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Dissertations / Theses on the topic 'Expansion phase'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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1

Harmon, Connor. "Tucson Streetcar Phase Two Expansion." The University of Arizona, 2016. http://hdl.handle.net/10150/608579.

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Sustainable Built Environments Senior Capstone Project<br>In a society growing towards alternative modes of transportation, this study explores the phase 2 streetcar expansion for the Tucson area. Using case studies and research articles, a criteria of factors were created to best judge three predetermined expansion routes. A case study was then done on these routes to determine which route would be best for the area. In this study, the factors that were looked at and used to rank the three routes included; population density and average annual income of the surrounding area of the route (400
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2

Winder, Daniel. "Investigating phase transitions using the linear delta expansion." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246678.

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3

Hwang, Moonkyu. "Numerical modeling of the expansion phase of vapor explosions." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/16761.

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4

Abou-Koura, G. H. "Studies of the expansion phase of a laser plasma." Thesis, Swansea University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.635840.

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This thesis describes a theoretical investigation of the expansion phase of a laser-produced plasma. The flow of ions and electrons in the expansion phase was modelled as a "displaced Maxwellian velocity distribution" i.e. the particles were assumed to possess a Maxwellian distribution of velocities relative to an average velocity of mass motion along the whole of the flight path. Using this model equations have been set up to describe the decrease in the electron and ion temperatures and the average charge carried by the ions as the expansion proceeds. This set of non-linear equations describ
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5

Yusoff, Nazrul Hizam. "Stratifying of liquid-liquid two phase flows through sudden expansion." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12939/.

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The transport and separation of oil and water is an essential process to the oil and chemical industries. Although transporting the mixtures is often necessary due to few reasons, it is generally beneficial to separate out the phases in order to reduce installation and maintenance costs, at the same time, avoiding safety problems. Thus, separation of liquid-liquid flows is a necessary part of many industrial processes. Hence, knowledge of two-phase flow dynamics is important for the design optimisation of separators. Therefore, the aim of this research is to investigate the feasibility of a su
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6

Zhang, Yan. "Weakly first-order phase transitions : [epsilon] expansion vs. numerical simulation /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/9715.

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7

Gagliardi, Giuseppe [Verfasser]. "The QCD Phase Diagram from Strong Coupling Expansion / Giuseppe Gagliardi." Bielefeld : Universitätsbibliothek Bielefeld, 2020. http://d-nb.info/1211474089/34.

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8

Kanu, Elizabeth. "Expansion driven Unstable Two Phase Flows in Long Risers and Wells." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14420.

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Flow instabilities in long wells and risers under certain flow conditions, is well known. Expansion driven flow instability (EDI) which is relatively little known, refers to occurrence of flow instabilities in long wells and risers as a result of entrapment of gas upstream of the well or riser base. EDI can also occur in gas-lift systems at low pressure and low gas injection rate.This work was initiated to tackle flow instability problem related to deep water production operations where long wells and risers are extensively in use. The aim of this thesis is to investigate a type of flow instab
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9

Gutierrez, Emmanuel David Mercado. "Thermal expansion coefficient for a trapped Bose gas during phase transition." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-27102016-102903/.

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Ultra cold quantum gas is a convenient system to study fundamental questions of modern physics, such as phase transitions and critical phenomena. This master thesis is devoted to experimental investigation of the thermodynamics susceptibilities, such as the isothermal compressibility and the thermal expansion coefficient of a trapped Bose-Einstein condensate (BEC) of 87Rb atoms. The critical phenomena and the critical exponents across the transition can explain the behavior of the isothermal compressibility and the thermal expansion coefficient near the critical temperature TC. By employing th
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10

Dolgusheva, E. B., and V. Yu Trubitsin. "Lattice Parameters and Thermal Expansion of Zirconium Thin Films." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35222.

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Using the molecular-dynamics method with many-body potential of interatomic interaction we have studied the polymorphism of zirconium thin films. The conditions for stability of metastable bcc(001) and fcc Zr films are determined at constant zero pressure. The dependences of the lattice parameters and thermal expansion coefficients on the temperature and thickness of bcc, fcc and hcp Zr films are calculated. The peculiarities of their variation near structural transformations are discussed. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/352
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11

Pan, Ruijun. "Energy density and volume expansion in solid-liquid phase change, for energy applications." Thesis, KTH, Kraft- och värmeteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-128949.

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Phase change materials (PCMs) have long been studied as thermal energy storage media. However, the Swedish company, Exencotech AB, reaching beyond this usual scope of PCMs, has designed a system that uses PCMs as working medium to produce electricity from waste heat. To achieve high system energy efficiency, PCMs with low heats of fusion and large volume expansions are favored. Interestingly, this is the opposite of the desired properties of a PCM working in energy storage applications. This work has aimed to find suitable alternative PCMs for Exencotech. After an intensive literature survey,
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12

Rose, Kyle. "Synthesis, Phase Development, and the Mechanism for Negative Thermal Expansion in Aluminum Tungstate." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703275/.

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An in-depth study of Al2W3O12 negative thermal expansion (NTE) ceramic was performed, focused on synthesis, phase mappings, and the underlying mechanisms shown to be responsible for NTE. Review of the literature has shown inconsistencies in reported values of the dilatometry measured coefficients of thermal expansion, and the temperature for the known monoclinic to orthorhombic phase transition. Two synthesis techniques are introduced: an ionic-liquid non-hydrolytic sol-gel synthesis route; and a low temperature solid state reaction synthesis for Al2W3O12. X-ray diffraction, Raman spectroscop
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13

Pueschel, Charles A. "First principles approach to understanding stability and phase transitions of metal A(II)B(IV)hexafluorides." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54484.

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14

Brown, Wayne. "Characterisation of low energy ions observed near and during the substorm expansion phase onset." Thesis, University of Warwick, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302621.

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15

Joshi, Darshan Gajanan. "Magnetic quantum phase transitions: 1/d expansion, bond-operator theory, and coupled-dimer magnets." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-198634.

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In the study of strongly interacting condensed-matter systems controlled microscopic theories hold a key position. Spin-wave theory, large-N expansion, and $epsilon$-expansion are some of the few successful cornerstones. In this doctoral thesis work, we have developed a novel large-$d$ expansion method, $d$ being the spatial dimension, to study model Hamiltonians hosting a quantum phase transition between a paramagnet and a magnetically ordered phase. A highlight of this technique is that it can consistently describe the entire phase diagram of the above mentioned models, including the quantum
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16

Shaw, Leah Belinda. "Monte Carlo and Series Expansion Studies of the Anisotropic Driven Ising Lattice Gas Phase Diagram." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31851.

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While the statistical mechanics of systems in thermal equilibrium is a well established discipline, nonequilibrium systems are fundamentally much less well understood, even though most natural phenomena fall into the latter category. In particular, there is as yet no nonequilibrium analog for the systematic formalism of Gibbs ensembles. Rather than deal with the difficult problem of general nonequilibrium systems, this study is restricted to the steady states of a simple model whose equilibrium properties are well known. <P> The Ising lattice gas displays a number of surprising phenomena when
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17

Liu, Zhi. "Transition Metal Nitrides and Their Solid Solutions: A First-Principles Approach with Cluster Expansion Computational Predictive Models." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1492525178190092.

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18

Youssef, Walid Mohamed Khalil Abdalla. "Experimental and computational study of indirect expansion solar assisted heat pump system with latent heat storage for domestic hot water production." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15263.

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Solar assisted heat pump (SAHP) systems have been widely applied in domestic hot water (DHW) production due to their sustainability and stability in operations. However, their performance efficiency requires further improvement using advanced technologies such as energy storage with phase change materials (PCM) and optimal system controls. Undoubtedly, employing PCMs for latent heat storage (LHS) application has a great potential to improve a solar thermal application performance. Despite this fact, the use of PCM in this area is quite limited due to the poor thermal conductivity of available
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19

Hartig, Maximilian [Verfasser], and T. [Akademischer Betreuer] Schulenberg. "Numerical Simulation of Fluid-Structure Interaction during the Expansion Phase in Sodium Cooled Fast Reactors / Maximilian Hartig ; Betreuer: T. Schulenberg." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/120047130X/34.

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20

Cronin, Joseph M. "Exploring Capabilities of Electrical Capacitance Tomography Sensor & Velocity Analysis of Two-Phase R-134a Flow Through a Sudden Expansion." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1495541577975687.

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21

Quinteros, Milton I. "Trellis Coded Modulation Schemes Using A New Expanded 16-Dimensional Constant Envelope Quadrature-Quadrature Phase Shift Keying Constellation." ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/924.

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In this thesis, the author presents and analyzes two 4-dimensional Constant Envelope Quadrature-Quadrature Phase Shift Keying constellations. Optimal demodulators for the two constellations are presented, and one of them was designed and implemented by the author. In addition, a novel expanded 16-dimensional CEQ2PSK constellation that doubles the number of points without decreasing the distance between points or increasing the peak energy is generated by concatenating the aforementioned constellations with a particular method and restrictions. This original 16-dimensional set of symbols is set
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22

Berg, Adrianus J. J. van den [Verfasser], and Heinrich [Akademischer Betreuer] Leonhardt. "Influence of cell-cycle phase in hematopoietic stem cell lineage production and expansion / Adrianus J. J. van den Berg ; Betreuer: Heinrich Leonhardt." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1120923603/34.

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23

Baptista, Gualter Barbas. "Bridging environmental conflicts with social metabolism : forestry expansion and socioeconomic change." Doctoral thesis, FCT - UNL, 2010. http://hdl.handle.net/10362/5891.

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Dissertação apresentada para obtenção do Grau de Doutor em Ciências do Ambiente, pela Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia<br>Environmental conflicts have traditionally been approached from several scientific fields. However, the different theoretical and empirical developments have proceeded in parallel, with often competing descriptive languages. Furthermore, they tend to focus on resolution, while neglecting the role of conflicts as an expression of groups facing social and ecological injustices perpetrated by the hegemony. This research attempted to build a poli
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24

Faure, Rémi. "Neutrinos, cosmological phase transitions and the matter-antimatter asymmetry of the Universe." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP081.

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L'asymétrie entre matière et antimatière est un problème non résolu de la cosmologie. Une approche populaire pour l'expliquer est la leptogénèse avec des neutrinos stériles, qui sont des particules motivées expérimentalement pour expliquer les masses des neutrinos actifs du Modèle Standard. Il est possible d'inclure dans les scénarios de leptogénèse une transition de phase cosmologique qui donne leur masse aux neutrinos stériles. Cette idée est intéressante phénoménologiquement, car une transition de phase produit des ondes gravitationnelles pouvant être détectées. À la température de la trans
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25

Nilsson, Linnéa, Peter Enhörning, and Christoffer Lindgren. "Thoughts and reasoning in family businesses : Founders thoughts and reasoning behind decisionsduring the expansion phase in a first generation family business with few owners." Thesis, Linnéuniversitetet, Ekonomihögskolan, ELNU, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-20364.

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This thesis focuses on the decision making in the most common business form: family businesses. A well-established theoretical model within the family business field is The three circle-model, which is based on three different dimensions: family, ownership and business. Most of the family businesses stay small but the ones expanding face the dilemma of balancing the best development of the dimensions. However, these three dimensions can contradict each other and as a result the founders are forced to choose which of the dimensions to prioritize when taking decisions.The purpose of this thesis
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26

Perchet, Guillaume. "Analyse des erreurs de phase introduites par l'électronique de réception d'un télémètre laser par déphasage : expansion du déphasage permettant la mesure à haute résolution." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT074H.

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Cette these prend en compte les conditions de realisations d'une electronique de reception d'un telemetre laser par mesure du dephasage a haute resolution et a grande dynamique. La premiere partie porte sur la modelisation des sources d'erreur du dephasage en fonction de l'amplitude du signal photoelectrique et de la stabilite en frequence des oscillateurs. On modelise le circuit differentiel a emetteurs couples en haute frequence et a forts niveaux avec degenerescence sur les emetteurs. L'analyse est appliquee aux circuits ecreteurs, aux amplificateurs a gain controle, puis aux circuits melan
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27

Yamada, Ryo. "Application of Steepest-Entropy-Ascent Quantum Thermodynamics to Solid-State Phenomena." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85866.

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Steepest-entropy-ascent quantum thermodynamics (SEAQT) is a mathematical and theoretical framework for intrinsic quantum thermodynamics (IQT), a unified theory of quantum mechanics and thermodynamics. In the theoretical framework, entropy is viewed as a measure of energy load sharing among available energy eigenlevels, and a unique relaxation path of a system from an initial non-equilibrium state to a stable equilibrium is determined from the greatest entropy generation viewpoint. The SEAQT modeling has seen a great development recently. However, the applications have mainly focused on gas pha
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28

Joshi, Darshan Gajanan [Verfasser], Matthias [Akademischer Betreuer] Vojta, and Fabian [Akademischer Betreuer] Essler. "Magnetic quantum phase transitions: 1/d expansion, bond-operator theory, and coupled-dimer magnets / Darshan Gajanan Joshi. Betreuer: Matthias Vojta. Gutachter: Matthias Vojta ; Fabian Essler." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://d-nb.info/1088185932/34.

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Joshi, Darshan Gajanan [Verfasser], Matthias [Akademischer Betreuer] Vojta, and Fabian H. L. [Akademischer Betreuer] Essler. "Magnetic quantum phase transitions: 1/d expansion, bond-operator theory, and coupled-dimer magnets / Darshan Gajanan Joshi. Betreuer: Matthias Vojta. Gutachter: Matthias Vojta ; Fabian Essler." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-198634.

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30

Roman, Abdeel J. "Studies of Horizontal Two-Phase Flow Using Electrical Capacitance Tomography and R-134a." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1510840347116138.

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31

Davis, Andrew Scott. "Temperature Induced Deflection of Yttria Stabilized Zirconia Membranes." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338369600.

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32

Agarwal, Akhil. "Heat Transfer and Pressure Drop During Condensation of Refrigerants in Microchannels." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14129.

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Two-phase flow, boiling, and condensation in microchannels have received considerable attention in the recent past due to the growing interest in the high heat fluxes made possible by these channels. This dissertation presents a study on the condensation of refrigerant R134a in small hydraulic diameter (100 < Dh < 160 mm) channels. A novel technique is used for the measurement of local condensation heat transfer coefficients in small quality increments, which has typically been found to be difficult due to the low heat transfer rates at the small flow rates in these microchannel
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33

Chalfi, Toufik Yacine. "Pressure loss associated with flow area change in micro-channels." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/24725.

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34

He, Mi. "Caractérisation du comportement à rupture des alliages de zirconium de la gaine du crayon combustible des centrales nucléaires dans la phase post-trempe d'un APRP (Accident de Perte de Réfrigérant Primaire)." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00819279.

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Dans le cadre des études visant à garantir l'intégrité de la gaine du crayon combustible, EDF est amené à caractériser la ductilité de la gaine après un Accident de Perte de Réfrigérant Primaire (APRP). La thèse porte sur la caractérisation du comportement à rupture des gaines en Zircaloy-4 détendu pour lesquels les conditions d'APRP ont été simulées en laboratoire par une oxydation à haute température suivie d'un refroidissement. L'oxydation est effectuée à 1100°C et à 1200°C pour différentes durées ce qui conduit à des niveaux d'oxydation de 3% à 30% d'ECR (Equivalent Cladding Reacted). Deux
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35

Guo, Longkai. "Numerical investigation of Taylor bubble and development of phase change model." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI095.

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Le mouvement d'une bulle d'azote de Taylor dans des solutions mixtes glycérol-eau s'élevant à travers différents types d'expansions et de contractions est étudié par une approche numérique. La procédure CFD est basée sur un solveur open-source Basilisk, qui adopte la méthode du volume de fluide (VOF) pour capturer l'interface gaz-liquide. Les résultats des expansions/contractions soudaines sont comparés aux résultats expérimentaux. Les résultats montrent que les simulations sont en bon accord avec les expériences. La vitesse de la bulle augmente dans les expansions soudaines et diminue dans le
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Aulbach, Maximilian Wolfgang [Verfasser]. "Magnetic order and magnetic phase transitions in triangular or depleted periodic Anderson lattices: Studies within the framework of dynamical mean-field theory powered by hybridization expansion continuous-time quantum Monte Carlo / Maximilian Wolfgang Aulbach." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2021. http://d-nb.info/1236695046/34.

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37

Young, Lindsay Kay. "Synthesis and Characterization of A2Mo3O12 Materials." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1431517117.

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38

Latham, Tina Joy. "Structure and properties of MTiOXO←4 crystals." Thesis, University of Warwick, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364604.

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39

Belmkaddem, Kawtar. "Contrôle du rayonnement des antennes miniatures." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT031.

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Dans le contexte actuel où l’évolution des systèmes sans-fil est jugée importante, il estnécessaire de pouvoir réduire les pollutions électromagnétiques qui limitent l’acceptabilité descommunications et la cohabitation des systèmes. D’une façon générale, les besoins de contrôle durayonnement des antennes miniatures répondent donc à une demande croissante pour améliorer lesportées mais aussi pour limiter les interférences dans les systèmes sans-fil. Ces dernières années,malgré le développement connu dans les domaines des antennes, la question du contrôle durayonnement des antennes miniatures co
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Mouly, Aude. "Modélisation de la formation et de la détente rapide d'une bulle polyphasique pour l'évaluation des conséquences d'un accident grave de RNR_Na." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0362.

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Une nouvelle génération de réacteurs est aujourd'hui développée pour répondre aux enjeux économiques, environnementaux et sociétaux du 21e siècle. Parmi les différents concepts retenus pour créer cette quatrième génération, les réacteurs à neutrons rapides à caloporteur sodium (RNR-Na) sont étudiés dans le cadre de cette thèse. Ce sont les seuls réacteurs de quatrième génération présentant déjà un retour d'expérience considérable en France. Afin de répondre aux objectifs de sûreté de cette nouvelle génération, la démarche d'étude de sûreté doit être adaptée dès les phases de préconception et d
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Bouzar, Khalida. "Approche thermodynamique de l'organisation moléculaire de la phase liquide du toluène sous pression : détermination des expansivités et compressibilités sivities." Paris 6, 1986. http://www.theses.fr/1986PA066312.

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Mesures, par la méthode piezothermique, du coefficient de dilatation thermique et du coefficient de compressibilité isotherme, dans l'intervalle 200-450 k, sous des pressions atteignant 4000 bars; ajustement des résultats, établissement d'une équation phénoménologique du coefficient de dilatation comme fonction de la pression et de la température, permettant la détermination des propriétés thermodynamiques. Discussion de l'organisation moléculaire à la lumière des résultats obtenus et de données spectroscopiques (RMN, diffusion de la lumière).
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Yang, Limin. "Liquid-liquid two-phase flows at T-junctions and through expansions." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404047.

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Sloan, Jennifer Marina. "Controlling leaf growth by phased induction of expansin." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.522368.

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44

Gana, Inès. "Caractérisation physique et chimique des substances à activité thérapeutique : application aux études de profil de stabilité et de préformulation." Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCB164/document.

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Le développement d’un médicament pour une cible thérapeutique donnée passe par plusieurs étapes qui se résument en une étape de criblage, une phase préclinique et plusieurs phases cliniques. Ces étapes permettent de sélectionner une substance active et de démontrer son efficacité thérapeutique et sa sécurité toxicologique. Ces deux critères définissent la qualité du médicament qui, une fois démontrée, doit être garantie pendant toute sa durée de validité. La qualité est évaluée au moyen d’études de stabilité qui sont réalisées d’abord sur la matière première de la substance active au cours de
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Lavrentovich, Maxim Olegovich. "Diffusion, Absorbing States, and Nonequilibrium Phase Transitions in Range Expansions and Evolution." Thesis, Harvard University, 2014. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13070032.

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The spatial organization of a population plays a key role in its evolutionary dynamics and growth. In this thesis, we study the dynamics of range expansions, in which populations expand into new territory. Focussing on microbes, we first consider how nutrients diffuse and are absorbed in a population, allowing it to grow. These nutrients may be absorbed before reaching the population interior, and this "nutrient shielding" can confine the growth to a thin region on the population periphery. A thin population front implies a small local effective population size and enhanced number fluctu
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Pérez, Mellor Ariel. "Effets d’environnement sur la reconnaissance chirale : une étude spectroscopique." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS466.

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Ce travail est consacré à l’étude des effets de chiralité dans des dipeptides cycliques construits sur un cycle dikétopiperazine (DKP) et comportant deux résidus de chiralités identiques ou opposées, LL et LD. Les mêmes systèmes sont étudiés dans différents environnements par spectroscopie optique couplée à des calculs de chimie quantique. Les molécules neutres sont isolées et refroidies en jet supersonique et caractérisées par spectroscopie laser UV et IR sélective en conformère. La structure des systèmes protonés, isolés dans un spectromètre de masse ICR, est déterminée par spectroscopie de
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Han, Jingyi. "Phrase table expansion for statistical machine translation with reduced parallel corpora: the Chinese-Spanish case." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/458530.

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Parallel data scarcity problem is a major challenge faced by Statistical Machine Translation (SMT). The aim of this thesis is to enrich a SMT system by adding more morphological variants and new translation lexicon automatically generated out of monolingual data. To induce bilingual lexicon, instead of taking advantages of comparable corpora or parallel data, we proposed a supervised classifier trained using monolingual features (e.g. word embedding vectors, plus Brown clustering or word frequency information) of only a small amount of translation equivalent word pairs. The classifier is able
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48

Li, Guanshu. "Etude du phénomène de l'expansion sulfatique dans les bétons : comportement des enrobés de déchets radioactifs sulfatés." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1994. http://tel.archives-ouvertes.fr/tel-00523043.

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Le problème d'attaque des bétons par sulfates demeure d'actualité dans le domaine du stockage des déchets radioactifs, parce que certains déchets contiennent des sulfates. Le présent rapport contribue à l'étude des mécanismes de dégradation des enrobés de déchets radioactifs par sulfate. Les systèmes expansifs CaO-Al2O3-SO3-H2O sans et avec alcalins ont été étudiés. Dans le système sans alcalins, c'est la formation de l'ettringite secondaire par apport d'eau externe qui conduit à l'expansion importante par effet stérique. Dans le système avec alcalins, les comportements d'expansion sont complè
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49

Shafeie, Samrand. "Structure and Properties Investigations of the La2Co1+z(Ti1-xMgx)1-zO6 Perovskite System." Licentiate thesis, Stockholms universitet, Institutionen för material- och miljökemi (MMK), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-55418.

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Perovskite based materials have great potentials for various energy applications and the search for new materials for uses in SOFCs has largely been concentrated to this class of compounds. In this search, we have studied perovskite phases in the system La2Co1+z(Ti1-xMgx)1-zO6, with 0  x 0.9 and z = 0.0, 0.2, 0.4, 0.6. Crystal structures were characterized by XRD and, for selected compositions, also by NPD and SAED. They exhibit with increasing x, as well as increasing z, a progressive increase in symmetry from monoclinic to orthorhombic to rhombohedral. The main focus in this work has been on
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50

Canivenc, Romain. "Assemblage de bagues par expansion : définition de modèles et d’outils d’assistance utiles aux phases de prédimensionnement." Toulouse, INSA, 2009. http://www.theses.fr/2009ISAT0007.

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La simplicité, l’efficacité et les nombreux domaines d’applicabilité du procédé d’assemblage par expansion à froid le rendent particulièrement attrayant. La prédiction de l’état résiduel est rendue complexe par la non linéarité du comportement des matériaux écrouissables et les multiples combinaisons de caractéristiques géométriques et matérielles qui sont à l’origine de situations de non-assemblage. . . .<br>The bushing assembly by a coldworking process is particularly attractive thanks to its simplicity and its relevant efficiency in numerous design cases. The non linear behaviour of hardeni
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