Tesis sobre el tema "Translation de signal à signal"
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Ponnala, Lalit. "Analysis of Genetic Translation using Signal Processing". NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-02072007-174200/.
Texto completoGirault, Benjamin. "Signal Processing on Graphs - Contributions to an Emerging Field". Thesis, Lyon, École normale supérieure, 2015. http://www.theses.fr/2015ENSL1046/document.
Texto completoThis dissertation introduces in its first part the field of signal processing on graphs. We start by reminding the required elements from linear algebra and spectral graph theory. Then, we define signal processing on graphs and give intuitions on its strengths and weaknesses compared to classical signal processing. In the second part, we introduce our contributions to the field. Chapter 4 aims at the study of structural properties of graphs using classical signal processing through a transformation from graphs to time series. Doing so, we take advantage of a unified method of semi-supervised learning on graphs dedicated to classification to obtain a smooth time series. Finally, we show that we can recognize in our method a smoothing operator on graph signals. Chapter 5 introduces a new translation operator on graphs defined by analogy to the classical time shift operator and verifying the key property of isometry. Our operator is compared to the two operators of the literature and its action is empirically described on several graphs. Chapter 6 describes the use of the operator above to define stationary graph signals. After giving a spectral characterization of these graph signals, we give a method to study and test stationarity on real graph signals. The closing chapter shows the strength of the matlab toolbox developed and used during the course of this PhD
Messaoud, Safa. "Translating Discrete Time SIMULINK to SIGNAL". Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/49299.
Texto completoMaster of Science
Mittermayr, Lukas Verfasser] y Dario Michael [Akademischer Betreuer] [Leister. "Identification of factors involved in the translation : dependant signal transduction process / Lukas Mittermayr. Betreuer: Dario Leister". München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2013. http://d-nb.info/1070464910/34.
Texto completoDe, Laurentiis Evelina Ines. "Kinetic analyses on two translational GTPases : LepA and EF-Tu". Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Chemistry and Biochemistry, 2013. http://hdl.handle.net/10133/3450.
Texto completoxiii, 177 leaves : col. ill. ; 29 cm
Jacquet, Gottfried. "Hybrid physics-based/data-based seismic ground motion generator of a site". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST035.
Texto completoAccurately estimating the seismic response following an earthquake can save lives. However, limited computational resources and poorly characterized and unknown variability in geology and seismotectonic context pose significant challenges for simulations at the scale of a city or region. This thesis proposes a new approach com- bining adversarial learning methods and physics-based simulations to overcome these limitations, based on the SeismoALICE framework (F. GATTI and D. CLOUTEAU: "Towards blending Physics-Based numerical simulations and seismic databases using Generative Adversarial Network," CMAME 2020). Because of the random fluctuations in the mechanical properties of the geological medium, numerical simulations can only give results for low frequencies (LF) down to 5 or even 10 Hz. The design frequency for civil engineering structures and equipment, on the other hand, reaches 40 Hz. This thesis aims to simulate seismic signals with a higher frequency range [0 - 30 Hz] using knowledge of low-frequency signals and a database of recorded signals. To this end, we are developing an encoder and decoder adapted to seismic signals using a Conformer variant of attention techniques to capture the long-duration correlations present in accelerograms. The discriminator, which ensures that simulated signals resemble recorded signals, has been the subject of extensive development, enabling the encoder and decoder to be optimized using a min-max technique at the heart of adversarialmachine learning methods. To force signal recon- struction, we adapt Focal Frequency Loss (FFL) and Hyper-Spherical Loss (HSL), which are more efficient for this data type, to time series. We then complement the LF signals up to 30 Hz by ex- ploring different generation cases, one-to-one map- ping, and one-to-many mapping to assess the plausibility of the reconstructions in the database. Five methods were developed: Signal-to-Signal Translation, SeismoALICE with shared latent space, SeismoALICE with factorized latent space, BicycleGAN for time series, and Multi-Modal Signal Translation. Their performance was evaluated using Kristeková's Goodness-of-Fit. By manipulating the hidden variables, we proved that it is possible to divide the information into two groups of variables with Gaussian distributions, one for low frequencies and the other for high frequencies. This interpretability made it possible to manipulate the latent space and control the one-to-many mapping. The models, trained on 128,000 seismic signals from the Stanford Earthquake Database (STEAD), demonstrated their performance, with prediction qualities ranging from good to excellent. Finally, their effectiveness was demonstrated by application to the 2019 Le Teil earthquake (in the Ardèche region of Auvergne-Rhone-Alpes, France). This work paves the way for more accurate and efficient prediction of seismic signals by seamlessly integrating physics-based knowledge and machine learning
Kerins, Michael John, Ajay Amar Vashisht, Benjamin Xi-Tong Liang, Spencer Jordan Duckworth, Brandon John Praslicka, James Akira Wohlschlegel y Aikseng Ooi. "Fumarate Mediates a Chronic Proliferative Signal in Fumarate Hydratase-Inactivated Cancer Cells by Increasing Transcription and Translation of Ferritin Genes". AMER SOC MICROBIOLOGY, 2017. http://hdl.handle.net/10150/624216.
Texto completoHamirally, Sofia. "Mechanistic studies of the translational readthrough signal of Moloney murine leukemia virus". Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619933.
Texto completoColberg, Clara Ottilie Freifrau Loeffelholz von. "Etudes au microscope électronique du transport des protéines durant la traduction chez E. Coli, et de la terminaison de la traduction chez l'homme". Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENV038/document.
Texto completoThe signal recognition particle (SRP) and its receptor (FtsY in Escherichia coli) mediate co-translational protein targeting by delivering ribosome nascent chain complexes (RNCs) to the target membrane. Recognition of an RNC cargo by SRP is dependent on an N-terminal signal sequence. Binding of FtsY to the RNC-SRP complex leads to several conformational changes of SRP and FtsY during the targeting cycle: first, an “early” GTP-independent state is adopted which is stabilized by the RNC, subsequently a “closed” GTP- dependent conformation is formed which can activate itself to hydrolyze GTP (the “activated” state). Faithful completion of all three steps leads to release of the cargo from SRP-FtsY and hand over of the RNC to the translocation pore.It has been shown for E. coli that cargos can be rejected from the SRP pathway during all targeting steps. In the first project, our interest concentrates on ribosomes translating the EspP signal sequence (RNCEspP). In vivo, EspP is a post-translationally targeted protein, but RNCEspP has been shown to be bound by SRP and FtsY leading to a non-productive “early”-like RNCEspP-SRP-FtsY complex. Using single particle cryo-electron microscopy (EM), we analysed the structural basis for the rejection of RNCEspP by SRP and FtsY. Comparison of our RNCEspP-SRP-FtsY cryo-EM structure to other available cryo-EM structures of co-translational targeting complexes containing the correct cargo RNCFtsQ unravelled differences in the SRP-FtsY structure between a correct cargo and an incorrect cargo. Two major differences between the targeting complexes containing the cargos RNCFtsQ and RNCEspP were observed: first, the Ffh M-domain was attached to ribosomal RNA helix 59 of RNCEspP, while it was detached from this site in the case of RNCFtsQ. It could be that such an ordered M-domain is hampering the release of the signal sequence which is required for successful completion of targeting. Second, the Ffh-FtsY NG-domain arrangement was flexible in the complex with RNCEspP in comparison to RNCFtsQ indicating that the "early"-like complex formed on RNCEspP is less stable. Biochemical data using fluorescence resonance energy transfer corroborated these results, showing that FtsY is bound with lower affinity in the RNCEspP “early” complex and that the rearrangement to the “closed” conformation is less efficient. Further biochemical analysis of EspP signal sequence variants showed that mainly the N-terminal extension of the EspP signal sequence is responsible for its rejection from the SRP pathway
Ma, Chon Teng. "Biopotential readout front-end circuits using frequency-translation filtering techniques". Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2182904.
Texto completoNgô, Van Chan. "Formal verification of a synchronous data-flow compiler : from Signal to C". Phd thesis, Université Rennes 1, 2014. http://tel.archives-ouvertes.fr/tel-01067477.
Texto completoTran, Thi Bich-Ha. "Modélisation du bruit d'intensité des lasers InGaAsP : étude de la translation du bruit basse fréquence dans la bande du signal de modulation". Toulouse, ENSAE, 1997. http://www.theses.fr/1997ESAE0010.
Texto completoLupi, Rosita. "Characterization of post translational modification of heterotrimeric G proteins". Thesis, Open University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343748.
Texto completoDella, Corte Giuseppe. "Text and Speech Alignment Methods for Speech Translation Corpora Creation : Augmenting English LibriVox Recordings with Italian Textual Translations". Thesis, Uppsala universitet, Institutionen för lingvistik och filologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413064.
Texto completoMusallam, Sam. "Nonlinearity and signal processing in vestibulo-only cells and the translational vestibulo-ocular reflex". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63768.pdf.
Texto completoSarkissian, Madathia. "Signaling Events Leading to CPEB-Mediated Translation: a Dissertation". eScholarship@UMMS, 2004. http://escholarship.umassmed.edu/gsbs_diss/305.
Texto completoFlores, Janine Kate. "Characterisation of the human signal recognition particle protein component, SRP68/72, and its role in co-translational translocation". Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18698.
Texto completoPasdeloup, Bastien. "Extending convolutional neural networks to irregular domains through graph inference". Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0048/document.
Texto completoThis manuscript sums up our work on extending convolutional neuralnetworks to irregular domains through graph inference. It consists of three main chapters, each giving the details of a part of a methodology allowing the definition of such networks to process signals evolving on graphs with unknown structures.First, graph inference from data is explored, in order to provide a graph modeling the support of the signals to classify. Second, translation operators that preserve neighborhood properties of the vertices are identified on the inferred graph. Third, these translations are used to shift a convolutional kernel on the graph in order to define a convolutional neural network that is adapted to the input data.We have illustrated our methodology on a dataset of images. While not using any particular knowledge on the signals, we have been able to infer a graph that is close to a grid. Translations on this graph resemble Euclidean translations. Therefore, this has allowed us to define an adapted convolutional neural network that is very close what one would obtain when using the information that signals are images. This network, trained on the initial data, has out performed state of the art methods by more than 13 points, while using a very simple and easily improvable architecture.The method we have introduced is a generalization of convolutional neural networks. As a matter of fact, they can be seen as aparticularization of our approach in the case where the graph is a grid. Our work thus opens the way to numerous perspectives, as it provides an efficient way to build networks that are adapted to the data
Tang, Xiaofang. "Regulation of Wingless secretion, distribution and signaling". University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353100929.
Texto completoChen, Li. "TAK1-Mediated Post-Translational Modifications Modulate Immune Response: A Dissertation". eScholarship@UMMS, 2015. https://escholarship.umassmed.edu/gsbs_diss/786.
Texto completoChen, Li. "TAK1-Mediated Post-Translational Modifications Modulate Immune Response: A Dissertation". eScholarship@UMMS, 2005. http://escholarship.umassmed.edu/gsbs_diss/786.
Texto completoCortes, Fernando da Rocha Paixao. "Analysis, design and implementation of analog/RF blocks suitable for a multi-band analog interface for CMOS SOCs". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/13132.
Texto completoThe development of IC technologies coupled with the demand for more digital signal processing integrated in a single chip has created an increasing need for design of mixed-signal systems in CMOS technology. Previously, a general analog interface architecture targeted to mixed-signal systems on-chip applications was developed and implemented, which is composed by a fixed analog cell (FAC), that translates the input signal to a processing frequency, and a digital block, that processes the signal. The focus of this thesis is to analyze, design and implement analog/RF building blocks suitable for this system. First, a set of system specifications is developed and verified through system level simulations for the FAC system, aiming the signal processing of three target applications: FM, video and digital cellular frequency bands. Then, a fully CMOS integrated dual-conversion heterodyne front-end architecture with 2 active mixers and a variable-gain amplifier is presented, enumerating and proposing solutions for the design challenges and methodology. The stand-alone building blocks and the front-end system are designed and implemented in IBM 0.18μm CMOS process, presenting simulations and experimental data from an actual physical prototype.
Li, Yiming. "Ryanodine receptors in calcium signaling pathways". Scholarly Commons, 2008. https://scholarlycommons.pacific.edu/uop_etds/710.
Texto completoRoulston, Claire. "Occurrence & function of cellular 2A sequences". Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7062.
Texto completoAhmed, A. "Signal separation". Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595390.
Texto completoRosskopf, John J. "CIS-acting signals for replication of Nodamura virus RNA1". To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Texto completoEnglehart, Kevin. "Signal representation for classification of the transient myoelectric signal". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0016/NQ46463.pdf.
Texto completoEnglehart, K. "Signal representation for classification of the transient myoelectric signal". Thesis, University of New Brunswick, 1998. http://hdl.handle.net/1882/808.
Texto completoNeuman, Bartosz P. "Signal processing in diffusion MRI : high quality signal reconstruction". Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/27691/.
Texto completoLiljekvist, Erika y Oscar Hedlund. "Uncovering Signal : Simplifying Forensic Investigations of the Signal Application". Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44835.
Texto completoLönn, Peter. "Regulation of TGF-β Signaling by Post-Translational Modifications". Doctoral thesis, Uppsala universitet, Ludwiginstitutet för cancerforskning, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-128855.
Texto completoFriberg, Markus. "Algorithms for analyzing signals in DNA : applications to transcription and translation /". Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17096.
Texto completoShariat-Yazdi, Ramin. "Mixed signal design flow a mixed signal PLL case study /". Waterloo, Ont. : University of Waterloo, [Dept. of Electrical and Computer Engineering], 2001. http://etd.uwaterloo.ca/etd/rshariatyazdi2001.pdf.
Texto completo"A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Applied Science in Electrical and Computer Engineering". Includes bibliographical references.
Figueroa, Toro Miguel E. "Adaptive signal processing and correlational learning in mixed-signal VLSI /". Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/6856.
Texto completoShariat, Yazdi Ramin. "Mixed signal design flow, a mixed signal PLL case study". Thesis, University of Waterloo, 2001. http://hdl.handle.net/10012/916.
Texto completo李潔安 y Kit-on Niko Li. "Comprehensive restoration plan for Signal Tower at Signal Hill, Tsimshatsui". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B42181549.
Texto completoChen, Cheng. "Simultaneous transmission of baseband signal and in band RF signal". Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708805.
Texto completoHoppe, Elizabeth A. "Improving Signal Clarity through Interference Suppression and Emergent Signal Detection". Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/39325.
Texto completoPh. D.
Wang, Limin. "The ECG signal processing by ADSP-21062 digital signal processor". Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=840.
Texto completoTitle from document title page. Document formatted into pages; contains vi, 110 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 66-68).
Li, Kit-on Niko. "Comprehensive restoration plan for Signal Tower at Signal Hill, Tsimshatsui". Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B42181549.
Texto completoHowell, Brian. "Signal transducing molecules". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39347.
Texto completoThe promoter region of the liver specific, glucocorticoid and cAMP inducible gene, CPSI was analyzed for transcriptional activity. Sequences extending from the in vivo start site of CPSI gene to $-$1200 bp, were shown to support in vitro transcription with liver nuclear extracts. A region proximal to transcription initiation, from $-$104 to $-$124 was shown to specifically interact with the abundant liver nuclear factor C/EBP. Double stranded oligonucleotides corresponding this cis element abolishes in vitro transcription reactions in a competitive manner. The C/EBP and related factors, LAP and LIP, interaction with CPSI promoter elements has implications in the developmental, liver-specific, as well as the inducible aspects of CPSI gene expression.
Mishin, A. "Biomagnetic signal analysis". Thesis, Swansea University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638202.
Texto completoChan, D. C. B. "Blind signal separation". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597415.
Texto completoLee, Li 1975. "Distributed signal processing". Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86436.
Texto completoEldar, Yonina Chana 1973. "Quantum signal processing". Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/16805.
Texto completoIncludes bibliographical references (p. 337-346).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Quantum signal processing (QSP) as formulated in this thesis, borrows from the formalism and principles of quantum mechanics and some of its interesting axioms and constraints, leading to a novel paradigm for signal processing with applications in areas ranging from frame theory, quantization and sampling methods to detection, parameter estimation, covariance shaping and multiuser wireless communication systems. The QSP framework is aimed at developing new or modifying existing signal processing algorithms by drawing a parallel between quantum mechanical measurements and signal processing algorithms, and by exploiting the rich mathematical structure of quantum mechanics, but not requiring a physical implementation based on quantum mechanics. This framework provides a unifying conceptual structure for a variety of traditional processing techniques, and a precise mathematical setting for developing generalizations and extensions of algorithms. Emulating the probabilistic nature of quantum mechanics in the QSP framework gives rise to probabilistic and randomized algorithms. As an example we introduce a probabilistic quantizer and derive its statistical properties. Exploiting the concept of generalized quantum measurements we develop frame-theoretical analogues of various quantum-mechanical concepts and results, as well as new classes of frames including oblique frame expansions, that are then applied to the development of a general framework for sampling in arbitrary spaces. Building upon the problem of optimal quantum measurement design, we develop and discuss applications of optimal methods that construct a set of vectors.
(cont.) We demonstrate that, even for problems without inherent inner product constraints, imposing such constraints in combination with least-squares inner product shaping leads to interesting processing techniques that often exhibit improved performance over traditional methods. In particular, we formulate a new viewpoint toward matched filter detection that leads to the notion of minimum mean-squared error covariance shaping. Using this concept we develop an effective linear estimator for the unknown parameters in a linear model, referred to as the covariance shaping least-squares estimator. Applying this estimator to a multiuser wireless setting, we derive an efficient covariance shaping multiuser receiver for suppressing interference in multiuser communication systems.
by Yonina Chana Eldar.
Ph.D.
Valero, Daniel. "Wireless Signal Conditioning". Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862776/.
Texto completoBurke, Christine. "From the signal". Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5432.
Texto completoManmontri, Uttachai. "A gradient-based approach to unsupervised signal separation using signal properties". Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442068.
Texto completoLei, Chi-un y 李志遠. "VLSI macromodeling and signal integrity analysis via digital signal processing techniques". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B45700588.
Texto completoClewell, Matthew John. "Reducing signal coupling and crosstalk in monolithic, mixed-signal integrated circuits". Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/18138.
Texto completoDepartment of Electrical Engineering
William B. Kuhn
Designers of mixed-signal systems must understand coupling mechanisms at the system, PC board, package and integrated circuit levels to control crosstalk, and thereby minimize degradation of system performance. This research examines coupling mechanisms in a RF-targeted high-resistivity partially-depleted Silicon-on-Insulator (SOI) IC process and applying similar coupling mitigation strategies from higher levels of design, proposes techniques to reduce coupling between sub-circuits on-chip. A series of test structures was fabricated with the goal of understanding and reducing the electric and magnetic field coupling at frequencies up to C-Band. Electric field coupling through the active-layer and substrate of the SOI wafer is compared for a variety of isolation methods including use of deep-trench surrounds, blocking channel-stopper implant, blocking metal-fill layers and using substrate contact guard-rings. Magnetic coupling is examined for on-chip inductors utilizing counter-winding techniques, using metal shields above noisy circuits, and through the relationship between separation and the coupling coefficient. Finally, coupling between bond pads employing the most effective electric field isolation strategies is examined. Lumped element circuit models are developed to show how different coupling mitigation strategies perform. Major conclusions relative to substrate coupling are 1) substrates with resistivity 1 kΩ·cm or greater act largely as a high-K insulators at sufficiently high frequency, 2) compared to capacitive coupling paths through the substrate, coupling through metal-fill has little effect and 3) the use of substrate contact guard-rings in multi-ground domain designs can result in significant coupling between domains if proper isolation strategies such as the use of deep-trench surrounds are not employed. The electric field coupling, in general, is strongly dependent on the impedance of the active-layer and frequency, with isolation exceeding 80 dB below 100 MHz and relatively high coupling values of 40 dB or more at upper S-band frequencies, depending on the geometries and mitigation strategy used. Magnetic coupling was found to be a strong function of circuit separation and the height of metal shields above the circuits. Finally, bond pads utilizing substrate contact guard-rings resulted in the highest degree of isolation and the lowest pad load capacitance of the methods tested.