Publication statistics

Pub. period:2008-2012
Pub. count:12
Number of co-authors:12



Co-authors

Number of publications with 3 favourite co-authors:

Ron Jagodzinski:
Alexander Mller:
Gotz Wintergerst:

 

 

Productive colleagues

Gesche Joost's 3 most productive colleagues in number of publications:

Fabian Hemmert:18
Reto Wettach:13
Matthias Lowe:9
 
 
 

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Gesche Joost

 

Publications by Gesche Joost (bibliography)

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2012
 
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Gollner, Ulrike, Bieling, Tom and Joost, Gesche (2012): Mobile Lorm Glove: introducing a communication device for deaf-blind people. In: Proceedings of the 6th International Conference on Tangible and Embedded Interaction 2012. pp. 127-130. Available online

Marginalized communities like deaf-blind people are excluded from several forms of communication. This paper introduces a novel system of interaction to support deaf-blind people's communication and therefore enhance their independence. We introduce the Mobile Lorm Glove: a mobile communication and translation device for the deaf-blind. The glove translates the hand-touch alphabet Lorm, a common form of communication used by people with both hearing and sight impairment, into text and vice versa. We will present a hardware prototype, created in a participatory design process, which enables the deaf-blind user to compose messages via fabric pressure sensors placed on the palm of the glove to be transmitted as an SMS to the receiver's handheld. Initiated by small vibrating motors located on the back of the glove, tactile feedback patterns allow the wearer to perceive incoming messages. We discuss related work, prototype design and interaction design and application scenarios. We conclude with an outlook into further research.

© All rights reserved Gollner et al. and/or ACM Press

2011
 
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Hemmert, Fabian, Gollner, Ulrike, Lowe, Matthias, Wohlauf, Anne and Joost, Gesche (2011): Intimate mobiles: grasping, kissing and whispering as a means of telecommunication in mobile phones. In: Proceedings of 13th Conference on Human-computer interaction with mobile devices and services 2011. pp. 21-24. Available online

In this paper, we explore how direct physical cues of interpersonal nearness can be achieved in mobile phones. Exemplarily, we present three novel means of communication for mobile phones: grasping, kissing and whispering. Reviewing the related work, we point to a research gap in direct physical near-body actuation in mobile telecommunication. To assess this gap, we present three prototypes that implement the proposed novel means of communication. We present initial user comments on the prototypes, which point to acceptance issues. We conclude in a set of research questions for future explorations in this field.

© All rights reserved Hemmert et al. and/or ACM Press

2010
 
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Hemmert, Fabian, Hamann, Susann, Lowe, Matthias, Wohlauf, Anne, Zeipelt, Josefine and Joost, Gesche (2010): Take me by the hand: haptic compasses in mobile devices through shape change and weight shift. In: Proceedings of the Sixth Nordic Conference on Human-Computer Interaction 2010. pp. 671-674. Available online

This paper compares two novel physical information displays, both of which allow for haptic, non-invasive, non-audiovisual information display: a shape-changing device and a weight-shifting device. As for their suitability in mobile navigation applications, the two haptic systems are compared against each other, and also against a GUI-based solution, which serves as a baseline. The results of the study indicate that the shape- and weight-based displays are less accurate than the GUI-based variant, but may be suitable for simple directional guidance (e.g. walking ahead, or turning left or right) and beneficial in terms of reaction times to visual cues (e.g. traffic lights). This paper concludes with an outlook towards potential future research activities in this field.

© All rights reserved Hemmert et al. and/or their publisher

 
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Hemmert, Fabian, Hamann, Susann, Lowe, Matthias, Zeipelt, Josefine and Joost, Gesche (2010): Shape-changing mobiles: tapering in two-dimensional deformational displays in mobile phones. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3075-3080. Available online

This paper presents a novel haptic actuation system for mobile phones: Two-dimensional tapering through an actuated back plate. It proposes this type of shape-change for various applications, e.g. for ergonomically actuating the shape itself, displaying internal contents, and pointing to entities located outside the device. The paper reports a user study in which the accuracy of perceiving the two-dimensional tilt of the phone's back plate is measured, as well as results from a questionnaire and a user interview. The results indicate that two-dimensional shape change may be a suitable addition to existing mobile phone technology.

© All rights reserved Hemmert et al. and/or their publisher

 
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Hemmert, Fabian, Hamann, Susann, Lowe, Matthias, Zeipelt, Josefine and Joost, Gesche (2010): Weight-shifting mobiles: automatic balancing in mobile phones. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3081-3086. Available online

This paper presents a new type of interaction support for mobile phones: Automatic balancing through weight-shift. It proposes that weight-shift in mobile phones could be used as to change the device's balancing behavior. The question that this technology can help us to explore is how our interaction with mobile phones in everyday life could change, once devices were able to actively change the way we hold them in our hands. Various levels of interaction are proposed: Balancing based on angular tilt and counter-balancing of button-clicks, and, for a future implementation, balancing, supported through grasp recognition. We report a user study that assessed in how much such a system may help users to balance the a device equipped with the proposed system. It concludes that actuated balancing may be helpful in mobile interactions, but that it needs to be designed carefully.

© All rights reserved Hemmert et al. and/or their publisher

 
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Hemmert, Fabian, Hamann, Susann, Lowe, Matthias, Zeipelt, Josefine and Joost, Gesche (2010): Weight-shifting mobiles: two-dimensional gravitational displays in mobile phones. In: Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems 2010. pp. 3087-3092. Available online

In this paper, we present a novel type of haptic display for usage in mobile phones. It changes the gravitational properties of the device by shifting an internal weight along two axes. Its utility is explored in a performance study, in which users were estimating positions of the device's actuated center of gravity. The users also participated in qualitative studies: A questionnaire that assessed the perceived quality of interacting with the device, and an interview in which they described their experiences with the weight-shifting mobile. Furthermore, this paper suggests three domains of application in which the system may be of benefit: Augmenting digital content with physical mass, ambient displays, and haptically augmented wayfinding.

© All rights reserved Hemmert et al. and/or their publisher

 
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Hemmert, Fabian, Hamann, Susann, Lowe, Matthias, Zeipelt, Josefine and Joost, Gesche (2010): Co-designing with children: a comparison of embodied and disembodied sketching techniques in the design of child age communication devices. In: Proceedings of ACM IDC10 Interaction Design and Children 2010. pp. 202-205. Available online

In this paper, we present a qualitative comparison of different sketching techniques, assessing their suitability for co-designing interaction design with children. It presents a study conducted in an experimental field research, in which children aged 6-12 were engaged in a co-design process, aimed to the creation of novel communication devices or services that fit their particular needs. The study compared embodied, physical sketching (body storming that was documented as photo stories) with disembodied, drawn sketching (comics), as for their creative results, and how the children, reportedly, felt during the creation process. The results indicate that embodied sketching techniques were more suitable for the children, both as for the quality of the results, and for the subjective experience of the children while designing.

© All rights reserved Hemmert et al. and/or their publisher

 
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Hemmert, Fabian, Mller, Alexander, Jagodzinski, Ron, Wintergerst, Gotz and Joost, Gesche (2010): Reflective haptics: haptic augmentation of GUIs through frictional actuation of stylus-based interactions. In: Proceedings of the 2010 ACM Symposium on User Interface Software and Technology 2010. pp. 383-384. Available online

In this paper, we present a novel system for stylus-based GUI interactions: Simulated physics through actuated frictional properties of a touch screen stylus. We present a prototype that implements a series of principles which we propose for the design of frictionally augmented GUIs. It is discussed how such actuation could be a potential addition of value for stylus-controlled GUIs, through enabling prioritized content, allowing for inherent confirmation, and leveraging on manual dexterity.

© All rights reserved Hemmert et al. and/or their publisher

2009
 
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Hemmert, Fabian, Lowe, Matthias, Wohlauf, Anne and Joost, Gesche (2009): Tactful calling: urgency-augmented phone calls through high-resolution pressure input on mobile phones. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 3187-3192. Available online

In this paper we present a system that simulates urgency-augmented phone calls on mobile phones. Different scenarios and interaction techniques are discussed. We report a user study that indicates a general need for such a system and explored the applicability of using a force sensor as a way of intuitive call urgency articulation. The proposed system allows trying out urgency-augmented phone calls hands-on.

© All rights reserved Hemmert et al. and/or ACM Press

 
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Hemmert, Fabian, Knorig, Andr, Joost, Gesche and Wettach, Reto (2009): Stick, Click n' Call: self-adhesive pressure-activated RFID tags for mobile phones. In: Villar, Nicolas, Izadi, Shahram, Fraser, Mike and Benford, Steve (eds.) TEI 2009 - Proceedings of the 3rd International Conference on Tangible and Embedded Interaction February 16-18, 2009, Cambridge, UK. pp. 283-284. Available online

 
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Hemmert, Fabian, Hamann, Susann, Lowe, Matthias, Wohlauf, Anne and Joost, Gesche (2009): Shape-changing mobiles: tapering in one-dimensional deformational displays in mobile phones. In: Proceedings of the 4th International Conference on Tangible and Embedded Interaction 2009. pp. 249-252. Available online

In this paper, we present a new shape-based display technique for mobile phones: A rotatory deformation of the phone's chassis, resulting in a tapering between the phone's front and back panel. It draws on proprioceptive skills of the human hand, which we hypothesize to be sensitive to paralellism and tapering of two opposing panels. We present a number of applications for such an actuation system: Interactive Feedback, User Notification, and Ambient Display. The proposed system is evaluated in a user study, which results point to certain advantages, as well as drawbacks, in comparison to other mobile actuation systems. We conclude by discussing areas in which tapering-based deformational displays may be used advantageously, and how the proposed system may be improved in the future.

© All rights reserved Hemmert et al. and/or their publisher

2008
 
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Hemmert, Fabian, Joost, Gesche, Knorig, Andr and Wettach, Reto (2008): Dynamic knobs: shape change as a means of interaction on a mobile phone. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 2309-2314. Available online

In this paper, we introduce the change of a mobile phone's hardware shape as a means of tactile interaction. The alteration of shape is implemented in a hardware prototype using a dynamic knob as an interaction device for the user. The knob alters the phone's shape according to different events and states, like incoming calls, new voice mail, or missed calls. Therefore, the user can explore the phone's status by touching it -- ambiently, even through the pocket. Initial user testing showed that this form of tactile interaction was easy to understand and handy to interact with, also for unexperienced users.

© All rights reserved Hemmert et al. and/or ACM Press

 
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