Katrina M. Hanna

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Choosing the best-performing server for a particular client from a group of replicated proxies is a difficult task. We offer a novel, two-step technique for server selection that chooses a small subset of five servers, and isolates testing to that subset for ten days. We present an empirical evaluation of both our method and previously proposed metrics(More)
We propose and evaluate a mobile, peer-to-peer Information Retrieval system. Such a system can, for example, support medical care in a disaster by allowing access to a large collections of medical literature. In our system, documents in a collection are replicated in an overlapping manner at mobile peers. This provides resilience in the face of node(More)
  • K M Hanna
  • 1993
An experimental study was conducted to test the effect of a nurse-client transactional intervention (King, 1981) on 51 female adolescents' oral contraceptive adherence. Subjects were randomly assigned to a control or an experimental group. Both groups experienced the clinics' contraceptive teaching. Subjects in the experimental group experienced the(More)
— We show how dividing a database and replicating documents and indicies in an overlapping manner provides resilience in the face of node failures, malicious attacks, censorship attempts, and network partitions. This property of fault tolerance is beneficial for a wide range of scenarios, and we examine it in the context of two applications: an IR(More)
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