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 80 for “"slant"”.
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The analysis of slant-from-texture in early vision
… the underlying processes used in interpreting slant-from-texture. The first two experiments show that measures of subjective perception predict speeded performance in a visual search task, and that the mediating representation relies on an assumption of projective size (i.e., discriminating the …
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Study of slant path attenuation ratios derived from a dual-polarized radar
… radar to estimate drop size distributions on a slant path between Blacksburg, Virginia, and the Intelsat VA F10 satellite. The effect of varying drop size distributions on attenuation ratios is discussed. An uplink power control simulation is developed using the attenuation ratios. Attenuation …
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The Scintillation Index In Moderate To Strong Turbulence For The Gaussian Beam Wave Along A Slant Path
… scintillation of a Gaussian beam along an uplink slant path valid in all regimes of turbulence is presented, as well as results for the limiting cases of a plane wave and a spherical wave.
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Multicomponent seismic data analysis in the tau-p domain
I develop a number of new methods for performing slant stacking and its variants suitable to the processing of ocean bottom seismograph (OBS) data. I develop two versions of the discrete Radon transform (DRT) pair, a generalization of slant stacking, which can handle data unevenly spaced in both …
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Experimental and numerical investigation of the flow structures at the rear of three-dimensional bluff bodies
… In the first method, a modified SAB with a 25° slant angle is proposed that uses elliptical curvature at the rear end and is denoted as the elliptical Ahmed body (EAB). The particle image velocimetry (PIV) technique is used to provide the detailed flow structure. The PIV study is conducted at a …
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Representative Biodiversity: The Ecosystem of Cartoon Network
… program, as explained by Todd Gitlin, uses its slant to sell itself to advertisers with similar leanings on contemporary social issues to maintain its flow of revenue. However, this concept of slant does not account for the broader network, which, like the singular program, cultivates a catalog …
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The Venetian blind effect: Contrast disparity modulation in irradiation stereoscopy
… disparity thresholds for the perception of slant in the venetian blind effect for a square-wave carrier spatial frequency of 3.14 c/deg and square-wave modulation spatial frequencies of 0.26, 0.39, 0.79, and 1.57 c/deg.</p><p>In Experiment 2 we increased the spatial frequencies. We measured …
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Life history of the endangered fine-rayed pigtoe pearly mussel, Fusconaia cuneolus (Lea, 1840), in the Clinch River, Virginia
… and examined from the Clinch River at Slant for glochidial attachment. Prevalence of infestation of amblemine glochidia was highest on species of the Cyprinidae (27 to 46%), and six species were identified as possible fish hosts for the glochidia of the fine-rayed pigtoe. Amblemine …
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Population demographics of six freshwater mussel species (Bivalvia: Unionidae) in the upper Clinch river, Virginia and Tennessee
… an absence of recruited juveniles at the Slant site (RK 359.3) after 1977 to 1979 for four mussel species examined. Substantial erosion of stream banks in tributaries of the Clinch River and deposition of sediment in the Clinch River were observed at Slant, indicating a potential cause of …
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The Fundamental Resonant Frequency and Radiation Characteristics of Wide Angle Conical Antennas
… of the fundamental resonant frequency on both slant height and half cone angle. Theoretical analysis of this type of antenna is typically based on the mode theory of antennas (as derived by S.A. Schelkunoff) in which the structure is treated as a conical transmission line. The theory is quite …
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Analysis of the Effect of the August 2017 Eclipse on the Ionosphere Using a Ray-trace Algorithm
… westward looking radar observed an increase in slant range of the backscattered signal during the eclipse onset followed by a decrease after totality. In order to investigate the underlying processes governing the ionospheric response to the eclipse, we employ the HF propagation toolbox …
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Observation of sulphate aerosols and SO2 from volcanic eruptions using data from the Atmospheric Chemistry Experiment (ACE)
… The size distribution parameters, aerosol volume slant column and composition of the sulphate aerosol were obtained using a least-squares algorithm, employing a continuum spectrum between 800 − 4200 cm−1 . The maximum volume slant column of the aerosol was found to be 500 μm3 cm−3 km (for …
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Revisiting the queer : theory, literature and gay male studies
… Christian text with a South African slant: The Pink Agenda: Sexool revolution in South Africa (McCafferty and Hammond 2001). Forms of opposing this homophobic view were needed for the gay community. This required an investigation into the academic debates aoout homosexuality: mainly …
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Modelling of Rainfall Drop Size Distributions for Application in Fade Prediction on Earth-Space Paths
… experienced by signals.<br/><br/>Effective rainy slant path length is defined as the ratio of the total instantaneous slant path rain attenuation and the specific attenuation. Assuming a latitude-dependent fixed rain height, the variability of instantaneous effective rainy slant path length with …
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Framing Income Inequality in the Media: Is There a Liberal or Neoliberal Bias?
… neutral frames are identified and examined for slant and bias. I find that while the Times has a slight liberal bias in framing income inequality, a neoliberal hegemonic discourse pervades how the issue is addressed. Finally, I address the significance of social mobility as an absent frame in …
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Rain attenuation and depolarization along 10 to 30 GHz earth space links predicted from s-band dual-polarized radar measurements
… to infer rain drop size distribution along the slant path from radar measured reflectivity and differential reflectivity data collected along the path. Then, two semi-empirical models are developed which predict attenuation from radar measured reflectivity and differential reflectivity. These …
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High Resolution ISAR Imaging using a low-cost ultrasonic radar
… generated with a resolution of 4 cm in both the slant-range and cross-range when the rotation angle was 10◦ . However, increasing the rotation angle resulted in target scatterers experiencing migration through resolution cells (MTRC), which led to a blurred ISAR image. A rotational motion …
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A Comparison of Nonlinear Filters for Orbit Determination and Estimation (Satellite)
… used to update the state vector estimates are slant range, azimuth, and elevation relative to a radar site.
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