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 14 of 14 for “"Particle theory"”.
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The independent particle theory of nuclear scattering
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1952.
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Green's functions methods for justifying quasi-particle models
The individual particle theory of many body systems was studied starting from a microscopic point of view. A technique which is equivalent to a generalized thermodynamics was used to show that, under the appropriate conditions of temperature and external field, the quasi-particle approach is …
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Electric field effects on optical absorption by excitons in semiconductors
… Mo and M3 type edges. In comparison with single-particle theory, the inclusion of the electron-hole interaction increases the oscillator strengths at the Mo edge and at the same time enhances and shifts the Franz-Keldysh type oscillations near the edge. The effect of the electron-hole interaction …
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Study of the effectiveness of animations used in high school chemistry classes
… to the nano-realm of atomic structure and particle theory. Results for lecture-based learning showed that students benefited from the usage of animations coupled with lecture and students had a positive impression of the student-created animations during laboratory. </p>
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Metrics, Muons, Moments, Models, Machine Learning, Measurements, and More: A Manifesto on Collider Physics
The interface between particle theory and particle experiments is essential to improving our understanding of the Standard Model and looking for new physics beyond it. At this interface lies a complicated web of complex and expensive simulations that cannot fully be trusted, experimental and …
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Free energy relationships in sodium halide-alcohol-water mixtures
… contributes to salting-in.</p><p>The scaled particle theory was applied to the twelve systems studied and the parameter, a, was calculated. The agreement with the experimental values was excellent indicating that the theory in its present form can be used for the alcohols as well as nonpolar …
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Conceptual problems in theory appraisal
… change, especially in the processes of theory appraisal. In the thesis I begin with a review of Buchdahl's, Toulmin's, and Laudan's works on conceptual problems. In the review I show that, although all these writers emphasize the importance of conceptual problems as a criterion of theory …
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Next-Generation Earth Radiation Budget Instrument Concepts
… upon Heisenberg's uncertainty principle and the particle theory of light. This method is applicable to either Fraunhofer or Fresnel diffraction situations, but is incapable of predicting the secondary fringes in a diffraction pattern. Also presented is a second diffraction model, based on the …
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An exploration of how a drama-based pedagogy can promote understanding of chemical concepts in 11-15 year old science students
… of UK schools. In each, a curriculum-based particle theory topic was taught in a double-period lesson. Data included video, participant observations, and interviews with three students from each class collected at pre, post and delayed intervals. Findings suggested that the pedagogy …
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The State of First Nations Education: Two Conversations About Education Post-CAP
… of this dissertation explaining Indigenous Theory and Praxis. Subsequent to the expansion of literature on Indigenous theory and Indigenous methodology is the primary document analysis and dialogues which were intended to answer the two research questions of: (1) What changes has the Royal …
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Theories of slow dynamics: from glassy colloidal suspensions to entangled macromolecular liquids
… emergence of glassy dynamics. An earlier single-particle theory is qualitatively extended to study the dynamically correlated motion of two tagged particles in the fluid. A theory for Gaussian density fluctuations is constructed at the level of two tagged particles in a fluid of identical …
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Spectral and dynamical properties of disordered and noisy quantum spin models
… side, proceeding by analogy to the single-particle theory of weak localisation. Whilst we are able to describe diffusion, the analogy breaks down and a description of the onset of localisation in terms of quantum corrections quickly becomes intractable. Some progress is possible by deriving …
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Learning the Electrochemistry of Degradation and Safety in Graphite Porous Electrodes for Lithium-ion Batteries
… performance at multiple scales - from single particle to porous electrode to the battery pack. Insights obtained from experimentation on a given scale to inform modeling, often performs poorly when it comes to prediction at other scales, limiting applicability. This thesis is a small part of a …
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Predictive kinetic modeling of low-temperature hydrocarbon oxidation
… electronic structure calculations, reaction rate theory, automated kinetic modeling and empirical correlations to further our mechanistic understanding of low-temperature oxidation in the gas and liquid phase. First, an extensible framework for automatic estimation of species thermochemistry in …