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 16 of 16 for “"Aspherical"”.
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Geometric methods in the study of Pride groups and relative presentations
… t^-1 b>. Determining when such presentations are aspherical is our main objective. Chapter 1 covers the basic material that is used throughout this thesis. The main topics of interest are free groups; presentations of groups; the word, conjugacy, and isomorphism problems for finitely presented …
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On State Complexes and Special Cube Complexes
… are non-positively curved metric spaces, aspherical topological spaces, and have fundamental groups that are subgroups of right-angled Artin groups. In addition, we find that the property state is preserved when taking finite products, as is true in the case of special. Unlike special, …
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Self-organization in systems of anisotropic particles
… In Chapter 3, we examine systems of hard, aspherical particles. We demonstrate that the thermodynamics of self-organization of a system of these aspherical particle (either a system of identical particles or a polydisperse system of different-shaped particles) is well-predicted by a simple …
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Cubical small-cancellation theory and large-dimensional hyperbolic groups
… that the corresponding coned-off space is aspherical.
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Photographic lens manufacturing and production technologies
… New advances including precision machining of aspherical lenses, fluid-jet polishing and magnetorheological finishing are pushing the boundaries of lens machining and its characteristic surface roughnesses to depths not seen before.
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Some more problems of geodynamics
… internal and external gravitational potential of aspherical and heterogeneous planets. Such calculations are crucial in computing Earth’s long-period deformation. Our approach is based on the transformation of Poisson’s equation into an equivalent equation posed on a spherical computational …
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SELF-ASSEMBLY, DEFORMATION, AND DISASSEMBLY OF SOFT MATERIALS
… hierarchically self-assembled materials made of aspherical building blocks and targeted drug delivery vesicles given the shape dependence of endocytosis. Finally, we present an experimentally validated percolation theory of viral nanoparticle disassembly with an eye towards understanding …
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First principles phase diagram calculations in group IV carbides and Mg2SiO4 liquid from Molecular Dynamics
… conditions is not guaranteed. The development of aspherical flexible potentials that are fit to density functional theory results bridge the gap between ab-initio methods and classical potentials. Comprehensive large-scale molecular dynamics simulations using the aspherical ionic model were …
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Polarized Bow Shock Nebulae Reveal Features of the Winds and Environments of Massive Stars
… of the local medium. Since bow shock nebulae are aspherical structures, light scattering within them produces a net polarization signal even if the region is spatially unresolved. Scattering opacity arising from free electrons and dust leads to a predictable distribution of polarized intensity …
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SALT and TESS monitoring of central stars of planetary nebulae
… (WD), following the WD cooling track. Complex, aspherical morphologies are observed in PNe and binary central stars (CSs) have been the favoured explanation for deviations from spherical symmetry. Finding and characterizing the population of binary CSs is thus important to understand the physics …
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Discovering non-equilibrium mechanisms that regulatestructure and function of biomolecular condensates usingphase-field modeling
… and dynamics such as vacuole formation, aspherical shapes, directed motion, and splitting-fusion behaviors. The second project investigates how transcription of messenger RNA (mRNA) by transcriptional condensates is modulated by other RNAs in the vicinity, such as long non-coding RNAs …
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High resolution linear spectropolarimetry: a study of the potentiality in probing stellar atmospheres and circumstellar environments
… results. We have concluded that the study of aspherical envelopes, the origin of which is not yet completely understood, of PNe and already present in post-AGBs can benefit from high resolution spectropolarimetry and that this technique can shape envelopes still too far away for …
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Statistical mechanical theory of structure and miscibility of polymer nanocomposites: Effects of density, filler shape, and chemical heterogeneity
Motivated by increasing interest in various types of nanoparticles or fillers added to polymers to enhance the material properties, the Polymer Reference Site Interaction Model (PRISM) theory is applied to study the structure and miscibility of polymer nanocomposites (PNCs). Spherical fillers are …