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Johannes Schöning
Title
Prof. Dr.
Last Name
Schöning
First name
Johannes
Email
johannes.schoening@unisg.ch
ORCID
Phone
+41 71 224 3331
Homepage
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1 - 10 of 23
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PublicationExperiencing Dynamic Weight Changes in Virtual Reality Through Pseudo-Haptics and Vibrotactile Feedback(ACM, 2024)
;Carolin Stellmacher ;Feri Irsanto Pujianto ;Tanja Kojic ;Jan-niklas Voigt-antonsVirtual reality (VR) objects react dynamically to users’ touch interactions in real-time. However, experiencing changes in weight through the haptic sense remains challenging with consumer VR controllers due to their limited vibrotactile feedback. While prior works successfully applied pseudo-haptics to perceive absolute weight by manipulating the control-display (C/D) ratio, we continuously adjusted the C/D ratio to mimic weight changes. Vibrotactile feedback additionally emphasises the modulation in the virtual object’s physicality. In a study (N=18), we compared our multimodal technique with pseudo-haptics alone and a baseline condition to assess participants’ experiences of weight changes. Our findings demonstrate that participants perceived varying degrees of weight change when the C/D ratio was adjusted, validating its effectiveness for simulating dynamic weight in VR. However, the additional vibrotactile feedback did not improve weight change perception. This work extends the understanding of designing haptic experiences for lightweight VR systems by leveraging perceptual mechanisms.Type: conference paper -
PublicationMobile Map Applications for Foldable Devices( 2024)
;Jana WahlsAs foldable mobile devices grow in popularity, they often feature two screens-a smaller cover screen and a larger inside one, accessible by unfolding the device vertically or horizontally. Despite this, most mobile applications, including map apps, have yet to be fully optimised for these interfaces. This paper explores adaptations of mobile map applications for foldable mobile devices to enhance usability and user satisfaction. In a user study with nine participants, we identify key aspects of mobile map app design for exploration and navigation scenarios. Our results show that in navigation scenarios, screens should provide complementary information, with turn-by-turn instructions on one screen and a route overview on the other. Furthermore, our results show that map views should maintain map alignment and orientation across screens during exploration to prevent disorientation. Ultimately, we find that the success of mobile maps on foldable devices rests on the role and importance of context and user preference in mobile map interactions. Foldable devices offer a valuable chance of improving the mobile map experience on mobile devices if designers find useful ways to make use of the two screens and the increase screen real estate.Type: conference paper -
PublicationPlaying with Perspectives and Unveiling the Autoethnographic Kaleidoscope in HCI – A Literature Review of AutoethnographiesAutoethnography is a valuable methodological approach bridging the gap between personal experiences and academic inquiry, enabling researchers to gain deep insights into various dimensions of technology use and design. While its adoption in Human-Computer Interaction (HCI) continues to grow, a comprehensive investigation of its function and role within HCI research is still lacking. This paper examines the evolving landscape of autoethnographies within HCI over the past two decades through a systematic literature review. We identify prevalent themes, methodologies, and contributions emerging from autoethnographies by analysing a corpus of 31 HCI publications. Furthermore, we detail data collection techniques and analysis methods and describe reporting standards. Our literature review aims to inform future (HCI) researchers, practitioners, and designers. It encourages them to embrace autoethnography's rich opportunities by providing examples across domains (e.g., embodiment or health and wellbeing) to advance our understanding of the complex relationships between humans and technology.Type: conference paper
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PublicationMoodShaper: A Virtual Reality Experience to Support Managing Negative Emotions(ACM, 2024-06-01)
;Nadine Wagener ;Arne Kiesewetter ;Leon Reicherts ;Paweł W. Woźniak ;Yvonne RogersNegative emotions such as sadness or anger are often seen as something to be avoided. However, recognising, processing and regulating challenging emotional experiences can facilitate personal growth and is essential for long-term well-being. To support people in regulating and reflecting on negative emotions, we designed MoodShaper — a VR experience where participants autonomously create a virtual environment combined with emotion regulation (ER) interventions. Our system included three different interventions designed based on interviews with psychotherapists. We evaluated MoodShaper in a mixed-method between-subject study with 𝑛 = 60 participants. Participants experienced one of the three ER interventions, allowing them to manipulate visual representations of negative emotions through externalisation, seclusion, or appreciation. We found that MoodShaper significantly increased positive effects while decreasing difficulties in ER and negative effects. Our work demonstrates how VR can provide technology-mediated support to reflect on, engage with and manage negative emotions. We contribute insights for future VR systems that support ER in challenging situations.Type: conference paper -
PublicationDesigning Grocery Shopping Experiences for Virtual RealityOnline grocery shopping offers time-saving efficiency and convenience, yet many people still prefer physical shopping for trust in food freshness and other sensory experiences. While online stores are evolving to offer new user experiences, such as supporting eco-friendly or ethical shopping, the desktop and mobile platforms limit the engagement of such experiences. Virtual Reality (VR) presents an opportunity to create immersive and rich grocery shopping experiences, closing the gap between the convenience of online shopping and the sensory experience of physical shopping. Yet, designing VR grocery stores remains relatively unexplored. In this paper, we investigate the long-term potential of VR grocery stores, focusing on meeting individual needs. Through a co-design workshop, participants brainstormed the design of product displays, in-shop navigation, shopping carts, social shopping, among others. Based on our findings, we provide design recommendations for future VR grocery shopping to develop meaningful alternatives to existing shopping experiences for groceries.Type: conference paper
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PublicationType: conference paperJournal: SpaceCHI 2023: In Proceeding of the Conference on Human-Computer Interaction for Space Exploration
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PublicationType: conference paper
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PublicationMagiBricks: Fostering Intergenerational Connectedness in Distributed Play with Smart Toy Bricks(ACM, 2023-05-01)
;Stefanidi, Evropi ;Dominiak, Julia ;Bentvelzen, Marit ;Woźniak, Pavel ;Rogers, YvonneType: conference paper -
PublicationType: conference paper
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PublicationContinuous VR Weight Illusion by Combining Adaptive Trigger Resistance and Control-Display Ratio Manipulation(IEEE, 2023)
;Stellmacher, Carolin ;Zenner, Andre ;Nunez, Oscar Javier Ariza ;Kruijff, ErnstType: conference paper
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