We describe a digital object and respository architecture for storing and disseminating digital library content. The key features of the architecture are: (1) support for heterogeneous data types; (2) accommodation of new types as they emerge; (3) aggregation of mixed, possibly distributed, data into complex objects; (4) the ability to specify multiple content disseminations of these objects; a...

We present a new architecture of layered space-time codes as a combination of BLAST architecture and of special STTC codes which are variations about the codes first introduced by Jafarkhani et al. and named Super Orthogonal Space-Time Trellis Codes (SOSTTC). Using powerful set partitioning, these codes are able to combine the coding advantage of STTC’s together with the advantage diversity of ...

For location based GIS(Geographic Information Systems) services, to provide spatial data and spatial data processing functions to various users including personal users and other ASPs(Application Service Providers), a standard interface is necessitated. As location based GIS services can be provided through a layered architecture, separate interfaces are needed for each layer. The focus of this...

This paper presents a new approach for the fault-tolerance in layered distributed systems. We develop the dynamic regeneration method in which faulty software compone nts are dynamically regenerated. In contrast to other techniques which duplicated critical components, this method does not increase the complexity of the system and tolerates an unlimited numbe r of failures. To apply this techni...

We propose a flexible Multi-layered Virtual Machine (MVM) design intended to improve efficiencies in grid computing and to overcome known problems that exist in grid systems. We present a novel approach to building virtual laboratories by adapting MVMs within distributed and grid systems, thereby providing enhanced flexibility and reconfigurability. The MVM is a service-oriented grid architectu...

There is an increase in the demand for data mining applications on the web. With the increase in the size of data sets there is also a demand for scalable generic solutions. Scalability and generic data mining models can be provided with the use of distributed computing. In this paper we propose the use of a multilayered framework for a distributed data mining system. A multi-layered architectu...

Conventional development of telemedicine systems usually leads to a medical information driven paradigm that tends to fail in capturing suitable abstraction when developing conference-oriented telemedicine systems for assisting the proceeding of telemedicine practices. By reviewing publicly available telemedicine systems through commonality and variability analysis, we have identified common de...

The design of believable emotional characters is the goal of the architecture described in this paper. The novelty of our approach relies on the distribution of the synthetic characters’ architecture in two complementary world models: semantic and physical. The characters emotional state is considered in the semantic world model, implemented as stand-alone Artificial Intelligence module, where ...

In discussions regarding models of cognition, the very mention of “computationalism” often incites reactions against the insufficiency of the Turing machine model, its abstractness, determinism, the lack of naturalist foundations, triviality and the absence of clarity. None of those objections, however, concerns models based on natural computation or computing nature, where the model of computa...

This paper envisions a plug-and-play architecture for test and evaluation that will allow engineers to rapidly and robustly define and configure test environments and scenarios. The architecture described here is based on a layered functional decomposition of the three aspects of test: information flow, control flow and behavior. These individual layered decompositions are presented first, then...