1,720,991 research outputs found
Investigation of Membrane Computing for Generative Computer Graphics
No full textIn order to explore new methods of generative graphics, we have explored the use of the relatively new computing paradigm known as Membrane Computing. Similar to the oft-used technique known as Lindenmeyer Systems (L- Systems), Membrane Computing shows potential as being a more powerful tool for generating graphics.Wagy, Mark; McDermott, James; Keefe, Daniel F.. (2011). Investigation of Membrane Computing for Generative Computer Graphics. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/215869
Toward Simulation-Based Medical Device Design: Integrating High Performance Cloud FEA Computing Into Intuitive Design Modeling
No full textposterWe present a new approach to simulation-based medical device design by integrating current CAD and FEA systems and developing natural human-computer interfaces to control the resulting integrated system. In order to utilize the high performance FEA computing power, a network communication program was developed and a Python script was used to initialize simulations and read calculated results. A complete design process of a breast biopsy cannula was demonstrated.Minnesota Supercomputing InstituteLin, Chi-Lun; Coffey, Dane; Erdman, Arthur; Keefe, Daniel. (2012). Toward Simulation-Based Medical Device Design: Integrating High Performance Cloud FEA Computing Into Intuitive Design Modeling. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/125299
BioWIM: A MultiSurface, MultiTouch Interface for Exploratory Visualization of Biomedical Data
No full textThis paper presents the BioWIM, a multi-surface, multi-touch interface for exploring visualizations of complex biomedical environments using a semi-immersive virtual reality (VR) display. The BioWIM reinterprets the traditional world-in-miniature (WIM) VR metaphor within the context of navigating visualizations based on medical imaging data and using the unique capabilities provided by coupling a multi-touch table with a stereoscopic display wall. A "Window to the World" metaphor is used to navigate a detailed 3D scene displayed on the vertical surface by manipulating widgets and making touch gestures on top of medical imaging data displayed on the table. The technique supports navigation through complex environments while maintaining context. The results of a controlled user study comparing the BioWIM to a more traditional touch interface demonstrate improvements in accuracy in a compound search and size judgment task when using the BioWIM. An interpretation of these results and discussion of design principles and lessons learned is presented.Coffey, Dane; Keefe, Daniel F.. (2010). BioWIM: A MultiSurface, MultiTouch Interface for Exploratory Visualization of Biomedical Data. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/215843
Visualizing Ancient Greek Rhetoric in Immersive Virtual Reality
No full textposterThe goal of this project is to reconstruct ancient Greek rhetorical sites in virtual environments, including simulating architecture, sound, crowds, to better understand how the physical settings structured and constrained the interactions that took place in them. Our work makes use of the large-format, head-tracked stereoscopic display at MSI, and our preliminary results include an immersive visualization of the Thersilion at Megalopolis, a site where speeches were once given to 10,000 people.Minnesota Supercomputing InstituteKim, Kyungyoon; Jackson, Bret; Thorson, Lauren; Graff, Richard; Rabbani, Azadeh; Johnstone, Christopher L.; Keefe, Daniel F.. (2012). Visualizing Ancient Greek Rhetoric in Immersive Virtual Reality. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/125296
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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