Дисертації з теми "Spectral Patterns"
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Römer, Christoph [Verfasser]. "Identification of Relevant Patterns in Spectral Signatures / Christoph Römer." Bonn : Universitäts- und Landesbibliothek Bonn, 2016. http://d-nb.info/1095099116/34.
Повний текст джерелаBennett, Leslie L. "Associations between linguapalatal contact patterns and spectral moments for /s/ /." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd2793.pdf.
Повний текст джерелаBennett, Leslie Leatham. "Associations Between Linguapalatal Contact Patterns and Spectral Moments for /s/." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1668.
Повний текст джерелаNimmer, Max [Verfasser]. "Spectral Imaging Based on 2D Diffraction Patterns and Robust Principal Component Analysis / Max Nimmer." München : Verlag Dr. Hut, 2019. http://d-nb.info/119641436X/34.
Повний текст джерелаTraub, Janet. "Patterns in the Variation of CDOM Spectral Slopes in the Western Lake Erie Basin." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1352917941.
Повний текст джерелаMarshall, Benjamin James. "The Correlation between Spectral Moment Measures and Electropalatographic Contact Patterns for /s/ and /ʃ/". BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3231.
Повний текст джерелаBarrett, Janelle. "The Correlation Between Spectral Moment Measures and Electropalatometric Contact Patterns for /t/ and /k/." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3304.
Повний текст джерелаZuurmond, Gideon Joubert. "Accurate camera position determination by means of moiré pattern analysis." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96862.
Повний текст джерелаEnglish abstract: We introduce a method for determining the position of a camera with accuracy beyond that which is obtainable through conventional methods, using a single image of a specially constructed calibration object. This is achieved by analysing the moiré pattern that emerges when two high spatial frequency patterns are superimposed, such that one pattern on a plane is observed through another pattern on a second, semi-transparent parallel plane, with the geometry of both the patterns and the planes known. Such an object can be created by suspending printed glass over printed paper or by suspending printed glass over a high resolution video display such as an OLED display or LCD. We show how the camera’s coordinate along the axis perpendicular to the planes can be estimated directly from frequency analysis of the moiré pattern relative to a set of guide points in one of the planes. This method does not require any prior camera knowledge. We further show how the choice of the patterns allows, within limits, arbitrary accuracy of this coordinate estimate at the cost of a stricter limit on the span along that coordinate for which the technique is usable. This improved accuracy is illustrated in simulation. With a sufficiently accurate estimate of the camera’s full set of 3D coordinates, obtained by conventional methods, we show how phase analysis of the moiré pattern in relation to the guides allows calculation of a new estimate of position in the two axes parallel to the planes. This new estimate is shown in simulation to offer significant improvement in accuracy.
Afrikaanse opsoming: Ons stel ’n metode bekend om die posisie van ’n kamera te bepaal met akkuuraatheid bo dit wat verkrygbaar is uit konvensionele metodes, deur gebruik te maak van ’n spesiaal gekonstrueerde kalibrasievoorwerp. Die metode berus op analise van moiré patrone wat onstaan waneer twee hoë ruimtelike frekwensie patrone oor mekaar neergelê word deurdat een patroon op ’n plat vlak waargeneem word deur ’n tweede patroon op ’n parallelle, gedeeltelik deursigtige vlak, met die geometrie van beide patrone en vlakke bekend. So ’n voorwerp kan geskep word deur ’n spesiaal gedrukte glas vlak te monteer oor gedrukte papier of oor ’n hoë resolusie skerm, soos ’n OLED skermof LCD. Onswys hoe die kamera se koördinaat langs die as loodreg op die vlakke direk uit frekwensie analise van die moiré patroon relatief tot ’n stel gidspunte in een van die vlakke bepaal kan word. Hierdie metode vereis geen vooraf kennis oor die kamera nie. Ons wys verder hoe die keuse van patrone, binne perke, arbitrêre akkuuraatheid in die bepaling van hierdie koördinaat kan verkry ten koste van ’n nouer bruikbare verstek in hierdie koördinaat. Die verbeterde akkuuraatheid is geïllustreer in simulasie. Indien ’n benadering van die kamera se volle stel 3D koördinate met voldoende akkuuraatheid ook beskikbaar is, wys ons ook hoe fase analise van die moiré patroon relatief tot die gidspunte ons in staat stel om’n nuwe benadering te kanmaak vir die koördinate in die twee asse parallel aan die vlakke. Daar word in simulasie getoon hoe hierdie nuwe benadering beduidend beter akkuuraatheid kan bied in vergelyking met konvensionele metodes van benadering.
Carrasco, Hernandez Roberto. "Calculation of patterns of solar radiation within urban geometries." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/calculation-of-patterns-of-solar-radiation-within-urban-geometries(5ac30e2c-0713-4217-8680-a2035d982710).html.
Повний текст джерелаZheng, Feng. "Using spectral reflection and multi-dye layer pixel values to quantify soil patterns for assessing field fertility conditions." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26212.
Повний текст джерелаLand and Food Systems, Faculty of
Graduate
Castillo, Guevara Ramon D. "Coordination of Local and Global Features: Fractal Patterns in a Categorization Task." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1321372828.
Повний текст джерелаDorai-Raj, Sundardas Samuel. "First- and Second-Order Properties of Spatiotemporal Point Patterns in the Space-Time and Frequency Domains." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/28540.
Повний текст джерелаPh. D.
Zhong, Shiyin. "Electricity Load Modeling in Frequency Domain." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/75109.
Повний текст джерелаPh. D.
Dodson, Zoey. "Linking glacial erosion and rock type via spectral roughness and spatial patterns of fractures on glaciated bedrock in the Teton Range, Wyoming, USA." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1539080658075619.
Повний текст джерелаThorsen, Linda. "The clinical application of QEEG : A pilot study of spectral and ERP deviant patterns in children in a special psychiatric unit: An exploratory multiple case report." Thesis, Norges teknisk-naturvitenskapelige universitet, Psykologisk institutt, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14740.
Повний текст джерелаEl, Ghawalby Heyayda. "Spectral geometry for structural pattern recognition." Thesis, University of York, 2011. http://etheses.whiterose.ac.uk/1525/.
Повний текст джерелаMiti, Filippo. "Mathematical models for cellular aggregation: the chemotactic instability and clustering formation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12020/.
Повний текст джерелаYielding, Amy Ann. "Spectrally arbitrary zero-nonzero patterns." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Spring2009/a_yielding_043009.pdf.
Повний текст джерелаAven, Matthew. "Daily Traffic Flow Pattern Recognition by Spectral Clustering." Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/cmc_theses/1597.
Повний текст джерелаDemir, Nilay Sezin. "Spectrally Arbitrary and Inertially Arbitrary Sign Pattern Matrices." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/math_theses/26.
Повний текст джерелаEl-Helw, Amr M. "Pattern classification using spread spectrum." Thesis, Staffordshire University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479162.
Повний текст джерелаKaphle, Krishna. "Spectrally Arbitrary Tree Sign Pattern Matrices." Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/math_theses/17.
Повний текст джерелаWood, Christiaan. "An investigation into multi-spectral tracking." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/1319.
Повний текст джерелаAcar, Erman. "Classification Of Motor Imagery Tasks In Eeg Signal And Its Application To A Brain-computer Interface For Controlling Assistive Environmental Devices." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612994/index.pdf.
Повний текст джерелаCommon Spatial Pattern (CSP), Power Spectral Density (PSD), and Principal Component Analysis (PCA) are tested. Linear Feature Normalization (LFN), Gaussian Feature Normalization (GFN), and Unit-norm Feature Vector Normalization (UFVN) are studied in Support Vector Machine (SVM) and Artificial Neural Network (ANN) classification. In order to evaluate and compare the performance of the methodologies, classification accuracy, Cohen&rsquo
s kappa coefficient, and Nykopp&rsquo
s information transfer are utilized. The first experiments on classifying motor imagery tasks are realized on the 3-class dataset (V) provided for BCI Competition III. Also, a 4-class problem is studied using the dataset (IIa) provided for BCI Competition IV. Then, 5 different tasks are studied in the METU Brain Research Laboratory to find the optimum number and type of tasks to control a motor imagery based BCI. Thereafter, an interface is designed for the paralyzed to control assistive environmental devices. Finally, a test application is implemented and online performance of the design is evaluated.
Eastwood, James Andrew. "The effect of canopy chlorosis distributions on vegetation spectral signatures." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240296.
Повний текст джерелаShao, Yuan. "Higher order spectra invariants for shape pattern recognition." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1179949998.
Повний текст джерелаTate, Anne Rosemary. "Pattern recognition analysis of in vivo magnetic resonance spectra." Thesis, University of Sussex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307732.
Повний текст джерелаWu, Di. "A Global Spatial Model for Loop Pattern Fingerprints and Its Spectral Analysis." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538788/.
Повний текст джерелаMEIJA, JURIS. "INTERPRETATION OF MASS SPECTRA FOR ELEMENTAL SPECIATION STUDIES." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1116247516.
Повний текст джерелаFischer, Manfred M., and Petra Staufer-Steinnocher. "Spectral Pattern Recognition by a Two-Layer Perceptron: Effects of Training Set Size." WU Vienna University of Economics and Business, 1996. http://epub.wu.ac.at/4160/1/WSG_DP_5596.pdf.
Повний текст джерелаSeries: Discussion Papers of the Institute for Economic Geography and GIScience
Hosseini-Yazdi, Ahmad Reza. "Spectral pattern analysis and modelling applied to the cardio-respiratory development of neonates." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47112.
Повний текст джерелаLavidas, George. "Wave energy resource modelling and energy pattern identification using a spectral wave model." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25506.
Повний текст джерелаSo, Wai-on Ann, and 蘇惠安. "Patterns of cognitive functioning in young children with autism spectrum disorders." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/209529.
Повний текст джерелаpublished_or_final_version
Educational Psychology
Master
Master of Social Sciences
Fischer, Manfred M., and Sucharita Gopal. "Spectral Pattern Recognition and Fuzzy ARTMAP Classification: Design Features, System Dynamics and Real World Simulations." WU Vienna University of Economics and Business, 1996. http://epub.wu.ac.at/4163/1/WSG_DP_5296.pdf.
Повний текст джерелаSeries: Discussion Papers of the Institute for Economic Geography and GIScience
Clarke, Paula Joanne. "Patterns of memory asset and deficit in children with autism spectrum disorders." Thesis, University of York, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423751.
Повний текст джерелаLee, Yuen Yue Barbara. "A robust pattern recognition methodology for differential discrimination of magnetic resonance spectra." Thesis, Liverpool John Moores University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394229.
Повний текст джерелаStaufer-Steinnocher, Petra, and Manfred M. Fischer. "A Neural Network Classifier for Spectral Pattern Recognition. On-Line versus Off-Line Backpropagation Training." WU Vienna University of Economics and Business, 1997. http://epub.wu.ac.at/4152/1/WSG_DP_6097.pdf.
Повний текст джерелаSeries: Discussion Papers of the Institute for Economic Geography and GIScience
Barbier, Nicolas Serge. "Interactions spatiales et auto-organisation des végétations semi-arides." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210779.
Повний текст джерелаNos recherches ont été menées au sud-ouest de la République du Niger, à l’intérieur et dans les environs du parc Régional du W. Trois axes ont été explorés :(i) Une étude de la dépendance spatiale entre la structure de la végétation (biovolumes cartographiés) et les paramètres du milieu abiotique (relief, sol), sur base d’analyses spectrales et cross-spectrales par transformée de Fourier (1D et 2D). (ii) Une étude diachronique (1956, 1975 et 1996) à large échelle (3000 km²) de l’influence de l’aridité et des pressions d’origine anthropique sur l’auto-organisation des végétations périodiques, basée sur la caractérisation de la structure spatiale des paysages sur photos aériennes via la transformée de Fourier en 2D. (iii) Trois études portant sur les interactions spatiales entre individus :En premier lieu, via l’excavation des systèmes racinaires (air pulsé) ;Ensuite, par un suivi spatio-temporel du bilan hydrique du sol (blocs de gypse) ;Enfin, via le marquage de la ressource par du deutérium.
Nous avons ainsi pu établir que les végétations périodiques constituent bien un mode d’auto-organisation pouvant survenir sur substrat homogène et modulé par les contraintes climatiques et anthropiques. Un ajustement rapide entre l’organisation des végétations périodiques et le climat a pu être montrée en zone protégée. La superficie et l’organisation des végétations périodiques y ont tour à tour progressé et régressé en fonction d’épisodes secs ou humides. Par contre, en dehors de l’aire protégée, la possibilité d’une restauration du couvert semble fortement liée au taux d’exploitation des ressources végétales. Ces résultats ont d’importantes implications quant à la compréhension des interactions entre climat et écosystèmes et à l’évaluation de leurs capacités de charge. La caractérisation de la structure spatiale des végétations arides, notamment par la transformée de Fourier d’images HR, devrait être généralisée comme outil de monitoring de l’état de ces écosystèmes. Nos études portant sur les modes d’interactions spatiales ont permis de confirmer l’existence d’une facilitation à courte portée du couvert végétal sur la ressource. Cependant, cette facilitation ne semble pas s’exercer sur le terme du bilan hydrique traditionnellement avancé, à savoir l’infiltration, mais plutôt sur le taux d’évaporation (deux fois moindre à l’ombre des canopées). Ce mécanisme exclut l’existence de transferts diffusifs souterrains entre sols nu et fourrés. Des transferts inverses semblent d’ailleurs montrés par le marquage isotopique. L’étude du bilan hydrique et la cartographie du micro-relief, ainsi que la profondeur fortement réduite de la zone d’exploitation racinaire, jettent de sérieux doutes quant au rôle communément admis des transferts d’eau par ruissellement/diffusion de surface en tant que processus clé dans la compétition à distance entre les plantes. L’alternative réside dans l’existence d’une compétition racinaire de portée supérieure aux canopées. Cette hypothèse trouve une confirmation tant par les rhizosphères excavées, superficielles et étendues, que dans le marquage isotopique, montrant des contaminations d’arbustes situés à plus de 15 m de la zone d’apport. De même, l’étude du bilan hydrique met en évidence les influences simultanées et contradictoires (facilitation/compétition) des ligneux sur l’évapotranspiration.
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This PhD thesis gathers results of a research dealing with the causes of the spatial organisation of periodic vegetations. These landscape structures, featuring regular spotted, labyrinthine or banded patterns of decametric to hectometric scale, and extending over considerable areas on at least three continents, constitute a perfect study case to approach endogenous processes leading to vegetation heterogeneities. These patterns occur over homogeneous substratum, except for vegetation’s own feedbacks, and are marked by sharp ecotones and the persistence of a considerable amount of bare soil. A number of models suggested a possible case of self-organized patterning, in which the general structure would emerge from local interactions between individuals. Those models rest on the interplay of competitive and facilitative effects, relating to soil water consumption and to soil water budget enhancement by vegetation. A general necessary condition for pattern formation to occur is that negative interactions (competition) have a larger range than positive interactions (facilitation). Moreover, all models agree with the idea that patterning occurs when vegetation growth decreases, for instance as a result of reduced water availability, domestic grazing or wood cutting, therefore viewing patterns as a self-organised response to environmental constraints. However the modus operandi of the spatial interactions between individual plants remains largely to be specified.
We carried out a field research in South-West Niger, within and around the W Regional Park. Three research lines were explored: (i) The study of the spatial dependency between the vegetation pattern (mapped biovolumes) and the factors of the abiotic environment (soil, relief), on the basis of spectral and cross-spectral analyses with Fourier transform (1D and 2D). (ii) A broad scale diachronic study (1956, 1975, 1996) of the influence of aridity and human induced pressures on the vegetation self-patterning, based on the characterisation of patterns on high resolution remote sensing data via 2D Fourier transform. (iii) Three different approaches of the spatial interactions between individuals: via root systems excavation with pulsed air; via the monitoring in space and time of the soil water budget (gypsum blocks method); and via water resource labelling with deuterated water.
We could establish that periodic vegetations are indeed the result of a self-organisation process, occurring in homogeneous substratum conditions and modulated by climate and human constraints. A rapid adjustment between vegetation patterning and climate could be observed in protected zones. The area and patterning of the periodic vegetations successively progressed and regressed, following drier or wetter climate conditions. On the other hand, outside protected areas, the restoration ability of vegetation appeared to depend on the degree of vegetation resource exploitation. These results have important implications regarding the study of vegetation-climate interactions and the evaluation of ecosystems’ carrying capacities. Spatial pattern characterisation in arid vegetations using Fourier transform of HR remote sensing data should be generalised for the monitoring of those ecosystems. Our studies dealing with spatial interaction mechanisms confirmed the existence of a short range facilitation of the cover on water resource. However, this facilitation does not seem to act through the commonly accepted infiltration component, but rather on the evaporative rate (twice less within thickets). This mechanism excludes underground diffusive transfers between bare ground and vegetation. Inverse transfers were even shown by deuterium labelling. Water budget study and micro-elevation mapping, along with consistent soil shallowness, together cast serious doubts on the traditional mechanism of run-off/diffusion of surface water as a key process of the long range competition between plants. An alternative explanation lies in long range root competition. This hypothesis find support as well in the excavated root systems, shallow and wide, as in isotopic labelling, showing contaminations of shrubs located up to 15 m of the irrigated area. Water budget study also evidenced simultaneous contradictory effects (facilitation/competition) of shrubs on evapotranspiration.
Doctorat en sciences agronomiques et ingénierie biologique
info:eu-repo/semantics/nonPublished
Ladroue, Christophe Ludovic Claude. "Pattern recognition techniques for the study of magnetic resonance spectra of brain tumours." Thesis, St George's, University of London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415201.
Повний текст джерелаKirchner, William Thomas. "Ultrasonic acoustic health monitoring of ball bearings using neural network pattern classification of power spectral density." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/36130.
Повний текст джерелаMaster of Science
El-Deredy, Wael. "Artificial neural networks in pattern recognition : classification and analysis of proton NMR spectra of human brain tumours." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300151.
Повний текст джерелаBaccherini, Simona. "Pattern recognition methods for EMG prosthetic control." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12033/.
Повний текст джерелаDanylov, A. B. "Reflection Spectra Simulation for Flat and Patterned Surfaces of CdTe Solar Elements." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42713.
Повний текст джерелаStoyanova, Radka. "Development and application of methods for enhancing features in NMR spectra for pattern recognition." Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/8269.
Повний текст джерелаHuang, Yingying. "DATA MINING OF PEPTIDE MS/MS SPECTRA TO ELUCIDATE GAS-PHASE PEPTIDE DISSOCIATION MECHANISMS AND IMPROVE PROTEIN IDENTIFICATION." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1133%5F1%5Fm.pdf&type=application/pdf.
Повний текст джерелаOduwole, Elizabeth O. "Generation of a database of mass spectra patterns of selected Mycobacterium species using MALDI-ToF mass spectrometry." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/2838.
Повний текст джерелаThe genus Mycobacterium is a group of acid–fast, aerobic, slow- growing organisms which include more than 90 different species. A member of this genus, Mycobacterium tuberculosis, belonging to the Mycobacterium tuberculosis complex (MTB), is the causative agent of tuberculosis (TB). This disease is currently considered a global emergency, with more than 2 million deaths and over 8 million new cases annually. TB is the world’s second most common cause of death after HIV/AIDS. About one-third of the world’s population is estimated to be infected with TB. This catastrophic situation is further compounded by the emergence of Multi Drug Resistant tuberculosis (MDR-TB) and in more recent times, Extensive Drug Resistant tuberculosis (XDR-TB). Early diagnosis is critical to the successful management of patients as it allows informed use of chemotherapy. Also, early diagnosis is also of great importance if the menace of MDR-TB and XDR-TB is to be curbed and controlled. As MTB is highly infectious for humans, it is of paramount importance that TB be diagnosed as early as possible to stop the spread of the disease. Traditional conventional laboratory procedures involving microscopy, culture and sensitivity tests may require turnaround times of 3-4 weeks or longer. Tremendous technological advancement over the years such as the advent of automated liquid culture systems like the BACTEC® 960 and the MGITTM Tube system, and the development of a myriad of molecular techniques most of which involves nucleic acid amplification (NAA) for the rapid identification of mycobacterial isolates from cultures or even directly from clinical specimens have contributed immensely to the early diagnosis of tuberculosis. Most of these NAA tests are nevertheless fraught with various limitations, thus the search for a rapid, sensitive and specific way of diagnosing tuberculosis is still an active area of research. The search has expanded to areas that would otherwise not have been considered ‘conventional’ in diagnostic mycobacteriology. One of such areas is mass spectrometry. This study joins the relatively few studies of its kind encountered in available literature to establish the ground work for the application of mass spectrometry, specifically Matrix Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-ToF MS) in the field of diagnostic mycobacteriology. This is an area which is in need of the speed, sensitivity and specificity that MALDI-ToF technique promises to offer. Since this technology is still in its infancy, the use of utmost care in the preparation of reagents, and the handling and storage of the organisms used to generate reference mass spectra for the database cannot be overemphasized. Similarly, the optimization of certain crucial experimental factors such as inactivating method and choice of matrix is of paramount importance. The main aim of this thesis was to generate a database of reference mass spectra fingerprints of selected (repository) Mycobacterium species. This necessitated the standardization of an experimental protocol which ensured that experimental factors and the various instrument parameters were optimized for maximum spectra generation and reproducibility. A standard operating procedure (SOP) for generating the database of reference mass spectra finger print of selected Mycobacterium species was developed and used to investigate the ability of the database to differentiate between species belonging to the same clinical disease complex as well as the nontuberculosis complex. The findings of this study imply that if the defined protocol is followed, the database generated has the potential to routinely identify and differentiate (under experimental conditions) more species of Mycobacterium than is currently practical using PCR and its related techniques. It is therefore a realistic expectation that when the database is clinically validated and tested in the next phase of the study, it will contribute immensely to the diagnosis of tuberculosis and other mycobacterioses. It will also aid in the identification of emerging pathogens particularly amongst the non-tuberculous mycobacteria.
Ward, Jessica. "Evaluating patterns of spared and enhanced processing within the music domain in autism spectrum disorders." Thesis, Goldsmiths College (University of London), 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514390.
Повний текст джерелаCrabtree, Lisa. "Social participation patterns and preferences : a mixed methods study of children on the autism spectrum." Diss., NSUWorks, 2009. https://nsuworks.nova.edu/hpd_ot_student_dissertations/14.
Повний текст джерелаCondette, Nicolas. "Pattern formation in magnetic thin films." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2011. http://dx.doi.org/10.18452/16336.
Повний текст джерелаThis thesis is concerned with the study of a class of variational problems arising in the context of ferromagnetism. More precisely, it aims at providing a numerical and analytical background to the study of hard magnetic thin films with perpendicular anisotropy. Magnetic thin films are sheets of magnetic materials with thicknesses of a few micrometers down to a few nanometers used mainly in electronic industry, for example as magnetic data storage media for computers. Our initial considerations are based on a model of Landau and Lifshitz that associates the ground states of the magnetization within a three-dimensional body to the minimizers of a nonconvex and nonlocal energy functional, the so-called micromagnetic energy. Under film thickness considerations (thin film regime), we first reduce the aforementioned model to two dimensions and then carry out a Gamma-limit for a sharp-interface model. The resulting energy functional features a competition between an interfacial and a dipolar energy contribution. The second part of the thesis is concerned with the analysis of a numerical method to approximate solutions of the previously derived sharp-interface model. We base our considerations on a relaxed model in which we replace the interfacial energy contribution by its Modica-Mortola approximation, and then study the associated L^2 gradient flow. The resulting evolution equation, a nonlinear and nonlocal parabolic equation, is discretized by a Crank-Nicolson approximation for the time variable and a Fourier collocation method for the space variable. We prove the existence and uniqueness of the solutions of the numerical scheme, the convergence of these solutions towards solutions of the initial continuous model and also derive a-priori error estimates for the numerical method. Finally, we illustrate the analytical results by a series of numerical experiments.
Opstad, Kirstie Suzanne. "Quantification and pattern recognition of ¹H magnetic resonance brain tumour spectra for automated classification." Thesis, St George's, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413702.
Повний текст джерела