WelcometotheproceedingsofPervasive2005, The3rdInternationalConference on Pervasive Computing. We were honored to serve as chairs in this conference series, which was founded in 2002 and is now emerging as one of the most respected venues for publication of research on pervasive and ubiquitous c- puting. The conference is attracting research submissions of very high quality from all over the world, and from researchers representing a variety of disciplines and perspectives. We thank everybody who submitted their papers to Pervasive, demonstrating the extensive work going on in this area; and the Program C- mittee and our external reviewers who spent countless hours providing feedback and guidance in order to create the ?nal program. This year we received 130 submissions. By the end of the review process, we had 566 reviews on ?le, as well as long email discussion threads for each paper. In an initial phase we had each paper reviewed by two members of the Program Committee and two external reviewers. In a second phase, each paper wasdiscussedbyitsfourreviewerstoreachconsensusastoitstechnicalmerit. At the end of this phase, the top-rated papers as well as those that were found to be most controversial were selected for discussion at the PC meeting and reviewed by an additional PC member. The result being that each paper discussed in the PC meeting had 5 reviews and was read by three people who participated in the meeting, leading to a very informed and lively discussion

This book constitutes the refereed proceedings of the Second International Symposium on Handheld and Ubiquitous Computing, HUC 2000, held in Bristol, UK in September 2000. The 18 revised full papers presented were carefully reviewed and selected from 70 submissions. The book offers topical sections on intelligent environments, user experience, multimedia augmentation, location-based services, context-aware messaging, intelligent devices, infrastructure engineering, and wearable computing.

This book constitutes the refereed proceedings of the First International Symposium on Handheld and Ubiquitous Computing, HUC'99, held in Karlsruhe, Germany in September 1999.The 23 revised full papers presented together with four invited keynote contributions, 26 reviewed posters, and two panel statements were carefully reviewed and selected from a large number of paper submissions. The papers are organized in topical sections on handheld and wearable appliances, location-based services, smart devices and smart environments, handhelds in distributed systems, handheld and wearable CSCW, context-aware mobile applications, interacting with environment, and interacting with handhelds.