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Communications in mobile and frequently-disconnected sensor networks are characterized by low-bandwidth radios, unreliable links, and disproportionately high energy costs compared to other system operations. Therefore, we must use as efficiently as possible any periods of connectivity that we have. For this reason, nodes in these networks need mechanisms that organize data to streamline search operations, local computation, and communications. This work proposes a Data Abstraction Layer (DALi),doi:10.1145/1247660.1247674 dblp:conf/mobisys/SadlerM07 fatcat:jyftppahhncmrifraj6tnap5ly