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Dissertations / Theses on the topic 'Perturbation matrix'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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1

Chang, Xiao-Wen. "Perturbation analysis of some matrix factorizations." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0023/NQ29906.pdf.

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2

Dianzinga, Mamy Rivo. "N-representable density matrix perturbation theory." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0285/document.

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Alors que les approches standards de résolution de la structure électronique présentent un coût de calcul à la puissance 3 par rapport à la complexité du problème, des solutions permettant d’atteindre un régime asymptotique linéaire,O(N), sont maintenant bien connues pour le calcul de l'état fondamental. Ces solutions sont basées sur la "myopie" de la matrice densité et le développement d'un cadre théorique permettant de contourner le problème aux valeurs propres. La théorie des purifications de la matrice densité constitue une branche de ce cadre théorique. Comme pour les approches de type O(
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3

Ma, Yanyuan 1970. "Studies in matrix perturbation and robust statistics." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85305.

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4

Tidefelt, Henrik. "Differential-algebraic equations and matrix-valued singular perturbation." Doctoral thesis, Linköpings universitet, Reglerteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51653.

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With the arrival of modern component-based modeling tools for dynamic systems, the differential-algebraic equation form is increasing in popularity as it is general enough to handle the resulting models. However, if uncertainty is allowed in the equations — no matter how small — this thesis stresses that such equations generally become ill-posed. Rather than deeming the general differential-algebraic structure useless up front due to this reason, the suggested approach to the problem is to ask what assumptions that can be made in order to obtain well-posedness. Here, “well-posedness” is used i
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5

Li, Yuemeng. "Spectral Analysis of Directed Graphs using Matrix Perturbation Theory." Thesis, The University of North Carolina at Charlotte, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10618933.

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<p> The spectral space of the adjacency matrix contains important structural information of a given network (graph), where such information can be leveraged in developing a variety of algorithms in applications such as graph partition, structural hierarchy discovery, and anomaly detection. Although many prominent works have laid the foundation for studying the graph spectra, it is still challenging to analyze the spectral space properties for directed graphs due to possible complex valued decompositions. Matrix factorization techniques such as Laplacian and normalized Laplacian have been widel
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6

Krause, Andreas. "Baryon matrix elements of the vector current in chiral perturbation theory /." Bern, 1991. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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7

Masango, Senamile Khethekile Ntombizothando. "Measuring transitional matrix elements using first-order perturbation theory in Coulomb excitation." University of the Western Cape, 2019. http://hdl.handle.net/11394/6704.

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Magister Scientiae - MSc<br>The aim of nuclear structure physics is to study the interplay between singleparticle and collective degrees of freedom in nuclei and to explain how nuclei get excited and decay under di erent external conditions, such as strong electric and magnetic elds. If nuclei absorb a large amount of energy and angular momentum, like in a scattering reaction when you bombard a target that is in the ground state with a projectile at high bombarding energies, the energy from the projectile gets transfered to the target and vice versa, hence both projectile and target ma
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Gernandt, Hannes [Verfasser], Michał [Akademischer Betreuer] Wojtylak, and Carsten [Gutachter] Trunk. "Spectral Perturbation & Optimization of Matrix Pencils / Hannes Gernandt ; Gutachter: Carsten Trunk ; Betreuer: Michał Wojtylak." Ilmenau : Universitätsverlag, 2021. http://d-nb.info/1241963509/34.

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9

Müller, Eike Hermann. "Heavy-to-light decays on the lattice." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4144.

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Precise predictions of hadronic matrix elements in heavy meson decays are important to constrain the fundamental parameters in the Standard Model of particle physics. The CKM matrix element Vub can be extracted from experimental data on the decay B → πℓν if the hadronic form factor is known. In addition, loop suppressed rare decays of B-mesons, such as B → K∗γ and B → K(∗)ℓℓ, provide valuable insight into new physics models. Hadronic form factors for exclusive meson decays can be calculated in the framework of lattice QCD. As the wavelength of heavy quarks is not resolved on currently availabl
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10

Starkloff, Hans-Jörg, and Ralf Wunderlich. "Stationary solutions of linear ODEs with a randomly perturbed system matrix and additive noise." Universitätsbibliothek Chemnitz, 2005. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200501335.

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The paper considers systems of linear first-order ODEs with a randomly perturbed system matrix and stationary additive noise. For the description of the long-term behavior of such systems it is necessary to study their stationary solutions. We deal with conditions for the existence of stationary solutions as well as with their representations and the computation of their moment functions. Assuming small perturbations of the system matrix we apply perturbation techniques to find series representations of the stationary solutions and give asymptotic expansions for their first- and second-order
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11

FAROOQ, ASMA. "Relative conditioning of linear systems of ODEs with respect to perturbation in the matrix of the system and in the initial value." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3031098.

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The thesis is about how perturbations in the initial value $y_{0}$ or in the coefficient matrix $A$ propagate along the solutions of $n$-dimensional linear ordinary differential equations (ODE) \begin{equation*} \left\{ \begin{array}{l} y^\prime(t) =Ay(t),\ t\geq 0,\\ y(0)=y_0, \end{array} \right. \end{equation*} where $A \in \mathbb{R}^{n\times n} $ and $y_0\in \mathbb{R}^n$ and $y(t)=e^{tA}y_0$ is the solution of the equation.\\ We begin by considering a perturbation analysis when the initial value $y_0$ is perturbed to $\tilde{y}_0$ with relative error \[ \varepsilon=\frac{\norm{\tilde{y}
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12

Arslan, Bahar. "Functions of structured matrices." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/functions-of-structured-matrices(75511801-f8b8-4ac3-9434-35f88b1d0bb0).html.

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The growing interest in computing structured matrix functions stems from the fact that preserving and exploiting the structure of matrices can help us gain physically meaningful solutions with less computational cost and memory requirement. The work presented here is divided into two parts. The first part deals with the computation of functions of structured matrices. The second part is concerned with the structured error analysis in the computation of matrix functions. We present algorithms applying the inverse scaling and squaring method and using the Schur-like form of the symplectic matric
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13

Johansson, Pedher. "Software tools for matrix canonical computations and web-based software library environments." Doctoral thesis, Umeå : Dept. of Computing Science, Umeå University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-890.

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14

Schönherr, Marek. "Improving predictions for collider observables by consistently combining fixed order calculations with resummed results in perturbation theory." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-83876.

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With the constantly increasing precision of experimental data acquired at the current collider experiments Tevatron and LHC the theoretical uncertainty on the prediction of multiparticle final states has to decrease accordingly in order to have meaningful tests of the underlying theories such as the Standard Model. A pure leading order calculation, defined in the perturbative expansion of said theory in the interaction constant, represents the classical limit to such a quantum field theory and was already found to be insufficient at past collider experiments, e.g. LEP or Hera. Such a leading o
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15

Mendez, Barrios César. "Low-Order Controllers for Time-Delay Systems : an Analytical Approach." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00719477.

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The research work presented in this thesis concern to the stability analysis of linear time-delay systems with low-order controllers. This thesis is divided into three parts.The first part of the thesis focus on the study of linear SISO (single-input/single-output) systems with input/output delays, where the feedback loop is closed with a controller of PID-type. Inspired by the geometrical approach developed by Gu et al. we propose an analytical method to find the stability regions of all stabilizing controllers of PID-type for the time-delay system. Based on this same approach, we propose an
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16

Kurudamannil, Jubal J. "Improved Robust Stability Bounds for Sampled Data Systems with Time Delayed Feedback Control." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1419012522.

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17

Corradini, Andrea. "Ecological connectivity in the Alpine anthropic matrix. Natural reserves and corridors for the conservation of brown bear in the Alps (ABC - AlpBearConnect)." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/321014.

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Large carnivores are among the most challenging species to conserve in our modern and crowded world. Having large spatial requirements and living in low density, they generally require wide and relatively undisturbed areas. In Europe, one of the most anthropized areas of the planet, these needs must be fulfilled in a complex human-dominated landscape. The reintroduced brown bear population living in the Central Alps represents one of the most emblematic examples of a constrained carnivore: despite a steady population increase in the first few years after reintroduction, the population did not
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18

Koniaris, Christos. "Perceptually motivated speech recognition and mispronunciation detection." Doctoral thesis, KTH, Tal-kommunikation, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102321.

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This doctoral thesis is the result of a research effort performed in two fields of speech technology, i.e., speech recognition and mispronunciation detection. Although the two areas are clearly distinguishable, the proposed approaches share a common hypothesis based on psychoacoustic processing of speech signals. The conjecture implies that the human auditory periphery provides a relatively good separation of different sound classes. Hence, it is possible to use recent findings from psychoacoustic perception together with mathematical and computational tools to model the auditory sensitivities
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19

Stott, Iain Michael. "Modelling transient population dynamics and their role in ecology and evolution." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3733.

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Population projection matrix (PPM) models are a central tool in ecology and evolution. They are widely used for devising population management practises for conservation, pest control, and harvesting. They are frequently employed in comparative analyses that seek to explain demographic patterns in natural populations. They are also a key tool in calculating measures of fitness for evolutionary studies. Yet, demographic analyses using projection matrices have, in some ways, failed to keep up with prevailing ecological paradigms. A common focus on long-term and equilibrium dynamics when analysin
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20

Friberg, Adam. "Matrix Integrals : Calculating Matrix Integrals Using Feynman Diagrams." Thesis, Uppsala universitet, Teoretisk fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227928.

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In this project, we examine how integration over matrices is performed. We investigate and develop a method for calculating matrix integrals over the set of real square matrices. Matrix integrals are used for calculations in several different areas of physics and mathematics; for example quantum field theory, string theory, quantum chromodynamics, and random matrix theory. Our method consists of ways to apply perturbative Taylor expansions to the matrix integrals, reducing each term of the resulting Taylor series to a combinatorial problem using Wick's theorem, and representing the terms of th
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21

Shcheredin, Stanislav. "Simulations of lattice fermions with chiral symmetry in quantum chromodynamics." Doctoral thesis, [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97410907X.

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22

Dalley, Simon. "Matrix models and non-perturbative two-dimensional quantum gravity." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357132.

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23

Checinski, Tomasz [Verfasser]. "Integrability in Random Two-Matrix Models under Finite-Rank Perturbations / Tomasz Checinski." Bielefeld : Universitätsbibliothek Bielefeld, 2019. http://d-nb.info/1189813130/34.

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24

Evangelisti, Stefano. "Developpement de methodes d'interaction de configurations et d'hamiltoniens effectifs dans le cadre du probleme a n-corps." Toulouse 3, 1988. http://www.theses.fr/1988TOU30034.

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I. Proposition d'une amelioration de la methode cipsi, qui combine l'approche variationnelle (pour les termes qui contribuent fortement a la solution exacte) et l'approximation perturbative (pour les termes de moindre importance), en introduisant une classe intermediaire. Reexamen de la solution du probleme variationnel pour les matrices de grande dimension; amelioration de la methode classique de davidson. Ii. Comparaison de l'efficacite de differentes variantes d'hamiltoniens effectifs; generalisation du concept sous forme d'hamiltonien effectif intermediaire, examen de sa pertinence et de s
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25

Grammont, Laurence. "Analyse numérique des équations de Sylvester généralisées." Saint-Etienne, 1994. http://www.theses.fr/1994STET4011.

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Cette thèse contient une étude de l'analyse numérique des équations de Sylvester généralisées. Nous avons abordé les questions d'existence, d'unicité et d'expressions explicites de la solution de l'équation de Sylvester généralisée dans le contexte de la théorie spectrale. Nous avons ainsi construit une expression explicite de la solution et donné une hypothèse d'existence en termes d'éléments spectraux des matrices A et B qui définissent l'opérateur de Sylvester. Nous avons étudié la sensibilité de la solution de l'équation de Sylvester dans le cadre de la théorie des perturbations linéaires
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26

Dendievel, Sarah. "Skip-free markov processes: analysis of regular perturbations." Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209050.

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A Markov process is defined by its transition matrix. A skip-free Markov process is a stochastic system defined by a level that can only change by one unit either upwards or downwards. A regular perturbation is defined as a modification of one or more parameters that is small enough not to change qualitatively the model.<p>This thesis focuses on a category of methods, called matrix analytic methods, that has gained much interest because of good computational properties for the analysis of a large family of stochastic processes. Those methods are used in this work in order i) to analyze the eff
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27

BOUZIGES, STEINER FRANCOISE. "Role de la matrice extracellulaire dans la differenciation intestinale. Perturbations dans les cancers coliques." Université Louis Pasteur (Strasbourg) (1971-2008), 1991. http://www.theses.fr/1991STR13040.

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Le developpement et la differenciation de l'intestin dependent d'interactions epithelio-mesenchymateuses. Le role possible de certaines molecules de la matrice extracellulaire dans ces processus a ete analyse. Les resultats suivants semblent etayer une telle hypothese: 1) des modifications quantitatives et qualitatives des glycosaminoglycannes (gags) neosynthetises ont pu etre mises en evidence en fonction du stade de developpement intestinal. De plus, certaines variations moleculaires paralleles a la differenciation intestinale sont induites par les glucocorticoides au niveau du compartiment
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28

Giacomet, Andréa Fátima. "Análise não perturbativa das propriedades da matéria de nêutrons /." Florianópolis, SC, 1997. http://repositorio.ufsc.br/xmlui/handle/123456789/77320.

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Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.<br>Made available in DSpace on 2012-10-17T02:58:30Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T21:32:03Z : No. of bitstreams: 1 152554.pdf: 2069354 bytes, checksum: 2737bf510df2e63e94536462aa0bca70 (MD5)<br>Neste trabalho são calculadas a auto-energia e a densidade de energia para a matéria de nêutrons com o auxílio da expansão d otimizada, uma aproximação não perturbativa que combina técnicas de teoria de perturbação e o princípio variacional. Foi utilizado para descrever a
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29

Metelkina, Asya. "Perturbations à oscillations lentes de l'opérateur de Schrödinger périodique." Phd thesis, Université Paris-Nord - Paris XIII, 2011. http://tel.archives-ouvertes.fr/tel-00714033.

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On étudie l'opérateur de Schrödinger Ha + V(x) + W(x dans L où V est un potentiel périodique générique. On suppose que w est périodique et a (O, 1) de sorte que la perturbation W(x soit à oscillations asymptotiquement lentes. On étudie l'asymptotique des solutions de l'équation propre associée par deux approches différentes. La première approche, qui est basée sur une méthode de Sirnon---Zhu, utilise des approximations périodiques. On obtient une formule explicite pour la densité d'états intégrée pour Ha. Puis, on prouve l'existence et on donne une formule pour l'exposant de Lyapounov pour pre
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30

Mohazab, Ali Reza. "Perturbative study of concentric 5-branes in plane-wave matrix model and development of mathematical formalism for wigner j-symbols." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32059.

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Expansion and computation of quantities around various (k x N) x (k x N) vacuua in BMN theory results in introduction of Matrix spherical harmonics and various traces of their products. In this thesis the formalism to deal with these harmonics is developed and a few bosonic diagrams that arise in computation of Tr(XªXª) are computed as an example. It is then seen that the large N limit is dominated by a planar subclass of these diagrams with a particular topology. This suggests a stronger constraint than that of 't Hooft.<br>Science, Faculty of<br>Physics and Astronomy, Department of<br
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31

Niculescu, Silviu-Iulian. "Sur la stabilité et la stabilisation des systèmes linéaires à états retardés." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0034.

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Dans ce memoire on considere le probleme de la stabilite et de la stabilisation d'une classe de systemes lineaires decrits par des equations differentielles a etats retardes a un ou plusieurs retards, constants ou variants dans le temps, commensurables ou non. Nous donnons des conditions necessaires et suffisantes (ou seulement suffisantes) pour garantir la stabilite asymptotique ou la stabilisation soit independamment, soit en fonction de la taille du retard. Ceci constitue la contribution principale de ce travail. Dans la premiere partie, on etudie le probleme de stabilite suivant deux appro
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32

Brunnet, Leonardo Gregory. "Expansão perturbativa em torno do limite atômico para sistemas Kondo e de valência intermediária." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/29431.

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Neste trabalho estudamos as propriedades eletrônicas de sistemas compostos de certos elementos de terras raras. Estes sistemas apresentam propriedades físicas anômalas em decorrência da interação entre os elétrons 4f e os elétrons de condução . Eles são conhecidos como sistemas de valência intermediária, sistemas Kondo, ou, quando a baixas temperaturas apresentam massas efetivas eletrônicas muito grandes, como sistemas de férmions pesados. O hamiltoniano modelo para a descrição teórica desses sistemas é o ilamiltoniano Periódico de Anderson. Nossa abordagem ao problema é de tratar perturbativa
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33

MORETTI, CHIARA. "Estensione di metodi approssimati per la generazione di cataloghi di aloni di materia oscura a teorie di gravità modificata." Doctoral thesis, Università degli Studi di Trieste, 2020. http://hdl.handle.net/11368/2960313.

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The standard cosmological model requires an additional Dark Energy component to account for the accelerated expansion of the Universe, whose nature is still unknown. Its simplest interpretation is that of a cosmological constant, that requires however an unexplained fine-tuning. Alternative theories based on Modified Gravity (MG) have been proposed to avoid the introduction of a cosmological constant, though signatures of MG on cosmological observables are not detected in current data. My PhD was focused on extending approximate methods to generate dark matter distributions in the context of M
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34

Batzke, Leonhard Jan Martin [Verfasser], Christian [Akademischer Betreuer] Mehl, Volker [Akademischer Betreuer] Mehrmann, and Vergara Fernando de [Akademischer Betreuer] Teran. "Generic low rank perturbations of structured regular matrix pencils and structured matrices / Leonhard Jan Martin Batzke. Betreuer: Christian Mehl ; Volker Mehrmann. Gutachter: Christian Mehl ; Volker Mehrmann ; Fernando de Teran Vergara." Berlin : Technische Universität Berlin, 2015. http://d-nb.info/1078065071/34.

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35

Alikhani, Mohammad Esmaïl. "Etude par spectroscopie de diffusion raman du piegeage de trois especes isotopiques de dihydrogene en matrice de gaz rares et d'azote : interpretation theorique des perturbations spectrales observees dans les gaz rares." Paris 6, 1988. http://www.theses.fr/1988PA066015.

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Comparaison des positions des raies des especes monomeres (h::(2),hd::(1),d::(2)) piegees dans des gaz rares (ar,kr,xe) aux valeurs calculees selon plusieurs modeles plus ou moins elabores. Bon accord pour h::(2) et d::(2); necessite d'un terme de couplage rotation-translation pour expliquer le deplacement vers les hautes frequences de la raie s::(0)(0) de hd. Interpretation des spectres d'agregats, observes apres recuits, par un modele d'oscillateurs couples : bon accord avec l'experience pour un taux ortho/para variable de h::(2) et d::(2) pour un agregat contenant au moins cinq molecules
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QUINTELA, RODRIGUEZ FRANK ERNESTO. "Approccio perturbativo alla simulazione della spettroscopia coerente multidimensionale: effetti dell'interazione tra gradi di libertà elettronici e vibrazionali." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2023. https://hdl.handle.net/11380/1296689.

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Negli ultimi decenni, la spettroscopia coerente multidimensionale è stata ampiamente utilizzata per migliorare la nostra comprensione dei processi ultraveloci nel regime di femtosecondi. Distribuendo la complicata risposta ottica di un sistema quantistico in uno spettro multidimensionale, permette la comprensione di complicati processi, derivanti dall'interazione di dinamiche coerenti e incoerenti. Lo spettro multidimensionale di un tipico campione sperimentale è solitamente congestionato e difficile da analizzare, come risultato dell’integrazione di molti fenomeni fisici. Vengono quindi impi
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37

Macarone, Palmieri Adriano. "Quantum biology. Simulazioni di trasferimento di energia in una struttura dimerica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7771/.

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La quantum biology (QB) è un campo di ricerca emergente che cerca di affronta- re fenomeni quantistici non triviali all’interno dei contesti biologici dotandosi di dati sperimentali di esplorazioni teoriche e tecniche numeriche. I sistemi biologici sono per definizione sistemi aperti, caldi,umidi e rumorosi, e queste condizioni sono per loro imprenscindibili; si pensa sia un sistema soggetto ad una veloce decoerenza che sopprime ogni dinamica quantistica controllata. La QB, tramite i principi di noise assisted transport e di antenna fononica sostiene che la presenza di un adeguato livello di
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Defosseux, Manon. "Matrices aléatoires, processus entrelacés et représentations de groupes." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2008. http://tel.archives-ouvertes.fr/tel-00347988.

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Nous démontrons une version d'un théorème d'Heckman permettant de préciser le lien qui unit la théorie des représentations des groupes compacts à celle des matrices aléatoires à valeurs dans l'algèbre de Lie du groupe compact connexe K et dont la loi est K-invariante.<br />Les groupes de Lie classiques, qu'on note K(n), sont les ensembles de matrices unitaires de taille n*n à entrées dans le corps des réels, des complexes ou des quaternions. Pour chacun d'eux, nous étudions plus précisément deux types d'ensembles invariants. Le premier est l'ensemble k(n) - algèbre de Lie de K(n) - muni de la
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Alikhani, Mohammad Esmaïl. "Etude par spectroscopie de diffusion Raman du piègeage de trois espèces isotopiques de dihydrogène en matrice de gaz rares et d'azote interprétation théorique des perturbations spectrales observées dans les gaz rares /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376112022.

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40

Braconnier, Thierry. "Sur le calcul des valeurs propres en précision finie." Nancy 1, 1994. http://www.theses.fr/1994NAN10023.

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Nous avons développé un code de calcul de valeurs propres pour matrices non symétriques de grande taille utilisant la méthode d'Arnoldi-Tchebycheff. Une étude a été menée pour mettre en évidence le rôle du défaut de normalité sur l'instabilité spectrale et la stabilité numérique d'algorithmes de calcul de valeurs propres. Des outils, tels que les méthodes de perturbations associées à des méthodes statistiques, ont été expérimentés afin d'apporter des informations qualitatives sur le spectre étudié. Ces outils permettent de comprendre le comportement numérique du problème traite en précision fi
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41

Fogerty, Frances Jean. "Antibody perturbation of fibronectin matrix assembly." 1990. http://catalog.hathitrust.org/api/volumes/oclc/23244769.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1990.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 255-266).
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Chang, Chu-Yao, and 章竹堯. "A Study on Perturbation of Multiple Eigenvalues for Matrix Polynomials." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/27992064058553399257.

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碩士<br>國立高雄大學<br>應用數學系碩士班<br>98<br>Let L(λ) be a monic m×m matrix polynomial with Jordan structure and λ₀ an eigenvalue of L(λ) whose largest Jordan block has size α. We showing that the splitting of λ₀ under a small perturbation of L(λ) of order ɛ is ,generically, of order ɛ^{1/α}.
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Huang, Chien-Chia, and 黃建嘉. "VIF-based Iterative Matrix Perturbation Method for Linear Models Having Collinearity Problems." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/82087871716756616864.

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博士<br>國立交通大學<br>運輸與物流管理學系<br>103<br>Regression modeling has been one of the most useful and important tools for statistical research. Of all the clans in regression modeling, \emph{linear regression} refers to building a linear relationship between a set of \emph{explanatory} variables and a \emph{response} variable, enabling the researchers to examine how those explantory interact with each other and affect the responses. For instance, in econometrics, by having all other factors fixed, one can perform the \emph{ceteris peribus} analysis to examine how a unit change in a given factor affects
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44

"On safe tractable approximations of chance-constrained linear matrix inequalities with partly dependent perturbations." 2011. http://library.cuhk.edu.hk/record=b5894803.

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Cheung, Sin Shuen.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2011.<br>Includes bibliographical references (leaves 55-59).<br>Abstracts in English and Chinese.<br>Abstract --- p.i<br>Acknowledgement --- p.iii<br>Chapter 1 --- Introduction --- p.1<br>Chapter 2 --- Preliminaries --- p.5<br>Chapter 2.1 --- Heuristics by Hoeffding and Janson --- p.5<br>Chapter 2.2 --- Facts in Matrix Theory --- p.10<br>Chapter 2.3 --- Facts in Probability --- p.11<br>Chapter 3 --- General Chance-Constrained LMIs --- p.18<br>Chapter 3.1 --- Probability Inequalities --- p.18<br>Chapter 3.2 --- Sa
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Hsieh, Yu Lun, and 謝育倫. "(1)Perturbation of Human Endothelial Cells by Plasminogen Activation:Reactiwity of Their Extracellar Matrix towards Plauelet (2)Effects of Snake Venom Protein Disintegrin GST-Rho on Platelet Functions." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/97604415310754529363.

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碩士<br>國立成功大學<br>生理學研究所<br>85<br>Abstract I Endothelial cells (ECs) form a monolayer and lining the inner surface of all blood vessels. Some of their major functions include anti-thrombosis,homeostasis, and fibrinolysis. ECs synthesize tissue-type plasminogen activator (t-PA) which converts plasminogen to plasmin on their surface. Since plasmin can lyse the fibrin clot, t-PA administration has been clinically used to treat occlusive vascular diseases. However, reocclusion
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Schönherr, Marek. "Improving predictions for collider observables by consistently combining fixed order calculations with resummed results in perturbation theory." Doctoral thesis, 2011. https://tud.qucosa.de/id/qucosa%3A25914.

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With the constantly increasing precision of experimental data acquired at the current collider experiments Tevatron and LHC the theoretical uncertainty on the prediction of multiparticle final states has to decrease accordingly in order to have meaningful tests of the underlying theories such as the Standard Model. A pure leading order calculation, defined in the perturbative expansion of said theory in the interaction constant, represents the classical limit to such a quantum field theory and was already found to be insufficient at past collider experiments, e.g. LEP or Hera. Such a leading o
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Pulmann, Ján. "S-matice a homologické perturbační lemma." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-345285.

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Loop homotopy Lie algebras, which appear in closed string field theory, are a generalization of homotopy Lie algebras. For a loop homotopy Lie algebra, we transfer its structure on its homology and prove that the transferred structure is again a loop homotopy algebra. Moreover, we show that the homological perturbation lemma can be regarded as a path integral, integrating out the degrees of freedom which are not in the homology. The transferred action then can be interpreted as an effective action in the Batalin-Vilkovisky formalism. A review of necessary results from Batalin- Vilkovisky forma
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"Chance-constrained optimization with stochastically dependent perturbations." 2012. http://library.cuhk.edu.hk/record=b5549428.

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近年来，随着机会约束规划被广泛应用以及凸分析和概率论的新进展，如何有效的处理机会约束成为一个炙手可热的研究方向。其中，一个成功的解决方法就是考虑其安全可解近似，也就是说将机会约束转化成一组方便处理的确定性约束，并且保持原机会约束在新的约束下成立。目前这样的方法主要应用于带有独立分布的数据扰动的机会约束规划，或者已知扰动的协方差矩阵的情况。同时，带有相关数据扰动的机会约束下的锥不等式广泛应用于供应链管理、金融、控制以及信号处理等学科，而现有的优化理论却极少涵盖。<br>在这篇论文中我们主要研究机会约束下的线性矩阵不等式，并假设扰动分布不必相互独立，其仅有的相关性信息只由一系列子扰动的独立关系结构提供。通过推导矩阵值随机变量的大偏差上界，我们得出这一类条件约束的安全可解近似。我们随后考虑了基于条件风险价值度量的机会约束规划问题, 以及带多项式扰动的机会约束优化问题。另外，通过构造相应的鲁棒对等式的不确定集合，我们把机会约束规划转换成鲁棒优化问题。由于这种近似可以表示为一组线性矩阵不等式，因而可以使用现成的优化软件方便地求解。最后，我们把该安全可解近似方法运用到一个控制理论问题，以及一个带风险价值约束的投资组合优化问题中。<br>The wide applicability of chanceconstrained programming, together with advances
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Nicholson, Eric Alexander. "Perturbative Wilsonian formalism for noncommunicative gauge theories in the matrix representation." Thesis, 2003. http://wwwlib.umi.com/cr/utexas/fullcit?p3116132.

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Bashier, Eihab Bashier Mohammed. "Fitted numerical methods for delay differential equations arising in biology." Thesis, 2009. http://hdl.handle.net/11394/3134.

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Philosophiae Doctor - PhD<br>Fitted Numerical Methods for Delay Di erential Equations Arising in Biology E.B.M. Bashier PhD thesis, Department of Mathematics and Applied Mathematics,Faculty of Natural Sciences, University of the Western Cape. This thesis deals with the design and analysis of tted numerical methods for some delay di erential models that arise in biology. Very often such di erential equations are very complex in nature and hence the well-known standard numerical methods seldom produce reliable numerical solutions to these problems. Ine ciencies of these methods are mostly
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