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Ralph Rengger

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Publications by Ralph Rengger (bibliography)

1993

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Macleod, Miles and Rengger, Ralph (1993): The Development of DRUM: A Software Tool for Video-Assisted Usability Evaluation. In: Alty, James L., Diaper, Dan and Guest, D. (eds.) Proceedings of the Eighth Conference of the British Computer Society Human Computer Interaction Specialist Group - People and Computers VIII August 7-10, 1993, Loughborough University, UK. pp. 293-309.

“The development is reported of a practical software tool which supports video-assisted observational evaluation of usability. The Diagnostic Recorder for Usability Measurement (DRUM) helps evaluators to organise and analyse user-based evaluations, and to deliver measures and diagnostic data. This paper reports DRUM's rationale, theoretical background, requirements capture and collaborative iterative development. It outlines DRUM's functionality and manner of use. DRUM runs on Apple Macintosh, drives a range of video machines, and supports management of evaluation data, task analysis, video mark-up and logging (with find and replay of logged events), analysis of logged data and calculation of metrics.”

1991

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Rengger, Ralph (1991): Indicators of Usability Based on Performance. In: Proceedings of the Fourth International Conference on Human-Computer Interaction 1991. pp. 656-660.

“As part of the ESPRIT MUSiC Project, literature recently published on measuring the performance of Human Computer Interaction (HCI) was I surveyed. 'Indicators of usability based on performance' were identified and assigned to generic groups. Using the experience of NPL and the HUSAT Research Institute in Loughborough, coupled with evidence from the literature survey, a set of indicators of usability based on performance were proposed for validation. The NPL work was jointly supported by the CEC and by the UK Department of Trade and Industry.”

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