The proceedings contain 36 papers. The topics discussed include: spatial awareness of digital artefacts;an extensible collision avoidance model for realistic self-driven autonomous agents;collision detection and force...
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ISBN:
(纸本)0769530117
The proceedings contain 36 papers. The topics discussed include: spatial awareness of digital artefacts;an extensible collision avoidance model for realistic self-driven autonomous agents;collision detection and force response in highly detailed point-based hapto-visual virtual environments;performance enhancement in MMOGs using entity types;a visibility-driven approach to managing interest in distributed simulations with dynamic load balancing;real-time task scheduling extended overloading technique for multiprocessor systems;federate migration in a service oriented HLA RTI;distributed virtual reality in education;a grammar-based Web service enabling multi-domain distributed interoperation of command/control and simulation systems;a lightweight heuristic-based mechanism for collecting committed consistent global states in optimistic simulation;and efficient analysis of simultaneous events in distributed simulation.
A distributed constraint optimization problem (DCOP) distributes the variables and constraints among intelligent agents to enable it to be treated as a constraint satisfaction problem. In this paper, we propose a sear...
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ISBN:
(纸本)9780889866560
A distributed constraint optimization problem (DCOP) distributes the variables and constraints among intelligent agents to enable it to be treated as a constraint satisfaction problem. In this paper, we propose a search method based on the asynchronous distributed optimization (Adopt) algorithm that has been proposed for DCOP. Adopt is a complete method based on a depth-first-search, and operates asynchronously to find the optimal solution for the overall cost. We propose a distributed search method that builds on the merits of Adopt by considering the local load of each agent as opposed to overall optimization. The effect of the proposal was evaluated in simulations.
In this paper, an almost peer-to-peer (AP2P) clock synchronization protocol is proposed. AP2P is almost peer-to-peer in the sense that it provides the desirable features of a purely hierarchical (client/server) clock ...
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In this paper, we propose the design of VoroNet, an object-based peer to peer overlay network relying on Voronoi tessellations, along with its theoretical analysis and experimental evaluation. VoroNet differs from pre...
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This paper introduces the usage of MATLAB distributed Computing Engine(MDCE). The relationship between the volume of the data transmitted and the transmission time is tested and the analysis of the data shows that the...
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A comparative study of parallel metaheuristics executed in grid environments is proposed, having as case study a genetic algorithm, a simulated annealing algorithm and a random search method. The random search method ...
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The purpose of content-based image retrieval (CBIR) is to retrieve, from real data stored in a database, information that is relevant to a query In remote sensing applications, the wealth of spectral information provi...
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ISBN:
(纸本)9780769530789
The purpose of content-based image retrieval (CBIR) is to retrieve, from real data stored in a database, information that is relevant to a query In remote sensing applications, the wealth of spectral information provided by last-generation (hyperspectral) instruments has quickly introduced the need for parallel CBIR systems able to effectively retrieve features of interest from ever-growing data archives. To address this need, this paper develops a new parallel CBIR system which has been specifically designed to be run on heterogeneous networks of computers (HNOCs). These platforms have soon become a standard computing architecture in remote sensing missions due to the distributed nature of data repositories. The proposed heterogeneous system first extracts an image feature vector able to characterize image content with sub-pixel precision, and then uses the obtained feature as a search reference. The system is validated using a complex hyperspectral image database, and implemented on several networks of workstations at University of Maryland.
Most research on distributed space time block coding (STBC) has so far focused on the case of 2 relay nodes and assumed that the relay nodes are perfectly synchronised at the symbol level. By applying STBC to 3-or 4-r...
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ISBN:
(纸本)9781424411436
Most research on distributed space time block coding (STBC) has so far focused on the case of 2 relay nodes and assumed that the relay nodes are perfectly synchronised at the symbol level. By applying STBC to 3-or 4-relay node systems, this paper shows that imperfect synchronisation causes significant performance degradation to the conventional detector. To this end, we propose a new STBC detection solution based on the principle of parallel interference cancellation (PIC). The PIC detector is moderate in computational complexity but is very effective in suppressing the impact of imperfect synchronisation.
Network processors today consists of multiple parallel processors (microengines) with support for multiple threads to exploit packet level parallelism inherent in network workloads. With such concurrency, packet order...
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