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Dissertations / Theses on the topic 'Spectral curve'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Belliard, Raphaël. "Geometry of integrable systems : from topological Lax systems to conformal field theories." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066175/document.

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Cette thèse de doctorat traite d’un cadre en géométrie complexe et de méthodes pouvant y être développées pour résoudre des ensembles d’équations différentielles compatibles venant de systèmes intégrables, classiques ou quantiques, dans le contexte de la géométrie d’espaces de modules de connexions au-dessus de courbes complexes, ou surfaces de Riemann. Elle vient de l’idée en physique mathématique que les symétries des systèmes intégrables imposent aux objets d’intérêt (fonctions de partitions ou de corrélations) des contraintes algébro-différentielles nommées équations de boucles. Le but est

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Klabbers, Rob [Verfasser], та Gleb [Akademischer Betreuer] Arutyunov. "Quantum Spectral Curve for the η-deformed AdS5 × S5 superstring / Rob Klabbers ; Betreuer: Gleb Arutyunov". Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1156462355/34.

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3

Weishaupt, Holger. "A study of power spectral densities of real and simulated Kepler light curves." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45802.

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During the last decade, the transit method has evolved to one of the most promising techniques in the search for extrasolar planets and the quest to find other earth-like worlds. In theory, the transit method is straight forward being based on the detection of an apparent dimming of the host star’s light due to an orbiting planet traversing in front of the observer. However, in practice, the detection of such light curve dips and their confident ascription to a planetary transit is heavily burdened by the presence of different sources of noise, the most prominent of which is probably the so ca

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4

Rana, Suman. "RISK-TARGETED GROUND MOTION FOR PERFORMANCE- BASED BRIDGE DESIGN." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2137.

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The seismic design maps on ASCE 7-05, International Building Code- 2006/2009, assumed uniform hazard ground motion with 2% probability of exceedance in 50 years for the entire conterminous U.S. But, Luco et al in 2007 pointed out that as uncertainties in collapse capacity exists in structures, an adjustment on uniform hazard ground motion was proposed to develop new seismic design maps. Thus, risk-targeted ground motion with 1% probability collapse in 50 years is adopted on ASCE 7-10. Even though these seismic design maps are developed for buildings, performance-based bridge design is done usi

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Ullah, Irfan. "Caracterização da subsuperfície rasa através da curva da razão espectral H/V e da inversão conjunta das curvas de dispersão e elipticidade." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-04062018-101840/.

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A destruição causada por um terremoto depende de muitos fatores, como características e profundidade da fonte, magnitude, distância epicentral e da configuração geológica da área. A destruição causada devido à configuração geológica da área é denominada como efeito local. A modelagem do efeito local implica na determinação do tempo e nível de vibração e do efeito de amplificação do deslocamento. As propriedades elásticas dos materiais geológicos (velocidade das ondas de compressão e de cisalhamento, densidade, espessura da camada de solo, etc.) podem ser obtidas por diversos métodos geofísicos

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Cabras, Flaminia. "Forests as a natural seismic metabarrier: analysis of interaction between trees and Rayleigh waves." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15200/.

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The present thesis describes a sensitivity analysis over design parameters carried out through finite element simulations on seismic metamaterials, locally resonant structures able to affect the propagation of waves passing through them. Locally resonant metamaterials represent a particular type of resonant scattering, which is very powerful mean for stopping (bandgaps) and redirecting elastic waves at different length scales. This work, carried out at the Imperial College London, is inserted as part of the the METAFORET project, a large-scale wave experiment, which aims to demonstrate the ef

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7

Berge, Léonie. "Contribution à la modélisation des spectres de neutrons prompts de fission .Propagation d'incertitudes sur un calul de fluence cuve." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAI039/document.

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Le spectre des neutrons prompts de fission (PFNS) est une donnée très importante pour diverses applications de la physique nucléaire. Cependant, en dehors du spectre de la fission spontanée du 252Cf, qui est reconnu comme un standard international et est utilisé pour la métrologie, le PFNS reste mal connu pour la plupart des noyaux fissionnants. En particulier, pour la fission rapide (induite par un neutron de plus de 100 keV environ), il existe peu de mesures, et les évaluations internationales présentent de fortes contradictions. De plus, il existe très peu de données sur les covariances ass

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Webber, Matthew (Matthew William). "Mapping exoplanet clouds and albedo from phase curves and spectra." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113795.

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Thesis: Ph. D. in Planetary Science, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 89-91).<br>This thesis uses planetary albedo models to investigate variations in visible wavelength phase curves of exoplanets. We improve upon existing exoplanet giant planet albedo models and incorporate exoplanet general circulation models to analyze the composition and occurrence of clouds on tidally locked exoplanets. We confirm that non-uniform cloud coverage on th

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9

Wei, Lin. "Predicting seat transmissibility from seat impedance and the apparent mass of the human body." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312865.

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10

Fouchal, Farid. "Composite cure assessment using spectral analysis (via an embedded optical fibre sensor)." Thesis, De Montfort University, 2001. http://hdl.handle.net/2086/4302.

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11

Tamarit, Sariol Anna. "Singular phenomena in the length spectrum of analytic convex curves." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/318372.

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Consider the billiard map defined inside an analytic closed strictly convex curve Q. Given q>2 and 0<p<q relatively prime integers, there exist at least two (p,q)-periodic trajectories inside Q. The main goal of this thesis is to study the maximal difference of lengths among (p,q)-periodic trajectories on the billiard, D(p,q). The quantity D(p,q) gives some dynamical and geometrical information. First, it characterizes part of the length spectrum of Q and so it relates to Kac's question, "Can one hear the shape of a drum?''. Second, D(p,q) is an upper bound of Mather's DW(p/q) and so it quant

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Schmitz, Joel R. "Computational and Experimental Investigations Concerning Rare Gas and DPAL Lasers and a Relaxation Kinetics Investigation of the Br₂ + 2NO = 2BrNO Equilibrium." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1495116678312251.

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Durand, Amaury. "Functional time series modeling and application to representation and analysis of multi-site electric load curves for energy management." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAT018.

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L'analyse des courbes de charge électrique recueillies par les compteurs intelligents est une étape importante pour de nombreuses tâches de maîtrise d'énergie telles que le suivi et la prévision de la consommation ou la segmentation de clientèle. Dans ce contexte, les chercheurs d'EDF s'intéressent à extraire des informations des courbes de charge électrique journalières pour comparer les consommations de différents bâtiments. La stratégie suivie par le groupe de recherche accueillant mon doctorat consiste à utiliser des modèles physiques et déterministes basés sur des informations telles que

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Cole-Clarke, Peter. "Spectroscopic studies of the cure of aerospace epoxy resins." Thesis, Queensland University of Technology, 1990. https://eprints.qut.edu.au/35979/1/35979_Cole-Clarke_1990.pdf.

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Epoxy resins diaminodiphenylmethane A.B..S..'.IE.A.C.T based on (TGDDM) tetraglycidyl reacted with 4,4' 4 , 4 ' diaminodiphenylsulphone (DDS) form the matrix for many advanced composite materials. The achievement of optimum properties and performance from a fibrereinforced epoxy resin composite depends on the control of the cure cycle of the material. This thesis critically assesses the physical techniques such as D. C conductivity and A. C phase lag which have been employed to monitor the increase in the resin viscosity during cure, as well as alternative techniques such as

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Sanna, Giangiacomo. "Rational curves and instantons on the Fano threefold Y_5." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/3867.

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This thesis is an investigation of the moduli spaces of instanton bundles on the Fano threefold Y_5 (a linear section of Gr(2,5)). It contains new proofs of classical facts about lines, conics and cubics on Y_5, and about linear sections of Y_5. The main original results are a Grauert-Mülich theorem for the splitting type of instantons on conics, a bound to the splitting type of instantons on lines and an SL_2-equivariant description of the moduli space in charge 2 and 3. Using these results we prove the existence of a unique SL_2-equivariant instanton of minimal charge and we show that

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16

Kasarherou, Joel. "Contribution a l'etude de l'eclatement tourbillonnaire dans une cuve cylindrique par methode spectrale." Paris 6, 1993. http://www.theses.fr/1993PA066394.

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La premiere partie du memoire est consacree a la classification, dans le contexte du phenomene de l'eclatement tourbillonnaire, de la structure en forme de bulbe axisymetrique observee dans une cuve cylindrique. A la lumiere des etudes precedentes, on choisit de se restreindre a l'etude de la stabilite de ce flot par rapport aux perturbations tridimensionnelles. On developpe pour ce faire un algorithme base sur la resolution des equations de navier-stokes instationnaires tridimensionnelles, en coordonnees cylindriques, par methode pseudo-spectrale chebyshev. Le probleme lie a la singularite de

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17

Qu, Yuanyuan. "Color Prediction and Separation Models in Printing : Minimizing the Colorimetric and Spectral Differences employing Multiple Characterization Curves." Doctoral thesis, Linköpings universitet, Medie- och Informationsteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-97569.

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Color prediction models and color separation models are essential for print device characterization and calibration, from which the profiles used in color management systems are built up. Dot gain refers to the phenomenon in printing causing the printed ink dots appear bigger than their reference size in the original bitmap.The characterization of dot gain is necessary and crucial in color prediction models. Most prediction and separation models use a single dot gain characterization curve for each primary ink. In this thesis, the dot gain behavior of each ink is characterized by using multipl

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18

Nys, Manon. "Schrödinger equations with an external magnetic field: Spectral problems and semiclassical states." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/216641.

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In this thesis, we study Schrödinger equations with an external magnetic field. In the first part, we are interested in an eigenvalue problem. We work in an open, bounded and simply connected domain in dimension two. We consider a magnetic potential singular at one point in the domain, and related to the magnetic field being a multiple of a Dirac delta. Those two objects are related to the Bohm-Aharonov effect, in which a charged particle is influenced by the presence of the magnetic potential although it remains in a region where the magnetic field is zero. We consider the Schrödinger magneti

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19

Al-Maghrabi, Mufied Mahmoud. "Thermoluminescence spectra from sulphates, fluorides and garnets doped with rare earth ions." Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366054.

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Luminescence measurements have been applied to three different structures namely, sulphate, fluorides and YAG. In all cases the RE doping suppresses the intrinsic emission and results in intense luminescence characteristic of the RE dopant. Additionally, in double doped samples, or contaminated ones, the TL data show that each dopant defines a glow peak, which is displaced in temperature relative to the others. Examples of this were discussed for CaS04:Ce,Mn; YAG:Nd,Tb,Cr,Mn; BaF2:Ho,Ce and BaF2:Tm,Ce. The data are discussed in terms of an energy transfer model between different parts of exten

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20

Lexen, Ernst R. [Verfasser], and Peter H. [Akademischer Betreuer] Hauschildt. "Parameter sensitivity of synthetic spectra and light curves of Type Ia supernovae / Ernst R. Lexen. Betreuer: Peter H. Hauschildt." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2014. http://d-nb.info/1048626199/34.

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Cárdenas, Ayala Jenny Carolina. "Estimação da estrutura a prazo da curva de rendimentos para Colômbia : aplicação empírica com análise de espectro singular." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/147407.

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A estimação da estrutura da taxa de juros é relevante por duas razões fundamentais: em primeiro lugar é considerado como um indicador antecipado de política, sendo uma das principais ferramentas para os bancos centrais como instrumento de política monetária; em segundo lugar, através da curva de rendimentos é possível fazer valoração de ativos financeiros. A causa da sua relevância, tanto na área macroeconômica e como no campo financeiro, uma ampla literatura dedicada a estimá-la se desenvolveu. Neste sentido, o objetivo deste documento é a previsão da curva de rendimentos da Colômbia através

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22

Meidinger, David. "Integrability in weakly coupled super Yang-Mills theory: form factors, on-shell methods and Q-operators." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19241.

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Diese Arbeit untersucht die N = 4 super-Yang-Mills-Theorie bei schwacher Kopplung, mit dem Ziel eines tieferen Verständnisses von Größen der Theorie als Zustände des integrablen Modells dass der planaren Theorie zu Grunde liegt. Wir leiten On-Shell-Diagramme für Formfaktoren des chiralen Energie-Impuls-Tensor-Multipletts aus der BCFW-Rekursion her, und untersuchen deren Eigenschaften. Dies erlaubt die Herleitung eines Graßmannschen Integrals. Für NMHV-Formfaktoren bestimmen wir die Integrationskontur. Dies erlaubt es das Integral mit einer Twistor-String-Formulierung in Beziehung zu setzen. Mi

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Maccari, Neto Alfredo. "Análise de ocorrência de metamerismo em revestimentos cerâmicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/28929.

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Um dos problemas técnicos que ocorrem nos revestimentos cerâmicos é a possibilidade de duas peças serem da mesma cor sob a luz do dia, mas de cores diferentes sob outra iluminação. Tal fenômeno é chamado metamerismo. O presente trabalho teve como objetivo realizar um estudo sobre a influência de variáveis do processo de fabricação de revestimentos cerâmicos na ocorrência do fenômeno de metamerismo, tendo como objeto de estudo uma peça monoporosa de esmalte branco-brilhante, e um porcelanato mate. Para tanto, avaliou-se o efeito da variação de iluminante, correlacionado com as seguintes caracte

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Chakraborty, Akash. "Effets des inhomogénéités nanométriques sur les propriétés magnétiques de systèmes magnétiques dilués." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00947328.

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Cette thèse est principalement consacrée à l'étude des inhomogénéités de taille nanométrique dans les systèmes magnétiques désordonnés ou dilués. La présence d'inhomogénéités, souvent mise en évidence dans de nombreux matériaux, donne lieu à des propriétés physiques intéressantes et inattendues. La possibilité de ferromagnétisme à l'ambiante dans certains matéraux a généré un grand enthousiasme en vue d'application dans la spintronique. Cependant, d'un point de vue fondamental la physique de ces systèmes reste peu explorée et mal comprise. Dans ce manuscrit, on se propose de fournir une étude

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Kratz, Marie. "Some contributions in probability and statistics of extremes." Habilitation à diriger des recherches, Université Panthéon-Sorbonne - Paris I, 2005. http://tel.archives-ouvertes.fr/tel-00239329.

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Chegoor, Prashant. "Optical response of polycrystalline mercuric iodide photoconductive detectors." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001026.

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STRAZZERI, ELISABETTA. "Energy calibration and ultra-high energy cosmic ray spectrum at the Southern Pierre Auger Observatory." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2008. http://hdl.handle.net/2108/411.

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Viene presentato un metodo empirico per stimare lo spettro dei raggi cosmici con angoli di zenith delle direzioni di arrivo Î¶ < 60Â° e energie E > 3 EeV. Sono stati utilizzati dati rivelati dall' Osservatorio Pierre Auger Sud, da Gennaio 2004 fino alla fine di Agosto 2007. L' Osservatorio Auger è un rivelatore ibrido che osserva le particelle degli sciami atmosferici, tramite 1600 rivelatori di particelle disposti al suolo secondo uno schema geometrico (Rivelatore di Superficie), e la luce di fluorescenza associata, tramite 24 telescopi ottici (Rivelatore di Fluorescenza) che guardano dall'

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Vacus, Pascal. "Mise au point d’une nouvelle méthode optique pour la mesure de concentration locales en phase liquide : application au mélange dans une cuve agitée." Vandoeuvre-les-Nancy, INPL, 1991. http://www.theses.fr/1991INPLA006.

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L’analyse bibliographique a révélé les limites atteintes tant en taille qu’en fréquence par les sondes de concentration conventionnelles, la spectroscopie de fluorescence apparaissant prometteuse. La théorie et l’étude des applications dérivées montrent qu’elle peut apporter la résolution spectrale, spatiale et temporelle indispensable à une mesure locale de concentration, et apporte un éclairage sur les problèmes rencontrés dans l’étude du mélange d’un traceur fluorescent en solution dans l’eau. Les éléments de l’installation expérimentale sont présentés, avec leurs réglages complets. Des bru

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Crawley, George. "Granulométrie des suspensions de particules fines par mesures turbidimétriques spectrales. Application à l'étude de la fragmentation des cristaux dans une cuve agitée." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 1994. http://tel.archives-ouvertes.fr/tel-00843935.

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Les propriétés physiques, chimiques, mécaniques et rhéologiques des matériaux pulvérulents dépendent de manière notable de leur état granulaire. Ceci justifie la multiplicité des techniques granulométriques. Du fait de leur conception et de leur technologie, la plupart de ces techniques requièrent une préparation ou un prélèvement qui peuvent altérer l'état granulaire de l'échantillon. Une sonde granulométrique utilisable <i>in situ</i> présente donc un intérêt majeur, autant pour caractériser et contrôler en continu un procédé que pour obtenir des informations sur un mécanisme. C'est dans ce

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Crawley, George Martin. "Granulométrie des suspensions de particules fines par mesures turbidimétriques spectrales. Application à l'étude de la fragmentation des cristaux dans une cuve agitée." Grenoble INPG, 1994. https://theses.hal.science/tel-00843935.

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Les propriétés physiques, chimiques, mécaniques et rhéologiques des matériaux pulvérulents dépendent de manière notable de leur état granulaire. Ceci justifie la multiplicité des techniques granulométriques. Du fait de leur conception et de leur technologie, la plupart de ces techniques requièrent une préparation ou un prélèvement qui peuvent altérer l'état granulaire de l'échantillon. Une sonde granulométrique utilisable in situ présente donc un intérêt majeur, autant pour caractériser et contrôler en continu un procédé que pour obtenir des informations sur un mécanisme. C'est dans ce but que

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Júnior, Paulo Domingues de Oliveira. "Esquema computacional para avaliação automática de parâmetros de qualidade de equipamentos mamográficos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18152/tde-11012010-104228/.

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Este trabalho tem como objetivo o desenvolvimento de um conjunto de procedimentos de avaliação da qualidade de equipamentos mamográficos a partir do processamento de imagens digitais obtidas com a exposição radiográfica de objetos de testes (phantoms) padronizados. O sistema desenvolvido permite a avaliação de diversos parâmetros físicos de qualidade da imagem radiográfica com simplicidade e rapidez, sem abrir mão da precisão, com o mínimo tempo e uso dos equipamentos. Os principais parâmetros avaliados relacionados à qualidade de um sistema de imagem são: a resolução espacial - pela medida da

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Luu, Hoang Duc, Joseph Páez Chávez, Doan Thai Son, and Stefan Siegmund. "Finite-time Lyapunov exponents and metabolic control coefficients for threshold detection of stimulus–response curves." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-215920.

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In biochemical networks transient dynamics plays a fundamental role, since the activation of signalling pathways is determined by thresholds encountered during the transition from an initial state (e.g. an initial concentration of a certain protein) to a steady-state. These thresholds can be defined in terms of the inflection points of the stimulus-response curves associated to the activation processes in the biochemical network. In the present work, we present a rigorous discussion as to the suitability of finite-time Lyapunov exponents and metabolic control coefficients for the detection of

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Tran, Anh-Dung. "Application de l'apprentissage automatique pour la construction des courbes de fragilité sismique." Electronic Thesis or Diss., université Paris-Saclay, 2024. https://www.biblio.univ-evry.fr/theses/2024/interne/2024UPAST017.pdf.

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L'évaluation des risques sismiques pour les structures est nécessaire pour prévenir les pertes humaines et matérielles en cas de catastrophes naturelles. La construction des courbes de fragilité sismique, l'outil qui définit la probabilité de défaillance d'une structure en fonction de l'intensité des séismes, joue un rôle important dans cette évaluation. En général, la méthode de construction de cette courbe demande des procédures coûteuses, très souvent par appel des analyses par éléments finis, nécessitant des ressources considérables en termes de temps et d'informatique. Cette difficulté em

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Hanni, M. (Matti). "Static and dynamic NMR properties of gas-phase xenon." Doctoral thesis, University of Oulu, 2011. http://urn.fi/urn:isbn:9789514294570.

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Abstract This thesis presents computational studies of both the static and dynamic parameters of the nuclear magnetic resonance (NMR) spectroscopy of gaseous xenon. First, state-of-the-art static magnetic resonance parameters are computed in small xenon clusters by using methods of quantum chemistry, and second, time-dependent relaxation phenomena are investigated via molecular dynamics simulations at different experimental conditions. Based on the underlying quantum and classical mechanics concepts, computational methods represent a procedure complementary to experiments for investigating the

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Zhou, Ruiping. "Structural And Electronic Properties of Two-Dimensional Silicene, Graphene, and Related Structures." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1341867892.

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Dresti, Simone [Verfasser], Laura [Akademischer Betreuer] Covi, Laura [Gutachter] Covi, and Dorothea [Gutachter] Bahns. "Radiative Corrections in Curved Spacetime and Physical Implications to the Power Spectrum and Trispectrum for different Inflationary Models / Simone Dresti ; Gutachter: Laura Covi, Dorothea Bahns ; Betreuer: Laura Covi." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/116194219X/34.

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André, Christophe. "Développement d'une méthode de mesure de fluctuations de concentration par spectroscopie de fluorescence à hautes résolutions spatiale et temporelle." Vandoeuvre-les-Nancy, INPL, 1991. http://www.theses.fr/1991INPL079N.

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Nous avons développé une méthode de mesure de fluctuations de concentration d'un traceur fluorescent non réactif dans un réacteur agitée continu d'un volume de 1125 dm3 en régime turbulent. Cette méthode repose sur la mesure d'intensité de fluorescence réémise par un traceur fluorescent suite à son excitation par un faisceau laser. Ce travail nous a permis d'étudier l'influence des conditions hydrodynamiques (vitesse d'agitation, temps de passage, viscosité, alimentations) sur le spectre de ségrégation Sc et sur la variance réduite assimilable à une intensité de ségrégation. Une exploration sp

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Ramme, Fernando Luiz Prochnow. "Perfis temporais NDVI e sua relação com diferentes tipos de ciclos vegetativos da cultura da cana-de-açucar." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256990.

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Orientadores: Rubens Augusto Camargo Lamparelli, Jansle Vieira Rocha<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-12T21:23:17Z (GMT). No. of bitstreams: 1 Ramme_FernandoLuizProchnow_D.pdf: 9393591 bytes, checksum: a6d5183861f5be0ab0ed23ba7a8838da (MD5) Previous issue date: 2008<br>Resumo: O objetivo do trabalho foi avaliar a relação entre as fases do crescimento da cana-de-açúcar com as formas de curvas do perfil temporal do Índice de Vegetação por Diferença Normalizada - NDVI, obtidas a partir do sensor remo

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Ghantous, Joyce. "Prise en compte de conditions aux bords d'ordre élevé et analyse numérique de problèmes de diffusion sur maillages courbes à l'aide d'éléments finis d'ordre élevé." Electronic Thesis or Diss., Pau, 2024. http://www.theses.fr/2024PAUU3024.

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Cette thèse porte sur l'analyse numérique d'équations aux dérivées partielles impliquant des conditions de bord d'ordre élevé de type Ventcel en utilisant la méthode des éléments finis. Afin de définir l'opérateur de Laplace-Beltrami intervenant dans la condition au bord, le domaine est supposé lisse : ainsi le domaine maillé ne correspond pas au domaine physique initial, entrainant une erreur géométrique. Nous utilisons alors des maillages courbes afin de réduire cette erreur et définissons un opérateur de lift permettant de comparer la solution exacte définie sur le domaine initial et la sol

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Yandt, Mark. "Characterization Techniques and Optimization Principles for Multi-Junction Solar Cells and Maximum Long Term Performance of CPV Systems." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/35870.

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Two related bodies of work are presented, both of which aim to further the rapid development of next generation concentrating photovoltaic systems using high efficiency multi junction solar cells. They are complementary since the characterization of commercial devices and the systematic application of design principles for future designs must progress in parallel in order to accelerate iterative improvements. First addressed, is the field characterization of state of the art concentrating photovoltaic systems. Performance modeling and root cause analysis of deviations from the modeling resul

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Baniahmad, Ata. "QUANTUM MECHANICAL Study and Modelling of MOLECULAR ELECTRONIC DEVICES." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13193/.

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Molecular electronics pursues the use of molecules as fundamental electronic components. The inherent properties of molecules such as nano-size, low cost, scalability, and self-assembly are seen by many as a perfect complement to conventional silicon electronics. Molecule based electronics has captured the attention of a broad cross section of the scientiﬁc community. In molecular electronic devices, the possibility of having channels that are just one atomic layer thick, is perhaps the most attractive feature that takes the attention to graphene.The conductivity, stability, uniformity, compo

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42

Champion, Patrick D. "An analysis of Fourier transform infrared spectroscopy data to predict herpes simplex virus 1 infection." Atlanta, Ga. : Georgia State University, 2008. http://digitalarchive.gsu.edu/math_theses/62/.

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Thesis (M.S.)--Georgia State University, 2008.<br>Title from title page (Digital Archive@GSU, viewed July 29, 2010) Yu-Sheng Hsu, committee chair; Gary Hastings, Jun Han, committee members. Includes bibliographical references (p. 41).

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Kupková, Karolína. "Model dynamických kontrastních CT dat pro hodnocení lícovacích algoritmů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220034.

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This work is focused on the description of the dynamic contrast-enhanced CT examination and its contribution in the pneumooncology. It includes a program for creating a two-dimensional model of the scan from the thorax and for the perfuse examination simulation using the time-density curve. Real CT data are simulated more authentic using rigid geometric transformations and noise. The model will be used for the validation of registration algorithms that is used to suppress the spatial deformation generated by patient motions during the long time examination.

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44

Boër, Michel. "Contribution a l'etude des sursauts gamma cosmiques : recherche de contreparties permanentes x et optiques, resultats de l'experience signe 2 mp 9." Toulouse 3, 1988. http://www.theses.fr/1988TOU30107.

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Des observations optiques et rx portant sur les phenomenes transitoires r::(gamma ) dont la duree de vie va de quelques dizaines de millisecondes a quelques minutes aboutissent a d'importantes contraintes sur les modeles theoriques de sources r::(gamma ) de sursauts. D'autre part la detection gamma d'un nombre important de sursaut r::(gamma ) par le satellite prognoz 9 a ete realisee en 1983-84. Les courbes de lumieres et les spectres en sont presentes. Une nouvelle classe de sursauts repetitifs a ete mise en evidence et un modele propose

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45

Shaw-Taberlet, Jennifer. "DISPOSITIFS MOLECULAIRES FONCTIONNELS A BASE ORGANOMETALLIQUE." Phd thesis, Université Rennes 1, 2006. http://tel.archives-ouvertes.fr/tel-00116762.

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Chapter 1.<br />1-Ethynyl-2-phenyltetramethyldisilanes HCºCSiMe2SiMe2C6H4-p-X [X = NMe2(1.1), Me (1.2), H (1.3), Br (1.4), CF3 (1.5)] are accessible from ClSiMe2SiMe2Cl, BrMgC6H4X and HCºCMgBr in a two step Grignard reaction. The crystal structure of 1.1 as determined by single crystal X-ray crystallography exhibits a nearly planar PhNMe2 moiety and an unusual gauche array of the phenyl and the acetylene group with respect to rotation around the Si-Si-bond. Full geometry optimization (B3LYP/6- 31+G**) of the gas phase structures of 1.1 and 1.3 affords minima for the gauche and the trans rotati

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46

Ruchert, Cassius Olivio Figueiredo Terra. "Correlação de estrias de fadiga com espectro de cargas em liga de Al aeronáutica SAE-AMS 7475 T 7351." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-10092008-095023/.

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Este trabalho discutiu a relação entre o espaçamento inter-estrias , isto é, a taxa de propagação da trinca microscópica SL (local) e SP (projetada) e a taxa de propagação macroscópica , da/dN, obtido após o ensaio de propagação de trinca por fadiga. Corpos de prova compacto C(T) foram extraídos na orientação LT do centro de uma placa laminada de liga de alumínio SAE-AMS 7475 T7351 onde posteriormente foram realizados ensaios de fadiga sob carga ou &#916K constantes, à temperatura ambiente de acordo com a Norma ASTM-E647 (1993). Para o ensaio sob carga constante foram obtidos os dados do estág

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Widjaja, Matius Andy. "The Influence of the Recommended LRFD Guidelines for the Seismic Design of Highway Bridges on Virginia Bridges." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31453.

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The influence of the recommended LRFD Guidelines for the seismic design of highway bridges in Virginia was investigated by analyzing two existing bridges. The first bridge has prestressed concrete girders and is located in the Richmond area. The second bridge has steel girders and is located in the Bristol area. The analysis procedure for both bridges is similar. First the material and section properties were calculated. Then the bridge was modeled in RISA 3D. Live and dead load were imposed on the bridge to calculate the cracked section properties of the bridge. The period of vibration of the

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48

PAIVA, FABIO de. "Estudo das respostas de TLD tipo LiF para caracterização de campos mistos." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26930.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-12-21T15:11:54Z No. of bitstreams: 0<br>Made available in DSpace on 2016-12-21T15:11:54Z (GMT). No. of bitstreams: 0<br>A Terapia por Captura de Nêutrons, NCT (Neutron Capture Therapy) é uma técnica radioterápica em que a energia útil do tratamento vem da energia liberada em uma reação nuclear e não do feixe primário, como comumente utilizado em outros procedimentos radioterápicos. O Boro, por constituir-se em um elemento de baixa toxicidade e por apresentar um isótopo (10B) com alta seção de choque para a reação 10B(n,&a

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49

Wiberg, Kent. "Multivariate spectroscopic methods for the analysis of solutions." Doctoral thesis, Stockholm : Institutionen för analytisk kemi, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-110.

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50

Gharbi, Tasnim. "Bicouches Cuivre/oxyde : propriétés optiques, géométriques et structurales, énergie d’activation et SPR." Electronic Thesis or Diss., Troyes, 2022. http://www.theses.fr/2022TROY0009.

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L'objectif de cette thèse est de déterminer conjointementles épaisseurs et la permittivité relative de bicouches de Cuivre et d’oxyde à partir de mesures d’absorbance. Les hypothèses sur le type d’oxyde et les modèles d’inclusion d’air sont comparées, mises en œuvre et exploitées. Les meilleurs modèles en terme de qualité d’ajustement aux données expérimentales sont reliés à la structure des matériaux. Ce problème inverse est résolu en utilisant des métaheuristiques : PSO (Particle Swarm Optimization), ABC (Artificial Bee Colony) et EM (EvolutionaryMethod) qui sont comparées. Ces méthodes sont

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