Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 44 for “"Cloak"”.
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Investigation of defects on acoustic scattering in cloak by molding process
… was developed in order to replicate the acoustic cloak. The metal was cast into a stretchable PDMS mold, which was cast from micromachined aluminum cloak. For the PDMS mold, the mold release agent, trichlorosilane ([tridecafluoro-1,1,2,2-tetrahydrooctyl] trichlorosilane), was enhanced to imprint …
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Mediations from Under the Cloak: Christianity, Trauma, and Reconciliation in Brennu-Njáls Saga
This thesis explores the representation and testimony of trauma in the medieval Brennu-Njáls saga. Beginning with an outline of contemporary trauma studies, this thesis examines the repercussions narratives of social trauma. The chapters 100-105, the burning of Njal and Flosi’s dream show the …
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Creation of a covert communications network for evasion of surveillance
… such are subject to some degree of interference. Cloak is a textual communication network created to hide the existence of the network itself from an outside observer, such as a repressive government or corrupt corporation. Cloak does not use the public internet, and as such would evade the …
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Study on transformation-based invisibility cloaks
… opportunity for realizing invisibility cloaking. Coordinate transformation theory predicts that by squeezing the space to form a "hole" in it, any object inside the "hole" becomes completely invisible from electromagnetic waves. A metamaterial shell can thus be designed to mimic this …
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Acoustic metamaterial design and applications
… examples these years is the invisible cloak. Such a device is proposed to render the hidden object undetectable under the flow of light or sound, by guiding and controlling the wave path through an engineered space surrounding the object. However, the cloak designed by transformation …
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Advances in Complex Electromagnetic Media
… structures such as the invisibility cloak.</p><p>In this dissertation the tools used in the field of transformation optics will be explored and expanded. Several new designs are discussed, each of which expands upon the ideas that have previously been employed in the field. To begin, …
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Hierarchical Semiconductor, Metal and Hybrid Nanostructures and the Study of their Light-matter Interactions
… metamaterial designed to function as an optical cloak in the visible range. A composite material consisting of an array of silver nanowires (NWs) in a dielectric host has been produced based on the theory of a non-magnetic optical cloak. The required radial array of silver NWs was achieved by …
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Rheumatic endocarditis in children
… To term a condition "rheumatic" is too often to cloak one's ignorance of what the true diagnosis is. In spite of the careful and tedious researches of such men as Church, Triboulet, Still, Poynton, Paine,Singer, etc. our knowledge of what we term "Rheumatism" is still imperfect. The pathology has …
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Design and Experimental Applications of Acoustic Metamaterials
… and we also realize a 2D acoustic ground cloak in air. In addition, we explore the performance of some novel applications (a 2D acoustic black hole and a three-dimensional acoustic cloak) using the currently available acoustic metamaterials. In order to overcome the limitations of our …
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Reduction Of Mutual Coupling In Antenna Technology Using Elliptically Shaped Metasurfaces
… is done first using a graphene monolayer as a cloak to decrease mutual coupling and restore radiation patterns for closely spaced antennas at THz frequencies. The introduction of the graphene monolayer was also extensively studied in regards to the effect on the radiation properties of the …
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God is the Best Guardian: Islamic Talismanic Shirts from the Gunpowder Empires
… khila' (robe of honor) and the khirqa (the Sufi cloak) provide important insights into how garments become the physical markers of bodily interactions. By reinforcing the relationship between textiles and the human body within these systems, it becomes clear that Islamic talismanic shirts amplify …
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The dance of many partners: A case study of interorganizational collaboration in the social services sector
… of interorganizational collaboration will cloak with invisibility the reality of present power disparities while struggling in practice to manage their effect. To recognize asymmetrical relations of power in collaboration, theories of interorganizational collaboration and praxis must …
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A Band of Sisters: Female Detectives, Authority, and Fiction from 1864 to the 1930s
… Similarly, mystery and detective fiction wear a cloak of conservatism to gain closer access to their audience in order to effect change. While several stories and characters re-establish order and the status quo, several others allow for the possibility for the world to remain transgressive, …
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The chronic and acute effects of whole body vibration training
Whole body vibration training (WBVT) has gained a lot of interest for its proposed benefits across a range of populations both active and injured. The purpose of the present thesis was to test the efficacy of WBVT in terms of injury rehabilitation and performance enhancement amongst professional …
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Born she is the divine Christ child : female figurations of Christ in Black Atlantic literature, theatre, and cinema
… semi-god of capitalism under the protective cloak of the Christianizing mission. In my analysis of works, I offer a comparative analysis of the rewriting of the Christ narrative in three novels: Toni Morrison's Paradise (1998), Simone Schwarz-Bart's Pluie et vent sur Telumée miracle (1972), …
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The liability of directors for fraudulent and/or reckless trading: Section 424 of the Companies Act 61 of 1973
… have come under the_ spotlight as a 'cloak' and a 'sham', 1 the fact remains that a company as a separate legal personality comes into existence on the date of incorporation and that no recourse can be f6unded on the proposition that a company's misdemeanours cause it ipso facto to …
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