作者：
De Brito, Halisson MatosStrauch, JuliaDe Souza, Jano MoreiraOsthoff, CarlaCOPPE/UFRJ
Systems Engineering and Computer Science Program Federal University of Rio de Janeiro PO Box 68511 ZIP Code: 21945-970 Rio de Janeiro RJ Brazil ENCE /IBGE
National School of Statistical Sciences 106 S. 401 ZIP Code: 20231-050 R. André Cavalcanti Rio de Janeiro RJ Brazil LNCC
National Laboratory for Scientific Computing Av. Getulio 333 Quitandinha Vargas Petrópolis RJ Brazil IM/UFRJ
Institute of Mathematics Federal University of Rio de Janeiro PO Box 68511 ZIP Code: 21945-970 Rio de Janeiro RJ Brazil
This paper presents MODENA, an architecture for scientific models management using Computational Grid platform. This architecture is comprised of two systems: ModManager and ModRunner. ModManager deals with knowledge ...
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This paper presents MODENA, an architecture for scientific models management using Computational Grid platform. This architecture is comprised of two systems: ModManager and ModRunner. ModManager deals with knowledge management about scientific models, acting as a scientific models library allowing for cataloguing, searching, reutilization and generation of new models. To achieve this, a metamodel is proposed to classify models, in order to support the organization, searching and retrieving of models. ModRunner manages the execution of models in a Grid environment allowing for model composition to generate a scientific Grid Workflow to be executed by distributed services offered by Grid Services. An initial prototype of ModManager is presented.
作者：
Vivacqua, Ade Souza, JComputer Science Program
Graduate School Engineering Federal University of Rio de Janeiro Rio de Janeiro Brazil DCC
Institute of Mathematics Federal University of Rio de Janeiro Rio de Janeiro Brazil
Creativity has become an important asset in today's fast changing environment. It is especially important in design, which demands innovative solutions for every project. We believe that creativity can and should ...
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ISBN:
(纸本)0780379411
Creativity has become an important asset in today's fast changing environment. It is especially important in design, which demands innovative solutions for every project. We believe that creativity can and should be encouraged in work groups. In this paper, we propose a framework for supporting creativity in problem solving. Through the use of problem, domain and user models and information retrieval and agent technology, we hope to support creative cooperative work.
Bluetooth is an emerging technology for personal wireless communications and is being applied in many scenarios. In this paper we investigate the data scheduling policy for Bluetooth piconets. In general the performan...
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Virtual endoscopy (VE) mimics the examination consisting of introducing an endoscope into a tubular structure for diagnostic purposes. One of the main problems in VE is the computattion of the navigation path that the...
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With the fast growth of electronic commerce, there is increased demand and greater potential for online negotiation services. Negotiation is the means through which participants arrive at a specific agreement under co...
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In this paper, we start from a case study of an architecture company and move on to a framework of agents to identify and inform conceptual design. The processes and problems exhibited by the company involved are quit...
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Processing spatial joins efficiently is crucial to rendering the spatial data analysis process feasible. As pointed out in many works, the exact intersection test of two spatial objects is the most time-consuming and ...
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Bluetooth is a promising wireless technology designed for short-range ad hoc networks. This paper addresses issues related to Bluetooth performance in Nakagami-m fading channels. This distribution can model different ...
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Bluetooth is a promising wireless technology designed for short-range ad hoc networks. This paper addresses issues related to Bluetooth performance in Nakagami-m fading channels. This distribution can model different fading intensities through parameter m. We evaluate the throughput and the packet loss rate of Bluetooth links using asynchronous packets. Relations between packet error rate and node distances are then derived, and a new piconet scheduling algorithm based on the estimated channel state information is then proposed. This polling scheme detects fading conditions and avoids transmission in bad channel conditions. The best strategy is defined using the received signal-to-noise ratio and the Nakagami fading parameter m. Simulation results demonstrate the algorithm performance for different traffic conditions.
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