Search results for "Distributed"

showing 10 items of 1260 documents

Emergence of hierarchical networks and polysynchronous behaviour in simple adaptive systems

2011

We describe the dynamics of a simple adaptive network. The network architecture evolves to a number of disconnected components on which the dynamics is characterized by the possibility of differently synchronized nodes within the same network (polysynchronous states). These systems may have implications for the evolutionary emergence of polysynchrony and hierarchical networks in physical or biological systems modeled by adaptive networks.

Network architectureSimple (abstract algebra)Computer scienceDistributed computingAdaptive systemFOS: Physical sciencesGeneral Physics and AstronomyAdaptation and Self-Organizing Systems (nlin.AO)Nonlinear Sciences - Adaptation and Self-Organizing SystemsEPL (Europhysics Letters)
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A Logical Framework for Augmented Simulations of Wireless Sensor Networks

2006

This paper describes a framework for practical and efficient monitoring of a wireless sensor network. The architecture proposed exploits the dynamic reasoning capabilities of the situation calculus in order to assess the sensor network behavior before actually deploying all the nodes. Designing a wireless sensor network for a specific application typically involves a preliminary phase of simulations that rely on specialized software, whose behavior does not necessarily reproduce what will be experienced by an actual network. On the other hand, delaying the test phase until deployment may not be advisable due to unreasonable costs. This paper suggests the adoption of a hybrid approach that i…

Network architectureWi-Fi arrayVisual sensor networkbusiness.industryService setWireless networkComputer scienceWireless ad hoc networkDistributed computingWSNSensor webNetwork simulationIntelligent computer networkKey distribution in wireless sensor networksWireless site surveyMobile wireless sensor networkbusinessWireless sensor networkNetwork management stationHeterogeneous networkComputer network
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Distributed intelligent management,of active networks

2003

This paper focuses on improving computer network management by the adoption of artificial intelligence techniques. A logical inference system has being devised to enable automated isolation, diagnosis, and even repair of network problems, thus enhancing the reliability, performance, and security of networks. We propose a distributed multi-agent architecture for network management, where a logical reasoner acts as an external managing entity capable of directing, coordinating, and stimulating actions in an active management architecture. The active networks technology represents the lower level layer which makes possible the deployment of code which implement teleo-reactive agents, distribut…

Network architecturebusiness.industryComputer scienceDistributed computingSemantic reasonercomputer.software_genreNetwork simulationNetwork management applicationNetwork managementIntelligent agentIntelligent computer networkSoftware deploymentElement management systemArtificial intelligencebusinesscomputerActive Networks Network ManagementNetwork management stationActive Network ManagementActive networkingNetwork model
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FUZZY TCP: A PRELIMINARY STUDY

2002

Implementing efficient TCP for the Internet necessarily has to cope with the problem that the source does not know in advance which window allocation policy should be the best to use for a given network condition. In this paper, an on-line adaptive fuzzy system is used at the source in an objective to find the best possible weighted combination among the available policies.

Network congestionMathematical optimizationEngineeringTCP accelerationbusiness.industryDistributed computingHSTCPZeta-TCPTCP tuningTCP delayed acknowledgmentbusinessCommunications protocolFuzzy logicIFAC Proceedings Volumes
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Efficient Queuing Schemes for HoL-Blocking Reduction in Dragonfly Topologies with Minimal-Path Routing

2015

HPC systems are growing in number of connected endnodes, making the network a main issue in their design. In order to interconnect large systems, dragonfly topologies have become very popular in the latest years as they achieve high scalability by exploiting high-radix switches. However, dragonfly high performance may drop severely due to the Head-of-Line (HoL) blocking effect derived from congestion situations. Many techniques have been proposed for dealing with this harmful effect, the most effective ones being those especially designed for a specific topology and a specific routing algorithm. In this paper we present a queuing scheme called Hierarchical Two-Levels Queuing, designed speci…

Network congestionQueueing theoryInterconnectionbusiness.industryComputer scienceDistributed computingScalabilityHOLNetwork performancebusinessNetwork topologyComputer network2015 IEEE International Conference on Cluster Computing
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Transport Protocols for Remote Programming of Network Robots within the context of Telelaboratories for Education: A Comparative Analysis

2007

Within the context of tele-laboratories for education the use of the Internet as communication media permits any researcher/student to perform remote experiments in a simple and reliable manner. Moreover, this situation introduces many interesting issues like network protocols for Internet robots, the effects of variable bandwidth and time-delays on telerobotics, etc. In this paper we present a comparative analysis of using several Internet transport protocols when performing a remote experiment within the UJI Industrial Telelaboratory. TCP, UDP, Trinomial and TEAR protocols are analyzed using the NS2 simulator. Conclusions show a set of characteristics the authors of this paper consider ve…

Network congestionSIMPLE (military communications protocol)business.industryComputer scienceInternet layerDistributed computingComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSThe InternetContext (language use)businessCommunications protocolProtocol (object-oriented programming)Computer network2007 16th International Conference on Computer Communications and Networks
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Efficient Steering Mechanism for Mobile Network-Enabled UAVs

2022

HTTP Adaptive Streaming (HAS) is becoming the de-facto video delivery technology over best-effort networks nowadays, thanks to the myriad advantages it brings. However, many studies have shown that HAS suffers from many Quality of Experience (QoE)-related issues in the presence of competing players. This is mainly caused by the selfishness of the players resulting from the decentralized intelligence given to the player. Another limitation is the bottleneck link that could happen at any time during the streaming session and anywhere in the network. These issues may result in wobbling bandwidth perception by the players and could lead to missing the deadline for chunk downloads, which result …

Networking and Internet Architecture (cs.NI)FOS: Computer and information sciencesOptimization problembusiness.industryComputer scienceDistributed computingComputerApplications_COMPUTERSINOTHERSYSTEMS020302 automobile design & engineering020206 networking & telecommunications02 engineering and technologyComputer Science - Networking and Internet ArchitectureMechanism (engineering)0203 mechanical engineeringModels of communication0202 electrical engineering electronic engineering information engineeringCellular networkWirelessConnection steeringQuality of experienceUnmanned Aerial Vehicles (UAVs)Mobile NetworksbusinessGame theory2019 IEEE Global Communications Conference (GLOBECOM)
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"Table 1" of "Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC"

2012

(1) Number of generated MC events for the scalar top signal grid (2) Relative Cross section uncertainties for the scalar top signal grid.

Nonlinear Sciences::Chaotic DynamicsInclusiveNonlinear Sciences::Exactly Solvable and Integrable SystemsProton-Proton ScatteringPhysics::Atomic and Molecular ClustersTop7000.0Jet ProductionNP P --> 2LEPTON JETS XComputer Science::Distributed Parallel and Cluster ComputingComputer Science::Computers and Society
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Numerical methods for nonlinear inverse problems

1996

AbstractInverse problems of distributed parameter systems with applications to optimal control and identification are considered. Numerical methods and their numerical analysis for solving this kind of inverse problems are presented, main emphasis being on the estimates of the rate of convergence for various schemes. Finally, based on the given error estimates, a two-grid method and related algorithms are introduced, which can be used to solve nonlinear inverse problems effectively.

Nonlinear inverse problemInverse problemsMathematical optimizationFinite element methodNumerical analysisApplied MathematicsInverse problemOptimal controlFinite element methodTwo-grid methodIdentification (information)Computational MathematicsRate of convergenceDistributed parameter systemError estimatesMathematicsJournal of Computational and Applied Mathematics
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Notice of Violation of IEEE Publication Principles<BR>An adaptive routing mechanism for P2P resource discovery

2005

The key to the usability of large-scale decentralize peer-to-peer (P2P) systems, and one of the most challenge design aspects, is efficient mechanism for distributed resource discovery. Unstructured P2P networks are very attractive because they do not suffer the limitations of centralized systems an the drawbacks of highly structured approaches. However the search algorithms are usually based on simple flooding scheme generating large loads on the network participants. In this paper to address this major limitation, we present the design an evaluation of an innovative searching protocol in unstructured P2P networks. The approach aims at dynamically adapting the network topology to peers' in…

NoticeExploitbusiness.industryComputer scienceDistributed computingUsabilityNetwork topologycomputer.software_genreFlooding (computer networking)Grid computingSearch algorithmbusinessSelection algorithmcomputerComputer networkCCGrid 2005. IEEE International Symposium on Cluster Computing and the Grid, 2005.
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