Number of co-authors:9
Number of publications with 3 favourite co-authors:Lisanne Brons:1Rick van der Kleij:1Puck Imants:1
Tjerk de Greef's 3 most productive colleagues in number of publications:Rick van der Kleij:9Jasper Lindenberg:6Peter-Paul van Maa..:3
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Tjerk de Greef
Publications by Tjerk de Greef (bibliography)
Imants, Puck and Greef, Tjerk de (2011): Using eye tracker data in air traffic control. In: Proceedings of the 2011 Annual European Conference on Cognitive Ergonomics 2011. pp. 259-260.
Motivation/Research approach -- An exploratory study was conducted to investigate whether eye movement metrics discriminate between different air traffic control tasks. Findings/Design -- The results show the three tasks elicit different eye movement, as Yarbus (1967) also showed in static pictures, and that a number of eye tracking metrics demonstrate the differences. Research limitations/Implications -- The effect was demonstrated using only one participant. The results can be used to further study various eye movement metrics. Originality/Value -- The research demonstrates that different calculus distinguishes between tasks allowing targeting specific support given the type of task. Take away message -- A combination of eye tracker metrics discriminates between tasks helping to provide flexible task support.
© All rights reserved Imants and Greef and/or their publisher
Greef, Tjerk de, Botzer, Assaf and Maanen, Peter-Paul van (2010): Eye-tracking = reading the mind. In: Proceedings of the 2010 Annual European Conference on Cognitive Ergonomics 2010. pp. 303-304.
Eye activity measures are utilized to make inferences about human activity. While much is known how to use the eye to infer workload, less is known about inferring higher-level cognitive processes from lower-level eye movements. The main question addressed in the workshop is how to use eye activity measures in order to support higher-level cognitive processes. The workshop mainly serves to establish an international special interest group interested in making research proposals about the above-mentioned topic. The workshop entails a full day using the morning to establish a short overview of the state-of-the-art in eye activity measures and applications. The afternoon will be used to form consortia and generate research proposal ideas. People interested are required to shortly motivate their attendance by describing their research interest, experience, and a visionary statement that identifies knowledge gaps and possible approaches to bridge them (max. 500 words).
© All rights reserved Greef et al. and/or their publisher
Brons, Lisanne, Greef, Tjerk de and Kleij, Rick van der (2010): The influence of an activity awareness display on distributed multi-team systems. In: Proceedings of the 2010 Annual European Conference on Cognitive Ergonomics 2010. pp. 335-336.
Motivation -- Both multi-team systems and awareness displays have been studied more often in the past years, but there hasn't been much focus on the combination of these two subjects. Apart from doing so, we are particularly interested in the difficulties encountered when multi-team systems are distributed among different locations and how interface technology plays a role in overcoming these. We hypothesise that an activity awareness display will positively effect the performance of teams that are collaborating at a distance. Research approach -- During an experiment we look at two teams of two persons each working together on a complex task. In total 20 multi-teams are tested. Half of them is provided with a display containing information about the other team in order to raise their activity awareness. Performance, time, communication and back-up behaviour are measured. After the task participants are questioned about their perceived performance, workload and inter-team coordination. Design -- An activity awareness display should communicate the current activity being executed, the status of that activity, and the workload of the remote team. Originality/Value -- The goal of this project is to lay out a theoretical base for designing tools to improve the performance of remotely collaborating teams such as Urban Search And Rescue teams missions. Take away message -- An awareness display hypothetically improves multi-team performance through more back-up behaviour and less communication.
© All rights reserved Brons et al. and/or their publisher
Greef, Tjerk de, Dongen, Kees van, Grootjen, Marc and Lindenberg, Jasper (2007): Augmenting Cognition: Reviewing the Symbiotic Relation Between Man and Machine. In: Schmorrow, Dylan and Reeves, Leah (eds.) FAC 2007 - Foundations of Augmented Cognition - Third International Conference July 22-27, 2007, Beijing, China. pp. 439-448.
Greef, Tjerk de and Arciszewski, Henryk (2007): A Closed-Loop Adaptive System for Command and Control. In: Schmorrow, Dylan and Reeves, Leah (eds.) FAC 2007 - Foundations of Augmented Cognition - Third International Conference July 22-27, 2007, Beijing, China. pp. 276-285.
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