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2014 Annual Conference on Extreme Science and Engineering Discovery Environment, XSEDE 2014

作者： Ruan, Guangchen Zhang, Hui Wernert, Eric Plale, Beth Data to Insight Center School of Informatics and Computing Indiana University United States Visualization and Analytics Pervasive Technology Institute Indiana University United States

ISBN: (纸本)9781450328937

As digital data sources grow in number and size, they pose an op-portunity for computational investigation by means of text mining, NLP, and other text analysis techniques. R is a popular and pow-erful text analytics tool;however, it needs to run in parallel and re-quires special handling to protect copyrighted content against full access (consumption). The HathiTrust Research center (HTRC) currently has 11 million volumes (books) where 7 million volumes are copyrighted. In this paper we propose HTRC TextRWeb, an in-teractive R software environment which employs complexity hid-ing interfaces and automatic code generation to allow large-scale text analytics in a non-consumptive means. For our principal test case of copyrighted data in HathiTrust Digital Library, TextRWeb permits us to code, edit, and submit text analytics methods empow-ered by a family of interactive web user interfaces. All these meth-ods combine to reveal a new interactive paradigm for large-scale text analytics on the web. Copyright 2014 ACM.

关键词： Digital libraries

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Mobile ADVICE: An accessible device for visually impaired capability enhancement

Mobile ADVICE: An accessible device for visually impaired ca...

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Conference on Human Factors in computing Systems, CHI EA 2003

作者： Amar, Robert Dow, Steven Gordon, Richard Hamid, Muhammad Raafay Sellers, Chad Graphics Visualization and Usability Center College of Computing Georgia Institute of Technology 801 Atlantic Drive NW Atlanta GA 30332-0280 United States

ISBN: (纸本)1581136374

The visually impaired have limited access to the world of mobile devices. Our goal was to design a handheld mobile device to overcome limitations such as reliance on visual display and lack of audio and tactile feedback. We built a prototype handheld device using a combination of tactile feedback and auditory display based on preliminary research and testing. Our hypothesis was that this device would provide users with an interface with which they would be able to access advanced functions of a mobile device. This prototype was evaluated by both blind and sighted users. Based on both quantitative and qualitative measures, the results suggest that such a device can enhance the capabilities of visually impaired users of handheld mobile devices.

关键词： Display devices

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A Study of Transfer Function Generation for Time-Varying Volume Data 2

A Study of Transfer Function Generation for Time-Varying Vol...

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2nd IEEE TCVG / Eurographics International Workshop on Volume Graphics, VG 2001

作者： Jankun-Kelly, T.J. Ma, Kwan-Liu Visualization And Graphics Research Group Center For Image Processing And Integrated Computing University Of California Department Of Computer Science DavisCA95616 United States

ISBN: (纸本)321183737X

The proper usage and creation of transfer functions for time-varying data sets is an often ignored problem in volume visualization. Although methods and guidelines exist for time-invariant data, little formal study for the timevarying case has been performed. This paper examines this problem, and reports the study that we have conducted to determine how the dynamic behavior of time-varying data may be captured by a single or small set of transfer functions. The criteria which dictate when more than one transfer function is needed were also investigated. Four data sets with different temporal characteristics were used for our study. Results obtained using two different classes of methods are discussed, along with lessons learned. These methods, including a new multiresolution opacity map approach, can be used for semi-automatic generation of transfer functions to explore large-scale time-varying data sets. © VG 2001. All rights reserved.

关键词： Transfer functions

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Transportation visualization 08

Transportation visualization

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ACM SIGGRAPH 2008 Classes

作者： Organizer, Class Rhyne, Theresa-Marie Manore, Michael Hughes, Ronald G. Center for Visualization and Analytics Renaissance Computing Institute's Engagement Facility North Carolina State University United States Transportation Research Board's Committee on Visualization in Transportation Independent Consultant AEC Visualization Visual Analytics Modeling and Simulation Institute for Transportation Research and Education North Carolina State University United States

ISBN: (纸本)9781450378451

This class will highlight how transportation planners, engineers and members of the Transportation Research Board's Committee on visualization in Transportation are using computer graphics techniques and interactive visual displays in their system planning, project design, construction and public involvement activities. Practical examples include the depiction of how three-dimensional models of alternate roundabout treatments in roadway designs are currently being used in conjunction with microsimulation models of driver-vehicle interactions to evaluate alternative crossing solutions for visually impaired pedestrians at roundabouts and channelized turn lanes. We would like to share some of our observations with the SIGGRAPH community to gain additional insight and foster future cross disciplinary interaction.

关键词： visualization

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Comparing Community Detection Methods in Brain Functional Connectivity Networks 4th

Comparing Community Detection Methods in Brain Functional Co...

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4th International Conference on Computational Intelligence, Cyber Security, and Computational Models, ICC3 2019

作者： Vangimalla, Reddy Rani Sreevalsan-Nair, Jaya Graphics-Visualization-Computing Lab E-Health Research Center International Institute of Information Technology - Bangalore 26/C Electronics City Bangalore560100 India

ISBN: (纸本)9789811596995

Brain functional networks are essential for understanding the functional connectome. computing the temporal dependencies between the regions of brain activities from the functional magnetic resonance imaging (fMRI) gives us the functional connectivity between the regions. The pairwise connectivities in matrix form correspond to the functional network (fNet), also referred to as a functional connectivity network (FCN). We start with analyzing a correlation matrix, which is an adjacency matrix of the FCN. In this work, we perform a case study of comparison of different analytical approaches in finding node-communities of the brain network. We use five different methods of community detection, out of which two methods are implemented on the network after filtering out the edges with weight below a predetermined threshold. We additionally compute and observe the following characteristics of the outcomes: (i) modularity of the communities, (ii) symmetrical node-partition between the left and right hemispheres of the brain, i.e., hemispheric symmetry, and (iii) hierarchical modular organization. Our contribution is in identifying an appropriate test bed for comparison of outcomes of approaches using different semantics, such as network science, information theory, multivariate analysis, and data mining. © 2020, Springer Nature Singapore Pte Ltd.

关键词： Semantics

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What if factories looked like forests? Redesigning the manufacturing industry 4.0 workplaces with an augmented reality inspired nature metaphor

What if factories looked like forests? Redesigning the manuf...

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2017 International Conference on Knowledge Technologies and Data-Driven Business Workshop, i-Know-WS 2017

作者： Barreiros, Carla Pammer, Viktoria Oberbichler, Ulf Veas, Eduardo Graz University of Technology Interactive Systems and Data Science Austria Know Center GmbH Ubiquitous Personal Computing Austria Alphagate GmbH Austria Know Center GmbH Knowledge Visualization Austria

In the Industry 4.0 environments, machines are becoming increasingly more complex, and tasks like machine configuration and maintenance, demand higher human expertise, thus operators have to be able to deal with such complex systems. In this paper we introduce an AR nature inspired metaphor - BioIoT- to communicate information about complex, real-time processes in an engaging, interactive and apparent manner. In addition, we present an Industry 4.0 use case scenario where the BioIoT concept can be applied. We emphasize the contributions of such concept in the future manufacturing industrial workplaces.

关键词： Industry 4.0

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A security framework for dynamic collaborative working environments

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Identity in the Information Society 2009年第2期2卷 171-187页

作者： Matthias Assel Stefan Wesner Alexander Kipp Intelligent Service Infrastructures High Performance Computing Center Stuttgart Stuttgart Germany Applications & Visualization High Performance Computing Center Stuttgart Stuttgart Germany

Moving away from simple data sharing within the science community towards cross-organizational collaboration scenarios significantly increased challenges related to security and privacy. They need to be addressed in order to make cross-organizational applications such as collaborative working environments a business proposition within communities such as eHealth, construction or manufacturing. Increasingly distributed scenarios where many different types of services need to be combined in order to implement semantically enriched business processes demand new approaches to security within such dynamic Virtual Organizations. The allocation of access rights need to be possible in an easy and controlled way in order to allow inexperienced users to maintain the information and ensure compliance e.g. with legal and privacy related regulations. In this paper the focus is how security concepts originating from the Grid domain have been applied for collaborative working environments. The chosen scenarios are a Virtual Laboratory for Infectious Diseases (ViroLab) and different collaborative environments from the engineering domain as defined within the CoSpaces project. The requirements from these scenarios are analyzed and a security model enabling such dynamic, secure and trustworthy collaborations is presented.

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Providing high-level control and expert assistance in the user interface presentation design 93

Providing high-level control and expert assistance in the us...

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Proceedings of the INTERCHI '93 Conference on Human Factors in computing Systems

作者： Kim, Won Chul Foley, James D. Department of Electrical Engineering and Computer Science The George Washington University Washington DC Graphics Visualization and Usability Center College of Computing Georgia Institute of Technology Atlanta GA

ISBN: (纸本)9051991339

Current user interface builders provide only low-level assistance, because they have knowledge of neither the application, nor the principles by which interface elements are combined effectively. We have developed a framework that unites the knowledge components essential for effective user interface presentation design. The framework consists of an application model (both a data model and a control model), a design process model that supports top-down iterative development, and graphic design knowledge that is used both to place dialog box elements such that their application dependent logical relationships are visually reinforced and to control design symmetry and balance. To demonstrate the framework's viability, we have constructed a tool based on encapsulated design knowledge that establishes high-level style preferences and provides expert assistance for the dialog box presentation design and menu structuring.

关键词： UI design process

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Discontinuous Galerkin Method for Linear Wave Equations Involving Derivatives of the Dirac Delta Distribution 13th

Discontinuous Galerkin Method for Linear Wave Equations Invo...

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13th International Conference on Spectral and High Order Methods, ICOSAHOM 2021

作者： Field, Scott E. Gottlieb, Sigal Khanna, Gaurav McClain, Ed Department of Mathematics Center for Scientific Computing & Visualization Research University of Massachusetts DartmouthMA United States Department of Physics University of Rhode Island KingstonRI United States

ISBN: (纸本)9783031204319

Linear wave equations sourced by a dirac delta distribution δ(x) and its derivative(s) can serve as a model for many different phenomena. We describe a discontinuous Galerkin (DG) method to numerically solve such equations with source terms proportional to ∂nδ∕∂xn. Despite the presence of singular source terms, which imply discontinuous or potentially singular solutions, our DG method achieves global spectral accuracy even at the source’s location. Our DG method is developed for the wave equation written in fully first-order form. The first-order reduction is carried out using a distributional auxiliary variable that removes some of the source term’s singular behavior. While this is helpful numerically, it gives rise to a distributional constraint. We show that a time-independent spurious solution can develop if the initial constraint violation is proportional to δ(x). Numerical experiments verify this behavior and our scheme’s convergence properties by comparing against exact solutions. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Wave equations

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Human Factors in Information visualization and Decision Support Systems

Human Factors in Information Visualization and Decision Supp...

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Mensch und Computer 2016, MuC 2016 - Workshopband - Human and Computer 2016, MuC 2016 - Workshop Proceedings

作者： Valdez, André Calero Brauner, Philipp Ziefle, Martina Kuhlen, Torsten Wolfgang Sedlmair, Michael Human-Computer Interaction Center RWTH Aachen University Germany Visual Computing Institute RWTH Aachen University Germany Visualization and Data Analysis Group TU Wien Austria

With the increase in data availability and data volume it becomes increasingly important to extract information and actionable knowledge from data. Information visualization helps the user to understand data by utilizing vision as a relatively parallel input channel to the user’s mind. Decision Support systems on the other hand help users in making information actionable, by suggesting beneficial decisions and presenting them in context. Both fields share a common need for understanding the interface between the computer and the human. This makes human factors research critical for both fields. Understanding limitations of human perception, cognition and action, as well as their variance must be understood to fully leverage information visualization and decision support. This article reflects on research agendas for investigating human factors in the aforementioned fields. Copyright © 2016 bei den Autoren.

关键词： Decision support systems

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