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Tesis sobre el tema "Multi-field approach"

Autor: Grafiati
Publicado: 25 de mayo de 2024
Última modificación: 7 de julio de 2024

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1

Sustar, Tomaz. "A solution approach to non-linear multi-field problems." Thesis, Swansea University, 2002. https://cronfa.swan.ac.uk/Record/cronfa42573.

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In this work a solution approach for non-linear multi-filed problems is presented. The approach is based on co-operative usage of several advanced techniques inside a single environment instead of combining several different systems. The objective of this work is to demonstrate the applicability of advanced computational techniques to complex numerical problems and to present advantages of a co-operative solution environment in the development of finite elements. The solution environment, implemented in Mathematica, consists of a symbolic code generator - AceGen, a package of prearranged modul
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2

Dai, Zhenwen, and 戴振文. "A Markov random field approach for multi-view normal integration." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B4308588X.

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3

Dai, Zhenwen. "A Markov random field approach for multi-view normal integration." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B4308588X.

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4

Davis, Matthew Harris. "A Bond Valence-Based Force Field: A Multi-Body Approach." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3796.

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The typical form for a molecular mechanics force field consists of a foundation of pair-wise terms to describe bonded and non-bonded atomic interactions, with multi-body correction terms to deal with the limitations of pair-wise terms. I present here the first attempts of a molecular mechanics model that is founded on multi-body terms, which are based on the Bond Valence Model (Brown, 2002) and recent developments in the Vectorial Bond Valence Model (Bickmore et al., 2013a; Harvey et al., 2006). I calibrated these models on pressure vs. energy curves for a set of SiO2 polymorphs. The average d
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5

Hagelbäck, Johan. "A Multi-Agent Potential Field based approach for Real-Time Strategy Game bots." Licentiate thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00428.

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Computer games in general and Real-Time Strategy (RTS) games in particular provide a rich challenge for both human- and computer controlled players, often denoted as bots. The player or bot controls a large number of units that have to navigate in partially unknown dynamic worlds to pursue a goal. Navigation in such worlds can be complex and require much computational resources. Typically it is solved by using some sort of path planning algorithm, and a lot of research has been conducted to improve the performance of such algorithms in dynamic worlds. The main goal of this thesis is to investi
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6

Asseburg, Christian. "A Bayesian approach to modelling field data on multi-species predator prey-interactions." Thesis, St Andrews, 2006. https://research-repository.st-andrews.ac.uk/handle/10023/174.

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7

Hagelbäck, Johan. "A multi-agent potential field based approach for real-time strategy game bots /." Karlskrona : Department of Systems and Software Engineering, School of Engineering, Blekinge Institute of Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00428.

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8

RAMASWAMY, EASWAR SINGANELLORE. "AN APPROACH TOWARDS HDL MODEL GENERATION FOR THE MULTI-TECHNOLOGY FIELD PROGRAMMABLE GATE ARRAY." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1139339547.

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9

Engels, Philipp Simon [Verfasser], Alexander [Gutachter] Hartmaier, and Ingo [Gutachter] Steinbach. "A multi-phase-field simulation approach incorporating finite, elasto-plastic deformations / Philipp Simon Engels. Gutachter: Alexander Hartmaier ; Ingo Steinbach." Bochum : Ruhr-Universität Bochum, 2016. http://d-nb.info/1102525499/34.

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10

Uusitalo, Tim. "A first approach in applying Artificial Potential Fields in Car Games." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2480.

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In car racing simulation games, finishing first is the main goal. To reach that goal, it is required to go around a racing track, competing against other cars aiming for the same goal. Implementing a bot for doing so may have its difficulties, although using a technique called multi-agent systems combined with artificial potential field, let- ting the agents take care of subtasks like keeping the car on the track, minimize how much the car turns in a curvature and basics in navigation around the track, has showed that artificial potential fields very well fit the problem of driving a car in si
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11

De, Nicola Antonio. "Development of molecular models of interfaces using a multi-scale hybrid particle-field approach: application to composite materials and biomembranes." Doctoral thesis, Universita degli studi di Salerno, 2014. http://hdl.handle.net/10556/1444.

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2012-2013<br>The rule of the interface in systems including polymer composites and block-­‐ copolymer interacting with biomembrane has been investigated by computational approach. In particular, for the polymer composite investigation, a system composed of PMMA embedding a silica nanoparticle of 3 nm (diameter), and an analogue system made of MMA and silica nanoparticle have been simulated. The structuration of both, PMMA and MMA close to the surface of the nanoparticle have been evaluated and calculated. As main resul
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12

Keller, Michel. "Development of a multi-scale approach using chemical kinetics and reactive force field molecular dynamics to model soot formation and oxidation." Thesis, Institut polytechnique de Paris, 2019. http://www.theses.fr/2019IPPAE005.

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La présente étude décrit la mise au point d'une approche multi-échelles pour la modélisation des processus pendant la formation et l'oxydation précoce de la suie. Pour ce faire, des calculs cinétiques détaillés et macroscopiques en phase gazeuse sont utilisés, à l'aide de Chemkin, pour modéliser la combustion dans un réacteur fermé hétérogène dans des conditions diverses. Afin d'étudier l'impact de la température, du mélange de carburant et du rapport d'équivalence, une gamme de ces trois paramètres a été analysée. A partir des résultats des calculs de cinétique de réaction, des molécules pert
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13

Danisman, Betul. "Spinodal Instabilities In Symmetric Nuclear Matter Within A Density-dependent Relativistic Mean-field Approach." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613473/index.pdf.

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The nuclear matter liquid-gas phase transition is expected to be a signal of nuclear spinodal instabilities as a result of density fluctuations. Nuclear spinodal instabilities in symmetric nuclear matter are studied within a stochastic relativistic density-dependent model in semi-classical approximation. We use two parameterization for the Lagrange density, DDME1 and TW sets. The early growth of density fluctuations is investigated by employing relativistic Vlasov equation based on QHD and discussed the cluster size of the condensations from the early growth of density correlation functions. E
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14

Freitas, Halley H. Eisner. "Leveling the Playing Field: a Multi-method Approach to Examine the Student Achievement Gap among High Poverty Middle Schools in Southern Arizona." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228133.

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This dissertation contributes to the educational literature by providing new research on the achievement gap in the Southwest. For this study, a sequential mixed-methods approach was employed. The quantitative research assessed which factors influenced academic achievement among a 2012 high school graduating class (N=2,238) through analyses using correlation, ANOVA and HLM. Additionally, qualitative themes from 15 in-depth ethnographic teacher interviews and 116 teacher surveys from low income schools were triangulated with the quantitative findings to describe the multiple, interconnected
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15

Bergkvist, Markus, and Tobias Olandersson. "Machine learning in simulated RoboCup." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik och datavetenskap, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3827.

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An implementation of the Electric Field Approach applied to the simulated RoboCup is presented, together with a demonstration of a learning system. Results are presented from the optimization of the Electric Field parameters in a limited situation, using the learning system. Learning techniques used in contemporary RoboCup research are also described including a brief presentation of their results.
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16

Er, Nuray. "Nuclear Spinodal Instabilities In Stochastic Mean-field Approaches." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610834/index.pdf.

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Nuclear spinodal instabilities are investigated in non-relativistic and relativistic stochastic mean-field approaches for charge asymmetric and charge symmetric nuclear matter. Quantum statistical effect on the growth of instabilities are calculated in non-relativistic approach. Due to quantal effects, in both symmetric and asymmetric matter, dominant unstable modes shift towards longer wavelengths and modes with wave numbers larger than the Fermi momentum are strongly suppressed. As a result of quantum statistical effects, in particular at lower temperatures, amplitude of density fluctuations
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17

Páez, Avilés Cristina. "Innovation on Nanoscience: Processes and Ecosystems of Innovation with a multi-KET approach to foster Technology Transfer and Commercialization of Nanotechnologies in the Field of Healthcare." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/401502.

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Transferring nanotechnology into marketable products and services is still considered a major challenge. In Europe, this issue has been identified as a weakness, not only for nanotechnology, but also for the other five Key Enabling Technologies (KETs), strategic for the economic growth of the region. In this regard, the current European Funding Programme Horizon 2020 is making great efforts with their action lines in order to prioritize the industrial implementation of KETs, and in this manner, address major economic and societal needs. This initiative is also fostering the cross-fertilization
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18

Bazin, Clément. "Numerical and experimental studies of two-phase flows interacting with a bundle of tubes." Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAX106.

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Les générateurs de vapeur (GV) des centrales nucléaires sont composés de faisceaux de tubes soumis à des écoulements diphasiques eau-vapeur. Les vibrations liées à cette interaction peuvent induire des dommages (fatigue et usure par frottement et chocs) pouvant entraîner de graves conséquences pour la sûreté nucléaire.Dans le cadre de la prévention des risques vibratoires des tubes de GV des études expérimentales sont réalisées à l'aide de faisceaux analytiques de tubes droits soumis à un écoulement transverse diphasique.En parallèle, il est également important de développer un outil de simula
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19

Smedslund, Katja. "Les violences conjugales à l'égard des femmes en Europe : analyse socio-politique contemporaine et perspectives d'action dans l'Union Européenne." Paris 3, 2008. http://www.theses.fr/2008PA030127.

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Suite à une prise de conscience internationale au travers notamment des conférences mondiales des Nations-Unies sur les femmes, marqué par le tournant de la Conférence de Pékin en 1995, la question des violences conjugales à l’égard de femmes dans l’Union européenne et de son éradication se pose comme un enjeu de société actuel et complexe. Cette prise de conscience européenne s’opère plus spécifiquement à partir la fin des années 90 et concerne l’ensemble des instances européennes notamment à travers les travaux de l’UE, du Conseil de l’Europe (l���ensemble des pays de l’UE étant membres du C
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20

Lv, Duchao. "A Multi-Scale Simulation Approach to Deformation Mechanism Prediction in Superalloys." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469009668.

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21

Ducroix, Alice. "Multi-scale dynamics of water inside boehmite : a NMR approach." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS575.pdf.

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Dans plusieurs domaines de la chimie, les catalyseurs occupent une place importante puisqu’ils assurent une réaction plus rapide, une meilleure sélectivité et réduisent l’utilisation de matières premières. L’industrie s’est récemment tournée vers les catalyseurs hétérogènes dont la récupération est plus facile. Ces catalyseurs sont constitués d’un support poreux et de sites actifs répartis en surface à travers la porosité du support. Pour optimiser pleinement le support, de récentes études ont abordé la question de l’accessibilité des molécules aux sites réactionnels. Cela passe notamment par
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22

Demange, Gilles. "Mise en oeuvre d'une approche multi-échelles fondée sur le champ de phase pour caractériser la microstructure des matériaux irradiés : application à l'alliage AgCu." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015ECAP0048/document.

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Anticiper l’évolution de la microstructure d’un matériau en condition d’usage est d’une importance cruciale pour l’industrie. Cette maîtrise du vieillissement nécessite une compréhension claire des mécanismes sous-jacents, qui agissent sur une large gamme d’échelles spatiales et temporelles. Dans cette optique, ce travail de thèse a choisi d’appliquer la méthode de champ de phase qui, en raison du saut d’échelle qu’elle réalise naturellement, est un outil intensivement employé dans le domaine des matériaux, pour prédire l’évolution en temps long de la microstructure. L’enjeu de l’étude a été d
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23

Le, Guillou Fanny. "Approche systémique de la haie, pour passer de sa multifonctionnalité à la conception de plans de gestion." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMC003.

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La haie bocagère, au travers des nombreuses fonctions qu’elle possède, intervient dans les problématiques engendrées par le changement climatique actuel. Cependant, l’évolution radicale du paysage agraire au cours du XXe siècle a conduit à un arasement massif des haies ces 60 dernières années. Bien que ses intérêts économiques, écologiques et socio-culturels soient avérés, ils ne sont pas reconnus par tous les acteurs et la dégradation du bocage se poursuit. Les conséquences de cette disparition font peu à peu prendre conscience de la nécessité de préserver les haies. Des initiatives apparaiss
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24

Demeyère, Caroline. "Gouvernance publique et collaboration gouvernements-associations dans l’action publique : approche ethnographique des dynamiques relationnelles dans le champ des politiques d’égalité entre les femmes et les hommes (1981-2020)." Thesis, Paris 10, 2020. http://www.theses.fr/2020PA100068.

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Cette thèse propose d’étudier la collaboration entre acteurs gouvernementaux et associations pour la conduite de l’action publique, conçue comme un processus de transformation des modalités relationnelles conduit par les pratiques des acteurs et leurs interactions. Un cadre théorique néo-institutionnaliste centré sur les concepts de Champ d’action stratégique, de travail institutionnel et d’interactions est mobilisé afin d’articuler le niveau micro des pratiques collaboratives, la collaboration émergeant à l’échelle inter-organisationnelle et le niveau macro de la gouvernance publique. La méth
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25

Völker, Benjamin [Verfasser]. "Phase-field modeling for ferroelectrics in a multi-scale approach / von Benjamin Völker." 2010. http://d-nb.info/1010373668/34.

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26

Adolph, Inga Winny. "Remote sensing large-scale surface structures in the Wadden Sea. Application of satellite SAR data (TerraSAR-X) to record spatial distribution and dynamics of habitats and geomorphic structures for monitoring and long-term ecological research." Doctoral thesis, 2021. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-202104064249.

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The Wadden Sea off the coast of the southern North Sea is the largest coherent area of tidal flats worldwide. As a highly productive ecosystem it is of global importance, e.g. as nursery for fish and as a feeding and resting area for 10 – 12 million migratory birds following the East Atlantic Flyway. The outstanding ecological significance of this region corresponds to a high level of protection by EU directives and national law and by inscription as UNESCO World Heritage Site, all of which requires regular monitoring and assessment. Apart from the ecological aspects, the Wadden Sea is also of
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