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Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 20 lutego 2023

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1

Van, der Schyff Karlien. "Screen bound/skin bound : the politics of embodiment in the posthuman age". Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4139.

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Thesis (MA (English))--University of Stellenbosch, 2010.
ENGLISH ABSTRACT: The end of the second millennium saw a sudden return to corporeality, especially within feminist scholarship, where embodiment and issues surrounding the body were, for the first time, made explicit. This study examines the corporeal body in relation to technology and the impact that newly emerging virtual technologies have on our understanding of the body, not only through examining representations of the technologically modified body, but also by exploring how contemporary cultural practices produce corporeal bodies that view themselves as somehow integrated with technology. It focuses on the material artefacts of contemporary culture in relation to explicitly virtual technologies, both arguing for a return to corporeality and contesting the pervasive trope of disembodiment that characterises so-called “posthuman” age. This study thus takes one of the most popular metaphors for the relationship between the corporeal body and technology as its starting point, namely Donna Haraway’s cyborg figures. Following the publication of Haraway’s “A Manifesto for Cyborgs” (1985), the female cyborg became an icon of emancipation for many feminist scholars, who utilised Haraway’s cyborg discourse as a means of discussing the cultural practices that both construct and limit female gendered identity. Through closely examining the metaphor of Haraway’s cyborg figures in relation to cultural representations of female cyborg bodies, this study argues that, ultimately, the metaphor of the cyborg is inherently neither challenging nor liberating. It then examines the failure of the cyborg as an icon of postgenderedness in terms of its negation of the corporeal, as cyborg figures paradoxically only strengthen the same Cartesian dualism Haraway’s cyborg discourse attempts to deconstruct. It explores representations of three female cyborg figures found in contemporary popular culture to illustrate how the cyborg body’s negation of the corporeal only results in the reiteration of conventional gendered stereotypes, rather than liberation from oppressive gendered practices. Finally, this study examines the crucial interplay between the corporeal and the technological, not only when speaking of more imaginary cyborg configurations and tropes, but also when speaking of the physical reality of lived bodies and embodied experiences. By examining the increasingly embodied nature of cyberspace, this study explores possible alternatives to the figure of the hypersexualised and disembodied cyborg, through investigating new figurations with which to describe the embodied postmodern subject and his/her dependence on technology. Since the central task for a feminist ethics of embodiment would be grounded in the project of representing the female body, in such a way that it constructs autonomous women’s representations without falling prey to patriarchal, stereotypical or estranging images of women’s bodies, this study concludes with more useful methods of representing the corporeal body in relation to virtual technology through an appeal to an ethics of embodiment.
AFRIKAANSE OPSOMMING: Die einde van die tweede millennium het ‘n skielike belangstelling in beliggaamdheid ontlok, veral binne feministiese vakgeleerdheid, waar beliggaamdheid en kwessies rondom die ligaam vir die eerste keer eksplisiet gestel is. Hierdie studie ondersoek die stoflike liggaam in verhouding tot tegnologie en die invloed wat nuwe, virtuele tegnologiëe op ons begrip van die liggaam het, nie slegs deur voorstellings van die tegnologies-gemodifieërde ligaam te ondersoek nie, maar deur ook te kyk na hoe kontemporêre kulturele praktyke beliggaamde subjekte produseer wat huself op een of ander wyse as geïntegreerd met tegnologie sien. Die studie fokus op die materiële artefakte van kontemporêre kultuur in verhouding tot eksplisiet virtuele tegnologiëe. Dit bevorder ‘n terugkeer tot beliggaamdheid, terwyl dit teen die sogenaamde “postmenslike” era se mees kenmerkende troop van ontliggaamdheid argumenteer. Die studie begin dus deur een van die mees populêre metafore vir die verhouding tussen die liggaamlike en die tegnologiese te ondersoek, naamlik Donna Haraway se siborgfigure. Sedert die publikasie van Haraway se “A Manifesto for Cyborgs” (1985), het verskeie feministiese vakgeleerdes die vroulike siborg-figuur beide as ’n ikoon vir emansipasie beskou en gebruik om die kulturele praktyke wat vroulike geslagsidentiteit gelyktydig konstrueer én beperk te bespreek. Deur Haraway se siborg-figure met kulturele voorstellings van vroulike siborg-liggame te vergelyk, kom hierdie studie tot die gevolgtrekking dat die metafoor van die siborg inherent nóg uitdaagend nóg bevrydend is. Gevolglik ondersoek die studie die onbevoegdheid van die siborg-figuur as ‘n ikoon vir postgeslagtigheid in terme van die siborg-liggaam se negering van beliggaamdheid, aangesien siborg-figure op ‘n paradoksale wyse die selfde Cartesiaanse dualisme versterk wat Haraway se siborg-diskoers wou dekonstrueer. Dit ondersoek voorstellings van drie vroulike siborg-figure in kontemporêre populêre kultuur om te illustreer hoe die siborgliggaam se negering van beliggaamdheid slegs konvensionele geslagstereotipes versterk, eerder as om ons van beperkende, patriargale geslagspraktyke te bevry. Ten slotte ondersoek hierdie studie die deurslaggewende tussenspel tussen die ligaamlike en die tegnologiese, nie slegs in terme van meer denkbeeldige siborg tropes nie, maar ook in terme van die fisiese reailiteit van konkrete, beliggaamde lewenservaringe. Deur die toenemend beliggaamde kwaliteit van kiberruimtes te ondersoek, stel hierdie studie moontlike alternatiewe maniere voor om die postmoderne subjek en sy/haar afhanklikheid van tegnologie te beskryf, eerder as om op ontliggaamde en hipergeseksualiseerde siborg-figure staat te maak. Aangesien ‘n feministiese beliggaamde etiek gegrond is in ‘n projek om die vroulike liggaam op só ‘n wyse voor te stel dat patriargale, stereotipiese of vervreemdbare beelde van die vroulike liggaam vermy word, eindig hierdie studie met meer nuttige metodes om die stoflike liggaam in verhouding tot virtuele tegnologie voor te stel deur ‘n beroep tot ‘n meer beliggaamde etiek te maak.
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2

Krause, Paul James. "Vibrational predissociation in weakly bound molecules". Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313784.

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3

Kana'ah, A. "ODMR studies of bound excitons in GaP". Thesis, University of Hull, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376371.

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4

Nandra, Roshina. "Gravitationally bound objects in an expanding universe". Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610727.

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5

Price, Jamie H., Lindsay Lester, Kayla Knupp, LaShay Jennings i Edward J. Dwyer. "Making Comb-Bound Books in the Classroom". Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/6026.

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6

Baldo, Mesa Casa Lucas. "Majorana bound states in Rashba nanowire junctions". Thesis, Uppsala universitet, Materialteori, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-416237.

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Nanowires with Rashba spin-orbit coupling represent a promising platform for the realization of one-dimensional topological superconductivity and Majorana bound states. In this work we investigate Majorana bound states in hybrid normal-superconductor and short superconductor-normal-superconductor junctions based on nanowires with Rashba spin-orbit coupling. In particular, we explore consequences of the topological phase transition as well as the non-locality and self conjugation properties of the Majorana states on the low-energy spectrum and the Josephson effect in the case of superconductor-normal-superconductor junctions. Our work shows the great potential of hybrid junctions as a platform for the study of topological superconductivity and Majorana bound states.
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7

Dwyer, Edward J. "Making Cloth-Bound Books in the Classroom". Digital Commons @ East Tennessee State University, 1995. https://dc.etsu.edu/etsu-works/3408.

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8

Mukherjee, Samyobrata. "Bound states in the continuum in planar anisotropic structures". Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/672894.

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Bound states in the continuum (BICs) are modes that remain radiationless though they exist in the part of the spectrum that corresponds to radiating waves. They are a general wave phenomenon and following initial theoretical predictions and subsequent landmark experimental demonstrations of the existence of BICs in photonic systems, there has been an explosion of interest in photonic BICs. Planar anisotropic waveguides containing uniaxial materials support the existence of full vector BICs. In this thesis we study the properties of these full vector BICs using the leaky mode formalism. We start by studying a structure with an isotropic cover, a uniaxial core/film and a uniaxial substrate, where one of the basis waves in the substrate provides the radiation channel. We find that the orientation of the optic axes of the two materials has substantial impact on BIC existence. This allows us to define regimes of anisotropy-symmetry based on the orientation of the optic axes relative to the direction of propagation and the interface plane. Varying the offset between the film and substrate optic axes in the interface plane, or azimuthal anisotropy-symmetry breaking, leads to the distortion of the BIC lines of existence on the leaky mode. Moving either optic axis out of the interface plane, or polar anisotropy-symmetry breaking, leads to the BIC lines of existence collapsing to points. The collapse of the BIC lines of existence to discrete points when polar anisotropy-symmetry is broken also leads to a transformation from lines of phase discontinuity to phase singularities in the radiation channel amplitude which can be assigned winding numbers. The BICs are robust and cease to exist only when two BICs with opposite winding numbers merge in the parameter space or the BIC moves beyond the leaky mode cutoff. We also study the impact of the variation of the constitutive parameters of this waveguide on the existence of BICs. We find that varying the refractive indices of the different components of the waveguide have varying degrees of impact on the BIC lines of existence but in all cases results in their continuous transformation, allowing us to construct bands of BIC existence. The sensitivity of BICs to changes of the refractive index also suggest possible applications in sensing. We then move on to studying structures where the cover, the film and the substrate are all uniaxial with radiation channels available in the cover and the substrate. The structure supports lines of BIC existence when the structure is mirror symmetric and therefore the radiation channels are equivalent. Breaking the mirror symmetry of the structure in any way leads to distinct radiation channels and the added constraint of a second radiation channel also having to be zero leads to the lines of BIC existence collapsing to discrete points. These discrete BIC points are robust and tunable and characterised by phase singularities in both radiation channels. Breaking polar anisotropy-symmetry in addition to the mirror symmetry leads to the formation of unidirectional guided resonances, which are unbound modes that radiate only via one radiation channel even when other channels are available. UGRs are characterised by phase singularities in the amplitude of the radiation channel where they do not radiate. Finally, we study the surface modes at an interface between a positive uniaxial material and a negative uniaxial material. We find that this interface can support standard, guided D’yakonov surface waves (DSWs). Moreover, it can also support leaky DSWs and even a surface D’yakonov BIC when coupling of the leaky DSW to the radiation channel is cancelled. We have thus improved the understanding of the hybrid leaky modes and full vector BICs supported by such structures and developed the concept of anisotropy-symmetry which has substantial impact on the existence of BICs and UGRs in these structures.
Los estados ligados en el continuo (BIC) son modos que permanecen sin radiación aunque existen en la parte del espectro que corresponde a las ondas radiantes. Son un fenómeno ondulatorio general y, tras las predicciones teóricas iniciales y las demostraciones experimentales históricas posteriores de la existencia de BIC en sistemas fotónicos, ha habido una explosión de interés en los BIC fotónicos. Las guías de ondas planas anisotrópicas que contienen materiales uniaxiales respaldan la existencia de los BIC. En esta tesis estudiamos las propiedades de estos BIC utilizando el formalismo de modo con fugas. Comenzamos estudiando una estructura con una cubierta isotrópica, un núcleo / capa uniaxial y un sustrato uniaxial, donde una de las ondas base en el sustrato proporciona el canal de radiación. Encontramos que la orientación de los ejes ópticos de los dos materiales tiene un impacto sustancial en la existencia de BIC. Esto nos permite definir regímenes de anisotropía-simetría basados en la orientación de los ejes ópticos en relación con la dirección de propagación y el plano de interfaz. La variación del desplazamiento entre los ejes ópticos de la capa y el sustrato en el plano de la interfaz, o la ruptura de la simetría de anisotropía azimutal, conduce a la distorsión de las líneas de existencia BIC en el modo con fugas. Mover el eje óptico fuera del plano de la interfaz, o la ruptura de la simetría de anisotropía polar, lleva a que las líneas de existencia de los BIC colapsen en puntos. El colapso de las líneas de existencia BIC a puntos discretos también conduce a una transformación de líneas de discontinuidad de fase a singularidades de fase en la amplitud del canal de radiación a las que se les pueden asignar números de devanado. Los BIC son robustos y dejan de existir solo cuando dos BIC con números de devanados opuestos se fusionan en el espacio de parámetros o el BIC se mueve más allá del corte del modo de fugas. También estudiamos el impacto de la variación de los parámetros constitutivos de esta guía de ondas sobre la existencia de BIC. Encontramos que la variación de los índices de refracción de los diferentes componentes de la guía de ondas tiene diversos grados de impacto en las líneas de existencia BIC pero en todos los casos da como resultado su transformación continua, lo que nos permite construir bandas de existencia BIC. La sensibilidad de los BIC a los cambios del índice de refracción también sugiere posibles aplicaciones en la detección. Luego pasamos al estudio de estructuras donde la cubierta, la capa y el sustrato son todos uniaxiales con canales de radiación disponibles en la cubierta y el sustrato. La estructura admite líneas de existencia de los BIC cuando la estructura es simétrica de espejo y, por lo tanto, los canales de radiación son equivalentes. Romper la simetría especular de la estructura de cualquier manera conduce a canales de radiación distintos y la restricción adicional de un segundo canal de radiación, que también debe ser cero, conduce a que las líneas de existencia BIC colapsen en puntos discretos. Estos puntos de BIC discretos son robustos y sintonizables y se caracterizan por singularidades de fase en ambos canales de radiación. La ruptura de la anisotropía-simetría polar además de la simetría especular conduce a la formación de resonancias guiadas unidireccionales, que son modos libres que irradian solo a través de un canal de radiación incluso cuando hay otros canales disponibles. Los UGR se caracterizan por singularidades de fase en la amplitud del canal de radiación donde no irradian.
Fotònica
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9

Wermelin, Karin. "Surface bound bisphosphonate for implant fixation in bone". Doctoral thesis, Linköpings universitet, Ortopedi och idrottsmedicin, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15310.

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During the surgical preparation of bone, prior to insertion of an implant, bone will be traumatized which leads to local resorption. Consequently, early implant fixation might be reduced. Impaired early fixation, as evidenced by radiostereometry, has been associated with increased risk of late loosening. Bisphosphonates are known to inhibit bone resorption by osteoclasts and have shown to increase implant fixation when administered systemically or locally directly at the bone prior to implant insertion. A method to bind bisphosphonates directly to the implant was developed. Stainless steel screws were coated with crosslinked fibrinogen, serving as an anchor for bisphosphonate attachment. The screws were inserted in the tibial metaphysis in rats and implant fixation was analyzed with pullout measurements. Bisphosphonate coated screws turned out to have 28 % higher pullout force at 2 weeks compared to control screws with the fibrinogen coating only. The next experiment was designed to measure at what stage in the healing process the strongest bisphosphonate effect was gained. Bisphosphonate coated screws were expected to reduce the resorption of the traumatized bone. However, no decreased fixation was found in the control group. Instead, the fixation increased with time, and so did the effect of the bisphosphonates. At 8 weeks, the pullout force was twice as high for screws with bisphosphonate compared to control screws. By histology at 8 weeks, a bone envelope was found around bisphosphonate coated screws but absent around control screws. Thus, the anti catabolic action of the bisphosphonate resulted in an increased amount of bone surrounding the bisphosphonate screws. Titanium is generally considered to be better fixated in bone compared to stainless steel. The coating technique was found to be applicable on titanium as well, again with improved fixation. A majority of fractures occur in osteoporotic bone. Despite the relatively low amount of bisphosphonates at the screws, the bisphosphonate coating improved implant fixation at 2 weeks also in rats made osteoporotic by ovariectomy. In conclusion, bisphosphonates bound to titanium or stainless steel screws coated with fibrinogen increased fixation in bone, in rats. These results suggest that the bisphosphonate and fibrinogen coating might improve the fixation of screw shaped implants and possibly also arthroplasties, in humans.
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10

Lecavalier, Pierre. "Polymer-bound chiral auxiliaries in asymmetric hydride reductions". Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/7946.

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The preparation of chiral amino alcohols which can be used in the asymmetric reduction of acetophenone is described. These amino alcohols were complexed with lithium aluminum hydride (LAH) and achiral agents in various ratios and once treated with acetophenone, afforded l-phenylethanol in poor to moderate optical yields (20%-70%). These chiral molecules were grafted to 1% crosslinked polystyrene and the polymeric hydride complexes yielded l-phenylethanol in lower optical yield than the model compounds. A detailed study of this behavior using l-ephedrine as the chiral auxiliary allowed us to conclude that site interactions as well as site accessibility were responsible for a decrease in the optical yield of the alcohol when the polymer-supported reagent was used in the reduction of the ketone. This polymer behavior is referred to as the "polymer effect". By making use of polymers with a low degree of functionalization, it was nonetheless possible to obtain optical yields comparable to that of the model molecules. Some amino alcohols were also tested as complexes of diborane and similar optical yields to those of the aluminum hydride complexes were obtained. In order to study the limitation of polymer aluminum complexes vs. the borane complexes, we attempted to prepare polymer-supported 83 and 84. Because of the lability of the benzyl ether bond, the desired polymers were not obtained in sufficiently high yield to allow their use in the reduction of acetophenone.
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11

Peet, Daniel J. "Protein-bound fatty acids in mammalian hair fibres /". Connect to thesis, 1994. http://eprints.unimelb.edu.au/archive/00000641.

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12

Nairn, Alison Kathleen. "Metal bound radicals in proteins : a biomimetic approach". Thesis, University of York, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341097.

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13

Jeřábková, Tereza [Verfasser]. "Stellar populations in gravitationally bound systems / Tereza Jeřábková". Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1219140635/34.

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14

Shaw, Laurie Duncan. "Analysing bound structures in cosmological N-body simulations". Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614351.

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15

Brisudova, Martina Maria. "QCD bound states in light-front Hamiltonian approach /". The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487942739806751.

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Martin, Luke. "Viscosity Bound Violation in the MTZ Black Hole:". Thesis, Boston College, 2021. http://hdl.handle.net/2345/bc-ir:109169.

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Thesis advisor: Kevin Bedell
Using the AdS/CFT correspondence, it has been shown that the ratio of shear viscosity to entropy density is bounded from below in strongly coupled field theories with a gravity dual. More recently, this bound has been shown to be grossly violated in novel non-Fermi liquids and the unitary Fermi gas in the presence of superfluid fluctuations above T_c. Nevertheless, a holographic approach to such systems which break the lower bound have been strongly reliant on AdS spacetimes with massive gravitons. In this work, we propose a violation of the viscosity over entropy bound in 3+1 dimensional AdS spacetimes that support stable black hole solutions with non-zero scalar field. Such a black hole is shown to be characterized by a novel phase transition at large negative mass, where the underlying thermodynamics agrees with the Larkin-Ovchinnikov-Fulde-Ferrell (LOFF)-like phase seen in the unitary Fermi gas near Tc and the bound is similarly broken. Such a work paves the way for a holographic description of strongly-entangled quantum fluids at high Reynolds number
Thesis (BS) — Boston College, 2021
Submitted to: Boston College. College of Arts and Sciences
Discipline: Scholar of the College
Discipline: Physics
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17

Baggott, Rory. "Modifications of bound states in dense plasma environments". Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/90134/.

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Electronic bound states in dense plasmas are modified, due to screening of ionic potentials by nearby free charge carriers. In particular, screening typically reduces the ionization energies of bound electrons. In this thesis, we explore the key physics underlying bound state modifications and ionization energies in dense plasmas. A theoretical framework is developed to study the free electrons and ion structure, and to calculate the resulting electrostatic fields in the plasma. The influence of such external fields on electronic bound states is then calculated. The framework is extended to include nonequilibrium plasmas, with populations of high-energy electrons. The screened potential around a central test ion is studied using the nonlinear Poisson equation. This approach allows different treatments for the free electrons, ions and the potential due to the central test ion to be evaluated. Quantum mechanical interactions between the bound and free electrons are found to be important in determining the screened potential, as are correlations between ions. The modified bound states are then calculated using a Hartree-Fock method, which takes into account the finite extent of bound state wavefunctions. The relationship between the modification of bound states and the modelling of x-ray scattering is also explored. We show how the modified bound state energies could be obtained from quantities that can be determined from x-ray Thomson scattering experiments. The nonlinear model is applied to an analysis of recent experiments on compressed plastics; on compressed and solid-density aluminium; and on shocked iron. These experiments had provided seemingly contradictory evidence regarding the applicability of existing screening models. The nonlinear screening model is found to partly reconcile this apparent contradiction. A screening model suitable for the treatment of nonequilibrium systems is applied to a model distribution function. The resulting ionization energies are found to be insensitive to the shape of the high-energy part of the distribution function. However, the role of hot electrons as an energy sink is found to be important in modelling screening in nonequilibrium systems. The presence of hot electrons reduces the bulk temperature relative to an equilibrium system, resulting in stronger screening overall.
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18

Keith, Karin J., A. Horton, A. Roach, J. Temaj i Edward J. Dwyer. "Producing Memorable Cloth-Bound Books in the Classroom". Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/3735.

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19

Wada, Tsutomu. "Protein-bound polysaccharide inhibits angiogenesis in vitro and in vivo". 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149569.

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20

Kim, Byoung Min. "Upper bound analysis for drag anchors in soft clay". Texas A&M University, 2005. http://hdl.handle.net/1969.1/4887.

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This study presents an upper bound plastic limit analysis for predicting drag anchor trajectory and load capacity. The shank and fluke of the anchor are idealized as simple plates. The failure mechanism involves the motion of the anchor about a center of rotation, the coordinates of which are systematically optimized to determine the minimum load at the shackle. For a given anchor orientation, the direction of the shackle force is varied to establish a relationship between the magnitude and direction of the shackle load. Coupling this relationship to the Neubecker-Randolph anchor line solution produces a unique solution for the magnitude and orientation of the shackle force. The anchor is then advanced a small increment about the optimum center of rotation and the process is repeated. The upper bound method (UBM) provides a practical means to determine the trajectory of the anchor and the anchor load capacity at any point in the trajectory. To better understand of the anchor behavior, extensive parameter studies were carried out varying the properties of the anchor, anchor line, and soil. The UBM show good agreement with six full-scale tests covering several different anchor types and centrifuge model tests.
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21

Cornutt, Catherine. "Stitching the sacred, bound in the bundle of life". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0025/NQ48811.pdf.

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22

Zhong, Jiling. "Upper Bound Analysis and Routing in Optical Benes Networks". Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/cs_diss/4.

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Multistage Interconnection Networks (MIN) are popular in switching and communication applications. It has been used in telecommunication and parallel computing systems for many years. The new challenge facing optical MIN is crosstalk, which is caused by coupling two signals within a switching element. Crosstalk is not too big an issue in the Electrical Domain, but due to the stringent Bit Error Rate (BER) constraint, it is a big major concern in the Optical Domain. In this research dissertation, we will study the blocking probability in the optical network and we will study the deterministic conditions for strictly non-blocking Vertical Stacked Optical Benes Networks (VSOBN) with and without worst-case scenarios. We will establish the upper bound on blocking probability of Vertical Stacked Optical Benes Networks with respect to the number of planes used when the non-blocking requirement is not met. We will then study routing in WDM Benes networks and propose a new routing algorithm so that the number of wavelengths can be reduced. Since routing in WDM optical network is an NP-hard problem, many heuristic algorithms are designed by many researchers to perform this routing. We will also develop a genetic algorithm, simulated annealing algorithm and ant colony technique and apply these AI algorithms to route the connections in WDM Benes network.
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23

Redwood, William Stanley. "Spiral bound : cosmologies, spatialities and selves in contemporary magick". Thesis, University College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406874.

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AGUIAR, BARBARA FERNANDES AMORIM DE. "MORPHOLOGICAL DEMARCATIONS: PREFIXES AND BOUND COMPOUNDS IN BRAZILIAN PORTUGUESE". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=15109@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
Este trabalho analisa os critérios de classificação das palavras formadas por derivação e composição em Português, com o objetivo de obter maior aprofundamento sobre as definições encontradas em gramáticas, livros e artigos que permeiam o tema. O objetivo é a verificação da adequação dessas definições a determinadas formações encontradas no corpus, assim como uma possível solução para problemas que envolvam essa ordem. Primeiramente, apresentamos as definições básicas sobre os elementos envolvidos no processo de formação de palavras. Em seguida, discutimos essas definições no aspecto tradicional, estruturalista e gerativo. Após, são oferecidas visões de autores contemporâneos que trabalham como outras línguas e que apresentam novos conceitos e características sobre elementos formadores. Finalmente, analisam-se as teorias selecionadas ao longo da discussão que são testadas em vocábulos do corpus. As conclusões mostram que os compostos de base presa apresentam elementos que são formas combinatórias que possuem comportamento específico e que não se enquadram nem como afixos, nem como radicais, sendo mais interessante, desse modo, a classificação de algumas dessas palavras como combinações e não composições. Além disso, verificou-se que formas que apresentam a mesma estrutura como preposição e como prefixo são homônimas, agregando características próprias de cada um desses elementos na formação.
This work studies criteria of classification of derivation and compounding in Portuguese, with the intent of having a more solid understanding of the definitions found in grammars, books and articles dedicated to this topic. Our goal in to verify to which extent these definitions are adequate to describe data we analyzed in our corpus and to provide a possible solution to some crucial problems these data present. Initially, basic definitions of the elements related to word formation are presented. Then, these definitions are discussed in the traditional, structuralist and generative approaches. Next, we present and discuss different views of contemporary authors who work with analogous problems in other languages and propose new concepts and characteristics for the word structures that we analyze. Finally, the selected proposals are analyzed and tested in the words of the corpus. Our conclusion is that neoclassical compounds have elements which are combining forms that have a specific behavior, so that they cannot be classified as affixes, nor should they be classified as stems, which makes more interesting to consider these word structures as combinations rather than compounds. Furthermore, it was confirmed that forms which have the same structure as a preposition and as a prefix are homonyms, so that they add to the respective formations specific properties of each of these elements.
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Strauss, Lindie Helene. "The enzymatic release of glycosidically-bound terpenes in must". Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/22185.

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Bibliography: pages 79-86.
Flavour in wines is perhaps the most important factor affecting wine quality, with monoterpenoids being among the compounds contributing to flavour. In grapes there exists glycosidically-bound forms of these monoterpenes, representing a latent source of aroma. This project is a study on the ability of different enzymes to release these monoterpenes in Muscat d'Alexandrie and Weisser Riesling grapes. Different commercial enzyme preparations were characterised with respect to their catalytic properties and fractionated by ion exchange chromatography in the most active fractions. Amongst those commercial preparations tested, Rohapect C was found to be the most effective at conditions prevalent during wine making. These purified fractions were added to the above mentioned grapes to determine their effect on the release of different monoterpenes. Even though the enzymes were active on synthetic substrates, limited release of terpenes from must could be detected. Possible causes for this apparent inability to release monoterpenes were investigated. Product inhibition due to the presence of high concentrations of glucose in the must appeared to be the main cause of limited enzyme activity. In an attempt to overcome this problem, glucose in the above mentioned cultivars was oxidised to gluconic acid by glucose oxidase, prior to attempting monoterpene release by Rohapect C. Although no marked increase in the release of total terpenes occured, a significant increase in the concentrations of some individual terpenes could be observed. The effect of this on wine quality remains to be ascertained.
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26

Masumoto, Ayaka. "Overt Pronouns and Bound Variable Reading in L2 Japanese". The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218636842.

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27

Gasiorowski, Pawel. "Individual and group dynamic behaviour patterns in bound spaces". Thesis, London Metropolitan University, 2017. http://repository.londonmet.ac.uk/1447/.

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The behaviour analysis of individual and group dynamics in closed spaces is a subject of extensive research in both academia and industry. However, despite recent technological advancements the problem of implementing the existing methods for visual behaviour data analysis in production systems remains difficult and the applications are available only in special cases in which the resourcing is not a problem. Most of the approaches concentrate on direct extraction and classification of the visual features from the video footage for recognising the dynamic behaviour directly from the source. The adoption of such an approach allows recognising directly the elementary actions of moving objects, which is a difficult task on its own. The major factor that impacts the performance of the methods for video analytics is the necessity to combine processing of enormous volume of video data with complex analysis of this data using and computationally resourcedemanding analytical algorithms. This is not feasible for many applications, which must work in real time. In this research, an alternative simulation-based approach for behaviour analysis has been adopted. It can potentially reduce the requirements for extracting information from real video footage for the purpose of the analysis of the dynamic behaviour. This can be achieved by combining only limited data extracted from the original video footage with a symbolic data about the events registered on the scene, which is generated by 3D simulation synchronized with the original footage. Additionally, through incorporating some physical laws and the logics of dynamic behaviour directly in the 3D model of the visual scene, this framework allows to capture the behavioural patterns using simple syntactic pattern recognition methods. The extensive experiments with the prototype implementation prove in a convincing manner that the 3D simulation generates sufficiently rich data to allow analysing the dynamic behaviour in real-time with sufficient adequacy without the need to use precise physical data, using only a limited data about the objects on the scene, their location and dynamic characteristics. This research can have a wide applicability in different areas where the video analytics is necessary, ranging from public safety and video surveillance to marketing research to computer games and animation. Its limitations are linked to the dependence on some preliminary processing of the video footage which is still less detailed and computationally demanding than the methods which use directly the video frames of the original footage.
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Hauswald, Christian. "Dynamics of free and bound excitons in GaN nanowires". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2015. http://dx.doi.org/10.18452/17164.

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GaN-Nanodrähte können mit einer hohen strukturellen Perfektion auf verschiedenen kristallinen und amorphen Substraten gewachsen werden. Sie bieten somit faszinierende Möglichkeiten, sowohl zur Untersuchung von fundamentalen Eigenschaften des Materialsystems, als auch in der Anwendung in optoelektronischen Bauteilen. Obwohl bereits verschiedene Prototypen solcher Bauteile vorgestellt wurden, sind viele grundlegende Eigenschaften von GaN-Nanodrähten noch ungeklärt, darunter die interne Quanteneffizienz (IQE), welche ein wichtiges Merkmal für optoelektronische Anwendungen darstellt. Die vorliegende Arbeit präsentiert eine detaillierte Untersuchung der Rekombinationsdynamik von Exzitonen, in selbst-induzierten und selektiv gewachsenen GaN Nanodraht-Proben, welche mit Molekularstrahlepitaxie hergestellt wurden. Die zeitaufgelösten Photolumineszenz (PL)-Experimente werden durch Simulationen ergänzt, welche auf Ratengleichungs-Modellen basieren. Es stellt sich heraus, dass die Populationen von freien und gebundenen Exzitonen gekoppelt sind und zwischen 10 und 300 K von einem nichtstrahlenden Kanal beeinflusst werden. Die Untersuchung von Proben mit unterschiedlichem Nanodraht-Durchmesser und Koaleszenzgrad zeigt, dass weder die Nanodraht-Oberfläche, noch Defekte als Folge von Koaleszenz diesen nichtstrahlenden Kanal induzieren. Daraus lässt sich folgern, dass die kurze Zerfallszeit von Exzitonen in GaN-Nanodrähten durch Punktdefekte verursacht wird, welche die IQE bei 10 K auf 20% limitieren. Der häufig beobachtete biexponentiellen PL-Zerfall des Donator-gebundenen Exzitons wird analysiert und es zeigt sich, dass die langsame Komponente durch eine Kopplung mit Akzeptoren verursacht wird. Motiviert durch Experimente, welche eine starke Abhängigkeit der PL-Intensität vom Nanodraht-Durchmesser zeigen, wird die externen Quanteneffizienz von geordneten Nanodraht-Feldern mit Hilfe numerischer Simulationen der Absorption und Extraktion von Licht in diesen Strukturen untersucht.
GaN nanowires (NWs) can be fabricated with a high structural perfection on various crystalline and amorphous substrates. They offer intriguing possibilities for both fundamental investigations of the GaN material system as well as applications in optoelectronic devices. Although prototype devices based on GaN NWs have been presented already, several fundamental questions remain unresolved to date. In particular, the internal quantum efficiency (IQE), an important basic figure of merit for optoelectronic applications, is essentially unknown for GaN NWs. This thesis presents a detailed investigation of the exciton dynamics in GaN NWs using continuous-wave and time-resolved photoluminescence (PL) spectroscopy. Spontaneously formed ensembles and ordered arrays of GaN NWs grown by molecular-beam epitaxy are examined. The experiments are combined with simulations based on the solution of rate equation systems to obtain new insights into the recombination dynamics in GaN NWs at low temperatures. In particular, the free and bound exciton states in GaN NWs are found to be coupled and affected by a nonradiative channel between 10 and 300 K. The investigation of samples with different NW diameters and coalescence degrees conclusively shows that the dominating nonradiative channel is neither related to the NW surface nor to coalescence-induced defects. Hence, we conclude that nonradiative point defects are the origin of the fast recombination dynamics in GaN NWs, and limit the IQE of the investigated samples to about 20% at cryogenic temperatures. We also demonstrate that the frequently observed biexponential decay for the donor-bound exciton originates from a coupling with the acceptor-bound exciton state in the GaN NWs. Motivated by an experimentally observed, strong dependence of the PL intensity of ordered GaN NW arrays on the NW diameter, we perform numerical simulations of the light absorption and extraction to explore the external quantum efficiency of these samples.
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Bellefleur, Karen M. Notebloom. "Career-bound and place-bound orientation of educational executives : implications for organizational role change in the education of the deaf". W&M ScholarWorks, 1985. https://scholarworks.wm.edu/etd/1539618490.

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Superintendents of residential schools for the deaf were the subjects of a study to determine what effects career orientation had on the implementation of role changes since the passage of Public Law 94-142 in 1975. Career orientation is a construct concerned with whether an individual succeeds to an executive position from a lower rank within the hiring institution from inside (place-bound) or from outside (career-bound).;Prior to this study career orientation had only been examined in terms of superintendents of public school districts where the variable was found to identify a 2 to 1 ratio of career-bound to place-bound. The current study examined the role of career orientation among top administrators of a residential school.;The study used a questionnaire mailed to 66 administrators of residential schools for the deaf. There were 58 (88%) useable surveys returned. Significant differences were found among career-bound and place-bound superintendents in residential schools for the deaf. First, career- and place-bound superintendents were found in the same ratio as public school superintendents, 2 to 1. Second, superintendents with differing career orientations also had significant differences in: age of completion of doctorate degree, full-time attendance in doctoral programs, number of years lapsed between master's and doctorate degrees, geographical mobility, attitudes of mobility, and publication rate. However, implementation of institutional change did not show significant differences between the two groups of superintendents varying in career orientation.;It was concluded that the many similarities in educational preparation and professional behavior between the two groups may account for similar administrative behavior. Further, the 1975 mandate for change was applicable to all educational programs receiving federal funds. Therefore, changes were important to nearly all educational administrators.;It was recommended that the relation between career orientation and change implementation be studied in a context free of legislative mandate, and applied to a group of educational leaders with a greater likelihood of difference in educational preparation. (Abstract shortened with permission of author.).
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Shkarupin, Aliaksei. "Activation of Organically-Bound Tritium by Tritiated Water in Soil". Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39370.

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The fate of tritium in the environment is a target of interest in many studies. However reported concentrations of organically bound tritium (OBT) in soil are not well understood. In this study, a supplementary non-biological process of soil OBT activation in the environment was explored. The vicinity of SRB Technologies (Pembroke, Ontario) was chosen as the sampling location because of a significant airborne tritium release prior to 2001 which resulted in groundwater contamination. Soil cores were extracted from the ground near the tritium-releasing facility stack in 2017 and split into 10 cm subsamples for HTO/OBT, total carbon and hydrogen, particle size, thermogravimetric, radiocarbon and 3He mass spectrometry analyses. Observed HTO profiles revealed elevated tritium concentrations still retained in the soil. The results indicated that clay bound tritium masks the OBT signal and cannot be easily distinguished. Multiple short-term sample rinses with tritium-free water have little effect on clay bound water removal. Therefore, clay bound tritium should to be addressed in any future research related to soil OBT.
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Tarrús, Castellà Jaume. "Explicit Bound states and Resonance fields in Effective Field Theories". Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/82144.

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The first three chapters of this thesis have been devoted to the theoretical background. We presented the novel work of this thesis in chapters 4 and 5. In chapter 4 we have constructed a Chiral effective field theory for the nucleon--nucleon system which contains dibaryon fields as fundamental degrees of freedom. The large scattering lengths in the 1S0 and the 3S1 channels force the dibaryon residual masses to be much smaller than the pion mass. Since no counterterm has to be enhanced like in the KSW approach, naïve dimensional analysis is sufficient to assess the size of the effective field theory low--energy constants, keeping the perturbative expansion under control. We organized the calculation in a series of effective theories, which are obtained by sequentially integrating out higher energy and momentum scales. We first integrate out energy scales of the order of the pion mass. This leads to an effective theory with dibaryon and nucleon fields, pNNEFT. For three momenta much smaller than the pion mass, it is convenient to further integrate out three momenta of the order of pion mass, which leads to the npNNEFT. We have calculated the nucleon--nucleon scattering amplitudes for energies smaller than the pion mass in the 1S0 and the 3S1-3D1 channels at NNLO. The numerical results for the phase shifts and mixing angle are also similar to the ones obtained in the KSW approach. A good description of the 1S0 channel is obtained, but for the 3S1-3D1 channel our results also fail to describe data. The reasons of this failure can be traced back to the iteration of the one potential pion exchange potential. We have calculated the matching of the dibaryon residual masses and dibaryon-nucleon couplings up to NLO. We have showed that, certain class of diagrams that contribute to the residual mass, involving n potential pion exchanges in loops with radiation a pion, have to be summed in the 3S1 channel. In the 3S1 channel the resummation can be carried out. However in the 1S0 channel the resummation is not possible, but it is very likely that loop contributions are still large. Using the results for the matching for residual masses and dibaryon--nucleon coupling for npNNEFT we have given Chiral extrapolation formulas for scattering lengths of the scalar channels up to corrections of order mq(3) We have fitted these expressions to lattice data and compared the results to previous studies of the quark mass dependence of the scattering lengths. In chapter 5 we have considered the possibility that the spectrum of QCD in the Chiral limit contains an isosinglet scalar with a mass much lower than the typical hadronic scale, and have constructed the corresponding effective theory that includes it together with the standard pseudo-Goldstone bosons, ChiPTs. In the purely scalar sector of the theory we argued that the scalar self interactions can be ignored. Demanding that the scalar does not mix with the vacuum together with Chiral symmetry imposes that two of the low--energy constants should be taken as zero. We have presented the calculation of pion mas and decay constant at NLO. The dynamical scalar field introduces new non-analyticities in the quark mass dependence of these observables. We have used lattice data from the ETM collaboration to fit the low--energy constants. The chi-squared per degree-of-freedom delivered by the ChiPTs fits are similar to ChiPT ones indicating that lattice data does not favor any of the theories over the other. The ChiPTs expressions for the S-wave pion-pion scattering lengths differ from those of ChiPT already at leading order. Furthermore ChiPTs allows for the calculation of the sigma decay width. Neither the value of the scattering lengths for the I=0 and I=2 channels are close to the experimental numbers. Although the value of I=0 is slightly closer to it than the one obtained in tree-level ChiPT, the value of the I=2 channel is much further away. We argue, using the decoupling limit that this is due to the sizable NLO corrections because of the large value of l1. We also show a different approach in which we fit the scattering length expressions with all parameters free to lattice data and use the results to provide predictions for the sigma mass and decay width.
En el marc de teories efectives per a Cromodinàmica Quàntica a baixes energies, una situació interessant es presenta quan els graus de llibertat de baixes energies poden formar estats lligats, estats virtuals o ressonàncies pròximes al llindar. Com que aquest estats estan a prop del llindar afecten a les amplituds de dispersió, però tan mateix no poden ser descrites utilitzant teoria de pertorbacions, ja que les series polinòmiques finites en el moment no poden generar un pol en l’amplitud. Aquest pols es poden obtenir resumant certes classes de diagrames, per exemple usant tècniques d’unitarització, que no són consistents amb el comptatge de la teoria efectiva, o alternativament assumint un augment de l’importància de certs acoblaments. En aquest últim cas s’han de calcular les equacions del grup de renormalització per a tots els acoblaments per tal de determinar-ne el tamany correcte, el que dificulta mantenir la sèrie pertorbativa sota control. És una vella observació de Weinberg que la inclusió explícita d’estats lligats i ressonàncies com a graus de llibertat de la teoria efectiva millora la convergència de la teoria de pertorbacions. Es pot entendre fàcilment aquesta millora de la convergencia ja que les amplituds de dispersió tindran la estructura analítica correcta. Un dels temes principals d’aquesta tesi ha sigut explorar aquest fet dins d'un marc modern de teories efectives. El treball original d’aquesta tesi és als capítols 4 i 5. Al capítol 4 hem construït una teoria efectiva Quiral pel sistema nucleó–nucleó que conté camps dibariònics com a graus de llibertat fonamentals. Les longituds de dispersió grans en els canals 1S0 i 3S1 poden ser representades de forma natual gràcies a les petites masses residuals dels dibarions. Em calculat les amplituds de dispersió per aquesta teoria fins a NNLO per als canals 1S0 i 3S1-3D1, i em donat fòrmules d'extrapolació quiral per a les longituds de dispersió d'ona S fins a NLO. Al capítol 5 hem considerat la possiblitat de que l’espectre de QCD en el limit Quiral contingui un isosinglet escalar amb massa molt mes petita que l’escala hadroníca típica, i hem construït una teoria efectiva que l’inclou conjuntament amb els pseudo–bosons de Goldstone. Hem calculat la massa i la constant de decaïment del pion fins a NLO i hem ajustat els resultats a dades en el reticle. També hem estudiat les longituds de dispersió de les col•lisions pió-pió per a ona S en isospin I=0 i I=2 i les hem comprat amb dades al reticle.
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Sherren, Katherine Dove (Kate), i katesherren@yahoo com au. "Sustainability Bound? A study of interdisciplinarity and values in universities". The Australian National University. Centre for Resource and Environmental Studies, 2008. http://thesis.anu.edu.au./public/adt-ANU20080507.100919.

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The United Nations declared 2005 to 2014 to be the Decade of Education for Sustainable Development. This agenda is being implemented enthusiastically in university facilities management and operations, and while research in sustainability is increasingly common, tertiary curriculum has not experienced a similar push. This thesis undertakes to explore the expressions of sustainability in the academic activities of universities, and to determine what sort of change (if any) is appropriate. It also seeks to mediate what has become a polarised debate between idealists and pragmatists around the implementation of EFS. Two key features of the work are: 1) the investigation of sustainability in the aggregate student experience, rather than individual subjects; and 2) returning to first principles to avoid a normative stance a priori.¶ A range of methods is employed adaptively through the process of this alternately broad and deep exploratory study, including: participant observation, interviews, content analysis, questionnaires, social network analysis, bibliometrics, and data clustering. A systemic approach to Canadian and Australian case work captures the diversity of institutional roles and academic motivations at play in adaptation to the EFS agenda.¶ A stasis exists between the literature around higher education curriculum for sustainability and its implementation. The problem is exacerbated by the lack of pedagogical training in most university academics. A long-standing utilitarian sectoral culture and an increasingly job-focused student market further challenge such public-good concepts as sustainability in the academy. Four simple ideas sit at the heart of 35 years of environmental and sustainability education literature, despite changes in jargon: liberal education and broad foundations; interdisciplinarity in problem-solving; cosmopolitan philosophies; and civic action. Relevant disciplinary content includes biology, environmental science, policy, philosophy, human society, economics, and culture. Most of these elements are rare in the Australian sector, which instead offers science and technology-focused environmental programs with flexible requirements. A transition to the human realm is evident in programs targeting sustainability.¶ Curriculum cannot be viewed in isolation, however, as it concerns only one of a university’s many constituencies, and one facet of academic staff scholarship. For example, even in higher education sectors more sympathetic to a diversity of university niches and curricular models, like Canada’s, sustainability offerings operate at a tension from low-cost and low-effort teaching models. So-called ‘umbrella’ networking structures on cross-cutting topics must walk a careful line to be comprehensive yet non-competitive. They present great opportunities for sustainability teaching but are almost uniformly research-focused. A distinct sense emerges that the erosion of the collective identity and activities of academe has weakened the ability of universities to respond to new information and challenges in anything but corporate, isomorphic ways.¶ Two detailed Australian cases of research, research training and curriculum development activities around sustainability paint a rich picture of the agenda. The intractability of fragmentation between disciplines is evident, even in so-called interdisciplinary units. Problem-based topics often do not have an established social network or committee structure, and priorities can differ by budget unit. Disciplines provide identity, peers and cohesive research directions that can be compelling for individual academics. The most fascinating pattern that arises during the mapping of research co-authorship and co-supervisory relationships around sustainability is the bi-directional orientation: academics collaborate outside their departmental home on papers, but within that home to mentor research students. This combination unifies two contrasting theories of social capital transmission – those preferring dense and sparse networks, respectively – and may be ideal. Students then receive consistent messages while gaining access to the largest (non-redundant) set of human and technical resources via their supervisors’ personal networks. This hypothesis should be explored further: if supported, it would have major impacts on the rhetoric around collaboration in interdisciplinary units in particular.¶ Curriculum design processes in utilitarian universities are subject to the same fallibilities in adapting to sustainability as other institutions and the wider society. Change is motivated and moderated by financial imperatives and the scale of thought is often coincident with budgets. Engagement processes are often incomplete or undemocratic, hampered by inadequate leadership and shifting membership. Group learning via research, experimentation or vigorous debate is surprisingly rare. Finally, ad-hoc or project-based academic teams are rarely mandated to tackle the causes of problems, some of which can be intractable, and are limited to treating the symptoms. Incremental pragmatism may be a necessary element to university adaptation for EFS.¶ A number of recommendations are offered to improve interdisciplinarity and university values more generally. Individual academics should: offer additive alternatives to metrics and incentive schemes that maintain existing functions; act on common ground to rebuild a community of scholars; wield to the fullest the freedom in the classroom, and the opportunity to reflect, that university teaching allows; and, continue to debate ideas with passion and rigour, avoiding ‘academic correctness’. University management can contribute by: establishing a clear academic identity for the university beyond ‘excellence’, and supporting firm foundations for students based on that particular vision; taking a proactive view of course review and development and facilitating experimentation in those settings; intentionally fostering interdisciplinary units differently to disciplinary ones; and, establishing and recognising equivalence across a range of successful academic career archetypes.¶ This methodologically innovative work also suggests opportunities for extending the research, including: refining and testing the sustainability canon developed here; better understanding collaborative behaviour and the impact of various models of supervisory teams on student career paths; and, finding better ways of defining, modelling and evaluating interdisciplinary scholarship. Sustainability is likeliest to emerge from a healthy and independent tertiary sector, than one operating as an overt policy instrument.
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33

Ding, Bingfeng. "Variational particle-antiparticle bound states in the scalar Yukawa model". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ59128.pdf.

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34

Lackeos, Kristen. "Bound orbits and virialized systems in a dark energy universe". Thesis, The University of Alabama in Huntsville, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3682684.

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It is shown that at sufficiently large radii dark energy modifies the behavior of (a) bound orbits around a galaxy, and (b) virialized gas in a cluster of galaxies. In (a), there exists a maximum circular orbit beyond which periodic motion is no longer possible, and the evolution of orbits near critical binding is analytically calculable using an adiabatic invariant integral. The finding may have application to wide galaxy pairs. In (b), dark energy necessitates the use of the generalized Virial Theorem to describe gas at the outskirts of a cluster. As a result, gas at a radius of 4 Mpc or above will readily escape. A simple model indicates that this mechanism can lead to mass loss via an outflow.

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35

Baloch, Gul Muhammad M. "Cell-bound phosphatase activity in cotton (Gossypium hirsutum L.) roots". Thesis, Durham University, 1995. http://etheses.dur.ac.uk/5128/.

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A study was made of phosphorus nutrition in cotton cultivars derived from Pakistan with particular reference to phosphatase activity. Cultivars used were Qalandri, Rehmani, Reshami and TH-3/83; Qalandri was used for most of the phosphatase characteristic studies, since this cultivar exhibited the highest germination percentage and seedling establishment. Investigations of soil parameters from cotton growing region of Pakistan were also carried out. Soil pH was above 8.0 in all sites studied. Soil organic component levels were very variable between sites and within sites at different depths. Soil potassium was found to be at levels regarded as being sufficient for sustaining plant growth at all sites. However, levels of combined nitrogen and inorganic phosphate were in the range of values which could be regarded as being limiting to plant growth. The importance of phosphatase in the mobilization of organic phosphorus was therefore apparent. Phosphomonoesterase (PMEase) activity, assayed using two substrates p- nitrophenyl phosphate (pNPP) and 4-methylumbelliferyl phosphate (4-MUP), was investigated and was found associated with roots of hydroponically-grown seedlings. Staining studies indicated that the enzymes were present in the cell wall. Phosphodiesterase activity was also detected in roots, using bis-pNPP as the substrate. PMEase activity was found to have its greatest activity at pH values between 4.0 and 6.0 for all cultivars. In cv Qalandri the optimum pH for PMEase activity was 5 .5 and the optimum temperature was 55 C when assays were incubated over a 1h period using pNPP or 4-MUP as the substrate. Levels of activity were higher using pNPP than with 4-MUP, but an absolute direct comparison could not be made since the concentrations of the individual substrates used were different. Plants grown in phosphate-limitation conditions showed enhanced PMEase activity. Enhancement of PMEase activity was associated with the levels of phosphate in the plant growth nutrient solution rather than with those in the plant itself This activity was highest in 19-day old seedlings, under the conditions of growth employed here. A comparison between cultivars showed some differences in the level of PMEase activity and in the specific pH optimum for enzyme activity. Limitation of combined nitrogen to seedling also resulted m enhanced PMEase even when plants were under phosphate-sufficient conditions. A similar effect of potassium-limitation was also found and this was associated with reduced uptake of phosphate into the seedlings. No effect of magnesium-limitation on PMEase activity was found. A comparison was also made with other plants; cotton. Primula farinosa, rice, wheat and algae. All had associated phosphatase activity, with cotton showing significantly higher root acid phosphatase activity than the other higher plant species. Acidic phosphatase activity was found in the alga Drapamaldia whilst Stigeoclonium had alkaline phosphatase.
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Hutchinson, Carol. "Iron absorption and serum non-transferrin bound iron in humans". Thesis, King's College London (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.429314.

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37

Quesada, John Hadder Sandoval. "Structure of weakly-bound three-body systems in two dimension /". São Paulo, 2016. http://hdl.handle.net/11449/136352.

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Orientador: Marcelo Takeshi Yamashita
Banca: Lauro Tomio
Banca: Marijana Brtka
Resumo: Este trabalho foca no estudo de sistemas de poucos corpos em duas dimensões no regime universal, onde as propriedades do sistema quântico independem dos detalhes da interação de curto alcance entre as partículas (o comprimento de espalhamento de dois corpos é muito maior que o alcance do potencial). Nós utilizamos a decomposição de Faddeev para escrever as equações para os estados ligados. Através da solução numérica dessas equações nós calculamos as energias de ligação e os raios quadráticos médios de um sistema composto por dois bósons (A) e uma partícula diferente (B). Para uma razão de massas mB/mA = 0.01 o sistema apresenta oito estados ligados de três corpos, os quais desaparecem um por um conforme aumentamos a razão de massas restando somente os estados fundamental e primeiro excitado. Os comportamentos das energias e dos raios para razões de massa pequenas podem ser entendidos através de um potencial do tipo Coulomb a curtas distâncias (onde o estado fundamental está localizado) que aparece quando utilizamos uma aproximação de Born-Oppenheimer. Para grandes razões de massa os dois estados ligados restantes são consistentes com uma estrutura de três corpos mais simétrica. Nós encontramos que no limiar da razão de massas em que os estados desaparecem os raios divergem linearmente com as energias de três corpos escritas em relação ao limiar de dois corpos
Abstract: This work is focused in the study of two dimensional few-body physics in the universal regime, where the properties of the quantum system are independent on the details of the short-range interaction between particles (the two-body scatter- ing length is much larger than the range of the potential). We used the Faddeev decomposition to write the bound-state equations and we calculated the three-body binding energies and root-mean-square (rms) radii for a three-body system in two dimensions compounded by two identical bosons (A) and a different particle (B). For mass ratio mB/mA = 0.01 the system displays eight three-body bound states, which disappear one by one as the mass ratio is increased leaving only the ground and the first excited states. Energies and radii of the states for small mass ratios can be understood quantitatively through the Coulomb-like Born-Oppenheimer potential at small distances where the lowest-lying of these states are located. For large mass ratio the radii of the two remaining bound states are consistent with a more sym- metric three-body structure. We found that the radii diverge linearly at the mass ratio threshold where the three-body excited states disappear. The divergences are linear in the inverse energy deviations from the corresponding two-body thresholds
Mestre
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38

Morris, Jennifer Ellen. "Organically bound tritium in sediments from the Severn Estuary, UK". Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/41353/.

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Amersham plc, now GE Healthcare, has discharged both organically bound tritium (OBT) and tritiated water (HTO) into the Severn estuary since 1981. The OBT component of these discharges results in elevated tritium (3H) activities in the sediments and biota of the estuary. A monthly sampling programme, covering February 2000 to May 2004, has provided the first detailed description of the spatial and temporal distribution of 3H activities in surface sediments from the estuary. Four sediment cores were also collected from salt marshes on the northern shore, to obtain longer term records of tritium accumulation. The spatial distribution of sediment 3H activities correlates well with predicted patterns of suspended sediment circulation, with higher activities (up to 3 Bq/g dry weight) in sediments from sites within 10 km of the Amersham plc discharge point and at a greater distance to the east. Temporal variations in the 3H activities of both surface and core sediments are predominantly controlled by the magnitude, composition and pre-discharge treatment of organic 3H discharges from Amersham plc, with secondary sediment composition effects; lower 3H activities are generally measured in sandy/gravelly sediments than in muddy sediments. The dated sediment 3H activity profile in one of the salt marsh cores corresponds to the Amersham plc OBT discharge record, indicating that 3H is persistent in sediments over a period of 25 years. Up to 60 % of the OBT in sediments could only be extracted with strong acids and bases, indicating that it may be composed of large, complex and hydrophobic compounds that are only extractable when lysed, such as humic compounds and/or large biomolecules. The sediment-bound fraction of OBT is predicted to be less than 2 % of the total organic tritium discharged from Amersham plc, however, these molecules do have the potential to remain in salt marsh and subtidal mud patch sediments for decades, unless the sediments are eroded and resuspended, until tritium activities decline by radioactive decay.
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39

Khatib, Alireza. "Positive bound states for nonlinear Schrödinger equations in exterior domains". reponame:Repositório Institucional da UnB, 2017. http://repositorio.unb.br/handle/10482/24638.

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Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Exatas, Departamento de Matemática, 2017.
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Estamos interessados na existência de uma solução positiva para duas classes de equaçãoes não lineares de Schrödinger em domínios exteriores: (veja a fórmula no resumo original) onde N ≥ 2; RN n é um domínio limitado regular, mas não há restrição sobre o seu tamanho, nem qualquer hipótese de simetria e também (veja a fórmula no resumo original) onde N≥3; RN n é um domínio limitado regular, e como acima não há restrição sobre o seu tamanho, nem qualquer hipótese de simetria. Nosso objetivo no primeiro capítulo é mostrar a existência de uma solução positiva do problema (PV ) onde o nível mínimo de energia não pode ser obtido. Usando uma nova abordagem desenvolvida recentemente por Évéquoz e Weth [31], Clapp e Maia [24] e Maia e Pellacci [37] uma solução positiva é encontrada, estendendo os resultados de existência obtidos nos artigos clássicos de Benci e Cerami [9] e Bahri e Lions [6], para não-linearidades gerais não homogêneas, superlineares ou assintoticamente lineares no infinito em um domínio exterior. O estudo de ondas solitárias de equações de Schrödinger não lineares ou equações não lineares de Klein-Gordon é modelado por (PV ) com = RN. Da mesma forma, problemas de fronteira de limite exterior podem estar associados a modelos de fluxos de estado estacionário na dinâmica de fluidos (ver [32]) e ao problema eletrostáatico de capacitores (veja [27], Volume 1, Capítulo II), por exemplo. Nossa contribuição principal no primeiro capítulo foi estender o resultado de Bahri e Lions [6] para f não homogêneas, sem hipótese de simetria em V ou . Além disso, permitimos que a função não linear f seja uma função menos suave, apenas em C1, melhorando as hipóteses em [24] e [37] onde esta foi considerada em C3 por razões técnicas (veja o Lemma 3.3 em [24]). O método que empregamos para resolver (PV ) tem muitas ideias em comum com [24, 37]. Do mesmo modo, o trabalho de [31] forneceu algumas ferramentas úteis e informações para estimativas, mesmo que seu problema seja para f super-linear em todo RN e usa a variedade de Nehari generalizada. Segundo o nosso conhecimento, os resultados que apresentamos aqui são novos e estendem os trabalhos anteriores encontrados na literatura para uma classe de problemas em domínios exteriores. Consideramos o problema elíptico -Δu + V (x)u = f(u) ; u 2 H1 0() (PV ) onde N ≥ 2, RN n _ BK(0) a bola do raio K e centro na origem em RN; de fato RN n é limitado, @ é regular e u 2 H1 0() e V é um potencial que satisfaça as condições: (V1) V 2 C0() , infx2 V (x) > 0 e lim jxj!+1 V (x) = V1; (V2) V (x) _ V1 + Cejxj, onde C > 0 e > 2 p V1. As condições que consideramos na não linearidade f são as seguintes: (veja a fórmula no resumo original) A função s 7! f(s)=s é crescente em s 2 (0;+1); Teorema A: Sob hipóteses (V1) (V2), (f1) (f5) e (U), o problema (PV ) tem uma solução positiva u em H1 0(). No segundo capítulo, procuramos uma solução positiva para o problema (P) onde um nível mínimo de energia não pode ser atingido. Aqui, estudamos não linearidades não homogêneas gerais, com condição de crescimento em f de potência dupla, que se comporta como uma potência subcrítica up no infinito e uma potência supercrítica uq perto da origem, onde p < 2_ < q, em qualquer domínio exterior. Usando as ideias introduzidas em [24, 25, 37], estendemos os resultados de V. Benci e A. Micheletti [12] removendo qualquer suposição no tamanho da abertura RN n . Neste capitulo o método utilizado para encontrar uma solução de (P) como um ponto crítico do funcional associado à equação, restrito à variedade de Nehari do funcional, é bastante natural por causa da geometria deste funcional devido ao crescimento superquadrático dos termos não lineares. Entretanto, a novidade em nossa aproximação é encontrada principalmente em alguns resultados técnicos delicados, como as estimativas exatas sobre o decaimento da solução de nivel minimo de energia do problema em RN e suas implicações na interação de duas cópias distintas e distantes desses solitões. Por outro lado, um novo resultado de compacidade numa nova versão do Lema de Lions, que nos permite contornar as dificuldades criadas por um domínio não simétrico ilimitado e abraçar um problema muito geral.
We obtain necessary and sufficient conditions for a curve in two sphere to be a shortening curve flow soliton. From this result, we describe the geometry of the solitons in a twodimensional sphere. In addition, we visualize some examples of such curves. We prove that, a hypersurface in a space form is an initial condition for a solution of the mean curvature flow by parallel hypersurfaces if, and only if, it is isoparametric. We apply this theorem to obtain solutions of the mean curvature flow starting from isoparametric hypersurfaces of space forms. In this work, we consider two problems. First we establish the existence of a positive solution for semilinear elliptic equation in an exterior domain {−∆u+V (x )=F(u),∈Ω u H (PV ) u H0 1 (Ω) where N ≥ 2, R N \Ω is regular bounded domain but there is no restriction on its size, nor any symmetry assumption. The nonlinear term f is a non homogeneous, asymptotically linear or superlinear function at infinity. Moreover, the potential V is a positive function, not necessarily symmetric. The existence of a solution is established in situations where this problem does not have a ground state. In the second problem we consider the Null Mass nonlinear field equation ¿ −∆u=F(u) ,∈Ω u>0, u∨¿ϬΩ=0, ¿ where R N \ Ω is regular bounded domain and like as above there is no restriction on its size, nor any symmetry assumption. The nonlinear term f is general non- { −∆u+V (x )=F(u),∈Ω u H0 1 (Ω) homogeneous non-linearities with double-power growth condition. The existence of bound state solu- tion is established in situations where this problem does not have a ground state.
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40

Draper, Kati Elizabeth. "Increased structure-bound proteolytic activity in maturing dystrophic skeletal muscle". Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/31735.

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Duchenne Muscular Dystrophy (DMD) is a severe X-linked progressive muscle wasting disease resulting from the absence of the membrane-associated protein dystrophin and the secondary components of the dystrophin-glycoprotein complex. Although the genetic basis of the disease has been known for over 15 years, the onset mechanism of the disease is not yet known and no treatment is yet available to significantly increase the lifespan of DMD patients. Increased levels of intracellular calcium have been noted in dystrophic muscle (Turner et al., 1991) and increased intracellular levels of calcium in skeletal muscle lead to increased levels of calcium-dependent proteolysis (Zeman et al., 1985). Increased levels of calpain, a calcium-dependent protease have been reported as early as age 4 weeks in mdx (dystrophin-deficient) mice (Spencer et al., 1995). Increased calpain activity has been demonstrated in mdx myotubes (Alderton et al., 2000a). There is also evidence of a role for calpain in DMD, but the contribution of calpain activity to the onset of DMD has not yet been determined. The purpose of this study was to test the hypothesis that increased calpain activity contributes to the onset of DMD in maturing (birth to weaning) dystrophic skeletal muscles and to determine if increased calpain activity was due to the relative distribution of calpain and calpastatin, calpainâ s endogenous inhibitor. Calpain activity was assessed in quadriceps and diaphragm muscle homogenate supernatant and pellet fractions from C57BL/6 control and mdx mice at ages 7, 14, and 21 days. Total calpain and calpastatin content were determined by Western analysis. In both the quadriceps and diaphragm samples, calpain activity in the supernatant increased with age. There was a significant increase (47.7%; p<0.05) in calciumdependent calpain activity in mdx quadriceps pellet compared to control at age 7 days. In the quadriceps at age 7 days, calpain activity in the pellet in the presence of calcium was significantly greater than at age 14 (61.2%) and 21 days (52.6%; p<0.05). In the diaphragm, there were no significant differences in pellet activity in either the presence or absence of calcium at any age between control and mdx samples. In both control and mdx diaphragms, pellet calpain activity in the absence compared with the presence of calcium was significantly greater at both age 7 (control, 46.4%; mdx, 45.4%) and 14 days (control, 42.4%; mdx, 43.6%; p<0.05). At age 21 days, both control and mdx calpain activities in the diaphragm supernatants in the presence of calcium were significantly greater than those at ages 7 (control, 66.7%; mdx, 72.1%) and 14 days (control, 39.9%; mdx 49.5%; p<0.05). In general, there were no differences in total calpain and calpastatin content that would account for the differences in calpain activity. There were similar patterns of calpain activity and total calpain and calpastatin content in both control and mdx samples, suggesting a similar pattern of development in control and mdx muscle from ages 7-21 days. The increase in calcium-dependent calpain activity in mdx quadriceps pellet compared to control at age 7 days may be due to differences in regulation and/or distribution of the calpain system early in mdx maturation compared to control. From the present study, the role of calpain in the onset of DMD appears to be minor if global calcium-dependent activity is evaluated.
Master of Science
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41

Riley, Amanda L. "Effectiveness of Fluorogold Bound Conjugate in Imaging Mice Neuroendocrine Circuits". Kent State University Honors College / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1587996298161636.

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42

Safi, George. "Prometheus bound: the evolution of structure in relation to knowledge". Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/5587.

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Prodana, Marija. "Ecotoxicology of biochar-bound PAHs in runoff from amended soils". Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/8612.

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Mestrado em Estudos Ambientais (JEMS)
While the appeal of biochar application to soils continues growing, so does the concern about the possibility for surface and groundwater contamination, due to biochar-bound contaminants, such as polycyclic aromatic hydrocarbons (PAHs). Up to now, insufficient information exists on to what extent that PAH fraction can become bioavailable in the soil solution over time and which are the associated potential ecotoxicological implications, as a result of processes such as runoff. This pilot study aimed to evaluate the ecotoxicological effects of biochar-bound PAHs in runoff from soils amended with biochar, having been identified as a gap in current knowledge. Combining soil wetting-drying cycles with PAH water-extraction, a good first approach was obtained for evaluating their potential occurrence in soil solution, while taking into consideration natural soil processes and soil-biochar interactions. LUFA 2.2 soil alone and containing biochar (at usual field rates, 4% ww-1) was subjected to 0, 6 or 12 (sampling times ST-0, ST-1 or ST-2 respectively) consecutive wetting-drying cycles, after which the corresponding test elutriates were extracted. Alongside PAH quantification, a battery of standard aquatic bioassays were used with representative test organisms (Vibrio fischeri, Pseudokirchneriella subcapitata and Daphnia magna), for a robust ecotoxicological evaluation of the biochar-soil (BS) aqueous extracts, while LUFA soil elutriates were used as control (SS). Compared to the control (SS) and to elutriates of biochar alone (B), BS extracts showed the highest total PAH contents, suggesting that a relevant PAHs fraction in biochar-amended soil may be easily water-extractable, perhaps due to interactions between biochar and soil components. Yet, the number of soil wet-dry cycles on aqueous total PAH concentrations was often not significant, suggesting that natural soil wetting-drying events might have little influence on increased PAH bioavailability in pore water, on the short term. BS extracts induced toxicity in all tested species, although its extent was species-specific and varied with the number of wet-dry cycles. For example, the highest sensitivity was observed in the acute assay with D. magna exposed to BS extract for ST-0, while P. subcapitata and V. fischeri were most sensitive when exposed to BS, ST-1. Nevertheless, sub-lethal effects were also observed for P. subcapitata and V. fischeri, when exposed to the control (SS) extracts. Although the levels of individual PAHs in all samples (BS, SS and B) were below the acutely toxic concentrations reported in the literature, it cannot be excluded the combined effects of the multiple PAHs in the test elutriates when explaining these results. Furthermore, although individual PAH concentrations were below that to produce acute effects, chronic effects can occur, and therefore, long-term exposure to these elutriates and using additional non-target species, various biochars and soil properties are necessary for a full evaluation of the bioavailability and ecotoxicity of biochar-bound PAH contaminants in runoff from treated soils.
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Théveniaut, Hugo. "Impurity Bound States in Variants of the Kitaev Spin Liquid". Thesis, KTH, Fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203228.

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Stetler, Pepper. "Bound vision reading the photographic book in the Weimar Republic /". Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 406 p, 2009. http://proquest.umi.com/pqdweb?did=1833647361&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Sherren, Katherine Dove. "Sustainability bound? : a study of interdisciplinarity and values in universities /". View thesis entry in Australian Digital Theses Program, 2008. http://thesis.anu.edu.au/public/adt-ANU20080507.100919/index.html.

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47

Schmitt, Casey. "Bound among Nations: Labor Coercion in the Seventeenth-Century Caribbean". W&M ScholarWorks, 2018. https://scholarworks.wm.edu/etd/1530192836.

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This dissertation uses bound labor as a lens for understanding the development of law, identity, and imperialism in the early seventeenth-century Caribbean. The Spanish, English, and French depended on bound labor, especially for their Caribbean possessions. However, the geographic proximity of their colonies and frequent warfare forced Europeans to negotiate across imperial boundaries to develop regional slave systems. at the heart of these negotiations, and the law of nations that they drew from, was the issue of reciprocity. I argue that Europeans in the Caribbean, especially the English and the French, created a transnational legal understanding that protected their ability to hold people in bondage. In order to create recognizable parameters around bound labor, Europeans referred to themselves as nations in their negotiations with one another. In other words, Europeans in the Caribbean negotiated over who could be forced into what kind of labor arrangement as nations, thereby leaving individuals seen as outside of the state, especially people of Indian and African descent, vulnerable to enslavement – no matter their legal status as subjects of European crowns. The construction and maintenance of regional slave systems depended on the development of international law in the seventeenth-century Caribbean.
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Dowdy, Garrett Ryan. "Using semidefinite programming to bound distributions in chemical engineering systems". Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121820.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2019
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 329-334).
Distributions appear in many forms in models of chemical engineering systems. Such distributions account for microscopic variability in the system while simultaneously explaining its macroscopic properties. These macroscopic properties are often of practical engineering interest. Thus, it is valuable to be able to characterize the underlying distributions that affect them. Recently, in the mathematical programming literature, it was shown that it is possible to optimize a linear objective over a set of distributions by solving a specific type of convex optimization problem called a semidefinite program (SDP). From a theoretical perspective, SDPs can be solved efficiently. Furthermore, there exist several off-the-shelf codes designed specifically to solve SDPs. This thesis demonstrates how these theoretical and practical advancements can be applied to chemical engineering problems featuring distributions. Broadly speaking, it shows how, given limited information about a distribution, one can use SDPs to calculate mathematically rigorous bounds on various descriptions of that distribution. Two specific types of distributions are examined: particle size distributions and probability distributions arising in stochastic chemical kinetics, with the majority of the thesis covering the latter topic. The SDP-based bounding method described herein provides a rigorous solution to the long-standing "moment closure problem" arising in stochastic chemical kinetics. Moreover, it provides a means of analyzing of stochastic chemical kinetic systems which cannot be effectively analyzed using existing methods. The bounding method does have some limitations, and we present several refinements of the method aimed at overcoming these limitations. Finally, we discuss several ideas through which the bounding method may be further improved, which have not yet been explored.
by Garrett Ryan Dowdy.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Chemical Engineering
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49

Janvier, Camille. "Coherent manipulation of Andreev Bound States in an atomic contact". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS217/document.

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Des états électroniques localisés apparaissent dans les liens faibles entre électrodes supraconductrices : les états d’Andreev. Les expériences présentées dans cette thèse explorent les propriétés de cohérence quantique de ces états, en utilisant comme liens faibles des contacts à un atome entre des électrodes d’aluminium. Les contacts atomiques sont intégrés dans une cavité microonde qui permet à la fois de les isoler et de les sonder.Dans une première série d’expériences, il est montré qu’on peut utiliser les états d’Andreev pour définir un bit quantique, le « qubit d’Andreev », qu’on contrôle à l’aide d’impulsions micro-onde.Les mesures des temps de vie de cohérence de ce qubit sont analysées en détail.Dans une deuxième série d’expérience,l’interaction entre le qubit d’Andreev et le résonateur micro-onde est utilisée pour quantifier le nombre de photons présents dans le résonateur en fonction de la puissance d’impulsions microonde à sa fréquence propre.Enfin, des sauts quantiques et des sauts de parités ont observés dans des mesures continues de l’état du qubit d’Andreev
Localized electronic states, called Andreev bound states, appear in weak-links placed between superconducting electrodes. The experiments presented in this thesis explore the coherence properties of these states. Single atom contacts between aluminum electrodes are used as weak links. In order to isolate and probe these states, the atomic contacts are integrated in amicrowave cavity.In a first series of experiments, it is shown that Andreev states can be used to define a quantumbit, “the Andreev qubit”, which is controlled using microwave pulses.Measurements of the lifetime and coherence time of this qubit are thoroughly analyzed.In a second series of experiments, the interaction between the Andreev qubit and the microwave cavity are used to determine the number of photons present in the cavity as a function of the power of microwave pulses at its eigenfrequency.Finally, quantum and parity jumps are observed in continuous measurements of the state of the Andreev dot
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50

Nancarrow, Cindy. "Bound to the borders: Representing refugees in the Australian space". Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/72792/4/Cindy_Nancarrow_Thesis.pdf.

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This project consists of a novel and an exegesis that explore the use of fiction to counter negative hegemonic representations of refugees in Australia. The possibilities of using Australian spaces, including border spaces, to reveal tensions surrounding refugee belonging and to highlight the reconfiguration of border sites in the Australian imaginary, is a particular focus of this work.
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