Logical failures occurring during workflow execution require the dynamic adaptation of affected workflows. The consequences such a dynamic adaptation may have for collaborating workflows have not yet been investigated sufficiently. We propose a rule-based approach for dynamic workflow adaptation to deal with logical failures. In our approach, workflow collaboration is based on agreements specif...

Gathering and understanding user requirements is an essential part of design. Techniques like affinity diagramming are useful for gathering and understanding user data but have shortcomings such as the difficulty to preserve the diagram after its creation, problems during the process such as searching for notes, and loss of shared awareness. We propose an early prototype that solves problems in...

Today, learners on the move are typically disconnected from their learning environment and from other learning partners. With the advances in mobile communication, we envision distributed and mobile learners to be seamlessly connected to learning sessions and learning content. Connection should be supported in an ad-hoc fashion, if applicable, and during mobility [1]. Mobile learners are usuall...

Many real life applications such as tracking of pollutant flows, studying plankton populations in lakes, monitoring ocean currents etc. require real-time detection and tracking of level sets in a dynamic(spatio-temporal) field. In this paper, we examine the problem of estimating a level set or a contour of a particular value within a bounded region of varying field values using a network of mob...