A conceptual framework for understanding the needs and concerns of different stakeholders. Trust Requirements in E-BusinessTrust in information services and technologies has become an increasingly important issue. The development of trust between businesses, consumers, and other stakeholders is seen as crucial to the expansion of e-business markets and the full exploitation of technological developments in this area [3,4,10]. However, the way in which trust may be gained in this context is not yet well understood. Requirements relating to trust are seen from many different perspectives by different stakeholders, and often expressed in different terms. There is therefore a need for a common FERRUCIO SARDELLA

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Applied visualization researchers often work closely with domain collaborators to explore new and useful applications of visualization. The early stages of collaborations are typically time consuming for all stakeholders as researchers piece together an understanding of domain challenges from disparate discussions and meetings. A number of recent projects, however, report on the use of creative visualization-opportunities (CVO) workshops to accelerate the early stages of applied work, eliciting a wealth of requirements in a few days of focused work. Yet, there is no established guidance for how to use such workshops effectively. In this paper, we present the results of a 2-year collaboration in which we analyzed the use of 17 workshops in 10 visualization contexts. Its primary contribution is a framework for CVO workshops that: 1) identifies a process model for using workshops; 2) describes a structure of what happens within effective workshops; 3) recommends 25 actionable guidelines for future workshops; and 4) presents an example workshop and workshop methods. The creation of this framework exemplifies the use of critical reflection to learn about visualization in practice from diverse studies and experience.

This is the accepted version of the paper.This version of the publication may differ from the final published version. Abstract-We enhance a user-centered design process with techniques that deliberately promote creativity to identify opportunities for the visualization of data generated by a major energy supplier. Visualization prototypes developed in this way prove effective in a situation whereby data sets are largely unknown and requirements open -enabling successful exploration of possibilities for visualization in Smart Home data analysis. The process gives rise to novel designs and design metaphors including data sculpting. It suggests: that the deliberate use of creativity techniques with data stakeholders is likely to contribute to successful, novel and effective solutions; that being explicit about creativity may contribute to designers developing creative solutions; that using creativity techniques early in the design process may result in a creative approach persisting throughout the process. The work constitutes the first systematic visualization design for a data rich source that will be increasingly important to energy suppliers and consumers as Smart Meter technology is widely deployed. It is novel in explicitly employing creativity techniques at the requirements stage of visualization design and development, paving the way for further use and study of creativity methods in visualization design. Permanent repository link

. Modeldriven requirements engineering: Synchronising models in an air traffic management case study. Lecture Notes in Computer Science: Advanced Information Systems Engineering, 3084, pp. 368-383. doi: 10.1007/978-3-540-25975-6_27 This is the unspecified version of the paper.This version of the publication may differ from the final published version. This paper describes the application of RESCUE, a process that integrates 4 modelling techniques to model and analyse stakeholder requirements for DMAN, a system for scheduling and managing the departure of aircraft from major European airports. It describes how human activity, use case and i * modelling were applied and integrated using synchronisation checks t o model requirements on DMAN. Synchronisation checks applied at predefined stages in RESCUE revealed omissions and potential inconsistencies in the models and stakeholder requirements that, in turn, led to improvements to the models and resulting specification. The paper ends with implications for requirements model integration, and describes future work to extend and apply RESCUE. Permanent