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 25 for “"Eclipses"”.
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Kairotic Eclipses in Vaccine Legislation: How Overlapping Spheres of Discourse Create Ideal Public Policy Climates
As the United States confronts its fourth measles outbreak of 2015, public health officials must quickly address declining vaccination rates. This thesis explores public sentiment about vaccination as it relates to public policy communication and private health practices though a rhetorical history …
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CONTESTED KNOWLEDGES: A RHETORICAL ANALYSIS OF 'ECLIPSES FOR AUSTIN' BY PABLO VARGAS LUGO AT THE INTERSECTION OF ART AND SCIENCE
… into being. Through a rhetorical analysis of 'Eclipses for Austin' (2009) by Mexican artist Pablo Vargas Lugo, this thesis aims to identify and describe the way contemporary artistic practices operate to expand on knowledge produced from scientific inquiry and enunciation. The analysis, …
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The behavior of O - C curves for contact binaries in the Kepler catalog
In this thesis, we study the timing of eclipses for contact binary systems in the Kepler catalog. Observed eclipse times were determined from Kepler long-cadence light curves and "observed minus calculated" (0 - C) curves were generated for both primary and secondary eclipses of the contact binary …
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Analysis of Moving Events Using Tweets
… events such as hurricanes, floods, and solar eclipses. Such naturally occurring events are distributed across space and time. It would be beneficial to researchers if we can perform a spatial-temporal analysis to test some hypotheses, and to find any trends that tweets would reveal for such …
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First autonomous telescope at Wallace Observatory : impact and preliminary results
… magnitude changes for the primary and secondary eclipses were found to be 0.72 ± 0.036 and 0.62 ± 0.031 R magnitudes respectively. The telescope, SAURON, is currently able to locate targets and collect data robotically with an observer monitoring from afar.
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Balloon Borne GPS-Enabled Radiosondes That Enable Simultaneous Multi-Point Atmospheric Sensing With a Single Ground Station
… events such as thunderstorms and solar eclipses. This work presents system design details, as well as performance results from a variety of launches.</p>
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Orbital transfer trajectory optimization
… of oblateness, multiple attracting bodies, eclipses, and solar cell degradation. The current work adds to this by developing control laws for optimal coasting and for variable specific impulse at constant power. The Hamiltonian method is used to develop the optimal control laws and physical …
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Observations, Thermochemical Calculations, and Modeling of Exoplanetary Atmospheres
… with high signal-to-noise ratios, as their deep eclipses allow us to detect signatures of spectral features and assess planetary atmospheric structure and composition with greater certainty. Chapter 1 gives a short introduction. Chapter 2 presents the Spitzer secondary-eclipse analysis and …
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Competition, Cost Analytics, and Offsetting Strategies: Pressures and Opportunities on the Fraud Triangle
… fraud risk. I argue that industry competition eclipses many firm-level determinants in their association with fraud risk, and that the cost of poor information elevates fraud risk as competition increases. I find that fraud risk is higher for firms in industries with 1) more substitutable …
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Analysis of the Effect of the August 2017 Eclipse on the Ionosphere Using a Ray-trace Algorithm
… Unique responses may be witnessed during eclipses, including changes in radio frequency (RF) propagation at high frequency (HF). Such changes in RF propagation were observed by the Super Dual Auroral Radar Network (SuperDARN) radars in Christmas Valley, Oregon and in Fort Hays, Kansas …
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Eclipsing Cataclysmic Variables With TESS
… individually. Depending on orbital period, eclipses per data set range from ~70 to ~200, with most CVs having multiple data sets at both 2-minute and 20-second cadence; containing ~15,000 and ~90,000 data points, respectively. The current number of datasets in-hand is 155 at the 2-minute …
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Ambivalent Images, Beloved Objects: Building Bridges between Picture Books and the Tangible World
… objects that our digital-driven culture eclipses. It strives towards a unifying pedagogical and aesthetic philosophy that accomplishes what illustrator Eric Carle characterizes as a bridge between the tactile world of objects and the world represented in illustrations.</p> <p>This …
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Rapid oscillations in cataclysmic variables
… which show rapid oscillations as well as primary eclipses. Photometry of z Cha, archived at the University of Cape Town over a period of ten years, is searched for rapid oscillations. Two runs show oscillations, with periods of 24 and 28 seconds. They exhibit eclipse-related phase changes which …
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K-Star rapid rotators and the detection of relatively young multiple K-Star systems
… spots as opposed to planetary transits, binary eclipses, or stellar pulsations. In total, 293 of the Kepler K-star targets exhibited rotational periods, Prot, of 2 days or less. Of these 293 targets, 17 systems show two or more independent short periods within the same photometric aperture. …
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Empirical Accuracy and Consistency in College Students' Knowledge of Classical Astronomy
… seasons, lunar phases, and solar and lunar eclipses) and were re-tested in an interview. The participants gave confidence ratings for their explanations, and tried to apply their explanations to several hypothetical scenarios. The participants also completed a general spatial ability test …
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Automatic detection of periodic sources in the K2 data sets
… fact that typical planetary transits and binary eclipses have numerous harmonics in their Fourier spectra. In this method we sum the harmonics of the fundamental frequency, which increases the signal-to-noise ratio and substantially increases the detection efficiency of the algorithm. This latter …
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Stereochemistry of small molecules: Configurational and conformational control
… we found that the 2,6-disubstituted aryl group eclipses its geminal hydrogen, and induces an antiperiplanar relationship of the geminal and vicinal hydrogens. Interestingly, anti-nitrile aldols or syn-ketone aldols bearing 2,6-disubstituted aryl groups demonstrate unanticipated remote effects on …
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Characterizing Exoplanet Atmospheres: From Light-curve Observations to Radiative-Transfer Modeling
… 2 and 3 describe the Photometry for Orbits, Eclipses and Transits (POET) pipeline to model Spitzer Space Telescope light curves. I analyzed secondary-eclipse observations of the Jupiter-sized planets WASP-8b and TrES-1, determining their day-side thermal emission in the infrared spectrum. The …
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Photometric variability of X-ray sources in the galactic bulge
… to identify high inclination systems through eclipses, to determine what periodicity, if any, is present in the optical light, and use these properties to partially or fully classify X-ray sources. The GBS contains a variety of X-ray sources, including Low Mass X-ray Binaries, Cataclysmic …
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Male Subjectivity and Twenty-First Century German Cinema: Gender, National Idenity, and the Problem of Normalization
… domination. At the same time, however, the film eclipses the problematic dominance of German hegemonic masculinity and falls back on stereotypical depictions of a violent, Muslim Other. Finally, in Chapter 5, I explore current counter-filmmaking and the ways in which it can revive questions of …
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