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Institut
Discursive Patinas
(2024)
This paper presents discursive patinas, a technique to visualize discussions onto data visualizations, inspired by how people leave traces in the physical world. While data visualizations are widely discussed in online communities and social media, comments tend to be displayed separately from the visualization and we lack ways to relate these discussions back to the content of the visualization, e.g., to situate comments, explain visual patterns, or question assumptions. In our visualization annotation interface, users can designate areas within the visualization. Discursive patinas are made of overlaid visual marks (anchors), attached to textual comments with category labels, likes, and replies. By coloring and styling the anchors, a meta visualization emerges, showing what and where people comment and annotate the visualization. These patinas show regions of heavy discussions, recent commenting activity, and the distribution of questions, suggestions, or personal stories. We ran workshops with 90 students, domain experts, and visualization researchers to study how people use anchors to discuss visualizations and how patinas influence people's understanding of the discussion. Our results show that discursive patinas improve the ability to navigate discussions and guide people to comments that help understand, contextualize, or scrutinize the visualization. We discuss the potential of anchors and patinas to support discursive engagements, including critical readings of visualizations, design feedback, and feminist approaches to data visualization.
With this research we present an approach to network visualization that expands the capabilities for visual encoding and interactive exploration through edges in node-link diagrams. Compared to the various possibilities for visual and interactive properties of nodes, there are few techniques for interactive visualization of multivariate edge attributes in node-link diagrams. Visualization of edge attributes is oftentimes limited by occlusion and space issues of methods that globally encode attributes in a node-link diagram for all edges, not sufficiently exploiting the potential of interaction. Building up on existing techniques for edge encoding and interaction, we propose 'Unfolding Edges' as an exemplary use of an on-demand detail enhancing approach for exploration of multivariate edge attributes.
In this paper, we explore how extended reality (XR) and virtual reality (VR) can facilitate shared experiences that transcend individual boundaries. Using an example from the chemistry classroom, we illustrate how these technologies can enhance education and learning by fostering collaboration and shared understanding.Despite the vast potential of XR and VR, many of their applications remain isolated. Currently, sharing experiences often involves streaming onto a screen or verbal explanations, which can leave individuals feeling excluded if they are not directly involved. Even when multiple users wear VR or XR headsets, shared experiences are often limited to specific contexts like multiplayer VR games. Unfortunately, in domains such as education, work, or collaborative learning, these technologies are often underutilized.To bridge this gap, our study developed a prototype that leverages the eye-tracking and hand-tracking capabilities of the HoloLens2. This prototype enables collaborative interactions with 3D elements in an XR environment. By tracking participants' gaze within the XR scene, users can easily identify the element they are currently viewing. Through eye control and pinch gestures, users can manipulate digital content on the XR plane. When working within the same XR environment, users seamlessly share interactions and information, fostering a unified and collaborative experience with holograms.The current prototype is tailored to explore the intricate molecular details of sugar molecules within a collaborative XR environment. Teams of users can collectively delve into molecules such as fructose, glucose, galactose, and mannose, gaining deeper insights into their unique characteristics. Through interactions like eye-tracking and pinch gestures, users can directly interact with holographic 3D representations of these molecules. The prototype's user interface intuitively indicates which user is interacting with or observing each 3D object within the XR environment. Unlike conventional controllers, this prototype employs hand-tracking technology, enabling users to effortlessly navigate the XR interface using natural hand movements. This approach delivers an immersive and dynamic learning experience that surpasses traditional teaching methods, fostering heightened engagement and deeper understanding among learners. To assess the functionality and cognitive impact of the XR interface prototype, 19 participants were recruited for evaluation. Criteria for participant selection ensured they lacked prior knowledge or involvement in chemistry or related fields concerning sugar molecules. Following a brief introduction to the prototype's interaction patterns and eye calibration, participants engaged in testing across diverse learning scenarios. Initial survey findings suggest participants could swiftly distinguish between monosaccharides like glucose, fructose, galactose, and mannose based on their three-dimensional structures. However, results regarding gaze interaction evaluation are inconclusive and necessitate further experimentation.
Interfacing with power
(2017)
Drawing connections
(2018)
An/Leiten
(2017)
Carrying Computerization
(2018)
Durch und über Computer
(2019)
Einleitung : Interface
(2021)
Digital qualifiziertes Personal ist die Grundlage für eine zukunftsfähige Wissenschaftslandschaft. Die Omnipräsenz von digitalen Daten und Informationen, von Tools für Kommunikation und Kollaboration stellt nicht nur Wissenschaft und Forschung vor neue Herausforderungen, sondern die gesamte Gesellschaft. Überall bedarf es digitaler Kompetenzen, um mit den Möglichkeiten der digitalen Transformation bewusst und mündig umgehen zu können. Hier bietet die Informationswissenschaft gemeinsam mit der Informatik als Basiswissenschaft für alle Wissenschaften Ansätze und Lösungen, so zum Beispiel im Bereich Data Science und Data Stewardship. Basierend auf einem Diskussionspapier (Attallah et al., 2020) widmeten sich 19 Expert*innen im Kontext eines Interview-Podcasts der AG 6 „Digital qualifiziertes Personal“ der Allianz der Wissenschaftsorganisationen diesem komplexen Thema. Die 15 durchgeführten (Doppel-) Interviews bildeten die Basis für die Datengrundlage und wurden explorativ und softwaregestützt qualitativ analysiert. Ziel war die ergebnisoffene, aber möglichst umfängliche Abbildung und Analyse der von den Expert*innen angesprochenen Handlungsfelder, um unter anderem folgende Forschungsfragen beantworten zu können: Welche Kompetenzen werden für die digitale Qualifikation in den Wissenschaftsorganisationen benötigt? Welche Möglichkeiten und Verantwortlichkeiten für eine Kompetenzvermittlung gibt es? Welchen Beitrag können die Informationswissenschaften leisten?