We present a cryptographic module that can be used both as a cryptographic hash function and as a stream cipher. High performance is achieved through a combination of low work-factor and a high degree of parallelism. Throughputs of 5.1 bits/cycle for the hashing mode and 4.7 bits/cycle for the stream cipher mode are demonstrated on a commercially available VLIW micro-processor.

Scalable execution of continuous queries over massive data streams often requires splitting input streams into parallel sub-streams over which query operators are executed in parallel. Automatic stream splitting is in general very difficult, as the optimal parallelization may depend on application semantics. To enable application specific stream splitting, we introduce splitstream functions whe...

We consider online and space-bounded computations in the data stream processing model where a stream is a sequence of records of the form (i, 1) signifying insertion of item i, or, (i,−1), signifying deletion of item i, where, i ∈ {1, 2, . . . , n}. This model finds applications in network monitoring, approximate query answering in databases, computational geometry, where, items signify points ...

We introduce a new discretization for the stream function formulation of incompressible Stokes equations in two and three space dimensions. The method is strongly related to Hellan--Herrman...

Diel fluctuations can comprise a significant portion of summer discharge in small to medium catchments. The source of these signals and the manner in which they are propagated to stream gauging sites is poorly understood. In this work, we analysed stream discharge from 15 subcatchments in Dry Creek, Idaho, Reynolds Creek, Idaho, and HJ Andrews, Oregon. We identified diel signals in summer low f...

In this paper we consider a queueing system with two arrival streams with application to mobile cellular communications systems is considered in this paper. Stream 1 is considered to require a higher priority to access the server than stream 2. On the other hand, while stream 2 is handled following a delay model, stream 1 has stringent constraints with regard to the waiting time, and thus it is...

Abstract. Recent Hadley cell expansion rate estimates vary substantially, as a multitude of methods and reanalysis datasets yield conflicting results. Among the many estimating width, meridional-stream-function 500 hPa zero crossing is most widely used, it directly related to poleward edge (HC). Other common metrics use atmospheric phenomena associated with HC proxy, for instance zonal-surface-...

Speech stream segregation is presented as a new speech enhancement for automatic speech recognition. Two issues are addressed: speech stream segregation from a mixture of sounds, and interfacing speech stream segregation with automatic speech recognition. Speech stream segregation is modeled as a process of extracting harmonic fragments, grouping these extracted harmonic fragments, and substitu...