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25th SIGCHI Conference on Human Factors in Computing Systems 2007, CHI 2007

作者： Dawe, Melissa Department of Computer Science Center for LifeLong Learning and Design University of Colorado Boulder CO 80309 United States

ISBN: (纸本)1595936424

In this paper I describe an ongoing multi-stage, participatory design study with individuals with cognitive disabilities and their family caregivers. I use a technology probe to inspire families to co-design a picture-based remote communication system. The technology platform is a *** phone.. I will present early findings from this study and discuss how it was a successful approach to engage with individuals with significant cognitive disabilities as co-designers of their own technology.

关键词： Human computer interaction

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Desperately seeking simplicity: How young adults with cognitive disabilities and their families adopt assistive technologies

Desperately seeking simplicity: How young adults with cognit...

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CHI 2006: Conference on Human Factors in Computing Systems

作者： Dawe, Melissa Department of Computer Science Center for LifeLong Learning and Design University of Colorado Boulder Boulder CO 80309

ISBN: (纸本)1595931783

A surprisingly high percentage of assistive technology devices (35% or more) are purchased, but not successfully adopted. Through semi-structured interviews with a dozen families, we have come to understand the role technology plays in the lives of families who have a young adult with cognitive disabilities, and how families find, acquire, and use these technologies. This study addresses gaps in existing research and informs future efforts in assistive technology design. design implications include the importance of simplicity not only in technology function but in configuration, documentation, maintenance, and upgrade or replacement;as well as the need for designers to use methods that consider the multiple individuals and stages involved in the technology adoption process. Copyright 2006 ACM.

关键词： Human engineering

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designing technology for people with cognitive impairments

Designing technology for people with cognitive impairments

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Conference on Human Factors in Computing Systems, CHI EA 2006

作者： McGrenere, Joanna Sullivan, Jim Baecker, Ronald M. Department of Computer Science University of British Columbia Vancouver Canada Cognitive Levers Project Center for Lifelong Learning and Design University of Colorado Boulder CO United States Knowledge Media Design Institute Department of Computer Science University of Toronto Toronto ON Canada

ISBN: (纸本)1595932984

Welcome to the CHI 2006 Extended Abstracts. We hope that you will enjoy this year's extended abstracts and the changes that we have made. For the first time this year, we encouraged submissions from six different sub-communities of the human-computer interaction (HCI) field: design;education;engineering;management;research and usability. The intent was to make sure that the technical program included elements that would be of interest to the broad HCI world. We especially sought Experience Reports, Panels, SIGs, and HCI Overviews. Submissions to each of these were carefully reviewed by the Conference Committee and their respective Community Chairs. These Extended Abstracts include these new or modified venues as well as materials from other traditional CHI venues.

关键词： Human computer interaction

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TRACKING CONTROL IN THE PRESENCE OF NONLINEAR DYNAMIC FRICTIONAL EFFECTS: ROBOT EXTENSION

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Asian Journal of Control 2008年第3期1卷

作者： M. Feemster D.M. Dawson A. Behal W. Dixon Matthew Feemster received the B.S degree in Electrical Engineering from Clemson University Clemson South Carolina in December 1994. Upon graduation he remained at Clemson University and received the M.S. degree in Electrical Engineering in 1997. During this time he also served as a research/teaching assistant. His research work focused on the design and implementation of various nonlinear control algorithms with emphasis on the induction motor and mechanical systems with friction present. He is currently working toward his Ph.D. degree in Electrical Engineering at Clemson University. Darren M. Dawson was born in 1962 in Macon Georgia. He received an Associate Degree in Mathematics from Macon Junior College in 1982 and a B.S. Degree in Electrical Engineering from the Georgia Institute of Technology in 1984. He then worked for Westinghouse as a control engineer from 1985 to 1987. In 1987 he returned to the Georgia Institute of Technology where he received the Ph.D. Degree in Electrical Engineering in March 1990. During this time he also served as a research/teaching assistant. In July 1990 he joined the Electrical and Computer Engineering Department and the Center for Advanced Manufacturing (CAM) at Clemson University where he currently holds the position of Professor. Under the CAM director's supervision he currently leads the Robotics and Manufacturing Automation Laboratory which is jointly operated by the Electrical and Mechanical Engineering departments. His main research interests are in the fields of nonlinear based robust adaptive and learning control with application to electro-mechanical systems including robot manipulators motor drives magnetic bearings flexible cables flexible beams and high-speed transport systems. Aman Behal was born in India in 1973. He received his Masters Degree in Electrical Engineering from Indian Institute of Technology Bombay in 1996. He is currently working towards a Ph.D in Controls and Robotics at Clemson University. His research focuses on the control of no

In this paper, we extend the observer/control strategies previously published in [25] to an n -link, serially connected, direct drive, rigid link, revolute robot operating in the presence of nonlinear friction effects modeled by the Lu-Gre model. In addition, we also present a new adaptive control technique for compensating for the nonlinear parameterizable Stribeck effects. Specifically, an adaptive observer/controller scheme is developed which contains a feedforward approximation of the Stribeck effects. This feedforward approximation is used in a composite controller/observer strategy which forces the average square integral of the position tracking error to an arbitrarily small value. Experimental results are included to illustrate the performance of the proposed controllers.

关键词： Friction compensation nonlinear control

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SUPPORTING SELF-DIRECTED LEARNERS AND learning COMMUNITIES WITH SOCIOTECHNICAL ENVIRONMENTS

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Research and Practice in Technology Enhanced learning 2006年第1期1卷 31-64页

作者： GERHARD FISCHER MASANORI SUGIMOTO Center for LifeLong Learning and Design (L3 D) Department of Computer Science University of Colorado 430 UCB Boulder CO 80309-0430 USA Interaction Technology Lab. Department of Frontier Sciences University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 277-8561 Japan

Making learning part of life is an essential challenge for inventing the future of our societies. Lifelong learning is a necessity rather than a possibility or a luxury to be considered. Self-directed learning (often occurring as learning on demand in response to breakdowns) is the dominant form of lifelong learning. The power of the unaided individual mind is highly overrated. Although society often thinks of creative individuals as working in isolation, learning and creativity result in large part from the interaction and collaboration with other individuals. Much human creativity is social, and learning communities are needed to cope with the challenges of making learning part of life. This paper articulates existing problems in our current and future world requiring lifelong and self-directed learning and learning communities. It defines conceptual frameworks and it describes four innovative computational environments: (1) domain-oriented design environments, (2) critiquing systems, (3) the Envisionment and Discovery Collaboratory, and (4) Caretta. The paper concludes by providing a set of challenges for the future use of technology to enhance learning based on the conceptual frameworks and the experience and assessment of our system development efforts.

关键词： Self-directed learning lifelong learning learning on demand collaborative learning integration of working and learning critiquing breakdowns simulation change symmetry of ignorance gift-wrapping approach of using technology sociotechnical environments meta-design

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Weapons of Magic: Afghan Women Asserting Voice via the Net

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Journal of computer-Mediated Communication 2006年第2期8卷

作者： Beverly Bickel Director of the English Language Center at the University of Maryland Baltimore County (UMBC) and a doctoral student in the Language Literacy and Culture program at UMBC. Her research interests focus on the social construction of cross-cultural and oppositional knowledge and discourses through computer-mediated communications and include collaborative teaching and learning across discipline and national boundaries. Her own teaching and curriculum design experiences span early childhood through university level programs focused on ESOL literacy and language. She has worked with teachers from the US and abroad on inquiry-based professional development for K-12 schools community-based organizations community colleges and universities.

In the global struggle over discourse and knowledge after 9/11, the voices of otherwise silenced women in Afghanistan were significantly amplified on the Internet. *** demonstrates how a Web site contended with discourses of fundamentalism and war while envisioning democracy and constructing new leadership identities for women.

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A Contour-Based Moving Object Detection and Tracking

A Contour-Based Moving Object Detection and Tracking

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Joint IEEE International Workshop on Visual Surveillance and Performance Evaluation of Tracking and Surveillance

作者： M. Yokoyama T. Poggio Advanced LSI Design & Development Division SoC Business Center Sony Corporation Tokyo Japan Center for Biological and Computational Learning Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge MA USA

We propose a fast and robust approach to the detection and tracking of moving objects. Our method is based on using lines computed by a gradient-based optical flow and an edge detector. While it is known among researchers that gradient-based optical flow and edges are well matched for accurate computation of velocity, not much attention is paid to creating systems for detecting and tracking objects using this feature. In our method, extracted edges by using optical flow and the edge detector are restored as lines, and background lines of the previous frame are subtracted. Contours of objects are obtained by using snakes to clustered lines. Detected objects are tracked, and each tracked object has a state for handling occlusion and interference. The experimental results on outdoor-scenes show fast and robust performance of our method. The computation time of our method is 0.089 s/frame on a 900 MHz processor.

关键词： Object detection Image motion analysis Image edge detection Lighting Optical sensors Optical computing Geophysics computing Robustness Biomedical optical imaging Active contours

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Development of hands-on CFD educational interface for undergraduate engineering courses and laboratories

Development of hands-on CFD educational interface for underg...

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ASEE 2004 Annual Conference and Exposition, "Engineering Researchs New Heights"

作者： Stern, Fred Xing, Tao Yarbrough, Don Rothmayer, Alric Rajagopalan, Ganesh Otta, Shourya Prakash Caughey, David Bhaskaran, Rajesh Smith, Sonya Hutchings, Barbara Moeykens, Shane Hydraulic Laboratory University of Iowa Center for Evaluation and Assessment Dept. of Educational Measurement University of Iowa College of Education Department of Aerospace Engineering Sibley Sch. Mech. and Aerosp. Eng. Cornell University Swanson Eng. Simulation Program Sibley Sch. Mech. and Aerosp. Eng. Cornell University Mechanical Engineering Department Howard University Computer Learning and Design Center Coll. of Eng. Arch. and Comp. Sci. Fluent Inc.

The development of an educational interface for hands-on student experience with computational fluid dynamics (CFD) for undergraduate and engineering courses and laboratories is discussed. The design of the educational interface teaches students CFD methodology and procedures through interactive implementation that automates the CFD process following a step-by-step approach. Generalizations of CFD for pipe, nozzle and airfoil flows facilitate their use at different universities with different applications, conditions and exercise notes. Evaluation indicates areas of strength and strategies for improvements and more effective implementation.

关键词： Engineering education

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Desert Island: Software Engineering—A Human Activity

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Automated Software Engineering 2003年第2期10卷 233-237页

作者： Fischer, Gerhard Center for LifeLong Learning and Design (L3D) Department of Computer Science University of Colorado Boulder USA

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Transcending the information given: designing learning environments for informed participation

Transcending the information given: designing learning envir...

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International Conference on computers in Education

作者： G. Fischer J. Ostwald Department of Computer Science Center for LifeLong Learning and Design (L3D) University of Colorado Boulder CO USA

Informed participation is an approach for community-based learning and design in which all participants actively contribute toward the framing and solving of complex and multidisciplinary problems. Informed participants go beyond the information given to explore large problem spaces, learn from their peers, and create new understandings. Informed participation requires social changes as well as new interactive systems that provide the opportunity and resources for social debate and discussion rather than merely delivering predigested information to participants. This paper describes courses-as-seeds as an application of informed participation to university-level courses. This application demonstrates key aspects of our approach and highlights direction for future research.

关键词： Collaborative work TV Collaboration Problem-solving Knowledge management computer science Space exploration Interactive systems Collaborative tools Humans

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