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Auflistung nach Autor:in "Franke, Thomas"

1 - 10 von 11
  • Konferenzbeitrag
    Affinity for technology interaction and fields of study: implications for human-centered design of applications for public administration
    (Mensch und Computer 2020 - Tagungsband, 2020) Wessel, Daniel; Heine, Moreen; Attig, Christiane; Franke, Thomas
    Affinity for Technology Interaction (ATI) describes whether a person approaches or avoids interaction with technology [1], making it an important variable in human-centered design. To determine whether ATI will likely remain an important variable in the future, we compared the ATI scores of those who will develop applications (students of media and computer science) with those who will use them in a specific context (students of public administration). We also looked for possible selection biases when conducting online samples regarding technology, by comparing a self-selected online sample of public administration employees with a sample of students of public administration conducted in a classroom, in which no selection biases should have had occurred. To locate the samples in the general population we also compared them with a quota sample of the German population. Results indicate markedly different approaches to technology interaction between the student samples and the online sample being more similar to the media and computer science students. We discuss consequences for the human-centered design process, especially for understanding the users.
  • Konferenzbeitrag
    ATI-S -- An Ultra-Short Scale for Assessing Affinity for Technology Interaction in User Studies
    (Mensch und Computer 2019 - Tagungsband, 2019) Wessel, Daniel; Attig, Christiane; Franke, Thomas
    In research and development in general, and in user-centered design (UCD) in particular, participants of studies have to be representative for the target audience. However, given the voluntary participation in user studies and an ensuing self-selection bias, participants of user studies likely prefer to engage with technology more strongly than the target audience in general (i.e., they have a higher affinity for technology interaction, ATI). Unchecked, this potential bias might lead to products that neglect important user groups or miss valuable market niches. At the same time, participants’ time is limited, so assessment of ATI must be economical. Thus, we propose an ultra-short ATI scale derived from the ATI scale by [10]. ATI-S was developed using theoretical considerations and empirical analyses. It provides a sufficiently reliable and valid assessment of ATI in conditions with strict time-constraints, in which the full ATI scale cannot be used.
  • Konferenzbeitrag
    EDA Scale - Assessing Awareness for Energy Dynamics
    (Mensch und Computer 2019 - Tagungsband, 2019) Gödker, Markus; Dresel, Markus; Franke, Thomas
    Energy-related behavior in resource dependent systems (e.g. electric vehicles, houses, ships) is an important factor for the actual energy efficiency such systems can achieve. Energy feedback human-machine-interfaces (HMIs) can support the awareness of energy dynamics in order to comprehend the situation and the influences on energy consumption and to control the system to enhance energy efficiency. To evaluate these HMIs a scale to assess the energy dynamics awareness (EDA) is needed. Therefore we developed the EDA scale with 7 items and tested the scale in a study with N = 40 battery electric bus (BEB) drivers on two different HMIs. First results indicated an excellent reliability (Cronbach’s α = .92 and .93) and principal factor analyses revealed a solid single factor structure (61.8% and 67.8% explained variance) with high factor loadings (> .61 for all items). Future studies should further explore the construct and criterion validity of the scale.
  • Zeitschriftenartikel
    The European commitment to human-centered technology: the integral role of HCI in the EU AI Act’s success
    (i-com: Vol. 23, No. 2, 2024) Valdez, André Calero; Heine, Moreen; Franke, Thomas; Jochems, Nicole; Jetter, Hans-Christian; Schrills, Tim
    The evolution of AI is set to profoundly reshape the future. The European Union, recognizing this impending prominence, has enacted the AI Act, regulating market access for AI-based systems. A salient feature of the Act is to guard democratic and humanistic values by focusing regulation on transparency, explainability, and the human ability to understand and control AI systems. Hereby, the EU AI Act does not merely specify technological requirements for AI systems. The EU issues a democratic call for human-centered AI systems and, in turn, an interdisciplinary research agenda for human-centered innovation in AI development. Without robust methods to assess AI systems and their effect on individuals and society, the EU AI Act may lead to repeating the mistakes of the General Data Protection Regulation of the EU and to rushed, chaotic, ad-hoc, and ambiguous implementation, causing more confusion than lending guidance. Moreover, determined research activities in Human-AI interaction will be pivotal for both regulatory compliance and the advancement of AI in a manner that is both ethical and effective. Such an approach will ensure that AI development aligns with human values and needs, fostering a technology landscape that is innovative, responsible, and an integral part of our society.
  • Workshopbeitrag
    An Explainability Case-Study for Conversational User Interfaces in Walk-Up-And-Use Contexts
    (Mensch und Computer 2021 - Workshopband, 2021) Schrills, Tim; Schmid, Leon; Jetter, Hans-Christian; Franke, Thomas
    interfaces (CUI) miss requirements for good usability, e.g. sufficient feedback regarding system status. Within a user-centred design process we created different design approaches to explain the CUI’s state. A prototypical explainable conversational user interface (XCUI) was developed, which explains its state by means of representations of (1) confidence, (2) intent alternatives, (3) entities, and (4) a context time line. The XCUI was then tested in a user study (N = 49) and compared with a conventional CUI in terms of user satisfaction and task completion time. Results indicated that completion time and satisfaction improvement were dependent on specific task characteristics. The effects of the implemented XCUI features potentially resulted from task-specific needs for explanation. This could be based on the tasks’ different complexity indicating the potential need for adaptive presentation of explainability features.
  • Workshopbeitrag
    German Translation of the Multimodal Presence Scale
    (Mensch und Computer 2018 - Tagungsband, 2018) Volkmann, Torben; Wessel, Daniel; Jochems, Nicole; Franke, Thomas
    Presence is a key variable in virtual reality. A differentiated assessment of presence is necessary to com-pare different versions of VR environments. The Multimodal Presence Scale (MPS) by Makransky, Lilleholt, and Aaby (2017) was developed to measure physical, social and self-presence. However, the scale is not yet available in German. We provide a professional translation of the scale and first indicators of its reliability, esp. in the context of assessing social presence, an increasingly important aspect of pres-ence.
  • Zeitschriftenartikel
    Opinion paper: Data provenance challenges in biomedical research
    (it - Information Technology: Vol. 59, No. 5, 2017) Baum, Benjamin; Bauer, Christian R.; Franke, Thomas; Kusch, Harald; Parciak, Marcel; Rottmann, Thorsten; Umbach, Nadine; Sax, Ulrich
    In this opinion paper we provide an overview of some challenges concerning data provenance in biomedical research. We reflect current literature and depict some examples of existing implicit or explicit provenance aspects in some standard data types in translational research. Furthermore, we assess the need of further data provenance standardization in biomedical informatics. Basic data provenance should provide a recall about the origin of the data, transformation process steps, support replication and presentation of the data. Even though usable concepts for the documentation of data provenance can be found in other fields as early as 2005, the penetration rate in biomedical projects and in the biomedical literature is quite low. The awareness for the necessity of basic data provenance has to be raised, the education of data managers has to be further improved.
  • Zeitschriftenartikel
    P3P — platform for privacy preferences project
    (Wirtschaftsinformatik: Vol. 43, No. 2, 2001) Franke, Thomas
  • Konferenzbeitrag
    Social Presence in a Virtual Reality Game with Different Levels of Abstraction: Testing the Social Presence Aspect of the Multimodal Presence Scale
    (Mensch und Computer 2019 - Tagungsband, 2019) Volkmann, Torben; Wessel, Daniel; Franke, Thomas; Jochems, Nicole
    Presence is a key variable in virtual reality (VR), however, it is a complex variable consisting of different aspects. The Multimodal Presence Scale (MPS) by Makransky, Lilleholt, and Aaby was developed to measure physical, social and self-presence. But how well can it actually detect changes in one aspect of presence, and differentiate between different aspects of presence? To answer these questions, we use a German translation of the MPS in an experiment with a VR game with 45 participants. We examine social presence -- the sense of being with another -- specifically, and compare three conditions (abstraction levels) that should differ in the degree of social presence, but not in other aspects of presence. Results indicate that the MPS is reliable and useful for measuring social presence, while still correlating strongly with presence overall.
  • Workshopbeitrag
    Trust in activity tracker measurement and its link to user acceptance
    (Mensch und Computer 2018 - Tagungsband, 2018) Trommler, Daniel; Attig, Christiane; Franke, Thomas
    Inaccuracies in data measurement can impair trustworthiness of activity trackers (i.e., wearable fitness devices) and, thus, constitute a usability challenge possibly impairing user acceptance. With the present research, we aim at advancing understanding of perceived trustworthiness of activity tracker measurement and its relevance for user acceptance. N = 79 users of activity trackers were surveyed regarding their daily interaction with the tracker, user experience, and user acceptance. Results indicated a substantial variance in perceived trustworthiness. Many users perceived suboptimal trustworthiness of the tracking of their activity data, indicating potential for optimization. Further, analyses showed that higher perceived trustworthiness of activity tracker measurement was indeed linked to higher user acceptance. The results highlight the potential of enhancing user acceptance of activity trackers by improving perceived trustworthiness of activity measurement.