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Auflistung nach Autor:in "Mueller, Stefanie"

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  • Zeitschriftenartikel
    Interacting with personal fabrication devices
    (it - Information Technology: Vol. 60, No. 2, 2018) Mueller, Stefanie
    Personal fabrication tools, such as 3D printers, are on the way of enabling a future in which non-technical users will be able to create custom objects. While the hardware is now affordable and the number of people who own a 3D printer is increasing, only few create new 3D models. Most users download models from a 3D model database and after downloading fabricate them on their 3D printers. At most, users adjust a few parameters of the model, such as changing its color or browsing between predetermined shape options. I argue that personal fabrication has the potential for more: Instead of only consuming existing content, I envision a future in which non-technical users will create objects only trained experts can create today. While there are many open challenges for human-computer interaction, such as abstracting away the necessary domain and machine knowledge, I focus on improving the interaction model underlying current personal fabrication devices. In this article, I illustrate why today’s interaction model for personal fabrication tools is not suitable for non-technical users. For this, I draw an analogy to the development of the user interface in personal computing and show how solutions developed by human-computer interaction researchers over the last decades can be applied to this new domain. I analyze the challenges when creating interactive systems for personal fabrication and describe six research prototypes I built to overcome these challenges. I discuss the limitations of these systems and conclude with an overview of recent advancements in personal fabrication that will allow us to go beyond what is possible today.
  • Konferenzbeitrag
    Interaktionskonzepte für Personal Fabrication Geräte
    (Ausgezeichnete Informatikdissertationen 2016, 2017) Mueller, Stefanie
    Während ein 3D Drucker im Jahr 2007 noch 15.000 Euro kostete, kosten 3D Drucker heute im Schnitt nur noch 500 Euro. Auf diesem Preislevel sind die Geräte so erschwinglich, dass eine Zukunft in der jeder selbst Objekte produzieren kann in greifbare Nähe rückt. In meiner Dissertation untersuche ich die Fragestellung: Nun da die Hardware verfügbar ist, wie muss die Mensch-Maschine-Interaktion gestaltet werden, damit jeder eigene Objekte erstellen kann? Um diese Frage zu beantworten, stelle ich in eine Analogie zu Personal Computing her. In der Geschichte von Personal Computing trug eine verkürzte Rücklaufzeit zwischen Benutzereingabe und Systemausgabe so stark zur Vereinfachung der Interaktion bei, dass heutzutage jeder einen Computer bedienen kann. In meiner Dissertation zeige ich, wie die gleiche Entwicklung auf 3D Drucker angewendet werden kann mit dem Ziel, dass in Zukunft nicht nur jeder einen Personal Computer zuhause hat sondern auch ein Personal Fabrication Gerät.
  • Zeitschriftenartikel
    Linespace
    (Informatik Spektrum: Vol. 40, No. 6, 2017) Swaminathan, Saiganesh; Roumen, Thijs; Kovacs, Robert; Stangl, David; Mueller, Stefanie; Baudisch, Patrick
    For visually impaired users, making sense of spatial information is difficult as they have to scan and memorize content before being able to analyze it. Even worse, any update to the displayed content invalidates their spatial memory, which can force them to manually rescan the entire display. Making display contents persist, we argue, is thus the highest priority in designing a sensemaking system for the visually impaired. We present a tactile display system designed with this goal in mind. The foundation of our system is a large tactile display (140×100 cm, 23× larger than Hyperbraille), which we achieve by using a 3D printer to print raised lines of filament. The system’s software then uses the large space to minimize screen updates. Instead of panning and zooming, for example, our system creates additional views, leaving display contents intact and thus preserving user’s spatial memory. We illustrate our system and its design principles with the example of four spatial applications. We evaluated our system with six blind users. Participants responded favorably to the system and expressed, for example, that having multiple views at the same time was helpful. They also judged the increased expressiveness of lines over the more traditional dots as useful for encoding information.