Zahn, Carmen

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Zahn
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Carmen
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Zahn, Carmen

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2013 - 20173
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Thema: 005 - Computer Programmierung, Programme und Daten ×

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  • Vorschaubild
    Publikation
    Enhancing Agile Team Collaboration Through the Use of Large Digital Multi-touch Cardwalls
    (Springer, 2017) Kropp, Martin; Anslow, Craig; Mateescu, Magdalena; Burkhard, Roger; Vischi, Dario; Zahn, Carmen; Baumeister, Hubert; Lichter, Horst; Riebisch, Matthias [in: Agile Processes in Software Engineering and Extreme Programming]
    04B - Beitrag Konferenzschrift
  • Vorschaubild
    Publikation
    aWall: Agile Collaboration using Large Digital Multi-Touch Cardwalls
    (12/2016) Anslow, Craig; Burkhard, Roger; Kropp, Martin; Mateescu, Magdalena; Vischi, Dario; Zahn, Carmen [in: IMVS Fokus Report]
    Despite the availability of many digital agile board tools, most co-located agile software teams still use physical cardboards for their daily standup meetings. This is due to the fact that existing digital agile boards lacks supporting a collaborative workspace, direct interaction for the whole team in meetings, or making project information directly visible. In this paper we present aWall, a digital agile cardwall designed for the highly collaborative agile work style using large multi-touch wall displays. The effectiveness of aWall was evaluated in a user study with eleven software practitioners. Our findings indicate that aWall enables and encourages team work due to the large size of the wall, accessibility and visibility of large amounts of information, and possibility of customization of the interface. Based on this work, we suggest that augmenting digital cardwalls with large interactive touch technology and new interaction concepts is a useful way to support effective collaborative agile software development processes.
    01B - Beitrag in Magazin oder Zeitung
  • Vorschaubild nicht verfügbar
    Publikation
    Smartphones as multimodal communication devices to facilitate clinical knowledge processes a randomized controlled trial
    (JMIR Publications, 01.11.2013) Pimmer, Christoph; Mateescu, Magdalena; Zahn, Carmen; Genewein, Urs [in: Journal of Medical Internet Research]
    Background: Despite the widespread use and advancements of mobile technology that facilitate rich communication modes, there is little evidence demonstrating the value of smartphones for effective interclinician communication and knowledge processes. Objective: The objective of this study was to determine the effects of different synchronous smartphone-based modes of communication, such as (1) speech only, (2) speech and images, and (3) speech, images, and image annotation (guided noticing) on the recall and transfer of visually and verbally represented medical knowledge. Methods: The experiment was conducted from November 2011 to May 2012 at the University Hospital Basel (Switzerland) with 42 medical students in a masters program. All participants analyzed a standardized case (a patient with a subcapital fracture of the fifth metacarpal bone) based on a radiological image, photographs of the hand, and textual descriptions, and were asked to consult a remote surgical specialist via a smartphone. Participants were randomly assigned to 3 experimental conditions/groups. In group 1, the specialist provided verbal explanations (speech only). In group 2, the specialist provided verbal explanations and displayed the radiological image and the photographs to the participants (speech and images). In group 3, the specialist provided verbal explanations, displayed the radiological image and the photographs, and annotated the radiological image by drawing structures/angle elements (speech, images, and image annotation). To assess knowledge recall, participants were asked to write brief summaries of the case (verbally represented knowledge) after the consultation and to re-analyze the diagnostic images (visually represented knowledge). To assess knowledge transfer, participants analyzed a similar case without specialist support. Results: Data analysis by ANOVA found that participants in groups 2 and 3 (images used) evaluated the support provided by the specialist as significantly more positive than group 1, the speech-only group (group 1: mean 4.08, SD 0.90; group 2: mean 4.73, SD 0.59; group 3: mean 4.93, SD 0.25; F2,39=6.76, P=.003; partial 2=0.26, 1=.90). However, significant positive effects on the recall and transfer of visually represented medical knowledge were only observed when the smartphone-based communication involved the combination of speech, images, and image annotation (group 3). There were no significant positive effects on the recall and transfer of visually represented knowledge between group 1 (speech only) and group 2 (speech and images). No significant differences were observed between the groups regarding verbally represented medical knowledge. Conclusions: The results show (1) the value of annotation functions for digital and mobile technology for interclinician communication and medical informatics, and (2) the use of guided noticing (the integration of speech, images, and image annotation) leads to significantly improved knowledge gains for visually represented knowledge. This is particularly valuable in situations involving complex visual subject matters, typical in clinical practice.
    01A - Beitrag in wissenschaftlicher Zeitschrift