ABSTRACT In the pervasive/ubiquitous computing environment of the near future, we will have many computers per person and many sensors linking these computers to the real world. In the Infosphere project, we have been building systems software tools to support information flow-driven applications. We have proposed the Infopipe abstraction to link information producers to consumers. In addition to their basic function of transporting information, Infopipes manage and manipulate the concrete delivery properties of the information flowing through them, such as freshness. Infopipe creation and composition involve the specification of these properties and system resource management mechanisms to maintain them. The property specifications are translated automatically by the system into an actual implementation with the desired behavior. We have designed and implemented an Infopipe specification language, an XML-level intermediate language, and translators from a these specifications to executable code on a number of platforms, including C/sockets, CORBA AVStreams, Java RMI, and the Echo publish/subscribe middleware. Experimental measurements show a small additional overhead of automatically generated code compared to manually written code, but significant gains in portability, maintainability, and evolutionary development of both software tools and the code they generate. -------------------------- Biography of Calton Pu Calton Pu was born in Taiwan, but grew up in Brazil. He received his PhD from University of Washington in 1986 and served on the faculty of Columbia University and Oregon Graduate Institute. Currently, he is holding the position of Professor and John P. Imlay, Jr. Chair in Software at the College of Computing, Georgia Institute of Technology. He is leading the Infosphere project, building software tools to support information flow-driven applications such as digital libraries and electronic commerce. Infosphere builds on his previous and ongoing research interests. First, he has been working on next-generation operating system kernels to achieve high performance, adaptiveness, security, and modularity, using program specialization, software feedback, and domain-specific languages. This area has included projects such as Synthetix, Immunix, Microlanguages, and Microfeedback, applied to distributed multimedia and system survivability. Second, he has been working on new data and transaction management by extending database technology. This area has included projects such as Epsilon Serializability, Reflective Transaction Framework, and Continual Queries over the Internet. His collaborations include applications of these techniques in scientific research on macromolecular structure data, weather data, and environmental data, as well as in industrial settings. He has published more than 30 journal papers and book chapters, 100 conference and refereed workshop papers, and served on more than 60 program committees, including the co-PC chair of SRDS'95, co-general chair of ICDE'97, co-PC chair of ICDE'99, general chair of CIKM'01, co-PC chair of COOPIS?02, and co-PC chair of SRDS?03. He is currently an associate editor of DAPD, IJODL, and WWWJ. His research is currently funded by NSF, DARPA, Intel, and other sources.