIS-1 Pantheon/Sorbonne (France)

Klaus-Dieter Schewe, Technical University Clausthal (Germany)

Timothy K. Shih, Tamkang University (Taiwan)

Julius Stuller, Institute of Computer Science, Academy of Sciences of the Chech Republic (Chech Republic)

Kazimierz Subieta, Polish Academy of Science (Poland)

Bernhard Thalheim, Cottbus Technical University ( Germany)

Aphrodite Tsalgatidou, University of Athens (Greece)

Enn Tyugu, Royal Institute of Technology (Sweden)

Gottfried Vossen, University of Muenster, (Germany)

Benkt Wangler, Stockholm University (Sweden)

Tatjana Welzer Druzoviec, Maribor University (Slovenia)

Viacheslav Wolfengagen, Moscow Engineering Physics Institute (Russia)

Vladimir I. Zadorozhny, UMIACS University of Maryland (USA)

Alexander V. Zamulin, Institute of Informatics Systems, Russian Academy of Sciences (Russia)

Organising Committee

Organising Chair

Olegas Vasilecas, Vilnius Gediminas Technical University (Lithuania)

Organising Vice-Chairs:

Rimantas Petrauskas, Lithuanian Law University (Lithuania)

Alfredas Otas, Lithuanian Computer Society (Lithuania)

Algimantas Ciucelis, Vilnius Gediminas Technical University (Lithuania)

Local Arrangement Chair

Petras Adomenas, Vilnius Gediminas Technical University (Lithuania)

Publishing Co-Chairs:

Dale Dzemydiene, Institute of Mathematics and Informatics, Lithuanian Law University (Lithuania)

Audrone Lupeikiene, Institute of Mathematics and Informatics (Lithuania)

Publicity Chair

Saulius Maskeliunas, Institute of Mathematics and Informatics (Lithuania)

Registration Chair

Milda Garmute, Vilnius Gediminas Technical University (Lithuania)

Registration Staff

Danute Burokiene, Institute of Mathematics and Informatics (Lithuania)

Audrius Klevas, Vilnius Gediminas Technical University (Lithuania)

Kristina Lapin, Vilnius University (Lithuania)

Aldona Zaldokiene, Institute of Mathematics and Informatics (Lithuania)

Social Events Co-Chairs:

Dale Dzemydiene, Institute of Mathematics and Informatics, Lithuanian Law University (Lithuania)

Arunas Ribikauskas, Vilnius Gediminas Technical University (Lithuania)

Conference System Administrator

Guenter Millahn, Branderburg University of Technology at Cottbus (Germany)

Web Master

Danute Vanseviciene, Institute of Mathematics and Informatics (Lithuania)
ADBIS Steering Committee Chair:

Leonid Kalinichenko, Russian Academy of Science (Russia)

ADBIS Steering Committee:

Andras Benczur (Hungary)

Rainer Manthey (Germany)

Radu Bercaru (Romania)

Tadeusz Morzy (Poland)

Albertas Caplinskas (Lithuania)

Pavol Navrat (Slovakia)

Johann Eder (Austria)

Boris Novikov (Russia)

Janis Eiduks (Latvia)

Jaroslav Pokorny (Czech Republic)

Hele-Mai Haav (Estonia)

Boris Rachev (Bulgaria)

Mirjana Ivanovic (Yugoslavia)

Anatoly Stogny (Ukraine)

Mikhail Kogalovsky (Russia)

Tatjana Welzer (Slovenia)

Yannis Manopoulos (Greece)

Viacheslav Wolfengagen (Russia)

Tuesday, September 25, 2001


9.00-10.30

Tutorial 1

Designing Enterprise Information Systems with UML


Leszek A. Maciaszek, Macquarie University (Australia)

10.30-11.00

Coffee break


11.00-12.30

Tutorial 1 (continuation)

Designing Enterprise Information Systems with UML


Leszek A. Maciaszek, Macquarie University (Australia)

12.30-14.30

Lunch

14.30-15.50

Tutorial 2

Data Mining Techniques and tools for information filtering

Michalis Vazirgiannis, Athens University of Economic and Business (Greece)

15.50-16.20

Coffee break

16.20-17.50

Tutorial 2 (continuation)

Data Mining Techniques and tools for information filtering

Michalis Vazirgiannis, Athens University of Economic and Business (Greece)

Social Programme

Tuesday, September 25, 2001



19.30

Welcome party


Wednesday, September 26, 2001


8.30-9.00

Opening Ceremony

9.00-10.30

Invited lecture 1


Ubiquitous Web Applications

Franca Garzotto, Politecnico di Milano (Italy)

10.30-11.00

Coffee break

Regular sessions


Session 1. Query Optimization

11.00-11.30

Query Optimization through Removing Dead Sub-queries

Jacek Plodzień, Institute of Computer Science, PAS (Poland)

Kazimierz Subieta, Polish-Japanese Institute of Information Technology (Poland)

11.30-12.00

The Impact of Buffering on Closest Pairs Queries Using R-trees

Antonio Corral, University of Almeria (Spain),

Michael Vassilakopoulos, Aristotle University (Greece),

Yannis Manolopoulos, University of Cyprus (Cyprus)

12.00-12.30

Enhancing an Extensible Query Optimizer with Support for Multiple Equivalence Types

Giedrius Slivinskas, Christian S. Jensen, Aalborg University (Denmark)

12.30-14.30

Lunch




Session 2. Multimedia and Multilingual Information Systems




11.00-11.30

Information Sources Re­gis­tra­tion at a Subject Mediator as Compositional Development

Dmitry O. Briukhov, Leonid A. Kalinichenko, Nikolay A. Skvortsov, Institute for Problems of Informatics, Russian Academy of Sciences (Russia)




11.30-12.00

Extracting Theme Melodies by Using a Graphical Clustering Algorithm for Content-based Music Information Retrieval

Yong-Kyoon Kang, Kyong-I Ku, Yoo-Sung Kim, INHA University (Korea)




12.00-12.30

Multilingual Information System Based on Knowledge Repre­sentation

Catherine Roussey, Sylvie Calabretto, Jean-Marie Pinon, LISI INSA de Lyon (France)




12.30-14.30

Lunch




Session 3. Portals optimization. Search machines

14.30-14.50

Optimization of Dynamic Internet Portal Content

Audrius Naslenas, Institute of Mathematics and Informatics (Lithuania)

14.50-15.10

Adaptive Incremental Framework for Performance-Driven Data Mining

Boštjan Brumen, Tatjana Welzer, University of Maribor (Slovenia),

Hannu Jaakkola, Tampere University of Technology (Finland)

15.10-15.30

A Probabilistic Model for an Internet Search Engine

Angel Kuri Morales, Instituto Politecnico Nacional (Mexico)

15.30-15.50

An Approach for Semi-Automatic Derivation of XSLT Information Based on DTD Descriptions

Martin Endig, Thomas Herstel, Eike Schallehn, Zoltan Sera, Otto-von-Guericke-University Magdeburg (Germany)

15.50-16.20

Coffee break



Session 4. Spatiotemporal Aspects of Databases

14.30-15.00

Capturing Fuzziness and Uncertainty of Spatiotemporal Objects

Dieter Pfoser, Nectaria Tryfona, Aalborg University (Denmark)

15.00-15.20

An Analysis of Consistency Properties in Existing Spatial and Spatiotemporal Data Models

Jose Antonio Cotelo Lema, University of Coruña (Spain)

15.20-15.50

Probability-based Tile Pre-fetching and Cache Replacement Algorithms for Web Geographical Information Systems

Yong-Kyoon Kang, Ki-Chang Kim, Yoo-Sung Kim, INHA University (Korea)

15.50-16.20

Coffee break



Session 5. Data Mining

16.20-16.50

Optimizing Pattern Queries for Web Access Logs


Tadeusz Morzy, Marek Wojciechowski, Maciej Zakrzewicz, Poznan University of Technology (Poland)

16.50-17.20

Ensemble Feature Selection Based on Contextual Merit and Correlation Heuristics

Seppo Puuronen, Iryna Skrypnyk, Alexey Tsymbal, University of Jyväskylä (Finland)

17.20-17.50

Interactive Constraint-Based Sequential Pattern Mining

Marek Wojciechowski, Poznan University of Technology (Poland)

Industrial Session 1

16.20-16.50

Keynote Talk from Microsoft

16.50-17.20

A Proposal for Requirements Engineering

Fumio Negoro, The Institute of Computer Based Software Methodology and Technology (Japan)

17.20-17.35

An Integrated Approach to Semantic-based Searching by Metadata over the Internet/Intranet

Maxim Grinev, Moscow State University (Russia)

Sergei Kuznetsov, Institute for System Programming, Russian Academy of Science (Russia)

17.35-17.50

A Survey of Concept-Based Information Retrieval Tools on the Web

Hele-Mai Haav, Tanel-Lauri Lubi, Institute of Cybernetics at Tallinn Technical University (Estonia)

17.50-18.05

On Software Development Export from Lithuania

Vytautas Cyras, Sintagma Sistemos, Vilnius University (Lithuania)

Social Programme

Wednesday, September 26, 2001

19.30

Concert

Thursday, September 27, 2001


Invited lecture 2

9.00-10.30

From Workflows to Service Composition in Virtual Enterprises

Marek Rusinkiewicz, Telcordia Technologies (USA)

10.30-11.00

Coffee break

Regular sessions


Session 6. Transaction Processing

11.00-11.30

Evaluation of a Broadcast Scheduling Algorithm

Murat Karakaya, Ozgur Ulusoy, Bilkent University (Turkey)

11.30-12.00

An Architecture for Workflows Interoperability Supporting Electronic Commerce

Vlad Ingar Wietrzyk, Vijay K. Khandelwal, University of Western Sydney (Australia)

Makoto Takizawa, Tokyo Denki University (Japan)

12.00-12.30

Object and Log Management in Temporal Log-Only Object Database Systems

Kjetil Norvåg, Norwegian University of Science and Technology (Norway)

12.30-14.30

Lunch



Session 7. Conceptual Modeling. Information systems specification

11.00-11.30

Operations for Conceptual Schema Manipulation: Definitions and Semantics

Helle L. Christensen, Mads L. Haslund, Henrik N. Nielsen, Nectaria Tryfona, Aalborg University (Denmark)

11.30-12.00

Object-Oriented Database as a Dynamic System with Implicit State

Kazem Lellahi, University of Paris, Institute Galilee (France)

Alexandre Zamulin, A.P. Ershov Institute of Informatics Systems, Siberian Division of Russian Academy of Sciences (Russia)

12.00-12.30

The Use of Aggregate and Z Formal Methods for Specification and Analysis of Distributed Systems

Henrikas Pranevicius, Kaunas University of Technology (Lithuania).

12.30-14.30

Lunch

Session 8. Active Databases. Information Systems Design

11.00-11.30

Detecting Termination of Active Database Rules Using Symbolic Model Checking

Indrakshi Ray, Indrajit Ray, University of Michigan-Dearborn (USA)

11.30-11.50

Improving Active Rules Termination Analysis by Graph Splitting

Alain Couchot, University Pierre and Marie Curie (France)

11.50-12.10

Towards Conceptual Multidimensional Design in Decision Support Systems

Olivier Teste, Paul Sabatier University (France)

12.10-12.30

Interoperable Services for Federations of Database Systems

Mark Roantree, Dublin City University (Ireland),

Jessie B. Kennedy, Peter J. Barclay, Napier University (Scotland

12.30-14.30

Lunch


14.30-15.00

Presentation of the Information System of Vilnius Gediminas Technical University


Jonas Daunoravicius, Vilnius Gediminas Technical University, (Lithuania)


Social Programme


Thursday, September 27, 2001

15.10

Trip to Trakai

Conference Dinner



Friday, September 28, 2001


Invited lecture 3

9.00-10.30

Subject-Oriented Work: Lessons Learned from an Inter Disciplinary Content Management Project


Joachim W. Schmidt, Hans-Werner Sehring, Michael Skusa, Axel Wienberg, Software Systems Institute,Technical University of Hamburg-Harburg (Germany)

10.30-11.00

Coffee break




Regular sessions


Session 9. Querying methods

11.00-11.30

A Data Model for Flexible Querying

Jaroslav Pokorny, Charles University Prague (Czech Republic)

Peter Vojtas, P. J. Šafarik University Košice, (Slovak Republic)

11.30-12.00

The Arc-Tree: A Novel Symmetric Access Method for Multi­dimen­sio­nal Data

Dimitris G. Kapopoulos, M. Hatzopoulos, University of Athens (Greece)

12.00-12.30

Evaluation of Join Strategies for Distributed Mediation

Vanja Josifovski, IBM Almaden Research Center (USA)

Timour Katchaounov, Tore Risch, Uppsala University (Sweden)

12.30-14.30

Lunch




Session 10. XML

11.00-11.30

A RMM-Based Methodology for Hypermedia Presentation Design

Flavius Frasincar, Geert-Jan Houben, Richard Vdovjak, Eindhoven University of Technology (Netherlands)

11.30-12.00

Efficiently Mapping Integrity Constraints from Relational Database to XML Document

Xiaochun Yang, Ge Yu, Guoren Wang, Northeastern University (China)

12.00-12.30

Web-based System for Handling Multidimensional Information through MXML

Manolis Gergatsoulis, Yannis Stavrakas, Dimitris Karteris, Athina Mouzaki, Dimitris Sterpis, Institute of Informatics & Telecom­mu­ni­cations, National Technical University of Athens (Greece)

12.30-14.30

Lunch




Session 11. Locking Systems

14.30-14.50

Database Concurrency Control on a Shared-Nothing Architecture Using Speculative Lock Modes

August Climent, Miquel Bertran, Miquel Nicolau, Ramon Llull University (Spain)

14.50-15.10

The Use of Contention-Based Scheduling for Improving the Throughput of Locking Systems

Samuel Kaspi, Victoria University (Australia)

15.10-15.30

Minimizing Overhead in Implicit Locking for Object-Oriented Databases

Woochun Jun, Seoul National University of Education (Korea)

15.30-15.50

Data Functional Feature Sets and their Adaptability

Petras Adomenas, Vilnius Gediminas Technical University (Lithuania)

15.50-16.20

Coffee break




Session 12. Temporal Information Systems. Reengineering of Legacy Systems

14.30-14.50

Temporal XML

Manuk G. Manukyan, Yerevan State University (Armenia),

Leonid A. Kalinichenko, Russian Academy of Sciences, Institute for Problems of Informatics (Russian)

14.50-15.10

Temporal Information Management and Decision Support for Predictive Control of Environment Contamination Processes

Dale Dzemydiene, Institute of Mathematics and Informatics, Law University of Lithuania (Lithuania)

15.10-15.30

Conflict Resolution in Flexible Environments

Panagiotis Chountas, Ilias Petrounias, Department of Computation, UMIST (United Kingdom)

15.30-15.50

Reengineering of Legacy Data and Knowledge for Electromyography Studies

Maria Bielikova, Pavol Navrat, Maria Smolarova, Slovak University of Technology (Slovakia)

15.50-16.20

Coffee break



Session 13. Information Systems Design

16.20-16.50

An Abstract Database Machine for Cost Driven Design of Object-Oriented Database Schemas

Joachim Biskup, Ralf Menzel, University of Dortmund (Germany)

16.50-17.10

Aggregation and Composition in Object-Relational Database Design

Esperanza Marcos, Belén Vela, José M Cavero, P. Caceres, University Rey Juan Carlos (Spain)

17.10-17.30

A Prediction Model for OO Information System Quality Based on Early Indicators

Marcela Genero, Luis Jiménez, Mario Piattini, University of Castilla-La Mancha (Spain)

17.30-17.50

The Approach for User Requirements Specification

Rita Butkiene, Rimantas Butleris, Kaunas University of Technology (Lithuania)



Industrial session 2

16.20-16.35

Unified Criminalistic Information System for Investigation of Crimes and Violations of Law

Egle Kazemikaitiene, Rimantas Petrauskas, Law University of Lithuania (Lithuania).

16.35-16.50

CC++: A Database Language Supporting the Development of Collaborative, Reusable Applications

Waldemar Wieczerzycki, The Poznan University of Economics (Poland)

16.50-17.05

TEMPTOOL: A Tool For Temporal Data Modelling

Eugenio de Oliveira Simonetto, Cristiano Ramos Moreira, Glauco B. Valim dos Santos, University of Regiao da Campanha

Duncan D. Alcoba Ruiz, Pontificia University Catolica do Rio Grande do Sul (Brasil)

17.05-17.20

An Approach for Solving Java Object Persistence Issues using RDBMS and other Data Sources

Adomas Svirskas, SAP Systems Integration AG (Germany)

Jurgita Sakalauskaite, Vilnius University (Lithuania)

17.20-17.35

On an Intelligent System for Medical Diagnosis Using Electrographic Images

Taisia Greceanu Stancovici, National Institut for R&D in Informatics (Romania)


18.00-19.30

Closing Ceremony

TUTORIALS

TUTORIAL 1

DESIGNING ENTERPRISE INFORMATION SYSTEMS

WITH UML


Leszek A. Maciaszek, Macquarie University (Australia)

About the author: The presenter is an Associate Professor of Computing at Macquarie University, Sydney, Australia. Originally from Poland, he has worked and consulted interchangeably in academia and industry in countries such as U.S.A., Kuwait, Germany and France. He moved to Australia in 1985. Leszek A. Maciaszek enjoys excellent reputation as a teacher and presenter of training courses to industry. He has an extensive consulting experience, frequently to large international corporations. His research has been in databases, object-oriented technology, software engineering, and development of large-scale business information systems. Leszek A. Maciaszek published over eighty publications, including a reference book "Database Design and Implementation" (Prentice Hall, 1990) and a textbook "Requirements Analysis and System Design. Developing Information Systems with UML" (Addison Wesley, 2001).
Short description

The system design encompasses two major issues: the architectural design and the detailed design. The architectural design involves layered organisation of classes and packages, assignment of processes to computing facilities, reuse and component management. The detailed design addresses collaboration models required for the realisation of system functionality captured in use cases.

In the tutorial, the presenter will identify ways to:


  • harness the complexity of large design models,

  • improve software architectures,

  • facilitate software readability, maintainability and scalability,

  • promote layered structuring of objects,

  • handle module and component integration,

  • model collaboration between GUI and persistent database objects,

  • conduct round-trip engineering with database, etc.


Topics

1. Underpinnings of System Design



    1. Software Architecture

    2. Collaboration

    3. Guided Tutorial in Design Modeling

2. User Interface Design

2.1 Interface Design as Multidisciplinary Activity

2.2 From Interface Prototype to Implementation

2.3 Guidelines for User-Centered Interface Design

2.4 Dependencies between Windows

2.5 Window Navigation

3. Database Design

3.1 Persistent Database Layer

3.2 Object Database Model

3.3 Object-Relational Database Model

3.4 Relational Database Model

4.Program and Transaction Design



    1. Designing the Program

    2. Program Navigation

    3. Designing the Transaction

    4. Round-Trip Engineering.



TUTORIAL 2

DATA MINING TECHNIQUES AND TOOLS FOR

INFORMATION FILTERING


Michalis Vazirgiannis

Athens University of Economics & Business (Greece)


About the author: Dr. Michalis Vazirgiannis acquired a Ph.D. degree in 1994 (Dept. of Informatics, U. Athens, Greece). The research area was Object Oriented modeling of Hypermedia Information Networks. Since then, he have conducted research in the Knowledge & DB Lab (Prof. T.Sellis group, N.T.U. Athens), in GMD-IPSI, Germany, in Fern University (Prof R.H.Gueting group in Hagen, Germany) and in project VERSO in INRIA/Paris. His research interests and work range from Interactive Multimedia Information Systems, to Spatiotemporal databases, Uncertainty and Data Mining. In 1997 he earned the position of Lecturer in "Database Systems" in the Dept. of Informatics of Athens University of Economic and Business, Greece.
Abstract:

The tutorial starts with an introduction on the fundamental concepts of data mining. Then we present techniques from the area of data pre-processing and cleaning, namely techniques for cleaning and maintaining the consistency of the data. An important topic covered is cluster analysis (unsupervised learning). Clustering aims at discovering groups and identifying interesting distributions and patterns in data sets and is applicable in many application domains in engineering and social sciences. We present a survey of clustering methods and approaches available in literature in a comparative way. Another important issue is the validity of the clustering schemes resulting from applying algorithms. This is also related to the inherent features of the data set under concern. We review and compare clustering validity measures available in the literature. We also present basic aspects of association rules extraction, on uncertainty handling and quality assessment in a data mining context. Furthermore, we present case studies from data mining in medical data and we address new research directions.


INVITED TALKS
UBIQUITOUS WEB APPLICATIONS
Franca Garzotto

HOC- Hypermedia Open Center

Department of Electronics and Information

Politecnico di Milano (Italy)


About the author: Franca Garzotto is research associate and professor of Fundamentals of Computing at the Department of Electronics and Information, Politecnico di Milano. She has a Degree in Mathematics from the University of Padova (Italy) and a Ph.D. in Computer Science from Politecnico di Milano. She has been active in the hypertext and multimedia since 1988. Her main reasearch interestes in these areas are: design models and methodologies, authoring tools, usability evaluation. She has been involved in various European research projects in the above fields. Franca Garzotto was tutorial chair of ECHT'90 and ECHT'92, and member of the program committee of the ACM Hypertext conference in 1991, '92, '93, '94, '96, '97, of the ACM Multimedia Conference in 1995 and 1996, of ICHIM in 1995 and 1997. She served as Program Chair of the International Workshop on "Hypermedia Design", held in Montpellier - France in June 1995 (in cooperation with ACM SIGLINK, INRIA, CWI, and GMD). She served as Co-Chair of the International Workshop on "Evaluation and Quality Criteria for Multimedia Applications", held at the ACM conference on multimedia - MM'95 - in S. Francisco - CA, November 1995.
Abstract:

Web sites are progressively evolving from brows able, read-only information repositories that exploit the web to interact with their users, to web-based applications, combining navigation and search capabilities with operations and transactions typical of information systems. In parallel, the possibility of accessing web-based contents and services through a number of different devices, ranging from full-fledged desktop computers, to Personal Digital Assistants (PDA's), to mobile phones, to set-top boxes connected to TV’s, makes web applications ubiquitous, i.e., accessible anywhere at any time.

Ubiquitous Web Applications (UWA's for short) reveal a number of aspects, which make them different with respect to conventional data-intensive applications, and must be taken into account throughout the whole application lifecycle, from requirements to implementation. UWA's are executed in a Web-based environment, where the paradigm for presenting and accessing information is hypermedia-like. Thus UWA’s have a mixed nature - hypermedia and transactional, where hypertext structures and operation capabilities are strongly intertwined. In addition, the ubiquitous nature of a UWA implies that the application has to take into account the different constraints of different devices, comprising display size, local storage size, method of input and computing speed as well as network capacity. At the same time, ubiquity introduces new requirements on how the application tunes itself to the end user: each user may wish to get information, navigation patterns, lay-out, and services, that are tailored not only to his/her specific profile but also to the current situation of use, in its temporal and environmental aspects. Thus Ubiquitous Web Applications must be at the same time device-aware, user-aware, and context-of-use-aware, and require sophisticate forms of customization.

After an analysis of the novel requirements of UWA's, this talk will focus on their impact on the design process, and will discuss problems and challenges related to modeling information and navigation structures, operations and transactions, and customization mechanisms for this class of applications.



FROM WORKFLOWS TO SERVICE COMPOSITION IN

VIRTUAL ENTERPRISES
Marek Rusinkiewicz

Information and Computer Science Research Laboratory

Telcordia Technologies
About the author: Professor Dr. Marek Rusinkewicz is a leading scientist in information systems and databases. He is the member of IFIP WG 6.2 Working Group on Databases and member of Editorial Boards of the International Journal on “Distributed and Parallel Databases”, "International Journal on Cooperative Information Systems", and "IEEE Transactions on Knowledge and Data Engineering".
Abstract:

Workflow technologies have been used extensively to support process-based integration of activities within enterprises and are at the core of emerging Enterprise Integration Platform (EIP) technologies. Recently, a new abstraction of electronic services has begun to receive a lot of attention among researchers and in the vendor community. Electronic services provide the basis for creation of virtual enterprises (VE), which combine services from multiple providers. In this talk, we will discuss the advances that are needed to provide support for VEs. These include the ability to advertise, broker, synchronize and optimize the services. We will discuss the infrastructure needed to support VE application, show a prototype demo, and list important research problems that need to be solved.


SUBJECT-ORIENTED WORK: LESSONS LEARNED FROM

AN INTER DISCIPLINARY CONTENT MANAGEMENT

PROJECT
Joachim W. Schmidt, Hans-Werner Sehring, Michael Skusa,

Axel Wienberg
Software Systems Institute, Technical University of

Hamburg-Harburg (Germany)



About the authors: After graduating from the University of Hamburg with a degree in physics and mathematics, J.W. Schmidt collaborated in the founding of the Department of Computer Science at that same university. From 1983 to 1989 he held a Professorship at the Johann Wolfgang Goethe-University in Frankfurt, in late 1989 he returned to Hamburg University. Sabbatical semesters were spent as a guest researcher in Toronto, Cambridge (USA), Washington, Paris, Rome and Pisa. The emphasis of his research and lecturing is devoted to databases, information systems, programming languages and transaction-oriented systems. J.W. Schmidt is co-founder of the Springer Series Topics in Information Systems as well as being a founding member of the conference series Extending Database Technology (EDBT). His editorial activities extend to journals such as Information Systems, Programming Languages, Data and Knowledge, Distributed Computing and the newly established VLDB Journal. Hans-Werner Sehring, Michael Skusa, Axel Wienberg are research assistants in Software Systems Institute.

Abstract:

Our interdisciplinary project "Warburg Electronic Library (WEL)" – Art History and Computer Science combined forces - uses as a test-bed application a large multimedia collection called "Index for Political Iconography (PI)".

The PI captures concepts from the "Political Space" through an extensive system of interrelated subject terms. Subject term and subject index are ontological concepts "regarding entities, especially abstract entities to be admitted into a language of description" [Webster] and are based on the semantic principles of aggregation, classification, generalization/specialization and association.

Since the semantics of subject terms is precisely what their class extensions contain, the main objective of subject-oriented work on PI-like systems is to carry subject term extensions „to their completion“. On the other hand, the notion of “completion“ depends on the view of the person or group who does the subject-oriented work and requires, therefore, personalized relationships between content and work.

In content management there is high interest in such "languages of description" and how people work with them:


  • what models and languages are required to make subject-oriented work more explicit?

  • what kind of support a digital library such as the WEL for subject-oriented work can provide?

  • what is the role of personalized and cooperating digital libraries?

  • to what extent do we already understand requirements and architectures of generic subject-oriented working environments?

  • and, as specifically emphasized in the PI: use of reference by icon, index, and symbol in subject-oriented work?

In this paper we discuss initial demands on models and environments for subject-oriented work and outline our WEL systems and application experience.

Our interdisciplinary research on subject-oriented work also puts our previous computer science research in polymorphic type systems, persistent language implementation, abstract machine architectures, models for migrating threads etc. into a new perspective and relates it to our commercial interests in online content management.



The map of Vilnius city




CONFERENCE VENUE
The Conference will be held at the Vilnius Gediminas Technical University (http://www.vtu.lt/english/vgtu/) in Vilnius, Lithuania.

Lithuania (http://neris.mii.lt/) is a small, beautiful country lying on the southeastern coast of the Baltic Sea and inhabited by one of the Baltic nations. The Lithuanians have preserved one of the oldest language, a unique culture and unique customs.

Vilnius (http://www.vilnius.sav.lt/tourism/) is the capital of Lithuania. It is a city that has to be explored. A day walking through the narrow, winding streets will give you a lot of impression. There is plenty to see. Masterpieces of local gothic, baroque and classicism, Gediminas Castle, folk art, museums, monuments of the former Soviet Empire, restful cafes, swinging bars, modern night clubs, handsome and imposing restaurants.

The largest Old Town in Eastern Europe gives you the feeling that you are walking through a museum, for practically every building is a relic of a sort. 27 km from Vilnius lays the ancient capital of Lithuania Trakai (http://www.tourism.lt/region/vilnius/trakai.htm). The Trakai Castle, an original relic of the Middle Ages, has survived on one of the islands on the Galve Lake to this day. 100 km from Vilnius lays the Lithuania's second largest city Kaunas (http://www.kaunas.lt/english/). There is a number of interesting museums, such as the Ciurlionis Museum with an exposition of more than 200 canvases by the great Lithuanian artist M.K. Ciurlionis, the exposition of folk "devil" sculptures, and the IXth Fort Museum, a memorial to the victims of fascism.



Contact Address

Milda Garmute

Registration Chair

Vilnius Gediminas Technical University

Sauletekio al. 11

Vilnius, LT-2600, Lithuania

Phone: +370 2 700495

8 287 88262



E-mail: adbis@ktl.mii.lt





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