EIS implementation research: an assessment and suggestions for the future, H. Barki. Changing the way the enterprise works - operational transformations, T.J. Greene. Enterprise ontology -understanding the essence of organizational operation, J.L.G. Dietz. Building successful interorganizational systems - IT and change management, M.L. Markus. Part 1 - Databases and information systems integration. The hybrid digital tree - a new indexing technique for large string databases, Q. Xue et al. Musical retrieval in P2P networks under the warping distance, I. Karydis et al. Change detection and maintenance of an XML web warehouse, C.-M. Chao. Choosing groupware tools and elicitation techniques according to stakeholders' features, G.N. Aranda et al. Analytical and experimental evaluation of stream-based join, H. Kostowski and K.T. Claypool. Part 2 - Artificial intelligence and decision support systems. Construction of decision trees using data cube, L. Fu. An application of non-linear programming to train recurrent neural networks in time series prediction problems, M.P. Cuéllar et al. Intelligent solution evaluation based on alternative user profiles, G. Bardis et al. Using DMFSQL for financial clustering, R.A. Carrasco et al. Knowledge management in non-governmental organisations: a partnership for the future, J. Braga de Vasconcelos et al. Towards a change-based chance discovery, Z. Wu and A.Y. Tawfik. Part 3 - Information systems analysis and specification. Early detection of cots functional suitability for an e-payment case study, A. Cechich and M. Piattini. Preserving the context of interrupted business process activities, S. Bassil et al. The "right to be let alone" and private information, S.S. Al-Fedaghi. Perspectives on process documentation - a case study, J. Becker et al. Sustainable development and investment in information technologies - a socio-economic analysis, M.J. Pereira et al. Quality of service in flexible workflows through process constraints, S. Sadiq et al. Real time detection of novel attacks by means of data mining techniques, M. Esposito et al. Part 4 - Software agents and internet computing. Generic fault-tolerant layer supporting publish/subscribe messaging in mobile agent systems, M. Tosic and A. Zaslavsky. Boosting item findability: bridging the semantic gap between search phrases and item information, H. Davulcu et al. Integrating agent technologies into enterprise systems using web services, E.H. Ramírez and R.F. Brena. Part 5 - Human-Computer Interaction. Opendpi: a toolkit for developing document-centered environments, O. Beaudoux and M. Beaudouin-Lafon. Why anthropomorphic user interface feedback can be effective and preferred by users, P. Murano. Distance learning by intelligent tutoring system. Part I: Agent-based architecture for user-centred adaptivity, A. Fernández-Caballero et al. A controlled experiment for measuring the usability of webapps using patterns, F. Javier García et al. Author index.