This volume constitutes the proceedings of the 11th International Workshop on Groupware (CRIWG 2005). The conference was held in Porto de Galinhas (Recife), Brazil. The previous ten CRIWG workshops were organized in Lisbon, Portugal (1995), Puerto Varas, Chile (1996), El Escorial, Spain (1997), Buzios, Brazil (1998), Cancun, Mexico (1999), Madeira, Portugal (2000), Darmstadt, Germany(2001),La Serena,Chile (2002),Autrans, France(2003),and San C- los, Costa Rica (2004). CRIWG workshops follow a simple recipe for success: good papers, a relatively small number of attendees, extensive time for lively and constructive discussions, and a high level of cooperation both within and between paper sessions. CRIWG 2005 continued this tradition. This 11th CRIWG exempli?ed the continuing interest in the groupware - searcharea.Groupwareresearchersfrom 16 di?erent countriessubmitted a total of67papers.Eachofthe67paperswasreviewedbyatleastthreemembersofan internationally renowned Program Committee, using a double-blind reviewing process. Based on the reviewers recommendations 29 papers were ?nally - cepted: 16 long papers presenting mature work, and 13 short papers describing workinprogress.Theacceptedpapersweregroupedinto8themesthatrepresent current areas of interest in groupware research: groupware development, coll- orative applications, work?owmanagement, knowledge management, comput- supported collaborativelearning,groupdecision support systems,mobile coll- orativework,andworkmodeling inCSCW. In addition,wewerepleasedto have Gerry Stahl from Drexel University in Philadelphia, USA, a renowned specialist in CSCL, as keynote speaker.

Inhalt
Opening Keynote.- Groups, Group Cognition and Groupware.- Groupware Development.- A Framework for Prototyping Collaborative Virtual Environments.- Adaptive Distribution Support for Co-authored Documents on the Web.- Agilo: A Highly Flexible Groupware Framework.- Autonomous and Self-sufficient Groups: Ad Hoc Collaborative Environments.- Empowering End-Users: A Pattern-Centered Groupware Development Process.- Integrating Synchronous and Asynchronous Interactions in Groupware Applications.- Collaborative Applications.- An Architectural Model for Component Groupware.- An Architecture for Collaborative Geomodeling.- Remote Control Point Motion Prediction in Internet-Based Real-Time Collaborative Graphics Editing Systems.- Synchronization Contexts as a Means to Support Collaborative Modeling.- Tailoring Infrastructures: Supporting Cooperative Work with Configurable Email Filters.- Workflow Management.- A Collaborative Framework for Unexpected Exception Handling.- A Workflow Mining Method Through Model Rewriting.- Design of an Object-Oriented Workflow Management System with Reusable and Fine-Grained Components.- Modeling the Behavior of Dispatching Rules in Workflow Systems: A Statistical Approach.- Knowledge Management.- Collective Knowledge Recall: Benefits and Drawbacks.- Developing Shared Context Within Group Stories.- Patterns of Collaboration and Non-collaboration Among Physicians.- Shared Knowledge: The Result of Negotiation in Non-hierarchical Environments.- Computer Supported Collaborative Learning.- A Mediation Model for Large Group Collaborative Teaching.- Analyzing the Organization of Collaborative Math Problem-Solving in Online Chats Using Statistics and Conversation Analysis.- Collaboration for Learning Language Skills.- Group Decision Support Systems.- Collaborative IS Decision-Making: Analyzing Decision Process Characteristics and Technology Support.- Software Requirements Negotiation Using the Software Quality Function Deployment.- The Design and Field Evaluation of a Repeatable Collaborative Software Code Inspection Process.- Mobile Collaborative Work.- Handheld-Based Electronic Meeting Support.- Sharing Information Resources in Mobile Ad-hoc Networks.- Work Modeling in CSCW.- Towards a Model of Cooperation.- Towards an Ontology for Context Representation in Groupware.