Now showing items 168-187 of 542

    • An Empirical Evaluation of Context-Sensitive Pose Estimators in an Urban Outdoor Environment 

      Endo, Yoichiro; Ulam, Patrick D.; Arkin, Ronald C.; Balch, Tucker; Powers, Matthew D. (Georgia Institute of Technology, 2005)
      When a mobile robot is executing a navigational task in an urban outdoor environment, accurate localization information is often essential. The difficulty of this task is compounded by sensor drop-out and the presence of ...
    • An Empirical Study of the Effect of Agent Competence on User Performance and Perception 

      Catrambone, Richard; Stasko, John T.; Xiao, Jun (Georgia Institute of Technology, 2004)
      We studied the role of the competence of a user interface agent/assistant that helped users to learn and use a new text editor. Participants in the study made a set of prescribed changes to a document via the editor with ...
    • Empirically Evaluating the Use of Animations to Teach Algorithms 

      Lawrence, Andrea Williams; Badre, Albert; Stasko, John T. (Georgia Institute of Technology, 1994)
      As algorithm animation systems become more widely available and easy to use, instructors must decide whether to utilize these systems to assist their teaching. Although these systems have generated excitement and interest ...
    • Enabling the Generation, Preservation & Use of Records and Memories of Everyday Life 

      Truong, Khai Nhut; Abowd, Gregory D. (Georgia Institute of Technology, 2002)
      Our daily lives provide us with a great deal of records and memories that we want to access at some point in the future. As a result, we often spend our time and effort trying to preserve much of these experiences. To ...
    • Enhancing the Classroom Learning Experience with Web Lectures 

      Day, Jason Allan; Foley, James D.; Groeneweg, Remco; Van der Mast, Charles A.P.G. (Georgia Institute of Technology, 2004)
      In this paper, we present our vision and initial research results on the use of web lectures to enhance the classroom learning experience. By using web lectures to present lecture material in advance of class, more in-class ...
    • Enhancing the Classroom Learning Experience with Web Lectures: A Quasi-Experiment 

      Day, Jason Allan; Foley, James D. (Georgia Institute of Technology, 2005)
      In this paper, we present continuing research into the use of web lectures to enhance the classroom learning experience. By using web lectures to present lecture material in advance of class, more in-class time can be spent ...
    • An Environment to Support User Interface Evaluation Using Synchronized Video and Event Trace Recording 

      Badre, Albert; Hudson, Scott E.; Santos, Paulo J. (Georgia Institute of Technology, 1993)
      This paper presents a simple but very powerful technique to support user interface evaluation along with a prototype open environment -- I-Observe, the Interface OBServation, Evaluation, Recording, and Visualization ...
    • Error Correction Techniques for Handwriting, Speech, and Other Ambiguous or Error Prone Systems 

      Mankoff, Jennifer C.; Abowd, Gregory D. (Georgia Institute of Technology, 1999)
      Interfaces which support natural inputs such as handwriting and speech are becoming more prevalent. However, these recognition-based interface techniques are error prone. Despite research efforts to improve recognition ...
    • An Ethical Adaptor: Behavioral Modification Derived from Moral Emotions 

      Arkin, Ronald C.; Ulam, Patrick D. (Georgia Institute of Technology, 2009)
      This paper presents the motivation, basis and a prototype implementation of an ethical adaptor capable of using a moral affective function, guilt, as a basis for altering a robot’s ongoing behavior. While the research ...
    • An Ethical Governor for Constraining Lethal Action in an Autonomous System 

      Arkin, Ronald C.; Ulam, Patrick D.; Duncan, Brittany (Georgia Institute of Technology, 2009)
      The design, prototype implementation, and demonstration of an ethical governor capable of restricting lethal action of an autonomous system in a manner consistent with the Laws of War and Rules of Engagement is presented.
    • Evaluating Animation as a Mechanism for Maintaining Peripheral Awareness 

      McCrickard, D. Scott; Stasko, John T.; Catrambone, Richard (Georgia Institute of Technology, 2000)
      Animation is becoming increasingly used to communicate information within some limited viewing area. Little is known, however, about the effectiveness and the possible distractions of animation used in this way. This article ...
    • Evaluating the InfoCanvas Peripheral Awareness System: A Longitudinal, In Situ Study 

      Stasko, John T.; McColgin, Dave; Miller, Todd; Plaue, Christopher Michael; Pousman, Zachary L. (Georgia Institute of Technology, 2005)
      A longitudinal, in situ study of the InfoCanvas, a prototype peripheral awareness system, was conducted. The InfoCanvas provides awareness of information through "information art", acting as a kind of electronic painting ...
    • Evaluation of a Multimodal Interface for 3D Terrain Visualization 

      Krum, David Michael; Omoteso, Olugbenga; Ribarsky, William; Starner, Thad; Hodges, Larry F. (Georgia Institute of Technology, 2002)
      This paper describes an evaluation of various interfaces for visual navigation of a whole Earth 3D terrain model. A mouse driven interface, a speech interface, a gesture interface, and a multimodal speech and gesture ...
    • Evaluation of Display Parameters Affecting User Performance of an Interactive Task in a Virtual Environment 

      McWhorter, Shane William; Hodges, Larry F.; Rodriguez, Walter E. (Georgia Institute of Technology, 1991)
      Although the popularity of virtual environments is widely known, little is known about the usability of virtual environment displays. This paper presents experimental data on the effect of virtual environment display ...
    • Evaluation of Movement Control Techniques for Immersive Virtual Environments 

      Bowman, Douglas A.; Koller, David; Hodges, Larry F. (Georgia Institute of Technology, 1996)
      We present a categorization of techniques for first-person movement or travel through immersive virtual environments, as well as a framework for evaluating the quality of different techniques for specific virtual environment ...
    • An Evaluation of Space-Filling Information Visualizations for Depicting Hierarchical Structures 

      Stasko, John T.; Catrambone, Richard; Guzdial, Mark; McDonald, Kevin (Georgia Institute of Technology, 2000)
      A variety of information visualization tools have been developed recently, but relatively little effort has been made to evaluate the effectiveness and utility of the tools. This article describes results from two empirical ...
    • An Evaluation Of The Comprehensibility and Usability Of a Design Method For Ubiquitous Computing Applications 

      Iachello, Giovanni; Abowd, Gregory D. (Georgia Institute of Technology, 2005)
      We have recently proposed a design process framework that assists the practitioner in tackling the privacy and security issues of ubiquitous computing (ubicomp) applications during their development. In this report, we ...
    • Evaluation of the CyberGlove(TM) as a Whole Hand Input Device 

      Kessler, Gregory Drew; Walker, Neff; Hodges, Larry F. (Georgia Institute of Technology, 1995)
      We present a careful evaluation of the sensor characteristics of the CyberGlove(TM) model CG1801 whole hand input device. In particular, we conducted an experimental study that investigated level of sensitivity of the ...
    • Evaluation of the Effects of Frame Time Variation on VR Task Performance 

      Watson, Benjamin A. (Benjamin Allen); Spaulding, Victoria; Walker, Neff; Ribarsky, William (Georgia Institute of Technology, 1996)
      We present a first study of the effects of frame time variations, in both deviation around mean frame times and period of fluctuation, on task performance in a virtual environment (VE). Chosen are open and closed loop tasks ...
    • Exact Ray-Traced Animation Frames Generated by Reprojection 

      Adelson, Stephen Joel; Hodges, Larry F. (Georgia Institute of Technology, 1993)
      The majority of computer graphics images are generated as part of a sequence of animation frames. The usual approach for producing these images is to render each frame as if it were a single, isolated image. A technique ...