Expressiveness, and more recently, succinctness, are two central concerns of finite model theory and descriptive complexity theory. Succinctness is particularly interesting because it is closely related to the complexity-theoretic trade-off between parallel time and the amount of hardware. We develop new bounds on the expressiveness and succinctness of first-order logic with two variables on finite words, present a related result about the complexity of the satisfiability problem for this logic, and explore a new approach to the generalized star-height problem from the perspective of logical expressiveness. We give a complete characterization of the expressive power of first-order logic with two variables on finite words. Our main tool for this investigation is the classical Ehrenfeucht-Fra¨ıss´e game. Using our new characterization, we prove that the quantifier alternation hierarchy for this logic is strict, settling the main remaining open question about the expressiveness of this logic. A second important question about first-order logic with two variables on finite words is about the complexity of the satisfiability problem for this logic. Previously it was only known that this problem is NP-hard and in NEXP. We prove a polynomialsize small-model property for this logic, leading to an NP algorithm and thus proving that the satisfiability problem for this logic is NP-complete. Finally, we investigate one of the most baffling open problems in formal language theory: the generalized star-height problem. As of today, we do not even know whether there exists a regular language that has generalized star-height larger than 1. This problem can be phrased as an expressiveness question for first-order logic with a restricted transitive closure operator, and thus allows us to use established tools from finite model theory to attack the generalized star-height problem. Besides our contribution to formalize this problem in a purely logical form, we have developed several example languages as candidates for languages of generalized star-height at least 2. While some of them still stand as promising candidates, for others we present new results that prove that they only have generalized star-height 1.

Jediism is a new religious phenomenon where fictitious material is used as religious source material. The phenomenon is called hyper-real religion because the fictitious source material being used in the real world makes it ‘hyper-real’. This study explored Jediism and its usage of Star Wars as a religious source material.  Semi structured interviews with participants from the two largest Jedi communities were conducted: Temple of the Jedi Order and Force Academy. The informats only answered about the Light Aspect of the community, which means that there is still more to be explored in Jediism as it has sides primarily focused on the Dark and the Shadow Aspects of the ‘Force’. Furthermore the phenomenon of Jediism is put in the context within the theoretical approaches of secularization, sacralization and post secularity by Liselotte Frisk and Peter Åkerbäck. By using this theoretical framework the questions regarding who the people are that are looking for this kind of religion, why they chose to be part of it and how the informants from Temple of the Jedi Order and Force Academy speak of Jediism in terms of religious ideas and praxis were explored.     It is argued that Star Wars is the main source material for the studied communities and that it's part of a larger religious movement in Europe and the U.S through the processes of secularization, sacralization and post secularity. Jediism and hyper-real religion, as is shown by this study, should be included in the larger religious landscape that has been shaped by other forms of New Age religion.

No description available.

One of the major purposes of this project was to demonstrate optical components which will be used in fibre optic distribution systems. These include the fibre itself, couplers, connectors, splices, sources and detectors. All components used are state-of-the-art, the star coupler and fusion splice technique being developed by the author during the completion of the project. The star coupler has proved to have one of the lowest insertion losses of any such component to date. Although the telephone system demonstrated has only 3 stations, very similar or identical components would be used in an expanded network. / Thesis / Master of Engineering (MEngr)

<p> An expression is obtained for the energy per particle in neutron star matter. The energy per particle is expressed as a function of, y, the ratio of protons to the total number of nucleons in the system. Minimizing the energy with respect to y gives the optimum proton ratio at a given density. Using an effective nuclear force, the results were extrapolated to a density of p = 6pNM. The proton ratio is rather sensitive to the force used, but all forces used indicated a peak in the proton concentration at p (approximately equal to) 2pNM. The expression for the energy as a function of y was also used to interpolate the energy per particle between the nuclear matter and neutron . gas limits. The form of this interpolation is important in determining the stability of neutron-rich nuclei. </p> / Thesis / Master of Science (MSc)

This thesis is a study of massive star formation: the environments in which they form and the effect that their radiation feedback has on their environments. We present high-performance supercomputer simulations of massive star formation inside molecular cloud clumps and cores. First, we present a novel radiative transfer code that hybridizes two previous approaches to radiative transfer (raytracing and flux-limited diffusion) and implements it in a Cartesian grid-based code with adaptive mesh refinement, representing the first of such implementations. This hybrid radiative transfer code allows for more accurate calculations of the radiation pressure and irradiated gas temperature that are the hallmark of massive star formation and which threaten to limit the mass which stars can ultimately obtain. Next, we apply this hybrid radiative transfer code in simulations of massive protostellar cores. We simulate their gravitational collapse and the formation of a massive protostar surrounded by a Keplerian accretion disk. These disks become gravitationally unstable, increasing the accretion rate onto the star, but do not fragment to form additional stars. We demonstrate that massive stars accrete material predominantly through their circumstellar disks, and via radiation pressure drive large outflow bubbles that appear stable to classic fluid instabilities. Finally, we present simulations of the larger context of star formation: turbulent, magnetised, filamentary cloud clumps. We study the magnetic field geometry and accretion flows. We find that in clouds where the turbulent and magnetic energies are approximately equal, the gravitational energy must dominate the kinetic energy for there to be a coherent magnetic field structure. Star cluster formation takes place inside the primary filament and the photoionisation feedback from a single massive star drives the creation of a bubble of hot, ionised gas that ultimately engulfs the star cluster and destroys the filament. / Thesis / Doctor of Philosophy (PhD)

This thesis uses discourse analysis to examine how female characters are portrayed in the Star Wars franchise. It compares the representation of women in three eras aiming to analyze the changes, in views on gender roles. The focus is on Princess Leia, Padme Amidala and Rey and how they reflect these changes. The study explores whether there has been an evolution in the representation of characters over the 40 years. It will delve into their agency, empowerment and identity looking at whether they challenge or reinforce gender stereotypes and how their interactions with characters impact their development and gender dynamics, within the series.

Within the past three decades, Star Wars has become nothing short of a household name. The millions of dollars gained from the films and various products, as well as the enjoyment and enthusiasm generated among fans, shows that Star Wars' value and significance in the realm of entertainment is substantial. In addition to this value, there are also many religious and mythological elements that are embedded within each of the movies. However, these elements do not carry the same prominence or interest that the plotline has with the audience. In an interview, Lucas stated that it was not his intent to use Star Wars to create a new religion or ideology. Nevertheless, the movie series has raised questions regarding its ability to attain such a devoted following. Consequently, the thesis will look into the dynamic between authorial intent and reader response. In addition, this thesis will investigate the religious themes and mythological elements of the Star Wars series and use this analysis to corroborate the position that Star Wars both resembles traditional religion and functions as religion for the fans. This thesis will analyze the religious elements and myths that are embedded in the general story, as well as those that are unique to the individual movies, by highlighting a family resemblance/functionalist approach to religion that focuses on not only the resemblances to traditional religion but also the religious effects that Star Wars has on its fans and society; namely, moral issues and the sense of meaning and belonging it inculcates among the fan base.

No description available.

One knowledge gap hindering prairie restoration is uncertainty about when a restored prairie communities sufficiently resemble remnant prairie. I surveyed plant communities in remnant prairies, prairies > 5 years post-restoration, and prairies ≤ 5 years post-restoration in Mississippi. Remnants had the greater species richness. Restored prairies had less cover of woody plants and forbs but greatest non-natives. Restored prairies were not similar to remnant prairies (similarity index = 28.9 - 25.9%), primarily because restored prairies had fewer prairie forbs. Thus, restoration may take decades. Transplanting locallyapted prairie forbs into restored prairies may accelerate restoration, but this has not been evaluated adequately. I transplanted a prairie forb (Liatris pycnostachya) into prepared beds, oldields, and restored prairies. Prepared beds had greater growth and seed production, but survival and flowering was high in oldields and restored prairies. Augmenting restored prairies with locallyapted forbs has promise for accelerating prairie restoration.