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Zab is a crash-recovery atomic broadcast algorithm we designed for the ZooKeeper coordination service. ZooKeeper implements a… Expand Data deduplication is an essential and critical component of backup systems. Essential, because it reduces storage space… Expand We study a manufacturer that faces a supplier privileged with private information about supply disruptions. We investigate how… Expand In this paper, we define and explore proofs of retrievability (PORs). A POR scheme enables an archive or back-up service (prover… Expand A Monte-Carlo evaluation consists in estimating a position by averaging the outcome of several random continuations. The method… Expand Nodes in mobile ad hoc networks communicate with one another via packet radios on wireless multihop links. Because of node… Expand The science and technology of ultracapacitors are reviewed for a number of electrode materials, including carbon, mixed metal… Expand We present a system which enables a user to remove a file from both the file system and all the backup tapes on which the file is… Expand Such fault tolerant services are generally structured in one of two ways One approach is to replicate the service state at all… Expand Computer science is the study of the phenomena surrounding computers. The founders of this society understood this very well when… Expand