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WEBIST 2008 Proceedings of the Fourth International Conference on Web Information Systems and Technologies Volume 1 Funchal, Madeira, Portugal May 4 7, 2008 Co-organized by INSTICC Institute for Systems and Technologies of Information, Control and Communication and UMA Universidade da Madeira Co-sponsored WfMC Workflow Management Coalition I Copyright © 2008 INSTICC Institute for Systems and Technologies of Information, Control and Communication All rights reserved Edited by José Cordeiro, Joaquim Filipe and Slimane Hammoudi Printed in Portugal ISBN: 978-989-8111-26-5 Depósito Legal: 271876/08 http://www.webist.org [email protected] II BRIEF CONTENTS INVITED SPEAKERS........................................................................................................................IV ORGANIZING AND STEERING COMMITTEES .................................................................................... V PROGRAM COMMITTEE .................................................................................................................VI AUXILIARY REVIEWERS ................................................................................................................IX SELECTED PAPERS BOOK ............................................................................................................... X FOREWORD....................................................................................................................................XI CONTENTS.................................................................................................................................. XIII III INVITED SPEAKERS Tony Shan Bank of America U.S.A. Leszek Maciaszek Macquarie University Australia Claudia Medeiros UNICAMP Brazil Marcin Paprzycki Systems Research Institute Polish Academy of Science Poland Rainer Unland University of Duisburg-Essen Germany Klaus Pohl University of Duisburg-Essen Germany IV ORGANIZING AND STEERING COMMITTEES CONFERENCE CHAIR Joaquim Filipe, INSTICC / Polytechnic Institute of Setúbal, Portugal PROGRAM CO-CHAIRS José Cordeiro, INSTICC / Polytechnic Institute of Setúbal, Portugal Slimane Hammoudi, E.S.E.O., France LOCAL ARRANGEMENTS Laura Rodriguez, University of Madeira (UMa), Portugal PROCEEDINGS PRODUCTION Andreia Costa, INSTICC, Portugal Bruno Encarnação, INSTICC, Portugal Helder Coelhas, INSTICC, Portugal Paulo Brito, INSTICC, Portugal Vera Coelho, INSTICC, Portugal Vera Rosário, INSTICC, Portugal Vitor Pedrosa, INSTICC, Portugal CD-ROM PRODUCTION Elton Mendes, INSTICC, Portugal Pedro Varela, INSTICC, Portugal WEBDESIGNER AND GRAPHICS PRODUCTION Marina Carvalho, INSTICC, Portugal SECRETARIAT AND WEBMASTER Bruno Encarnação, INSTICC, Portugal V PROGRAM COMMITTEE A. Y. Al-Zoubi, Princess Sumaya University for Alfredo Cuzzocrea, University of Calabria, Italy Technology, Jordan Vasilios Darlagiannis, EPFL, Switzerland Ajith Abraham, Norwegian University of Science and Technology, Norway Alessandro D'Atri, CeRSI - Luiss Guido Carli University, Italy Jacky Akoka, CNAM & INT, France Valeria de Antonellis, University of Brescia, Italy Abdullah Alghamdi, KSU, Saudi Arabia Sergio de Cesare, Brunel University, U.K. Rachid Anane, Coventry University, U.K. Steven Demurjian, The University of Connecticut, Margherita Antona, FORTH - ICS, Greece U.S.A. Grigoris Antoniou, FORTH-ICS, Greece Darina Dicheva, Winston-Salem State University, U.S.A. Elarbi Badidi, U.A.E University, U.A.E Y. Ding, University of Innsbruck, Austria Matteo Baldoni, Università degli Studi di Torino, Italy Juergen Dix, Clausthal University of Technology, Germany Denilson Barbosa, University of Calgary, Canada Josep Domingo-Ferrer, Rovira i Virgili University of Cristina Baroglio, Università di Torino, Italy Tarragona, Spain Bernhard Bauer, University of Augsburg, Germany Chyi-Ren Dow, Feng Chia University, Taiwan David Bell, Brunel University, U.K. Schahram Dustdar, Vienna University of Orlando Belo, University of Minho, Portugal Technology, Austria Bharat Bhargava, Purdue University, U.S.A. Barry Eaglestone, The University of Sheffield, U.K. Stefan Böttcher, University of Paderborn, Germany Atilla Elci, Eastern Mediterranean University, North Cyprus, Turkey Paolo Bouquet, University of Trento, Italy Opher Etzion, IBM, Israel Christos Bouras, University of Patras and RACTI, Greece Luis Ferreira Pires, University of Twente, The Netherlands Stephane Bressan, National University of Singapore, Singapore Josep-Lluis Ferrer-Gomila, Universitat de les Illes Balears, Spain Amy Bruckman, Georgia Tech, U.S.A. Filomena Ferrucci, University of Salerno, Italy Maria Claudia Buzzi, CNR - IIT, Italy Stefan Fischer, University of Luebeck, Germany Elena Calude, Massey University, IIMS, New Zealand Akira Fukuda, Kyushu University, Japan Nunzio Casalino, LUISS Guido Carli University, Giovanni Fulantelli, Italian National Research Italy Council - Institute for Educational Technology, Italy Maiga Chang, Athabasca University, Canada Martin Gaedke, University of Karlsruhe, Germany Evangelos Christou, University of the Aegean, Erich Gams, Salzburg Research, Austria Greece Daniel Garcia, Universidad de Oviedo, Spain Christophe Claramunt, Naval Academy Research Franca Garzotto, HOC-Politecnico di Milano, Italy Institute, France Dragan Gasevic, Athabasca University, Canada Isabelle Comyn-Wattiau, CNAM & ESSEC, France José A. Gil Salinas, Universidad Politécnica de Michel Crampes, Ecole des Mines d'Ales, France Valencia, Spain Alexandra Cristea, University of Warwick, U.K. Karl Goeschka, Vienna University of Technology, Daniel Cunliffe, University of Glamorgan, U.K. Austria VI PROGRAM COMMITTEE (CONT.) Anna Grabowska, Gdansk University of Technology, Hamamache Kheddouci, Université Claude Bernard Poland Lyon 1, France Begoña Gros, University of Barcelona, Spain Ralf Klamma, RWTH Aachen University, Germany Vic Grout, Centre for Applied Internet Research Tsvi Kuflik, The University of Haifa, Israel (CAIR), University of Wales, NEWI, U.K. Axel Küpper, Ludwig Maximilian University Francesco Guerra, Università di Modena e Reggio Munich, Germany Emilia, Italy Daniel Lemire, UQAM, Canada Aaron Gulliver, University of Victoria, Canada Tayeb Lemloma, IUT of Lannion, France Pål Halvorsen, University of Oslo, Norway Kin Fun Li, University of Victoria, Canada Ioannis Hatzilygeroudis, University of Patras, Greece Weigang Li, University of Brasilia, Brazil Stylianos Hatzipanagos, King's College, London, Leszek Lilien, Western Michigan University, U.S.A. U.K. Dominikus Heckmann, DFKI GmbH, Germany Claudia Linnhoff-Popien, Mobile and Distributed Systems Group, Institute for Informatics, Nicola Henze, Leibniz University Hannover, Germany Ludwig-Maximilians-Universität Munich, Germany Dominic Heutelbeck, FernUniversität in Hagen, Hui Liu, Missouri State University, U.S.A. Germany Ying Liu, Hong Kong Polytechnic University, China Pascal Hitzler, AIFB, University of Karlsruhe, Pascal Lorenz, University of Haute Alsace, France Germany Heiko Ludwig, IBM TJ Watson Research Center, Wen Shyong Hsieh, Stu Te University, National Sun U.S.A. Yat-sen University, Taiwan Brian Hudson, Umeå University, Sweden Vicente Luque-Centeno, Carlos III University of Madrid, Spain Tanko Ishaya, University of Hull, U.K. Anna Maddalena, DISI - University of Genoa, Italy Kai Jakobs, RWTH Aachen University, Germany George Magoulas, Birkbeck College, University of Anne James, Coventry University, U.K. London, U.K. Ivan Jelinek, Czech Technical University in Prague, Johannes Mayer, University of Augsburg, Germany Czech Republic Ingo Melzer, Daimler AG, Germany Jingwen Jin, Intel Corporation/Communications Elisabeth Metais, CNAM, CEDRIC Laboratory, Technology Lab, U.S.A. France Qun Jin, Waseda University, Japan Panagiotis Metaxas, Wellesley College, U.S.A. Carlos Juiz, University of Balearic Islands, Spain Alessandro Micarelli, Roma Tre University, Italy Michail Kalogiannakis, University Paris 5 - Rene Descartes - Laboratory: Education et Apprentissages Debajyoti Mukhopadhyay, Techno India (West (E.D.A.), France Bengal University of Technology), India Kia Ng, ICSRiM - University of Leeds, U.K. Jussi Kangasharju, University of Helsinki, Finland David Nichols, University of Waikato, New Zealand Vassilis Kapsalis, Industrial Systems Institute, Greece Andreas Ninck, Berne University of Applied George Karabatis, University of Maryland Baltimore Sciences, Switzerland County (UMBC), U.S.A. Frank Kargl, Ulm University, Germany Dusica Novakovic, London Metropolitan University, U.K. Roland Kaschek, Massey University, New Zealand Vladimir Oleshchuk, University of Agder, Norway Sokratis Katsikas, University of Piraeus, Greece VII PROGRAM COMMITTEE (CONT.) Andrea Omicini, Alma Mater Studiorum - Università Alexander Schill, TU Dresden, Germany di Bologna, Italy Jochen Seitz, Technische Universität Ilmenau, Kok-Leong Ong, Deakin University, Australia Germany Jose A. Onieva, Universidad de Málaga, Spain Tony Shan, Bank of America, U.S.A. Vasile Palade, Oxford University, U.K. Jamshid Shanbehzadeh, Tarbiat Moallem University, Iran Jun Pang, Oldenburg University, Germany Quan Z. Sheng, The University of Adelaide, Australia Kalpdrum Passi, Laurentian University, Canada Keng Siau, University of Nebraska-Lincoln, U.S.A. Viviana Patti, Università degli Studi di Torino, Italy Miguel-Angel Sicilia, University of Alcalá, Spain Guenther Pernul, University of Regensburg, Germany Marianna Sigala, University of the Aegean, Greece Rajesh Pillania, Institute for Emerging Markets, India Eva Söderström, University of Skövde, Sweden Carsten Pils,