UbiComp 2003: Ubiquitous Computing

1. Front Matter

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2. Location and Space

   1. Building World Models by Ray-Tracing within Ceiling-Mounted Positioning Systems

      • Robert K. Harle, Andy Hopper

      Pages 1-17

   2. On a Location Model for Fine-Grained Geocast

      • Frank Dürr, Kurt Rothermel

      Pages 18-35

   3. RightSPOT: A Novel Sense of Location for a Smart Personal Object

      • John Krumm, Gerry Cermak, Eric Horvitz

      Pages 36-43

   4. User-Friendly Surveying Techniques for Location-Aware Systems

      • James Scott, Mike Hazas

      Pages 44-53

3. Modeling and Inference

   1. Sto(ry)chastics: A Bayesian Network Architecture for User Modeling and Computational Storytelling for Interactive Spaces

      • Flavia Sparacino

      Pages 54-72

   2. Inferring High-Level Behavior from Low-Level Sensors

      • Donald J. Patterson, Lin Liao, Dieter Fox, Henry Kautz

      Pages 73-89

   3. Activity Zones for Context-Aware Computing

      • Kimberle Koile, Konrad Tollmar, David Demirdjian, Howard Shrobe, Trevor Darrell

      Pages 90-106

4. Context Awareness

   1. Context-Aware User Authentication – Supporting Proximity-Based Login in Pervasive Computing

      • Jakob E. Bardram, Rasmus E. Kjær, Michael Ø Pedersen

      Pages 107-123

   2. Secure Spontaneous Device Association

      • Tim Kindberg, Kan Zhang

      Pages 124-131

   3. AwareCon: Situation Aware Context Communication

      • Michael Beigl, Albert Krohn, Tobias Zimmer, Christian Decker, Philip Robinson

      Pages 132-139

   4. liquid: Context-Aware Distributed Queries

      • Jeffrey Heer, Alan Newberger, Chris Beckmann, Jason I. Hong

      Pages 140-148

   5. Is Context-Aware Computing Taking Control away from the User? Three Levels of Interactivity Examined

      • Louise Barkhuus, Anind Dey

      Pages 149-156

5. New Devices and Technologies

   1. Tools for Studying Behavior and Technology in Natural Settings

      • Stephen S. Intille, Emmanuel Munguia Tapia, John Rondoni, Jennifer Beaudin, Chuck Kukla, Sitij Agarwal et al.

      Pages 157-174

   2. Very Low-Cost Sensing and Communication Using Bidirectional LEDs

      • Paul Dietz, William Yerazunis, Darren Leigh

      Pages 175-191

   3. SPECs: Another Approach to Human Context and Activity Sensing Research, Using Tiny Peer-to-Peer Wireless Computers

      • Mik Lamming, Denis Bohm

      Pages 192-199

   4. A 2-Way Laser-Assisted Selection Scheme for Handhelds in a Physical Environment

      • Shwetak N. Patel, Gregory D. Abowd

      Pages 200-207

6. Domestic Environments and Healthcare

   1. Finding a Place for UbiComp in the Home

      • Andy Crabtree, Tom Rodden, Terry Hemmings, Steve Benford

      Pages 208-226

   2. New Perspectives on Ubiquitous Computing from Ethnographic Study of Elders with Cognitive Decline

      • Margaret Morris, Jay Lundell, Eric Dishman, Brad Needham

      Pages 227-242

   3. Practical Considerations of Context for Context Based Systems: An Example from an Ethnographic Case Study of a Man Diagnosed with Early Onset Alzheimer’s Disease

      • Tony Salvador, Ken Anderson

      Pages 243-255

UbiComp 2003, the 5th Annual Conference on Ubiquitous Computing, is the premier forum for presentation of research results in all areas relating to the - sign, implementation, deployment and evaluation of ubiquitous computing te- nologies. The conference brings together leading researchers, from a variety of disciplines, perspectives and geographical areas, who are exploring the impli- tions of computing as it moves beyond the desktop and becomes increasingly interwoven into the fabrics of our lives. This volume, the conference proceedings, contains the entire collection of high-quality full papers and technical notes from UbiComp 2003. There were 16 full papers in this year’s conference, selected by our international program committee from among 117 submissions. There were also 11 technical notes in the program: 8 taken from the 36 technical note submissions, and 3 that were adapted from full paper submissions. We are very grateful to Tim Kindberg and Bernt Schiele, our Technical Notes Co-chairs, and to all the authors and reviewers of both papers and technical notes who contributed to maintaining the high standards of quality for the conference. In addition to the full papers and technical notes, UbiComp 2003 also p- vided a number of other participation categories, including workshops, dem- strations, interactive posters, a panel, a doctoral colloquium and a video p- gram. While accepted submissions in these categories were also of high quality, timing and size constraints prevented us from including them in this volume.

• Ubiquitous Computing
• ad-hoc networks
• collaborative computing
• communications security
• context-aware systems
• distributed systems
• embedded systems
• handheld devices
• mobile computing
• pervasive computing
• privacy
• ubiquitous systems
• wearable devices

• Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, USA

  Anind K. Dey

• Pervasive Computing and User Interface Engineering, University of Duisburg-Essen, Germany

  Albrecht Schmidt

• Intel Research Seattle, Seattle, USA

  Joseph F. McCarthy

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