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Dissertations / Theses on the topic 'Multiplicative system'

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Published: 28 May 2022

Last updated: 31 July 2025

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1

Wu, Yue. "Pathwise anticipating random periodic solutions of SDEs and SPDEs with linear multiplicative noise." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/15991.

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In this thesis, we study the existence of pathwise random periodic solutions to both the semilinear stochastic differential equations with linear multiplicative noise and the semilinear stochastic partial differential equations with linear multiplicative noise in a Hilbert space. We identify them as the solutions of coupled forward-backward infinite horizon stochastic integral equations in general cases, and then perform the argument of the relative compactness of Wiener-Sobolev spaces in C([0, T],L2Ω,Rd)) or C([0, T],L2(Ω x O)) and Schauder's fixed point theorem to show the existence of a sol

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2

Högele, Michael, and Ilya Pavlyukevich. "Metastability of Morse-Smale dynamical systems perturbed by heavy-tailed Lévy type noise." Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7063/.

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We consider a general class of finite dimensional deterministic dynamical systems with finitely many local attractors each of which supports a unique ergodic probability measure, which includes in particular the class of Morse–Smale systems in any finite dimension. The dynamical system is perturbed by a multiplicative non-Gaussian heavytailed Lévy type noise of small intensity ε > 0. Specifically we consider perturbations leading to a Itô, Stratonovich and canonical (Marcus) stochastic differential equation. The respective asymptotic first exit time and location problem from each of the domai

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3

Owusu-Kesseh, Daniel. "The Relative Security Metric of Information Systems: Using AIMD Algorithms." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1462278857.

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4

El-Bialy, Ahmed Mohamed. "Control of multiplicative discrete-time systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=case1055262732.

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5

Alves, Fabricio Fernando [UNESP]. "Teorema ergódico multiplicativo de oseledets." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/94212.

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Made available in DSpace on 2014-06-11T19:26:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-18Bitstream added on 2014-06-13T20:16:03Z : No. of bitstreams: 1 alves_ff_me_sjrp.pdf: 362207 bytes, checksum: 9a797ca400dea6e139af98c5a9f10378 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Este trablaho apresenta os conceitos de Lyapounov e de espaços próprios e fornece um resultado devido a Oseledets, o qual trata da existência desses expoentes (e, consequentemente, dos espaços próprios) do ponto de vista da teoria da medida. A prova do teorema que nós

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Alves, Fabricio Fernando. "Teorema ergódico multiplicativo de oseledets /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/94212.

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Orientador: Vanderlei Minori Horita<br>Banca: Daniel Smania Brandão<br>Banca: Ali Messaoudi<br>Resumo: Este trablaho apresenta os conceitos de Lyapounov e de espaços próprios e fornece um resultado devido a Oseledets, o qual trata da existência desses expoentes (e, consequentemente, dos espaços próprios) do ponto de vista da teoria da medida. A prova do teorema que nós fornecemos foi dada originalmente por Mañe e posteriormente melhorada por Viana.<br>Abstract: This work presents the concepts of Lyapounov exponents and of proper spaces and provides a result due to Oseledets, wich deals with th

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7

Silva, Eberson Ferreira da. "Teorema Ergódico Multiplicativo de Oseledets." Universidade Federal da Paraíba, 2013. http://tede.biblioteca.ufpb.br:8080/handle/tede/7412.

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Made available in DSpace on 2015-05-15T11:46:14Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1157760 bytes, checksum: 92f98240dbe489848ba24b01c26729de (MD5) Previous issue date: 2013-04-08<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>In this paper, we study a version of the Multiplicative Ergodic Theorem of Oseledets for diffeomorphisms of class C1 on a compact Riemannian manifold of finite dimension which ensures the existence of Lyapunov exponents at almost every point with respect to a Borel probability measure invariant by diffeomorphism. In fact, we d

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8

Heinemann, Stephen Heinemann Stephen Heinemann Stephen. "Pitch-class set multiplication in Boulez's Le marteau sans maitre /." Thesis, Connect to this title online; UW restricted, 1993. http://hdl.handle.net/1773/11257.

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9

Imran, Muhammad, and Khursheed Khursheed. "MIMO Multiplierless FIR System." Thesis, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-20575.

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<p>The main issue in this thesis is to minimize the number of operations and the energy consumption per operation for the computation (arithmetic operation) part of DSP circuits, such as Finite Impulse Response Filters (FIR), Discrete Cosine Transform (DCT), and Discrete Fourier Transform (DFT) etc. More specific, the focus is on the elimination of most frequent common sub-expression (CSE) in binary, Canonic Sign Digit (CSD), Twos Complement or Sign Digit representation of the coefficients of non-recursive multiple input multiple output (MIMO) FIR system , which can be realized using shift-an

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10

Barbieri, Fabio. "Linear systems with Markov jumps and multiplicative noises: the constrained total variance problem." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-17032017-100317/.

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In this work we study the stochastic optimal control problem of discrete-time linear systems subject to Markov jumps and multiplicative noises. We consider the multiperiod and finite time horizon optimization of a mean-variance cost function under a new criterion. In this new problem, we apply a constraint on the total output variance weighted by its risk parameter while maximizing the expected output. The optimal control law is obtained from a set of interconnected Riccati difference equations, extending previous results in the literature. The application of our results is exemplified by nume

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11

Allahyani, Seham. "Contributions to filtering under randomly delayed observations and additive-multiplicative noise." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/16297.

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This thesis deals with the estimation of unobserved variables or states from a time series of noisy observations. Approximate minimum variance filters for a class of discrete time systems with both additive and multiplicative noise, where the measurement might be delayed randomly by one or more sample times, are investigated. The delayed observations are modelled by up to N sample times by using N Bernoulli random variables with values of 0 or 1. We seek to minimize variance over a class of filters which are linear in the current measurement (although potentially nonlinear in past measurements

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12

Shahbunder, Hesham Ibrahim. "STUDY ON SUBCRITICAL MULTIPLICATION PARAMETERS FOR NEUTRONICS DESIGN OF ACCELERATOR DRIVEN SYSTEM." Kyoto University, 2010. http://hdl.handle.net/2433/131876.

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13

Alves, Luciana Aparecida. "Expoentes de Lyapunov e o teorema ergodico multiplicativo de Oseledec." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/305800.

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Orientador: Luiz Antonio Barreira San Martin<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Científica<br>Made available in DSpace on 2018-08-08T04:52:24Z (GMT). No. of bitstreams: 1 Alves_LucianaAparecida_M.pdf: 720915 bytes, checksum: 31e0287aff59267244e774856c7d82af (MD5) Previous issue date: 2007<br>Resumo: O principal objetivo desta dissertação é fornecer condições para garantirmos a existencia dos expoentes de Lyapunov. Inicialmente, introduzimos o conceito de expoente de Lyapunov associado a sistemas de equaçoes difere

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14

Venkataraman, Mahalingam. "Improving accuracy in logarithmic multiplication using operand decomposition." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001140.

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15

Yuan, Ping. "Gain, noise and bandwidth of avalanche photodiodes with thin multiplication regions /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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16

Lian, Zeng. "Lyapunov Exponents and Invariant Manifold for Random Dynamical Systems in a Banach Space." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2555.pdf.

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17

Floridia, Giuseppe. "Approximate multiplicative controllability for degenerate parabolic problems and regularity properties of elliptic and parabolic systems." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1051.

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This thesis consists of two parts, both related to the theory of parabolic equations and systems. The first part is devoted to control theory which studies the possibility of influencing the evolution of a given system by an external action called control. Here we address approximate controllability problems via multiplicative controls, motivated by our interest in some differential models for the study of climatology. In the second part of the thesis we address regularity issues on the local differentiability and H\"older regularity for weak solutions of nonlinear systems in divergence form.

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18

Smith, M. A. "Simulating multiplicative neural processes in non-orthogonal coordinate systems, a three-dimensional tensor model of the VOR." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22877.pdf.

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19

Oliveira, Alexandre de. "Controle ótimo de sistemas lineares com saltos Markovianos e ruídos multiplicativos sob o critério de média variância ao longo do tempo." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-16042012-101655/.

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Este estudo considera o modelo de controle ótimo estocástico sob um critério de média-variância para sistemas lineares a tempo discreto sujeitos a saltos Markovianos e ruídos multiplicativos sob dois critérios. Inicialmente, consideramos como critério de desempenho a minimização multiperíodo de uma combinação entre a média e a variância da saída do sistema sem restrições. Em seguida, consideramos o critério de minimização multiperíodo da variância da saída do sistema ao longo do tempo com restrições sobre o valor esperado mínimo. Condições necessárias e suficientes explícitas para a exist

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20

Jonasson, Jens. "Systems of Linear First Order Partial Differential Equations Admitting a Bilinear Multiplication of Solutions." Doctoral thesis, Linköping : Department of Mathematics, Linköpings universitet, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9949.

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21

Thumma, Vineeth Reddy. "Optimizing Sparse Matrix-Matrix Multiplication for Graph Computations on GPUs and Multi-Core Systems." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524113772955789.

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22

Pinto, Italo ivo Lima Dias. "Efeito da quantidade finita de osciladores em sistemas estocásticos de dois níveis." Universidade Federal da Paraíba, 2014. http://tede.biblioteca.ufpb.br:8080/handle/tede/5760.

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Made available in DSpace on 2015-05-14T12:14:15Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 705049 bytes, checksum: 4794f7004746261efe9996d47989dd1f (MD5) Previous issue date: 2014-10-21<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>In this thesis, we presented models of two state stochastic systems which interact through a global coupling, in a way that each population unit contributes to the state transition rates of the other units. We presented two models of global coupling in which is possible to observe a phase transition of a regime with units equal

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23

Al-Hasani, Firas Ali Jawad. "Multiple Constant Multiplication Optimization Using Common Subexpression Elimination and Redundant Numbers." Thesis, University of Canterbury. Electrical and Computer Engineering, 2014. http://hdl.handle.net/10092/9054.

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The multiple constant multiplication (MCM) operation is a fundamental operation in digital signal processing (DSP) and digital image processing (DIP). Examples of the MCM are in finite impulse response (FIR) and infinite impulse response (IIR) filters, matrix multiplication, and transforms. The aim of this work is minimizing the complexity of the MCM operation using common subexpression elimination (CSE) technique and redundant number representations. The CSE technique searches and eliminates common digit patterns (subexpressions) among MCM coefficients. More common subexpressions can be found

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24

Weimerskirch, Andre. "The Application of the Mordell-Weil Group to Cryptographic Systems." Digital WPI, 2001. https://digitalcommons.wpi.edu/etd-theses/321.

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This thesis examines the Mordell-Weil group for application in cryptography. This approach has recently been proposed by Gerhard Frey. The use of the Mordell-Weil group for discrete logarithm schemes is a variant of elliptic curve cryptosystems. We extended the original idea by Frey with the goal of a performance improvement. The arithmetic complexity using the Mordell-Weil group will be compared to ordinary elliptic curve cryptosystems. The main goals of this thesis are (1) to investigate the algorithmic complexity of Mordell-Weil cryptosystems relative to elliptic curve cryptosystems; (2) th

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25

Павленко, Олена Олексіївна, Елена Алексеевна Павленко, Olena Oleksiivna Pavlenko, Юлія Тагібеківна Алібекова, Юлия Тагибековна Алибекова та Yuliia Tahibekivna Alibekova. "Визначення взаємозв’язків соціо-еколого-економічної системи на регіональному рівні управління". Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/42594.

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У статті визначено взаємозв’язки соціо-еколого-економічної системи на прикладі Сумської області. Запропоновано враховувати появу можливих синергетичних та мультиплікативних ефектів в процесі взаємодії соціальної, економічної та екологічної підсистем при впровадженні економічних інструментів управління територією.

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26

Денисов, Станіслав Іванович, Станислав Иванович Денисов, Stanislav Ivanovych Denysov, Олена Олександрівна Бондар, Елена Александровна Бондарь та Olena Oleksandrivna Bondar. "Новый класс индуцируемых шумом переходов". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40209.

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Хорошо известно, что внешний шум в динамических системах может играть конструктивную роль. Важным примером этого служат индуцированные шумом переходы в одномерных системах, в результате которых их стационарные функции распределения претерпевают качественные изменения с изменением интенсивности шума. В случае, когда флуктуации моделируются гауссовским белым шумом, необходимым условием существования таких переходов является мультипликативность шума. В данной работе показано, что индуцированные шумом переходы могут существовать и в системах с аддитивным, но негауссовским белым шумом.

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27

Bigot, Renaud. "Impact de la multiplication chez l'hôte Acanthamoeba castellanii sur le développement de biofilms chez Legionella pneumophila." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2315/document.

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Legionella pneumophila est une bactérie intracellulaire facultative retrouvée aussi bien dans les environnements aqueux naturels qu'artificiels. Cette bactérie est l'agent de la légionellose, une pneumopathie sévère. Les milieux aqueux sont colonisés par des biofilms, une association de micro-organismes enveloppés d'une matrice exopolymérique. Les légionelles sont capables de coloniser et de survivre au sein de ces biofilms. Dans les réseaux d'eaux, les biofilms sont la cible de la prédation des amibes qui se retrouvent ensuite parasités par les légionelles et favorisent ainsi leur multiplicat

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28

Paulo, Wanderlei Lima de. "Controle ótimo de sistemas com saltos Markovianos e ruído multiplicativo com custos linear e quadrático indefinido." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-14012008-102952/.

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Esta tese trata do problema de controle ótimo estocástico de sistemas com saltos Markovianos e ruído multiplicativo a tempo discreto, com horizontes de tempo finito e infinito. A função custo é composta de termos quadráticos e lineares nas variáveis de estado e de controle, com matrizes peso indefinidas. Como resultado principal do problema com horizonte finito, é apresentada uma condição necessária e suficiente para que o problema de controle seja bem posto, a partir da qual uma solução ótima é derivada. A condição e a lei de controle são escritas em termos de um conjunto acoplado de equações

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29

Faiz, Tariq Nadeem. "Deadlock detection and avoidance for a class of manufacturing systems." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1178654511.

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30

Zhao, Junyilang. "Dynamics for a Random Differential Equation: Invariant Manifolds, Foliations, and Smooth Conjugacy Between Center Manifolds." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7362.

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In this dissertation, we first prove that for a random differential equation with the multiplicative driving noise constructed from a Q-Wiener process and the Wiener shift, which is an approximation to a stochastic evolution equation, there exists a unique solution that generates a local dynamical system. There also exist a local center, unstable, stable, centerunstable, center-stable manifold, and a local stable foliation, an unstable foliation on the center-unstable manifold, and a stable foliation on the center-stable manifold, the smoothness of which depend on the vector fields of the equa

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31

Renbi, Abdelghani. "Power and Energy Efficiency Evaluation for HW and SW Implementation of nxn Matrix Multiplication on Altera FPGAs." Thesis, Jönköping University, JTH, Computer and Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-10545.

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<p>In addition to the performance, low power design became an important issue in the design process of mobile embedded systems. Mobile electronics with rich features most often involve complex computation and intensive processing, which result in short battery lifetime and particularly when low power design is not taken in consideration. In addition to mobile computers, thermal design is also calling for low power techniques to avoid components overheat especially with VLSI technology. Low power design has traced a new era. In this thesis we examined several techniques to achieve low power des

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32

Okimura, Rodrigo Takashi. "Controle ótimo multi-período de média-variância para sistemas lineares sujeitos a saltos Markovianos e ruídos multiplicativos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-05062009-094823/.

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Este estudo considera o problema de controle ótimo multi-período de média-variância para sistemas em tempo discreto com saltos markovianos e ruídos multiplicativos. Inicialmente considera-se um critério de desempenho formado por uma combinação linear da variância nal e valor esperado da saída do sistema. É apresentada uma solução analítica na obtenção da estratégia ótima para este problema. Em seguida são considerados os casos onde os critérios de desempenho são minimizar a variância nal sujeito a uma restrição no valor esperado ou maximizar o valor esperado nal sujeito a uma restrição na vari

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33

Okonkwo, Igweani Uchenna Titus. "Optical fiber transmission systems for in-door next generation broadband access network." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/10539.

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This thesis investigates the generation and radio-over-fibre (RoF) transport of unlicensed 60 GHz millimetre-wave (mm-wave) frequency band. The investigated benefits of transmission schemes applicable for the mm-wave generation include optical carrier suppression (OCS), optical frequency multiplication (OFM) and remote heterodyne detection (RHD). For the in-door cabling of the mm-wave transmission, a low-cost polymer optical fibre (POF) along with bend-insensitive single mode fibre (BI-SMF) has been investigated for short-range networks. Transporting mm-wave generated signals over POF and BI-S

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Burgess, Pauline A. "Effect of lauric acid and monolaurin on the multiplication of Listeria monocytogenes and Listeria innocua at 10°C in bi-phasic systems." Thesis, Sheffield Hallam University, 1999. http://shura.shu.ac.uk/19410/.

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The effect of monolaurin (0.35 mM) and lauric acid (5.0 mM) alone and in combination has been tested on growth of three cheesebome strains of Listeria monocytogenes and two strains of L. innocna. The Listeria spp. were grown in Tryptose Soya Yeast Glucose Broth (TSGYB) in shake culture at 10 °C and an initial pH of 7.0. The additives were dissolved in butter oil 10 % (w/v). Lauric acid (5.0 mM) increased the doubling time of the five Listeria spp. by 3 - 8 h at 10 °C. Monolaurin by itself was found to slightly increase or decrease the doubling time depending on the microbial strain. Mo

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Oudjida, Abdelkrim Kamel. "Binary Arithmetic for Finite-Word-Length Linear Controllers : MEMS Applications." Thesis, Besançon, 2014. http://www.theses.fr/2014BESA2001/document.

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Cette thèse traite le problème d'intégration hardware optimale de contrôleurs linéaires à taille de mot finie, dédiés aux applications MEMS. Le plus grand défi est d'assurer des performances de contrôle satisfaisantes avec un minimum de ressources logiques. Afin d'y parvenir, deux optimisations distinctes mais complémentaires peuvent être entreprises: en théorie de contrôle et en arithmétique binaire. Seule cette dernière est considérée dans ce travail.Comme cette arithmétique cible des applications MEMS, elle doit faire preuve de vitesse afin de prendre en charge la dynamique rapide des MEMS,

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Chen, Zhimin. "SCA-Resistant and High-Performance Embedded Cryptography Using Instruction Set Extensions and Multi-Core Processors." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/51256.

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Nowadays, we use embedded electronic devices in almost every aspect of our daily lives. They represent our electronic identity; they store private information; they monitor health status; they do confidential communications, and so on. All these applications rely on cryptography and, therefore, present us a research objective: how to implement cryptography on embedded systems in a trustworthy and efficient manner. Implementing embedded cryptography faces two challenges - constrained resources and physical attacks. Due to low cost constraints and power budget constraints, embedded device

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Алексієвський, Дмитро Геннадійович. "Синтез електромеханічних систем вітроенергетичних установок з аеродинамічним мультиплікуванням". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/47742.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.09.03 "Електротехнічні комплекси та системи" (14 - Електрична інженерія) - Запорізький національний університет, Запоріжжя, 2020. Подана до захисту до спеціалізованої вченої ради Д 64.050.04 у Національному технічному університеті "Харківський політехнічний інститут". Дисертація присвячена вирішенню актуальної наукової проблеми, що полягає у розвитку теоретичних засад синтезу електромеханічних систем вітроенергетичних установок (ВЕУ) з аеродинамічним мультиплікуванням (АДМ), які забезпечують максимальну ефектив

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Алексієвський, Дмитро Геннадійович. "Синтез електромеханічних систем вітроенергетичних установок з аеродинамічним мультиплікуванням". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/47741.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.09.03 "Електротехнічні комплекси та системи" - Запорізький національний університет, Запоріжжя, 2020. Дисертація присвячена вирішенню актуальної наукової проблеми, що полягає у розвитку теоретичних засад синтезу електромеханічних систем вітроенергетичних установок з аеродинамічним мультиплікуванням, які забезпечують максимальну ефективність роботи ВЕУ з точки зору відбору потужності від вітрового потоку та підвищення їх експлуатаційної надійності. Запропонована узагальнена математична модель вітроелектрогенеру

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Heidernätsch, Mario. "On the diffusion in inhomogeneous systems." Doctoral thesis, Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-169979.

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Ziel dieser Arbeit ist die Untersuchung des Einflusses der stochastischen Interpretation der Langevin Gleichung mit zustandsabhängigen Diffusionskoeffizienten auf den Propagator des zugehörigen stochastischen Prozesses bzw. dessen Mittelwerte. Dies dient dem besseren Verständnis und der Interpretation von Messdaten von Diffusion in inhomogenen Systemen und geht einher mit der Frage der Form der Diffusionsgleichung in solchen Systemen. Zur Vereinfachung der Fragestellung werden in dieser Arbeit nur Systeme untersucht die vollständig durch einen ortsabhängigen Diffusionskoeffizienten und Angabe

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Richez-Dumanois, Christine. "Multiplication vegetative et conservation in vitro d'un clone selectionne de chanvre a fibres (cannabis sativa l. ) : influence sur le developpement et la teneur en cannabinoides." Paris 6, 1987. http://www.theses.fr/1987PA066602.

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Le chanvre fait l'objet de nombreux travaux de selection portant sur la qualite de la fibre et le contenu en cannabinoides des plantes. Le but de cette etude est la mise au point pour un clone de chanvre a fibre, de methodes de multiplication vegetative et de conservation, adaptees a la selection varietable du chanvre. L'etude du bouturage horticole dans differentes conditions thermiques et photoperiodiques a montre l'effet positif de l'alternance des temperatures sur le developpement morphologique et chimique des boutures ainsi que la necessite d'un eclairement continu pour le maintien des pl

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Azemi, Ghasem. "Mobile velocity estimation using a time-frequency approach." Thesis, Queensland University of Technology, 2003. https://eprints.qut.edu.au/15807/1/Ghasem_Azemi_Thesis.pdf.

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This thesis deals with the problem of estimating the velocity of a mobile station (MS)in a mobile communication system using the instantaneous frequency (IF) of the received signal at the MS antenna. This estimate is essential for satisfactory handover performance, effective dynamic channel assignment, and optimisation of adaptive multiple access wireless receivers. Conventional methods for estimating the MS velocity are based either on the statistics of the envelope or quadrature components of the received signal. In chapter 4 of the thesis, we show that their performance deteriorates in

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Azemi, Ghasem. "Mobile Velocity Estimation Using a Time-Frequency Approach." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15807/.

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This thesis deals with the problem of estimating the velocity of a mobile station (MS)in a mobile communication system using the instantaneous frequency (IF) of the received signal at the MS antenna. This estimate is essential for satisfactory handover performance, effective dynamic channel assignment, and optimisation of adaptive multiple access wireless receivers. Conventional methods for estimating the MS velocity are based either on the statistics of the envelope or quadrature components of the received signal. In chapter 4 of the thesis, we show that their performance deteriorates in

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Wong, Kenneth Koon-Ho. "Applications of finite field computation to cryptology : extension field arithmetic in public key systems and algebraic attacks on stream ciphers." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/17570/1/Kenneth_Wong_Thesis.pdf.

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In this digital age, cryptography is largely built in computer hardware or software as discrete structures. One of the most useful of these structures is finite fields. In this thesis, we explore a variety of applications of the theory and applications of arithmetic and computation in finite fields in both the areas of cryptography and cryptanalysis. First, multiplication algorithms in finite extensions of prime fields are explored. A new algebraic description of implementing the subquadratic Karatsuba algorithm and its variants for extension field multiplication are presented. The use of cy-

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Wong, Kenneth Koon-Ho. "Applications of finite field computation to cryptology : extension field arithmetic in public key systems and algebraic attacks on stream ciphers." Queensland University of Technology, 2008. http://eprints.qut.edu.au/17570/.

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In this digital age, cryptography is largely built in computer hardware or software as discrete structures. One of the most useful of these structures is finite fields. In this thesis, we explore a variety of applications of the theory and applications of arithmetic and computation in finite fields in both the areas of cryptography and cryptanalysis. First, multiplication algorithms in finite extensions of prime fields are explored. A new algebraic description of implementing the subquadratic Karatsuba algorithm and its variants for extension field multiplication are presented. The use of cy-

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Schmakat, Philipp [Verfasser], PETER [Akademischer Betreuer] [Gutachter] BOENI, and Winfried [Gutachter] Petry. "Neutron Depolarisation Measurements of Ferromagnetic Quantum Phase Transitions : Wavelength-Frame Multiplication Chopper System for the Imaging Instrument ODIN at the ESS / Philipp Schmakat ; Gutachter: Peter Böni, Winfried Petry ; Betreuer: Peter Böni." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1115332848/34.

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Kandji, Baye Matar. "Stochastic recurrent equations : structure, statistical inference, and financial applications." Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAG004.

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Nous nous intéressons à l'étude des propriétés théoriques des équations récurrentes stochastiques (SRE) et de leurs applications en finance. Ces modèles sont couramment utilisés en économétrie, y compris en économétrie de la finance, pour styliser la dynamique d'une variété de processus tels que la volatilité des rendements financiers. Cependant, la structure de probabilité ainsi que les propriétés statistiques de ces modèles sont encore mal connues, particulièrement lorsque le modèle est considéré en dimension infinie ou lorsqu'il est généré par un processus non indépendant. Ces deux caractér

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Praz, Françoise. "Effets de l'activation du systeme du complement sur differentes populations lymphocytaires." Paris 6, 1987. http://www.theses.fr/1987PA066589.

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Gallin, Gabriel. "Unités arithmétiques et cryptoprocesseurs matériels pour la cryptographie sur courbe hyperelliptique." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S071/document.

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De nombreux systèmes numériques nécessitent des primitives de cryptographie asymétrique de plus en plus performantes mais aussi robustes aux attaques et peu coûteuses pour les applications embarquées. Dans cette optique, la cryptographie sur courbe hyperelliptique (HECC) a été proposée comme une alternative intéressante aux techniques actuelles du fait de corps finis plus petits. Nous avons étudié des cryptoprocesseurs HECC matériels performants, flexibles et robustes contre certaines attaques physiques. Tout d’abord, nous avons proposé une nouvelle architecture d’opérateurs exécutant, en para

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Mosrati, Rhida. "Nouvelle approche de la cinétique fermentaire de Saccharomyces cerevisiae et de la conduite d'un procédé semi-continu : modélisation de la croissance basée sur le bilan énergétique de la levure, commande prédictive et floue." Vandoeuvre-les-Nancy, INPL, 1993. http://docnum.univ-lorraine.fr/public/INPL_T_1993_MOSRATI_R.pdf.

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Saccharomyces cerevisiae est une levure largement utilisée pour la panification et la fermentation alcoolique. Elle suscite, aujourd'hui, de nouveaux champs d'application tels que la production de molécules à haute valeur ajoutée. Dans le but d'une meilleure connaissance et d'une mise en œuvre optimale, une souche commerciale de cette levure a été étudiée. Dans un premier temps, une méthode de traitement et de validation de données brutes a été mise au point. Ensuite, la cinétique d'entrainement de l'acétaldéhyde, molécule volatile produite au cours de la croissance de la levure, a été quantif

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Bukhari, Zahida. "Controle genetique de la production d'interleukine-2 chez la souris." Paris 7, 1987. http://www.theses.fr/1987PA077022.

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