1,720,972 research outputs found
JigFab: Computational Fabrication of Constraints to FacilitateWoodworking with Power Tools
No full textstatus: Publishe
History in Motion: Interactive 3D Animated Visualizations for Understanding and Exploring the Modeling History of 3D CAD Designs
No full textWe present History in Motion (HiM), an interactive visualization tool that enables CAD designers to interactively explore the design history of 3D CAD models. In contrast to manually exploring the modeling history of a CAD project, HiM finds relevant modeling features for geometry elements selected by the designer. We contribute a novel 3D interactive animation that visualizes how the modeling features interact, and are used on top of the CAD model, to realize the geometry. A control panel allows for a deeper exploration of the modeling features, with shortcuts for making modifications.Special Research Fund (BOF) of Hasselt Universit
Demonstrating History in Motion: Interactive 3D Animated Visualizations for Understanding and Exploring the Modeling History of 3D CAD Designs
No full textHistory in Motion (HiM) is an interactive visualization tool that enables CAD designers to interactively explore the design history of 3D CAD models. In contrast to manually exploring the modeling history of a CAD project, designers can select geometry elements to find relevant modeling features in HiM. These modeling features are then explained to designers using a novel 3D interactive animation that visualizes how the modeling features interact, and are used on top of the CAD model, to realize the selected geometry. A control panel in HiM allows for a deeper exploration of the modeling features, with shortcuts for making modifications. During this demonstration, attendees can experiment with HiM on a variety of CAD designs and explore their design histories.This research was supported by the Special Research Fund (BOF) of Hasselt Universit
LamiFold: Fabricating Objects with Integrated Mechanisms Using a Laser cutter Lamination Workflow
No full textWe present LamiFold, a novel design and fabrication workflow for making functional mechanical objects using a laser cutter. Objects fabricated with LamiFold embed advanced rotary, linear, and chained mechanisms, including linkages that support fine-tuning and locking position. Laser cutting such mechanisms without LamiFold requires designing for and embedding off-the-shelf parts such as springs, bolts, and axles for gears. The key to laser cutting our functional mechanisms is the selective cutting and gluing of stacks of sheet material. Designing mechanisms for this workflow is non-trivial, therefore we contribute a set of mechanical primitives that are compatible with our lamination workflow and can be combined to realize advanced mechanical systems. Our software design environment facilitates the process of inserting and composing our mechanical primitives and realizing functional laser-cut objects.status: Publishe
StrutModeling: A Low-Fidelity Construction Kit to Iteratively Model, Test, and Adapt 3D Objects
No full textWe present StrutModeling, a computationally enhanced construction kit that enables users without a 3D modeling background to prototype 3D models by assembling struts and hub primitives in physical space. Physical 3D models are immediately captured in software and result in readily available models for 3D printing. Given the concrete physical format of StrutModels, modeled objects can be tested and fine tuned in the presence of existing objects and specific needs of users. StrutModeling avoids puzzling with pieces by contributing an adjustable strut and universal hub design. Struts can be adjusted in length and snap to magnetic hubs in any configuration. As such, arbitrarily complex models can be modeled, tested, and adjusted during the design phase. In addition, the embedded sensing capabilities allow struts to be used as measuring devices for lengths and angles, and tune physical mesh models according to existing physical objects.sponsorship: Research Foundation Flanders (FWO)status: Publishe
StackMold: Rapid Prototyping of Functional Multi-Material Objects with Selective Levels of Surface Details
No full textWe present StackMold, a DIY molding technique to prototype multi-material and multi-colored objects with embedded electronics. The key concept of our approach is a novel multi-stage mold buildup in which casting operations are interleaved with the assembly of the mold to form independent compartments for casting different materials. To build multi-stage molds, we contribute novel algorithms that computationally design and optimize the mold and casting procedure. By default, the multi-stage mold is fabricated in slices using a laser cutter. For regions that require more surface detail, a high-fidelity 3D-printed mold subsection can be incorporated. StackMold is an integrated end-to-end system, supporting all stages of the process: it provides a UI to specify material and detail regions of a 3D~object; it generates fabrication files for the molds; and it produces a step-by-step casting instruction manual.status: Publishe
Designing Instructions using Self-Determination Theory to Improve Motivation and Engagement for Learning Craft
No full textRecent HCI research has shown signifcant interest in investigating digital working instructions for guiding novices to perform manual tasks. While performance enhancement has been a primary focus, it is increasingly recognized that technology's impact extends beyond objective metrics. Trainee motivation and engagement plays a pivotal role in enhancing learning outcomes and efectiveness. This paper investigates the utilization of principles from Self Determination Theory-clear attainable goals, meaningful rationale, and perspective taking-in designing multimedia instructions to enhance novice users' indicators of psychological well-being. We present fndings from an experiment involving real-world wood-working, where novice users, in a between-subjects study, followed interactive, in-situ projection-based guidance. Results demonstrate that adhering to SDT postulates can positively infuence perceived competence, intrinsic motivation and task execution quality. These fndings ofer valuable insights for designing digital instructions to guide and train novices, emphasizing the importance of psychological well-being alongside task performance.This research was supported by the project SAIL: SustAInable Lifecycle of Intelligent Socio-Technical Systems, funded by the Ministry of Culture and Science of the State of North Rhine-Westphalia, Germany, under grant no NW21-059C. This research was partially supported by Flanders Make, the strategic research center for the manufacturing industry in the projects AUTOCRAFT, WELLFICIENCY and OPERATORASSIST and by the Flemish Government under the “Onderzoeksprogramma Artifciële Intelligentie (AI) Vlaanderen” program
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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