— Channel models for urban deployments are among the most commonly used in research, standardization, and dimensioning of cellular networks. The time dispersion has ever been an ...
This paper denes and describes the properties of a multicast virtual topology, the M-array, and a resource-ecient variation, the REM-array. It is shown how several collective op...
In this work we revisit and formally study the notion of proxy cryptography. Intuitively, various proxy functions allow two cooperating parties F (the “FBI”) and P (the “pro...
In this paper we discuss issues related to the highperformance implementation of collective communications operations on distributed-memory computer architectures. Using a combina...
E. W. Chan, M. F. Heimlich, Avi Purkayastha, Rober...
On large distributed memory parallel computers the global communication cost of inner products seriously limits the performance of Krylov subspace methods 3]. We consider improved ...