Sandy beach ecosystems have been studied worldwide; however, ecological data are sparse for the extensive barrier islands of Florida. Accordingly, I investigated the feeding patterns of the ghost crab (Ocypode quadrata), a dominant omnivore inhabiting beaches along the Floridian coast. Density data was collected for ghost crabs and swash macroinfaunal prey. In addition, I utilized stable isotopes in conjunction with the mixing models IsoSource and SIAR to characterize diets of ghost crabs across three barrier islands in spring and summer 2011. Results showed that ghost crabs at Cayo Costa feed primarily on swash macroinfauna, while those from Anclote Key shifted their diet to one comprised primarily of semi-terrestrial amphipods. However, at Honeymoon Island, ghost crab isotopic signatures were best explained by a mixed diet of both macroinfauna and wrack-associated prey. The unique consumption of wrack fauna at Anclote Key co-occurs with comparatively low infaunal densities and biomass, and modified ghost crab behavior due to trait-mediated effects. My results are novel because they suggest that wrack-associated fauna may be an important food source for ghost crabs in certain beach regimes.

This study presents an improved ghost-cell immersed boundary approach to represent a solid body in compressible flow simulations. In contrast to the commonly used approaches, in the present work ghost cells are mirrored through the boundary described using a level-set method to farther image points, incorporating a higher-order extra/interpolation scheme for the ghost cell values. In addition, a shock sensor is in- troduced to deal with image points near the discontinuities in the flow field. Adaptive mesh refinement (AMR) is used to improve the representation of the geometry efficiently. The improved ghost-cell method is validated against five test cases: (a) double Mach reflections on a ramp, (b) supersonic flows in a wind tunnel with a forward- facing step, (c) supersonic flows over a circular cylinder, (d) smooth Prandtl-Meyer expansion flows, and (e) steady shock-induced combustion over a wedge. It is demonstrated that the improved ghost-cell method can reach the accuracy of second order in L1 norm and higher than first order in L∞ norm. Direct comparisons against the cut-cell method demonstrate that the improved ghost-cell method is almost equally accurate with better efficiency for boundary representation in high-fidelity compressible flow simulations. Implementation of the improved ghost-cell method in reacting Euler flows further validates its general applicability for compressible flow simulations.

The essay analyses three works of supernatural horror fiction written by different authors over various periods of time. These three works are “The Old Nurse’s Story” by Elizabeth Gaskell, “Lost Hearts” by M. R. James and The Small Hand by Susan Hill. The argument of the essay is that all three stories diverge from the conventions of Gothic horror stories by including a child in the role of victim and ghost. This makes the stories more frightening since they challenge the reader’s expectations of children’s innocence. In order to discern how the stories diverge from the norm the essay explores the traditional conventions of the genre such as setting, narrator, the structure of the time-frame, the buildup of mystery, the observer of the ghost, the ghost itself, and finally the visitation. In the end, the essay finds that all three of the analysed stories fit the formula of a conventional Gothic horror story, using similar methods for building up suspense and fear in the reader. Moreover, all three enhance the effect through the combination of evil and innocence in the children.

The Victorian governess occupied a difficult position in Victorian society. Straddling the line between genteel and working-class femininity, the governess did not fit neatly into the rigid categories of gender and class according to which Victorian society organized itself. This troubling liminality caused the governess to become implicitly associated with another disturbing domestic presence caught between worlds: the Victorian literary ghost. Using Henry James’s novella The Turn of the Screw as a touchstone for each chapter, this thesis examines how the spectral mirrors the governess’s own spectrality – that is, her own discursive construction as a psychosocially unsettling force within the Victorian domestic sphere.

Various roles for operators in human-machine systems have been proposed. This thesis shows that all of these views have in common the fact that operators perform best when given feedback that matches their intent. Past studies have shown that position control is superior to rate control except when operating large-workspace and/or dynamically slow manipulators and for exact tracking tasks. Operators of large-workspace and/or dynamically slow manipulators do not receive immediate position feedback. To remedy this lack of position feedback, a ghost arm overlay was displayed to operators of a dynamically slow manipulator, giving feedback that matches their intent. Operators performed several simple one- and two-dimensional tasks (point-to-point motion, tracking, path following) with three different controllers (position control with and without a ghost, rate control) to indicate how task conditions influence operator intent. Giving the operator position feedback via the ghost significantly increased performance with the position controller and made it comparable to performance with the rate control. These results were further validated by testing coordinated position control with and without a ghost arm and coordinated rate control on an excavator simulator. The results show that position control with the ghost arm is comparable, but not superior to rate control for the dynamics of our excavator example. Unlike previous work, this research compared the fuel efficiencies of different HMIs, as well as the time efficiencies. This work not only provides the design law of matching the feedback to the operator intent, but also gives a guideline for when to choose position or rate control based on the speed of the system.

Thesis (Ph. D.)--Emory University, 2008. / Title from PDF title page (viewed on May 25, 2010) Available through UMI ProQuest Digital Dissertations. Includes bibliographical references (leaves 236-269). Also issued in print.

Thesis (MA (English))--Stellenbosch University, 2008. / This dissertation rests on the assumption that the literary text is fundamentally part of the world from which it emerges. Following Heidegger's understanding of the work of art as a form of unconcealment, it argues that Michael Ondaatje's fictional work Anil's Ghost discloses the particular, historically contingent conditions that determine the ethical relations people are cast into during a time of war in the present era of globalization. The novel interrogates the idea of truth in its meta-fictional discourse and stakes out the grounds of its own fictional truth in contra-distinction to truth as fact offered by Western empiricism. Alongside the implicit criticism of Western epistemology, the novel mounts a critique of the universal human rights discourse and suggests that an ethical approach to the humanitarian crisis in Sri Lanka is preferable to a political solution imposed from the outside. War is presented as a radically embodying event in which the body is made vulnerable to death and injury: and the ethical imperative to alleviate physical suffering is identified as the most immediate and appropriate response to the crisis of war. Following Levinas, ethics is understood to transpire in the corporeal relation between individuals. By attending in detail to the embodied experience of being in the world, the novel prepares the ground for an ethics of the body that is closely aligned to the ethics as first philosophy espoused by Levinas. The dissertation argues throughout that the novel discloses the nature of ethical relations between people in the world by means of its aesthetic forms of language. The domain of the ethical and aesthetics are thus commensurate.

No abstract available / English Studies / M.A. (English)

Localizada às margens da grande metrópole paulistana, a cidade de Mogi das Cruzes realiza uma espetacular festa para o Divino Espírito Santo. Esta dissertação focaliza as formas expressivas de devoção que ocorrem na superfície da cidade e busca penetrar em camadas mais profundas da experiência dos devotos na tentativa de desvendar os elementos aparentemente arredios que surgem como força transformadora durante os dias de festa. / Located on the edges of the great paulistana metropolis, the city of Mogi das Cruzes carries through a spectacular celebration for the Holy Ghost. This master thesis focuses the expressive forms of devotion that occur on the surface of the city and search to penetrate in layers deeper of the experience of the worshippers in the attempt to unmask the apparently timorous elements that appear as transforming force during the days of celebration.

Rapporten undersöker om det är möjligt att använda Clonezilla för distribuerad installation av Windows Vista som alternativ till Symantec Ghost. Ett ytterligare krav är att installationen ska vara automatiserad och inte kräva något extra arbete efter installationens slut. Dessutom ska datorerna vara redo att användas i en Windows-domän efter en färdig installation. Programmet Clonezilla är av typen open source och är fritt att använda medan Symantec Ghost är en kommersiell produkt som kräver flertalet licenser beroende på antalet datorer. Clonezilla körs i Linux och saknar grafiskt gränssnitt, Symantec däremot har ett eget gränssnitt för att överskådligt hantera datorer och distribuera operativsystem i välkänd Windows-miljö. Båda lösningarna testas under flera praktiska experiment i labbmiljö. De två programmen jämförs och utvärderas gällande prestanda och användarvänlighet.  Resultaten visar på att skillnaden gällande prestanda är marginell. Gällande användarvänlighet är skillnaden för de båda programmen större då Symantec erbjuder ett grafiskt gränssnitt tillsammans med hjälpavsnitt för produkten. Båda lösningarna fungerar för ändamålet och har olika fördelar respektive nackdelar.