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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 56 for “"fifth order"”.
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Contributions to Trigonometric Sums and Fifth -Order Mock Theta Functions
… we extend the work of G. N. Watson on the fifth order mock theta functions, and show that in comparison to the third order functions, the fifth order mock theta functions possess a more complex behavior on radial approach to rational points on the unit circle. We prove a special case of a …
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Large Eddy Simulation of Supersonic Twin-Jet Impingement Using a Fifth-Order WENO Scheme
… The convective terms are discretized using a fifth-order WENO scheme, whereas the viscous terms are discretized using a fourth-order central-differencing scheme. A low-storage five-stage fourth-order Runge-Kutta scheme is used to advance the solution in time. Code verification is achieved by …
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Correlation and Causes of Fifth Order Cycles Within the Upper Cretaceous Eagle Formation, Bighorn Basin of Wyoming
… sections were used to test the hypothesis that fifth-order cycles are of eustatic origin. Spectral analysis of limited grain size data clearly indicated a strong 41,000-year Milankovitch cycle (the obliquity cycle) along with a well-defined 20,000-year Milankovitch cycle (the precession cycle). …
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Eigenvalue comparison theorems for certain boundary value problems and positive solutions for a fifth order singular boundary value problem.
… certain two point boundary value problems for a fifth order linear differential equation are first obtained. The results are extended to (2n+1)-order and (3n+2)-order boundary value problems. Methods used for these results involve the theory of $u_0$-positive operators with respect to a cone in …
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Correlation of a Hierarchy of Orbitally Forced Allocycles in the Lower Silurian McKenzie Limestone Member of the Mifflintown Formation, Pennsylvania and Maryland
… McKenzie Limestone is divisible into two fourth-order (400 ky duration) sequences, which in tum may be divided into four fifth-order (100 ky duration) cycles. The predominant cyclic pattern, averaging 8.2 feet in thickness, is a highly asymmetric (shallowing-upward), 100 ky, fifth-order cycle. …
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Statistical Analysis of High-Order Moments from Direct Numerical Simulation of a Turbulent Boundary Layer
High-order zero-pressure-gradient turbulent boundary layer statistics are important for turbulence modeling efforts and insight into the nature of turbulent flow. In this thesis, a complete database of third-, fourth-, and fifth-order central velocity moments is presented. The statistics were …
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Sedimentological lithofacies, internal architecture and evolution of deep marine fans of the Tithonian Angel Formation, Northwestern Dampier Sub-basin, North West Shelf, Australia.
… of an architectural scheme comprising seven orders in combination with wireline, biostratigraphic and seismic reflection data and applicable analogues. Eleven cores totalling 547 metres were analysed to identify sedimentological processes responsible for the deposition of the Angel Formation …
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Carrier excitations and nonlinear optical effects in semiconductor quantum wells
… a rotating wave approximation and solved by the fifth-order Runge-Kutta method.
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Toward Stabilization of the Quantum Pair-Cat State on Superconducting Circuits Platform
… circuit parameters that engineer a dominant fifth-order flux nonlinearity, yielding the effective Hamiltonian required for pair-cat state generation. We further present implementations of logical X rotations, show casing the possibility of rotating around the Bloch sphere and encoding quantum …
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Analysis of Small-Scale Cyclicity in the Williamsport Sandstone Member and the Lower Wills Creek Formation in Pennsylvania and Maryland
… cycle of the Earth's orbit. These sixth-order cycles are distinguished by disjunct facies changes at non-depositional surfaces produced by rapid sea-level rises; cycles typically contain sandstone and/or carbonate at the base, and shale at the top. Sixth-order cycles are bundled by the …
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A hybrid model for large scale simulation of unsteady nonlinear waves
… thesis. It is formed by combining the derived fifth order Enhanced Nonlinear Schrödinger Equation based on Fourier transform (ENLSE-5F), the fully nonlinear Enhanced Spectral Boundary Integral (ESBI) method and its simplified version. The numerical techniques and algorithm for coupling three …
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Variations in the architecture of fluvial deposits within a marginal marine setting, Eocene Sobrarbe and Escanilla formations, Spain
… 2), fourth- (Chapters 2, 3, 4, and 5), and fifth-order cyclicity (Chapters 4 and 5). This dissertation advances our scientific knowledge about the deposition of fluvial systems in high-accommodation, high-sediment supply settings. The continuity between the axis and margin of the basin and …
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A Comparison of Methods for Generating Bivariate Non-normally Distributed Random Variables
… They are the Fleishman Power Method, the Fifth-Order Polynomial Transformation Method, and the Generalized Lambda Distribution Method. Simulations were run in order to compare the three methods by how well they generate bivariate distributions with the desired means, variances, skewness, …
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High-Order and Wavelet-Adaptive Immersed Methods for PDEs on Complex Domain Geometries
… renders necessitates the design of novel high-order and efficient solvers based on immersed methods. This thesis examines two pivotal aspects of these methods: firstly, the acceleration of computational processes via adaptive resolution strategies; and secondly, the enhancement of accuracy …
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Positive Solutions, Existence Of Smallest Eigenvalues, And Comparison Of Smallest Eigenvalues Of A Fourth Order Three Point Boundary Value Problem
… same theorems, we will extend the problem to the fifth order via the Green's Function and again via Substitution. Applying the comparison theorems and the properties of $u_0$-positive operators to determine the existence of smallest eigenvalues. The existence of these smallest eigenvalues is then …
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Advances in the Theory of Persistent Neutron Chains
… This work extends the fission multiplicity up to fifth order, demonstrates that that upper limit is sufficient to provide confident estimates of initiation probabilities, extends Bell theory to allow for multiple neutron release in a single source event, provides estimates of the errors in current …
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Error analysis of higher order time-domain finite element methods for the one-dimensional Maxwell's equations
… element method has been extended for higher order temporal accuracy using several schemes. While common in computational fluid dynamics, less research has been conducted with these methods for computational electromagnetics. A stabilized finite element method utilizing the Streamline/Upwind …
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Stratigraphy, Sedimentology and Early Diagenesis of Pennsylvanian-Permian Mixed Carbonate-Siliciclastic Cyclothems, SW Ellesmere Island, Nunavut
… biostratigraphy. Superimposed on this trend are fifth-order sequences, or cyclothems, likely resulting from glacio-eustatic fluctuations. The recognition of distal and proximal cyclothems provided the basis to decipher the paleogeographic history of the area. The upper part of proximal cyclothems …
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Large eddy simulations of bluff-body wakes on parallel computers
… interpolation schemes, including a third-order (QUICK), a fifth-order, and a seventh-order upwinding-biased scheme, have been employed for convection terms. A data-parallel algorithm has been developed on the CM-5 machine, and its performance has been evaluated on various grid sizes in …
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