Thesis (Ph. D.)--Queen's University, 1996. / Includes bibliographical references (leaves 224-239).

The thesis argues that non-proliferation sanctions are effective primarily by their coercive effect, that is their power to change the target’s cost/benefit ratios. It does so by contrasting and comparing two key works in sanctions literature, authored by David Baldwin and the Targeted Sanctions Consortium respectively. In the case of the UN sanctions regime against the Democratic People’s Republic of Korea (DPRK), it concludes that the reason why no sufficient coercive effect has been apparent, is due to the lack of costs shouldered by the actors who have implemented the sanctions, as this reflects an apparent lack of commitment. This in turn does not sufficiently increase the possible cost of the DPRK, in continuing its nuclear weapons program. Therefore it is not incentivized to cancel its program.

The reign of King Baldwin I (1100-1118) has thus far received little noteworthy attention by historians as the important pivotal period following the First Crusade conquest of Jerusalem in 1099. The two decades of his rule marked the extension of Latin conquests in the east, most notably by the conquest of the important coastal cities of Arsulf, Acre, Caesarea, Beirut and Sidon. These vital ports for the early Latin Kingdom of Jerusalem provided outlets to the sea for commerce, as well as safe harbors for incoming assistance from the west. Further, Baldwin led in the establishment of strong secular control over ecclesiastical authorities, and provided a model of administration for subsequent monarchs to follow until the loss of the kingdom in 1187. Baldwin's contributions to these developments are presented here in a bibliographical framework to illustrate both his important place in crusader historiography, as well as to gauge the significance of his memory in contemporary literature as a second Joshua archetype. The conquest of Jerusalem and the decades that followed were extraordinarily perilous for the western "colonial" transplants, and thus a Biblical precedent was sought as an explanation to the success of the crusaders. This thesis argues that Fulcher of Chartres, the chaplain and primary contemporary biographer of Baldwin I, saw a parallel with the Biblical figure of Joshua as beneficial to posterity. By the establishment of Baldwin's memory in such a context, Fulcher of Chartres encouraged further western support for the Latin Kingdom, and reveals the important trials that faced Jerusalem's first Latin king.

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La homosexualidad masculina, durante la primera guerra fría, se articuló en la literatura norteamericana en torno a dos ejes: las asunciones heroicas de masculinidad (subordinadoras de masculinidades alternativas) y la frontera como sitio y mito.La masculinidad heroica, otrora hegemónica, y la homosexualidad de los personajes de ficción analizados se presentan unidas en una época donde el discurso médico, jurídico, publicitario y político quiso divorciarlas. Esa unión se produjo en uno de los sitios más masculinistas de la tradición norteamericana: la frontera, fuera real, simbólica o imaginaria. Estos personajes no consiguen alejarse de las posiciones patriarcales que los oprimen como homosexuales. Por tanto, esa masculinidad que tanto ansían abrazar queda lejos de ser garante de pleno desarrollo individual, excepto en la frontera categórica con la realidad. Estas ficciones, escritas en el umbral de la posmodernidad, suponen una apelación a los procesos desintegradores y liberalizadores de la misma. / Homosexuality was articulated around two ideas during the first part of the Cold War: heroic assumptions of masculinity -subordinators of alternative masculinities- and the frontier as place and myth. The heroic masculinity -long ago hegemonic- and the homosexuality of the fictional characters analysed go hand in hand in a time when medical, legal, political and mass-media discourses meant to separate them. We can see that union in one of the most man-dominated places in American tradition: the frontier, be it real, symbolic or imaginary. These characters cannot get away from the patriarchal positions which oppress them as homosexuals. Therefore, that masculinity they long to hold onto does not guarantee their integrity as human beings, except in the categorical frontier with reality itself. For these fictions, written at the threshold of postmodernity, appeal to its disintegrating and liberating processes.

For turbulent flow calculations, some of the well-known turbulence models in the literature are applied on a previously developed Navier-Stokes solver designed to handle laminar flows. A finite volume formulation, which is cell-based for inviscid terms and cell-vertex for viscous terms, is used for numerical discretization of the Navier-Stokes equations in conservative form. This formulation is combined with one-step, explicit time marching Lax-Wendroff numerical scheme that is second order accurate in space. To minimize non-physical oscillations resulting from the numerical scheme, second and fourth order artificial smoothing terms are added. To increase the convergence rate of the solver, local time stepping technique is applied. Before applying turbulence models, Navier-Stokes solver is tested for a case of subsonic, laminar flow over a flat plate. The results are in close agreement with Blasius similarity solutions. To calculate turbulent flows, Boussinesq eddy-viscosity approach is utilized. The eddy viscosity (also called turbulent viscosity), which arises as a consequence of this approach, is calculated using Cebeci-Smith, Michel et. al., Baldwin-Lomax, Chien&rsquo / s k-epsilon and Wilcox&rsquo / s k-omega turbulence models. To evaluate the performances of these turbulence models and to compare them with each other, the solver has been tested for a case of subsonic, laminar - transition fixed - turbulent flow over a flat plate. The results are verified by analytical solutions and empirical correlations.

Cartesian genetic programming (CGP) is a form of genetic programming where candidate programs are represented in the form of directed acyclic graphs. It was shown that CGP can be accelerated using coevolution with a population of fitness predictors which are used to estimate the quality of candidate solutions. The major disadvantage of the coevolutionary approach is the necessity of performing many time-consuming experiments to determine the best size of the fitness predictor for the particular task. This project introduces a new fitness predictor representation with phenotype plasticity, based on the principles of colearning in evolutionary algorithms. Phenotype plasticity allows to derive various phenotypes from the same genotype. This allows to adapt the size of the predictors to the current state of the evolution and difficulty of the solved problem. The proposed algorithm was implemented in the C language and optimized using SSE2 and AVX2 vector instructions. The experimental results show that the resulting image filters are comparable with standard CGP in terms of filtering quality. The average speedup is 8.6 compared to standard CGP. The speed is comparable to standard coevolutionary CGP but it is not necessary to experimentally determine the best size of the fitness predictor while applying coevolution to a new, unknown task.

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