We cordially welcome you to the proceedings of the 2007 International S- posium on Ubiquitous Computing Systems (UCS) held at Akihabara, Tokyo, Japan. UCS has become a symposium for the dissemination of state-of-the-art research and engineering practices in ubiquitous computing with particular - phasis on systems and software. UCS 2007 was the fourth of this series of int- nationalsymposia.ThiswastheyearfortheNextGenerationNetwork(NGN)to be commercially launched so that the Internet could become the infrastructure forcommunicationsandcomputingsubstitutingtheNGNintelephonenetworks. The maturity of the Internet encourages the research and development of the nextcomputing systems,where ubiquitous computing is recognizedasone ofthe most promising computing paradigms. This symposium was organized by IPSJ SIGUBI, IEICE USN and UCN, Korea, in cooperation with the IEEE Tokyo Section, IPSJ SIGEMB, IEICE Smart Info-media Systems Technical Group, and Human Interface Society. It was also sponsored by Ubiquitous Networking Forum, Nokia, NTT, SCAT, IISF and TAF. Thisyear,wehad96submissionsfrom18countries.TheProgramCommittee reviewed all the papers carefully and then selected 16 full papers and 8 short papers. The very low acceptance rate of about 22.6% clearly demonstrates the high quality of the conference, and this tradition will continue in the upcoming conferences. Two distinguished speakers were also invited for keynote speeches, who enlightened the audience on ubiquitous computing and applications. The high-quality technical program of UCS 2007 depends very much on the precise and stringent review process. The Technical Program Committee c- sistedof62excellentmembers.Mostreviewswarealmostofjournalpaperreview quality, and the paper selection was very serious and strict. Along with the symposium, we also o?ered a workshop and a poster session.

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Bibliographic Information

Book Title: Ubiquitous Computing Systems
Book Subtitle: 4th International Symposium, UCS 2007, Tokyo, Japan, November 25-28, 2007, Proceedings
Editors: Haruhisa Ichikawa, We-Duke Cho, Ichiro Satoh, Hee Yong Youn
Series Title: Lecture Notes in Computer Science
DOI: https://doi.org/10.1007/978-3-540-76772-5
Publisher: Springer Berlin, Heidelberg
eBook Packages: Computer Science, Computer Science (R0)
Copyright Information: Springer-Verlag Berlin Heidelberg 2007
Softcover ISBN: 978-3-540-76771-8Published: 12 November 2007
eBook ISBN: 978-3-540-76772-5Published: 02 November 2007
Series ISSN: 0302-9743
Series E-ISSN: 1611-3349
Edition Number: 1
Number of Pages: XIII, 307
Topics: Computer Communication Networks, User Interfaces and Human Computer Interaction, Computer Systems Organization and Communication Networks, Software Engineering, Special Purpose and Application-Based Systems, Information Systems Applications (incl. Internet)

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Table of contents (24 papers)

Front Matter

UCS2007

Security and Privacy

Context Awareness

Sensing Systems and Sensor Network

Middleware

Modeling and Social Aspects

Smart Devices

Other Volumes

Ubiquitous Computing Systems

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