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 693 for “"Discontinuity"”.
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Modeling Roughness of Rock Discontinuity Surfaces
… a new methodology of quantifying the rock discontinuity condition of roughness through the physically based modeling approach of signal analysis. The development of this method came about after investigation into the use of qualitative categorizations of roughness from the RMR rating system …
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The co-requisite model : a regression discontinuity
… how different subgroups perform. Regression discontinuity showed the impact of the placement test cutoff score on success for students within five points of that cutoff score. After five semesters of implementation of the co-requisite model, pass rates within the gateway mathematics course …
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The numerical solution of waveguide discontinuity problems
… range of transverse and longitudinal waveguide discontinuity problems is described. Results are obtained by the simultaneous solution of matrix equations, generated by Fourier analysis, which relate the complex amplitudes of orthogonal electric and magnetic field components. In some cases the …
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Deep learning approach to discontinuity-preserving image registration
Image registration is an indispensable tool in medical image analysis. Traditionally, registration algorithms are aimed at aligning image pairs using regularizers to impose smoothness restrictions on unknown deformation fields. The majority of these methods assume global smoothness in the image …
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Simultaneous Diversity: Discontinuity, Entanglement, and Contemporary American Fiction
… conceptual level, "Simultaneous Diversity: Discontinuity, Entanglement, and contemporary American Fiction" investigates how the rhetoric of discontinuity entangles contemporary evolutionary theory, social theory, science studies, and literary fiction. The dissertation's main focus is a …
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Immigrant Risk, Self-Discontinuity, and the Role of Nostalgia
… tested. The study focuses on immigrant self-discontinuity, a migration- induced disruption in one’s sense of self-sameness and unconscious sense of going-on-being, manifesting in moments of disorientation, disorganization, or dissociative-like experiences. There is no adequate instrument to …
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A Method of Moments Solution of Stripline Discontinuity Problems
… scattering parameters of an arbitrarily shaped discontinuity in a stripline are found by solving an integral equation by the method of moments. In the solution of this problem, the series acceleration technique is used to sum the periodic Green's function, and the modal fields of the infinite …
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Continuity/discontinuity Between Home and School Patterns of Communication
… toward dialect affect the students' continuity/discontinuity of communication between home and school?) is presented, and seven subsidiary questions.
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The Generalized Scattering Matrix Analysis of Waveguide Discontinuity Problems
Made available in DSpace on 2014-12-08T22:23:36Z (GMT). No. of bitstreams: 1 6500876.pdf: 2680840 bytes, checksum: 22118d5572169127019bee03e34e0c05 (MD5) Previous issue date: 1964
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Extrapolation and bandwidth choice in the regression discontinuity design
… to the literature on the regression discontinuity (RD) design. The first two chapters develop approaches to the extrapolation of treatment effects away from the cutoff in RD and use them to study the achievement effects of attending selective public schools, known as exam schools, in …
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Effects of Misassignment on Bias in the Fuzzy Regression Discontinuity
… of the program effect is the regression discontinuity (RD). However, a major problem encountered when using RD is that participants must be assigned to groups strictly based on a cutoff score - a situation which is likely to be problematic in applied settings. To date, the literature has …
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The X-discontinuity: Seismic signatures of a heterogeneous upper mantle
… in the upper mantle have been termed the X-discontinuity (X; 230-350 km depth) and allude to the widespread presence of chemical heterogeneity, but the exact cause of the X is yet to be determined. Receiver function (RF) techniques using P-to-S converted waves are capitalised upon to study …
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New efficient contact discontinuity capturing techniques in supersonic flow simulations
… a kinetic fluctuation splitting scheme and a discontinuity confinement scheme based on an antidiffusion approach. In both approaches cell-vertex fluctuation-splitting methods are used in order to generate a multi-dimensional procedure. The kinetic fluctuation-splitting scheme presented here is …
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Spectral discontinuity in concatenative speech synthesis – perception, join costs and feature transformations
… to represent human perception of spectral discontinuity in concatenative speech synthesis. Such measures are used as join costs to quantify the compatibility of speech units for concatenation in unit selection synthesis. No previous study has reported a spectral measure that satisfactorily …
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Origin and stratigraphic significance of limestone discontinuity surfaces, Ordovician (Whiterockian) of Nevada
Results indicate that discontinuity surfaces enhance correlations between sections only after a well-established biostratigraphic zonation is in place. Chronostratigraphically significant discontinuities parallel biozone boundaries or occur in roughly equivalent abundances within zones. Diachronous …
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Development of a polynomial nodal method with flux and current discontinuity factors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1992.
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Urban square as theater : issues of continuity and discontinuity in urban design
… goes to the dialect between" continuity" and" discontinuity." The argument is that discontinuity is necessary for creating abundant images of a city. It links all the elements on the urban level, and interestingly makes the whole urban environment continuous. The concept of "theater" is …
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Approximate solutions to the wave equation for a medium with one discontinuity
This thesis deals with a particle limit for the n dimensional wave equation and shows that there are asymptotic solutions for certain pulses in the high-frequency limit. These pulses are shown to propagate along rays predicted by geometrical optics. The solutions are computed up to an error which …
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A New Tool for Rock Mass Discontinuity Mapping from Digital Images: VTtrace
… the VTtrace is effective in extracting rock discontinuity traces. Additional enhancements to the program are proposed to allow feature attributes from the three-dimensional surface to be determined.
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Leakage-corrected discontinuity factors for a second-generation Th-Pu pressure-tube SCWR.
… at node boundaries through the use of discontinuity factors. Node-averaged cross sections and discontinuity factors can be obtained from single-node calculations using reflective boundary conditions. To further improve accuracy, non-reflective boundary conditions that approximate the …
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