• sTuples: semantic tuple spaces

  • SOUPA: standard ontology for ubiquitous and pervasive applications

  • Processing continual range queries over moving objects using VCR-based query indexes

  • Design and implementation of an extensible rule processing system for wearable computing

  • Enforcing policies in pervasive environments

  • A middleware infrastructure for building mixed reality applications in ubiquitous computing environments

  • Vision-based interfaces for mobility

  • Organizing ad hoc agents for human-agent service matching

  • A framework for energy-saving data gathering using two-phase clustering in wireless sensor networks

  • Challenges and lessons learned in building a practical smart space