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IEEE Symposium on human Centric Computing Languages and Environments

作者： Kibum Kim J.M. Carroll M.B. Rosson Center for Human-Computer Interaction and Department of Computer Science Virginia Technology Blacksburg VA USA

Currently, the two main techniques for achieving personalization on the Internet involve direct manipulation and software agents. While both direct manipulation and software agents are aimed at permitting end-users to finish tasks rapidly, efficiently, and easily, their methodologies differ The central controversy involving these personalization techniques derives from the amount of control that each grants to - or withholds from - the end-user. Direct manipulation interfaces afford control and predictability to end-users. Alternatively, the use of software agents captures or records user's personalized preferences by employing artificial intelligence techniques. In this empirical study, two end-user Web personalization tools are evaluated. One of them, WebPersonalizer, is an agent-based end-user personalization tool; the other, AntWorld, is a collaborative recommendation tool which provides direct manipulation interfaces. The purpose of this study is to determine the strengths and weaknesses of each opposed technique-direct manipulation and software agents - as a Web personalization assistant. In addition, we suggest the hybrid paradigm for EUP (end-user programming).

关键词： Software agents Information retrieval Internet Intelligent agent humans Information systems computer science Centralized control Databases History

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Staying in the flow with zoomable user interfaces

Staying in the flow with zoomable user interfaces

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Conference on human Factors in Computing Systems

作者： Good, Lance Xerox Palo Alto Research Center 3333 Coyote Hill Rd Palo Alto CA 94304 United States Human-Computer Interaction Lab Computer Science Department University of Maryland College Park MD 20742 United States

ISBN: (纸本)1581134541

This research aims to investigate a collection of interactions in 2D workspaces with the goal of helping users stay in the flow of their activity. These interactions will be explored in the context of two software tools designed to support information work. The first tool, Niagara, addresses the early phases of this work that involve organization and synthesis. CounterPoint, the second tool, targets the later stages of this work that concern the authoring, delivery, and understanding of presentations.

关键词： User interfaces

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Intention superiority effect: A context-switching account

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Cognitive Systems Research 2002年第1期3卷 57-65页

作者： Lebiere, Christian Lee, Frank J. Human Computer Interaction Institute Carnegie Mellon University Pittsburgh PA 15213 United States Department of Cognitive Science Rensselaer Polytechnic Institute Troy NY 12180 United States

Intention superiority effect [J. Exp. Psychol. Learn. Mem. Cogn. 19 (1993) 1211;J. Exp. Psychol. Learn. Mem. Cogn. 24 (1998) 350] is the finding that the times to retrieve memory items related to uncompleted or partially completed intentions are faster than for those with no associated intentions. However, this relationship reverses when the intended tasks are completed [J. Exp. Psychol. Learn. Mem. Cogn. 24 (1998) 350;Mem. Cogn. 27 (1999) 320]. That is, the times to retrieve memory items related to completed intentions are slower than for those with no associated intentions. In this paper, we present a computational account of the intention superiority effect using the ACT-R cognitive architecture [Atomic components of thought. Mahwah, NJ: Lawrence Erlbaum Associates, 1998]. Our modeling approach is based on the idea that uncompleted or partially completed intentions are available as context in the current goal, and they prime related memory items while inhibiting unrelated memory items. However, once the intended tasks are completed, they are removed from the current goal, which produces an inhibitory effect on memory items associated with them. We describe an ACT-R model that is able to reproduce all of the effects reported in Marsh et al. [J. Exp. Psychol. Learn. Mem. Cogn. 24 (1998) 350]. © 2002 Elsevier science B.V. All rights reserved.

关键词： ACT-R Intention superiority effect Prospective memory

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Corrigendum to “Localizing significance of temporal intermittent rhythmic delta activity (TIRDA) in drug-resistant focal epilepsy” [Clin. Neurophysiol. 114 (2003) 70–78]

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Clinical Neurophysiology 2003年第5期114卷 954-954页

作者： Giancarlo Di Gennaro Pier Paolo Quarato Paolo Onorati Giovanni B. Colazza Francesco Mari Liliana G. Grammaldo Olga Ciccarelli Nicolò G. Meldolesi Fabio Sebastiano Mario Manfredi Vincenzo Esposito Epilepsy Surgery Unit IRCCS “NEUROMED” Pozzilli (IS) Italy Child Developmental Center San Raffaele Pisana-Tosinvest Sanità Rome Italy Department of Human Physiology and Pharmacology University “La Sapienza” Rome Italy Department of Neurological Sciences University “La Sapienza” Rome Italy NMR Research Unit Institute of Neurology Queen Square London UK Department of Computer and Systems Science University “La Sapienza” Rome Italy Department of Neurosurgery University “La Sapienza” Rome Italy

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A radial focus+context visualization for multi-dimensional functions

A radial focus+context visualization for multi-dimensional f...

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IEEE Conference on Visualization

作者： S. Jayaraman C. North Center for Human Computer Interaction Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg VA USA

The analysis of multidimensional functions is important in many engineering disciplines, and poses a major problem as the number of dimensions increases. Previous visualization approaches focus on representing three or fewer dimensions at a time. This paper presents a new focus+context visualization that provides an integrated overview of an entire multidimensional function space, with uniform treatment of all dimensions. The overview is displayed with respect to a user-controlled polar focal point in the function's parameter space. Function value patterns are viewed along rays that emanate from the focal point in all directions in the parameter space, and represented radially around the focal point in the visualization. Data near the focal point receives proportionally more screen space than distant data. This approach scales smoothly from two dimensions to 10-20, with a 1000 pixel range on each dimension.

关键词： Multidimensional systems Data visualization Performance analysis System performance human computer interaction computer science Chromium User interfaces Graphical user interfaces computer graphics

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M-Education: bridging the gap of mobile and desktop computing

M-Education: bridging the gap of mobile and desktop computin...

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IEEE International Workshop on Wireless, Mobile and Ubiquitous Technology in Education (WMUTE)

作者： U. Farooq W. Schafer M.B. Rosson J.M. Carroll Center for Human-Computer Interaction and Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg VA USA

Mobile education or M-Education is a new conceptual paradigm in the use of mobile and wireless technologies for education. M-Education encourages distributed peer collaboration over wireless devices and desktop computers to create opportunities for discovery and education in the field and community. It is a project-oriented approach that will use a wireless virtual community to facilitate the learning activities of teachers, students, and peers through collaboration in a distributed environment. M-Education is significantly different from existing mobile learning systems in that it leverages its collaborative activities from an existing desktop-based online virtual community (MOOsburg), and thus offers a range of collaboration opportunities, such as synchronous and asynchronous interactions with peers, and viewing or changes to persistent data. In this paper, an innovative use of wireless and mobile technologies in education is explored as part of a scenario-based design process.

关键词： Mobile computing Handheld computers computer science education Educational technology Online Communities/Technical Collaboration Application software Distributed computing Space technology Collaborative tools Collaborative work

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Visualization schemas for flexible information visualization

Visualization schemas for flexible information visualization

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IEEE Symposium on Information Visualization (INFOVIS)

作者： C. North N. Conklin V. Saini Center for Human Computer Interaction Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg VA USA

Relational databases provide significant flexibility to organize, store, and manipulate an infinite variety of complex data collections. This flexibility is enabled by the concept of relational data schemas, which allow data owners to easily design custom databases according to their unique needs. However, user interfaces and information visualizations for accessing and utilizing databases have not kept pace with this level of flexibility. This paper introduces the concept of visualization schemas, based on the Snap-Together Visualization model, which are analogous to relational data schemas. Visualization schemas enable users to rapidly construct customized multiple-view visualizations for databases in a similarly flexible fashion without programming. Since the design of appropriate visualizations for a given database depends on the data schema, visualization schemas are a natural analogy to the data schema concept.

关键词： Data visualization Visual databases Relational databases User interfaces Database systems Design methodology human computer interaction computer science Appropriate technology Bioinformatics

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An Evaluation of Mobile Phone Text Input Methods 02

An Evaluation of Mobile Phone Text Input Methods

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Australasian User Interface Conference

作者： Lee Butts Andy Cockburn Human-Computer Interaction Lab Department of Computer Science University of Canterbury Christchurch New Zealand

ISBN: (纸本)0909925852

The rapid growth of Short Message Service (SMS) text messaging is generating substantial commercial and research interest in fast and efficient text input methods for mobile devices. This paper presents an empirical study that compares three mobile phone text input techniques. The methods are 'multi-press input with timeout', 'multi-press input with a next button', and 'two-key'. The study shows that there is a significant speed difference, in words per minute (wpm), between the methods. The multi-press with next method provided the most rapid text input at 7.2 wpm, followed by multi-press with timeout at 6.4 wpm. The two-key method was the slowest at 5.5 wpm. These results are much slower than those predicted by Fitts' Law models reported in prior research. Subjective results regarding learnability, errors and efficiency showed no significant difference between the methods.

关键词： text input mobile phone keypad input text messaging text input Mobile phones Text Messages Time out Speed Differential

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The Design Collaboratorium

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ACM Transactions on computer-human interaction 2002年第2期9卷 152-169页

作者： Bødker, Susanne Buur, Jacob University of Aarhus Department of Computer Science Centre for Human-Machine Interaction DK-8200 Aarhus N Denmark Mads Clausen Institute for Product Innovation University of Southern Denmark DK-6400 Sønderborg Denmark

The “design collaboratorium” is a new usability practice that has been developed in an action research project between three industrial usability labs and a university. The design collaboratorium has been developed as a reaction to the failing capabilities of classical usability methods to cope with ubiquitous technologies. It has borrowed elements from participatory design and developed them further to become useful in large-scale industrial development organizations. The design collaboratorium will be presented through examples from a joint project: a vision project concerning wastewater treatment technology. In light of the case, we will discuss the philosophy underlying the design collaboratorium in further detail: the collaboration between active participants, the role of design artifacts, and the room as a meeting ground. Finally we lay out the working method and propose directions for future usability competencies. © 2002, ACM. All rights reserved.

关键词： Cooperative design Design human Factors ubiquitous and mobile technology usability practice user interface methodology

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Using HCI techniques to design a more usable programming system

Using HCI techniques to design a more usable programming sys...

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IEEE Symposium on human Centric Computing Languages and Environments

作者： J.F. Pane B.A. Myers L.B. Miller Computer Science Department and Human Computer Interaction Institute Carnegie Mellon University Pittsburgh PA USA

A programming system is the user interface between the programmer and the computer. Programming is a notoriously difficult activity, and some of this difficulty can be attributed to the user interface as opposed to other factors. Historically, the designs of programming languages and tools have not emphasized usability. This paper describes the process we used to design HANDS, a new programming system for children that focuses on usability, where HCI knowledge, principles, and methods guided all design decisions. The features of HANDS are presented along with their motivations from prior empirical research on programmers and new studies conducted by the authors. HANDS is an event-based language that features a concrete model for computation, provides operators that match the way non-programmers express problem solutions, and includes domain-specific features for the creation of interactive animations and simulations. In user tests, children using HANDS performed significantly better than children using a reduced-feature version of the system where more traditional methods were required to solve tasks.

关键词： human computer interaction User interfaces Programming profession Usability Computational modeling computer interfaces computer languages Design methodology Concrete Animation

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