Search results for "Simulation."

showing 10 items of 4779 documents

SIMULATION OF NONUNIFORM SEDIMENT TRANSPORT AT DIFFERENT DISTANCES FROM THE OUTLET

2012

modellingsimulationsediment transportSettore ICAR/01 - Idraulica
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Effets de la distance et dépendance d’échelles dans les modèles géographiques de villes et de territoires

2020

International audience

modèles à base d'agents[SHS.GEO] Humanities and Social Sciences/Geographysimulation spatialelois d'échelle[SHS.GEO]Humanities and Social Sciences/GeographyfractalesInvariance d'échelleComputingMilieux_MISCELLANEOUS
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L’apport de la simulation multi-agent du trafic routier pour l’estimation des pollutions atmosphériques automobiles

2015

National audience; La pollution atmosphérique est aujourd’hui considérée comme cancérigène pour la santé humaine (OMS, 2013). Avec le bruit, elle est l’une des premières nuisances directement ressenties par les populations en milieu urbain. Son évaluation présente un véritable enjeu pour les pouvoirs publics afin de mieux en identifier ses sources, ses impacts en vue de définir des politiques territoriales (PDU, cadastre d’émission). A l’échelle locale, la pollution atmosphérique est à relier directement à l’intensité des sources d’émissions qui vont accentuer, ou non, la qualité de l’air extérieure (Elichegaray, 2010) . En milieu urbain, le premier contributeur en émission de NOx, CO, ou P…

modélisation des flux de transport routier[SHS.GEO] Humanities and Social Sciences/GeographyPollution atmosphérique de proximité[SHS.GEO]Humanities and Social Sciences/Geographysimulation multi-agentcomptage routier[ SHS.GEO ] Humanities and Social Sciences/Geography
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Case-specific performance of MM-PBSA, MM-GBSA, and SIE in virtual screening.

2015

In drug discovery the reliable prediction of binding free energies is of crucial importance. Methods that combine molecular mechanics force fields with continuum solvent models have become popular because of their high accuracy and relatively good computational efficiency. In this research we studied the performance of molecular mechanics generalized Born surface area (MM-GBSA), molecular mechanics Poisson-Boltzmann surface area (MM-PBSA), and solvated interaction energy (SIE) both in their virtual screening efficiency and their ability to predict experimentally determined binding affinities for five different protein targets. The protein-ligand complexes were derived with two different app…

molecular mechanics generalized Born surface areaPhosphodiesterase InhibitorsMolecular Dynamics Simulationta3111Molecular mechanicsMolecular Docking Simulationbeta-LactamasesMolecular dynamicssolvated interaction energyBacterial ProteinsComputational chemistryAldehyde ReductaseDrug DiscoveryMaterials ChemistryHumansHSP90 Heat-Shock ProteinsPhysical and Theoretical ChemistryBeta-Lactamase InhibitorsSpectroscopymolecular mechanics Poisson-Boltzmann surface areaMM-GBSAVirtual screeningBinding SitesChemistryPhosphoric Diester Hydrolasesta1182Hydrogen BondingInteraction energyvirtual screeningComputer Graphics and Computer-Aided DesignMolecular Docking SimulationMM-PBSAModels ChemicalROC CurveSolvent modelsDocking (molecular)Area Under CurveBiological systemReceptors Progesteronebeta-Lactamase InhibitorsHydrophobic and Hydrophilic InteractionsProtein BindingJournal of molecular graphicsmodelling
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Enhancing the performance of HSDPA communication with multipoint transmission techniques

2015

The evolution of mobile phones, tablets and other mobile communication devices has led to a significant increase in the amount of data delivered over mobile networks. In order to satisfy the climbing data rate demands of customers, existing mobile broadband networks are being expanded with new features that allow ubiquitous and consistent networking experience. This research presents three multipoint transmission techniques for Wideband Code Division Multiple Access (WCDMA) based High-Speed Downlink Packet Access (HSDPA) communication protocol. Multiflow, High-Speed Single-Frequency Network (HS-SFN) and Multipoint-to-Point Single-Frequency Network (M2P-SFN) enable transmission of user-dedicat…

monipistelähetysComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSHSDPAmultipoint transmissionmatkaviestinverkottukiasematsimulationtiedonsiirtoprotokollatM2P-SFNlangaton tiedonsiirtoHS-DDTxlaajakaistaverkot3G-tekniikkaWCDMAmultiflow3Gsimulointischedulinglangattomat verkotsingle-frequency network
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Performance Enhancement of a Small Animal Positron Emission Tomograph based on Continuous Crystals and Silicon Photomultipliers

2017

La tomografía por emisión de positrones (PET, por sus siglas en inglés) es una técnica de Medicina Nuclear que permite obtener de manera no invasiva imágenes funcionales “in vivo” marcando un compuesto orgánico con un emisor de positrones. Los tomógrafos PET requieren un alta resolución espacial y sensibilidad para estimar con precisión la distribución del radiotrazador en el animal. Frente a los bloques pixelados comúnmente utilizados en PET, los detectores que consisten en la combinación de cristales continuos acoplados a fotodetectores segmentados pueden ofrecer una mayor eficiencia y una alta resolución espacial. Esta última depende de la precisión de los algoritmos de determinación de …

monte carlo simulationspositron emission tomography:FÍSICA [UNESCO]UNESCO::FÍSICAdepth of interactionmonolithic crystalssilicon photomultipliers
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Représentation, analyse et caractérisation de surfaces rugueuses

2020

Nous présentons un projet de recherche dans lequel, nous proposons d’aborder la problématique de la représentation numérique, de l’analyse et de la caractérisation de surfaces rugueuses. La rugosité est un concept complexe, par nature multi-échelle et reposant sur l’étude du comportement local d’une surface dans un voisinage donné. Son évaluation sur les surfaces est essentielle pour de nombreux problèmes expérimentaux. Cela explique les nombreuses études réalisées dans les domaines applicatifs liés à la physique et la mécanique, là où le contrôle et la maîtrise de l’état des surfaces constituent un besoin majeur pour les industriels. Un grand nombre de paramètres conventionnels normalisés …

multi-échellepropriétés physiquesrugosité[INFO.INFO-MO] Computer Science [cs]/Modeling and Simulationcaractérisation géométrique
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Conditional predictive inference for online surveillance of spatial disease incidence

2011

This paper deals with the development of statistical methodology for timely detection of incident disease clusters in space and time. The increasing availability of data on both the time and the location of events enables the construction of multivariate surveillance techniques, which may enhance the ability to detect localized clusters of disease relative to the surveillance of the overall count of disease cases across the entire study region. We introduce the surveillance conditional predictive ordinate as a general Bayesian model-based surveillance technique that allows us to detect small areas of increased disease incidence when spatial data are available. To address the problem of mult…

multiple comparisonsGeorgiaIncidenceSouth Carolinalagged loss functionBayes TheoremBayesian hierarchical modelspublic health surveillanceArticleconditional predictive ordinatePopulation Surveillancespatial dataSalmonella InfectionsCluster AnalysisHumansComputer SimulationPoisson Distribution
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Highly-parallelized simulation of a pixelated LArTPC on a GPU

2023

The rapid development of general-purpose computing on graphics processing units (GPGPU) is allowing the implementation of highly-parallelized Monte Carlo simulation chains for particle physics experiments. This technique is particularly suitable for the simulation of a pixelated charge readout for time projection chambers, given the large number of channels that this technology employs. Here we present the first implementation of a full microphysical simulator of a liquid argon time projection chamber (LArTPC) equipped with light readout and pixelated charge readout, developed for the DUNE Near Detector. The software is implemented with an end-to-end set of GPU-optimized algorithms. The alg…

multiplication and inductionpulse formationscintillationtutkimuslaitteethiukkasfysiikkaelectric fieldsnoble liquid detectorscharge transportdetector modelling and simulations IIsimulation methods and programsMonte Carlo -menetelmätilmaisimetelectron emissiondouble-phaseprosessointiionizationalgoritmittime projection chamberssimulointiTPC
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Multipoint transmission scheme for HSDPA

2013

multipoint transmissionHSDPAsystem performancelangaton tekniikkamatkaviestinverkotphase adjustmentprotokollatlangaton tiedonsiirtotype3 receiver3G-tekniikkamultiflowHS-SFNsimulointisimulationslangattomat verkot
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