This thesis studies system-level issues arising from implementing Digital Signal Processing (DSP) applications on highly heterogeneous and dynamic networks of processors. Compared with traditional DSP computation platforms such as microprocessor chips, distributed networks of processors offer many potential advantages such as resource sharing and fault tolerance. To realize these benefits, howe...

For a large-scale distributed query engine, which supports long running queries over federated data sources, it is hard to obtain statistics of data sources, servers and other resources. In addition, the characteristics of data sources and servers are changing at runtime. A traditional distributed query optimizer or centralized adaptive techniques is inadequate in this situation. In this paper,...

Many stream-based applications are naturally distributed. Applications are often embedded in an environment with numerous connected computing devices with heterogeneous capabilities. As data travels from its point of origin (e.g., sensors) downstream to applications, it passes through many computing devices, each of which is a potential target of computation. Furthermore, to cope with time-vary...

Harmonic grammar (Legendre, et al., 1990) is a connectionist theory of linguistic well-formed ness based on the assumption that the well-formedness of a sentence can be measured by the harmony (negative energy) of the corresponding connectionist state. Assuming a lower-level connectionist network that obeys a few general connectionist principles but is otherwise unspecified, we construct a high...

What makes people smarter than machines? They certainly are not quicker or more precise. Yet people are far better at perceiving objects in natural scenes and noting their relations , at understanding language and retrieving contextually appropriate information from memory, at making plans and carrying out contextually appropriate actions , and at a wide range of other natural cognitive .tasks....

We propose a web-based system to remotely and distributedly process triangle meshes. Users can implement complex geometric procedures by composing simpler processing tools that, in their turn, can be provided by researchers who publish them as appropriate Web services. We defined an efficient geometric data transfer protocol in order to resolve the potential mesh delivery bottleneck caused by t...

With distributed computing beginning to play a major role in modern Computer Science, the theory of grammar systems and distributed automata has been developed in order to model distributed computing. In this paper, we introduce the notion of distributed automata in the sequential sense. Distributed Automata are a group of automata working in unison to accept one language. We build the theory o...

The paper presents possibilities of distributed computing using the MATLAB distributed computing toolbox (DCT) and its application for multi-channel signal processing. The goal of the contribution is in description of parallel task processing through the computer network using cluster of computers and its use for electroencephalogram (EEG) signal analysis. The contribution presents the whole pr...

Holoparadigm (Holo ) is a multiparadigm model oriented to development of paraUel and distributed programs. In this paper we proposc the Distributed Holo (DHolo ), a model to support the distributed execution of programs developed in Holo. DHolo is based on object mobility and blackboards. This distributed model can be fully implcmented on Java platform. Specifically, mobility is implemcnted usi...