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1	The light curves of W Ursae Majoris systems Rudnick, Ian Stuart, January 1972 (has links) Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Bibliography: leaves 156-160. Double stars. Ursa Major.
2	Visualidades e peripécias transgressoras do folguedo La Ursa em João Pessoa- PB ARANHA, Camilo de Figueiredo 12 March 2014 (has links) Submitted by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-04-13T14:16:36Z No. of bitstreams: 2 DISSERTAÇÃO Camilo de Figueiredo.pdf: 5112288 bytes, checksum: ce192a9cca90f75a29a7732974c0deec (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-04-13T14:16:36Z (GMT). No. of bitstreams: 2 DISSERTAÇÃO Camilo de Figueiredo.pdf: 5112288 bytes, checksum: ce192a9cca90f75a29a7732974c0deec (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2014-03-12 / Visualidades e peripécias transgressoras do folguedo La Ursa em João Pessoa é uma pesquisa que analisa os processos que envolvem a construção de conhecimentos desse rito de natureza dramática da cultura popular, que acontece às vésperas dos festejos carnavalescos em alguns estados da Região Nordeste do Brasil e durante eles. A principal característica dessa folgança é a figura de um ”Urso” com uma cuia na mão e segurado por uma corda pelo domador que, acompanhado por uma batucada, apresenta um bailado nas ruas e em outros locais públicos, interpelando transeuntes que encontra pelo caminho a fim de se divertir e conseguir alguns “trocados”. A investigação analisa como e quais tipos de educação atuam na produção do ensino e da aprendizagem de crianças, adolescentes e adultos dos grupos “Macaco louco do Rangel” e “Urso amigo batucada”, durante a elaboração das visualidades e das performances realizadas nessa brincadeira vivenciada no Bairro do Rangel. Assim, por meio de uma abordagem qualitativa do tipo etnográfica, os dados foram coletados usando-se instrumentos como entrevistas, registros fotográficos e observações diretas sobre a preparação e a atuação desses grupos. A pesquisa se fundamenta em referenciais teóricos baseados nos princípios da Cultura Visual e da Antropologia do Cotidiano, pautadas em reflexões sobre o carnaval brasileiro. Seu resultado evidencia, a partir da análise dos grupos investigados, a existência de dois tipos de educação: uma informal e outra não formal. Ambas envolvem a construção de visualidades compostas por elementos estéticos, sonoros e performáticos. O primeiro tipo de educação atua de forma espontânea, por meio do improviso, apenas para fins de entretenimento, enquanto a outra é vivenciada profissionalmente e atende a diversos fins, como: diversão, competição e ação social. No entanto, ambas atuam como formas de resistência da cultura popular, promovendo a difusão e a renovação de valores dessa manifestação artística e suas estratégias de sobrevivência, experiências construídas na prática cotidiana e no ato de interagir e de brincar de “La Ursa”. Entendemos que essas formas de manifestação artística têm uma importância fundamental na construção de conhecimento para promover e valorizar o folguedo “La Ursa” e que as bases teóricas da Educação pela Cultura Visual tem importante papel social nesse processo, uma vez que atuam como uma ferramenta fundamental para uma compreensão crítica desses posicionamentos, que ajuda a entender e valorizar as visualidades imagéticas desse folguedo produzidas no campo da arte e da cultura. La Ursa Cultura Visual Educação Visualidades
3	Observations and models of venting at deepwater Gulf of Mexico vents Smith, Andrew James 09 November 2012 (has links) Natural vents in the Gulf of Mexico are actively expelling water and hydrocarbons. They are ubiquitous along continental margins, and I characterize a single vent in the Ursa Basin at leaseblocks MC852/853. Seismic data reveal that the vent is elevated ~75 meters above the seafloor and is roughly circular with a ~1.2 km diameter. A transparent zone centered underneath the vent extends to ~1500 meters below seafloor; this zone is commonly interpreted to record the presence of gas. There is a strong negative polarity seismic reflection that rises rapidly at the vent’s boundaries and is horizontal within a few meters of the seafloor beneath the vent edifice. I interpret that this reflection records a negative impedance contrast, marking the boundary between hydrate and water above and free gas and water below: it is the bottom-simulating reflector. Salinities beneath the vent increase from seawater concentrations to >4x seawater salinity one meter below seafloor. Temperature gradients within the vent are ~15x the background geothermal gradient. I model the coexistence of high salinity fluids, elevated temperature gradients, and an uplifted bottom-simulating reflector with two approaches. First, I assume that high salinity fluids are generated by dissolution of salt bodies at depth and that these hot, saline fluids are expelled vertically. Second, I model the solidification of gas hydrate during upward flow of gas and water. In this model, free gas combines with water to form hydrate: salt is excluded and heat is released, resulting in the generation of a warm, saline brine. The two models result in predictable differences of salinity and temperature. A better understanding of the hydrogeological processes at vent zones is important for quantifying the fluxes of heat and mass from submarine vents and is important for understanding the conditions under which deep-sea biological vent communities exist. / text Natural vents Gulf of Mexico Ursa Basin Vent zones Deepwater Vents Northern Gulf of Mexico Gas Hydrates
4	The origin and properties of mass transport deposits, Ursa Basin, Gulf of Mexico Strong, Hilary Elizabeth 07 September 2010 (has links) Uniaxial consolidation experiments on Mass Transport Deposit (MTD) and non-MTD core samples from Ursa Basin, Gulf of Mexico, show MTDs have a lower porosity at a given effective stress compared to adjacent non-MTD sediments; a behavior observed in additional experiments on lab remolded Ursa core and resedimented Boston Blue Clay (BBC). I hypothesize debris flow action remolded the sediment: removing its stress history through shearing action, resulting in dense sediments at shallow depth. I supplement testing this hypothesis through lab remolding of BBC (in addition to Ursa clay) due to the greater availability and knowledge of this material. Ursa MTDs record multiple submarine slope failure events within the upper 200 meters below sea floor (mbsf); the most prominent is labeled MTD-2. MTDs have lower porosity and higher bulk density than surrounding, non-MTD, sediment. Porosity ([phi]) is 52% at 125mbsf – immediately below MTD-2; whereas [phi] is 46% at 115mbsf – within MTD-2. Comparison of non-MTD samples to MTD-2 samples, and intact to remolded samples, shows a decrease in sediment compressibility (Cc) within the MTD-2 and remolded sediments. Permeability within Ursa mudstones also declines with porosity according to: log (k) = A[phi] - B. Permeability is slightly higher within MTD-2; however grain size analysis indicates lower clay content in MTD-2 versus the non-MTDs. Pre-consolidation stress interpretations from the experiments show a linear trend in both MTD and non-MTD sediments, indicating both geologic units depict the same pore pressure profile. Remolding via debris flow explains the origin of MTDs at Ursa and governs the evolution of this geologic unit to its dense, highly consolidated, state today. At some point, slope failure triggered movement of the sediment down slope in form of a debris flow. The shearing action of the debris flow weakened the sediment, reducing its ability to support the overburden. As consolidation resumed, the remolded sediment followed a new, less steep, Cc curve. Within the geologic record, a distinctive dense, shallow unit is preserved; evidence for historical slope failure. / text Mass transport deposit Sedimentation and deposition Porosity Permeability Slope failure Ursa Basin, Gulf of Mexico Mass Transport Deposit Uniaxial Consolidation Remolding Boston Blue Clay
5	Failure mechanics, transport behavior, and morphology of submarine landslides Sawyer, Derek Edward 20 November 2012 (has links) Submarine landslides retrogressively fail from intact material at the headwall and then become fluidized by strain weakening; the final deposits of these flows have low porosity, which controls their character in seismic reflection data. Submarine landslides occur on the open slope and also localized areas including margins of turbidite channel-levee systems. I develop and quantify this model with 3-D seismic reflection data, core and log data from Integrated Ocean Drilling Program Expedition 308 (Ursa Basin, Gulf of Mexico), flume experiments, and numerical modeling. At Ursa, multiple submarine slides over the last 60 ky are preserved as mass transport deposits (MTDs). Retrogression proceeded from an initial slope failure that created an excavated headwall, which reduced the horizontal stress behind the headwall and resulted in normal faults. Fault blocks progressively weakened until the gravitational driving stress imposed by the bed slope exceeded soil strength, which allowed the soil to flow for more than 10 km away from the source area. The resulting MTDs have lower porosity (higher bulk density) relative to non-failed sediments, which ultimately produces high amplitude reflections at the base and top of MTDs. In the laboratory, I made weak (low yield strength) and strong flows (high yield strength) from mixtures of clay, silt, and water. Weak flows generate turbidity currents while moving rapidly away from the source area. They create thin and long deposits with sinuous flow features, and leave behind a relatively smooth and featureless source area. In contrast, strong flows move slowly, do not generate a turbidity current, and create blocky, highly fractured source areas and short, thick depositional lobes. In Pleistocene turbidite channels of the Mississippi Fan, deep-seated rotational failures occurred in the flanking levees. The rotational failures displaced material into the channel from below where it became eroded by turbidity flows. This system achieved a delicate steady state where levee deposition and displacement along the fault into the channel was balanced by erosion rate of turbidity flows. This work enhances our understanding of geohazards and margin evolution by illuminating coupled processes of sedimentation, fluid flow, and deformation on passive continental margins. / text Submarine landslides Marine geology Geotechnical Hazards Pore pressure Failure mechanics Transport behavior Morphology Turbidity Mass transport deposits Ursa Basin Gulf of Mexico
6	The Pleiadic Age of Stuart Poesie: Restoration Uranography, Dryden's Judicial Astrology, and the Fate of Anne Killigrew Brown, Morgan Alexander 30 April 2010 (has links) The following Thesis is a survey of seventeenth-century uranography, with specific focus on the use of the Pleiades and Charles's Wain by English poets and pageant writers as astrological ciphers for the Stuart dynasty (1603-1649; 1660-1688). I then use that survey to address the problem of irony in John Dryden's 1685 Pindaric elegy, "To the Pious Memory of Mrs. Anne Killigrew," since the longstanding notion of what the Pleiades signify in Dryden's ode is problematic from an astronomical and astrological perspective. In his elegiac ode, Dryden translates a young female artist to the Pleiades to actuate her apotheosis, not for the sake of mere fulsome hypberbole, but in such a way that Anne (b. 1660-d. 1685) signifies for the reign of Charles II (1660-1685) in her Pleiadic catasterism. The political underpinnings of Killigrew's apotheosis reduce the probability that Dryden's hyperbole reserves pejorative ironic potential. Hevelius Restoration prodigies Restoration prodigy birth star Pleiads Pleiades Tycho Brahe Restoration Anne Killigrew Ursa Major Charles's Wain judicial astrology Dryden Charls his wain William Bradford Gardner Edward Matthew irony Arcturus Laura Brown Howard Weinbrot Pindar uranography William Lilly Charles I Charles II uranology septentrional Polaris Ben Jonson Virgil Taygete Electra Astronomica Hyginus Fasti Ovid coronation James I vernal equinox septem triones seven stars 1660 star waine Ursa Minor Flamsteed Halley David Vieth English Language and Literature

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