The operation of an airline is a very complex task and disruptions to the planned operation can occur on very short notice. Already a small disruption like a delay of some minutes can cost the airline a tremendous amount of money. Hence, it is crucial to proactively control all operations of the airline and efficiently prioritize and handle disruptions. Due to the complex setting and the need for ad hoc decisions this task can only be carried out by human operation controllers. In the field of airline operations control there exists already a vast variety of different software in productive use. We analyze the different approaches from two of the market leaders and identify problematic design choices. We take into account this analysis and develop a set of rules for an intuitive visualization of airline disruption data. Finally, we introduce our tool for visualizing such data which complies to these rules. The visualization enables the user to gain a fast overview over the current problem situation and to intuitively prioritize different problems and problem hierarchies. The efficiency of the design is evaluated with the help of a user study which shows that the new system significantly outperforms the current state of the art.

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Abstract. We present a case study outlining development efforts towards an interface ecology to be deployed in museums. We argue that the problem at hand calls for a highly interdisciplinary design process. Furthermore, system design in the domain of cultural education poses a unique set of challenges. At the same time few existing design methodologies are suitable for addressing this special environment of system design. We outline a set of tentative methodological elements aimed at informing adequate interdisciplinary development processes. The discussion is embedded into a critique of existing methodologies while being orientated towards inviting critique itself. The guiding insight steering our methodological developments is that fundamental differences between project participants and other stakeholders should be construed as assets. Rather than trying to integrate them or covering them up, the dynamic friction between differing viewpoints can be rendered productive by means of poietic practices.

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Ergonomics deals with the analysis and design of work processes. To identify ergonomically critical situations, appropriate evaluation options have to be developed to enable an efficient analysis process. Nowadays, such analyses are typically carried out with the help of digital models of the surrounding area and virtual humans. These produce a multitude of geo-referenced and time-oriented data. We present a design study on how to visualize this data to support the ergonomically analysis process optimally. As consequence of a thorough requirements analysis and design process, we propose a novel interactive visualization which provides the user an overview of ergonomically critical situations and their causes. Simultaneously, the user obtains the main stress factors in a compressed form by a glyph-based visual design. Final expert interviews and a usability study depict the utility of the proposed visualization tool.