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.
Results
Showing 1 to 20 of 33 for “"tensorial"”.
-
Tensorial Impedance Surfaces for Manipulating Microwaves
… are often described with a "surface impedance". Tensorial impedance metasurfaces are surfaces where, due to anisotropy, the impedance becomes a 2nd rank tensor. This results in a boundary condition that has greater control over the surface fields than scalar impedance boundaries. Most …
-
Tensorial spacetime geometries and background-independent quantum field theory
… thesis, conditions are identified that a general tensorial geometry must fulfill to serve as a viable spacetime structure. Kinematics of massless and massive point particles on such geometries are introduced and the physical implications are investigated. Additionally, field equations for massive …
-
Tensorial spacetime geometries carrying predictive, interpretable and quantizable matter dynamics
… of this characterization of admissible tensorial spacetime geometries on specific matter is not a weakness, but rather presents an insight: it was Maxwell theory that justified Einstein to promote Lorentzian manifolds to the status of a spacetime geometry. Any matter that does not mimick …
-
Tensorial elastodynamics and acoustodynamics for generalized seismic migration and inversion applications
… in real-world applications. I propose a novel tensorial strategy for generalized modeling and least-squares reverse time migration (E-LSRTM) of elastic multi-component seismic data in arbitrarily heterogeneous and anisotropic media for generalized geometries (e.g., conformal to complex …
-
Tensorial elastodynamics and acoustodynamics for generalized seismic migration and inversion applications
… in real-world applications. I propose a novel tensorial strategy for generalized modeling and least-squares reverse time migration (E-LSRTM) of elastic multi-component seismic data in arbitrarily heterogeneous and anisotropic media for generalized geometries (e.g., conformal to complex …
-
Non-Equilibrium Thermodynamics of porous media filled by a fluid flow and of rigid bodies with an internal tensorial field influencing the thermal phenomena.
… media and of rigid bodies with an internal tensorial field influencing the thermal phenomena, respectively. Furthermore, three Appendices are present, that clarify some aspects of the arguments presented in the second, third, fourth, and seventh Chapters. Regarding the first Part, the …
-
Stress effects on atomistic kinetic transitions
In this thesis, I studied how the full tensorial stress state applied to a kinetic transition impacts the activation enthalpy. To this end, the activation energy, scalar activation volume, and tensorial activation volume were studied for several kinetic transition types. This computational study …
-
Simulating the Motion of Droplets on High-Slip Patterned Surfaces
… We further modify the theory to introduce tensorial descriptions of slip and contact line friction, and determine the validity of the tensorial approach with reference to droplet motion data. Finally, we drive droplets across dry and liquid-infused pillared surfaces to examine the influence …
-
Scientific visualization of stress tensor information with applications to stress determination by X-ray and neutron diffraction
… visualization is not only applied to the final tensorial quantity obtained from the diffraction measurements, but the visual methods are developed from, and integrated into current residual stress analysis practices by relating the newly developed visual techniques to the conventional …
-
Towards optimal mixed finite elements for general shell structures
… family of quadrilateral MITC (Mixed-Interpolated Tensorial Components) shell elements proposed by Bathe, Dvorkin and Bucalem. The study demonstrates the superior performance of these elements. We also develop a new simple and effective triangular mixed-interpolated shell element and demonstrate …
-
Finite element analysis of shells with layers
… approach to the MITC (Mixed Interpolation of Tensorial Components) family of shell elements, a widely-used mixed formulation. We focus in particular on the performance of these elements when employed to analyze problems featuring layers, and specifically we assess the effect of mesh refinement …
-
Coupled mechanochemical theories for reacting systems with application to nanovoid nucleation and Li-ion batteries
… that stress relaxation is due to anisotropic (tensorial) compositional straining that occurs during insertion-extraction at any deviatoric stresses. Developed theory describes known experimental and atomistic simulation data. The stress evolution is modeled for different nanostructures (thin …
-
Smart Data Analytics for Manufacturing Processes
… to consider both secondorder and third-order tensorial data combined as possible inputs to the predictive modeling. It is shown that the utilization of the proposed methods is capable of significantly improving the prediction performance if the dataset is analyzed correctly beforehand. …
-
A continuum model for needlepunched nonwoven fabrics
… orientation distributions using a single tensorial representation of the network anisotropy (fabric ellipsoid). An orthotropic elastic constitutive model for the elastic response of nonwoven fabrics is then formulated based on this structural measure and deformation mechanisms of the …
-
Continuum modeling of particle suspension conductivity
… first chapter, we derive a model for the full, tensorial effective conductivity of a particle particle network as a function of a local tensor description of the particle network, the "fabric tensor." We validate our model against a large number of computer-generated networks and compare its …
-
Implications of Vorticity and Disorder on Quantum Transport in Topological Semimetals
… and chiral vortical responses, but with richer tensorial structures. We further establish reciprocity relations between vortical and converse vortical effects, clarifying their thermodynamic origin and symmetry constraints. In the second part, we turn to the problem of localization in disordered …
-
Tensor Products and Factorizations of Operator Systems
… through SOH, denoted by γsoh. We prove various tensorial and nuclearity properties of γsoh, which distinguish γsoh from other known tensor products found in [8, 17, 18]. Then we extend such construction to the infinite-dimensional case and conclude that γsoh indeed defines a new tensor product …
-
Multi-dimensional continuous wavelet transforms and generalized fourier transforms in Clifford analysis
… all dimensions at once, as opposed to the usual tensorial approaches. This true multi-dimensional nature allows for a very specific construction of higher dimensional wavelets and the development of the corresponding CWT-theory, based on generalizations to higher dimension of classical orthogonal …
-
Vortices, Painlevé integrability and projective geometry
… 0, 1, 2 or 3 Killing forms. These conditions are tensorial and simpler than the ones in previous literature. By defining suitable affine connections, it is shown that the problem of existence of Killing forms is equivalent to the conditions of the existence of Hamiltonian structures for …
Page 1 of 2