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Auflistung nach Autor:in "Gollasch, David"

1 - 6 von 6
  • Konferenzbeitrag
    Age-Related Differences in Preferences for Using Voice Assistants
    (Mensch und Computer 2021 - Tagungsband, 2021) Gollasch, David; Weber, Gerhard
    In the past fewyears, voice assistants have become broadly available in different forms of presentation and devices – not only as a personal assistant within smartphones but as smart speakers, within TV sets or as part of an in-car infotainment system. Furthermore, we live in an ageing society and considering elderly people as users of voice assistants gains more relevance driven by both trends. The goal of this study is to identify the specific age-related preferences of older people when using a conversational user interface in form of a voice assistant. We conducted a survey based on 26 elderlyrelated communication strategies among participants of different age. The participants had to evaluate the strategies according to their own preferences for using voice assistants. As a result, we identified 11 preferences specific to older users. Surprisingly, most of the communication strategies, when applied to voice assistants, seem to be relevant for users of all ages, and a few of the communication strategies do not apply when used in voice assistants. The preferences specific to older people help to develop new guidelines for voice user interfaces or conversational user interfaces in general. They do not automatically lead to those guidelines but provide a foundation to derive requirements, develop guidelines and evaluate those guidelines by means of user-based usability tests.
  • Konferenzbeitrag
    Customized Wake-Word Integration in ANC-Enabled Headphones: Enhancing Assistive Technology for Noise-Sensitive Employees in Office
    (Proceedings of Mensch und Computer 2024, 2024) Schmalfuß-Schwarz, Jan; Gollasch, David; Engel, Christin; Branig, Meinhardt; Weber, Gerhard
    This paper explores the personalization of wake words in Active Noise Cancelling (ANC) enabled headphones designed as assistive technology for noise-sensitive individuals. We focus on the incorporation and assessment of intended wake words, categorizing them based on fillers and first names. Given the language-dependent nature of this approach, our research primarily addresses the English language. We propose an evaluation mechanism to determine the efficacy of potential wake words, predicting their recognition accuracy and length. The study involves a comparative analysis between combinations of fillers and first names, aiming to identify the optimal pairing. We offer recommendations on the best-performing combinations, enhancing the reliability and user experience of ANC headphones as a supportive tool for noise-sensitive individuals. Our findings aim to provide a robust framework for developing highly responsive and personalized wake word systems, tailored to the unique needs of noise-sensitive individuals in office environments.
  • Konferenzbeitrag
    Designing VUIs for Social Assistance Robots for People with Dementia
    (Mensch und Computer 2021 - Tagungsband, 2021) Striegl, Julian; Gollasch, David; Loitsch, Claudia; Weber, Gerhard
    Elderly people and especially people with dementia often experience social isolation and need assistance while performing activities of daily living. We investigate a novel approach to cope with this problem by integrating voice assistants and social assistance robots. Due to the special communication needs of people with mild cognitive impairment, the design of interfaces of such systems is to be based on the particular requirements of the target user group. This paper investigates, how a voice user interface should be designed for elderly users with mild cognitive impairment – such as an early stage of dementia – to provide personalised support throughout activities of daily living. A context and user analysis delivered a set of 11 guidelines for voice user interfaces for people with dementia. For a pilot study we selected those strategies often applied by caregivers in their communication with people with dementia and evaluated the voice user interface among elderly participants and healthcare workers who reported a high feasibility, usefulness and acceptance of the designed system.
  • Workshopbeitrag
    Towards Accessible Charts for Blind and Partially Sighted People
    (Mensch und Computer 2017 - Tagungsband, 2017) Engel, Christin; Gollasch, David; Branig, Meinhardt; Weber, Gerhard
    Perception of charts is a challenging task for blind and visually impaired people. Nevertheless, charts are an important tool to analyse data. Appropriate output media are needed making data analysis more accessible. We propose a workflow and tooling requirements to integrate the generation of accessible charts. Towards getting there, we present our current prototypical state and specify further steps.
  • Workshopbeitrag
    Transferring Real Operating Concepts Into Virtual Reality for Neurodiverse Learners
    (Mensch und Computer 2023 - Workshopband, 2023) Mai, Linh Tuan; Gollasch, David; Boß, Constantin; Werdin, Heiko
    The application of modern technologies to improve educational environments is required due to a lack of workers, a decline in engineering student enrolment, and insufficient support for students who are neurodivergent. To support high education and career training for neurodiverse learners, this paper investigates the incorporation of real device operating concepts into virtual reality. Various VR implementations of common operating components were compared for immersion and usability. Functional virtual devices with operating components were integrated into a VR education platform and evaluated with both neurotypical and people with ASD. The study results demonstrate high usability for neurotypical users while emphasizing the need for improved graphical quality, user comfort, and the integration of features and techniques that enhance user movements and provide adaptable interfaces for neurodivergent users.
  • Workshopbeitrag
    Workshop on Designing Accessible Extended Reality: An Opportunity for People with Disabilities and Disorders
    (Mensch und Computer 2023 - Workshopband, 2023) Engel, Christin; Schmalfuß-Schwarz, Jan; Gollasch, David; Branig, Meinhardt; Dirks, Susanne; Weber, Gerhard
    Extended Reality (XR) technologies offer a wide range of innovative use cases and interaction concepts. On the one hand, they provide several possibilities to reduce barriers for people with specific physical or mental needs, e.g., through simulations, gamification, or training scenarios. Individuals with anxiety disorders, dementia, or autism spectrum disorder, for example, may also benefit. On the other hand, it is challenging to design accessible XR technologies for heterogeneous user groups. Therefore, the area of accessible XR as well as adaptation based on users' needs and contexts, is of high interest and has barely been researched yet. Participants of the workshop are encouraged to discuss both – the major challenges and opportunities in designing XR-based assistive technology for different target groups and scenarios, as well as the accessibility of XR technologies.