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Text in Afrikaans / Spieel, kamer van spieels, mise-en-abyme, representasie, ensovoorts, is almal begrippe wat met die nosie van selfrefleksiwiteit in verband gebring word. Hoewel selfrefleksiwiteit nie 'n nuwe verskynsel is nie, is die vraag waarom dit juis vandag so akuut in die literer-teoretiese diskoers neerslag vind. Dit geld veral teoretiese bydraes oor die Postmodernisme en/of Postmodemistiese tekste. Hieruit kan 'n mens aflei dat daar 'n direkte verband tussen selfrefleksiwiteit en die Postmodernisme bestaan. Hierdie studie is dan primer gemteresseerd in die wyses waarop die Postmodernistiese dramafteater die nosie van selfrefleksiwiteit in die enkoderingsproses in diens neem. Daarbenewens word ondersoek ingestel na die invloed wat die konsep van vervreemding in die twintigste-eeuse dramajteater op die verskillende beskouings van selfrefleksiwiteit gehad het. Die uiteindelike oogmerk is om aan te toon dat selfrefleksiwiteit in die Postmodernistiese dramafteater gevestigde aannames oor kuns as spieelbeeld van die werklikheid omverwerp. / Mirror, hall of mirrors, mise-en-abyme, representation, et cetera are all concepts associated with the notion of self-reflexivity. While self-reflexivity is not a new phenomenon, the question is why, in our time, it should be so acutely present in the discourse of literary theory - especially in theoretic contributions on Postmodernism and/or Postmodernist texts. One is lead to conclude that self-reflexivity and Postmodernism are directly linked. This study, then, focuses primarily on how Postmodernist drama/theatre employs the notion of self-reflexivity in the encoding process. It also explores the impact of the concept of alienation in twentieth century drama/theatre on the various views of self-reflexivity. The fmal objective is to show that self-reflexivity in Postmodernist drama/theatre challenges ftxed suppositions about art as a reflection of reality. / Afrikaans, Theory of Literature / M.A. (Theory of Literature)

Text in Afrikaans / Spieel, kamer van spieels, mise-en-abyme, representasie, ensovoorts, is almal begrippe wat met die nosie van selfrefleksiwiteit in verband gebring word. Hoewel selfrefleksiwiteit nie 'n nuwe verskynsel is nie, is die vraag waarom dit juis vandag so akuut in die literer-teoretiese diskoers neerslag vind. Dit geld veral teoretiese bydraes oor die Postmodernisme en/of Postmodemistiese tekste. Hieruit kan 'n mens aflei dat daar 'n direkte verband tussen selfrefleksiwiteit en die Postmodernisme bestaan. Hierdie studie is dan primer gemteresseerd in die wyses waarop die Postmodernistiese dramafteater die nosie van selfrefleksiwiteit in die enkoderingsproses in diens neem. Daarbenewens word ondersoek ingestel na die invloed wat die konsep van vervreemding in die twintigste-eeuse dramajteater op die verskillende beskouings van selfrefleksiwiteit gehad het. Die uiteindelike oogmerk is om aan te toon dat selfrefleksiwiteit in die Postmodernistiese dramafteater gevestigde aannames oor kuns as spieelbeeld van die werklikheid omverwerp. / Mirror, hall of mirrors, mise-en-abyme, representation, et cetera are all concepts associated with the notion of self-reflexivity. While self-reflexivity is not a new phenomenon, the question is why, in our time, it should be so acutely present in the discourse of literary theory - especially in theoretic contributions on Postmodernism and/or Postmodernist texts. One is lead to conclude that self-reflexivity and Postmodernism are directly linked. This study, then, focuses primarily on how Postmodernist drama/theatre employs the notion of self-reflexivity in the encoding process. It also explores the impact of the concept of alienation in twentieth century drama/theatre on the various views of self-reflexivity. The fmal objective is to show that self-reflexivity in Postmodernist drama/theatre challenges ftxed suppositions about art as a reflection of reality. / Afrikaans, Theory of Literature / M.A. (Theory of Literature)

The degradation of astronomical images caused by atmospheric turbulence will be much more severe in the next generation of terrestrial telescopes and its compensation will require deformable mirrors with up to tens-of-thousands of actuators.<p>Current designs for these correctors consist of scaling up the proven technologies of flexible optical plates deformed under the out-of-plane action of linear actuators. This approach will lead to an exponential growth of cost with the number of actuators, and in very complex mechanisms.<p><p>This thesis proposes a new concept of optical correction which is modular, robust, lightweight and low-cost and is based on the bimorph in-plane actuation.<p><p>The adaptive mirror consists of segmented identical hexagonal bimorph mirrors allowing to indefinitely increase the degree of correction while maintaining the first mechanical resonance at the level of a single segment and showing an increase in price only proportional to the number of segments.<p><p>Each bimorph segment can be mass-produced by simply screen-printing an array of thin piezoelectric patches onto a silicon wafer resulting in very compact and lightweight modules<p>and at a price essentially independent from the number of actuators.<p><p>The controlled deformation of a screen-printed bimorph mirror was experimentally achieved with meaningful optical shapes and appropriate amplitudes; its capability for compensating turbulence was evaluated numerically. The generation of continuous surfaces<p>by an assembly of these mirrors was numerically simulated and a demonstrator of concept consisting of 3 segments was constructed. / Doctorat en Sciences de l'ingénieur / info:eu-repo/semantics/nonPublished

Erfolgreiche Community-Unterstützung erfordert die Bereitstellung von Möglichkeiten zur Interaktion mit den Community-Plattformen abseits von Desktop-PCs. In diesem Beitrag stellen wir eine Anwendung zur Vermittlung von Community-Awareness auf Community-Treffen vor, die sich auf große interaktive Wandbildschirme stützt. Die Arbeiten stellen erstens einen Ausgangspunkt für weitere Arbeiten an einer integrierten Unterstützung von Community-Treffen dar, und bieten zweitens ein Beispiel für andere Anwendungen zur Unterstützung von Communtiy-Awareness mit Community-Mirrors.

Erfolgreiche Community-Unterstützung erfordert die Bereitstellung von Möglichkeiten zur Interaktion mit den Community-Plattformen abseits von Desktop-PCs. In diesem Beitrag stellen wir eine Anwendung zur Vermittlung von Community-Awareness auf Community-Treffen vor, die sich auf große interaktive Wandbildschirme stützt. Die Arbeiten stellen erstens einen Ausgangspunkt für weitere Arbeiten an einer integrierten Unterstützung von Community-Treffen dar, und bieten zweitens ein Beispiel für andere Anwendungen zur Unterstützung von Communtiy-Awareness mit Community-Mirrors.

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MagAO is the adaptive optics instrument at the Magellan Clay telescope at Las Campanas Observatory, Chile. MagAO has a 585-actuator adaptive secondary mirror and 1000-Hz pyramid wavefront sensor, operating on natural guide stars from R-magnitudes of -1 to 15. MagAO has been in on-sky operation for 166 nights since installation in 2012. MagAO's unique capabilities are simultaneous imaging in the visible and infrared with VisAO and Clio, excellent performance at an excellent site, and a lean operations model. Science results from MagAO include the first ground-based CCD image of an exoplanet, demonstration of the first accreting protoplanets, discovery of a new wide-orbit exoplanet, and the first empirical bolometric luminosity of an exoplanet. We describe the status, report the AO performance, and summarize the science results. New developments reported here include color corrections on red guide stars for the wavefront sensor; a new field stop stage to facilitate VisAO imaging of extended sources; and eyepiece observing at the visible-light diffraction limit of a 6.5-m telescope. We also discuss a recent hose failure that led to a glycol coolant leak, and the recovery of the adaptive secondary mirror (ASM) after this recent (Feb. 2016) incident.

Este trabalho é um estudo realizado em torno das principais curvas cônicas estudadas por alunos do ensino básico: parábola, elipse e hipérbole. A ideia central do trabalho é a autosuficiência, pois apresentamos todas as ferramentas matemáticas necessárias para o entedimento desses entes e suas aplicações, desde os axiomas iniciais da geometria plana até as definições formais das cônicas e demonstrações de suas propriedades. Espera-se que uma pessoa não especializada em matemática, ao ler o trabalho, entenda toda a matemática no entorno das aplicações dessas cônicas. / This work is a study carried out around the main conic curves studied by elementary school students: parabola, ellipse and hyperbola. The main idea of this work is to be self-contained, starting from the basic axioms from the geometry and after we present formal definitions, properties and applications of conics in the everyday life. It is expected that a person that is not a specialist in mathematics, are able to read and understand all the mathematics in the surroundings of the applications of these conics.