Available at The Journalo f www.EisevierComputerScience.com Systems and POWERED BY SCIENCE Goinecre Software The Journal of Systems and Software 69 (2004) 297-298 www.elsevier.com/locate/jss Contents Volume 69 Contents Service provider oriented management systems over open cellular network infrastructures P. Demestichas, V. Stavroulaki, V. Tountopoulos, M. Theologou and N. Mitrou An adaptive flow control with the re-transmission policy over the server—proxy—client networking environment C.-M. Huang and C.-K. Chang Parameter driven synthetic web database generation P. Priyadarshini, F. Qin, E.-P. Lim and W.-K. Ng Efficient trip generation with a rule modeling system for crew scheduling problems C. Goumopoulos and E. Housos Viewpoints of DSP software and service architectures A. Purhonen, E. Niemela and M. Matinlassi Content-aware cooperative caching for cluster-based web servers W.H. Ahn, W.J. Kim and D. Park Designing a high-performance database engine for the ‘Db4XML’ native XML database system S. Sipani, K. Verma, J.A. Miller and B. Aleman-Meza Minimum distance queries for time series data S. Lee, D. Kwon and S. Lee New methods for redistributing slack time in real-time systems: applications and comparative evaluations R.M. Santos, J. Urriza, J. Santos and J. Orozco Architecture-level modifiability analysis (ALMA) P. Bengtsson, N. Lassing, J. Bosch and H. van Vliet EMBOT: An enhanced motion-based object tracker M. Zaki, M.Y. El Nahas and M. Yousset Location management in cellular mobile computing systems with dynamic hierarchical location databases G.-H. Li, K.-Y. Lam, T.-W. Kuo and S.-W. Lo Real-time broadcast algorithm for mobile computing S.-H. Lim and J.-H. Kim Efficient validation of mobile transactions in wireless environments V.C.S. Lee. K. Wa Lam and T.-W. Kuo Brute force web search for wireless devices using mobile agents K.G. Zerfiridis and H.D. Karatza doi:10.1016/S0164-1212(03)00288 Guest editorial Ubiquitous computing J.J. Barton, R. Cerqueira and M. Fontoura Roam, a seamless application framework H.-h. Chu, H. Song, C. Wong, S. Kurakake and M. Katagiri Tooling and system support for authoring multi-device applications G. Banavar, L.D. Bergman, Y. Gaeremynk, D. Soroker and J. Sussman Extending tuplespaces for coordination in interactive workspaces B. Johanson and A. Fox The BEACH application model and software framework for synchronous collaboration in ubiquitous computing environments P. Tandler