This book constitutes the combined proceedings of the second working conference on Human-Centred Software Engineering (HCSE 2008) and the 6th International Workshop on TAsk MOdels and DIAgrams (TAMODIA 2008); jointly held as EIS 2008, the international event on Engineering Interactive Systems, in Pisa, Italy, in September 2008.

Keynote.- Tasks = Data + Action + Context: Automated Task Assistance through Data-Oriented Analysis.- TAMODIA Long Papers.- Assessment of Object Use for Task Modeling.- Task Model-Based Usability Evaluation for Smart Environments.- From Task to Agent-Oriented Meta-models, and Back Again.- Steps in Identifying Interaction Design Patterns for Multimodal Systems.- Information Supply Mechanisms in Ubiquitous Computing, Crisis Management and Workflow Modelling.- A Method for Modeling Interactions on Task Representations in Business Task Management Systems.- AMBOSS: A Task Modeling Approach for Safety-Critical Systems.- TAMODIA Short Papers.- UI Design without a Task Modeling Language - Using BPMN and Diamodl for Task Modeling and Dialog Design.- Task-Based Development Methodology for Collaborative Environments.- An Event-Condition-Action Approach for Contextual Interaction in Virtual Environments.- Automated Usability Evaluation during Model-Based Interactive System Development.- Integrating Groupware Notations with UML.- HCSE Long Papers.- MuiCSer: A Process Framework for Multi-disciplinary User-Centred Software Engineering Processes.- A Fluid Flow Approach to Usability Analysis of Multi-user Systems.- Task-Driven Plasticity: One Step Forward with UbiDraw.- HCSE Short Papers.- The Guilet Dialog Model and Dialog Core for Graphical User Interfaces.- An Ontology-Based Adaptation Framework for Multimodal Interactive Systems.- Some Thoughts about the Horizontal Development of Software Engineers.- Involving End Users in Distributed Requirements Engineering.- Concepts for Analysis and Design of Mobile Healthcare Applications.- ShaMAN: An Agent Meta-model for Computer Games.- A Study on Appropriate Plant Diagram Synthesis for User-Suited HMI in Operating Control.- Preserving RichUser Interface State in Web Applications across Various Platforms.- From Desktop to Tabletop: Migrating the User Interface of AgilePlanner.- Learning Key Contexts of Use in the Wild for Driving Plastic User Interfaces Engineering.- The Ecology of Participants in Co-evolving Socio-technical Environments.- Demonstrations.- User Interface Migration between Mobile Devices and Digital TV.- Demonstration of Software Components for End-User Development.- Transactions in Task Models.