Dissertations / Theses on the topic 'Disordered'
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Mrowicki, Anna. "Disordered eating in gastrointestinal disorders." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/88064/.
Full textArnold, Marla N. "Validating a model of risk factors associated with eating disorder risk in adolescents." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1148575712.
Full textNewton, Angus William. "Charge transfer and disorder broadening in disordered transition metal alloys." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343931.
Full textEavy, Geoffrey B. J. "Construing disordered minds as disordered brains : an alternative approach to mental pathology." Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416904.
Full textChung, Marilyn. "DISORDERED EATING AMONG NONBINARY INDIVIDUALS." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/dissertations/1876.
Full textVispa, Alessandro. "Dynamics of disordered systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/404444.
Full textLos sistemas desordenados son ubicuos en la naturaleza y su estudio es complicado y con frecuencia conduce a resultados controvertidos. En cualquier caso, el papel importante de este tipo de sistemas en aplicaciones científicas y tecnológicas no debe ser ignorada. Las propiedades características de tales sistemas parecen estar impulsadas por una característica fundamental, los grados de libertad. Aunque muchos problemas siguen siendo materia de debate, el desafío planteado en las últimas décadas en el entendimiento del impacto del desorden en el comportamiento físico de los materiales es de considerable interés científico. Una descripción exacta de una fase desordenada no es posible, ya que es un problema de muchos cuerpos difícil de modelar. Sin embargo, para algunos materiales, es posible, tras el enfriamiento, conservar la estructura desordenada del líquido con un estado de alta regularidad. Por lo tanto, para los denominados glass-formers, es posible congelar algunos grados de libertad obteniendo un vidrio que presenta la irregularidad de un líquido con la alta viscosidad de un sólido por debajo de la temperatura de fusión Tm. El objetivo de la presente tesis doctoral es presentar nuestra comprensión del desorden en los enfoques experimentales relacionados utilizando tres diferentes compuestos puros: dos cristales de plástico (1-Chloroadamantane y Freon113) y un líquido (Glycerol). Para entender el comportamiento de este tipo de materiales se han utilizado scattering de neutrones y espectroscopía dieléctrica. Estas dos técnicas nos permiten investigar la dinámica de las fases desordenadas en una escala de tiempo de picosegundos. Por otra parte, dada la complejidad de estas fases desordenadas, análisis de datos y la selección del modelo se han realizado con un enfoque bayesiano que proporciona una sólida base estadística basada sobre las funciones de distribución de probabilidad. Tales métodos se han aplicado al estudio de la dinámica de los compuestos antes mencionados con el fin de dar una explicación de algunas preguntas abiertas: el origen microscópico de la transición plástico-plástico en 1-chloroadamantane (C10H15Cl), la alta fragilidad y la correlación entre la fragilidad cinética y termodinámica en freon113 (Cl2FC-CClF2) y la dinámica, acompañada por una robusta selección de modelo, de uno de los compuestos más estudiados, glycerol (C3H8O3). Los resultados, presentados en este trabajo de tesis, representan un pequeño paso para una comprensión más profunda de la dinámica de las fases desordenadas, dando una base para futuras investigaciones.
Gorokhov, Denis A. "Dynamics of disordered systems /." [S.l.] : [s.n.], 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13070.
Full textPeil, Oleg E. "Theory of Disordered Magnets." Doctoral thesis, Uppsala universitet, Institutionen för fysik och materialvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9528.
Full textWicks, James David. "Studies of disordered materials." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359538.
Full textAstell, Arlene Jean. "Disordered speech in dementia." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/3992/.
Full textFricke, Niklas, Sebastian Sturm, Marc Lämmel, Sebastian Schöbl, Klaus Kroy, and Wolfhard Janke. "Polymers in disordered environments." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-198948.
Full textButler, Paul. "Characterisation of disordered structures." Thesis, University of Kent, 2017. https://kar.kent.ac.uk/62479/.
Full textFricke, Niklas, Sebastian Sturm, Marc Lämmel, Sebastian Schöbl, Klaus Kroy, and Wolfhard Janke. "Polymers in disordered environments." Diffusion fundamentals 23 (2015) 7, S. 1-12, 2015. https://ul.qucosa.de/id/qucosa%3A14586.
Full textMidic, Uros. "Genome-Wide Prediction of Intrinsic Disorder; Sequence Alignment of Intrinsically Disordered Proteins." Diss., Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/159800.
Full textPh.D.
Intrinsic disorder (ID) is defined as a lack of stable tertiary and/or secondary structure under physiological conditions in vitro. Intrinsically disordered proteins (IDPs) are highly abundant in nature. IDPs possess a number of crucial biological functions, being involved in regulation, recognition, signaling and control, e.g. their functional repertoire complements the functions of ordered proteins. Intrinsically disordered regions (IDRs) of IDPs have a different amino-acid composition than structured regions and proteins. This fact has been exploited for development of predictors of ID; the best predictors currently achieve around 80% per-residue accuracy. Earlier studies revealed that some IDPs are associated with various human diseases, including cancer, cardiovascular disease, amyloidoses, neurodegenerative diseases, diabetes and others. We developed a methodology for prediction and analysis of abundance of intrinsic disorder on the genome scale, which combines data from various gene and protein databases, and utilizes several ID prediction tools. We used this methodology to perform a large-scale computational analysis of the abundance of (predicted) ID in transcripts of various classes of disease-related genes. We further analyzed the relationships between ID and the occurrence of alternative splicing and Molecular Recognition Features (MoRFs) in human disease classes. An important, never before addressed issue with such genome-wide applications of ID predictors is that - for less-studied organisms - in addition to the experimentally confirmed protein sequences, there is a large number of putative sequences, which have been predicted with automated annotation procedures and lack experimental confirmation. In the human genome, these predicted sequences have significantly higher predicted disorder content. I investigated a hypothesis that this discrepancy is not correct, and that it is due to incorrectly annotated parts of the putative protein sequences that exhibit some similarities to confirmed IDRs, which lead to high predicted ID content. I developed a procedure to create synthetic nonsense peptide sequences by translation of non-coding regions of genomic sequences and translation of coding regions with incorrect codon alignment. I further trained several classifiers to discriminate between confirmed sequences and synthetic nonsense sequences, and used these predictors to estimate the abundance of incorrectly annotated regions in putative sequences, as well as to explore the link between such regions and intrinsic disorder. Sequence alignment is an essential tool in modern bioinformatics. Substitution matrices - such as the BLOSUM family - contain 20x20 parameters which are related to the evolutionary rates of amino acid substitutions. I explored various strategies for extension of sequence alignment to utilize the (predicted) disorder/structure information about the sequences being aligned. These strategies employ an extended 40 symbol alphabet which contains 20 symbols for amino acids in ordered regions and 20 symbols for amino acids in IDRs, as well as expanded 40x40 and 40x20 matrices. The new matrices exhibit significant and substantial differences in the substitution scores for IDRs and structured regions. Tests on a reference dataset show that 40x40 matrices perform worse than the standard 20x20 matrices, while 40x20 matrices - used in a scenario where ID is predicted for a query sequence but not for the target sequences - have at least comparable performance. However, I also demonstrate that the variations in performance between 20x20 and 20x40 matrices are insignificant compared to the variation in obtained matrices that occurs when the underlying algorithm for calculation of substitution matrices is changed.
Temple University--Theses
Mason, Suzanne M. "Body size and shape perception in eating disordered and non-eating disordered women." Thesis, University of Newcastle Upon Tyne, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493088.
Full textRomanini, Michela. "Relaxation dynamics in disordered systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/317384.
Full textLa naturaleza de la transición vítrea es un problema fundamental y aún no resuelto de la física de la materia condensada. Muchos líquidos pueden ser superenfriados por debajo de su temperatura de fusión sin que cristalicen, es decir, sin que adquieran orden traslacional y orientacional. Cuando la temperatura de un líquido superenfriado baja, el tiempo característico de los movimientos moleculares, llamado tiempo de relajación, aumenta hasta llegar a tiempos comparables con el tiempo característico de los experimentos y de la observación humana. Esto ocurre a una temperatura llamada temperatura de transición vítrea y lleva a un estado de non-equilibrio del material llamado ¿vidrio estructural¿, en el que la ausencia de orden de largo alcance típica del estado líquido se combina con las propiedades elásticas propias de un sólido ordenado. Las transiciones vítreas se pueden observar también en sistemas caracterizados por desorden exclusivamente orientacional, como en los cristales orientacionalmente desordenados (OD) o cristales plásticos. Estos son sólidos traslacionalmente ordenados en los que las moléculas tienen movimientos de reorientación alrededor de sus centros de masa, que están fijos. Superenfriando un cristal OD se obtiene un ¿vidrio orientacional¿ en el cual este desorden orientacional está congelado. El proceso dinámico más importante que caracteriza los materiales moleculares que forman vidrios estructurales u orientacionales es el movimiento cooperativo de las moléculas conocido como relajación primaria. Su congelamiento marca la transición al estado vítreo caracterizado por un desorden estático. La diferencia principal entre los vidrios orientacionales y estructurales es que en los primeros el congelamiento involucra sólo los grados de libertad de rotación, mientras que en los segundos todos los seis grados de libertad moleculares (orientacionales y traslacionales) están congelados. Por tanto, los vidrios orientacionales son sistemas con menos grados de libertad respecto los vidrios estructurales y pueden considerarse como sistemas modelo para investigar la transición vítrea, ya que además muchas fases OD están caracterizadas por redes cristalinas de alta simetría. Además de la relajación primaria, existen también relajaciones secundarias caracterizadas por tiempos de relajación más cortos con respecto al proceso primario. Estas relajaciones secundarias pueden tener diferentes orígenes: por ejemplo, pueden ser debidas a fluctuaciones de la conformación molecular o a vibraciones de enlaces intramoleculares; en muchos casos se observa una relajación secundaria que es considerada como la precursora del proceso primario (relajación Johari-Goldstein). Esta tesis está enfocada en el estudio de los efectos de la presión y de la temperatura sobre la dinámica de algunos compuestos puros y mezclas binarias, los cuales forman vidrios estructurales u orientacionales. Se presenta un estudio comparativo entre dos vidrios estructurales (ternidazole y la mezcla de m-fluoroanilina con m-xileno), un cristal plástico binario (formado por neopenthyl alcohol y neopentyl glycol), y dos materiales que presentan desorden estadístico (2-adamantanona y pentacloronitrobenceno). En todos los casos se observa una relajación primaria asociada a los movimientos colectivos de las moléculas y en la mayoría de los casos se observa también relajaciones secundarias. Para cada material se analiza la dependencia de diferentes relajaciones con la temperatura y con la presión y se discute el origen de los procesos secundarios. Uno de los resultados importantes de la tesis es que en sistemas con desorden de baja dimensionalidad, pueden aparecer relajaciones secundarias que obecen a patrones similares a las encontradas en vidrios estructurales
Martínez, García Julio César. "Dynamics in orientationally disordered solids." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/35856.
Full textLa principal característica de la dinámica de sistemas vítreos viscosos, es su universalidad en la diversidad. Su origen es uno de los mayores desafíos de la física de la materia condensada y de la ingeniería de materiales en el siglo XXI. La fenomenología típica de las fases vítreas se observan cerca de la transición vítrea en líquidos subenfriados de bajo peso molecular, polímeros, fluidos coloidales, así como en los sólidos con fases orientacionalmente desordenadas. La imposibilidad de explicar las causas del gran aumento del tiempo de relajación al enfriar un líquido, constituye uno de los problemas más importantes no resueltos en materia condensada. Con el objetivo de dar respuesta a dicha interrogante, se han propuesto modelos termodinámicos y dinámicos que han resultado inconsistentes. En esta tesis nos centramos en dicha problemática, estudiando la dinámica orientacional de algunos materiales que al ser enfriados pueden conservar un orden traslacional mientras que se conserva el desorden orientacional de las moléculas que los forman. Dichas fases se conocen como fases plásticas u orientacionalmente desordenadas (OD). El trabajo presentado en esta tesis amplía el conocimiento de la dinámica de dichas fases, un tema de investigación cuyo interés ha aumentado durante las últimas décadas. Se ha dedicado una atención especial a las ecuaciones fenomenológicas que describen la dependencia del tiempo de relajación con la temperatura. El estudio se ha llevado a cabo mediante el uso de espectroscopía dieléctrica de banda ancha, así como mediante el uso de técnicas experimentales complementarias. Se ha introducido un nuevo método para el estudio de la dinámica de los sistemas que dan lugar a fases vítreas. El método ha sido validado y discutido. Los resultados de esta tesis se presentan divididos en dos temas, por un lado, la dinámica de compuestos puros y de los cristales mixtos y, por otro, el análisis mediante el método derivativo aplicado a los diferentes modelos físicos existentes. En el primer tema nos centramos en la dinámica de los compuestos puros y los cristales mixtos formados por cicloheptanol y ciclooctanol, así como la dinámica de la relajación alfa en 1-ciano-adamantano y sus mezclas con 1-cloro-adamantano. El segundo tema se divide en dos grupos de modelos, los modelos lineales y no lineales. En los modelos lineales se muestra la aplicación del procedimiento de derivativo en los cristales líquidos (CL) y las fases OD. También se discuten los resultados relativos a los casos de la resina líquida (EPON828), la mezcla neopentil-alcohol y neopentil-glicol, el carbonato de propileno, así como el CL isooctilcianobifenil. Se discute también la existencia de posibles correlaciones empíricas entre uno de los modelos lineales con el patrón universal para la parte de alta frecuencia de la curva de pérdidas dieléctricas de la relajación primaria para las fases CL y OD. En la parte final se muestra que la forma de la ecuación introducida recientemente por Mauro et al. no permite la linearización mediante el método derivativo. A diferencia de los modelos anteriores, los diferentes parámetros no están correlacionados con la pendiente y el origen de coordenadas de una función lineal. Para resolver este problema, hemos introducido el concepto del espacio entálpico. Se analiza también la existencia de cambios de comportamiento dinámicos y se aportan descripciones cuantitativas. Se muestra también un nuevo procedimiento para detectar los cambios dinámicos de una manera fácil, que permite incluso detectar aquéllos que son obviados mediante el método clásico de Stickel.
Wong, Eric Tsz Chung. "Electrostatics in intrinsically disordered proteins." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43451.
Full textHuxley, David W. "Diffraction studies of disordered materials." Thesis, University of Kent, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293796.
Full textRodgers, Geoffrey John. "Topics in disordered systems theory." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329087.
Full textFawcett, Ian D. "Structural studies of disordered molybdates." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320188.
Full textSobiesierski, Z. "Optical spectroscopy of disordered systems." Thesis, University of Exeter, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374944.
Full textNahm, In Hyun. "Two dimensional disordered electron systems." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330179.
Full textMazarakis, Theodore. "Psychological dimensions of disordered sleep." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420923.
Full textKaisari, Panagiota. "Neurocognitive processes in disordered eating." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8271/.
Full textKissel, Glen James. "Localization in disordered periodic structures." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/34990.
Full textPinski, Sebastian. "Phonons in disordered harmonic lattices." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/57512/.
Full textKerr, Hannah Elin. "NMR crystallography of disordered cocrystals." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12037/.
Full textBosisio, Riccardo. "Thermoelectric conversion in disordered nanowires." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066212/document.
Full textThis thesis is focused on thermoelectric conversion in disordered semiconductor nanowires in the field effect transistor configuration. We first consider a low temperature regime, when electronic transport is elastic. For a 1D Anderson model, we derive analytical expressions describing the typical thermopower of a single nanowire as a function of the applied gate voltage, and we show that it is largely enhanced at the nanowire band edges. Our results are confirmed by numerical simulations based on a Recursive Green Function calculation of the thermopower. We then consider the case of inelastic transport, achieved by phonon-assisted hopping among localized states (Variable Range Hopping). By solving numerically the Miller Abrahams random resistor network, we show that the thermopower can attain huge values when the nanowire band edges are probed. A percolation theory by Zvyagin extended to nanowires allows to qualitatively describe our results. Also, the mechanism of heat exchange between electrons and phonons at the band edges lead to the generation of hot and cold spots near the boundaries of a substrate. This effect, of interest for cooling issues in microelectronics, is showed for a set of parallel nanowires, a scalable and hence promising system for practical applications. The power factor and figure of merit of the device are also estimated.Finally, we characterize a general three-terminal system within the linear response (Onsager) formalism: we derive local and non-local transport coefficients, as well as generalized figures of merit. The possibility of improving the performance of a generic quantum machine is discussed with the help of two simple examples
Scheffler, Falk. "Spin dynamics in disordered systems." Konstanz Hartung-Gorre, 2006. http://d-nb.info/990499073/04.
Full textRimas, Zilvinas. "Sorption in disordered porous media." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/268094.
Full textWalsh, Karen. "Gender differences in post-traumatic stress disorder and anger in mentally disordered offenders." Thesis, Royal Holloway, University of London, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604563.
Full textDubois, Alizee. "Dynamic cracks in disordered materials : interplay between microstructure disorder, wavefield and overail fracture." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX114.
Full textDynamic crack propagation drives catastrophic material failures. A key aspect in the problem is the stress concentration at the tip of cracks, which makes the failure behavior observed at the macroscopic scale very sensitive to inhomogeneities in the material micro-structure, or, in local loading, down to very small scale. Stress concentration and redistribution of stresses during crack growth, indeed, couple many space and time scales. They stretch from the macroscopic dimension of the sample, L, down to the size of the so-called fracture process zone, which embeds all the dissipative process involved in the creation of new fracture surface area). Elastodynamics and continuum fracture theory a priori provide the relevant tools to describe dynamic crack growth. Still, at high enough speed several instabilities are observed. In brittle polymers like polystyrene or polymethylmethalcrylate (PMMA) for instance, micro-cracking starts occurring in the vicinity of the crack tip, in a zone of length-scale depending on the crack speed and larger than the fracture process zone. The space and time organization of these micro-cracking events evolves with crack speed and can present patterns up to the millimeter scale Since the pioneering work of Gao and Rice, 1986, it has been proposed to model crack propagation in a 3D solid as an elastic line moving through obstacles. The distortion in the crack front, in turn, increases locally the stress intensity factor. Such model gained momentum when the first statistical studies of crack surfaces revealed self-affine features for the roughness. A whole zoology of roughness exponent was measured since then. The elastic line model meet great success in the quasi static crack front modeling.In this context, it is now timely to extend it to dynamic fracture. This may should bring new insight on the dynamic crack problem and the instabilities mentioned above. The main objective of this work is to use a model experiment to study systematically the microscopic and macroscopic properties of a dynamic crack front. This thesis aims at understanding to what extend such a line model is valid experimentally despite the complex environment seen by the crack front due to the micro-cracks of the damage zone and the presence of micro-branches. Along these lines, here is a set of questions to address. Fractography is a promising method to probe the fracture history and to measure the fracture toughness of the material. How could the method evolve to be applicable to dynamic crack surfaces? What would be the available information on the material properties and the crack velocity? Dynamic fracture in PMMA is known to undergo a brittle to quasi brittle transition above a certain critical speed, which is smaller than the micro-branches threshold. What mechanical parameters control the statistical distribution of micro-crack nucleation centers? Dynamic crack instabilities are believed to be a 3D effect, no 2D model could justify them. What is the role of the crack front thickness in their organization and nucleation? In dynamic fracture, instabilities travel along the front, the in plane crack front waves (Morrissey and Rice, 1998) and the out of plane corrugation waves (J.R. Willis, 2012). Can we find, in the behavior of the crack front, some experimental evidences of these front waves? What is their impact on the damage organization?
Lee, Soon-Gul. "Experimental study of the effects of disorder in weakly disordered superconducting aluminum films /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487588939089315.
Full textBrink, Susan Goldswain. "A comparative study of the dream content of eating-disordered and non-eating-disordered women." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30404.
Full textEducation, Faculty of
Educational and Counselling Psychology, and Special Education (ECPS), Department of
Graduate
Marchand, Stephanie Milbradt. "Disordered eating behaviors among collegiate athletes /." View online ; access limited to URI, 2007. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3284826.
Full textNikolaou, Marios. "A Matter of Disorder : Monte Carlo Simulations of Phase Transitions in Strongly Disordered Systems." Doctoral thesis, Stockholm : Royal Institute of Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4313.
Full textKalyani, Tania. "Posttraumatic stress disorder and anger in mentally disordered offenders: does alexithymia mediate this relationship?" Thesis, University of London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589455.
Full textScott, Helen. "Attachment, narcissism and social rank in a group of anger-disordered and non-anger-disordered males." Thesis, University of Birmingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408972.
Full textDuckheim, Mathias. "Electrically controlled spin dynamics disordered semiconductors /." [S.l.] : [s.n.], 2008. http://edoc.unibas.ch/diss/DissB_8756.
Full textSales, Pardo Marta. "Large Scale Excitations in Disordered Systems." Doctoral thesis, Universitat de Barcelona, 2002. http://hdl.handle.net/10803/1786.
Full textThe existence of these large excitations brings about large fluctuations of the order parameter, and we have shown in these theses that this feature can be exploited to study the transition of any spin glass model. Moreover, we have shown that the information about these excitations can be extracted from the statistics of the lowest lying excitations. This is because due to the random nature of spin glasses, the physics obtained from averaging over the whole spectrum of excitations of an infinite sample is equivalent to averaging over many finite systems where only the ground state and the first excitation are considered. The novelty of this approach is that we do not need to make any assumption on what are typical excitations like because we can compute them exactly using numerical methods. Finally, we have investigated the dynamics and more specifically the link between the problem of chaos and the rejuvenation phenomena observed experimentally. Rejuvenation means that when lowering the temperature the aging process restarts again from scratch. This is potentially linked with the chaos assumption which states that equilibrium configurations at two different properties are not correlated. Chaos is a large scale phenomenon possible if entropy fluctuations are large. However, in this thesis we have shown that the response to temperature changes can be large in the absence of chaos close to a localization transition where the Boltzmann weight condenses in a few states. This has been observed in simulation of the Sinai model in which this localization is realized dynamically. In this model, since at low temperatures the system gets trapped in the very deep states, the dynamics is only local, so that only small excitations contribute to the rejuvenation signal that we have been able to observe. Thus, in agreement with the hierarchical picture, rejuvenation is possible even in the absence of chaos and reflects the start of the aging process of small length scales.
Kern, Lydia. "Disordered eating among high school athletes." Connect to resource, 2010. http://hdl.handle.net/1811/45039.
Full textCastellana, Michele. "The renormalization group for disordered systems." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00694469.
Full textMulansky, Mario. "Localization properties of nonlinear disordered lattices." Master's thesis, Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2009/3146/.
Full textIn dieser Arbeit wird das Verhalten nichtlinearer Ketten mit Zufallspotential untersucht. Teil I enthaelt eine Einfuehrung in das Phaenomen der Anderson Lokalisierung, die Diskrete Nichtlineare Schroedinger Gleichung und ihren Eigenschaften sowie die verwendete Verallgemeinerung des Modells durch Einfuehrung eines Nichtlinearitaets-Indizes α. In Teil II wird das Ausbreitungsverhalten von lokalisierten Zustaenden in langen, ungeordneten Ketten durch die Nichtlinearitaet untersucht. Dazu werden zuerst verschiedene Lokalisierungsmaße besprochen und außerdem die strukturelle Entropie als Messgroeße der Peakstruktur eingefuehrt. Im Anschluss wird der Ausbreitungskoeffzient fuer verschiedene Nichtlinearitaets-Indizes bestimmt und mit analytischen Absch¨tzungen verglichen. Teil III behandelt schließlich die Thermalisierung in kurzen, ungeordneten Ketten. Dabei wird zuerst der Begriff Thermalisierung in dem verwendeten Zusammenhang erklaert. Danach erfolgt eine numerische Analyse von Thermalisierungseigenschaften lokalisierter Anfangszustaende, wobei die Energieabhaengigkeit besondere Beachtung genießt. Eine Verbindung mit sogenannten Breathers wird dargelegt.
Dunkley, Cara R. "Disordered eating and sexuality in women." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54755.
Full textArts, Faculty of
Psychology, Department of
Graduate
Alpan, Ali. "Objective assessment of disordered connected speech." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209758.
Full textThe first part of this thesis is devoted to the analysis of disordered connected speech. The aim is to investigate vocal cues that are clinically relevant and correlated with auditory-perceptual ratings. Two approaches are investigated. The variogram-based method in the temporal domain is addressed first. The second approach is in the cepstral domain. In particular, the first rahmonic amplitude is used as an acoustic cue to describe voice quality. A multi-dimensional approach combining temporal and spectral aspects is also investigated. The goal is to check whether acoustic cues in both domains report complementary information when predicting perceptual scores.
Both methods are tested first on a corpus of synthetic sound stimuli that has been obtained by means of a synthesizer of disordered voices. The purpose is to learn about the link between the signal properties (fixed by the synthesis parameters) and acoustic cues.
In this study, we had the opportunity to use two large natural speech corpora. One of them has been perceptually rated.
The final part of the text is devoted to the automatic classification of voice with regard to perceived voice quality. Many studies have proposed a binary (normal/pathological) classification of voice samples. An automatic categorization according to perceived degrees of hoarseness appears, however, to be more attractive to both clinicians and technologists and more likely to be clinically relevant. Indeed, one way to reduce inter-rater variability of an auditory-perceptual evaluation is to ask several experts to participate and then to average the perceptual scores. However, auditory-perceptual evaluation of a corpus by several judges is a very laborious, time-consuming and costly task. Making this perceptual evaluation task automatic is therefore desirable.
The aim of this study is to exploit the support vector machine classifier that has become, over the last years, a popular tool for classification, to carry out categorization of voices according to perceived degrees of hoarseness.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Chen, Leiming. "Tilt phase transitions in disordered systems /." view abstract or download file of text, 2006. http://proquest.umi.com/pqdweb?did=1251884301&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.
Full textTypescript. Includes vita and abstract. Includes bibliographical references (leaves 126-128). Also available for download via the World Wide Web; free to University of Oregon users.
Bush, Ian J. "The electronic structure of disordered materials." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334224.
Full textPapathomas, Anthony. "Disordered Eating in Sport : Narrative's Turn." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9084.
Full textHorrigan, Emma. "Disordered microstructures and anomalous mechanical properties." Thesis, University of Exeter, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496775.
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