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Welcome to the proceedings of UbiComp 2004. In recent years the ubiquitous computing community has witnessed a sign- cant growth in the number of conferences in the area, each with its own disti- tive characteristics. For UbiComp these characteristics have always included a high-quality technical program and associated demonstrations and posters that cover the full range of research being carried out under the umbrella of ubiq- tous computing. Ours is a broaddiscipline andUbiComp aims to be aninclusive forum that welcomes submissions from researchers with many di?erent ba- grounds. This year we received 145 submissions. Of these we accepted 26, an acceptance rate of just under 18%. Of course acceptance rate is simply a m- sure of selectivity rather than quality and we were particularly pleased this year to note that we had a large number of high-quality submissions from which to assemble the program for 2004. The broad nature of ubiquitous computing research makes reviewing Ubi- Comp submissions a particular challenge. This year we adopted a new process for review and selection that has, we hope, resulted in all authors obtaining - tremely detailed feedback on their submission whether or not it was accepted for publication. We believe the process enabled us to assemble the best pos- ble program for delegates at the conference. If you submitted a paper, we hope that you bene?ted from the feedback that your peers have provided, and if you attended UbiComp 2004 we hope that you enjoyed the technical program.
List of contents
The CareNet Display: Lessons Learned from an In Home Evaluation of an Ambient Display.- Personalized Peripheral Information Awareness Through Information Art.- Reminding About Tagged Objects Using Passive RFIDs.- Evaluating the Effects of Displaying Uncertainty in Context-Aware Applications.- The Error of Our Ways: The Experience of Self-Reported Position in a Location-Based Game.- Particle Filters for Location Estimation in Ubiquitous Computing: A Case Study.- Some Assembly Required: Supporting End-User Sensor Installation in Domestic Ubiquitous Computing Environments.- Rapid Authoring of Mediascapes.- CAMP: A Magnetic Poetry Interface for End-User Programming of Capture Applications for the Home.- Designing Capture Applications to Support the Education of Children with Autism.- 'This All Together, Hon?' Ubicomp in Non-office Work Environments.- Security and Trust in Mobile Interactions: A Study of Users' Perceptions and Reasoning.- WatchMe: Communication and Awareness Between Members of a Closely-Knit Group.- Everyday Encounters with Context-Aware Computing in a Campus Environment.- Cooperative Artefacts: Assessing Real World Situations with Embedded Technology.- I Sense a Disturbance in the Force: Unobtrusive Detection of Interactions with RFID-tagged Objects.- The NearMe Wireless Proximity Server.- The ContextCam: Automated Point of Capture Video Annotation.- MouseField: A Simple and Versatile Input Device for Ubiquitous Computing.- The Iterative Design Process of a Location-Aware Device for Group Use.- DOLPHIN: A Practical Approach for Implementing a Fully Distributed Indoor Ultrasonic Positioning System.- The Carrot Approach: Encouraging Use of Location Systems.- ActiveBelt: Belt-Type Wearable Tactile Display for Directional Navigation.- An Audio-BasedPersonal Memory Aid.- Infrastructures and Their Discontents: Implications for Ubicomp.- Opportunity Knocks: A System to Provide Cognitive Assistance with Transportation Services.
