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The computing grid no longer encompasses only traditional computers to perform coordinated tasks, as also low-end devices are now considered active members of the envisioned pervasive grid. Wireless sensor networks play an important role in this vision, since they provide the means for gathering vast amounts of data from physical phenomena. However, the current integration of wireless sensor networks and the grid is still primitive; one important aspect in this integration is providing higher-level abstractions for the development of applications, since accessing the data from wireless sensor networks currently implies dealing with very low-level constructs. We propose TinySOA, a service-oriented architecture that allows programmers to access wireless sensor networks from their applications by using a simple service-oriented API via the language of their choice. We show an implementation of TinySOA …