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Dissertations / Theses on the topic 'Non-collapse'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Ferialdi, Luca. "Non-Markovian collapse models." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3582.

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2008/2009<br>We introduce the measurement problem in quantum mechanics and we briefly discuss the solutions proposed in literature. We then focus our attention on models of spontaneous wavefunction collapse. We describe the two most popular models (GRW, CSL) and list other proposals. We analyze in detail a third collapse model (QMUPL), which is particularly simple (but physically meaningful) to be studied in great mathematical detail. We discuss its main properties. We also describe a "finite temperature" version of this model, which includes dissipative terms. These models are M

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2

von, Braun-Bates F. "Non-linear gravitational collapse in extended gravity theories." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:910fd25d-38e0-4bd4-84cf-bf5c196c8f99.

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General Relativity (GR) is one theory amongst a wider range of plausible descriptions of the Universe. The aim of this thesis is to examine the behaviour of so-called screened theories, which are designed to avoid local tests of modified gravity (MG). We establish that these theories may be treated in a unified manner in the context of halo formation. A prerequisite for this is the clarification that the quasi-static approximation can be applied in cosmologically-plausible scenarios. Amongst the plethora of MG theories, we select three, each of which exhibit a different form of screening. This

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3

Kgoboko, Kobamelo. "Collapse behaviour of non-ductile partially prestressed concrete bridge girders." Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09EN/09enk445.pdf.

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4

Amanik, Philip. "Effects of non-standard neutrino flavor changing interactions in core collapse supernovae." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3216385.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed September 5, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 87-89).

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5

Johnsen, Eric Brennen Christopher E. Colonius Timothy E. "Numerical simulations of non-spherical bubble collapse : with applications to shockwave lithotripsy /." Diss., Pasadena, Calif. : California Institute of Technology, 2008. http://resolver.caltech.edu/CaltechETD:etd-05092008-171346.

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6

JONES, CAITLIN ISOBEL. "Special Relativity and Spontaneous Collapse Models." Doctoral thesis, Università degli Studi di Trieste, 2021. http://hdl.handle.net/11368/2995656.

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The work of this PhD investigates spontaneous collapse models, which are a proposed modification of quantum mechanics and their consistency with special relativity. Since soon after they were first proposed there have been many attempts to construct a relativistic collapse model, but currently there is not a satisfactory model. This thesis considers what it means for an irreversible dynamics to be consistent with special relativity and reviews the existing proposals and their issues. The key results are a demonstration of why a relativistic point-like collapse model is not possible and that

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7

Baradaran, Shoraka Majid. "Collapse assessment of concrete buildings : an application to non-ductile reinforced concrete moment frames." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45000.

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Existing reinforced concrete buildings lacking details for ductile response during earthquake shaking represent prevalent construction type in high seismic zones around the world. Seismic rehabilitation of these existing buildings plays an important role in reducing urban seismic risk; however, with the massive inventory of existing concrete buildings and high costs of seismic rehabilitation, it is necessary to start by identifying and retrofitting those buildings which are most vulnerable to collapse. The collapse of most non-ductile concrete buildings will be controlled by the loss of supp

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8

Saletes, Izella. "Cavitation par excitation acoustique bifréquentielle : application à la thrombolyse ultrasonore." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00463267.

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Dans nombre d'applications thérapeutiques des ultrasons, il peut être intéressant d'augmenter l'activité de cavitation inertielle tout en limitant au maximum les intensités utilisées : ceci permet de maximiser les effets mécaniques des ultrasons au niveau des tissus visés tout en minimisant les échauffements des tissus environnants. L'étude expérimentale présentée ici ² porte sur la modification des seuils de cavitation inertielle et de l'activité de cavitation au-delà du seuil lorsqu'un signal bifréquentiel comportant deux composantes fréquentielles proches est utilisé. Le caractère non linéa

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9

Kellermann, Thorsten. "Accurate numerical relativity simulations of non-vacuumspace-times in two dimensions and applications to critical collapse." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2012/5957/.

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This Thesis puts its focus on the physics of neutron stars and its description with methods of numerical relativity. In the first step, a new numerical framework the Whisky2D code will be developed, which solves the relativistic equations of hydrodynamics in axisymmetry. Therefore we consider an improved formulation of the conserved form of these equations. The second part will use the new code to investigate the critical behaviour of two colliding neutron stars. Considering the analogy to phase transitions in statistical physics, we will investigate the evolution of the entropy of the neutron

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10

Achitouv, Ixandra. "Halo mass function of dark matter halos : imprints of the initial matter density field and of the non-linear collapse." Paris 7, 2012. http://www.theses.fr/2012PA077245.

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11

Kellermann, Thorsten [Verfasser], and Bernard F. [Akademischer Betreuer] Schutz. "Accurate numerical relativity simulations of non-vacuumspace-times in two dimensions and applications to critical collapse / Thorsten Kellermann. Betreuer: Bernard F. Schutz." Potsdam : Universitätsbibliothek der Universität Potsdam, 2012. http://d-nb.info/1022489259/34.

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12

FORNI, DANIELE. "Progressive collapse induced by fire and blast." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2674396.

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Comprehensive finite element modelling of key elements is essential to improve the robustness assessment of structures subjected to a coupled effect of fire and blast. Focusing the attention on steel structures, a method for a realistic multi-hazard approach is presented. The problem has been investigated at the material level first and then at the structural level. The material level was studied performing a detailed experimental investigation in a wide range of strain rates and temperatures. A typical structural steel, namely S355, has been studied. A Split Hopkinson Tensile Bar equipped wit

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13

Selli, Nicola. "Static and seismic analysis of a historic masonry building in San Pio delle Camere." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.

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In February 2021, in San Pio delle Camere, on the Navelli plateau south-east of L'Aquila, a masonry building collapsed suddenly, after repair work had just begun on the damage caused by the 2009 earthquake. The current study, after a detailed examination of all the design documentation and the comparison of the post-earthquake damage with the results of the analysis on the model, finding an excellent correspondence, went to research the possible causes of the structural collapse, which occurred in static conditions. The masonry texture was then analysed, consisting of unworked natural stones o

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14

Blythe, Thomas. "Taking magnetic resonance into industrial applications." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/273874.

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Magnetic resonance (MR) is a highly versatile technique with great potential for use in industrial applications; from the in situ study of unit operations to the optimisation of product properties. This thesis, concerned with the latter, is divided into two parts. Firstly, dynamic MR is applied to characterise the flow behaviour, or rheology, of process fluids. Such characterisation is typically performed using conventional rheometry methods operating offline, with an online, or inline, method sought for process control and optimisation. Until recently, MR was an unlikely choice for this appli

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15

Saletes, Izella. "Cavitation par excitation acoustique bifréquentielle : application à la thrombolyse ultrasonore." Electronic Thesis or Diss., Lyon 1, 2009. http://www.theses.fr/2009LYO10311.

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Dans nombre d’applications thérapeutiques des ultrasons, il peut être intéressant d’augmenter l’activité de cavitation inertielle tout en limitant au maximum les intensités utilisées : ceci permet de maximiser les effets mécaniques des ultrasons au niveau des tissus visés tout en minimisant les échauffements des tissus environnants. L’étude expérimentale présentée ici ² porte sur la modification des seuils de cavitation inertielle et de l’activité de cavitation au-delà du seuil lorsqu’un signal bifréquentiel comportant deux composantes fréquentielles proches est utilisé. Le caractère non linéa

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16

ANTONELLI, Riccardo. "Black Objects without a Vacuum." Doctoral thesis, Scuola Normale Superiore, 2020. http://hdl.handle.net/11384/95124.

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We explore the behavior of gravitational solitons in classical theories with pathological vacua. We first focus on non-tachyonic non-supersymmetric string theories and the construction of brane solutions in the corresponding effective theories, which do not admit a maximally-symmetric vacuum. We then turn to metastable vacua and the holographic interpretation of the vacuum bubbles that may be produced therein by quantum tunneling. Finally, we discuss self-similar collapse solutions, with an eye to analogies with the settings considered in the preceding chapters.

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17

Afara, Isaac Oluwaseun. "Near infrared spectroscopy for non-destructive evaluation of articular cartilage." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/53217/1/Isaac_Afara_Thesis.pdf.

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There is a need for an accurate real-time quantitative system that would enhance decision-making in the treatment of osteoarthritis. To achieve this objective, significant research is required that will enable articular cartilage properties to be measured and categorized for health and functionality without the need for laboratory tests involving biopsies for pathological evaluation. Such a system would provide the capability of access to the internal condition of the cartilage matrix and thus extend the vision-based arthroscopy that is currently used beyond the subjective evaluation of surgeo

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18

Fatahizadeh, Marieh. "Modelling of soil collapse induced by water infiltration : implications for foundation stability." Electronic Thesis or Diss., Strasbourg, 2025. http://www.theses.fr/2025STRAD003.

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Cette thèse étudie le mécanisme d'effondrement et son effet sur le tassement des fondations en appliquant des cadres numériques et analytiques. La méthode analytique a utilisé les propriétés géotechniques de base pour développer un modèle prédictif du potentiel d'effondrement. Le modèle hydromécanique a été développé au sein du modèle numérique, qui évalue plusieurs scénarios tels que la montée de la nappe phréatique, l'infiltration (unilatérale et bilatérale) et l'évaporation avant infiltration. Le degré initial de saturation est identifié comme le principal paramètre affectant l'effondrement

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19

Muñoz-Castelblanco, José. "Comportement hydromécanique d'un loess naturel." Phd thesis, Université Paris-Est, 2011. http://pastel.archives-ouvertes.fr/pastel-00647891.

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Ce mémoire de thèse est consacré à l'étude expérimentale du comportement hydromécanique d'un lœss naturel non saturé effondrable provenant d'un site proche de la ville de Bapaume (nord de la France) dans une zone où des problèmes de tassement le long de la ligne nord du TGV ont été attribués à l'effondrement du lœss, du fait d'infiltrations d'eau. Un nouvel appareil triaxial permettant de mesurer localement l'ensemble des caractéristiques du loess non saturé (déformation, teneur en eau et succion) a été développé. La courbe de rétention d'eau, déterminée à l'aide d'un tensiomètre de haute capa

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20

Ferrari, Rosalba (ORCID:0000-0002-3989-713X). "An elastoplastic finite element formulation for the structural analysis of Truss frames with application to ha historical iron arch bridge." Doctoral thesis, Università degli studi di Bergamo, 2013. http://hdl.handle.net/10446/28959.

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This doctoral thesis presents a structural analysis of the Paderno d’Adda Bridge, an impressive iron arch viaduct built in 1889 and located in Lombardia region (Italy). The thesis falls in the context of a research activity started at University of Bergamo since 2005, that is still ongoing and aims to perform an evaluation of the present state of conservation of the bridge. In fact, the bridge is currently still in service and its important position in the context of transport network will soon lead to questions about its future destination, with particular attention to the evaluation of the

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21

Sénégond, Nicolas. "APPROCHE TEMPORELLE DE LA SIMULATION ET DE LA CARACTÉRISATION DES TRANSDUCTEURS ULTRASONORES CAPACITIFS MICRO-USINÉS." Phd thesis, Université François Rabelais - Tours, 2010. http://tel.archives-ouvertes.fr/tel-00738359.

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Les transducteurs ultrasonores capacitifs micro-usinés (cMUT : capacitive Micromachined Ultrasound Transducers) sont aujourd'hui une nouvelle alternative à la transduction d'ondes ultrasonores. En comparaison avec la technologie piézoélectrique, ils offrent de nombreuses potentialités en termes de fiabilité, de production, de miniaturisation et d'intégration, d'une électronique associée mais aussi en termes de performances acoustiques. Les voies d'application de ces dispositifs, dédiés initialement à l'imagerie médicale, sont aujourd'hui étendues à de nombreux domaines tels que la thérapie, le

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22

Menchel, Kfir. "Progressive collapse: comparison of main standards, formulation and validation of new computational procedures." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210452.

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Throughout recent history, famous records of building failures may be found, unfortunately accompanied by great human loss and major economic consequences. One of the mechanisms of failure is referred to as ‘progressive collapse’: one or several structural members suddenly fail, whatever the cause (accident or attack). The building then collapses progressively, every load redistribution causing the failure of other structural elements, until the complete failure of the building or of a major part of it. The civil engineering community’s attention to this type of event was first drawn by the pr

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23

Wilson, Jonathan P. "Non-linear dynamics and power systems." Thesis, University of Bath, 2000. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341136.

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24

Vernier, Eric. "Non compact conformal field theories in statistical mechanics." Thesis, Paris, Ecole normale supérieure, 2015. http://www.theses.fr/2015ENSU0005/document.

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Les comportements critiques des systèmes de mécanique statistique en 2 dimensions ou de mécanique quantique en 1+1 dimensions, ainsi que certains aspects des systèmes sans interactions en 2+1 dimensions, sont efficacement décrits par les méthodes de la théorie des champs conforme et de l'intégrabilité, dont le développement a été spectaculaire au cours des 40 dernières années. Plusieurs problèmes résistent cependant toujours à une compréhension exacte, parmi lesquels celui de la transition entre plateaux dans l'Effet Hall Quantique Entier. La raison principale en est que de tels problèmes sont

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25

El, Hajj Diab Mohammad. "Analyse de la robustesse structurale : caractérisation des actions accidentelles et/ou exceptionnelles et de leurs effets sur les structures." Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC2079.

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Plusieurs exemples de structures ont subit des endommagements conséquents, avec dans certains cas un effondrement, à la suite d’une propagation de la défaillance résultant d’une action accidentelle ou exceptionnelle. Ces évènements catastrophiques soulignent l’importance d’un dimensionnement n’étant pas limité à la seule vérification de la sécurité dans des conditions accidentelles, mais préserve une capacité résiduelle suffisante pour ne pas engendrer d’effondrement progressif sous l’action d’évènements exceptionnels n’ayant pas été identifiés à l’étape de dimensionnement. Les codes de concep

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26

De, Gracia Lux Caroline. "Amphiphiles semi-fluorés non-polaires : synthèse-nanostructuration d’espaces à 2D et 3D." Strasbourg, 2010. http://www.theses.fr/2010STRA6097.

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Ce travail de thèse s'inscrit dans le domaine des molécules amphiphiles semi-fluorées et s'étend de la synthèse de nouvelles architectures à l'investigation de leurs propriétés d'auto-assemblage à 2D et à 3D. Il s'articule principalement autour de l'élaboration et de l'étude de films fins obtenus par auto-assemblage d'amphiphiles semi-fluorés, avec pour objectif de créer des surfaces décorées par des nanodomaines de tailles et formes contrôlées. La première partie de ce travail analyse la compression de nano-objets auto-assemblés constitués de diblocs FnHm(F(CF2)n(CH2)mH), conduisant à la form

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27

Cupani, Guido. "Non equilibrium dynamics of galaxy clusters." Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3065.

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2007/2008<br>The thesis is focused on the dynamics of galaxies in the outskirts of galaxy clusters, where the matter is affected by an overall infall motion towards the cluster centre. Starting from the classical results of the spherical collapse model, we determined new theoretical constraints for the mass profile of clusters as a function of the cosmological parameters. We investigated the importance of the turnaround radius (i.e. the radius where the infall motion counterbalances the Hubble expansion motion) as well as the possibility of directly extracting the mass profile from the infall

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28

Nassiri, Esmail. "Modelling nonlinear behaviour of two-dimensional steel structures subjected to cyclic loading." Thesis, Queensland University of Technology, 1998.

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29

Kgoboko, Kobamelo. "Collapse behaviour of non-ductile partially prestressed concrete bridge girders." Thesis, 1987. http://hdl.handle.net/2440/115779.

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30

Johnsen, Eric. "Numerical Simulations of Non-Spherical Bubble Collapse with Applications to Shockwave Lithotripsy." Thesis, 2008. https://thesis.library.caltech.edu/1712/1/johnsen2007.pdf.

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<p>Shockwave lithotripsy (SWL) is a non-invasive medical procedure in which shockwaves are focused on kidney stones in an attempt to break them. Because the stones are usually immersed in liquid, cavitation occurs during the process. However, the stone comminution mechanisms and the bubble dynamics of SWL are not fully understood. In the present thesis, numerical simulations are employed to study axisymmetric Rayleigh collapse and shock-induced collapse of a single gas bubble in a free field and near a wall. A high-order accurate, quasi-conservative, shock- and interface-capturing scheme is d

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31

Cooper, Neil. "State Collapse as Business: The role of conflict trade and the emerging control agenda." 2002. http://hdl.handle.net/10454/3754.

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No<br>This article examines the role played by conflict trade in the process of state collapse. Conflict trade is defined here as the trade in non¿military goods such as diamonds, timber and drugs that finances war. Such trade includes both the export and import of goods to a war zone as well as extra¿territorial trade undertaken by supporters of a warring faction. It is argued that the decline of superpower military aid coupled with the broader effects of centre¿periphery exploitation mediated through a neo¿liberal and western imposed version of globalization has meant such trade has a partic

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32

Banks, Marcus A. "Towards a Continuum of Scholarship: The Eventual Collapse of the Distinction Between Grey and non-Grey Literature." 2005. http://hdl.handle.net/10150/105890.

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This is a presentation of 12 slides at GL7: Seventh International Conference on Grey Literature, Nancy, France. The presentation argues that distinction between grey and non-grey (or white) literature will become less relevant over time, as online discovery options proliferate. In the meantime, the political success of the open access publishing movement has valuable lessons for proponents of increasing access to grey literature.

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33

Spyridaki, Athina. "Response Variability of Statically Determinate Beam Structures Following Non-Linear Constitutive Laws and Analytical identication of progressive collapse modes of steel frames." Thesis, 2017. https://doi.org/10.7916/D8GT5SSC.

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This thesis is divided into two distinct and independent parts. Part I focuses on the extension of the concept of Variability Response Function (VRF). The focus of research community has recently shifted from the improvement of structural models and enhancement of the performance of computational tools in a deterministic framework towards the development of tools capable of quantifying the uncertainty of parameters of the structural system and their effect on the system response in a probabilistic framework. One limitation to this direction is the inadequacy of information to fully describe th

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Yee, Donna. "The Expanding Diversity of Plant U-box E3 Ubiquitin Ligases in Arabidopsis: Identifying AtPUB18 and AtPUB19 Function during Abiotic Stress Responses." Thesis, 2010. http://hdl.handle.net/1807/26265.

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The ability of plants to sense and respond to environmental and endogenous signals is essential to their growth and development. As part of these diverse cellular functions, ubiquitin-mediated proteolysis has emerged to be an important process involved in how plant signalling pathways can be regulated in response to such cues. Of the three enzymes involved in linking ubiquitin to protein targets, E3 ubiquitin ligases are of interest as they confer substrate specificity during this ubiquitination process. The overall focal point of this research is on plant U-box (PUB) E3 ubiquitin ligases,

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