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Browsing by Author "van Wyk, Hans-Werner"

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Generalizations of Various Results in Quantum Computation Theory to Mixed-Dimensional Quantum Systems 

Gay, Randall (2021-04-05)
The majority of the research in quantum computation theory is based on quantum mechanical systems consisting of quantum subsystems that are all of the same dimension. Following and expanding on the research conducted by ...

The Numerical Approximation of Blow-Up Times for Fractional Reaction-Diffusion Equations 

Khachatryan, Mariam (2022-07-28)
We investigate the numerical estimation of blow-up phenomena of the space fractional reaction-diffusion equation \[ \partial_t u +(-\Delta)^{\alpha/2}u=f(u), \quad x \in \Omega, t>0 \] with non-negative initial and Dirichlet ...

Probing and Controlling Electron Dynamics at the Attosecond Timescale 

Vaughan, John (2021-03-12)
A recently established attosecond beamline, for studies controlling and probing electron dynamics, has been stabilized with attosecond precision. The design and performance of the active stabilization system is presented. ...

The role of atomic excited states in laboratory plasmas and a study in fine structure diagnostics for far infra-red astrophysical observations 

Pearce, A. Jonathan (2016-12-09)
This dissertation has a focus on the role of atomic excited states in laboratory and astrophysical plasmas. The emphasis is on systems for which perturbation theory is not expected to produce accurate results. The work ...

Spray Evaporation on Enhanced-Surface Tube Bundles with Low-GWP Refrigerants 

Rothe, Joshua (2023-05-04)  ETD File Embargoed
With the development of new low-GWP HFO refrigerants and increasingly stringent regulation of existing HVAC&R systems, the heat transfer performance of these refrigerants and the effects of various enhancement techniques ...

Understanding Powder Feedstock-Part Performance Relationships in Additive Manufacturing 

Soltani Tehrani, Arash (2022-08-01)
In this dissertation, the relationships between the powder feedstock and the mechanical performance of additively manufactured (AM) parts were investigated. In this regard, different aspects of powder feedstock were ...